| Message ID | dbco8ghdj1a934s737s9auegilbvafdjpl@4ax.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: hevc: Add sps_max_sub_layers_minus1 to v4l2_ctrl_hevc_sps | expand |
Hi Benjamin, On 30/04/2021 18:48, John Cox wrote: > sps_max_sub_layers_minus1 is needed if the driver wishes to determine > whether or not a frame might be used for reference. How does this patch from John relate to your "Add HANTRO G2/HEVC decoder support for IMX8MQ" patch series? Can I apply both this patch and your patch series? Does this patch make sense for the HEVC stateless API? You have been digging into HEVC, so I hope you can help out. Regards, Hans > > Signed-off-by: John Cox <jc@kynesim.co.uk> > --- > This is useful to the Pi H265 decoder as it allows it to only create > and store MV info for frames that need to. > > Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 3 +++ > include/media/hevc-ctrls.h | 3 +-- > 2 files changed, 4 insertions(+), 2 deletions(-) > > diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > index b0de4e6e7ebd..9a891202abbf 100644 > --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > @@ -2924,6 +2924,9 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - > * - __u8 > - ``chroma_format_idc`` > - > + * - __u8 > + - ``sps_max_sub_layers_minus1`` > + - > * - __u64 > - ``flags`` > - See :ref:`Sequence Parameter Set Flags <hevc_sps_flags>` > diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h > index b4cb2ef02f17..b2d296b77653 100644 > --- a/include/media/hevc-ctrls.h > +++ b/include/media/hevc-ctrls.h > @@ -75,8 +75,7 @@ struct v4l2_ctrl_hevc_sps { > __u8 num_short_term_ref_pic_sets; > __u8 num_long_term_ref_pics_sps; > __u8 chroma_format_idc; > - > - __u8 padding; > + __u8 sps_max_sub_layers_minus1; > > __u64 flags; > }; >
Le 27/05/2021 à 09:19, Hans Verkuil a écrit : > Hi Benjamin, > > On 30/04/2021 18:48, John Cox wrote: >> sps_max_sub_layers_minus1 is needed if the driver wishes to determine >> whether or not a frame might be used for reference. > How does this patch from John relate to your "Add HANTRO G2/HEVC decoder > support for IMX8MQ" patch series? Hantro hardware doesn't use this information but that could help to optimize the number of reference frames. > > Can I apply both this patch and your patch series? Does this patch make > sense for the HEVC stateless API? Yes it part of the HEVC specification, that will help to move it out of staging. Regards, Benjamin > > You have been digging into HEVC, so I hope you can help out. > > Regards, > > Hans > >> Signed-off-by: John Cox <jc@kynesim.co.uk> Reviewed-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> >> --- >> This is useful to the Pi H265 decoder as it allows it to only create >> and store MV info for frames that need to. >> >> Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 3 +++ >> include/media/hevc-ctrls.h | 3 +-- >> 2 files changed, 4 insertions(+), 2 deletions(-) >> >> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst >> index b0de4e6e7ebd..9a891202abbf 100644 >> --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst >> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst >> @@ -2924,6 +2924,9 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - >> * - __u8 >> - ``chroma_format_idc`` >> - >> + * - __u8 >> + - ``sps_max_sub_layers_minus1`` >> + - >> * - __u64 >> - ``flags`` >> - See :ref:`Sequence Parameter Set Flags <hevc_sps_flags>` >> diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h >> index b4cb2ef02f17..b2d296b77653 100644 >> --- a/include/media/hevc-ctrls.h >> +++ b/include/media/hevc-ctrls.h >> @@ -75,8 +75,7 @@ struct v4l2_ctrl_hevc_sps { >> __u8 num_short_term_ref_pic_sets; >> __u8 num_long_term_ref_pics_sps; >> __u8 chroma_format_idc; >> - >> - __u8 padding; >> + __u8 sps_max_sub_layers_minus1; >> >> __u64 flags; >> }; >>
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index b0de4e6e7ebd..9a891202abbf 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -2924,6 +2924,9 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - * - __u8 - ``chroma_format_idc`` - + * - __u8 + - ``sps_max_sub_layers_minus1`` + - * - __u64 - ``flags`` - See :ref:`Sequence Parameter Set Flags <hevc_sps_flags>` diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h index b4cb2ef02f17..b2d296b77653 100644 --- a/include/media/hevc-ctrls.h +++ b/include/media/hevc-ctrls.h @@ -75,8 +75,7 @@ struct v4l2_ctrl_hevc_sps { __u8 num_short_term_ref_pic_sets; __u8 num_long_term_ref_pics_sps; __u8 chroma_format_idc; - - __u8 padding; + __u8 sps_max_sub_layers_minus1; __u64 flags; };
sps_max_sub_layers_minus1 is needed if the driver wishes to determine whether or not a frame might be used for reference. Signed-off-by: John Cox <jc@kynesim.co.uk> --- This is useful to the Pi H265 decoder as it allows it to only create and store MV info for frames that need to. Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 3 +++ include/media/hevc-ctrls.h | 3 +-- 2 files changed, 4 insertions(+), 2 deletions(-)