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mjpegdec: make sure we dont interpret things after the bitstream buffer as resync marker

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-09-17 01:32:08 +02:00
parent d93a448be3
commit b002184fa1
1 changed files with 2 additions and 2 deletions
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4
libavcodec/mjpegdec.c
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@ -898,9 +898,9 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i
if (s->restart_interval && show_bits(&s->gb, i) == (1<<i)-1){ /* skip RSTn */
int pos= get_bits_count(&s->gb);
align_get_bits(&s->gb);
while(show_bits(&s->gb, 8) == 0xFF)
while(get_bits_count(&s->gb) < s->gb.size_in_bits && show_bits(&s->gb, 8) == 0xFF)
skip_bits(&s->gb, 8);
if((get_bits(&s->gb, 8)&0xF8) == 0xD0){
if(get_bits_count(&s->gb) < s->gb.size_in_bits && (get_bits(&s->gb, 8)&0xF8) == 0xD0){
for (i=0; i<nb_components; i++) /* reset dc */
s->last_dc[i] = 1024;
}else{