diff options
Diffstat (limited to 'drivers/media/pci/cx18/cx18-controls.c')
| -rw-r--r-- | drivers/media/pci/cx18/cx18-controls.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/media/pci/cx18/cx18-controls.c b/drivers/media/pci/cx18/cx18-controls.c new file mode 100644 index 0000000..282a3d2 --- /dev/null +++ b/drivers/media/pci/cx18/cx18-controls.c @@ -0,0 +1,131 @@ +/* + * cx18 ioctl control functions + * + * Derived from ivtv-controls.c + * + * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> + * + * 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., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA + */ +#include <linux/kernel.h> +#include <linux/slab.h> + +#include "cx18-driver.h" +#include "cx18-cards.h" +#include "cx18-ioctl.h" +#include "cx18-audio.h" +#include "cx18-mailbox.h" +#include "cx18-controls.h" + +static int cx18_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt) +{ + struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl); + int type = cxhdl->stream_type->val; + + if (atomic_read(&cx->ana_capturing) > 0) + return -EBUSY; + + if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV || + !(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS || + type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD || + type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) { + /* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */ + cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE; + CX18_DEBUG_INFO("disabled insertion of sliced VBI data into " + "the MPEG stream\n"); + return 0; + } + + /* Allocate sliced VBI buffers if needed. */ + if (cx->vbi.sliced_mpeg_data[0] == NULL) { + int i; + + for (i = 0; i < CX18_VBI_FRAMES; i++) { + cx->vbi.sliced_mpeg_data[i] = + kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL); + if (cx->vbi.sliced_mpeg_data[i] == NULL) { + while (--i >= 0) { + kfree(cx->vbi.sliced_mpeg_data[i]); + cx->vbi.sliced_mpeg_data[i] = NULL; + } + cx->vbi.insert_mpeg = + V4L2_MPEG_STREAM_VBI_FMT_NONE; + CX18_WARN("Unable to allocate buffers for " + "sliced VBI data insertion\n"); + return -ENOMEM; + } + } + } + + cx->vbi.insert_mpeg = fmt; + CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS," + "when sliced VBI is enabled\n"); + + /* + * If our current settings have no lines set for capture, store a valid, + * default set of service lines to capture, in our current settings. + */ + if (cx18_get_service_set(cx->vbi.sliced_in) == 0) { + if (cx->is_60hz) + cx->vbi.sliced_in->service_set = + V4L2_SLICED_CAPTION_525; + else + cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625; + cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz); + } + return 0; +} + +static int cx18_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val) +{ + struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl); + int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1; + struct v4l2_mbus_framefmt fmt; + + /* fix videodecoder resolution */ + fmt.width = cxhdl->width / (is_mpeg1 ? 2 : 1); + fmt.height = cxhdl->height; + fmt.code = V4L2_MBUS_FMT_FIXED; + v4l2_subdev_call(cx->sd_av, video, s_mbus_fmt, &fmt); + return 0; +} + +static int cx18_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx) +{ + static const u32 freqs[3] = { 44100, 48000, 32000 }; + struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl); + + /* The audio clock of the digitizer must match the codec sample + rate otherwise you get some very strange effects. */ + if (idx < ARRAY_SIZE(freqs)) + cx18_call_all(cx, audio, s_clock_freq, freqs[idx]); + return 0; +} + +static int cx18_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val) +{ + struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl); + + cx->dualwatch_stereo_mode = val; + return 0; +} + +struct cx2341x_handler_ops cx18_cxhdl_ops = { + .s_audio_mode = cx18_s_audio_mode, + .s_audio_sampling_freq = cx18_s_audio_sampling_freq, + .s_video_encoding = cx18_s_video_encoding, + .s_stream_vbi_fmt = cx18_s_stream_vbi_fmt, +}; |