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ffmpeg
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Merge commit '8411baf6f0a42bdd61f00f34aa9efec7e138b5f2' 

* commit '8411baf6f0a42bdd61f00f34aa9efec7e138b5f2':
  dca_parser: Handle changes in DCA frame size

Conflicts:
	libavcodec/dca_parser.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-18 10:39:34 +02:00
parent 2dd38a1d48 8411baf6f0
commit f9ccdcb6ce
1 changed files with 8 additions and 7 deletions
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15
libavcodec/dca_parser.c
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@ -61,6 +61,7 @@ static int dca_find_frame_end(DCAParseContext * pc1, const uint8_t * buf,
if (!pc1->lastmarker || state == pc1->lastmarker || pc1->lastmarker == DCA_HD_MARKER) {
start_found = 1;
pc1->lastmarker = state;
i++;
break;
}
}
@ -75,10 +76,6 @@ static int dca_find_frame_end(DCAParseContext * pc1, const uint8_t * buf,
if (IS_MARKER(state, i, buf, buf_size) && (state == pc1->lastmarker || pc1->lastmarker == DCA_HD_MARKER)) {
if(pc1->framesize > pc1->size)
continue;
// We have to check that we really read a full frame here, and that it isn't a pure HD frame, because their size is not constant.
if(!pc1->framesize && state == pc1->lastmarker && state != DCA_HD_MARKER){
pc1->framesize = pc1->hd_pos ? pc1->hd_pos : pc1->size;
}
pc->frame_start_found = 0;
pc->state = -1;
pc1->size = 0;
@ -100,7 +97,7 @@ static av_cold int dca_parse_init(AVCodecParserContext * s)
}
static int dca_parse_params(const uint8_t *buf, int buf_size, int *duration,
int *sample_rate)
int *sample_rate, int *framesize)
{
GetBitContext gb;
uint8_t hdr[12 + FF_INPUT_BUFFER_PADDING_SIZE] = { 0 };
@ -120,7 +117,11 @@ static int dca_parse_params(const uint8_t *buf, int buf_size, int *duration,
return AVERROR_INVALIDDATA;
*duration = 256 * (sample_blocks / 8);
skip_bits(&gb, 20);
*framesize = get_bits(&gb, 14) + 1;
if (*framesize < 95)
return AVERROR_INVALIDDATA;
skip_bits(&gb, 6);
sr_code = get_bits(&gb, 4);
*sample_rate = avpriv_dca_sample_rates[sr_code];
if (*sample_rate == 0)
@ -151,7 +152,7 @@ static int dca_parse(AVCodecParserContext * s,
}
/* read the duration and sample rate from the frame header */
if (!dca_parse_params(buf, buf_size, &duration, &sample_rate)) {
if (!dca_parse_params(buf, buf_size, &duration, &sample_rate, &pc1->framesize)) {
s->duration = duration;
avctx->sample_rate = sample_rate;
} else