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| author | Maheshwar Ajja <majja@codeaurora.org> | 2020-05-23 04:05:26 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-09-01 15:13:29 +0300 |
| commit | 4ad1b0d410c88c7c8e8fd1298c9d2293b651e35c (patch) | |
| tree | b3e972f783e5484061c8e4af8ac896075b8a076e /drivers/media/v4l2-core | |
| parent | 73d513e45ac7e5219388bee98d36aae820d2876c (diff) | |
| download | linux-4ad1b0d410c88c7c8e8fd1298c9d2293b651e35c.tar.xz | |
media: v4l2-ctrls: Add encoder constant quality control
When V4L2_CID_MPEG_VIDEO_BITRATE_MODE value is
V4L2_MPEG_VIDEO_BITRATE_MODE_CQ, encoder will produce
constant quality output indicated by
V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY control value.
Encoder will choose appropriate quantization parameter
and bitrate to produce requested frame quality level.
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ctrls.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index b846f5b089c9..83372789eec3 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -200,6 +200,7 @@ const char * const *v4l2_ctrl_get_menu(u32 id) static const char * const mpeg_video_bitrate_mode[] = { "Variable Bitrate", "Constant Bitrate", + "Constant Quality", NULL }; static const char * const mpeg_stream_type[] = { @@ -832,6 +833,7 @@ const char *v4l2_ctrl_get_name(u32 id) case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure"; case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown"; case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode"; + case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY: return "Constant Quality"; case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate"; case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate"; case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation"; |