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avcodec/utils: add ff_alloc_timecode_metadata_av1()

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This commit is contained in:
Michael Niedermayer
2026-07-26 23:07:35 +02:00
committed by michaelni
parent a290dec0bf
commit 5589dfd9bc
2 changed files with 34 additions and 0 deletions
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3
libavcodec/internal.h
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@@ -184,6 +184,9 @@ int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec);
int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len,
void **data, size_t *sei_size);
int ff_alloc_timecode_metadata_av1(const AVFrame *frame, AVRational rate,
void **data, size_t *size);
/**
* Get an estimated video bitrate based on frame size, frame rate and coded
* bits per pixel.

31
libavcodec/utils.c
View File

@@ -1041,6 +1041,37 @@ int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_l
return 0;
}
int ff_alloc_timecode_metadata_av1(const AVFrame *frame, AVRational rate,
void **data, size_t *size)
{
AVFrameSideData *sd = NULL;
PutBitContext pb;
uint32_t *tc;
if (frame)
sd = av_frame_get_side_data(frame, AV_FRAME_DATA_S12M_TIMECODE);
*data = NULL;
if (!sd)
return 0;
tc = (uint32_t*)sd->data;
if (!(tc[0] & 3)) // num_clock_ts
return 0;
*size = 5;
*data = av_mallocz(*size);
if (!*data)
return AVERROR(ENOMEM);
init_put_bits(&pb, *data, *size);
put_timecode_fields(&pb, rate, tc[1]);
put_bits(&pb, 5, 1); // time_offset_length
put_bits(&pb, 1, 0); // time_offset_value
flush_put_bits(&pb);
return 0;
}
int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
{
AVRational framerate = avctx->framerate;