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avcodec/h264: Allow partial escaping

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Fixes Ticket3923

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-09-07 01:42:28 +02:00
parent c2430304df
commit 033a5334ba
1 changed files with 2 additions and 2 deletions
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4
libavcodec/h264.c
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@ -248,7 +248,7 @@ const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
#define STARTCODE_TEST \
if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
if (src[i + 2] != 3) { \
if (src[i + 2] != 3 && src[i + 2] != 0) { \
/* startcode, so we must be past the end */ \
length = i; \
} \
@ -320,7 +320,7 @@ const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
if (src[si + 2] > 3) {
dst[di++] = src[si++];
dst[di++] = src[si++];
} else if (src[si] == 0 && src[si + 1] == 0) {
} else if (src[si] == 0 && src[si + 1] == 0 && src[si + 2] != 0) {
if (src[si + 2] == 3) { // escape
dst[di++] = 0;
dst[di++] = 0;