len = get_bits(&s->gb, 16) - 2;
while (len >= 65) {
- /* only 8 bit precision handled */
- if (get_bits(&s->gb, 4) != 0) {
- av_log(s->avctx, AV_LOG_ERROR, "dqt: 16bit precision\n");
- return -1;
+ int pr = get_bits(&s->gb, 4);
+ if (pr > 1) {
+ av_log(s->avctx, AV_LOG_ERROR, "dqt: invalid precision\n");
+ return AVERROR_INVALIDDATA;
}
index = get_bits(&s->gb, 4);
if (index >= 4)
/* read quant table */
for (i = 0; i < 64; i++) {
j = s->scantable.permutated[i];
- s->quant_matrixes[index][j] = get_bits(&s->gb, 8);
+ s->quant_matrixes[index][j] = get_bits(&s->gb, pr ? 16 : 8);
}
// XXX FIXME finetune, and perhaps add dc too
i = 8 + ((-get_bits_count(&s->gb)) & 7);
/* skip RSTn */
- if (show_bits(&s->gb, i) == (1 << i) - 1) {
+ if (s->restart_count == 0 && show_bits(&s->gb, i) == (1 << i) - 1) {
int pos = get_bits_count(&s->gb);
align_get_bits(&s->gb);
while (get_bits_left(&s->gb) >= 8 && show_bits(&s->gb, 8) == 0xFF)
if (s->interlaced && s->bottom_field)
data += linesize >> 1;
+ s->restart_count = 0;
+
for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
uint8_t *ptr = data + (mb_y * linesize * 8 >> s->avctx->lowres);
int block_idx = mb_y * s->block_stride[c];