#include "avformat.h"
#include "internal.h"
+typedef struct BRSTMCoeffOffset {
+ uint8_t channel;
+ uint32_t offset;
+} BRSTMCoeffOffset;
+
typedef struct BRSTMDemuxContext {
uint32_t block_size;
uint32_t block_count;
uint32_t data_start;
uint8_t *table;
uint8_t *adpc;
+ BRSTMCoeffOffset offsets[256];
int little_endian;
} BRSTMDemuxContext;
return 0;
}
+static int sort_offsets(const void *a, const void *b)
+{
+ const BRSTMCoeffOffset *s1 = a;
+ const BRSTMCoeffOffset *s2 = b;
+ return FFDIFFSIGN(s1->offset, s2->offset);
+}
+
static av_always_inline unsigned int read16(AVFormatContext *s)
{
BRSTMDemuxContext *b = s->priv_data;
if (toffset > size)
return AVERROR_INVALIDDATA;
+ if (!bfstm) {
+ avio_skip(s->pb, pos + toffset - avio_tell(s->pb) - 8LL * (st->codecpar->channels + 1));
+ for (ch = 0; ch < st->codecpar->channels; ch++) {
+ avio_skip(s->pb, 4);
+ b->offsets[ch].channel = ch;
+ b->offsets[ch].offset = read32(s);
+ }
+
+ qsort(b->offsets, st->codecpar->channels, sizeof(*b->offsets), sort_offsets);
+ }
+
avio_skip(s->pb, pos + toffset - avio_tell(s->pb));
b->table = av_mallocz(32 * st->codecpar->channels);
if (!b->table)
return AVERROR(ENOMEM);
for (ch = 0; ch < st->codecpar->channels; ch++) {
+ if (!bfstm)
+ avio_skip(s->pb, pos + 16LL + b->offsets[ch].offset - avio_tell(s->pb));
+
if (avio_read(s->pb, b->table + ch * 32, 32) != 32) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
- avio_skip(s->pb, bfstm ? 14 : 24);
+
+ if (bfstm)
+ avio_skip(s->pb, 14);
}
}