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| author | James Almer <jamrial@gmail.com> | 2019-06-20 22:21:26 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2019-07-20 11:28:09 -0300 |
| commit | e460dcc832e911982e5cf143ce7ff52c95547ab0 (patch) | |
| tree | 04344d091f8b492c129f338b5b8b8946b93904a7 /libavcodec/cbs_h265_syntax_template.c | |
| parent | d4035ca849bdb90e95c87e2737a99ea657be0716 (diff) | |
| download | ffmpeg-streaming-e460dcc832e911982e5cf143ce7ff52c95547ab0.zip ffmpeg-streaming-e460dcc832e911982e5cf143ce7ff52c95547ab0.tar.gz | |
avcodec/cbs_h265: add support for Alpha Channel Info SEI messages
As defined in sections F.14.2.8 and F.14.3.8
Reviewed-by: Mark Thompson <sw@jkqxz.net>
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavcodec/cbs_h265_syntax_template.c')
| -rw-r--r-- | libavcodec/cbs_h265_syntax_template.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libavcodec/cbs_h265_syntax_template.c b/libavcodec/cbs_h265_syntax_template.c index f279d28..5457092 100644 --- a/libavcodec/cbs_h265_syntax_template.c +++ b/libavcodec/cbs_h265_syntax_template.c @@ -2028,6 +2028,34 @@ static int FUNC(sei_alternative_transfer_characteristics)(CodedBitstreamContext return 0; } +static int FUNC(sei_alpha_channel_info)(CodedBitstreamContext *ctx, + RWContext *rw, + H265RawSEIAlphaChannelInfo *current) +{ + int err, length; + + HEADER("Alpha Channel Information"); + + flag(alpha_channel_cancel_flag); + if (!current->alpha_channel_cancel_flag) { + ub(3, alpha_channel_use_idc); + ub(3, alpha_channel_bit_depth_minus8); + length = current->alpha_channel_bit_depth_minus8 + 9; + ub(length, alpha_transparent_value); + ub(length, alpha_opaque_value); + flag(alpha_channel_incr_flag); + flag(alpha_channel_clip_flag); + if (current->alpha_channel_clip_flag) + flag(alpha_channel_clip_type_flag); + } else { + infer(alpha_channel_use_idc, 2); + infer(alpha_channel_incr_flag, 0); + infer(alpha_channel_clip_flag, 0); + } + + return 0; +} + static int FUNC(sei_payload)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSEIPayload *current, int prefix) { @@ -2080,6 +2108,7 @@ static int FUNC(sei_payload)(CodedBitstreamContext *ctx, RWContext *rw, SEI_TYPE_N(CONTENT_LIGHT_LEVEL_INFO, 1, 0, content_light_level); SEI_TYPE_N(ALTERNATIVE_TRANSFER_CHARACTERISTICS, 1, 0, alternative_transfer_characteristics); + SEI_TYPE_N(ALPHA_CHANNEL_INFO, 1, 0, alpha_channel_info); #undef SEI_TYPE default: |
