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h2645_parse: allow partial escaping

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This ports the fix from 033a533 to the new parser module in prepartion
of using it for the h264 decoder.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Hendrik Leppkes 2016-05-06 16:20:13 +02:00 committed by Derek Buitenhuis
parent c802389393
commit 9cc1ab63ac
1 changed files with 2 additions and 2 deletions
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4
libavcodec/h2645_parse.c
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@ -38,7 +38,7 @@ int ff_h2645_extract_rbsp(const uint8_t *src, int length,
nal->skipped_bytes = 0; nal->skipped_bytes = 0;
#define STARTCODE_TEST \ #define STARTCODE_TEST \
if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \ 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 */ \ /* startcode, so we must be past the end */ \
length = i; \ length = i; \
} \ } \
@ -103,7 +103,7 @@ int ff_h2645_extract_rbsp(const uint8_t *src, int length,
if (src[si + 2] > 3) { if (src[si + 2] > 3) {
dst[di++] = src[si++]; dst[di++] = src[si++];
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 if (src[si + 2] == 3) { // escape
dst[di++] = 0; dst[di++] = 0;
dst[di++] = 0; dst[di++] = 0;