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52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
#include "meta.h"
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/* LPCM - from Shade's 'Shade game library' (ShdLib) [Ah! My Goddess (PS2), Warship Gunner (PS2)] */
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VGMSTREAM* init_vgmstream_lpcm_shade(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset;
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uint32_t loop_flag, channels;
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/* checks */
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if (!is_id32be(0x00, sf, "LPCM"))
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goto fail;
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/* .w: real extension
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* .lpcm: fake (header id) */
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if (!check_extensions(sf, "w,lpcm"))
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goto fail;
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/* extra checks since header is kind of simple */
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if (read_s32le(0x04,sf) * 0x02 * 2 > get_streamfile_size(sf)) /* data size is less than total samples */
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goto fail;
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if (read_u32le(0x10,sf) != 0) /* just in case */
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goto fail;
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start_offset = 0x800; /* assumed, closer to num_samples */
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loop_flag = read_s32le(0x8,sf) != 0;
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channels = 2;
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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_LPCM_SHADE;
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vgmstream->sample_rate = 48000;
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vgmstream->num_samples = read_s32le(0x4,sf);
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vgmstream->loop_start_sample = read_s32le(0x8,sf);
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vgmstream->loop_end_sample = read_s32le(0xc,sf);
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x02;
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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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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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