fix probetest failure
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
static int bmp_probe(AVProbeData *p)
{
const uint8_t *b = p->buf;
+ int ihsize;
- if (AV_RB16(b) == 0x424d)
- if (!AV_RN32(b + 6)) {
- return AVPROBE_SCORE_EXTENSION + 1;
- } else {
- return AVPROBE_SCORE_EXTENSION / 4;
- }
+ if (AV_RB16(b) != 0x424d)
+ return 0;
+
+ ihsize = AV_RL32(b+14);
+ if (ihsize < 12 || ihsize > 255)
+ return 0;
+
+ if (!AV_RN32(b + 6)) {
+ return AVPROBE_SCORE_EXTENSION + 1;
+ } else {
+ return AVPROBE_SCORE_EXTENSION / 4;
+ }
return 0;
}