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avcodec/mlp_parser: mark sync frames as key frames

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2019-12-12 09:32:07 -03:00
parent 29f8d4e947
commit aedffc0b22
1 changed files with 6 additions and 0 deletions
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6
libavcodec/mlp_parser.c
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@ -61,6 +61,8 @@ static int mlp_parse(AVCodecParserContext *s,
int ret; int ret;
int i, p = 0; int i, p = 0;
s->key_frame = 0;
*poutbuf_size = 0; *poutbuf_size = 0;
if (buf_size == 0) if (buf_size == 0)
return 0; return 0;
@ -136,6 +138,8 @@ static int mlp_parse(AVCodecParserContext *s,
* access unit header and all the 2- or 4-byte substream headers. */ * access unit header and all the 2- or 4-byte substream headers. */
// Only check when this isn't a sync frame - syncs have a checksum. // Only check when this isn't a sync frame - syncs have a checksum.
s->key_frame = 0;
parity_bits = 0; parity_bits = 0;
for (i = -1; i < mp->num_substreams; i++) { for (i = -1; i < mp->num_substreams; i++) {
parity_bits ^= buf[p++]; parity_bits ^= buf[p++];
@ -159,6 +163,8 @@ static int mlp_parse(AVCodecParserContext *s,
if (ff_mlp_read_major_sync(avctx, &mh, &gb) < 0) if (ff_mlp_read_major_sync(avctx, &mh, &gb) < 0)
goto lost_sync; goto lost_sync;
s->key_frame = 1;
avctx->bits_per_raw_sample = mh.group1_bits; avctx->bits_per_raw_sample = mh.group1_bits;
if (avctx->bits_per_raw_sample > 16) if (avctx->bits_per_raw_sample > 16)
avctx->sample_fmt = AV_SAMPLE_FMT_S32; avctx->sample_fmt = AV_SAMPLE_FMT_S32;