59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* ILD - from Tose(?) games [Battle of Sunrise (PS2), Nightmare Before Christmas: Oogie's Revenge (PS2)] */
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VGMSTREAM* init_vgmstream_ild(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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int channels, loop_flag;
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uint32_t data_size;
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off_t start_offset;
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/* check ILD Header */
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if (!is_id32be(0x00,sf, "ILD\0"))
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goto fail;
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if (!check_extensions(sf, "ild"))
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goto fail;
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channels = read_u32le(0x04,sf); /* tracks (seen 2 and 4) */
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start_offset = read_u32le(0x08,sf);
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data_size = read_u32le(0x0C,sf);
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/* 0x10: headers size / 2? */
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/* 0x14: header per channel */
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/* - 0x00: null */
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/* - 0x04: header size? (always 0x20) */
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/* - 0x08: size (may vary a bit between channel pairs) */
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/* - 0x0c: interleave? */
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/* - 0x10: channels per track (1) */
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/* - 0x14: sample rate */
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/* - 0x18: loop start */
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/* - 0x1c: loop end (also varies) */
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loop_flag = (read_s32le(0x2C,sf) > 0);
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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_ILD;
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vgmstream->num_samples = ps_bytes_to_samples(data_size, channels);
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vgmstream->interleave_block_size = read_u32le(0x14 + 0x0c,sf);
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vgmstream->sample_rate = read_u32le(0x14 + 0x14,sf);
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vgmstream->loop_start_sample = ps_bytes_to_samples(read_u32le(0x14 + 0x18,sf), 1);
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vgmstream->loop_end_sample = ps_bytes_to_samples(read_u32le(0x14 + 0x1c,sf), 1);
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave;
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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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