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9cf9416665
Currently same as ms_ima_bytes_to_samples, but this will change; renamed for consistency with all other IMA variations. Also clean a bit some metas since I was testing anyway.
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
#include "meta.h"
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#include "../util.h"
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#include "../coding/coding.h"
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/* ADS - from Gauntlet Dark Legacy (GC/Xbox) */
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VGMSTREAM * init_vgmstream_ads(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, codec;
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/* check extension, case insensitive */
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if (!check_extensions(streamFile,"ads")) goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x64685353) /* "dhSS" */
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goto fail;
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if (read_32bitBE(0x20,streamFile) != 0x64625353) /* "dbSS" */
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goto fail;
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loop_flag = 1;
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channel_count = read_32bitBE(0x10,streamFile);
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if (channel_count > 2)
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goto fail;
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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 = read_32bitBE(0x0c,streamFile);
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codec = read_32bitBE(0x08,streamFile);
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switch (codec) {
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case 0x00000020: /* GC */
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start_offset = 0x28 + 0x60 * channel_count;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->num_samples = read_32bitBE(0x28,streamFile);
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if (loop_flag) {
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vgmstream->loop_start_sample = 0;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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if (channel_count == 1) {
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vgmstream->layout_type = layout_none;
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} else if (channel_count == 2) {
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = read_32bitBE(0x14,streamFile);
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}
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dsp_read_coefs_be(vgmstream, streamFile, 0x44,0x60);
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break;
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case 0x00000021: /* Xbox */
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start_offset = 0x28;
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vgmstream->coding_type = coding_XBOX_IMA_int;
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vgmstream->num_samples = xbox_ima_bytes_to_samples(read_32bitBE(0x24,streamFile), vgmstream->channels);
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vgmstream->layout_type = channel_count == 1 ? layout_none : layout_interleave;
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vgmstream->interleave_block_size = 0x24;
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if (loop_flag) {
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vgmstream->loop_start_sample = 0;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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break;
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default:
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goto fail;
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}
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vgmstream->meta_type = meta_ADS;
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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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