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Merge commit '75644335b9'

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* commit '75644335b9':
  lavc: Move start code finding to utils.c

Conflicts:
	configure
	libavcodec/mpegvideo.c
	libavcodec/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-03-26 13:22:48 +01:00
commit 2cdedcbcea
3 changed files with 36 additions and 36 deletions
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34
libavcodec/utils.c
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@ -41,6 +41,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "libavutil/opt.h"
#include "mpegvideo.h"
#include "thread.h"
#include "frame_thread_encoder.h"
#include "internal.h"
@ -3098,3 +3099,36 @@ int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
avctx->extradata_size = buf->len;
return 0;
}
const uint8_t *avpriv_mpv_find_start_code(const uint8_t *av_restrict p,
const uint8_t *end,
uint32_t *av_restrict state)
{
int i;
assert(p <= end);
if (p >= end)
return end;
for (i = 0; i < 3; i++) {
uint32_t tmp = *state << 8;
*state = tmp + *(p++);
if (tmp == 0x100 || p == end)
return p;
}
while (p < end) {
if (p[-1] > 1 ) p += 3;
else if (p[-2] ) p += 2;
else if (p[-3]|(p[-1]-1)) p++;
else {
p++;
break;
}
}
p = FFMIN(p, end) - 4;
*state = AV_RB32(p);
return p + 4;
}