105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* sadl - from DS games with Procyon Studio audio driver [Professor Layton (DS), Soma Bringer (DS)] */
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VGMSTREAM* init_vgmstream_sadl(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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int channels, loop_flag;
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off_t start_offset;
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uint8_t flags;
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uint32_t loop_start, data_size;
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/* checks */
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if (!check_extensions(sf, "sad"))
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goto fail;
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if (read_u32be(0x00,sf) != 0x7361646c) /* "sadl" */
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goto fail;
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/* 04: null */
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/* 08: data size, or null in later files */
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/* 0c: version? (x0410=Luminous Arc, 0x0411=Layton, 0x0415=rest) */
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/* 0e: file id (for .sad packed in .spd) */
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/* 14: name related? */
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/* 20: short filename (may be null or nor match full filename) */
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/* 30: flags? (0/1/2) */
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loop_flag = read_u8(0x31,sf);
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channels = read_u8(0x32,sf);
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flags = read_u8(0x33,sf);
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/* 34: flags? */
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/* 38: flags? */
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/* 3c: null? */
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data_size = read_u32le(0x40,sf); //?
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start_offset = read_u32le(0x48,sf); /* usually 0x100, 0xc0 in LA */
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/* 4c: start offset again or 0x40 in LA */
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/* 50: size or samples? */
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loop_start = read_u32le(0x54,sf); //?
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/* others: sizes/samples/flags? */
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data_size -= start_offset;
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loop_start -= start_offset;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channels, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->meta_type = meta_SADL;
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switch (flags & 6) { /* possibly > 1? (0/1/2) */
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case 4:
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vgmstream->sample_rate = 32728;
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break;
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case 2: /* Layton */
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case 0: /* Luminous Arc (DS) */
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vgmstream->sample_rate = 16364;
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break;
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default:
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goto fail;
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}
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x10;
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switch(flags & 0xf0) { /* possibly >> 6? (0/1/2) */
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case 0x00: /* Luminous Arc (DS) (non-int IMA? all files are mono though) */
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case 0x70: /* Ni no Kuni (DS), Professor Layton and the Curious Village (DS), Soma Bringer (DS) */
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vgmstream->coding_type = coding_IMA_int;
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vgmstream->num_samples = ima_bytes_to_samples(data_size, channels);
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vgmstream->loop_start_sample = ima_bytes_to_samples(loop_start, channels);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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{
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int i;
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for (i = 0; i < channels; i++) {
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vgmstream->ch[i].adpcm_history1_32 = read_s16le(0x80 + i*0x04 + 0x00, sf);
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vgmstream->ch[i].adpcm_step_index = read_s16le(0x80 + i*0x04 + 0x02, sf);
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}
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}
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break;
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//TODO: Luminous Arc 2 uses a variation of this, but value 0x70
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case 0xb0: /* Soma Bringer (DS), Rekishi Taisen Gettenka (DS) */
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vgmstream->coding_type = coding_NDS_PROCYON;
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vgmstream->num_samples = data_size / channels / 16 * 30;
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vgmstream->loop_start_sample = loop_start / channels / 16 *30;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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break;
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default:
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goto fail;
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}
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if (!vgmstream_open_stream(vgmstream, sf, start_offset))
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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