mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-13 15:21:04 +01:00
59 lines
1.9 KiB
C
59 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 *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, version;
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/* checks */
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/* .asf: original
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* .lasf: fake for plugins */
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if (!check_extensions(streamFile, "asf,lasf"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x41534600) /* "ASF\0" */
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goto fail;
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if (read_32bitBE(0x04,streamFile) != 0x02000100)
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goto fail;
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if (read_32bitLE(0x08,streamFile) != 0x01 &&
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read_32bitLE(0x0c,streamFile) != 0x18 &&
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read_32bitLE(0x1c,streamFile) != 0x20)
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goto fail;
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version = read_32bitLE(0x28,streamFile); /* assumed? */
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switch(version){
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case 0x0d: channel_count = 1; break; /* Aladdin: Nasira's Revenge (PC) */
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case 0x0f: channel_count = 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(channel_count, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->sample_rate = (uint16_t)read_16bitLE(0x24, streamFile);
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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(streamFile)-start_offset)/(0x11*channel_count)*32; /* bytes_to_samples */
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//vgmstream->num_samples = read_32bitLE(0x18,streamFile) * (0x20<<channel_count); /* something like this? */
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read_string(vgmstream->stream_name,0x10, 0x08+1,streamFile);
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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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