diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0747-staging-vc04_services-bcm2835-codec-Avoid-fragmentin.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0747-staging-vc04_services-bcm2835-codec-Avoid-fragmentin.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0747-staging-vc04_services-bcm2835-codec-Avoid-fragmentin.patch b/target/linux/bcm27xx/patches-5.4/950-0747-staging-vc04_services-bcm2835-codec-Avoid-fragmentin.patch new file mode 100644 index 0000000000..da273ca65b --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0747-staging-vc04_services-bcm2835-codec-Avoid-fragmentin.patch @@ -0,0 +1,32 @@ +From 39956d31d19658af7a0759e05366d4bc1c04a50a Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Fri, 15 May 2020 13:47:13 +0100 +Subject: [PATCH] staging:vc04_services: bcm2835-codec: Avoid + fragmenting buffers + +The firmware by default is quite happy to fragment encoded +frames as the original MMAL and IL APIs support this. +V4L2 doesn't, so we need to enable the firmware option to avoid this. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c ++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c +@@ -1972,6 +1972,14 @@ static int bcm2835_codec_create_componen + &ctx->component->control, + MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME, + ¶m, sizeof(param)); ++ /* ++ * Avoid fragmenting the buffers over multiple frames (unless ++ * the frame is bigger than the whole buffer) ++ */ ++ vchiq_mmal_port_parameter_set(ctx->dev->instance, ++ &ctx->component->control, ++ MMAL_PARAMETER_MINIMISE_FRAGMENTATION, ++ ¶m, sizeof(param)); + } else { + if (ctx->q_data[V4L2_M2M_DST].sizeimage < + ctx->component->output[0].minimum_buffer.size) |