mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 18:05:52 +01:00
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
#include "meta.h"
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#include "../util.h"
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/* sadl - from DS games with Procyon Studio audio driver */
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VGMSTREAM * init_vgmstream_sadl(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channel_count;
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/* checks */
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if (!check_extensions(streamFile, "sad"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x7361646c) /* "sadl" */
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goto fail;
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if (read_32bitLE(0x40,streamFile) != get_streamfile_size(streamFile))
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goto fail;
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loop_flag = read_8bit(0x31,streamFile);
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channel_count = read_8bit(0x32,streamFile);
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start_offset = 0x100;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count,loop_flag);
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if (!vgmstream) goto fail;
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switch (read_8bit(0x33,streamFile) & 6) {
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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:
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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->meta_type = meta_SADL;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x10;
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switch(read_8bit(0x33,streamFile) & 0xf0) {
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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 = (read_32bitLE(0x40,streamFile)-start_offset)/channel_count*2;
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vgmstream->loop_start_sample = (read_32bitLE(0x54,streamFile)-start_offset)/channel_count*2;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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break;
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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 = (read_32bitLE(0x40,streamFile)-start_offset)/channel_count/16*30;
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vgmstream->loop_start_sample = (read_32bitLE(0x54,streamFile)-start_offset)/channel_count/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,streamFile,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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