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bytestream2: set the reader to the end when reading more than available

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This prevents possible infinite loops with the calling code along the
lines of while (bytestream2_get_bytes_left()) { ... }, where the reader
does not advance.

CC: libav-stable@libav.org
(cherry picked from commit 86eee85dad)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Anton Khirnov 2015-07-10 09:31:24 +02:00 committed by Michael Niedermayer
parent 0df814cf97
commit 7db809a373
1 changed files with 3 additions and 1 deletions
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4
libavcodec/bytestream.h
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@ -71,8 +71,10 @@ static av_always_inline type bytestream2_get_ ## name ## u(GetByteContext *g) \
} \ } \
static av_always_inline type bytestream2_get_ ## name(GetByteContext *g) \ static av_always_inline type bytestream2_get_ ## name(GetByteContext *g) \
{ \ { \
if (g->buffer_end - g->buffer < bytes) \ if (g->buffer_end - g->buffer < bytes) { \
g->buffer = g->buffer_end; \
return 0; \ return 0; \
} \
return bytestream2_get_ ## name ## u(g); \ return bytestream2_get_ ## name ## u(g); \
} \ } \
static av_always_inline type bytestream2_peek_ ## name(GetByteContext *g) \ static av_always_inline type bytestream2_peek_ ## name(GetByteContext *g) \