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support opusww > 8 channels when mapping type is 255

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Naomi Ahmed 2022-10-24 14:54:56 +01:00
parent 49af2cea7d
commit 4ec2704496
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2 changed files with 13 additions and 6 deletions
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2
src/coding/coding.h
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@ -638,7 +638,7 @@ typedef struct {
/* multichannel-only */
int coupled_count;
int stream_count;
int channel_mapping[8];
int channel_mapping[255];
/* frame table */
off_t table_offset;
int table_count;

11
src/meta/wwise.c
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@ -538,7 +538,7 @@ VGMSTREAM* init_vgmstream_wwise_bnk(STREAMFILE* sf, int* p_prefetch) {
if (ww.block_size != 0 || ww.bits_per_sample != 0) goto fail;
if (!ww.seek_offset) goto fail;
if (ww.channels > 8) goto fail; /* mapping not defined */
if (ww.channels > 255) goto fail; /* opus limit */
cfg.channels = ww.channels;
cfg.table_offset = ww.seek_offset;
@ -550,6 +550,7 @@ VGMSTREAM* init_vgmstream_wwise_bnk(STREAMFILE* sf, int* p_prefetch) {
cfg.skip = read_u16(ww.fmt_offset + 0x20, sf);
/* 0x22: codec version */
mapping = read_u8(ww.fmt_offset + 0x23, sf);
if (mapping == 1 && ww.channels > 8) goto fail; /* mapping not defined */
if (read_u8(ww.fmt_offset + 0x22, sf) != 1)
goto fail;
@ -562,7 +563,7 @@ VGMSTREAM* init_vgmstream_wwise_bnk(STREAMFILE* sf, int* p_prefetch) {
}
/* AK does some wonky implicit config for multichannel */
if (mapping == 1 && ww.channel_type == 1) { /* only allowed values ATM, set when >2ch */
if (mapping > 0 && ww.channel_type == 1) { /* only allowed values ATM, set when >2ch */
static const int8_t mapping_matrix[8][8] = {
{ 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 1, 0, 0, 0, 0, 0, 0, },
@ -589,10 +590,16 @@ VGMSTREAM* init_vgmstream_wwise_bnk(STREAMFILE* sf, int* p_prefetch) {
/* total number internal OPUS streams (should be >0) */
cfg.stream_count = ww.channels - cfg.coupled_count;
if (mapping == 1) { // ak remapping
/* channel assignments */
for (i = 0; i < ww.channels; i++) {
cfg.channel_mapping[i] = mapping_matrix[ww.channels - 1][i];
}
} else { // linear
for (i = 0; i < ww.channels; i++) {
cfg.channel_mapping[i] = i;
}
}
}
/* Wwise Opus saves all frame sizes in the seek table */