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Add .bgm extension to SVS [Unlimited Saga (PS2)]

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bnnm 2024-04-13 20:24:18 +02:00
parent f25eacdb52
commit dc5fe71c21
1 changed files with 17 additions and 16 deletions
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33
src/meta/svs.c
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@ -3,40 +3,41 @@
/* SVS - SeqVagStream from Square games [Unlimited Saga (PS2) music] */ /* SVS - SeqVagStream from Square games [Unlimited Saga (PS2) music] */
VGMSTREAM * init_vgmstream_svs(STREAMFILE *streamFile) { VGMSTREAM* init_vgmstream_svs(STREAMFILE* sf) {
VGMSTREAM * vgmstream = NULL; VGMSTREAM* vgmstream = NULL;
off_t start_offset; off_t start_offset;
int channel_count, loop_flag, pitch; int channels, loop_flag, pitch;
/* checks */ /* checks */
/* .svs: header id (probably ok like The Bouncer's .vs) */ if (!is_id32be(0x00,sf, "SVS\0"))
if (!check_extensions(streamFile, "svs")) return NULL;
goto fail; /* .bgm: from debug strings (music%3.3u.bgm)
if (read_32bitBE(0x00,streamFile) != 0x53565300) /* "SVS\0" */ * .svs: header id (probably ok like The Bouncer's .vs, there are also refs to "vas") */
goto fail; if (!check_extensions(sf, "bgm,svs"))
return NULL;
/* 0x04: flags (1=stereo?, 2=loop) */ /* 0x04: flags (1=stereo?, 2=loop) */
pitch = read_32bitLE(0x10,streamFile); /* usually 0x1000 = 48000 */ pitch = read_s32le(0x10,sf); /* usually 0x1000 = 48000 */
/* 0x14: volume? */ /* 0x14: volume? */
/* 0x18: file id (may be null) */ /* 0x18: file id (may be null) */
/* 0x1c: null */ /* 0x1c: null */
loop_flag = (read_32bitLE(0x08,streamFile) > 0); /* loop start frame, min is 1 */ loop_flag = (read_s32le(0x08,sf) > 0); /* loop start frame, min is 1 */
channel_count = 2; channels = 2;
start_offset = 0x20; start_offset = 0x20;
/* build the VGMSTREAM */ /* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag); vgmstream = allocate_vgmstream(channels, loop_flag);
if (!vgmstream) goto fail; if (!vgmstream) goto fail;
vgmstream->meta_type = meta_SVS; vgmstream->meta_type = meta_SVS;
vgmstream->sample_rate = round10((48000 * pitch) / 4096); /* music = ~44100, ambience = 48000 (rounding makes more sense but not sure) */ vgmstream->sample_rate = round10((48000 * pitch) / 4096); /* music = ~44100, ambience = 48000 (rounding makes more sense but not sure) */
vgmstream->num_samples = ps_bytes_to_samples(get_streamfile_size(streamFile) - start_offset, channel_count); vgmstream->num_samples = ps_bytes_to_samples(get_streamfile_size(sf) - start_offset, channels);
if (loop_flag) { if (loop_flag) {
vgmstream->loop_start_sample = read_32bitLE(0x08,streamFile) * 28; /* frame count (0x10*ch) */ vgmstream->loop_start_sample = read_s32le(0x08,sf) * 28; /* frame count (0x10*ch) */
vgmstream->loop_end_sample = read_32bitLE(0x0c,streamFile) * 28; /* frame count, (not exact num_samples when no loop) */ vgmstream->loop_end_sample = read_s32le(0x0c,sf) * 28; /* frame count, (not exact num_samples when no loop) */
/* start/end on the same frame rarely happens too (ex. file_id 63 SVS), perhaps loop should be +1 */ /* start/end on the same frame rarely happens too (ex. file_id 63 SVS), perhaps loop should be +1 */
} }
@ -44,7 +45,7 @@ VGMSTREAM * init_vgmstream_svs(STREAMFILE *streamFile) {
vgmstream->layout_type = layout_interleave; vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x10; vgmstream->interleave_block_size = 0x10;
if (!vgmstream_open_stream(vgmstream,streamFile,start_offset)) if (!vgmstream_open_stream(vgmstream,sf,start_offset))
goto fail; goto fail;
return vgmstream; return vgmstream;