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64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* ASF - Argonaut PC games [Croc 2 (PC), Aladdin: Nasira's Revenge (PC)] */
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VGMSTREAM* init_vgmstream_asf(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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uint32_t start_offset;
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int loop_flag, channels, type, sample_rate;
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/* checks */
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if (!is_id32be(0x00,sf, "ASF\0"))
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goto fail;
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/* .asf: original
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* .lasf: fake for plugins */
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if (!check_extensions(sf, "asf,lasf"))
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goto fail;
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if (read_u32le(0x04,sf) != 0x00010002) /* v1.002? */
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goto fail;
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if (read_u32le(0x08,sf) != 0x01 &&
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read_u32le(0x0c,sf) != 0x18)
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goto fail;
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/* 0x10~18: stream name (same as filename) */
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/* 0x18: non-full size? */
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if (read_u32le(0x1c,sf) != 0x20) /* samples per frame? */
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goto fail;
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sample_rate = read_u16le(0x24, sf);
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type = read_u32le(0x28,sf); /* assumed? */
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switch(type){
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case 0x0d: channels = 1; break; /* Aladdin: Nasira's Revenge (PC) */
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case 0x0f: channels = 2; break; /* Croc 2 (PC), The Emperor's New Groove (PC) */
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default: goto fail;
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}
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loop_flag = 0;
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start_offset = 0x2c;
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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->sample_rate = sample_rate;
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vgmstream->meta_type = meta_ASF;
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vgmstream->coding_type = coding_ASF;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x11;
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vgmstream->num_samples = (get_streamfile_size(sf) - start_offset) / (0x11 * channels) * 32; /* bytes_to_samples */
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//vgmstream->num_samples = read_32bitLE(0x18,sf) * (32 << channels); /* something like this? */
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read_string(vgmstream->stream_name,0x10, 0x08+1,sf);
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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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