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55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../layout/layout.h"
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/* EA WVE (Ad10) - from Electronic Arts PS movies [Wing Commander 3/4 (PS)] */
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VGMSTREAM * init_vgmstream_ea_wve_ad10(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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if (!check_extensions(streamFile, "wve"))
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goto fail;
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start_offset = 0x00;
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if (read_32bitBE(start_offset, streamFile) != 0x41643130 && /* "Ad10" */
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read_32bitBE(start_offset, streamFile) != 0x41643131) /* "Ad11" (last block, but could be first) */
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goto fail;
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loop_flag = 0;
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/* no header = no channels, but seems if the first PS-ADPCM header is 00 then it's mono, somehow
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* (ex. Wing Commander 3 intro / Wing Commander 4 = stereo, rest of Wing Commander 3 = mono) */
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channel_count = read_8bit(start_offset+0x08,streamFile) != 0 ? 2 : 1;
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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 = 22050;
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vgmstream->meta_type = meta_EA_WVE_AD10;
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_blocked_ea_wve_ad10;
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if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
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goto fail;
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/* calc num_samples manually */
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{
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vgmstream->next_block_offset = start_offset;
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do {
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block_update(vgmstream->next_block_offset,vgmstream);
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vgmstream->num_samples += ps_bytes_to_samples(vgmstream->current_block_size, 1);
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}
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while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
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block_update(start_offset, vgmstream);
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}
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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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