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54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
#include "meta.h"
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/* .seb - Game Arts games [Grandia (PS1), Grandia II/III/X (PS2)] */
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VGMSTREAM * init_vgmstream_seb(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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/* .seb: found in Grandia II (PS2) .idx */
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/* .gms: fake? (.stz+idx bigfile without names, except in Grandia II) */
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if (!check_extensions(streamFile, "seb,gms,"))
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goto fail;
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channel_count = read_32bitLE(0x00,streamFile);
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if (channel_count > 2) goto fail; /* mono or stereo */
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/* 0x08/0c: unknown count, possibly related to looping */
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start_offset = 0x800;
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if (read_32bitLE(0x10,streamFile) > get_streamfile_size(streamFile) || /* loop start offset */
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read_32bitLE(0x18,streamFile) > get_streamfile_size(streamFile)) /* loop end offset */
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goto fail;
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/* in Grandia III sometimes there is a value at 0x24/34 */
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loop_flag = (read_32bitLE(0x20,streamFile) == 0);
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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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vgmstream->meta_type = meta_SEB;
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vgmstream->sample_rate = read_32bitLE(0x04,streamFile);
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vgmstream->num_samples = read_32bitLE(0x1c,streamFile);
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vgmstream->loop_start_sample = read_32bitLE(0x14,streamFile);
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vgmstream->loop_end_sample = read_32bitLE(0x1c,streamFile);
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x800;
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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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