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avcodec/vc1_parser: Check init_get_bits8() 

Addresses Coverity issue #1441935.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-05-17 22:14:56 +02:00
parent 95937d6316
commit a7e506fcd8
1 changed files with 4 additions and 1 deletions
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5
libavcodec/vc1_parser.c
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@ -26,6 +26,7 @@
*/
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "parser.h"
#include "vc1.h"
#include "get_bits.h"
@ -66,7 +67,9 @@ static void vc1_extract_header(AVCodecParserContext *s, AVCodecContext *avctx,
GetBitContext gb;
int ret;
vpc->v.s.avctx = avctx;
init_get_bits8(&gb, buf, buf_size);
ret = init_get_bits8(&gb, buf, buf_size);
av_assert1(ret >= 0); // buf_size is bounded by UNESCAPED_THRESHOLD
switch (vpc->prev_start_code) {
case VC1_CODE_SEQHDR & 0xFF:
ff_vc1_decode_sequence_header(avctx, &vpc->v, &gb);