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49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
#include "meta.h"
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#include "../util.h"
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/* AUS - Atomic Planet games [Jackie Chan Adventures (PS2), Mega Man Anniversary Collection (PS2/Xbox)] */
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VGMSTREAM* init_vgmstream_aus(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channels, codec;
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/* checks */
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if (!is_id32be(0x00, sf, "AUS "))
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goto fail;
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if (!check_extensions(sf, "aus"))
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goto fail;
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channels = read_u32le(0x0c,sf);
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start_offset = 0x800;
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codec = read_u16le(0x06,sf);
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loop_flag = (read_u32le(0x1c,sf) == 1); /* games seem to just do full loops, even when makes no sense (jingles/megaman stages) */
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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_AUS;
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vgmstream->sample_rate = read_s32le(0x10,sf); /* uses pretty odd values */
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vgmstream->num_samples = read_s32le(0x08,sf);
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vgmstream->loop_start_sample = read_s32le(0x14,sf); /* always 0? */
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vgmstream->loop_end_sample = read_s32le(0x18,sf); /* always samples? */
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if (codec == 0x02) {
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vgmstream->coding_type = coding_XBOX_IMA;
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vgmstream->layout_type = layout_none;
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}
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else {
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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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}
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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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