On 7/14/20 7:09 PM, Nicolas Dufresne wrote: > Le lundi 13 juillet 2020 à 11:15 +0300, Stanimir Varbanov a écrit : >> Add menu control for VP9 codec levels. A total of 14 levels are >> defined for Profile 0 (8bit) and Profile 2 (10bit). Each level >> is a set of constrained bitstreams coded with targeted resolutions, >> frame rates, and bitrates. > > Looks good to me. Perhaps literally put the link in the message ? > > https://www.webmproject.org/vp9/levels/ sure, I will do that. > >> >> The definition has been taken from webm project. >> >> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx> >> --- >> .../media/v4l/ext-ctrls-codec.rst | 42 +++++++++++++++++++ >> drivers/media/v4l2-core/v4l2-ctrls.c | 21 ++++++++++ >> include/uapi/linux/v4l2-controls.h | 17 ++++++++ >> 3 files changed, 80 insertions(+) >> >> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst >> index d0d506a444b1..d49bdafa768a 100644 >> --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst >> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst >> @@ -3316,6 +3316,48 @@ enum v4l2_mpeg_video_vp9_profile - >> * - ``V4L2_MPEG_VIDEO_VP9_PROFILE_3`` >> - Profile 3 >> >> +.. _v4l2-mpeg-video-vp9-level: >> + >> +``V4L2_CID_MPEG_VIDEO_VP9_LEVEL (enum)`` >> + >> +enum v4l2_mpeg_video_vp9_level - >> + This control allows selecting the level for VP9 encoder. >> + This is also used to enumerate supported levels by VP9 encoder or decoder. >> + Possible values are: > > Shall we add some hint in the doc itself upon where these levels are > from so one can figure-out what constraints they impose. Fine by me. The same link as in the commit message? > > Also, as for other levels (H264/HEVC), all drivers are mostly dummy and > don't validate any of this, shall we keep it this way ? Levels are in > fact complex, because some of the constraints are in image size, and > most of the other constraints are raw or compressed size over time, so > requires timing information for let's say a CBR encoder to enforce it, > for the S_FMT function for the raw constraints. I think this should be a driver responsibility. > >> + >> +.. flat-table:: >> + :header-rows: 0 >> + :stub-columns: 0 >> + >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_1_0`` >> + - Level 1 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_1_1`` >> + - Level 1.1 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_2_0`` >> + - Level 2 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_2_1`` >> + - Level 2.1 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_3_0`` >> + - Level 3 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_3_1`` >> + - Level 3.1 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_4_0`` >> + - Level 4 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_4_1`` >> + - Level 4.1 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_5_0`` >> + - Level 5 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_5_1`` >> + - Level 5.1 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_5_2`` >> + - Level 5.2 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_6_0`` >> + - Level 6 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_6_1`` >> + - Level 6.1 >> + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_6_2`` >> + - Level 6.2 >> + >> >> High Efficiency Video Coding (HEVC/H.265) Control Reference >> =========================================================== >> diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c >> index 3f3fbcd60cc6..359dc737053d 100644 >> --- a/drivers/media/v4l2-core/v4l2-ctrls.c >> +++ b/drivers/media/v4l2-core/v4l2-ctrls.c >> @@ -474,6 +474,23 @@ const char * const *v4l2_ctrl_get_menu(u32 id) >> "3", >> NULL, >> }; >> + static const char * const vp9_level[] = { >> + "1", >> + "1.1", >> + "2", >> + "2.1", >> + "3", >> + "3.1", >> + "4", >> + "4.1", >> + "5", >> + "5.1", >> + "5.2", >> + "6", >> + "6.1", >> + "6.2", >> + NULL, >> + }; >> >> static const char * const flash_led_mode[] = { >> "Off", >> @@ -685,6 +702,8 @@ const char * const *v4l2_ctrl_get_menu(u32 id) >> return vp8_profile; >> case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: >> return vp9_profile; >> + case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: >> + return vp9_level; >> case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: >> return jpeg_chroma_subsampling; >> case V4L2_CID_DV_TX_MODE: >> @@ -938,6 +957,7 @@ const char *v4l2_ctrl_get_name(u32 id) >> case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP: return "VPX P-Frame QP Value"; >> case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: return "VP8 Profile"; >> case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: return "VP9 Profile"; >> + case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: return "VP9 Level"; >> case V4L2_CID_MPEG_VIDEO_VP8_FRAME_HEADER: return "VP8 Frame Header"; >> >> /* HEVC controls */ >> @@ -1294,6 +1314,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, >> case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: >> case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: >> case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: >> + case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: >> case V4L2_CID_DETECT_MD_MODE: >> case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: >> case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: >> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h >> index 62271418c1be..1b0bc79c1bc3 100644 >> --- a/include/uapi/linux/v4l2-controls.h >> +++ b/include/uapi/linux/v4l2-controls.h >> @@ -650,6 +650,23 @@ enum v4l2_mpeg_video_vp9_profile { >> V4L2_MPEG_VIDEO_VP9_PROFILE_2 = 2, >> V4L2_MPEG_VIDEO_VP9_PROFILE_3 = 3, >> }; >> +#define V4L2_CID_MPEG_VIDEO_VP9_LEVEL (V4L2_CID_MPEG_BASE+513) >> +enum v4l2_mpeg_video_vp9_level { >> + V4L2_MPEG_VIDEO_VP9_LEVEL_1_0 = 0, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_1_1 = 1, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_2_0 = 2, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_2_1 = 3, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_3_0 = 4, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_3_1 = 5, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_4_0 = 6, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_4_1 = 7, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_5_0 = 8, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_5_1 = 9, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_5_2 = 10, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_6_0 = 11, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_6_1 = 12, >> + V4L2_MPEG_VIDEO_VP9_LEVEL_6_2 = 13, >> +}; >> >> /* CIDs for HEVC encoding. */ >> > -- regards, Stan
