ChannelParams channel_params[MAX_CHANNELS];
+ int matrix_changed;
+ int filter_changed[MAX_CHANNELS][NUM_FILTERS];
+
int8_t noise_buffer[MAX_BLOCKSIZE_POW2];
int8_t bypassed_lsbs[MAX_BLOCKSIZE][MAX_CHANNELS];
int32_t sample_buffer[MAX_BLOCKSIZE][MAX_CHANNELS+2];
// Filter is 0 for FIR, 1 for IIR.
assert(filter < 2);
+ m->filter_changed[channel][filter]++;
+
order = get_bits(gbp, 4);
if (order > max_order) {
av_log(m->avctx, AV_LOG_ERROR,
unsigned int mat, ch;
s->num_primitive_matrices = get_bits(gbp, 4);
+ m->matrix_changed++;
for (mat = 0; mat < s->num_primitive_matrices; mat++) {
int frac_bits, max_chan;
SubStream *s = &m->substream[substr];
init_get_bits(&gb, buf, substream_data_len[substr] * 8);
+ m->matrix_changed = 0;
+ memset(m->filter_changed, 0, sizeof(m->filter_changed));
+
s->blockpos = 0;
do {
+ unsigned int ch;
+
if (get_bits1(&gb)) {
if (get_bits1(&gb)) {
/* A restart header should be present. */
goto next_substr;
}
+ if (m->matrix_changed > 1) {
+ av_log(m->avctx, AV_LOG_ERROR, "Matrices may change only once per access unit.\n");
+ goto next_substr;
+ }
+ for (ch = 0; ch < s->max_channel; ch++)
+ if (m->filter_changed[ch][FIR] > 1 ||
+ m->filter_changed[ch][IIR] > 1) {
+ av_log(m->avctx, AV_LOG_ERROR, "Filters may change only once per access unit.\n");
+ goto next_substr;
+ }
+
if (!s->restart_seen) {
goto next_substr;
}