for (y = 0; y < height; y++)
memset(t1->data[y], 0, width*sizeof(int));
- ff_mqc_initdec(&t1->mqc, cblk->data);
cblk->data[cblk->length] = 0xff;
cblk->data[cblk->length+1] = 0xff;
+ ff_mqc_initdec(&t1->mqc, cblk->data);
while(passno--){
switch(pass_t){
// the comment is ignored
s->buf += len - 2; break;
default:
- av_log(s->avctx, AV_LOG_ERROR, "unsupported marker 0x%.4X at pos 0x%x\n", marker, s->buf - s->buf_start - 4);
+ av_log(s->avctx, AV_LOG_ERROR, "unsupported marker 0x%.4X at pos 0x%tx\n", marker, s->buf - s->buf_start - 4);
s->buf += len - 2; break;
}
if (s->buf - oldbuf != len || ret){
static int jp2_find_codestream(J2kDecoderContext *s)
{
- int32_t atom_size;
+ uint32_t atom_size;
int found_codestream = 0, search_range = 10;
// skip jpeg2k signature atom
s->buf += 12;
- while(!found_codestream && search_range) {
+ while(!found_codestream && search_range && s->buf_end - s->buf >= 8) {
atom_size = AV_RB32(s->buf);
if(AV_RB32(s->buf + 4) == JP2_CODESTREAM) {
found_codestream = 1;
s->buf += 8;
} else {
+ if (s->buf_end - s->buf < atom_size)
+ return 0;
s->buf += atom_size;
search_range--;
}
return AVERROR(EINVAL);
// check if the image is in jp2 format
- if((AV_RB32(s->buf) == 12) && (AV_RB32(s->buf + 4) == JP2_SIG_TYPE) &&
+ if(s->buf_end - s->buf >= 12 &&
+ (AV_RB32(s->buf) == 12) && (AV_RB32(s->buf + 4) == JP2_SIG_TYPE) &&
(AV_RB32(s->buf + 8) == JP2_SIG_VALUE)) {
if(!jp2_find_codestream(s)) {
av_log(avctx, AV_LOG_ERROR, "couldn't find jpeg2k codestream atom\n");
decode_end,
decode_frame,
.capabilities = CODEC_CAP_EXPERIMENTAL,
+ .long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
.pix_fmts =
(enum PixelFormat[]) {PIX_FMT_GRAY8, PIX_FMT_RGB24, -1}
};