#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 last_block_size;
uint32_t last_block_samples;
uint32_t data_start;
- uint8_t *table;
+ uint8_t table[256 * 32];
uint8_t *adpc;
+ BRSTMCoeffOffset offsets[256];
int little_endian;
} BRSTMDemuxContext;
{
BRSTMDemuxContext *b = s->priv_data;
- av_freep(&b->table);
av_freep(&b->adpc);
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);
}
}
av_log(s, AV_LOG_ERROR, "adpcm_thp requires ADPC chunk, but none was found.\n");
return AVERROR_INVALIDDATA;
}
- if (!b->table) {
- b->table = av_mallocz(32 * par->channels);
- if (!b->table)
- return AVERROR(ENOMEM);
- }
if (size > (INT_MAX - 32 - 4) ||
(32 + 4 + size) > (INT_MAX / par->channels) ||
return 0;
}
-AVInputFormat ff_brstm_demuxer = {
+const AVInputFormat ff_brstm_demuxer = {
.name = "brstm",
.long_name = NULL_IF_CONFIG_SMALL("BRSTM (Binary Revolution Stream)"),
.priv_data_size = sizeof(BRSTMDemuxContext),
.extensions = "brstm",
};
-AVInputFormat ff_bfstm_demuxer = {
+const AVInputFormat ff_bfstm_demuxer = {
.name = "bfstm",
.long_name = NULL_IF_CONFIG_SMALL("BFSTM (Binary Cafe Stream)"),
.priv_data_size = sizeof(BRSTMDemuxContext),