From 8a7d7b13afa19d8a7140df042cf3045c37d0ce28 Mon Sep 17 00:00:00 2001 From: Vincent Sanders Date: Wed, 30 Jan 2013 12:45:18 +0000 Subject: [PATCH 111/196] bcm2835: add v4l2 camera device - Supports raw YUV capture, preview, JPEG and H264. - Uses videobuf2 for data transfer, using dma_buf. - Uses 3.6.10 timestamping - Camera power based on use - Uses immutable input mode on video encoder Signed-off-by: Daniel Stone Signed-off-by: Luke Diamand --- Documentation/video4linux/bcm2835-v4l2.txt | 60 + drivers/media/platform/Kconfig | 1 + drivers/media/platform/Makefile | 2 + drivers/media/platform/bcm2835/Kconfig | 25 + drivers/media/platform/bcm2835/Makefile | 5 + drivers/media/platform/bcm2835/bcm2835-camera.c | 1478 +++++++++++++++++ drivers/media/platform/bcm2835/bcm2835-camera.h | 113 ++ drivers/media/platform/bcm2835/controls.c | 725 ++++++++ drivers/media/platform/bcm2835/mmal-common.h | 52 + drivers/media/platform/bcm2835/mmal-encodings.h | 93 ++ drivers/media/platform/bcm2835/mmal-msg-common.h | 50 + drivers/media/platform/bcm2835/mmal-msg-format.h | 81 + drivers/media/platform/bcm2835/mmal-msg-port.h | 107 ++ drivers/media/platform/bcm2835/mmal-msg.h | 404 +++++ drivers/media/platform/bcm2835/mmal-parameters.h | 539 ++++++ drivers/media/platform/bcm2835/mmal-vchiq.c | 1916 ++++++++++++++++++++++ drivers/media/platform/bcm2835/mmal-vchiq.h | 178 ++ 17 files changed, 5829 insertions(+) create mode 100644 Documentation/video4linux/bcm2835-v4l2.txt create mode 100644 drivers/media/platform/bcm2835/Kconfig create mode 100644 drivers/media/platform/bcm2835/Makefile create mode 100644 drivers/media/platform/bcm2835/bcm2835-camera.c create mode 100644 drivers/media/platform/bcm2835/bcm2835-camera.h create mode 100644 drivers/media/platform/bcm2835/controls.c create mode 100644 drivers/media/platform/bcm2835/mmal-common.h create mode 100644 drivers/media/platform/bcm2835/mmal-encodings.h create mode 100644 drivers/media/platform/bcm2835/mmal-msg-common.h create mode 100644 drivers/media/platform/bcm2835/mmal-msg-format.h create mode 100644 drivers/media/platform/bcm2835/mmal-msg-port.h create mode 100644 drivers/media/platform/bcm2835/mmal-msg.h create mode 100644 drivers/media/platform/bcm2835/mmal-parameters.h create mode 100644 drivers/media/platform/bcm2835/mmal-vchiq.c create mode 100644 drivers/media/platform/bcm2835/mmal-vchiq.h diff --git a/Documentation/video4linux/bcm2835-v4l2.txt b/Documentation/video4linux/bcm2835-v4l2.txt new file mode 100644 index 0000000..c585a8f --- /dev/null +++ b/Documentation/video4linux/bcm2835-v4l2.txt @@ -0,0 +1,60 @@ + +BCM2835 (aka Raspberry Pi) V4L2 driver +====================================== + +1. Copyright +============ + +Copyright © 2013 Raspberry Pi (Trading) Ltd. + +2. License +========== + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +3. Quick Start +============== + +You need a version 1.0 or later of v4l2-ctl, available from: + git://git.linuxtv.org/v4l-utils.git + +$ sudo modprobe bcm2835-v4l2 + +Turn on the overlay: + +$ v4l2-ctl --overlay=1 + +Turn off the overlay: + +$ v4l2-ctl --overlay=0 + +Set the capture format for video: + +$ v4l2-ctl --set-fmt-video=width=1920,height=1088,pixelformat=4 + +(Note: 1088 not 1080). + +Capture: + +$ v4l2-ctl --stream-mmap=3 --stream-count=100 --stream-to=somefile.h264 + +Stills capture: + +$ v4l2-ctl --set-fmt-video=width=2592,height=1944,pixelformat=3 +$ v4l2-ctl --stream-mmap=3 --stream-count=1 --stream-to=somefile.jpg + +List of available formats: + +$ v4l2-ctl --list-formats diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 0494d27..8e6d48b 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -124,6 +124,7 @@ config VIDEO_S3C_CAMIF source "drivers/media/platform/soc_camera/Kconfig" source "drivers/media/platform/exynos4-is/Kconfig" source "drivers/media/platform/s5p-tv/Kconfig" +source "drivers/media/platform/bcm2835/Kconfig" endif # V4L_PLATFORM_DRIVERS diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile index eee28dd..29be30c 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -50,4 +50,6 @@ obj-y += davinci/ obj-$(CONFIG_ARCH_OMAP) += omap/ +obj-$(CONFIG_VIDEO_BCM2835) += bcm2835/ + ccflags-y += -I$(srctree)/drivers/media/i2c diff --git a/drivers/media/platform/bcm2835/Kconfig b/drivers/media/platform/bcm2835/Kconfig new file mode 100644 index 0000000..a8fd172 --- /dev/null +++ b/drivers/media/platform/bcm2835/Kconfig @@ -0,0 +1,25 @@ +# Broadcom VideoCore IV v4l2 camera support + +config VIDEO_BCM2835 + bool "Broadcom BCM2835 camera interface driver" + depends on VIDEO_V4L2 && ARCH_BCM2708 + ---help--- + Say Y here to enable camera host interface devices for + Broadcom BCM2835 SoC. This operates over the VCHIQ interface + to a service running on VideoCore. + + +if VIDEO_BCM2835 + +config VIDEO_BCM2835_MMAL + tristate "Broadcom BM2835 MMAL camera interface driver" + depends on BCM2708_VCHIQ + select VIDEOBUF2_VMALLOC + ---help--- + This is a V4L2 driver for the Broadcom BCM2835 MMAL camera host interface + + To compile this driver as a module, choose M here: the + module will be called bcm2835-v4l2.o + + +endif # VIDEO_BM2835 diff --git a/drivers/media/platform/bcm2835/Makefile b/drivers/media/platform/bcm2835/Makefile new file mode 100644 index 0000000..f17c79c --- /dev/null +++ b/drivers/media/platform/bcm2835/Makefile @@ -0,0 +1,5 @@ +bcm2835-v4l2-objs := bcm2835-camera.o controls.o mmal-vchiq.o + +obj-$(CONFIG_VIDEO_BCM2835_MMAL) += bcm2835-v4l2.o + +ccflags-$(CONFIG_VIDEO_BCM2835) += -Idrivers/misc/vc04_services -Idrivers/misc/vc04_services/interface/vcos/linuxkernel -D__VCCOREVER__=0x04000000 diff --git a/drivers/media/platform/bcm2835/bcm2835-camera.c b/drivers/media/platform/bcm2835/bcm2835-camera.c new file mode 100644 index 0000000..47fe45d --- /dev/null +++ b/drivers/media/platform/bcm2835/bcm2835-camera.c @@ -0,0 +1,1478 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "mmal-common.h" +#include "mmal-encodings.h" +#include "mmal-vchiq.h" +#include "mmal-msg.h" +#include "mmal-parameters.h" +#include "bcm2835-camera.h" + +#define BM2835_MMAL_VERSION "0.0.2" +#define BM2835_MMAL_MODULE_NAME "bcm2835-v4l2" + +#define MAX_WIDTH 2592 +#define MAX_HEIGHT 1944 +#define MIN_BUFFER_SIZE (80*1024) + +#define MAX_VIDEO_MODE_WIDTH 1280 +#define MAX_VIDEO_MODE_HEIGHT 720 + +MODULE_DESCRIPTION("Broadcom 2835 MMAL video capture"); +MODULE_AUTHOR("Vincent Sanders"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(BM2835_MMAL_VERSION); + +int bcm2835_v4l2_debug; +module_param_named(debug, bcm2835_v4l2_debug, int, 0644); +MODULE_PARM_DESC(bcm2835_v4l2_debug, "Debug level 0-2"); + +static struct bm2835_mmal_dev *gdev; /* global device data */ + +/* video formats */ +static struct mmal_fmt formats[] = { + { + .name = "4:2:0, packed YUV", + .fourcc = V4L2_PIX_FMT_YUV420, + .mmal = MMAL_ENCODING_I420, + .depth = 12, + .mmal_component = MMAL_COMPONENT_CAMERA, + }, + { + .name = "4:2:2, packed, YUYV", + .fourcc = V4L2_PIX_FMT_YUYV, + .mmal = MMAL_ENCODING_YUYV, + .depth = 16, + .mmal_component = MMAL_COMPONENT_CAMERA, + }, + { + .name = "RGB24 (BE)", + .fourcc = V4L2_PIX_FMT_BGR24, + .mmal = MMAL_ENCODING_BGR24, + .depth = 24, + .mmal_component = MMAL_COMPONENT_CAMERA, + }, + { + .name = "JPEG", + .fourcc = V4L2_PIX_FMT_JPEG, + .mmal = MMAL_ENCODING_JPEG, + .depth = 8, + .mmal_component = MMAL_COMPONENT_IMAGE_ENCODE, + }, + { + .name = "H264", + .fourcc = V4L2_PIX_FMT_H264, + .mmal = MMAL_ENCODING_H264, + .depth = 8, + .mmal_component = MMAL_COMPONENT_VIDEO_ENCODE, + } +}; + +static struct mmal_fmt *get_format(struct v4l2_format *f) +{ + struct mmal_fmt *fmt; + unsigned int k; + + for (k = 0; k < ARRAY_SIZE(formats); k++) { + fmt = &formats[k]; + if (fmt->fourcc == f->fmt.pix.pixelformat) + break; + } + + if (k == ARRAY_SIZE(formats)) + return NULL; + + return &formats[k]; +} + +/* ------------------------------------------------------------------ + Videobuf queue operations + ------------------------------------------------------------------*/ + +static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, + unsigned int *nbuffers, unsigned int *nplanes, + unsigned int sizes[], void *alloc_ctxs[]) +{ + struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq); + unsigned long size; + + /* refuse queue setup if port is not configured */ + if (dev->capture.port == NULL) { + v4l2_err(&dev->v4l2_dev, + "%s: capture port not configured\n", __func__); + return -EINVAL; + } + + size = dev->capture.port->current_buffer.size; + if (size == 0) { + v4l2_err(&dev->v4l2_dev, + "%s: capture port buffer size is zero\n", __func__); + return -EINVAL; + } + + if (*nbuffers < (dev->capture.port->current_buffer.num + 2)) + *nbuffers = (dev->capture.port->current_buffer.num + 2); + + *nplanes = 1; + + sizes[0] = size; + + /* + * videobuf2-vmalloc allocator is context-less so no need to set + * alloc_ctxs array. + */ + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n", + __func__, dev); + + return 0; +} + +static int buffer_prepare(struct vb2_buffer *vb) +{ + struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + unsigned long size; + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n", + __func__, dev); + + BUG_ON(dev->capture.port == NULL); + BUG_ON(dev->capture.fmt == NULL); + + size = dev->capture.stride * dev->capture.height; + if (vb2_plane_size(vb, 0) < size) { + v4l2_err(&dev->v4l2_dev, + "%s data will not fit into plane (%lu < %lu)\n", + __func__, vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + return 0; +} + +static inline bool is_capturing(struct bm2835_mmal_dev *dev) +{ + return dev->capture.camera_port == + &dev-> + component[MMAL_COMPONENT_CAMERA]->output[MMAL_CAMERA_PORT_CAPTURE]; +} + +static void buffer_cb(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + int status, + struct mmal_buffer *buf, + unsigned long length, u32 mmal_flags, s64 dts, s64 pts) +{ + struct bm2835_mmal_dev *dev = port->cb_ctx; + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "%s: status:%d, buf:%p, length:%lu, flags %u, pts %lld\n", + __func__, status, buf, length, mmal_flags, pts); + + if (status != 0) { + /* error in transfer */ + if (buf != NULL) { + /* there was a buffer with the error so return it */ + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); + } + return; + } else if (length == 0) { + /* stream ended */ + if (buf != NULL) { + /* this should only ever happen if the port is + * disabled and there are buffers still queued + */ + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); + pr_debug("Empty buffer"); + } else if (dev->capture.frame_count) { + /* grab another frame */ + if (is_capturing(dev)) { + pr_debug("Grab another frame"); + vchiq_mmal_port_parameter_set( + instance, + dev->capture. + camera_port, + MMAL_PARAMETER_CAPTURE, + &dev->capture. + frame_count, + sizeof(dev->capture.frame_count)); + } + } else { + /* signal frame completion */ + complete(&dev->capture.frame_cmplt); + } + } else { + if (dev->capture.frame_count) { + if (dev->capture.vc_start_timestamp != -1) { + s64 runtime_us = pts - + dev->capture.vc_start_timestamp; + u32 div = 0; + u32 rem = 0; + + div = + div_u64_rem(runtime_us, USEC_PER_SEC, &rem); + buf->vb.v4l2_buf.timestamp.tv_sec = + dev->capture.kernel_start_ts.tv_sec - 1 + + div; + buf->vb.v4l2_buf.timestamp.tv_usec = + dev->capture.kernel_start_ts.tv_usec + rem; + + if (buf->vb.v4l2_buf.timestamp.tv_usec >= + USEC_PER_SEC) { + buf->vb.v4l2_buf.timestamp.tv_sec++; + buf->vb.v4l2_buf.timestamp.tv_usec -= + USEC_PER_SEC; + } + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "Convert start time %d.%06d and %llu" + "with offset %llu to %d.%06d\n", + (int)dev->capture.kernel_start_ts. + tv_sec, + (int)dev->capture.kernel_start_ts. + tv_usec, + dev->capture.vc_start_timestamp, pts, + (int)buf->vb.v4l2_buf.timestamp.tv_sec, + (int)buf->vb.v4l2_buf.timestamp. + tv_usec); + } else { + v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp); + } + + vb2_set_plane_payload(&buf->vb, 0, length); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE); + + if (mmal_flags & MMAL_BUFFER_HEADER_FLAG_EOS && + is_capturing(dev)) { + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "Grab another frame as buffer has EOS"); + vchiq_mmal_port_parameter_set( + instance, + dev->capture. + camera_port, + MMAL_PARAMETER_CAPTURE, + &dev->capture. + frame_count, + sizeof(dev->capture.frame_count)); + } + } else { + /* signal frame completion */ + complete(&dev->capture.frame_cmplt); + } + } +} + +static int enable_camera(struct bm2835_mmal_dev *dev) +{ + int ret; + if (!dev->camera_use_count) { + ret = vchiq_mmal_component_enable( + dev->instance, + dev->component[MMAL_COMPONENT_CAMERA]); + if (ret < 0) { + v4l2_err(&dev->v4l2_dev, + "Failed enabling camera, ret %d\n", ret); + return -EINVAL; + } + } + dev->camera_use_count++; + v4l2_dbg(1, bcm2835_v4l2_debug, + &dev->v4l2_dev, "enabled camera (refcount %d)\n", + dev->camera_use_count); + return 0; +} + +static int disable_camera(struct bm2835_mmal_dev *dev) +{ + int ret; + if (!dev->camera_use_count) { + v4l2_err(&dev->v4l2_dev, + "Disabled the camera when already disabled\n"); + return -EINVAL; + } + dev->camera_use_count--; + if (!dev->camera_use_count) { + unsigned int i = 0xFFFFFFFF; + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "Disabling camera\n"); + ret = + vchiq_mmal_component_disable( + dev->instance, + dev->component[MMAL_COMPONENT_CAMERA]); + if (ret < 0) { + v4l2_err(&dev->v4l2_dev, + "Failed disabling camera, ret %d\n", ret); + return -EINVAL; + } + vchiq_mmal_port_parameter_set( + dev->instance, + &dev->component[MMAL_COMPONENT_CAMERA]->control, + MMAL_PARAMETER_CAMERA_NUM, &i, + sizeof(i)); + } + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "Camera refcount now %d\n", dev->camera_use_count); + return 0; +} + +static void buffer_queue(struct vb2_buffer *vb) +{ + struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + struct mmal_buffer *buf = container_of(vb, struct mmal_buffer, vb); + int ret; + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "%s: dev:%p buf:%p\n", __func__, dev, buf); + + buf->buffer = vb2_plane_vaddr(&buf->vb, 0); + buf->buffer_size = vb2_plane_size(&buf->vb, 0); + + ret = vchiq_mmal_submit_buffer(dev->instance, dev->capture.port, buf); + if (ret < 0) + v4l2_err(&dev->v4l2_dev, "%s: error submitting buffer\n", + __func__); +} + +static int start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq); + int ret; + int parameter_size; + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n", + __func__, dev); + + /* ensure a format has actually been set */ + if (dev->capture.port == NULL) + return -EINVAL; + + if (enable_camera(dev) < 0) { + v4l2_err(&dev->v4l2_dev, "Failed to enable camera\n"); + return -EINVAL; + } + + /*init_completion(&dev->capture.frame_cmplt); */ + + /* enable frame capture */ + dev->capture.frame_count = 1; + + /* if the preview is not already running, wait for a few frames for AGC + * to settle down. + */ + if (!dev->component[MMAL_COMPONENT_PREVIEW]->enabled) + msleep(300); + + /* enable the connection from camera to encoder (if applicable) */ + if (dev->capture.camera_port != dev->capture.port + && dev->capture.camera_port) { + ret = vchiq_mmal_port_enable(dev->instance, + dev->capture.camera_port, NULL); + if (ret) { + v4l2_err(&dev->v4l2_dev, + "Failed to enable encode tunnel - error %d\n", + ret); + return -1; + } + } + + /* Get VC timestamp at this point in time */ + parameter_size = sizeof(dev->capture.vc_start_timestamp); + if (vchiq_mmal_port_parameter_get(dev->instance, + dev->capture.camera_port, + MMAL_PARAMETER_SYSTEM_TIME, + &dev->capture.vc_start_timestamp, + ¶meter_size)) { + v4l2_err(&dev->v4l2_dev, + "Failed to get VC start time - update your VC f/w\n"); + + /* Flag to indicate just to rely on kernel timestamps */ + dev->capture.vc_start_timestamp = -1; + } else + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "Start time %lld size %d\n", + dev->capture.vc_start_timestamp, parameter_size); + + v4l2_get_timestamp(&dev->capture.kernel_start_ts); + + /* enable the camera port */ + dev->capture.port->cb_ctx = dev; + ret = + vchiq_mmal_port_enable(dev->instance, dev->capture.port, buffer_cb); + if (ret) { + v4l2_err(&dev->v4l2_dev, + "Failed to enable capture port - error %d\n", ret); + return -1; + } + + /* capture the first frame */ + vchiq_mmal_port_parameter_set(dev->instance, + dev->capture.camera_port, + MMAL_PARAMETER_CAPTURE, + &dev->capture.frame_count, + sizeof(dev->capture.frame_count)); + return 0; +} + +/* abort streaming and wait for last buffer */ +static int stop_streaming(struct vb2_queue *vq) +{ + int ret; + struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq); + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n", + __func__, dev); + + init_completion(&dev->capture.frame_cmplt); + dev->capture.frame_count = 0; + + /* ensure a format has actually been set */ + if (dev->capture.port == NULL) + return -EINVAL; + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "stopping capturing\n"); + + /* stop capturing frames */ + vchiq_mmal_port_parameter_set(dev->instance, + dev->capture.camera_port, + MMAL_PARAMETER_CAPTURE, + &dev->capture.frame_count, + sizeof(dev->capture.frame_count)); + + /* wait for last frame to complete */ + ret = wait_for_completion_timeout(&dev->capture.frame_cmplt, HZ); + if (ret <= 0) + v4l2_err(&dev->v4l2_dev, + "error %d waiting for frame completion\n", ret); + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "disabling connection\n"); + + /* disable the connection from camera to encoder */ + ret = vchiq_mmal_port_disable(dev->instance, dev->capture.camera_port); + if (!ret && dev->capture.camera_port != dev->capture.port) { + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "disabling port\n"); + ret = vchiq_mmal_port_disable(dev->instance, dev->capture.port); + } else if (dev->capture.camera_port != dev->capture.port) { + v4l2_err(&dev->v4l2_dev, "port_disable failed, error %d\n", + ret); + } + + if (disable_camera(dev) < 0) { + v4l2_err(&dev->v4l2_dev, "Failed to disable camera"); + return -EINVAL; + } + + return ret; +} + +static void bm2835_mmal_lock(struct vb2_queue *vq) +{ + struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq); + mutex_lock(&dev->mutex); +} + +static void bm2835_mmal_unlock(struct vb2_queue *vq) +{ + struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq); + mutex_unlock(&dev->mutex); +} + +static struct vb2_ops bm2835_mmal_video_qops = { + .queue_setup = queue_setup, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .start_streaming = start_streaming, + .stop_streaming = stop_streaming, + .wait_prepare = bm2835_mmal_unlock, + .wait_finish = bm2835_mmal_lock, +}; + +/* ------------------------------------------------------------------ + IOCTL operations + ------------------------------------------------------------------*/ + +/* overlay ioctl */ +static int vidioc_enum_fmt_vid_overlay(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct mmal_fmt *fmt; + + if (f->index >= ARRAY_SIZE(formats)) + return -EINVAL; + + fmt = &formats[f->index]; + + strlcpy(f->description, fmt->name, sizeof(f->description)); + f->pixelformat = fmt->fourcc; + + return 0; +} + +static int vidioc_g_fmt_vid_overlay(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct bm2835_mmal_dev *dev = video_drvdata(file); + + f->fmt.win = dev->overlay; + + return 0; +} + +static int vidioc_try_fmt_vid_overlay(struct file *file, void *priv, + struct v4l2_format *f) +{ + /* Only support one format so get the current one. */ + vidioc_g_fmt_vid_overlay(file, priv, f); + + /* todo: allow the size and/or offset to be changed. */ + return 0; +} + +static int vidioc_s_fmt_vid_overlay(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct bm2835_mmal_dev *dev = video_drvdata(file); + + vidioc_try_fmt_vid_overlay(file, priv, f); + + dev->overlay = f->fmt.win; + + /* todo: program the preview port parameters */ + return 0; +} + +static int vidioc_overlay(struct file *file, void *f, unsigned int on) +{ + int ret; + struct bm2835_mmal_dev *dev = video_drvdata(file); + struct vchiq_mmal_port *src; + struct vchiq_mmal_port *dst; + struct mmal_parameter_displayregion prev_config = { + .set = MMAL_DISPLAY_SET_LAYER | MMAL_DISPLAY_SET_ALPHA | + MMAL_DISPLAY_SET_DEST_RECT | MMAL_DISPLAY_SET_FULLSCREEN, + .layer = PREVIEW_LAYER, + .alpha = 255, + .fullscreen = 0, + .dest_rect = { + .x = dev->overlay.w.left, + .y = dev->overlay.w.top, + .width = dev->overlay.w.width, + .height = dev->overlay.w.height, + }, + }; + + if ((on && dev->component[MMAL_COMPONENT_PREVIEW]->enabled) || + (!on && !dev->component[MMAL_COMPONENT_PREVIEW]->enabled)) + return 0; /* already in requested state */ + + src = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_PREVIEW]; + + if (!on) { + /* disconnect preview ports and disable component */ + ret = vchiq_mmal_port_disable(dev->instance, src); + if (!ret) + ret = + vchiq_mmal_port_connect_tunnel(dev->instance, src, + NULL); + if (ret >= 0) + ret = vchiq_mmal_component_disable( + dev->instance, + dev->component[MMAL_COMPONENT_PREVIEW]); + + disable_camera(dev); + return ret; + } + + /* set preview port format and connect it to output */ + dst = &dev->component[MMAL_COMPONENT_PREVIEW]->input[0]; + + ret = vchiq_mmal_port_set_format(dev->instance, src); + if (ret < 0) + goto error; + + ret = vchiq_mmal_port_parameter_set(dev->instance, dst, + MMAL_PARAMETER_DISPLAYREGION, + &prev_config, sizeof(prev_config)); + if (ret < 0) + goto error; + + if (enable_camera(dev) < 0) + goto error; + + ret = vchiq_mmal_component_enable( + dev->instance, + dev->component[MMAL_COMPONENT_PREVIEW]); + if (ret < 0) + goto error; + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "connecting %p to %p\n", + src, dst); + ret = vchiq_mmal_port_connect_tunnel(dev->instance, src, dst); + if (!ret) + ret = vchiq_mmal_port_enable(dev->instance, src, NULL); +error: + return ret; +} + +static int vidioc_g_fbuf(struct file *file, void *fh, + struct v4l2_framebuffer *a) +{ + /* The video overlay must stay within the framebuffer and can't be + positioned independently. */ + a->flags = V4L2_FBUF_FLAG_OVERLAY; + + /* todo: v4l2_framebuffer still needs more info filling in + * in order to pass the v4l2-compliance test. */ + + return 0; +} + +/* input ioctls */ +static int vidioc_enum_input(struct file *file, void *priv, + struct v4l2_input *inp) +{ + /* only a single camera input */ + if (inp->index != 0) + return -EINVAL; + + inp->type = V4L2_INPUT_TYPE_CAMERA; + sprintf(inp->name, "Camera %u", inp->index); + return 0; +} + +static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_s_input(struct file *file, void *priv, unsigned int i) +{ + if (i != 0) + return -EINVAL; + + return 0; +} + +/* capture ioctls */ +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct bm2835_mmal_dev *dev = video_drvdata(file); + u32 major; + u32 minor; + + vchiq_mmal_version(dev->instance, &major, &minor); + + strcpy(cap->driver, "bm2835 mmal"); + snprintf(cap->card, sizeof(cap->card), "mmal service %d.%d", + major, minor); + + snprintf(cap->bus_info, sizeof(cap->bus_info), + "platform:%s", dev->v4l2_dev.name); + cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OVERLAY | + V4L2_CAP_STREAMING | V4L2_CAP_READWRITE; + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; + + return 0; +} + +static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct mmal_fmt *fmt; + + if (f->index >= ARRAY_SIZE(formats)) + return -EINVAL; + + fmt = &formats[f->index]; + + strlcpy(f->description, fmt->name, sizeof(f->description)); + f->pixelformat = fmt->fourcc; + return 0; +} + +static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct bm2835_mmal_dev *dev = video_drvdata(file); + + f->fmt.pix.width = dev->capture.width; + f->fmt.pix.height = dev->capture.height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.pixelformat = dev->capture.fmt->fourcc; + f->fmt.pix.bytesperline = + (f->fmt.pix.width * dev->capture.fmt->depth) >> 3; + f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; + if (dev->capture.fmt->fourcc == V4L2_PIX_FMT_JPEG + && f->fmt.pix.sizeimage < (100 << 10)) { + /* Need a minimum size for JPEG to account for EXIF. */ + f->fmt.pix.sizeimage = (100 << 10); + } + + if (dev->capture.fmt->fourcc == V4L2_PIX_FMT_YUYV || + dev->capture.fmt->fourcc == V4L2_PIX_FMT_UYVY) + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + else + f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; + f->fmt.pix.priv = 0; + + v4l2_dump_pix_format(1, bcm2835_v4l2_debug, &dev->v4l2_dev, &f->fmt.pix, + __func__); + return 0; +} + +static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct bm2835_mmal_dev *dev = video_drvdata(file); + struct mmal_fmt *mfmt; + + mfmt = get_format(f); + if (!mfmt) { + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "Fourcc format (0x%08x) unknown.\n", + f->fmt.pix.pixelformat); + f->fmt.pix.pixelformat = formats[0].fourcc; + mfmt = get_format(f); + } + + f->fmt.pix.field = V4L2_FIELD_NONE; + /* image must be a multiple of 32 pixels wide and 16 lines high */ + v4l_bound_align_image(&f->fmt.pix.width, 48, MAX_WIDTH, 5, + &f->fmt.pix.height, 32, MAX_HEIGHT, 4, 0); + f->fmt.pix.bytesperline = (f->fmt.pix.width * mfmt->depth) >> 3; + f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; + if (f->fmt.pix.sizeimage < MIN_BUFFER_SIZE) + f->fmt.pix.sizeimage = MIN_BUFFER_SIZE; + + if (mfmt->fourcc == V4L2_PIX_FMT_YUYV || + mfmt->fourcc == V4L2_PIX_FMT_UYVY) + f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + else + f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; + f->fmt.pix.priv = 0; + + v4l2_dump_pix_format(1, bcm2835_v4l2_debug, &dev->v4l2_dev, &f->fmt.pix, + __func__); + return 0; +} + +static int mmal_setup_components(struct bm2835_mmal_dev *dev, + struct v4l2_format *f) +{ + int ret; + struct vchiq_mmal_port *port = NULL, *camera_port = NULL; + struct vchiq_mmal_component *encode_component = NULL; + struct mmal_fmt *mfmt = get_format(f); + + BUG_ON(!mfmt); + + if (dev->capture.encode_component) { + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "vid_cap - disconnect previous tunnel\n"); + + /* Disconnect any previous connection */ + vchiq_mmal_port_connect_tunnel(dev->instance, + dev->capture.camera_port, NULL); + dev->capture.camera_port = NULL; + ret = vchiq_mmal_component_disable(dev->instance, + dev->capture. + encode_component); + if (ret) + v4l2_err(&dev->v4l2_dev, + "Failed to disable encode component %d\n", + ret); + + dev->capture.encode_component = NULL; + } + /* format dependant port setup */ + switch (mfmt->mmal_component) { + case MMAL_COMPONENT_CAMERA: + /* Make a further decision on port based on resolution */ + if (f->fmt.pix.width <= MAX_VIDEO_MODE_WIDTH + && f->fmt.pix.height <= MAX_VIDEO_MODE_HEIGHT) + camera_port = port = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_VIDEO]; + else + camera_port = port = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_CAPTURE]; + break; + case MMAL_COMPONENT_IMAGE_ENCODE: + encode_component = dev->component[MMAL_COMPONENT_IMAGE_ENCODE]; + port = &dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->output[0]; + camera_port = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_CAPTURE]; + break; + case MMAL_COMPONENT_VIDEO_ENCODE: + encode_component = dev->component[MMAL_COMPONENT_VIDEO_ENCODE]; + port = &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0]; + camera_port = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_VIDEO]; + break; + default: + break; + } + + if (!port) + return -EINVAL; + + if (encode_component) + camera_port->format.encoding = MMAL_ENCODING_OPAQUE; + else + camera_port->format.encoding = mfmt->mmal; + + camera_port->format.encoding_variant = 0; + camera_port->es.video.width = f->fmt.pix.width; + camera_port->es.video.height = f->fmt.pix.height; + camera_port->es.video.crop.x = 0; + camera_port->es.video.crop.y = 0; + camera_port->es.video.crop.width = f->fmt.pix.width; + camera_port->es.video.crop.height = f->fmt.pix.height; + camera_port->es.video.frame_rate.num = 30; + camera_port->es.video.frame_rate.den = 1; + + ret = vchiq_mmal_port_set_format(dev->instance, camera_port); + + if (!ret + && camera_port == + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_VIDEO]) { + bool overlay_enabled = + !!dev->component[MMAL_COMPONENT_PREVIEW]->enabled; + struct vchiq_mmal_port *preview_port = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_PREVIEW]; + /* Preview and encode ports need to match on resolution */ + if (overlay_enabled) { + /* Need to disable the overlay before we can update + * the resolution + */ + ret = + vchiq_mmal_port_disable(dev->instance, + preview_port); + if (!ret) + ret = + vchiq_mmal_port_connect_tunnel( + dev->instance, + preview_port, + NULL); + } + preview_port->es.video.width = f->fmt.pix.width; + preview_port->es.video.height = f->fmt.pix.height; + preview_port->es.video.crop.x = 0; + preview_port->es.video.crop.y = 0; + preview_port->es.video.crop.width = f->fmt.pix.width; + preview_port->es.video.crop.height = f->fmt.pix.height; + preview_port->es.video.frame_rate.num = 30; + preview_port->es.video.frame_rate.den = 1; + ret = vchiq_mmal_port_set_format(dev->instance, preview_port); + if (overlay_enabled) { + ret = vchiq_mmal_port_connect_tunnel( + dev->instance, + preview_port, + &dev->component[MMAL_COMPONENT_PREVIEW]->input[0]); + if (!ret) + ret = vchiq_mmal_port_enable(dev->instance, + preview_port, + NULL); + } + } + + if (ret) { + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "%s failed to set format\n", __func__); + /* ensure capture is not going to be tried */ + dev->capture.port = NULL; + } else { + if (encode_component) { + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "vid_cap - set up encode comp\n"); + + /* configure buffering */ + camera_port->current_buffer.size = + camera_port->recommended_buffer.size; + camera_port->current_buffer.num = + camera_port->recommended_buffer.num; + + port->format.encoding = mfmt->mmal; + port->format.encoding_variant = 0; + /* Set any encoding specific parameters */ + switch (mfmt->mmal_component) { + case MMAL_COMPONENT_VIDEO_ENCODE: + port->format.bitrate = + dev->capture.encode_bitrate; + break; + case MMAL_COMPONENT_IMAGE_ENCODE: + /* Could set EXIF parameters here */ + break; + default: + break; + } + ret = vchiq_mmal_port_set_format(dev->instance, port); + + if (ret) { + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "%s failed to set format\n", __func__); + } else { + ret = vchiq_mmal_component_enable( + dev->instance, + encode_component); + if (ret) { + v4l2_dbg(1, bcm2835_v4l2_debug, + &dev->v4l2_dev, + "%s Failed to enable encode components\n", + __func__); + } else { + /* configure buffering */ + port->current_buffer.num = 1; + port->current_buffer.size = + f->fmt.pix.sizeimage; + if (port->format.encoding == + MMAL_ENCODING_JPEG) { + v4l2_dbg(1, bcm2835_v4l2_debug, + &dev->v4l2_dev, + "JPEG - fiddle buffer size\n"); + port->current_buffer.size = + (f->fmt.pix.sizeimage < + (100 << 10)) + ? (100 << 10) : f->fmt.pix. + sizeimage; + } + v4l2_dbg(1, bcm2835_v4l2_debug, + &dev->v4l2_dev, + "vid_cap - current_buffer.size being set to %d\n", + f->fmt.pix.sizeimage); + port->current_buffer.alignment = 0; + ret = + vchiq_mmal_port_connect_tunnel( + dev->instance, + camera_port, + &encode_component->input[0]); + if (ret) { + v4l2_dbg(1, bcm2835_v4l2_debug, + &dev->v4l2_dev, + "%s failed to create connection\n", + __func__); + /* ensure capture is not going to be tried */ + dev->capture.port = NULL; + } + } + } + } else { + /* configure buffering */ + camera_port->current_buffer.num = 1; + camera_port->current_buffer.size = f->fmt.pix.sizeimage; + camera_port->current_buffer.alignment = 0; + } + + if (!ret) { + dev->capture.fmt = mfmt; + dev->capture.stride = f->fmt.pix.bytesperline; + dev->capture.width = port->es.video.crop.width; + dev->capture.height = port->es.video.crop.height; + + /* select port for capture */ + dev->capture.port = port; + dev->capture.camera_port = camera_port; + dev->capture.encode_component = encode_component; + } + } + + /* todo: Need to convert the vchiq/mmal error into a v4l2 error. */ + return ret; +} + +static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + int ret; + struct bm2835_mmal_dev *dev = video_drvdata(file); + struct mmal_fmt *mfmt; + + /* try the format to set valid parameters */ + ret = vidioc_try_fmt_vid_cap(file, priv, f); + if (ret) { + v4l2_err(&dev->v4l2_dev, + "vid_cap - vidioc_try_fmt_vid_cap failed\n"); + return ret; + } + + /* if a capture is running refuse to set format */ + if (vb2_is_busy(&dev->capture.vb_vidq)) { + v4l2_info(&dev->v4l2_dev, "%s device busy\n", __func__); + return -EBUSY; + } + + /* If the format is unsupported v4l2 says we should switch to + * a supported one and not return an error. */ + mfmt = get_format(f); + if (!mfmt) { + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "Fourcc format (0x%08x) unknown.\n", + f->fmt.pix.pixelformat); + f->fmt.pix.pixelformat = formats[0].fourcc; + mfmt = get_format(f); + } + + ret = mmal_setup_components(dev, f); + if (ret != 0) + v4l2_err(&dev->v4l2_dev, + "%s: failed to setup mmal components: %d\n", + __func__, ret); + + return ret; +} + +static const struct v4l2_ioctl_ops camera0_ioctl_ops = { + /* overlay */ + .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay, + .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay, + .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay, + .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay, + .vidioc_overlay = vidioc_overlay, + .vidioc_g_fbuf = vidioc_g_fbuf, + + /* inputs */ + .vidioc_enum_input = vidioc_enum_input, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + + /* capture */ + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, + + /* buffer management */ + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/* ------------------------------------------------------------------ + Driver init/finalise + ------------------------------------------------------------------*/ + +static const struct v4l2_file_operations camera0_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .read = vb2_fop_read, + .poll = vb2_fop_poll, + .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */ + .mmap = vb2_fop_mmap, +}; + +static struct video_device vdev_template = { + .name = "camera0", + .fops = &camera0_fops, + .ioctl_ops = &camera0_ioctl_ops, + .release = video_device_release_empty, +}; + +static int set_camera_parameters(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *camera) +{ + int ret; + struct mmal_parameter_camera_config cam_config = { + .max_stills_w = MAX_WIDTH, + .max_stills_h = MAX_HEIGHT, + .stills_yuv422 = 1, + .one_shot_stills = 1, + .max_preview_video_w = 1920, + .max_preview_video_h = 1088, + .num_preview_video_frames = 3, + .stills_capture_circular_buffer_height = 0, + .fast_preview_resume = 0, + .use_stc_timestamp = MMAL_PARAM_TIMESTAMP_MODE_RAW_STC + }; + + ret = vchiq_mmal_port_parameter_set(instance, &camera->control, + MMAL_PARAMETER_CAMERA_CONFIG, + &cam_config, sizeof(cam_config)); + return ret; +} + +/* MMAL instance and component init */ +static int __init mmal_init(struct bm2835_mmal_dev *dev) +{ + int ret; + struct mmal_es_format *format; + + ret = vchiq_mmal_init(&dev->instance); + if (ret < 0) + return ret; + + /* get the camera component ready */ + ret = vchiq_mmal_component_init(dev->instance, "ril.camera", + &dev->component[MMAL_COMPONENT_CAMERA]); + if (ret < 0) + goto unreg_mmal; + + if (dev->component[MMAL_COMPONENT_CAMERA]->outputs < + MMAL_CAMERA_PORT_COUNT) { + ret = -EINVAL; + goto unreg_camera; + } + + ret = set_camera_parameters(dev->instance, + dev->component[MMAL_COMPONENT_CAMERA]); + if (ret < 0) + goto unreg_camera; + + format = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_PREVIEW].format; + + format->encoding = MMAL_ENCODING_OPAQUE; + format->encoding_variant = MMAL_ENCODING_I420; + + format->es->video.width = 1024; + format->es->video.height = 768; + format->es->video.crop.x = 0; + format->es->video.crop.y = 0; + format->es->video.crop.width = 1024; + format->es->video.crop.height = 768; + format->es->video.frame_rate.num = PREVIEW_FRAME_RATE_NUM; + format->es->video.frame_rate.den = PREVIEW_FRAME_RATE_DEN; + + format = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_VIDEO].format; + + format->encoding = MMAL_ENCODING_OPAQUE; + format->encoding_variant = MMAL_ENCODING_I420; + + format->es->video.width = 1024; + format->es->video.height = 768; + format->es->video.crop.x = 0; + format->es->video.crop.y = 0; + format->es->video.crop.width = 1024; + format->es->video.crop.height = 768; + format->es->video.frame_rate.num = PREVIEW_FRAME_RATE_NUM; + format->es->video.frame_rate.den = PREVIEW_FRAME_RATE_DEN; + + format = + &dev->component[MMAL_COMPONENT_CAMERA]-> + output[MMAL_CAMERA_PORT_CAPTURE].format; + + format->encoding = MMAL_ENCODING_OPAQUE; + + format->es->video.width = 2592; + format->es->video.height = 1944; + format->es->video.crop.x = 0; + format->es->video.crop.y = 0; + format->es->video.crop.width = 2592; + format->es->video.crop.height = 1944; + format->es->video.frame_rate.num = 30; + format->es->video.frame_rate.den = 1; + + dev->capture.width = format->es->video.width; + dev->capture.height = format->es->video.height; + dev->capture.fmt = &formats[0]; + dev->capture.encode_component = NULL; + + /* get the preview component ready */ + ret = vchiq_mmal_component_init( + dev->instance, "ril.video_render", + &dev->component[MMAL_COMPONENT_PREVIEW]); + if (ret < 0) + goto unreg_camera; + + if (dev->component[MMAL_COMPONENT_PREVIEW]->inputs < 1) { + ret = -EINVAL; + pr_debug("too few input ports %d needed %d\n", + dev->component[MMAL_COMPONENT_PREVIEW]->inputs, 1); + goto unreg_preview; + } + + /* get the image encoder component ready */ + ret = vchiq_mmal_component_init( + dev->instance, "ril.image_encode", + &dev->component[MMAL_COMPONENT_IMAGE_ENCODE]); + if (ret < 0) + goto unreg_preview; + + if (dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->inputs < 1) { + ret = -EINVAL; + v4l2_err(&dev->v4l2_dev, "too few input ports %d needed %d\n", + dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->inputs, + 1); + goto unreg_image_encoder; + } + + /* get the video encoder component ready */ + ret = vchiq_mmal_component_init(dev->instance, "ril.video_encode", + &dev-> + component[MMAL_COMPONENT_VIDEO_ENCODE]); + if (ret < 0) + goto unreg_image_encoder; + + if (dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->inputs < 1) { + ret = -EINVAL; + v4l2_err(&dev->v4l2_dev, "too few input ports %d needed %d\n", + dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->inputs, + 1); + goto unreg_vid_encoder; + } + + { + unsigned int enable = 1; + vchiq_mmal_port_parameter_set( + dev->instance, + &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->control, + MMAL_PARAMETER_VIDEO_IMMUTABLE_INPUT, + &enable, sizeof(enable)); + + vchiq_mmal_port_parameter_set(dev->instance, + &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->control, + MMAL_PARAMETER_MINIMISE_FRAGMENTATION, + &enable, + sizeof(enable)); + } + ret = bm2835_mmal_set_all_camera_controls(dev); + if (ret < 0) + goto unreg_vid_encoder; + + return 0; + +unreg_vid_encoder: + pr_err("Cleanup: Destroy video encoder\n"); + vchiq_mmal_component_finalise( + dev->instance, + dev->component[MMAL_COMPONENT_VIDEO_ENCODE]); + +unreg_image_encoder: + pr_err("Cleanup: Destroy image encoder\n"); + vchiq_mmal_component_finalise( + dev->instance, + dev->component[MMAL_COMPONENT_IMAGE_ENCODE]); + +unreg_preview: + pr_err("Cleanup: Destroy video render\n"); + vchiq_mmal_component_finalise(dev->instance, + dev->component[MMAL_COMPONENT_PREVIEW]); + +unreg_camera: + pr_err("Cleanup: Destroy camera\n"); + vchiq_mmal_component_finalise(dev->instance, + dev->component[MMAL_COMPONENT_CAMERA]); + +unreg_mmal: + vchiq_mmal_finalise(dev->instance); + return ret; +} + +static int __init bm2835_mmal_init_device(struct bm2835_mmal_dev *dev, + struct video_device *vfd) +{ + int ret; + + *vfd = vdev_template; + + vfd->v4l2_dev = &dev->v4l2_dev; + + vfd->lock = &dev->mutex; + + vfd->queue = &dev->capture.vb_vidq; + + set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); + + /* video device needs to be able to access instance data */ + video_set_drvdata(vfd, dev); + + ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); + if (ret < 0) + return ret; + + v4l2_info(vfd->v4l2_dev, "V4L2 device registered as %s\n", + video_device_node_name(vfd)); + + return 0; +} + +static struct v4l2_format default_v4l2_format = { + .fmt.pix.pixelformat = V4L2_PIX_FMT_JPEG, + .fmt.pix.width = 1024, + .fmt.pix.bytesperline = 1024 * 3 / 2, + .fmt.pix.height = 768, + .fmt.pix.sizeimage = 1<<18, +}; + +static int __init bm2835_mmal_init(void) +{ + int ret; + struct bm2835_mmal_dev *dev; + struct vb2_queue *q; + + dev = kzalloc(sizeof(*gdev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + /* setup device defaults */ + dev->overlay.w.left = 150; + dev->overlay.w.top = 50; + dev->overlay.w.width = 1024; + dev->overlay.w.height = 768; + dev->overlay.clipcount = 0; + dev->overlay.field = V4L2_FIELD_NONE; + + dev->capture.fmt = &formats[3]; /* JPEG */ + + /* v4l device registration */ + snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), + "%s", BM2835_MMAL_MODULE_NAME); + ret = v4l2_device_register(NULL, &dev->v4l2_dev); + if (ret) + goto free_dev; + + /* setup v4l controls */ + ret = bm2835_mmal_init_controls(dev, &dev->ctrl_handler); + if (ret < 0) + goto unreg_dev; + dev->v4l2_dev.ctrl_handler = &dev->ctrl_handler; + + /* mmal init */ + ret = mmal_init(dev); + if (ret < 0) + goto unreg_dev; + + /* initialize queue */ + q = &dev->capture.vb_vidq; + memset(q, 0, sizeof(*q)); + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; + q->drv_priv = dev; + q->buf_struct_size = sizeof(struct mmal_buffer); + q->ops = &bm2835_mmal_video_qops; + q->mem_ops = &vb2_vmalloc_memops; + q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + ret = vb2_queue_init(q); + if (ret < 0) + goto unreg_dev; + + /* v4l2 core mutex used to protect all fops and v4l2 ioctls. */ + mutex_init(&dev->mutex); + + /* initialise video devices */ + ret = bm2835_mmal_init_device(dev, &dev->vdev); + if (ret < 0) + goto unreg_dev; + + ret = mmal_setup_components(dev, &default_v4l2_format); + if (ret < 0) { + v4l2_err(&dev->v4l2_dev, + "%s: could not setup components\n", __func__); + goto unreg_dev; + } + + v4l2_info(&dev->v4l2_dev, + "Broadcom 2835 MMAL video capture ver %s loaded.\n", + BM2835_MMAL_VERSION); + + gdev = dev; + return 0; + +unreg_dev: + v4l2_ctrl_handler_free(&dev->ctrl_handler); + v4l2_device_unregister(&dev->v4l2_dev); + +free_dev: + kfree(dev); + + v4l2_err(&dev->v4l2_dev, + "%s: error %d while loading driver\n", + BM2835_MMAL_MODULE_NAME, ret); + + return ret; +} + +static void __exit bm2835_mmal_exit(void) +{ + if (!gdev) + return; + + v4l2_info(&gdev->v4l2_dev, "unregistering %s\n", + video_device_node_name(&gdev->vdev)); + + video_unregister_device(&gdev->vdev); + + if (gdev->capture.encode_component) { + v4l2_dbg(1, bcm2835_v4l2_debug, &gdev->v4l2_dev, + "mmal_exit - disconnect tunnel\n"); + vchiq_mmal_port_connect_tunnel(gdev->instance, + gdev->capture.camera_port, NULL); + vchiq_mmal_component_disable(gdev->instance, + gdev->capture.encode_component); + } + vchiq_mmal_component_disable(gdev->instance, + gdev->component[MMAL_COMPONENT_CAMERA]); + + vchiq_mmal_component_finalise(gdev->instance, + gdev-> + component[MMAL_COMPONENT_VIDEO_ENCODE]); + + vchiq_mmal_component_finalise(gdev->instance, + gdev-> + component[MMAL_COMPONENT_IMAGE_ENCODE]); + + vchiq_mmal_component_finalise(gdev->instance, + gdev->component[MMAL_COMPONENT_PREVIEW]); + + vchiq_mmal_component_finalise(gdev->instance, + gdev->component[MMAL_COMPONENT_CAMERA]); + + vchiq_mmal_finalise(gdev->instance); + + v4l2_ctrl_handler_free(&gdev->ctrl_handler); + + v4l2_device_unregister(&gdev->v4l2_dev); + + kfree(gdev); +} + +module_init(bm2835_mmal_init); +module_exit(bm2835_mmal_exit); diff --git a/drivers/media/platform/bcm2835/bcm2835-camera.h b/drivers/media/platform/bcm2835/bcm2835-camera.h new file mode 100644 index 0000000..883eab7 --- /dev/null +++ b/drivers/media/platform/bcm2835/bcm2835-camera.h @@ -0,0 +1,113 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + * + * core driver device + */ + +#define V4L2_CTRL_COUNT 18 /* number of v4l controls */ + +enum { + MMAL_COMPONENT_CAMERA = 0, + MMAL_COMPONENT_PREVIEW, + MMAL_COMPONENT_IMAGE_ENCODE, + MMAL_COMPONENT_VIDEO_ENCODE, + MMAL_COMPONENT_COUNT +}; + +enum { + MMAL_CAMERA_PORT_PREVIEW = 0, + MMAL_CAMERA_PORT_VIDEO, + MMAL_CAMERA_PORT_CAPTURE, + MMAL_CAMERA_PORT_COUNT +}; + +#define PREVIEW_FRAME_RATE_NUM 30 +#define PREVIEW_FRAME_RATE_DEN 1 + +#define PREVIEW_LAYER 2 + +extern int bcm2835_v4l2_debug; + +struct bm2835_mmal_dev { + /* v4l2 devices */ + struct v4l2_device v4l2_dev; + struct video_device vdev; + struct mutex mutex; + + /* controls */ + struct v4l2_ctrl_handler ctrl_handler; + struct v4l2_ctrl *ctrls[V4L2_CTRL_COUNT]; + struct mmal_colourfx colourfx; + int hflip; + int vflip; + + /* allocated mmal instance and components */ + struct vchiq_mmal_instance *instance; + struct vchiq_mmal_component *component[MMAL_COMPONENT_COUNT]; + int camera_use_count; + + struct v4l2_window overlay; + + struct { + unsigned int width; /* width */ + unsigned int height; /* height */ + unsigned int stride; /* stride */ + struct mmal_fmt *fmt; + + /* H264 encode bitrate */ + int encode_bitrate; + /* H264 bitrate mode. CBR/VBR */ + int encode_bitrate_mode; + /* JPEG Q-factor */ + int q_factor; + + struct vb2_queue vb_vidq; + + /* VC start timestamp for streaming */ + s64 vc_start_timestamp; + /* Kernel start timestamp for streaming */ + struct timeval kernel_start_ts; + + struct vchiq_mmal_port *port; /* port being used for capture */ + /* camera port being used for capture */ + struct vchiq_mmal_port *camera_port; + /* component being used for encode */ + struct vchiq_mmal_component *encode_component; + /* number of frames remaining which driver should capture */ + unsigned int frame_count; + /* last frame completion */ + struct completion frame_cmplt; + + } capture; + +}; + +int bm2835_mmal_init_controls( + struct bm2835_mmal_dev *dev, + struct v4l2_ctrl_handler *hdl); + +int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev); + + +/* Debug helpers */ + +#define v4l2_dump_pix_format(level, debug, dev, pix_fmt, desc) \ +{ \ + v4l2_dbg(level, debug, dev, \ +"%s: w %u h %u field %u pfmt 0x%x bpl %u sz_img %u colorspace 0x%x priv %u\n", \ + desc == NULL ? "" : desc, \ + (pix_fmt)->width, (pix_fmt)->height, (pix_fmt)->field, \ + (pix_fmt)->pixelformat, (pix_fmt)->bytesperline, \ + (pix_fmt)->sizeimage, (pix_fmt)->colorspace, (pix_fmt)->priv); \ +} diff --git a/drivers/media/platform/bcm2835/controls.c b/drivers/media/platform/bcm2835/controls.c new file mode 100644 index 0000000..d1408e5 --- /dev/null +++ b/drivers/media/platform/bcm2835/controls.c @@ -0,0 +1,725 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "mmal-common.h" +#include "mmal-vchiq.h" +#include "mmal-parameters.h" +#include "bcm2835-camera.h" + +/* The supported V4L2_CID_AUTO_EXPOSURE_BIAS values are from -24 to +24. + * These are in 1/6th increments so the effective range is -4.0EV to +4.0EV. + */ +static const s64 ev_bias_qmenu[] = { + -24, -21, -18, -15, -12, -9, -6, -3, 0, 3, 6, 9, 12, 15, 18, 21, 24 +}; + +/* Supported ISO values + * ISOO = auto ISO + */ +static const s64 iso_qmenu[] = { + 0, 100, 200, 400, 800, +}; + +/* Supported video encode modes */ +static const s64 bitrate_mode_qmenu[] = { + (s64)V4L2_MPEG_VIDEO_BITRATE_MODE_VBR, + (s64)V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, +}; + + +enum bm2835_mmal_ctrl_type { + MMAL_CONTROL_TYPE_STD, + MMAL_CONTROL_TYPE_STD_MENU, + MMAL_CONTROL_TYPE_INT_MENU, + MMAL_CONTROL_TYPE_CLUSTER, /* special cluster entry */ +}; + +struct bm2835_mmal_v4l2_ctrl; + +typedef int(bm2835_mmal_v4l2_ctrl_cb)( + struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl); + +struct bm2835_mmal_v4l2_ctrl { + u32 id; /* v4l2 control identifier */ + enum bm2835_mmal_ctrl_type type; + /* control minimum value or + * mask for MMAL_CONTROL_TYPE_STD_MENU */ + s32 min; + s32 max; /* maximum value of control */ + s32 def; /* default value of control */ + s32 step; /* step size of the control */ + const s64 *imenu; /* integer menu array */ + u32 mmal_id; /* mmal parameter id */ + bm2835_mmal_v4l2_ctrl_cb *setter; +}; + +struct v4l2_to_mmal_effects_setting { + u32 v4l2_effect; + u32 mmal_effect; + s32 col_fx_enable; + s32 col_fx_fixed_cbcr; + u32 u; + u32 v; + u32 num_effect_params; + u32 effect_params[MMAL_MAX_IMAGEFX_PARAMETERS]; +}; + +static const struct v4l2_to_mmal_effects_setting + v4l2_to_mmal_effects_values[] = { + { V4L2_COLORFX_NONE, MMAL_PARAM_IMAGEFX_NONE, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_BW, MMAL_PARAM_IMAGEFX_NONE, + 1, 0, 128, 128, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_SEPIA, MMAL_PARAM_IMAGEFX_NONE, + 1, 0, 87, 151, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_NEGATIVE, MMAL_PARAM_IMAGEFX_NEGATIVE, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_EMBOSS, MMAL_PARAM_IMAGEFX_EMBOSS, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_SKETCH, MMAL_PARAM_IMAGEFX_SKETCH, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_SKY_BLUE, MMAL_PARAM_IMAGEFX_PASTEL, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_GRASS_GREEN, MMAL_PARAM_IMAGEFX_WATERCOLOUR, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_SKIN_WHITEN, MMAL_PARAM_IMAGEFX_WASHEDOUT, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_VIVID, MMAL_PARAM_IMAGEFX_SATURATION, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_AQUA, MMAL_PARAM_IMAGEFX_NONE, + 1, 0, 171, 121, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_ART_FREEZE, MMAL_PARAM_IMAGEFX_HATCH, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_SILHOUETTE, MMAL_PARAM_IMAGEFX_FILM, + 0, 0, 0, 0, 0, {0, 0, 0, 0, 0} }, + { V4L2_COLORFX_SOLARIZATION, MMAL_PARAM_IMAGEFX_SOLARIZE, + 0, 0, 0, 0, 5, {1, 128, 160, 160, 48} }, + { V4L2_COLORFX_ANTIQUE, MMAL_PARAM_IMAGEFX_COLOURBALANCE, + 0, 0, 0, 0, 3, {108, 274, 238, 0, 0} }, + { V4L2_COLORFX_SET_CBCR, MMAL_PARAM_IMAGEFX_NONE, + 1, 1, 0, 0, 0, {0, 0, 0, 0, 0} } +}; + + +/* control handlers*/ + +static int ctrl_set_rational(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + struct { + s32 num; /**< Numerator */ + s32 den; /**< Denominator */ + } rational_value; + struct vchiq_mmal_port *control; + + control = &dev->component[MMAL_COMPONENT_CAMERA]->control; + + rational_value.num = ctrl->val; + rational_value.den = 100; + + return vchiq_mmal_port_parameter_set(dev->instance, control, + mmal_ctrl->mmal_id, + &rational_value, + sizeof(rational_value)); +} + +static int ctrl_set_value(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + u32 u32_value; + struct vchiq_mmal_port *control; + + control = &dev->component[MMAL_COMPONENT_CAMERA]->control; + + u32_value = ctrl->val; + + return vchiq_mmal_port_parameter_set(dev->instance, control, + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); +} + +static int ctrl_set_rotate(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + int ret; + u32 u32_value; + struct vchiq_mmal_component *camera; + + camera = dev->component[MMAL_COMPONENT_CAMERA]; + + u32_value = ((ctrl->val % 360) / 90) * 90; + + ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[0], + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); + if (ret < 0) + return ret; + + ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[1], + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); + if (ret < 0) + return ret; + + ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[2], + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); + + return ret; +} + +static int ctrl_set_flip(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + int ret; + u32 u32_value; + struct vchiq_mmal_component *camera; + + if (ctrl->id == V4L2_CID_HFLIP) + dev->hflip = ctrl->val; + else + dev->vflip = ctrl->val; + + camera = dev->component[MMAL_COMPONENT_CAMERA]; + + if (dev->hflip && dev->vflip) + u32_value = MMAL_PARAM_MIRROR_BOTH; + else if (dev->hflip) + u32_value = MMAL_PARAM_MIRROR_HORIZONTAL; + else if (dev->vflip) + u32_value = MMAL_PARAM_MIRROR_VERTICAL; + else + u32_value = MMAL_PARAM_MIRROR_NONE; + + ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[0], + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); + if (ret < 0) + return ret; + + ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[1], + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); + if (ret < 0) + return ret; + + ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[2], + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); + + return ret; + +} + +static int ctrl_set_exposure(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + u32 u32_value; + struct vchiq_mmal_port *control; + + control = &dev->component[MMAL_COMPONENT_CAMERA]->control; + + switch (ctrl->val) { + case V4L2_EXPOSURE_AUTO: + u32_value = MMAL_PARAM_EXPOSUREMODE_AUTO; + break; + + case V4L2_EXPOSURE_MANUAL: + u32_value = MMAL_PARAM_EXPOSUREMODE_OFF; + break; + + case V4L2_EXPOSURE_SHUTTER_PRIORITY: + u32_value = MMAL_PARAM_EXPOSUREMODE_SPORTS; + break; + + case V4L2_EXPOSURE_APERTURE_PRIORITY: + u32_value = MMAL_PARAM_EXPOSUREMODE_NIGHT; + break; + + } + + /* todo: what about the other ten modes there are MMAL parameters for */ + return vchiq_mmal_port_parameter_set(dev->instance, control, + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); +} + +static int ctrl_set_metering_mode(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + u32 u32_value; + struct vchiq_mmal_port *control; + + control = &dev->component[MMAL_COMPONENT_CAMERA]->control; + + switch (ctrl->val) { + case V4L2_EXPOSURE_METERING_AVERAGE: + u32_value = MMAL_PARAM_EXPOSUREMETERINGMODE_AVERAGE; + break; + + case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED: + u32_value = MMAL_PARAM_EXPOSUREMETERINGMODE_BACKLIT; + break; + + case V4L2_EXPOSURE_METERING_SPOT: + u32_value = MMAL_PARAM_EXPOSUREMETERINGMODE_SPOT; + break; + + /* todo matrix weighting not added to Linux API till 3.9 + case V4L2_EXPOSURE_METERING_MATRIX: + u32_value = MMAL_PARAM_EXPOSUREMETERINGMODE_MATRIX; + break; + */ + + } + + return vchiq_mmal_port_parameter_set(dev->instance, control, + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); +} + +static int ctrl_set_awb_mode(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + u32 u32_value; + struct vchiq_mmal_port *control; + + control = &dev->component[MMAL_COMPONENT_CAMERA]->control; + + switch (ctrl->val) { + case V4L2_WHITE_BALANCE_MANUAL: + u32_value = MMAL_PARAM_AWBMODE_OFF; + break; + + case V4L2_WHITE_BALANCE_AUTO: + u32_value = MMAL_PARAM_AWBMODE_AUTO; + break; + + case V4L2_WHITE_BALANCE_INCANDESCENT: + u32_value = MMAL_PARAM_AWBMODE_INCANDESCENT; + break; + + case V4L2_WHITE_BALANCE_FLUORESCENT: + u32_value = MMAL_PARAM_AWBMODE_FLUORESCENT; + break; + + case V4L2_WHITE_BALANCE_FLUORESCENT_H: + u32_value = MMAL_PARAM_AWBMODE_TUNGSTEN; + break; + + case V4L2_WHITE_BALANCE_HORIZON: + u32_value = MMAL_PARAM_AWBMODE_HORIZON; + break; + + case V4L2_WHITE_BALANCE_DAYLIGHT: + u32_value = MMAL_PARAM_AWBMODE_SUNLIGHT; + break; + + case V4L2_WHITE_BALANCE_FLASH: + u32_value = MMAL_PARAM_AWBMODE_FLASH; + break; + + case V4L2_WHITE_BALANCE_CLOUDY: + u32_value = MMAL_PARAM_AWBMODE_CLOUDY; + break; + + case V4L2_WHITE_BALANCE_SHADE: + u32_value = MMAL_PARAM_AWBMODE_SHADE; + break; + + } + + return vchiq_mmal_port_parameter_set(dev->instance, control, + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); +} + +static int ctrl_set_image_effect(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + int ret = -EINVAL; + int i, j; + struct vchiq_mmal_port *control; + struct mmal_parameter_imagefx_parameters imagefx; + + for (i = 0; i < ARRAY_SIZE(v4l2_to_mmal_effects_values); i++) { + if (ctrl->val == v4l2_to_mmal_effects_values[i].v4l2_effect) { + + imagefx.effect = + v4l2_to_mmal_effects_values[i].mmal_effect; + imagefx.num_effect_params = + v4l2_to_mmal_effects_values[i].num_effect_params; + + if (imagefx.num_effect_params > MMAL_MAX_IMAGEFX_PARAMETERS) + imagefx.num_effect_params = MMAL_MAX_IMAGEFX_PARAMETERS; + + for (j = 0; j < imagefx.num_effect_params; j++) + imagefx.effect_parameter[j] = + v4l2_to_mmal_effects_values[i].effect_params[j]; + + dev->colourfx.enable = + v4l2_to_mmal_effects_values[i].col_fx_enable; + if (!v4l2_to_mmal_effects_values[i].col_fx_fixed_cbcr) { + dev->colourfx.u = + v4l2_to_mmal_effects_values[i].u; + dev->colourfx.v = + v4l2_to_mmal_effects_values[i].v; + } + + control = &dev->component[MMAL_COMPONENT_CAMERA]->control; + + ret = vchiq_mmal_port_parameter_set( + dev->instance, control, + MMAL_PARAMETER_IMAGE_EFFECT_PARAMETERS, + &imagefx, sizeof(imagefx)); + if (ret) + goto exit; + + ret = vchiq_mmal_port_parameter_set( + dev->instance, control, + MMAL_PARAMETER_COLOUR_EFFECT, + &dev->colourfx, sizeof(dev->colourfx)); + } + } + +exit: + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "mmal_ctrl:%p ctrl id:0x%x ctrl val:%d imagefx:0x%x color_effect:%s u:%d v:%d ret %d(%d)\n", + mmal_ctrl, ctrl->id, ctrl->val, imagefx.effect, + dev->colourfx.enable ? "true" : "false", + dev->colourfx.u, dev->colourfx.v, + ret, (ret == 0 ? 0 : -EINVAL)); + return (ret == 0 ? 0 : EINVAL); +} + +static int ctrl_set_colfx(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + int ret = -EINVAL; + struct vchiq_mmal_port *control; + + control = &dev->component[MMAL_COMPONENT_CAMERA]->control; + + dev->colourfx.enable = (ctrl->val & 0xff00) >> 8; + dev->colourfx.enable = ctrl->val & 0xff; + + ret = vchiq_mmal_port_parameter_set(dev->instance, control, + MMAL_PARAMETER_COLOUR_EFFECT, + &dev->colourfx, sizeof(dev->colourfx)); + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "After: mmal_ctrl:%p ctrl id:0x%x ctrl val:%d ret %d(%d)\n", + mmal_ctrl, ctrl->id, ctrl->val, ret, + (ret == 0 ? 0 : -EINVAL)); + return (ret == 0 ? 0 : EINVAL); +} + +static int ctrl_set_bitrate(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + int ret; + struct vchiq_mmal_port *encoder_out; + + dev->capture.encode_bitrate = ctrl->val; + + encoder_out = &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0]; + + ret = vchiq_mmal_port_parameter_set(dev->instance, encoder_out, + mmal_ctrl->mmal_id, + &ctrl->val, sizeof(ctrl->val)); + ret = 0; + return ret; +} + +static int ctrl_set_bitrate_mode(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + u32 bitrate_mode; + struct vchiq_mmal_port *encoder_out; + + encoder_out = &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0]; + + dev->capture.encode_bitrate_mode = ctrl->val; + switch (ctrl->val) { + default: + case V4L2_MPEG_VIDEO_BITRATE_MODE_VBR: + bitrate_mode = MMAL_VIDEO_RATECONTROL_VARIABLE; + break; + case V4L2_MPEG_VIDEO_BITRATE_MODE_CBR: + bitrate_mode = MMAL_VIDEO_RATECONTROL_CONSTANT; + break; + } + + vchiq_mmal_port_parameter_set(dev->instance, encoder_out, + mmal_ctrl->mmal_id, + &bitrate_mode, + sizeof(bitrate_mode)); + return 0; +} + +static int ctrl_set_q_factor(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +{ + u32 u32_value; + struct vchiq_mmal_port *jpeg_out; + + jpeg_out = &dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->output[0]; + + u32_value = ctrl->val; + + return vchiq_mmal_port_parameter_set(dev->instance, jpeg_out, + mmal_ctrl->mmal_id, + &u32_value, sizeof(u32_value)); +} + +static int bm2835_mmal_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct bm2835_mmal_dev *dev = + container_of(ctrl->handler, struct bm2835_mmal_dev, + ctrl_handler); + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl = ctrl->priv; + + if ((mmal_ctrl == NULL) || + (mmal_ctrl->id != ctrl->id) || + (mmal_ctrl->setter == NULL)) { + pr_warn("mmal_ctrl:%p ctrl id:%d\n", mmal_ctrl, ctrl->id); + return -EINVAL; + } + + return mmal_ctrl->setter(dev, ctrl, mmal_ctrl); +} + +static const struct v4l2_ctrl_ops bm2835_mmal_ctrl_ops = { + .s_ctrl = bm2835_mmal_s_ctrl, +}; + + + +static const struct bm2835_mmal_v4l2_ctrl v4l2_ctrls[V4L2_CTRL_COUNT] = { + { + V4L2_CID_SATURATION, MMAL_CONTROL_TYPE_STD, + -100, 100, 0, 1, NULL, + MMAL_PARAMETER_SATURATION, &ctrl_set_rational + }, + { + V4L2_CID_SHARPNESS, MMAL_CONTROL_TYPE_STD, + -100, 100, 0, 1, NULL, + MMAL_PARAMETER_SHARPNESS, &ctrl_set_rational + }, + { + V4L2_CID_CONTRAST, MMAL_CONTROL_TYPE_STD, + -100, 100, 0, 1, NULL, + MMAL_PARAMETER_CONTRAST, &ctrl_set_rational + }, + { + V4L2_CID_BRIGHTNESS, MMAL_CONTROL_TYPE_STD, + 0, 100, 50, 1, NULL, + MMAL_PARAMETER_BRIGHTNESS, &ctrl_set_rational + }, + { + V4L2_CID_ISO_SENSITIVITY, MMAL_CONTROL_TYPE_INT_MENU, + 0, ARRAY_SIZE(iso_qmenu) - 1, 0, 1, iso_qmenu, + MMAL_PARAMETER_ISO, &ctrl_set_value + }, + { + V4L2_CID_IMAGE_STABILIZATION, MMAL_CONTROL_TYPE_STD, + 0, 1, 0, 1, NULL, + MMAL_PARAMETER_VIDEO_STABILISATION, &ctrl_set_value + }, +/* { + 0, MMAL_CONTROL_TYPE_CLUSTER, 3, 1, 0, NULL, 0, NULL + }, +*/ { + V4L2_CID_EXPOSURE_AUTO, MMAL_CONTROL_TYPE_STD_MENU, + ~0x03, 3, V4L2_EXPOSURE_AUTO, 0, NULL, + MMAL_PARAMETER_EXPOSURE_MODE, &ctrl_set_exposure + }, +/* todo this needs mixing in with set exposure + { + V4L2_CID_SCENE_MODE, MMAL_CONTROL_TYPE_STD_MENU, + }, + */ + { + V4L2_CID_AUTO_EXPOSURE_BIAS, MMAL_CONTROL_TYPE_INT_MENU, + 0, ARRAY_SIZE(ev_bias_qmenu) - 1, + (ARRAY_SIZE(ev_bias_qmenu)+1)/2 - 1, 0, ev_bias_qmenu, + MMAL_PARAMETER_EXPOSURE_COMP, &ctrl_set_value + }, + { + V4L2_CID_EXPOSURE_METERING, + MMAL_CONTROL_TYPE_STD_MENU, + ~0x7, 2, V4L2_EXPOSURE_METERING_AVERAGE, 0, NULL, + MMAL_PARAMETER_EXP_METERING_MODE, &ctrl_set_metering_mode + }, + { + V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE, + MMAL_CONTROL_TYPE_STD_MENU, + ~0x3fe, 9, V4L2_WHITE_BALANCE_AUTO, 0, NULL, + MMAL_PARAMETER_AWB_MODE, &ctrl_set_awb_mode + }, + { + V4L2_CID_COLORFX, MMAL_CONTROL_TYPE_STD_MENU, + 0, 15, V4L2_COLORFX_NONE, 0, NULL, + MMAL_PARAMETER_IMAGE_EFFECT, &ctrl_set_image_effect + }, + { + V4L2_CID_COLORFX_CBCR, MMAL_CONTROL_TYPE_STD, + 0, 0xffff, 0x8080, 1, NULL, + MMAL_PARAMETER_COLOUR_EFFECT, &ctrl_set_colfx + }, + { + V4L2_CID_ROTATE, MMAL_CONTROL_TYPE_STD, + 0, 360, 0, 90, NULL, + MMAL_PARAMETER_ROTATION, &ctrl_set_rotate + }, + { + V4L2_CID_HFLIP, MMAL_CONTROL_TYPE_STD, + 0, 1, 0, 1, NULL, + MMAL_PARAMETER_MIRROR, &ctrl_set_flip + }, + { + V4L2_CID_VFLIP, MMAL_CONTROL_TYPE_STD, + 0, 1, 0, 1, NULL, + MMAL_PARAMETER_MIRROR, &ctrl_set_flip + }, + { + V4L2_CID_MPEG_VIDEO_BITRATE_MODE, MMAL_CONTROL_TYPE_STD_MENU, + 0, ARRAY_SIZE(bitrate_mode_qmenu) - 1, + 0, 0, bitrate_mode_qmenu, + MMAL_PARAMETER_RATECONTROL, &ctrl_set_bitrate_mode + }, + { + V4L2_CID_MPEG_VIDEO_BITRATE, MMAL_CONTROL_TYPE_STD, + 25*1000, 25*1000*1000, 10*1000*1000, 25*1000, NULL, + MMAL_PARAMETER_VIDEO_BIT_RATE, &ctrl_set_bitrate + }, + { + V4L2_CID_JPEG_COMPRESSION_QUALITY, MMAL_CONTROL_TYPE_STD, + 0, 100, + 30, 1, NULL, + MMAL_PARAMETER_JPEG_Q_FACTOR, &ctrl_set_q_factor + }, +}; + +int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev) +{ + int c; + int ret; + + for (c = 0; c < V4L2_CTRL_COUNT; c++) { + if ((dev->ctrls[c]) && (v4l2_ctrls[c].setter)) { + ret = v4l2_ctrls[c].setter(dev, dev->ctrls[c], + &v4l2_ctrls[c]); + if (ret) + break; + } + } + return ret; +} + +int bm2835_mmal_init_controls(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl_handler *hdl) +{ + int c; + const struct bm2835_mmal_v4l2_ctrl *ctrl; + + v4l2_ctrl_handler_init(hdl, V4L2_CTRL_COUNT); + + for (c = 0; c < V4L2_CTRL_COUNT; c++) { + ctrl = &v4l2_ctrls[c]; + + switch (ctrl->type) { + case MMAL_CONTROL_TYPE_STD: + dev->ctrls[c] = v4l2_ctrl_new_std(hdl, + &bm2835_mmal_ctrl_ops, ctrl->id, + ctrl->min, ctrl->max, ctrl->step, ctrl->def); + break; + + case MMAL_CONTROL_TYPE_STD_MENU: + dev->ctrls[c] = v4l2_ctrl_new_std_menu(hdl, + &bm2835_mmal_ctrl_ops, ctrl->id, + ctrl->max, ctrl->min, ctrl->def); + break; + + case MMAL_CONTROL_TYPE_INT_MENU: + dev->ctrls[c] = v4l2_ctrl_new_int_menu(hdl, + &bm2835_mmal_ctrl_ops, ctrl->id, + ctrl->max, ctrl->def, ctrl->imenu); + break; + + case MMAL_CONTROL_TYPE_CLUSTER: + /* skip this entry when constructing controls */ + continue; + } + + if (hdl->error) + break; + + dev->ctrls[c]->priv = (void *)ctrl; + } + + if (hdl->error) { + pr_err("error adding control %d/%d id 0x%x\n", c, + V4L2_CTRL_COUNT, ctrl->id); + return hdl->error; + } + + for (c = 0; c < V4L2_CTRL_COUNT; c++) { + ctrl = &v4l2_ctrls[c]; + + switch (ctrl->type) { + case MMAL_CONTROL_TYPE_CLUSTER: + v4l2_ctrl_auto_cluster(ctrl->min, + &dev->ctrls[c+1], + ctrl->max, + ctrl->def); + break; + + case MMAL_CONTROL_TYPE_STD: + case MMAL_CONTROL_TYPE_STD_MENU: + case MMAL_CONTROL_TYPE_INT_MENU: + break; + } + + } + + return 0; +} diff --git a/drivers/media/platform/bcm2835/mmal-common.h b/drivers/media/platform/bcm2835/mmal-common.h new file mode 100644 index 0000000..602b4a7 --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-common.h @@ -0,0 +1,52 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + * + * MMAL structures + * + */ + +#define MMAL_FOURCC(a, b, c, d) ((a) | (b << 8) | (c << 16) | (d << 24)) +#define MMAL_MAGIC MMAL_FOURCC('m', 'm', 'a', 'l') + +/** Special value signalling that time is not known */ +#define MMAL_TIME_UNKNOWN (1LL<<63) + +/* mapping between v4l and mmal video modes */ +struct mmal_fmt { + char *name; + u32 fourcc; /* v4l2 format id */ + u32 mmal; + int depth; + u32 mmal_component; /* MMAL component index to be used to encode */ +}; + +/* buffer for one video frame */ +struct mmal_buffer { + /* v4l buffer data -- must be first */ + struct vb2_buffer vb; + + /* list of buffers available */ + struct list_head list; + + void *buffer; /* buffer pointer */ + unsigned long buffer_size; /* size of allocated buffer */ +}; + +/* */ +struct mmal_colourfx { + s32 enable; + u32 u; + u32 v; +}; + diff --git a/drivers/media/platform/bcm2835/mmal-encodings.h b/drivers/media/platform/bcm2835/mmal-encodings.h new file mode 100644 index 0000000..856e80e --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-encodings.h @@ -0,0 +1,93 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + */ + +#define MMAL_ENCODING_H264 MMAL_FOURCC('H', '2', '6', '4') +#define MMAL_ENCODING_H263 MMAL_FOURCC('H', '2', '6', '3') +#define MMAL_ENCODING_MP4V MMAL_FOURCC('M', 'P', '4', 'V') +#define MMAL_ENCODING_MP2V MMAL_FOURCC('M', 'P', '2', 'V') +#define MMAL_ENCODING_MP1V MMAL_FOURCC('M', 'P', '1', 'V') +#define MMAL_ENCODING_WMV3 MMAL_FOURCC('W', 'M', 'V', '3') +#define MMAL_ENCODING_WMV2 MMAL_FOURCC('W', 'M', 'V', '2') +#define MMAL_ENCODING_WMV1 MMAL_FOURCC('W', 'M', 'V', '1') +#define MMAL_ENCODING_WVC1 MMAL_FOURCC('W', 'V', 'C', '1') +#define MMAL_ENCODING_VP8 MMAL_FOURCC('V', 'P', '8', ' ') +#define MMAL_ENCODING_VP7 MMAL_FOURCC('V', 'P', '7', ' ') +#define MMAL_ENCODING_VP6 MMAL_FOURCC('V', 'P', '6', ' ') +#define MMAL_ENCODING_THEORA MMAL_FOURCC('T', 'H', 'E', 'O') +#define MMAL_ENCODING_SPARK MMAL_FOURCC('S', 'P', 'R', 'K') + +#define MMAL_ENCODING_JPEG MMAL_FOURCC('J', 'P', 'E', 'G') +#define MMAL_ENCODING_GIF MMAL_FOURCC('G', 'I', 'F', ' ') +#define MMAL_ENCODING_PNG MMAL_FOURCC('P', 'N', 'G', ' ') +#define MMAL_ENCODING_PPM MMAL_FOURCC('P', 'P', 'M', ' ') +#define MMAL_ENCODING_TGA MMAL_FOURCC('T', 'G', 'A', ' ') +#define MMAL_ENCODING_BMP MMAL_FOURCC('B', 'M', 'P', ' ') + +#define MMAL_ENCODING_I420 MMAL_FOURCC('I', '4', '2', '0') +#define MMAL_ENCODING_I420_SLICE MMAL_FOURCC('S', '4', '2', '0') +#define MMAL_ENCODING_YV12 MMAL_FOURCC('Y', 'V', '1', '2') +#define MMAL_ENCODING_I422 MMAL_FOURCC('I', '4', '2', '2') +#define MMAL_ENCODING_I422_SLICE MMAL_FOURCC('S', '4', '2', '2') +#define MMAL_ENCODING_YUYV MMAL_FOURCC('Y', 'U', 'Y', 'V') +#define MMAL_ENCODING_YVYU MMAL_FOURCC('Y', 'V', 'Y', 'U') +#define MMAL_ENCODING_UYVY MMAL_FOURCC('U', 'Y', 'V', 'Y') +#define MMAL_ENCODING_VYUY MMAL_FOURCC('V', 'Y', 'U', 'Y') +#define MMAL_ENCODING_NV12 MMAL_FOURCC('N', 'V', '1', '2') +#define MMAL_ENCODING_NV21 MMAL_FOURCC('N', 'V', '2', '1') +#define MMAL_ENCODING_ARGB MMAL_FOURCC('A', 'R', 'G', 'B') +#define MMAL_ENCODING_RGBA MMAL_FOURCC('R', 'G', 'B', 'A') +#define MMAL_ENCODING_ABGR MMAL_FOURCC('A', 'B', 'G', 'R') +#define MMAL_ENCODING_BGRA MMAL_FOURCC('B', 'G', 'R', 'A') +#define MMAL_ENCODING_RGB16 MMAL_FOURCC('R', 'G', 'B', '2') +#define MMAL_ENCODING_RGB24 MMAL_FOURCC('R', 'G', 'B', '3') +#define MMAL_ENCODING_RGB32 MMAL_FOURCC('R', 'G', 'B', '4') +#define MMAL_ENCODING_BGR16 MMAL_FOURCC('B', 'G', 'R', '2') +#define MMAL_ENCODING_BGR24 MMAL_FOURCC('B', 'G', 'R', '3') +#define MMAL_ENCODING_BGR32 MMAL_FOURCC('B', 'G', 'R', '4') + +/** SAND Video (YUVUV128) format, native format understood by VideoCore. + * This format is *not* opaque - if requested you will receive full frames + * of YUV_UV video. + */ +#define MMAL_ENCODING_YUVUV128 MMAL_FOURCC('S', 'A', 'N', 'D') + +/** VideoCore opaque image format, image handles are returned to + * the host but not the actual image data. + */ +#define MMAL_ENCODING_OPAQUE MMAL_FOURCC('O', 'P', 'Q', 'V') + +/** An EGL image handle + */ +#define MMAL_ENCODING_EGL_IMAGE MMAL_FOURCC('E', 'G', 'L', 'I') + +/* }@ */ + +/** \name Pre-defined audio encodings */ +/* @{ */ +#define MMAL_ENCODING_PCM_UNSIGNED_BE MMAL_FOURCC('P', 'C', 'M', 'U') +#define MMAL_ENCODING_PCM_UNSIGNED_LE MMAL_FOURCC('p', 'c', 'm', 'u') +#define MMAL_ENCODING_PCM_SIGNED_BE MMAL_FOURCC('P', 'C', 'M', 'S') +#define MMAL_ENCODING_PCM_SIGNED_LE MMAL_FOURCC('p', 'c', 'm', 's') +#define MMAL_ENCODING_PCM_FLOAT_BE MMAL_FOURCC('P', 'C', 'M', 'F') +#define MMAL_ENCODING_PCM_FLOAT_LE MMAL_FOURCC('p', 'c', 'm', 'f') + +/* Pre-defined H264 encoding variants */ + +/** ISO 14496-10 Annex B byte stream format */ +#define MMAL_ENCODING_VARIANT_H264_DEFAULT 0 +/** ISO 14496-15 AVC stream format */ +#define MMAL_ENCODING_VARIANT_H264_AVC1 MMAL_FOURCC('A', 'V', 'C', '1') +/** Implicitly delineated NAL units without emulation prevention */ +#define MMAL_ENCODING_VARIANT_H264_RAW MMAL_FOURCC('R', 'A', 'W', ' ') diff --git a/drivers/media/platform/bcm2835/mmal-msg-common.h b/drivers/media/platform/bcm2835/mmal-msg-common.h new file mode 100644 index 0000000..66e8a6e --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-msg-common.h @@ -0,0 +1,50 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + */ + +#ifndef MMAL_MSG_COMMON_H +#define MMAL_MSG_COMMON_H + +enum mmal_msg_status { + MMAL_MSG_STATUS_SUCCESS = 0, /**< Success */ + MMAL_MSG_STATUS_ENOMEM, /**< Out of memory */ + MMAL_MSG_STATUS_ENOSPC, /**< Out of resources other than memory */ + MMAL_MSG_STATUS_EINVAL, /**< Argument is invalid */ + MMAL_MSG_STATUS_ENOSYS, /**< Function not implemented */ + MMAL_MSG_STATUS_ENOENT, /**< No such file or directory */ + MMAL_MSG_STATUS_ENXIO, /**< No such device or address */ + MMAL_MSG_STATUS_EIO, /**< I/O error */ + MMAL_MSG_STATUS_ESPIPE, /**< Illegal seek */ + MMAL_MSG_STATUS_ECORRUPT, /**< Data is corrupt \attention */ + MMAL_MSG_STATUS_ENOTREADY, /**< Component is not ready */ + MMAL_MSG_STATUS_ECONFIG, /**< Component is not configured */ + MMAL_MSG_STATUS_EISCONN, /**< Port is already connected */ + MMAL_MSG_STATUS_ENOTCONN, /**< Port is disconnected */ + MMAL_MSG_STATUS_EAGAIN, /**< Resource temporarily unavailable. */ + MMAL_MSG_STATUS_EFAULT, /**< Bad address */ +}; + +struct mmal_rect { + s32 x; /**< x coordinate (from left) */ + s32 y; /**< y coordinate (from top) */ + s32 width; /**< width */ + s32 height; /**< height */ +}; + +struct mmal_rational { + s32 num; /**< Numerator */ + s32 den; /**< Denominator */ +}; + +#endif /* MMAL_MSG_COMMON_H */ diff --git a/drivers/media/platform/bcm2835/mmal-msg-format.h b/drivers/media/platform/bcm2835/mmal-msg-format.h new file mode 100644 index 0000000..123d86e --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-msg-format.h @@ -0,0 +1,81 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + */ + +#ifndef MMAL_MSG_FORMAT_H +#define MMAL_MSG_FORMAT_H + +#include "mmal-msg-common.h" + +/* MMAL_ES_FORMAT_T */ + + +struct mmal_audio_format { + u32 channels; /**< Number of audio channels */ + u32 sample_rate; /**< Sample rate */ + + u32 bits_per_sample; /**< Bits per sample */ + u32 block_align; /**< Size of a block of data */ +}; + +struct mmal_video_format { + u32 width; /**< Width of frame in pixels */ + u32 height; /**< Height of frame in rows of pixels */ + struct mmal_rect crop; /**< Visible region of the frame */ + struct mmal_rational frame_rate; /**< Frame rate */ + struct mmal_rational par; /**< Pixel aspect ratio */ + + /* FourCC specifying the color space of the video stream. See the + * \ref MmalColorSpace "pre-defined color spaces" for some examples. + */ + u32 color_space; +}; + +struct mmal_subpicture_format { + u32 x_offset; + u32 y_offset; +}; + +union mmal_es_specific_format { + struct mmal_audio_format audio; + struct mmal_video_format video; + struct mmal_subpicture_format subpicture; +}; + +/** Definition of an elementary stream format (MMAL_ES_FORMAT_T) */ +struct mmal_es_format { + u32 type; /* enum mmal_es_type */ + + u32 encoding; /* FourCC specifying encoding of the elementary stream.*/ + u32 encoding_variant; /* FourCC specifying the specific + * encoding variant of the elementary + * stream. + */ + + union mmal_es_specific_format *es; /* TODO: pointers in + * message serialisation?!? + */ + /* Type specific + * information for the + * elementary stream + */ + + u32 bitrate; /**< Bitrate in bits per second */ + u32 flags; /**< Flags describing properties of the elementary stream. */ + + u32 extradata_size; /**< Size of the codec specific data */ + u8 *extradata; /**< Codec specific data */ +}; + +#endif /* MMAL_MSG_FORMAT_H */ diff --git a/drivers/media/platform/bcm2835/mmal-msg-port.h b/drivers/media/platform/bcm2835/mmal-msg-port.h new file mode 100644 index 0000000..a55c1ea --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-msg-port.h @@ -0,0 +1,107 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + */ + +/* MMAL_PORT_TYPE_T */ +enum mmal_port_type { + MMAL_PORT_TYPE_UNKNOWN = 0, /**< Unknown port type */ + MMAL_PORT_TYPE_CONTROL, /**< Control port */ + MMAL_PORT_TYPE_INPUT, /**< Input port */ + MMAL_PORT_TYPE_OUTPUT, /**< Output port */ + MMAL_PORT_TYPE_CLOCK, /**< Clock port */ +}; + +/** The port is pass-through and doesn't need buffer headers allocated */ +#define MMAL_PORT_CAPABILITY_PASSTHROUGH 0x01 +/** The port wants to allocate the buffer payloads. + * This signals a preference that payload allocation should be done + * on this port for efficiency reasons. */ +#define MMAL_PORT_CAPABILITY_ALLOCATION 0x02 +/** The port supports format change events. + * This applies to input ports and is used to let the client know + * whether the port supports being reconfigured via a format + * change event (i.e. without having to disable the port). */ +#define MMAL_PORT_CAPABILITY_SUPPORTS_EVENT_FORMAT_CHANGE 0x04 + +/* mmal port structure (MMAL_PORT_T) + * + * most elements are informational only, the pointer values for + * interogation messages are generally provided as additional + * strucures within the message. When used to set values only teh + * buffer_num, buffer_size and userdata parameters are writable. + */ +struct mmal_port { + void *priv; /* Private member used by the framework */ + const char *name; /* Port name. Used for debugging purposes (RO) */ + + u32 type; /* Type of the port (RO) enum mmal_port_type */ + u16 index; /* Index of the port in its type list (RO) */ + u16 index_all; /* Index of the port in the list of all ports (RO) */ + + u32 is_enabled; /* Indicates whether the port is enabled or not (RO) */ + struct mmal_es_format *format; /* Format of the elementary stream */ + + u32 buffer_num_min; /* Minimum number of buffers the port + * requires (RO). This is set by the + * component. + */ + + u32 buffer_size_min; /* Minimum size of buffers the port + * requires (RO). This is set by the + * component. + */ + + u32 buffer_alignment_min; /* Minimum alignment requirement for + * the buffers (RO). A value of + * zero means no special alignment + * requirements. This is set by the + * component. + */ + + u32 buffer_num_recommended; /* Number of buffers the port + * recommends for optimal + * performance (RO). A value of + * zero means no special + * recommendation. This is set + * by the component. + */ + + u32 buffer_size_recommended; /* Size of buffers the port + * recommends for optimal + * performance (RO). A value of + * zero means no special + * recommendation. This is set + * by the component. + */ + + u32 buffer_num; /* Actual number of buffers the port will use. + * This is set by the client. + */ + + u32 buffer_size; /* Actual maximum size of the buffers that + * will be sent to the port. This is set by + * the client. + */ + + void *component; /* Component this port belongs to (Read Only) */ + + void *userdata; /* Field reserved for use by the client */ + + u32 capabilities; /* Flags describing the capabilities of a + * port (RO). Bitwise combination of \ref + * portcapabilities "Port capabilities" + * values. + */ + +}; diff --git a/drivers/media/platform/bcm2835/mmal-msg.h b/drivers/media/platform/bcm2835/mmal-msg.h new file mode 100644 index 0000000..67b1076 --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-msg.h @@ -0,0 +1,404 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + */ + +/* all the data structures which serialise the MMAL protocol. note + * these are directly mapped onto the recived message data. + * + * BEWARE: They seem to *assume* pointers are u32 and that there is no + * structure padding! + * + * NOTE: this implementation uses kernel types to ensure sizes. Rather + * than assigning values to enums to force their size the + * implementation uses fixed size types and not the enums (though the + * comments have the actual enum type + */ + +#define VC_MMAL_VER 15 +#define VC_MMAL_MIN_VER 10 +#define VC_MMAL_SERVER_NAME MAKE_FOURCC("mmal") + +/* max total message size is 512 bytes */ +#define MMAL_MSG_MAX_SIZE 512 +/* with six 32bit header elements max payload is therefore 488 bytes */ +#define MMAL_MSG_MAX_PAYLOAD 488 + +#include "mmal-msg-common.h" +#include "mmal-msg-format.h" +#include "mmal-msg-port.h" + +enum mmal_msg_type { + MMAL_MSG_TYPE_QUIT = 1, + MMAL_MSG_TYPE_SERVICE_CLOSED, + MMAL_MSG_TYPE_GET_VERSION, + MMAL_MSG_TYPE_COMPONENT_CREATE, + MMAL_MSG_TYPE_COMPONENT_DESTROY, /* 5 */ + MMAL_MSG_TYPE_COMPONENT_ENABLE, + MMAL_MSG_TYPE_COMPONENT_DISABLE, + MMAL_MSG_TYPE_PORT_INFO_GET, + MMAL_MSG_TYPE_PORT_INFO_SET, + MMAL_MSG_TYPE_PORT_ACTION, /* 10 */ + MMAL_MSG_TYPE_BUFFER_FROM_HOST, + MMAL_MSG_TYPE_BUFFER_TO_HOST, + MMAL_MSG_TYPE_GET_STATS, + MMAL_MSG_TYPE_PORT_PARAMETER_SET, + MMAL_MSG_TYPE_PORT_PARAMETER_GET, /* 15 */ + MMAL_MSG_TYPE_EVENT_TO_HOST, + MMAL_MSG_TYPE_GET_CORE_STATS_FOR_PORT, + MMAL_MSG_TYPE_OPAQUE_ALLOCATOR, + MMAL_MSG_TYPE_CONSUME_MEM, + MMAL_MSG_TYPE_LMK, /* 20 */ + MMAL_MSG_TYPE_OPAQUE_ALLOCATOR_DESC, + MMAL_MSG_TYPE_DRM_GET_LHS32, + MMAL_MSG_TYPE_DRM_GET_TIME, + MMAL_MSG_TYPE_BUFFER_FROM_HOST_ZEROLEN, + MMAL_MSG_TYPE_PORT_FLUSH, /* 25 */ + MMAL_MSG_TYPE_HOST_LOG, + MMAL_MSG_TYPE_MSG_LAST +}; + +/* port action request messages differ depending on the action type */ +enum mmal_msg_port_action_type { + MMAL_MSG_PORT_ACTION_TYPE_UNKNOWN = 0, /* Unkown action */ + MMAL_MSG_PORT_ACTION_TYPE_ENABLE, /* Enable a port */ + MMAL_MSG_PORT_ACTION_TYPE_DISABLE, /* Disable a port */ + MMAL_MSG_PORT_ACTION_TYPE_FLUSH, /* Flush a port */ + MMAL_MSG_PORT_ACTION_TYPE_CONNECT, /* Connect ports */ + MMAL_MSG_PORT_ACTION_TYPE_DISCONNECT, /* Disconnect ports */ + MMAL_MSG_PORT_ACTION_TYPE_SET_REQUIREMENTS, /* Set buffer requirements*/ +}; + +struct mmal_msg_header { + u32 magic; + u32 type; /** enum mmal_msg_type */ + + /* Opaque handle to the control service */ + struct mmal_control_service *control_service; + + struct mmal_msg_context *context; /** a u32 per message context */ + u32 status; /** The status of the vchiq operation */ + u32 padding; +}; + +/* Send from VC to host to report version */ +struct mmal_msg_version { + u32 flags; + u32 major; + u32 minor; + u32 minimum; +}; + +/* request to VC to create component */ +struct mmal_msg_component_create { + void *client_component; /* component context */ + char name[128]; + u32 pid; /* For debug */ +}; + +/* reply from VC to component creation request */ +struct mmal_msg_component_create_reply { + u32 status; /** enum mmal_msg_status - how does this differ to + * the one in the header? + */ + u32 component_handle; /* VideoCore handle for component */ + u32 input_num; /* Number of input ports */ + u32 output_num; /* Number of output ports */ + u32 clock_num; /* Number of clock ports */ +}; + +/* request to VC to destroy a component */ +struct mmal_msg_component_destroy { + u32 component_handle; +}; + +struct mmal_msg_component_destroy_reply { + u32 status; /** The component destruction status */ +}; + + +/* request and reply to VC to enable a component */ +struct mmal_msg_component_enable { + u32 component_handle; +}; + +struct mmal_msg_component_enable_reply { + u32 status; /** The component enable status */ +}; + + +/* request and reply to VC to disable a component */ +struct mmal_msg_component_disable { + u32 component_handle; +}; + +struct mmal_msg_component_disable_reply { + u32 status; /** The component disable status */ +}; + +/* request to VC to get port information */ +struct mmal_msg_port_info_get { + u32 component_handle; /* component handle port is associated with */ + u32 port_type; /* enum mmal_msg_port_type */ + u32 index; /* port index to query */ +}; + +/* reply from VC to get port info request */ +struct mmal_msg_port_info_get_reply { + u32 status; /** enum mmal_msg_status */ + u32 component_handle; /* component handle port is associated with */ + u32 port_type; /* enum mmal_msg_port_type */ + u32 port_index; /* port indexed in query */ + s32 found; /* unused */ + u32 port_handle; /**< Handle to use for this port */ + struct mmal_port port; + struct mmal_es_format format; /* elementry stream format */ + union mmal_es_specific_format es; /* es type specific data */ + u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE]; /* es extra data */ +}; + +/* request to VC to set port information */ +struct mmal_msg_port_info_set { + u32 component_handle; + u32 port_type; /* enum mmal_msg_port_type */ + u32 port_index; /* port indexed in query */ + struct mmal_port port; + struct mmal_es_format format; + union mmal_es_specific_format es; + u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE]; +}; + +/* reply from VC to port info set request */ +struct mmal_msg_port_info_set_reply { + u32 status; + u32 component_handle; /* component handle port is associated with */ + u32 port_type; /* enum mmal_msg_port_type */ + u32 index; /* port indexed in query */ + s32 found; /* unused */ + u32 port_handle; /**< Handle to use for this port */ + struct mmal_port port; + struct mmal_es_format format; + union mmal_es_specific_format es; + u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE]; +}; + + +/* port action requests that take a mmal_port as a parameter */ +struct mmal_msg_port_action_port { + u32 component_handle; + u32 port_handle; + u32 action; /* enum mmal_msg_port_action_type */ + struct mmal_port port; +}; + +/* port action requests that take handles as a parameter */ +struct mmal_msg_port_action_handle { + u32 component_handle; + u32 port_handle; + u32 action; /* enum mmal_msg_port_action_type */ + u32 connect_component_handle; + u32 connect_port_handle; +}; + +struct mmal_msg_port_action_reply { + u32 status; /** The port action operation status */ +}; + + + + +/* MMAL buffer transfer */ + +/** Size of space reserved in a buffer message for short messages. */ +#define MMAL_VC_SHORT_DATA 128 + +/** Signals that the current payload is the end of the stream of data */ +#define MMAL_BUFFER_HEADER_FLAG_EOS (1<<0) +/** Signals that the start of the current payload starts a frame */ +#define MMAL_BUFFER_HEADER_FLAG_FRAME_START (1<<1) +/** Signals that the end of the current payload ends a frame */ +#define MMAL_BUFFER_HEADER_FLAG_FRAME_END (1<<2) +/** Signals that the current payload contains only complete frames (>1) */ +#define MMAL_BUFFER_HEADER_FLAG_FRAME \ + (MMAL_BUFFER_HEADER_FLAG_FRAME_START|MMAL_BUFFER_HEADER_FLAG_FRAME_END) +/** Signals that the current payload is a keyframe (i.e. self decodable) */ +#define MMAL_BUFFER_HEADER_FLAG_KEYFRAME (1<<3) +/** Signals a discontinuity in the stream of data (e.g. after a seek). + * Can be used for instance by a decoder to reset its state */ +#define MMAL_BUFFER_HEADER_FLAG_DISCONTINUITY (1<<4) +/** Signals a buffer containing some kind of config data for the component + * (e.g. codec config data) */ +#define MMAL_BUFFER_HEADER_FLAG_CONFIG (1<<5) +/** Signals an encrypted payload */ +#define MMAL_BUFFER_HEADER_FLAG_ENCRYPTED (1<<6) +/** Signals a buffer containing side information */ +#define MMAL_BUFFER_HEADER_FLAG_CODECSIDEINFO (1<<7) +/** Signals a buffer which is the snapshot/postview image from a stills + * capture + */ +#define MMAL_BUFFER_HEADER_FLAGS_SNAPSHOT (1<<8) +/** Signals a buffer which contains data known to be corrupted */ +#define MMAL_BUFFER_HEADER_FLAG_CORRUPTED (1<<9) +/** Signals that a buffer failed to be transmitted */ +#define MMAL_BUFFER_HEADER_FLAG_TRANSMISSION_FAILED (1<<10) + +struct mmal_driver_buffer { + u32 magic; + u32 component_handle; + u32 port_handle; + void *client_context; +}; + +/* buffer header */ +struct mmal_buffer_header { + struct mmal_buffer_header *next; /* next header */ + void *priv; /* framework private data */ + u32 cmd; + void *data; + u32 alloc_size; + u32 length; + u32 offset; + u32 flags; + s64 pts; + s64 dts; + void *type; + void *user_data; +}; + +struct mmal_buffer_header_type_specific { + union { + struct { + u32 planes; + u32 offset[4]; + u32 pitch[4]; + u32 flags; + } video; + } u; +}; + +struct mmal_msg_buffer_from_host { + /* The front 32 bytes of the buffer header are copied + * back to us in the reply to allow for context. This + * area is used to store two mmal_driver_buffer structures to + * allow for multiple concurrent service users. + */ + /* control data */ + struct mmal_driver_buffer drvbuf; + + /* referenced control data for passthrough buffer management */ + struct mmal_driver_buffer drvbuf_ref; + struct mmal_buffer_header buffer_header; /* buffer header itself */ + struct mmal_buffer_header_type_specific buffer_header_type_specific; + s32 is_zero_copy; + s32 has_reference; + + /** allows short data to be xfered in control message */ + u32 payload_in_message; + u8 short_data[MMAL_VC_SHORT_DATA]; +}; + + +/* port parameter setting */ + +#define MMAL_WORKER_PORT_PARAMETER_SPACE 96 + +struct mmal_msg_port_parameter_set { + u32 component_handle; /* component */ + u32 port_handle; /* port */ + u32 id; /* Parameter ID */ + u32 size; /* Parameter size */ + uint32_t value[MMAL_WORKER_PORT_PARAMETER_SPACE]; +}; + +struct mmal_msg_port_parameter_set_reply { + u32 status; /** enum mmal_msg_status todo: how does this + * differ to the one in the header? + */ +}; + +/* port parameter getting */ + +struct mmal_msg_port_parameter_get { + u32 component_handle; /* component */ + u32 port_handle; /* port */ + u32 id; /* Parameter ID */ + u32 size; /* Parameter size */ +}; + +struct mmal_msg_port_parameter_get_reply { + u32 status; /* Status of mmal_port_parameter_get call */ + u32 id; /* Parameter ID */ + u32 size; /* Parameter size */ + uint32_t value[MMAL_WORKER_PORT_PARAMETER_SPACE]; +}; + +/* event messages */ +#define MMAL_WORKER_EVENT_SPACE 256 + +struct mmal_msg_event_to_host { + void *client_component; /* component context */ + + u32 port_type; + u32 port_num; + + u32 cmd; + u32 length; + u8 data[MMAL_WORKER_EVENT_SPACE]; + struct mmal_buffer_header *delayed_buffer; +}; + +/* all mmal messages are serialised through this structure */ +struct mmal_msg { + /* header */ + struct mmal_msg_header h; + /* payload */ + union { + struct mmal_msg_version version; + + struct mmal_msg_component_create component_create; + struct mmal_msg_component_create_reply component_create_reply; + + struct mmal_msg_component_destroy component_destroy; + struct mmal_msg_component_destroy_reply component_destroy_reply; + + struct mmal_msg_component_enable component_enable; + struct mmal_msg_component_enable_reply component_enable_reply; + + struct mmal_msg_component_disable component_disable; + struct mmal_msg_component_disable_reply component_disable_reply; + + struct mmal_msg_port_info_get port_info_get; + struct mmal_msg_port_info_get_reply port_info_get_reply; + + struct mmal_msg_port_info_set port_info_set; + struct mmal_msg_port_info_set_reply port_info_set_reply; + + struct mmal_msg_port_action_port port_action_port; + struct mmal_msg_port_action_handle port_action_handle; + struct mmal_msg_port_action_reply port_action_reply; + + struct mmal_msg_buffer_from_host buffer_from_host; + + struct mmal_msg_port_parameter_set port_parameter_set; + struct mmal_msg_port_parameter_set_reply + port_parameter_set_reply; + struct mmal_msg_port_parameter_get + port_parameter_get; + struct mmal_msg_port_parameter_get_reply + port_parameter_get_reply; + + struct mmal_msg_event_to_host event_to_host; + + u8 payload[MMAL_MSG_MAX_PAYLOAD]; + } u; +}; diff --git a/drivers/media/platform/bcm2835/mmal-parameters.h b/drivers/media/platform/bcm2835/mmal-parameters.h new file mode 100644 index 0000000..c611b58 --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-parameters.h @@ -0,0 +1,539 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + */ + +/* common parameters */ + +/** @name Parameter groups + * Parameters are divided into groups, and then allocated sequentially within + * a group using an enum. + * @{ + */ + +/** Common parameter ID group, used with many types of component. */ +#define MMAL_PARAMETER_GROUP_COMMON (0<<16) +/** Camera-specific parameter ID group. */ +#define MMAL_PARAMETER_GROUP_CAMERA (1<<16) +/** Video-specific parameter ID group. */ +#define MMAL_PARAMETER_GROUP_VIDEO (2<<16) +/** Audio-specific parameter ID group. */ +#define MMAL_PARAMETER_GROUP_AUDIO (3<<16) +/** Clock-specific parameter ID group. */ +#define MMAL_PARAMETER_GROUP_CLOCK (4<<16) +/** Miracast-specific parameter ID group. */ +#define MMAL_PARAMETER_GROUP_MIRACAST (5<<16) + +/* Common parameters */ +enum mmal_parameter_common_type { + MMAL_PARAMETER_UNUSED /**< Never a valid parameter ID */ + = MMAL_PARAMETER_GROUP_COMMON, + MMAL_PARAMETER_SUPPORTED_ENCODINGS, /**< MMAL_PARAMETER_ENCODING_T */ + MMAL_PARAMETER_URI, /**< MMAL_PARAMETER_URI_T */ + + /** MMAL_PARAMETER_CHANGE_EVENT_REQUEST_T */ + MMAL_PARAMETER_CHANGE_EVENT_REQUEST, + + /** MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_ZERO_COPY, + + /**< MMAL_PARAMETER_BUFFER_REQUIREMENTS_T */ + MMAL_PARAMETER_BUFFER_REQUIREMENTS, + + MMAL_PARAMETER_STATISTICS, /**< MMAL_PARAMETER_STATISTICS_T */ + MMAL_PARAMETER_CORE_STATISTICS, /**< MMAL_PARAMETER_CORE_STATISTICS_T */ + MMAL_PARAMETER_MEM_USAGE, /**< MMAL_PARAMETER_MEM_USAGE_T */ + MMAL_PARAMETER_BUFFER_FLAG_FILTER, /**< MMAL_PARAMETER_UINT32_T */ + MMAL_PARAMETER_SEEK, /**< MMAL_PARAMETER_SEEK_T */ + MMAL_PARAMETER_POWERMON_ENABLE, /**< MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_LOGGING, /**< MMAL_PARAMETER_LOGGING_T */ + MMAL_PARAMETER_SYSTEM_TIME /**< MMAL_PARAMETER_UINT64_T */ +}; + +/* camera parameters */ + +enum mmal_parameter_camera_type { + /* 0 */ + /** @ref MMAL_PARAMETER_THUMBNAIL_CONFIG_T */ + MMAL_PARAMETER_THUMBNAIL_CONFIGURATION + = MMAL_PARAMETER_GROUP_CAMERA, + MMAL_PARAMETER_CAPTURE_QUALITY, /**< Unused? */ + MMAL_PARAMETER_ROTATION, /**< @ref MMAL_PARAMETER_INT32_T */ + MMAL_PARAMETER_EXIF_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_EXIF, /**< @ref MMAL_PARAMETER_EXIF_T */ + MMAL_PARAMETER_AWB_MODE, /**< @ref MMAL_PARAM_AWBMODE_T */ + MMAL_PARAMETER_IMAGE_EFFECT, /**< @ref MMAL_PARAMETER_IMAGEFX_T */ + MMAL_PARAMETER_COLOUR_EFFECT, /**< @ref MMAL_PARAMETER_COLOURFX_T */ + MMAL_PARAMETER_FLICKER_AVOID, /**< @ref MMAL_PARAMETER_FLICKERAVOID_T */ + MMAL_PARAMETER_FLASH, /**< @ref MMAL_PARAMETER_FLASH_T */ + MMAL_PARAMETER_REDEYE, /**< @ref MMAL_PARAMETER_REDEYE_T */ + MMAL_PARAMETER_FOCUS, /**< @ref MMAL_PARAMETER_FOCUS_T */ + MMAL_PARAMETER_FOCAL_LENGTHS, /**< Unused? */ + MMAL_PARAMETER_EXPOSURE_COMP, /**< @ref MMAL_PARAMETER_INT32_T */ + MMAL_PARAMETER_ZOOM, /**< @ref MMAL_PARAMETER_SCALEFACTOR_T */ + MMAL_PARAMETER_MIRROR, /**< @ref MMAL_PARAMETER_MIRROR_T */ + + /* 0x10 */ + MMAL_PARAMETER_CAMERA_NUM, /**< @ref MMAL_PARAMETER_UINT32_T */ + MMAL_PARAMETER_CAPTURE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_EXPOSURE_MODE, /**< @ref MMAL_PARAMETER_EXPOSUREMODE_T */ + MMAL_PARAMETER_EXP_METERING_MODE, /**< @ref MMAL_PARAMETER_EXPOSUREMETERINGMODE_T */ + MMAL_PARAMETER_FOCUS_STATUS, /**< @ref MMAL_PARAMETER_FOCUS_STATUS_T */ + MMAL_PARAMETER_CAMERA_CONFIG, /**< @ref MMAL_PARAMETER_CAMERA_CONFIG_T */ + MMAL_PARAMETER_CAPTURE_STATUS, /**< @ref MMAL_PARAMETER_CAPTURE_STATUS_T */ + MMAL_PARAMETER_FACE_TRACK, /**< @ref MMAL_PARAMETER_FACE_TRACK_T */ + MMAL_PARAMETER_DRAW_BOX_FACES_AND_FOCUS, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_JPEG_Q_FACTOR, /**< @ref MMAL_PARAMETER_UINT32_T */ + MMAL_PARAMETER_FRAME_RATE, /**< @ref MMAL_PARAMETER_FRAME_RATE_T */ + MMAL_PARAMETER_USE_STC, /**< @ref MMAL_PARAMETER_CAMERA_STC_MODE_T */ + MMAL_PARAMETER_CAMERA_INFO, /**< @ref MMAL_PARAMETER_CAMERA_INFO_T */ + MMAL_PARAMETER_VIDEO_STABILISATION, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_FACE_TRACK_RESULTS, /**< @ref MMAL_PARAMETER_FACE_TRACK_RESULTS_T */ + MMAL_PARAMETER_ENABLE_RAW_CAPTURE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + + /* 0x20 */ + MMAL_PARAMETER_DPF_FILE, /**< @ref MMAL_PARAMETER_URI_T */ + MMAL_PARAMETER_ENABLE_DPF_FILE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_DPF_FAIL_IS_FATAL, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_CAPTURE_MODE, /**< @ref MMAL_PARAMETER_CAPTUREMODE_T */ + MMAL_PARAMETER_FOCUS_REGIONS, /**< @ref MMAL_PARAMETER_FOCUS_REGIONS_T */ + MMAL_PARAMETER_INPUT_CROP, /**< @ref MMAL_PARAMETER_INPUT_CROP_T */ + MMAL_PARAMETER_SENSOR_INFORMATION, /**< @ref MMAL_PARAMETER_SENSOR_INFORMATION_T */ + MMAL_PARAMETER_FLASH_SELECT, /**< @ref MMAL_PARAMETER_FLASH_SELECT_T */ + MMAL_PARAMETER_FIELD_OF_VIEW, /**< @ref MMAL_PARAMETER_FIELD_OF_VIEW_T */ + MMAL_PARAMETER_HIGH_DYNAMIC_RANGE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_DYNAMIC_RANGE_COMPRESSION, /**< @ref MMAL_PARAMETER_DRC_T */ + MMAL_PARAMETER_ALGORITHM_CONTROL, /**< @ref MMAL_PARAMETER_ALGORITHM_CONTROL_T */ + MMAL_PARAMETER_SHARPNESS, /**< @ref MMAL_PARAMETER_RATIONAL_T */ + MMAL_PARAMETER_CONTRAST, /**< @ref MMAL_PARAMETER_RATIONAL_T */ + MMAL_PARAMETER_BRIGHTNESS, /**< @ref MMAL_PARAMETER_RATIONAL_T */ + MMAL_PARAMETER_SATURATION, /**< @ref MMAL_PARAMETER_RATIONAL_T */ + + /* 0x30 */ + MMAL_PARAMETER_ISO, /**< @ref MMAL_PARAMETER_UINT32_T */ + MMAL_PARAMETER_ANTISHAKE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + + /** @ref MMAL_PARAMETER_IMAGEFX_PARAMETERS_T */ + MMAL_PARAMETER_IMAGE_EFFECT_PARAMETERS, + + /** @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_CAMERA_BURST_CAPTURE, + + /** @ref MMAL_PARAMETER_UINT32_T */ + MMAL_PARAMETER_CAMERA_MIN_ISO, + + /** @ref MMAL_PARAMETER_CAMERA_USE_CASE_T */ + MMAL_PARAMETER_CAMERA_USE_CASE, + + /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_CAPTURE_STATS_PASS, + + /** @ref MMAL_PARAMETER_UINT32_T */ + MMAL_PARAMETER_CAMERA_CUSTOM_SENSOR_CONFIG, + + /** @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_ENABLE_REGISTER_FILE, + + /** @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_REGISTER_FAIL_IS_FATAL, + + /** @ref MMAL_PARAMETER_CONFIGFILE_T */ + MMAL_PARAMETER_CONFIGFILE_REGISTERS, + + /** @ref MMAL_PARAMETER_CONFIGFILE_CHUNK_T */ + MMAL_PARAMETER_CONFIGFILE_CHUNK_REGISTERS, + MMAL_PARAMETER_JPEG_ATTACH_LOG, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_ZERO_SHUTTER_LAG, /**< @ref MMAL_PARAMETER_ZEROSHUTTERLAG_T */ + MMAL_PARAMETER_FPS_RANGE, /**< @ref MMAL_PARAMETER_FPS_RANGE_T */ + MMAL_PARAMETER_CAPTURE_EXPOSURE_COMP, /**< @ref MMAL_PARAMETER_INT32_T */ + + /* 0x40 */ + MMAL_PARAMETER_SW_SHARPEN_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_FLASH_REQUIRED, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_SW_SATURATION_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ +}; + +enum mmal_parameter_camera_config_timestamp_mode { + MMAL_PARAM_TIMESTAMP_MODE_ZERO = 0, /* Always timestamp frames as 0 */ + MMAL_PARAM_TIMESTAMP_MODE_RAW_STC, /* Use the raw STC value + * for the frame timestamp + */ + MMAL_PARAM_TIMESTAMP_MODE_RESET_STC, /* Use the STC timestamp + * but subtract the + * timestamp of the first + * frame sent to give a + * zero based timestamp. + */ +}; + +/* camera configuration parameter */ +struct mmal_parameter_camera_config { + /* Parameters for setting up the image pools */ + u32 max_stills_w; /* Max size of stills capture */ + u32 max_stills_h; + u32 stills_yuv422; /* Allow YUV422 stills capture */ + u32 one_shot_stills; /* Continuous or one shot stills captures. */ + + u32 max_preview_video_w; /* Max size of the preview or video + * capture frames + */ + u32 max_preview_video_h; + u32 num_preview_video_frames; + + /** Sets the height of the circular buffer for stills capture. */ + u32 stills_capture_circular_buffer_height; + + /** Allows preview/encode to resume as fast as possible after the stills + * input frame has been received, and then processes the still frame in + * the background whilst preview/encode has resumed. + * Actual mode is controlled by MMAL_PARAMETER_CAPTURE_MODE. + */ + u32 fast_preview_resume; + + /** Selects algorithm for timestamping frames if + * there is no clock component connected. + * enum mmal_parameter_camera_config_timestamp_mode + */ + s32 use_stc_timestamp; +}; + + +enum mmal_parameter_exposuremode { + MMAL_PARAM_EXPOSUREMODE_OFF, + MMAL_PARAM_EXPOSUREMODE_AUTO, + MMAL_PARAM_EXPOSUREMODE_NIGHT, + MMAL_PARAM_EXPOSUREMODE_NIGHTPREVIEW, + MMAL_PARAM_EXPOSUREMODE_BACKLIGHT, + MMAL_PARAM_EXPOSUREMODE_SPOTLIGHT, + MMAL_PARAM_EXPOSUREMODE_SPORTS, + MMAL_PARAM_EXPOSUREMODE_SNOW, + MMAL_PARAM_EXPOSUREMODE_BEACH, + MMAL_PARAM_EXPOSUREMODE_VERYLONG, + MMAL_PARAM_EXPOSUREMODE_FIXEDFPS, + MMAL_PARAM_EXPOSUREMODE_ANTISHAKE, + MMAL_PARAM_EXPOSUREMODE_FIREWORKS, +}; + +enum mmal_parameter_exposuremeteringmode { + MMAL_PARAM_EXPOSUREMETERINGMODE_AVERAGE, + MMAL_PARAM_EXPOSUREMETERINGMODE_SPOT, + MMAL_PARAM_EXPOSUREMETERINGMODE_BACKLIT, + MMAL_PARAM_EXPOSUREMETERINGMODE_MATRIX, +}; + +enum mmal_parameter_awbmode { + MMAL_PARAM_AWBMODE_OFF, + MMAL_PARAM_AWBMODE_AUTO, + MMAL_PARAM_AWBMODE_SUNLIGHT, + MMAL_PARAM_AWBMODE_CLOUDY, + MMAL_PARAM_AWBMODE_SHADE, + MMAL_PARAM_AWBMODE_TUNGSTEN, + MMAL_PARAM_AWBMODE_FLUORESCENT, + MMAL_PARAM_AWBMODE_INCANDESCENT, + MMAL_PARAM_AWBMODE_FLASH, + MMAL_PARAM_AWBMODE_HORIZON, +}; + +enum mmal_parameter_imagefx { + MMAL_PARAM_IMAGEFX_NONE, + MMAL_PARAM_IMAGEFX_NEGATIVE, + MMAL_PARAM_IMAGEFX_SOLARIZE, + MMAL_PARAM_IMAGEFX_POSTERIZE, + MMAL_PARAM_IMAGEFX_WHITEBOARD, + MMAL_PARAM_IMAGEFX_BLACKBOARD, + MMAL_PARAM_IMAGEFX_SKETCH, + MMAL_PARAM_IMAGEFX_DENOISE, + MMAL_PARAM_IMAGEFX_EMBOSS, + MMAL_PARAM_IMAGEFX_OILPAINT, + MMAL_PARAM_IMAGEFX_HATCH, + MMAL_PARAM_IMAGEFX_GPEN, + MMAL_PARAM_IMAGEFX_PASTEL, + MMAL_PARAM_IMAGEFX_WATERCOLOUR, + MMAL_PARAM_IMAGEFX_FILM, + MMAL_PARAM_IMAGEFX_BLUR, + MMAL_PARAM_IMAGEFX_SATURATION, + MMAL_PARAM_IMAGEFX_COLOURSWAP, + MMAL_PARAM_IMAGEFX_WASHEDOUT, + MMAL_PARAM_IMAGEFX_POSTERISE, + MMAL_PARAM_IMAGEFX_COLOURPOINT, + MMAL_PARAM_IMAGEFX_COLOURBALANCE, + MMAL_PARAM_IMAGEFX_CARTOON, +}; + +/** Manner of video rate control */ +enum mmal_parameter_rate_control_mode { + MMAL_VIDEO_RATECONTROL_DEFAULT, + MMAL_VIDEO_RATECONTROL_VARIABLE, + MMAL_VIDEO_RATECONTROL_CONSTANT, + MMAL_VIDEO_RATECONTROL_VARIABLE_SKIP_FRAMES, + MMAL_VIDEO_RATECONTROL_CONSTANT_SKIP_FRAMES +}; + +/* video parameters */ + +enum mmal_parameter_video_type { + /** @ref MMAL_DISPLAYREGION_T */ + MMAL_PARAMETER_DISPLAYREGION = MMAL_PARAMETER_GROUP_VIDEO, + + /** @ref MMAL_PARAMETER_VIDEO_PROFILE_T */ + MMAL_PARAMETER_SUPPORTED_PROFILES, + + /** @ref MMAL_PARAMETER_VIDEO_PROFILE_T */ + MMAL_PARAMETER_PROFILE, + + /** @ref MMAL_PARAMETER_UINT32_T */ + MMAL_PARAMETER_INTRAPERIOD, + + /** @ref MMAL_PARAMETER_VIDEO_RATECONTROL_T */ + MMAL_PARAMETER_RATECONTROL, + + /** @ref MMAL_PARAMETER_VIDEO_NALUNITFORMAT_T */ + MMAL_PARAMETER_NALUNITFORMAT, + + /** @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_MINIMISE_FRAGMENTATION, + + /** @ref MMAL_PARAMETER_UINT32_T. + * Setting the value to zero resets to the default (one slice per frame). + */ + MMAL_PARAMETER_MB_ROWS_PER_SLICE, + + /** @ref MMAL_PARAMETER_VIDEO_LEVEL_EXTENSION_T */ + MMAL_PARAMETER_VIDEO_LEVEL_EXTENSION, + + /** @ref MMAL_PARAMETER_VIDEO_EEDE_ENABLE_T */ + MMAL_PARAMETER_VIDEO_EEDE_ENABLE, + + /** @ref MMAL_PARAMETER_VIDEO_EEDE_LOSSRATE_T */ + MMAL_PARAMETER_VIDEO_EEDE_LOSSRATE, + + /** @ref MMAL_PARAMETER_BOOLEAN_T. Request an I-frame. */ + MMAL_PARAMETER_VIDEO_REQUEST_I_FRAME, + /** @ref MMAL_PARAMETER_VIDEO_INTRA_REFRESH_T */ + MMAL_PARAMETER_VIDEO_INTRA_REFRESH, + + /** @ref MMAL_PARAMETER_BOOLEAN_T. */ + MMAL_PARAMETER_VIDEO_IMMUTABLE_INPUT, + + /** @ref MMAL_PARAMETER_UINT32_T. Run-time bit rate control */ + MMAL_PARAMETER_VIDEO_BIT_RATE, + + /** @ref MMAL_PARAMETER_FRAME_RATE_T */ + MMAL_PARAMETER_VIDEO_FRAME_RATE, + + /** @ref MMAL_PARAMETER_UINT32_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_MIN_QUANT, + + /** @ref MMAL_PARAMETER_UINT32_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_MAX_QUANT, + + /** @ref MMAL_PARAMETER_VIDEO_ENCODE_RC_MODEL_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_RC_MODEL, + + MMAL_PARAMETER_EXTRA_BUFFERS, /**< @ref MMAL_PARAMETER_UINT32_T. */ + /** @ref MMAL_PARAMETER_UINT32_T. + * Changing this parameter from the default can reduce frame rate + * because image buffers need to be re-pitched. + */ + MMAL_PARAMETER_VIDEO_ALIGN_HORIZ, + + /** @ref MMAL_PARAMETER_UINT32_T. + * Changing this parameter from the default can reduce frame rate + * because image buffers need to be re-pitched. + */ + MMAL_PARAMETER_VIDEO_ALIGN_VERT, + + /** @ref MMAL_PARAMETER_BOOLEAN_T. */ + MMAL_PARAMETER_VIDEO_DROPPABLE_PFRAMES, + + /** @ref MMAL_PARAMETER_UINT32_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_INITIAL_QUANT, + + /**< @ref MMAL_PARAMETER_UINT32_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_QP_P, + + /**< @ref MMAL_PARAMETER_UINT32_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_RC_SLICE_DQUANT, + + /** @ref MMAL_PARAMETER_UINT32_T */ + MMAL_PARAMETER_VIDEO_ENCODE_FRAME_LIMIT_BITS, + + /** @ref MMAL_PARAMETER_UINT32_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_PEAK_RATE, + + /* H264 specific parameters */ + + /** @ref MMAL_PARAMETER_BOOLEAN_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_H264_DISABLE_CABAC, + + /** @ref MMAL_PARAMETER_BOOLEAN_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_H264_LOW_LATENCY, + + /** @ref MMAL_PARAMETER_BOOLEAN_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_H264_AU_DELIMITERS, + + /** @ref MMAL_PARAMETER_UINT32_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_H264_DEBLOCK_IDC, + + /** @ref MMAL_PARAMETER_VIDEO_ENCODER_H264_MB_INTRA_MODES_T. */ + MMAL_PARAMETER_VIDEO_ENCODE_H264_MB_INTRA_MODE, + + /** @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_VIDEO_ENCODE_HEADER_ON_OPEN, + + /** @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_VIDEO_ENCODE_PRECODE_FOR_QP, + + /** @ref MMAL_PARAMETER_VIDEO_DRM_INIT_INFO_T. */ + MMAL_PARAMETER_VIDEO_DRM_INIT_INFO, + + /** @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_VIDEO_TIMESTAMP_FIFO, + + /** @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_VIDEO_DECODE_ERROR_CONCEALMENT, + + /** @ref MMAL_PARAMETER_VIDEO_DRM_PROTECT_BUFFER_T. */ + MMAL_PARAMETER_VIDEO_DRM_PROTECT_BUFFER, + + /** @ref MMAL_PARAMETER_BYTES_T */ + MMAL_PARAMETER_VIDEO_DECODE_CONFIG_VD3 +}; + +/** Valid mirror modes */ +enum mmal_parameter_mirror { + MMAL_PARAM_MIRROR_NONE, + MMAL_PARAM_MIRROR_VERTICAL, + MMAL_PARAM_MIRROR_HORIZONTAL, + MMAL_PARAM_MIRROR_BOTH, +}; + +enum mmal_parameter_displaytransform { + MMAL_DISPLAY_ROT0 = 0, + MMAL_DISPLAY_MIRROR_ROT0 = 1, + MMAL_DISPLAY_MIRROR_ROT180 = 2, + MMAL_DISPLAY_ROT180 = 3, + MMAL_DISPLAY_MIRROR_ROT90 = 4, + MMAL_DISPLAY_ROT270 = 5, + MMAL_DISPLAY_ROT90 = 6, + MMAL_DISPLAY_MIRROR_ROT270 = 7, +}; + +enum mmal_parameter_displaymode { + MMAL_DISPLAY_MODE_FILL = 0, + MMAL_DISPLAY_MODE_LETTERBOX = 1, +}; + +enum mmal_parameter_displayset { + MMAL_DISPLAY_SET_NONE = 0, + MMAL_DISPLAY_SET_NUM = 1, + MMAL_DISPLAY_SET_FULLSCREEN = 2, + MMAL_DISPLAY_SET_TRANSFORM = 4, + MMAL_DISPLAY_SET_DEST_RECT = 8, + MMAL_DISPLAY_SET_SRC_RECT = 0x10, + MMAL_DISPLAY_SET_MODE = 0x20, + MMAL_DISPLAY_SET_PIXEL = 0x40, + MMAL_DISPLAY_SET_NOASPECT = 0x80, + MMAL_DISPLAY_SET_LAYER = 0x100, + MMAL_DISPLAY_SET_COPYPROTECT = 0x200, + MMAL_DISPLAY_SET_ALPHA = 0x400, +}; + +struct mmal_parameter_displayregion { + /** Bitfield that indicates which fields are set and should be + * used. All other fields will maintain their current value. + * \ref MMAL_DISPLAYSET_T defines the bits that can be + * combined. + */ + u32 set; + + /** Describes the display output device, with 0 typically + * being a directly connected LCD display. The actual values + * will depend on the hardware. Code using hard-wired numbers + * (e.g. 2) is certain to fail. + */ + + u32 display_num; + /** Indicates that we are using the full device screen area, + * rather than a window of the display. If zero, then + * dest_rect is used to specify a region of the display to + * use. + */ + + s32 fullscreen; + /** Indicates any rotation or flipping used to map frames onto + * the natural display orientation. + */ + u32 transform; /* enum mmal_parameter_displaytransform */ + + /** Where to display the frame within the screen, if + * fullscreen is zero. + */ + struct vchiq_mmal_rect dest_rect; + + /** Indicates which area of the frame to display. If all + * values are zero, the whole frame will be used. + */ + struct vchiq_mmal_rect src_rect; + + /** If set to non-zero, indicates that any display scaling + * should disregard the aspect ratio of the frame region being + * displayed. + */ + s32 noaspect; + + /** Indicates how the image should be scaled to fit the + * display. \code MMAL_DISPLAY_MODE_FILL \endcode indicates + * that the image should fill the screen by potentially + * cropping the frames. Setting \code mode \endcode to \code + * MMAL_DISPLAY_MODE_LETTERBOX \endcode indicates that all the + * source region should be displayed and black bars added if + * necessary. + */ + u32 mode; /* enum mmal_parameter_displaymode */ + + /** If non-zero, defines the width of a source pixel relative + * to \code pixel_y \endcode. If zero, then pixels default to + * being square. + */ + u32 pixel_x; + + /** If non-zero, defines the height of a source pixel relative + * to \code pixel_x \endcode. If zero, then pixels default to + * being square. + */ + u32 pixel_y; + + /** Sets the relative depth of the images, with greater values + * being in front of smaller values. + */ + u32 layer; + + /** Set to non-zero to ensure copy protection is used on + * output. + */ + s32 copyprotect_required; + + /** Level of opacity of the layer, where zero is fully + * transparent and 255 is fully opaque. + */ + u32 alpha; +}; + +#define MMAL_MAX_IMAGEFX_PARAMETERS 5 + +struct mmal_parameter_imagefx_parameters { + enum mmal_parameter_imagefx effect; + u32 num_effect_params; + u32 effect_parameter[MMAL_MAX_IMAGEFX_PARAMETERS]; +}; diff --git a/drivers/media/platform/bcm2835/mmal-vchiq.c b/drivers/media/platform/bcm2835/mmal-vchiq.c new file mode 100644 index 0000000..a06fb44 --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-vchiq.c @@ -0,0 +1,1916 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + * + * V4L2 driver MMAL vchiq interface code + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "mmal-common.h" +#include "mmal-vchiq.h" +#include "mmal-msg.h" + +#define USE_VCHIQ_ARM +#include "interface/vchi/vchi.h" + +/* maximum number of components supported */ +#define VCHIQ_MMAL_MAX_COMPONENTS 4 + +/*#define FULL_MSG_DUMP 1*/ + +#ifdef DEBUG +static const char *const msg_type_names[] = { + "UNKNOWN", + "QUIT", + "SERVICE_CLOSED", + "GET_VERSION", + "COMPONENT_CREATE", + "COMPONENT_DESTROY", + "COMPONENT_ENABLE", + "COMPONENT_DISABLE", + "PORT_INFO_GET", + "PORT_INFO_SET", + "PORT_ACTION", + "BUFFER_FROM_HOST", + "BUFFER_TO_HOST", + "GET_STATS", + "PORT_PARAMETER_SET", + "PORT_PARAMETER_GET", + "EVENT_TO_HOST", + "GET_CORE_STATS_FOR_PORT", + "OPAQUE_ALLOCATOR", + "CONSUME_MEM", + "LMK", + "OPAQUE_ALLOCATOR_DESC", + "DRM_GET_LHS32", + "DRM_GET_TIME", + "BUFFER_FROM_HOST_ZEROLEN", + "PORT_FLUSH", + "HOST_LOG", +}; +#endif + +static const char *const port_action_type_names[] = { + "UNKNOWN", + "ENABLE", + "DISABLE", + "FLUSH", + "CONNECT", + "DISCONNECT", + "SET_REQUIREMENTS", +}; + +#if defined(DEBUG) +#if defined(FULL_MSG_DUMP) +#define DBG_DUMP_MSG(MSG, MSG_LEN, TITLE) \ + do { \ + pr_debug(TITLE" type:%s(%d) length:%d\n", \ + msg_type_names[(MSG)->h.type], \ + (MSG)->h.type, (MSG_LEN)); \ + print_hex_dump(KERN_DEBUG, "<h.type], \ + (MSG)->h.type, (MSG_LEN)); \ + } +#endif +#else +#define DBG_DUMP_MSG(MSG, MSG_LEN, TITLE) +#endif + +/* normal message context */ +struct mmal_msg_context { + union { + struct { + /* work struct for defered callback - must come first */ + struct work_struct work; + /* mmal instance */ + struct vchiq_mmal_instance *instance; + /* mmal port */ + struct vchiq_mmal_port *port; + /* actual buffer used to store bulk reply */ + struct mmal_buffer *buffer; + /* amount of buffer used */ + unsigned long buffer_used; + /* MMAL buffer flags */ + u32 mmal_flags; + /* Presentation and Decode timestamps */ + s64 pts; + s64 dts; + + int status; /* context status */ + + } bulk; /* bulk data */ + + struct { + /* message handle to release */ + VCHI_HELD_MSG_T msg_handle; + /* pointer to received message */ + struct mmal_msg *msg; + /* received message length */ + u32 msg_len; + /* completion upon reply */ + struct completion cmplt; + } sync; /* synchronous response */ + } u; + +}; + +struct vchiq_mmal_instance { + VCHI_SERVICE_HANDLE_T handle; + + /* ensure serialised access to service */ + struct mutex vchiq_mutex; + + /* ensure serialised access to bulk operations */ + struct mutex bulk_mutex; + + /* vmalloc page to receive scratch bulk xfers into */ + void *bulk_scratch; + + /* component to use next */ + int component_idx; + struct vchiq_mmal_component component[VCHIQ_MMAL_MAX_COMPONENTS]; +}; + +static struct mmal_msg_context *get_msg_context(struct vchiq_mmal_instance + *instance) +{ + struct mmal_msg_context *msg_context; + + /* todo: should this be allocated from a pool to avoid kmalloc */ + msg_context = kmalloc(sizeof(*msg_context), GFP_KERNEL); + memset(msg_context, 0, sizeof(*msg_context)); + + return msg_context; +} + +static void release_msg_context(struct mmal_msg_context *msg_context) +{ + kfree(msg_context); +} + +/* deals with receipt of event to host message */ +static void event_to_host_cb(struct vchiq_mmal_instance *instance, + struct mmal_msg *msg, u32 msg_len) +{ + pr_debug("unhandled event\n"); + pr_debug("component:%p port type:%d num:%d cmd:0x%x length:%d\n", + msg->u.event_to_host.client_component, + msg->u.event_to_host.port_type, + msg->u.event_to_host.port_num, + msg->u.event_to_host.cmd, msg->u.event_to_host.length); +} + +/* workqueue scheduled callback + * + * we do this because it is important we do not call any other vchiq + * sync calls from witin the message delivery thread + */ +static void buffer_work_cb(struct work_struct *work) +{ + struct mmal_msg_context *msg_context = (struct mmal_msg_context *)work; + + msg_context->u.bulk.port->buffer_cb(msg_context->u.bulk.instance, + msg_context->u.bulk.port, + msg_context->u.bulk.status, + msg_context->u.bulk.buffer, + msg_context->u.bulk.buffer_used, + msg_context->u.bulk.mmal_flags, + msg_context->u.bulk.dts, + msg_context->u.bulk.pts); + + /* release message context */ + release_msg_context(msg_context); +} + +/* enqueue a bulk receive for a given message context */ +static int bulk_receive(struct vchiq_mmal_instance *instance, + struct mmal_msg *msg, + struct mmal_msg_context *msg_context) +{ + unsigned long rd_len; + unsigned long flags = 0; + int ret; + + /* bulk mutex stops other bulk operations while we have a + * receive in progress - released in callback + */ + ret = mutex_lock_interruptible(&instance->bulk_mutex); + if (ret != 0) + return ret; + + rd_len = msg->u.buffer_from_host.buffer_header.length; + + /* take buffer from queue */ + spin_lock_irqsave(&msg_context->u.bulk.port->slock, flags); + if (list_empty(&msg_context->u.bulk.port->buffers)) { + spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags); + pr_err("buffer list empty trying to submit bulk receive\n"); + + /* todo: this is a serious error, we should never have + * commited a buffer_to_host operation to the mmal + * port without the buffer to back it up (underflow + * handling) and there is no obvious way to deal with + * this - how is the mmal servie going to react when + * we fail to do the xfer and reschedule a buffer when + * it arrives? perhaps a starved flag to indicate a + * waiting bulk receive? + */ + + mutex_unlock(&instance->bulk_mutex); + + return -EINVAL; + } + + msg_context->u.bulk.buffer = + list_entry(msg_context->u.bulk.port->buffers.next, + struct mmal_buffer, list); + list_del(&msg_context->u.bulk.buffer->list); + + spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags); + + /* ensure we do not overrun the available buffer */ + if (rd_len > msg_context->u.bulk.buffer->buffer_size) { + rd_len = msg_context->u.bulk.buffer->buffer_size; + pr_warn("short read as not enough receive buffer space\n"); + /* todo: is this the correct response, what happens to + * the rest of the message data? + */ + } + + /* store length */ + msg_context->u.bulk.buffer_used = rd_len; + msg_context->u.bulk.mmal_flags = + msg->u.buffer_from_host.buffer_header.flags; + msg_context->u.bulk.dts = msg->u.buffer_from_host.buffer_header.dts; + msg_context->u.bulk.pts = msg->u.buffer_from_host.buffer_header.pts; + + // only need to flush L1 cache here, as VCHIQ takes care of the L2 + // cache. + __cpuc_flush_dcache_area(msg_context->u.bulk.buffer->buffer, rd_len); + + /* queue the bulk submission */ + vchi_service_use(instance->handle); + ret = vchi_bulk_queue_receive(instance->handle, + msg_context->u.bulk.buffer->buffer, + /* Actual receive needs to be a multiple + * of 4 bytes + */ + (rd_len + 3) & ~3, + VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | + VCHI_FLAGS_BLOCK_UNTIL_QUEUED, + msg_context); + + vchi_service_release(instance->handle); + + if (ret != 0) { + /* callback will not be clearing the mutex */ + mutex_unlock(&instance->bulk_mutex); + } + + return ret; +} + +/* enque a dummy bulk receive for a given message context */ +static int dummy_bulk_receive(struct vchiq_mmal_instance *instance, + struct mmal_msg_context *msg_context) +{ + int ret; + + /* bulk mutex stops other bulk operations while we have a + * receive in progress - released in callback + */ + ret = mutex_lock_interruptible(&instance->bulk_mutex); + if (ret != 0) + return ret; + + /* zero length indicates this was a dummy transfer */ + msg_context->u.bulk.buffer_used = 0; + + /* queue the bulk submission */ + vchi_service_use(instance->handle); + + ret = vchi_bulk_queue_receive(instance->handle, + instance->bulk_scratch, + 8, + VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE | + VCHI_FLAGS_BLOCK_UNTIL_QUEUED, + msg_context); + + vchi_service_release(instance->handle); + + if (ret != 0) { + /* callback will not be clearing the mutex */ + mutex_unlock(&instance->bulk_mutex); + } + + return ret; +} + +/* data in message, memcpy from packet into output buffer */ +static int inline_receive(struct vchiq_mmal_instance *instance, + struct mmal_msg *msg, + struct mmal_msg_context *msg_context) +{ + unsigned long flags = 0; + + /* take buffer from queue */ + spin_lock_irqsave(&msg_context->u.bulk.port->slock, flags); + if (list_empty(&msg_context->u.bulk.port->buffers)) { + spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags); + pr_err("buffer list empty trying to receive inline\n"); + + /* todo: this is a serious error, we should never have + * commited a buffer_to_host operation to the mmal + * port without the buffer to back it up (with + * underflow handling) and there is no obvious way to + * deal with this. Less bad than the bulk case as we + * can just drop this on the floor but...unhelpful + */ + return -EINVAL; + } + + msg_context->u.bulk.buffer = + list_entry(msg_context->u.bulk.port->buffers.next, + struct mmal_buffer, list); + list_del(&msg_context->u.bulk.buffer->list); + + spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags); + + memcpy(msg_context->u.bulk.buffer->buffer, + msg->u.buffer_from_host.short_data, + msg->u.buffer_from_host.payload_in_message); + + msg_context->u.bulk.buffer_used = + msg->u.buffer_from_host.payload_in_message; + + return 0; +} + +/* queue the buffer availability with MMAL_MSG_TYPE_BUFFER_FROM_HOST */ +static int +buffer_from_host(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, struct mmal_buffer *buf) +{ + struct mmal_msg_context *msg_context; + struct mmal_msg m; + int ret; + + pr_debug("instance:%p buffer:%p\n", instance->handle, buf); + + /* bulk mutex stops other bulk operations while we + * have a receive in progress + */ + if (mutex_lock_interruptible(&instance->bulk_mutex)) + return -EINTR; + + /* get context */ + msg_context = get_msg_context(instance); + if (msg_context == NULL) + return -ENOMEM; + + /* store bulk message context for when data arrives */ + msg_context->u.bulk.instance = instance; + msg_context->u.bulk.port = port; + msg_context->u.bulk.buffer = NULL; /* not valid until bulk xfer */ + msg_context->u.bulk.buffer_used = 0; + + /* initialise work structure ready to schedule callback */ + INIT_WORK(&msg_context->u.bulk.work, buffer_work_cb); + + /* prep the buffer from host message */ + memset(&m, 0xbc, sizeof(m)); /* just to make debug clearer */ + + m.h.type = MMAL_MSG_TYPE_BUFFER_FROM_HOST; + m.h.magic = MMAL_MAGIC; + m.h.context = msg_context; + m.h.status = 0; + + /* drvbuf is our private data passed back */ + m.u.buffer_from_host.drvbuf.magic = MMAL_MAGIC; + m.u.buffer_from_host.drvbuf.component_handle = port->component->handle; + m.u.buffer_from_host.drvbuf.port_handle = port->handle; + m.u.buffer_from_host.drvbuf.client_context = msg_context; + + /* buffer header */ + m.u.buffer_from_host.buffer_header.cmd = 0; + m.u.buffer_from_host.buffer_header.data = buf->buffer; + m.u.buffer_from_host.buffer_header.alloc_size = buf->buffer_size; + m.u.buffer_from_host.buffer_header.length = 0; /* nothing used yet */ + m.u.buffer_from_host.buffer_header.offset = 0; /* no offset */ + m.u.buffer_from_host.buffer_header.flags = 0; /* no flags */ + m.u.buffer_from_host.buffer_header.pts = MMAL_TIME_UNKNOWN; + m.u.buffer_from_host.buffer_header.dts = MMAL_TIME_UNKNOWN; + + /* clear buffer type sepecific data */ + memset(&m.u.buffer_from_host.buffer_header_type_specific, 0, + sizeof(m.u.buffer_from_host.buffer_header_type_specific)); + + /* no payload in message */ + m.u.buffer_from_host.payload_in_message = 0; + + vchi_service_use(instance->handle); + + ret = vchi_msg_queue(instance->handle, &m, + sizeof(struct mmal_msg_header) + + sizeof(m.u.buffer_from_host), + VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); + + if (ret != 0) { + release_msg_context(msg_context); + /* todo: is this correct error value? */ + } + + vchi_service_release(instance->handle); + + mutex_unlock(&instance->bulk_mutex); + + return ret; +} + +/* submit a buffer to the mmal sevice + * + * the buffer_from_host uses size data from the ports next available + * mmal_buffer and deals with there being no buffer available by + * incrementing the underflow for later + */ +static int port_buffer_from_host(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port) +{ + int ret; + struct mmal_buffer *buf; + unsigned long flags = 0; + + if (!port->enabled) + return -EINVAL; + + /* peek buffer from queue */ + spin_lock_irqsave(&port->slock, flags); + if (list_empty(&port->buffers)) { + port->buffer_underflow++; + spin_unlock_irqrestore(&port->slock, flags); + return -ENOSPC; + } + + buf = list_entry(port->buffers.next, struct mmal_buffer, list); + + spin_unlock_irqrestore(&port->slock, flags); + + /* issue buffer to mmal service */ + ret = buffer_from_host(instance, port, buf); + if (ret) { + pr_err("adding buffer header failed\n"); + /* todo: how should this be dealt with */ + } + + return ret; +} + +/* deals with receipt of buffer to host message */ +static void buffer_to_host_cb(struct vchiq_mmal_instance *instance, + struct mmal_msg *msg, u32 msg_len) +{ + struct mmal_msg_context *msg_context; + + pr_debug("buffer_to_host_cb: instance:%p msg:%p msg_len:%d\n", + instance, msg, msg_len); + + if (msg->u.buffer_from_host.drvbuf.magic == MMAL_MAGIC) { + msg_context = msg->u.buffer_from_host.drvbuf.client_context; + } else { + pr_err("MMAL_MSG_TYPE_BUFFER_TO_HOST with bad magic\n"); + return; + } + + if (msg->h.status != MMAL_MSG_STATUS_SUCCESS) { + /* message reception had an error */ + pr_warn("error %d in reply\n", msg->h.status); + + msg_context->u.bulk.status = msg->h.status; + + } else if (msg->u.buffer_from_host.buffer_header.length == 0) { + /* empty buffer */ + if (msg->u.buffer_from_host.buffer_header.flags & + MMAL_BUFFER_HEADER_FLAG_EOS) { + msg_context->u.bulk.status = + dummy_bulk_receive(instance, msg_context); + if (msg_context->u.bulk.status == 0) + return; /* successful bulk submission, bulk + * completion will trigger callback + */ + } else { + /* do callback with empty buffer - not EOS though */ + msg_context->u.bulk.status = 0; + msg_context->u.bulk.buffer_used = 0; + } + } else if (msg->u.buffer_from_host.payload_in_message == 0) { + /* data is not in message, queue a bulk receive */ + msg_context->u.bulk.status = + bulk_receive(instance, msg, msg_context); + if (msg_context->u.bulk.status == 0) + return; /* successful bulk submission, bulk + * completion will trigger callback + */ + + /* failed to submit buffer, this will end badly */ + pr_err("error %d on bulk submission\n", + msg_context->u.bulk.status); + + } else if (msg->u.buffer_from_host.payload_in_message <= + MMAL_VC_SHORT_DATA) { + /* data payload within message */ + msg_context->u.bulk.status = inline_receive(instance, msg, + msg_context); + } else { + pr_err("message with invalid short payload\n"); + + /* signal error */ + msg_context->u.bulk.status = -EINVAL; + msg_context->u.bulk.buffer_used = + msg->u.buffer_from_host.payload_in_message; + } + + /* replace the buffer header */ + port_buffer_from_host(instance, msg_context->u.bulk.port); + + /* schedule the port callback */ + schedule_work(&msg_context->u.bulk.work); +} + +static void bulk_receive_cb(struct vchiq_mmal_instance *instance, + struct mmal_msg_context *msg_context) +{ + /* bulk receive operation complete */ + mutex_unlock(&msg_context->u.bulk.instance->bulk_mutex); + + /* replace the buffer header */ + port_buffer_from_host(msg_context->u.bulk.instance, + msg_context->u.bulk.port); + + msg_context->u.bulk.status = 0; + + /* schedule the port callback */ + schedule_work(&msg_context->u.bulk.work); +} + +static void bulk_abort_cb(struct vchiq_mmal_instance *instance, + struct mmal_msg_context *msg_context) +{ + pr_err("%s: bulk ABORTED msg_context:%p\n", __func__, msg_context); + + /* bulk receive operation complete */ + mutex_unlock(&msg_context->u.bulk.instance->bulk_mutex); + + /* replace the buffer header */ + port_buffer_from_host(msg_context->u.bulk.instance, + msg_context->u.bulk.port); + + msg_context->u.bulk.status = -EINTR; + + schedule_work(&msg_context->u.bulk.work); +} + +/* incoming event service callback */ +static void service_callback(void *param, + const VCHI_CALLBACK_REASON_T reason, + void *bulk_ctx) +{ + struct vchiq_mmal_instance *instance = param; + int status; + u32 msg_len; + struct mmal_msg *msg; + VCHI_HELD_MSG_T msg_handle; + + if (!instance) { + pr_err("Message callback passed NULL instance\n"); + return; + } + + switch (reason) { + case VCHI_CALLBACK_MSG_AVAILABLE: + status = vchi_msg_hold(instance->handle, (void **)&msg, + &msg_len, VCHI_FLAGS_NONE, &msg_handle); + if (status) { + pr_err("Unable to dequeue a message (%d)\n", status); + break; + } + + DBG_DUMP_MSG(msg, msg_len, "<<< reply message"); + + /* handling is different for buffer messages */ + switch (msg->h.type) { + + case MMAL_MSG_TYPE_BUFFER_FROM_HOST: + vchi_held_msg_release(&msg_handle); + break; + + case MMAL_MSG_TYPE_EVENT_TO_HOST: + event_to_host_cb(instance, msg, msg_len); + vchi_held_msg_release(&msg_handle); + + break; + + case MMAL_MSG_TYPE_BUFFER_TO_HOST: + buffer_to_host_cb(instance, msg, msg_len); + vchi_held_msg_release(&msg_handle); + break; + + default: + /* messages dependant on header context to complete */ + + /* todo: the msg.context really ought to be sanity + * checked before we just use it, afaict it comes back + * and is used raw from the videocore. Perhaps it + * should be verified the address lies in the kernel + * address space. + */ + if (msg->h.context == NULL) { + pr_err("received message context was null!\n"); + vchi_held_msg_release(&msg_handle); + break; + } + + /* fill in context values */ + msg->h.context->u.sync.msg_handle = msg_handle; + msg->h.context->u.sync.msg = msg; + msg->h.context->u.sync.msg_len = msg_len; + + /* todo: should this check (completion_done() + * == 1) for no one waiting? or do we need a + * flag to tell us the completion has been + * interrupted so we can free the message and + * its context. This probably also solves the + * message arriving after interruption todo + * below + */ + + /* complete message so caller knows it happened */ + complete(&msg->h.context->u.sync.cmplt); + break; + } + + break; + + case VCHI_CALLBACK_BULK_RECEIVED: + bulk_receive_cb(instance, bulk_ctx); + break; + + case VCHI_CALLBACK_BULK_RECEIVE_ABORTED: + bulk_abort_cb(instance, bulk_ctx); + break; + + case VCHI_CALLBACK_SERVICE_CLOSED: + /* TODO: consider if this requires action if received when + * driver is not explicitly closing the service + */ + break; + + default: + pr_err("Received unhandled message reason %d\n", reason); + break; + } +} + +static int send_synchronous_mmal_msg(struct vchiq_mmal_instance *instance, + struct mmal_msg *msg, + unsigned int payload_len, + struct mmal_msg **msg_out, + VCHI_HELD_MSG_T *msg_handle_out) +{ + struct mmal_msg_context msg_context; + int ret; + + /* payload size must not cause message to exceed max size */ + if (payload_len > + (MMAL_MSG_MAX_SIZE - sizeof(struct mmal_msg_header))) { + pr_err("payload length %d exceeds max:%d\n", payload_len, + (MMAL_MSG_MAX_SIZE - sizeof(struct mmal_msg_header))); + return -EINVAL; + } + + init_completion(&msg_context.u.sync.cmplt); + + msg->h.magic = MMAL_MAGIC; + msg->h.context = &msg_context; + msg->h.status = 0; + + DBG_DUMP_MSG(msg, (sizeof(struct mmal_msg_header) + payload_len), + ">>> sync message"); + + vchi_service_use(instance->handle); + + ret = vchi_msg_queue(instance->handle, + msg, + sizeof(struct mmal_msg_header) + payload_len, + VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); + + vchi_service_release(instance->handle); + + if (ret) { + pr_err("error %d queuing message\n", ret); + return ret; + } + + ret = wait_for_completion_timeout(&msg_context.u.sync.cmplt, HZ); + if (ret <= 0) { + pr_err("error %d waiting for sync completion\n", ret); + if (ret == 0) + ret = -ETIME; + /* todo: what happens if the message arrives after aborting */ + return ret; + } + + *msg_out = msg_context.u.sync.msg; + *msg_handle_out = msg_context.u.sync.msg_handle; + + return 0; +} + +static void dump_port_info(struct vchiq_mmal_port *port) +{ + pr_debug("port handle:0x%x enabled:%d\n", port->handle, port->enabled); + + pr_debug("buffer minimum num:%d size:%d align:%d\n", + port->minimum_buffer.num, + port->minimum_buffer.size, port->minimum_buffer.alignment); + + pr_debug("buffer recommended num:%d size:%d align:%d\n", + port->recommended_buffer.num, + port->recommended_buffer.size, + port->recommended_buffer.alignment); + + pr_debug("buffer current values num:%d size:%d align:%d\n", + port->current_buffer.num, + port->current_buffer.size, port->current_buffer.alignment); + + pr_debug("elementry stream: type:%d encoding:0x%x varient:0x%x\n", + port->format.type, + port->format.encoding, port->format.encoding_variant); + + pr_debug(" bitrate:%d flags:0x%x\n", + port->format.bitrate, port->format.flags); + + if (port->format.type == MMAL_ES_TYPE_VIDEO) { + pr_debug + ("es video format: width:%d height:%d colourspace:0x%x\n", + port->es.video.width, port->es.video.height, + port->es.video.color_space); + + pr_debug(" : crop xywh %d,%d,%d,%d\n", + port->es.video.crop.x, + port->es.video.crop.y, + port->es.video.crop.width, port->es.video.crop.height); + pr_debug(" : framerate %d/%d aspect %d/%d\n", + port->es.video.frame_rate.num, + port->es.video.frame_rate.den, + port->es.video.par.num, port->es.video.par.den); + } +} + +static void port_to_mmal_msg(struct vchiq_mmal_port *port, struct mmal_port *p) +{ + + /* todo do readonly fields need setting at all? */ + p->type = port->type; + p->index = port->index; + p->index_all = 0; + p->is_enabled = port->enabled; + p->buffer_num_min = port->minimum_buffer.num; + p->buffer_size_min = port->minimum_buffer.size; + p->buffer_alignment_min = port->minimum_buffer.alignment; + p->buffer_num_recommended = port->recommended_buffer.num; + p->buffer_size_recommended = port->recommended_buffer.size; + + /* only three writable fields in a port */ + p->buffer_num = port->current_buffer.num; + p->buffer_size = port->current_buffer.size; + p->userdata = port; +} + +static int port_info_set(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + pr_debug("setting port info port %p\n", port); + if (!port) + return -1; + dump_port_info(port); + + m.h.type = MMAL_MSG_TYPE_PORT_INFO_SET; + + m.u.port_info_set.component_handle = port->component->handle; + m.u.port_info_set.port_type = port->type; + m.u.port_info_set.port_index = port->index; + + port_to_mmal_msg(port, &m.u.port_info_set.port); + + /* elementry stream format setup */ + m.u.port_info_set.format.type = port->format.type; + m.u.port_info_set.format.encoding = port->format.encoding; + m.u.port_info_set.format.encoding_variant = + port->format.encoding_variant; + m.u.port_info_set.format.bitrate = port->format.bitrate; + m.u.port_info_set.format.flags = port->format.flags; + + memcpy(&m.u.port_info_set.es, &port->es, + sizeof(union mmal_es_specific_format)); + + m.u.port_info_set.format.extradata_size = port->format.extradata_size; + memcpy(rmsg->u.port_info_set.extradata, port->format.extradata, + port->format.extradata_size); + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.port_info_set), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != MMAL_MSG_TYPE_PORT_INFO_SET) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + /* return operation status */ + ret = -rmsg->u.port_info_get_reply.status; + + pr_debug("%s:result:%d component:0x%x port:%d\n", __func__, ret, + port->component->handle, port->handle); + +release_msg: + vchi_held_msg_release(&rmsg_handle); + + return ret; + +} + +/* use port info get message to retrive port information */ +static int port_info_get(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + /* port info time */ + m.h.type = MMAL_MSG_TYPE_PORT_INFO_GET; + m.u.port_info_get.component_handle = port->component->handle; + m.u.port_info_get.port_type = port->type; + m.u.port_info_get.index = port->index; + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.port_info_get), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != MMAL_MSG_TYPE_PORT_INFO_GET) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + /* return operation status */ + ret = -rmsg->u.port_info_get_reply.status; + if (ret != MMAL_MSG_STATUS_SUCCESS) + goto release_msg; + + if (rmsg->u.port_info_get_reply.port.is_enabled == 0) + port->enabled = false; + else + port->enabled = true; + + /* copy the values out of the message */ + port->handle = rmsg->u.port_info_get_reply.port_handle; + + /* port type and index cached to use on port info set becuase + * it does not use a port handle + */ + port->type = rmsg->u.port_info_get_reply.port_type; + port->index = rmsg->u.port_info_get_reply.port_index; + + port->minimum_buffer.num = + rmsg->u.port_info_get_reply.port.buffer_num_min; + port->minimum_buffer.size = + rmsg->u.port_info_get_reply.port.buffer_size_min; + port->minimum_buffer.alignment = + rmsg->u.port_info_get_reply.port.buffer_alignment_min; + + port->recommended_buffer.alignment = + rmsg->u.port_info_get_reply.port.buffer_alignment_min; + port->recommended_buffer.num = + rmsg->u.port_info_get_reply.port.buffer_num_recommended; + + port->current_buffer.num = rmsg->u.port_info_get_reply.port.buffer_num; + port->current_buffer.size = + rmsg->u.port_info_get_reply.port.buffer_size; + + /* stream format */ + port->format.type = rmsg->u.port_info_get_reply.format.type; + port->format.encoding = rmsg->u.port_info_get_reply.format.encoding; + port->format.encoding_variant = + rmsg->u.port_info_get_reply.format.encoding_variant; + port->format.bitrate = rmsg->u.port_info_get_reply.format.bitrate; + port->format.flags = rmsg->u.port_info_get_reply.format.flags; + + /* elementry stream format */ + memcpy(&port->es, + &rmsg->u.port_info_get_reply.es, + sizeof(union mmal_es_specific_format)); + port->format.es = &port->es; + + port->format.extradata_size = + rmsg->u.port_info_get_reply.format.extradata_size; + memcpy(port->format.extradata, + rmsg->u.port_info_get_reply.extradata, + port->format.extradata_size); + + pr_debug("received port info\n"); + dump_port_info(port); + +release_msg: + + pr_debug("%s:result:%d component:0x%x port:%d\n", + __func__, ret, port->component->handle, port->handle); + + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +/* create comonent on vc */ +static int create_component(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component, + const char *name) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + /* build component create message */ + m.h.type = MMAL_MSG_TYPE_COMPONENT_CREATE; + m.u.component_create.client_component = component; + strncpy(m.u.component_create.name, name, + sizeof(m.u.component_create.name)); + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.component_create), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != m.h.type) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + ret = -rmsg->u.component_create_reply.status; + if (ret != MMAL_MSG_STATUS_SUCCESS) + goto release_msg; + + /* a valid component response received */ + component->handle = rmsg->u.component_create_reply.component_handle; + component->inputs = rmsg->u.component_create_reply.input_num; + component->outputs = rmsg->u.component_create_reply.output_num; + component->clocks = rmsg->u.component_create_reply.clock_num; + + pr_debug("Component handle:0x%x in:%d out:%d clock:%d\n", + component->handle, + component->inputs, component->outputs, component->clocks); + +release_msg: + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +/* destroys a component on vc */ +static int destroy_component(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + m.h.type = MMAL_MSG_TYPE_COMPONENT_DESTROY; + m.u.component_destroy.component_handle = component->handle; + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.component_destroy), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != m.h.type) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + ret = -rmsg->u.component_destroy_reply.status; + +release_msg: + + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +/* enable a component on vc */ +static int enable_component(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + m.h.type = MMAL_MSG_TYPE_COMPONENT_ENABLE; + m.u.component_enable.component_handle = component->handle; + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.component_enable), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != m.h.type) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + ret = -rmsg->u.component_enable_reply.status; + +release_msg: + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +/* disable a component on vc */ +static int disable_component(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + m.h.type = MMAL_MSG_TYPE_COMPONENT_DISABLE; + m.u.component_disable.component_handle = component->handle; + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.component_disable), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != m.h.type) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + ret = -rmsg->u.component_disable_reply.status; + +release_msg: + + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +/* get version of mmal implementation */ +static int get_version(struct vchiq_mmal_instance *instance, + u32 *major_out, u32 *minor_out) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + m.h.type = MMAL_MSG_TYPE_GET_VERSION; + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.version), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != m.h.type) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + *major_out = rmsg->u.version.major; + *minor_out = rmsg->u.version.minor; + +release_msg: + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +/* do a port action with a port as a parameter */ +static int port_action_port(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + enum mmal_msg_port_action_type action_type) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + m.h.type = MMAL_MSG_TYPE_PORT_ACTION; + m.u.port_action_port.component_handle = port->component->handle; + m.u.port_action_port.port_handle = port->handle; + m.u.port_action_port.action = action_type; + + port_to_mmal_msg(port, &m.u.port_action_port.port); + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.port_action_port), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != MMAL_MSG_TYPE_PORT_ACTION) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + ret = -rmsg->u.port_action_reply.status; + + pr_debug("%s:result:%d component:0x%x port:%d action:%s(%d)\n", + __func__, + ret, port->component->handle, port->handle, + port_action_type_names[action_type], action_type); + +release_msg: + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +/* do a port action with handles as parameters */ +static int port_action_handle(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + enum mmal_msg_port_action_type action_type, + u32 connect_component_handle, + u32 connect_port_handle) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + m.h.type = MMAL_MSG_TYPE_PORT_ACTION; + + m.u.port_action_handle.component_handle = port->component->handle; + m.u.port_action_handle.port_handle = port->handle; + m.u.port_action_handle.action = action_type; + + m.u.port_action_handle.connect_component_handle = + connect_component_handle; + m.u.port_action_handle.connect_port_handle = connect_port_handle; + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(m.u.port_action_handle), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != MMAL_MSG_TYPE_PORT_ACTION) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + ret = -rmsg->u.port_action_reply.status; + + pr_debug("%s:result:%d component:0x%x port:%d action:%s(%d)" \ + " connect component:0x%x connect port:%d\n", + __func__, + ret, port->component->handle, port->handle, + port_action_type_names[action_type], + action_type, connect_component_handle, connect_port_handle); + +release_msg: + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +static int port_parameter_set(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + u32 parameter_id, void *value, u32 value_size) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + m.h.type = MMAL_MSG_TYPE_PORT_PARAMETER_SET; + + m.u.port_parameter_set.component_handle = port->component->handle; + m.u.port_parameter_set.port_handle = port->handle; + m.u.port_parameter_set.id = parameter_id; + m.u.port_parameter_set.size = (2 * sizeof(u32)) + value_size; + memcpy(&m.u.port_parameter_set.value, value, value_size); + + ret = send_synchronous_mmal_msg(instance, &m, + (4 * sizeof(u32)) + value_size, + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != MMAL_MSG_TYPE_PORT_PARAMETER_SET) { + /* got an unexpected message type in reply */ + ret = -EINVAL; + goto release_msg; + } + + ret = -rmsg->u.port_parameter_set_reply.status; + + pr_debug("%s:result:%d component:0x%x port:%d parameter:%d\n", + __func__, + ret, port->component->handle, port->handle, parameter_id); + +release_msg: + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +static int port_parameter_get(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + u32 parameter_id, void *value, u32 *value_size) +{ + int ret; + struct mmal_msg m; + struct mmal_msg *rmsg; + VCHI_HELD_MSG_T rmsg_handle; + + m.h.type = MMAL_MSG_TYPE_PORT_PARAMETER_GET; + + m.u.port_parameter_get.component_handle = port->component->handle; + m.u.port_parameter_get.port_handle = port->handle; + m.u.port_parameter_get.id = parameter_id; + m.u.port_parameter_get.size = (2 * sizeof(u32)) + *value_size; + + ret = send_synchronous_mmal_msg(instance, &m, + sizeof(struct + mmal_msg_port_parameter_get), + &rmsg, &rmsg_handle); + if (ret) + return ret; + + if (rmsg->h.type != MMAL_MSG_TYPE_PORT_PARAMETER_GET) { + /* got an unexpected message type in reply */ + pr_err("Incorrect reply type %d\n", rmsg->h.type); + ret = -EINVAL; + goto release_msg; + } + + ret = -rmsg->u.port_parameter_get_reply.status; + if (ret) { + /* Copy only as much as we have space for + * but report true size of parameter + */ + memcpy(value, &rmsg->u.port_parameter_get_reply.value, + *value_size); + *value_size = rmsg->u.port_parameter_get_reply.size; + } else + memcpy(value, &rmsg->u.port_parameter_get_reply.value, + rmsg->u.port_parameter_get_reply.size); + + pr_info("%s:result:%d component:0x%x port:%d parameter:%d\n", __func__, + ret, port->component->handle, port->handle, parameter_id); + +release_msg: + vchi_held_msg_release(&rmsg_handle); + + return ret; +} + +/* disables a port and drains buffers from it */ +static int port_disable(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port) +{ + int ret; + struct list_head *q, *buf_head; + unsigned long flags = 0; + + if (!port->enabled) + return 0; + + port->enabled = false; + + ret = port_action_port(instance, port, + MMAL_MSG_PORT_ACTION_TYPE_DISABLE); + if (ret == 0) { + + /* drain all queued buffers on port */ + spin_lock_irqsave(&port->slock, flags); + + list_for_each_safe(buf_head, q, &port->buffers) { + struct mmal_buffer *mmalbuf; + mmalbuf = list_entry(buf_head, struct mmal_buffer, + list); + list_del(buf_head); + if (port->buffer_cb) + port->buffer_cb(instance, + port, 0, mmalbuf, 0, 0, + MMAL_TIME_UNKNOWN, + MMAL_TIME_UNKNOWN); + } + + spin_unlock_irqrestore(&port->slock, flags); + + ret = port_info_get(instance, port); + } + + return ret; +} + +/* enable a port */ +static int port_enable(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port) +{ + unsigned int hdr_count; + struct list_head *buf_head; + int ret; + + if (port->enabled) + return 0; + + /* ensure there are enough buffers queued to cover the buffer headers */ + if (port->buffer_cb != NULL) { + hdr_count = 0; + list_for_each(buf_head, &port->buffers) { + hdr_count++; + } + if (hdr_count < port->current_buffer.num) + return -ENOSPC; + } + + ret = port_action_port(instance, port, + MMAL_MSG_PORT_ACTION_TYPE_ENABLE); + if (ret) + goto done; + + port->enabled = true; + + if (port->buffer_cb) { + /* send buffer headers to videocore */ + hdr_count = 1; + list_for_each(buf_head, &port->buffers) { + struct mmal_buffer *mmalbuf; + mmalbuf = list_entry(buf_head, struct mmal_buffer, + list); + ret = buffer_from_host(instance, port, mmalbuf); + if (ret) + goto done; + + hdr_count++; + if (hdr_count > port->current_buffer.num) + break; + } + } + + ret = port_info_get(instance, port); + +done: + return ret; +} + +/* ------------------------------------------------------------------ + * Exported API + *------------------------------------------------------------------*/ + +int vchiq_mmal_port_set_format(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + ret = port_info_set(instance, port); + if (ret) + goto release_unlock; + + /* read what has actually been set */ + ret = port_info_get(instance, port); + +release_unlock: + mutex_unlock(&instance->vchiq_mutex); + + return ret; + +} + +int vchiq_mmal_port_parameter_set(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + u32 parameter, void *value, u32 value_size) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + ret = port_parameter_set(instance, port, parameter, value, value_size); + + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +int vchiq_mmal_port_parameter_get(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + u32 parameter, void *value, u32 *value_size) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + ret = port_parameter_get(instance, port, parameter, value, value_size); + + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +/* enable a port + * + * enables a port and queues buffers for satisfying callbacks if we + * provide a callback handler + */ +int vchiq_mmal_port_enable(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + vchiq_mmal_buffer_cb buffer_cb) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + /* already enabled - noop */ + if (port->enabled) { + ret = 0; + goto unlock; + } + + port->buffer_cb = buffer_cb; + + ret = port_enable(instance, port); + +unlock: + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +int vchiq_mmal_port_disable(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + if (!port->enabled) { + mutex_unlock(&instance->vchiq_mutex); + return 0; + } + + ret = port_disable(instance, port); + + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +/* ports will be connected in a tunneled manner so data buffers + * are not handled by client. + */ +int vchiq_mmal_port_connect_tunnel(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *src, + struct vchiq_mmal_port *dst) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + /* disconnect ports if connected */ + if (src->connected != NULL) { + ret = port_disable(instance, src); + if (ret) { + pr_err("failed disabling src port(%d)\n", ret); + goto release_unlock; + } + + /* do not need to disable the destination port as they + * are connected and it is done automatically + */ + + ret = port_action_handle(instance, src, + MMAL_MSG_PORT_ACTION_TYPE_DISCONNECT, + src->connected->component->handle, + src->connected->handle); + if (ret < 0) { + pr_err("failed disconnecting src port\n"); + goto release_unlock; + } + src->connected->enabled = false; + src->connected = NULL; + } + + if (dst == NULL) { + /* do not make new connection */ + ret = 0; + pr_debug("not making new connection\n"); + goto release_unlock; + } + + /* copy src port format to dst */ + dst->format.encoding = src->format.encoding; + dst->es.video.width = src->es.video.width; + dst->es.video.height = src->es.video.height; + dst->es.video.crop.x = src->es.video.crop.x; + dst->es.video.crop.y = src->es.video.crop.y; + dst->es.video.crop.width = src->es.video.crop.width; + dst->es.video.crop.height = src->es.video.crop.height; + dst->es.video.frame_rate.num = src->es.video.frame_rate.num; + dst->es.video.frame_rate.den = src->es.video.frame_rate.den; + + /* set new format */ + ret = port_info_set(instance, dst); + if (ret) { + pr_debug("setting port info failed\n"); + goto release_unlock; + } + + /* read what has actually been set */ + ret = port_info_get(instance, dst); + if (ret) { + pr_debug("read back port info failed\n"); + goto release_unlock; + } + + /* connect two ports together */ + ret = port_action_handle(instance, src, + MMAL_MSG_PORT_ACTION_TYPE_CONNECT, + dst->component->handle, dst->handle); + if (ret < 0) { + pr_debug("connecting port %d:%d to %d:%d failed\n", + src->component->handle, src->handle, + dst->component->handle, dst->handle); + goto release_unlock; + } + src->connected = dst; + +release_unlock: + + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +int vchiq_mmal_submit_buffer(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + struct mmal_buffer *buffer) +{ + unsigned long flags = 0; + + spin_lock_irqsave(&port->slock, flags); + list_add_tail(&buffer->list, &port->buffers); + spin_unlock_irqrestore(&port->slock, flags); + + /* the port previously underflowed because it was missing a + * mmal_buffer which has just been added, submit that buffer + * to the mmal service. + */ + if (port->buffer_underflow) { + port_buffer_from_host(instance, port); + port->buffer_underflow--; + } + + return 0; +} + +/* Initialise a mmal component and its ports + * + */ +int vchiq_mmal_component_init(struct vchiq_mmal_instance *instance, + const char *name, + struct vchiq_mmal_component **component_out) +{ + int ret; + int idx; /* port index */ + struct vchiq_mmal_component *component; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + if (instance->component_idx == VCHIQ_MMAL_MAX_COMPONENTS) { + ret = -EINVAL; /* todo is this correct error? */ + goto unlock; + } + + component = &instance->component[instance->component_idx]; + + ret = create_component(instance, component, name); + if (ret < 0) + goto unlock; + + /* ports info needs gathering */ + component->control.type = MMAL_PORT_TYPE_CONTROL; + component->control.index = 0; + component->control.component = component; + spin_lock_init(&component->control.slock); + INIT_LIST_HEAD(&component->control.buffers); + ret = port_info_get(instance, &component->control); + if (ret < 0) + goto release_component; + + for (idx = 0; idx < component->inputs; idx++) { + component->input[idx].type = MMAL_PORT_TYPE_INPUT; + component->input[idx].index = idx; + component->input[idx].component = component; + spin_lock_init(&component->input[idx].slock); + INIT_LIST_HEAD(&component->input[idx].buffers); + ret = port_info_get(instance, &component->input[idx]); + if (ret < 0) + goto release_component; + } + + for (idx = 0; idx < component->outputs; idx++) { + component->output[idx].type = MMAL_PORT_TYPE_OUTPUT; + component->output[idx].index = idx; + component->output[idx].component = component; + spin_lock_init(&component->output[idx].slock); + INIT_LIST_HEAD(&component->output[idx].buffers); + ret = port_info_get(instance, &component->output[idx]); + if (ret < 0) + goto release_component; + } + + for (idx = 0; idx < component->clocks; idx++) { + component->clock[idx].type = MMAL_PORT_TYPE_CLOCK; + component->clock[idx].index = idx; + component->clock[idx].component = component; + spin_lock_init(&component->clock[idx].slock); + INIT_LIST_HEAD(&component->clock[idx].buffers); + ret = port_info_get(instance, &component->clock[idx]); + if (ret < 0) + goto release_component; + } + + instance->component_idx++; + + *component_out = component; + + mutex_unlock(&instance->vchiq_mutex); + + return 0; + +release_component: + destroy_component(instance, component); +unlock: + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +/* + * cause a mmal component to be destroyed + */ +int vchiq_mmal_component_finalise(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + if (component->enabled) + ret = disable_component(instance, component); + + ret = destroy_component(instance, component); + + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +/* + * cause a mmal component to be enabled + */ +int vchiq_mmal_component_enable(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + if (component->enabled) { + mutex_unlock(&instance->vchiq_mutex); + return 0; + } + + ret = enable_component(instance, component); + if (ret == 0) + component->enabled = true; + + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +/* + * cause a mmal component to be enabled + */ +int vchiq_mmal_component_disable(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + if (!component->enabled) { + mutex_unlock(&instance->vchiq_mutex); + return 0; + } + + ret = disable_component(instance, component); + if (ret == 0) + component->enabled = false; + + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +int vchiq_mmal_version(struct vchiq_mmal_instance *instance, + u32 *major_out, u32 *minor_out) +{ + int ret; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + ret = get_version(instance, major_out, minor_out); + + mutex_unlock(&instance->vchiq_mutex); + + return ret; +} + +int vchiq_mmal_finalise(struct vchiq_mmal_instance *instance) +{ + int status = 0; + + if (instance == NULL) + return -EINVAL; + + if (mutex_lock_interruptible(&instance->vchiq_mutex)) + return -EINTR; + + vchi_service_use(instance->handle); + + status = vchi_service_close(instance->handle); + if (status != 0) + pr_err("mmal-vchiq: VCHIQ close failed"); + + mutex_unlock(&instance->vchiq_mutex); + + vfree(instance->bulk_scratch); + + kfree(instance); + + return status; +} + +int vchiq_mmal_init(struct vchiq_mmal_instance **out_instance) +{ + int status; + struct vchiq_mmal_instance *instance; + static VCHI_CONNECTION_T *vchi_connection; + static VCHI_INSTANCE_T vchi_instance; + SERVICE_CREATION_T params = { + VCHI_VERSION_EX(VC_MMAL_VER, VC_MMAL_MIN_VER), + VC_MMAL_SERVER_NAME, + vchi_connection, + 0, /* rx fifo size (unused) */ + 0, /* tx fifo size (unused) */ + service_callback, + NULL, /* service callback parameter */ + 1, /* unaligned bulk receives */ + 1, /* unaligned bulk transmits */ + 0 /* want crc check on bulk transfers */ + }; + + /* compile time checks to ensure structure size as they are + * directly (de)serialised from memory. + */ + + /* ensure the header structure has packed to the correct size */ + BUILD_BUG_ON(sizeof(struct mmal_msg_header) != 24); + + /* ensure message structure does not exceed maximum length */ + BUILD_BUG_ON(sizeof(struct mmal_msg) > MMAL_MSG_MAX_SIZE); + + /* mmal port struct is correct size */ + BUILD_BUG_ON(sizeof(struct mmal_port) != 64); + + /* create a vchi instance */ + status = vchi_initialise(&vchi_instance); + if (status) { + pr_err("Failed to initialise VCHI instance (status=%d)\n", + status); + return -EIO; + } + + status = vchi_connect(NULL, 0, vchi_instance); + if (status) { + pr_err("Failed to connect VCHI instance (status=%d)\n", status); + return -EIO; + } + + instance = kmalloc(sizeof(*instance), GFP_KERNEL); + memset(instance, 0, sizeof(*instance)); + + mutex_init(&instance->vchiq_mutex); + mutex_init(&instance->bulk_mutex); + + instance->bulk_scratch = vmalloc(PAGE_SIZE); + + params.callback_param = instance; + + status = vchi_service_open(vchi_instance, ¶ms, &instance->handle); + if (status) { + pr_err("Failed to open VCHI service connection (status=%d)\n", + status); + goto err_close_services; + } + + vchi_service_release(instance->handle); + + *out_instance = instance; + + return 0; + +err_close_services: + + vchi_service_close(instance->handle); + vfree(instance->bulk_scratch); + kfree(instance); + return -ENODEV; +} diff --git a/drivers/media/platform/bcm2835/mmal-vchiq.h b/drivers/media/platform/bcm2835/mmal-vchiq.h new file mode 100644 index 0000000..9d1d11e --- /dev/null +++ b/drivers/media/platform/bcm2835/mmal-vchiq.h @@ -0,0 +1,178 @@ +/* + * Broadcom BM2835 V4L2 driver + * + * Copyright © 2013 Raspberry Pi (Trading) Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: Vincent Sanders + * Dave Stevenson + * Simon Mellor + * Luke Diamand + * + * MMAL interface to VCHIQ message passing + */ + +#ifndef MMAL_VCHIQ_H +#define MMAL_VCHIQ_H + +#include "mmal-msg-format.h" + +#define MAX_PORT_COUNT 4 + +/* Maximum size of the format extradata. */ +#define MMAL_FORMAT_EXTRADATA_MAX_SIZE 128 + +struct vchiq_mmal_instance; + +enum vchiq_mmal_es_type { + MMAL_ES_TYPE_UNKNOWN, /**< Unknown elementary stream type */ + MMAL_ES_TYPE_CONTROL, /**< Elementary stream of control commands */ + MMAL_ES_TYPE_AUDIO, /**< Audio elementary stream */ + MMAL_ES_TYPE_VIDEO, /**< Video elementary stream */ + MMAL_ES_TYPE_SUBPICTURE /**< Sub-picture elementary stream */ +}; + +/* rectangle, used lots so it gets its own struct */ +struct vchiq_mmal_rect { + s32 x; + s32 y; + s32 width; + s32 height; +}; + +struct vchiq_mmal_port_buffer { + unsigned int num; /* number of buffers */ + u32 size; /* size of buffers */ + u32 alignment; /* alignment of buffers */ +}; + +struct vchiq_mmal_port; + +typedef void (*vchiq_mmal_buffer_cb)( + struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + int status, struct mmal_buffer *buffer, + unsigned long length, u32 mmal_flags, s64 dts, s64 pts); + +struct vchiq_mmal_port { + bool enabled; + u32 handle; + u32 type; /* port type, cached to use on port info set */ + u32 index; /* port index, cached to use on port info set */ + + /* component port belongs to, allows simple deref */ + struct vchiq_mmal_component *component; + + struct vchiq_mmal_port *connected; /* port conencted to */ + + /* buffer info */ + struct vchiq_mmal_port_buffer minimum_buffer; + struct vchiq_mmal_port_buffer recommended_buffer; + struct vchiq_mmal_port_buffer current_buffer; + + /* stream format */ + struct mmal_es_format format; + /* elementry stream format */ + union mmal_es_specific_format es; + + /* data buffers to fill */ + struct list_head buffers; + /* lock to serialise adding and removing buffers from list */ + spinlock_t slock; + /* count of how many buffer header refils have failed because + * there was no buffer to satisfy them + */ + int buffer_underflow; + /* callback on buffer completion */ + vchiq_mmal_buffer_cb buffer_cb; + /* callback context */ + void *cb_ctx; +}; + +struct vchiq_mmal_component { + bool enabled; + u32 handle; /* VideoCore handle for component */ + u32 inputs; /* Number of input ports */ + u32 outputs; /* Number of output ports */ + u32 clocks; /* Number of clock ports */ + struct vchiq_mmal_port control; /* control port */ + struct vchiq_mmal_port input[MAX_PORT_COUNT]; /* input ports */ + struct vchiq_mmal_port output[MAX_PORT_COUNT]; /* output ports */ + struct vchiq_mmal_port clock[MAX_PORT_COUNT]; /* clock ports */ +}; + + +int vchiq_mmal_init(struct vchiq_mmal_instance **out_instance); +int vchiq_mmal_finalise(struct vchiq_mmal_instance *instance); + +/* Initialise a mmal component and its ports +* +*/ +int vchiq_mmal_component_init( + struct vchiq_mmal_instance *instance, + const char *name, + struct vchiq_mmal_component **component_out); + +int vchiq_mmal_component_finalise( + struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component); + +int vchiq_mmal_component_enable( + struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component); + +int vchiq_mmal_component_disable( + struct vchiq_mmal_instance *instance, + struct vchiq_mmal_component *component); + + + +/* enable a mmal port + * + * enables a port and if a buffer callback provided enque buffer + * headers as apropriate for the port. + */ +int vchiq_mmal_port_enable( + struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + vchiq_mmal_buffer_cb buffer_cb); + +/* disable a port + * + * disable a port will dequeue any pending buffers + */ +int vchiq_mmal_port_disable(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port); + + +int vchiq_mmal_port_parameter_set(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + u32 parameter, + void *value, + u32 value_size); + +int vchiq_mmal_port_parameter_get(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + u32 parameter, + void *value, + u32 *value_size); + +int vchiq_mmal_port_set_format(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port); + +int vchiq_mmal_port_connect_tunnel(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *src, + struct vchiq_mmal_port *dst); + +int vchiq_mmal_version(struct vchiq_mmal_instance *instance, + u32 *major_out, + u32 *minor_out); + +int vchiq_mmal_submit_buffer(struct vchiq_mmal_instance *instance, + struct vchiq_mmal_port *port, + struct mmal_buffer *buf); + +#endif /* MMAL_VCHIQ_H */ -- 1.9.1