ffmpeg | branch: master | Jan Ekström <jee...@gmail.com> | Mon Jan 9 22:49:49 2023 +0200| [f4bebc0c34b6aeac011adfdc6fdbbfc939ac5a64] | committer: Jan Ekström
avcodec/cbs_{h2645,sei}: add support for Ambient Viewing Environment SEI Defined by H.274, this SEI message is utilized by iPhones to save the nominal ambient viewing environment for the display of recorded HDR content. > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f4bebc0c34b6aeac011adfdc6fdbbfc939ac5a64 --- libavcodec/cbs_h2645.c | 6 ++++++ libavcodec/cbs_sei.h | 6 ++++++ libavcodec/cbs_sei_syntax_template.c | 17 +++++++++++++++++ 3 files changed, 29 insertions(+) diff --git a/libavcodec/cbs_h2645.c b/libavcodec/cbs_h2645.c index 4ee06003c3..80e48829af 100644 --- a/libavcodec/cbs_h2645.c +++ b/libavcodec/cbs_h2645.c @@ -1500,6 +1500,12 @@ static const SEIMessageTypeDescriptor cbs_sei_common_types[] = { sizeof(SEIRawAlternativeTransferCharacteristics), SEI_MESSAGE_RW(sei, alternative_transfer_characteristics), }, + { + SEI_TYPE_AMBIENT_VIEWING_ENVIRONMENT, + 1, 0, + sizeof(SEIRawAmbientViewingEnvironment), + SEI_MESSAGE_RW(sei, ambient_viewing_environment), + }, SEI_MESSAGE_TYPE_END, }; diff --git a/libavcodec/cbs_sei.h b/libavcodec/cbs_sei.h index c7a7a95be0..1c327a4689 100644 --- a/libavcodec/cbs_sei.h +++ b/libavcodec/cbs_sei.h @@ -65,6 +65,12 @@ typedef struct SEIRawAlternativeTransferCharacteristics { uint8_t preferred_transfer_characteristics; } SEIRawAlternativeTransferCharacteristics; +typedef struct SEIRawAmbientViewingEnvironment { + uint32_t ambient_illuminance; + uint16_t ambient_light_x; + uint16_t ambient_light_y; +} SEIRawAmbientViewingEnvironment; + typedef struct SEIRawMessage { uint32_t payload_type; uint32_t payload_size; diff --git a/libavcodec/cbs_sei_syntax_template.c b/libavcodec/cbs_sei_syntax_template.c index 0ef7b42ed9..6a7cc36dda 100644 --- a/libavcodec/cbs_sei_syntax_template.c +++ b/libavcodec/cbs_sei_syntax_template.c @@ -144,6 +144,23 @@ static int FUNC(alternative_transfer_characteristics) return 0; } +static int FUNC(ambient_viewing_environment) + (CodedBitstreamContext *ctx, RWContext *rw, + SEIRawAmbientViewingEnvironment *current, + SEIMessageState *state) +{ + static const uint16_t max_ambient_light_value = 50000; + int err; + + HEADER("Ambient Viewing Environment"); + + u(32, ambient_illuminance, 1, MAX_UINT_BITS(32)); + u(16, ambient_light_x, 0, max_ambient_light_value); + u(16, ambient_light_y, 0, max_ambient_light_value); + + return 0; +} + static int FUNC(message)(CodedBitstreamContext *ctx, RWContext *rw, SEIRawMessage *current) { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".