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flac_parser: fix fifo ptr wrap check

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-09-22 04:40:10 +02:00
parent 1b1b902e2c
commit 8d45c001a8
1 changed files with 2 additions and 1 deletions
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3
libavcodec/flac_parser.c
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@ -606,10 +606,11 @@ static int flac_parse(AVCodecParserContext *s, AVCodecContext *avctx,
/* restore the state pre-padding */
if (fpc->end_padded) {
int warp = fpc->fifo_buf->wptr - fpc->fifo_buf->buffer < MAX_FRAME_HEADER_SIZE;
/* HACK: drain the tail of the fifo */
fpc->fifo_buf->wptr -= MAX_FRAME_HEADER_SIZE;
fpc->fifo_buf->wndx -= MAX_FRAME_HEADER_SIZE;
if (fpc->fifo_buf->wptr < 0) {
if (warp) {
fpc->fifo_buf->wptr += fpc->fifo_buf->end -
fpc->fifo_buf->buffer;
}