mirror of
https://github.com/vgmstream/vgmstream.git
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69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
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#include "meta.h"
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#include "../coding/coding.h"
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#include "../util.h"
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/* .ADX - from Xenoblade 3D */
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/* Xenoblade Chronicles 3D uses an adx extension as with
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* the Wii version, but it's actually DSP ADPCM. */
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VGMSTREAM * init_vgmstream_dsp_adx(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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int loop_flag, channel_count;
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int channel_header_spacing = 0x34;
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/* check extension, case insensitive */
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if (!check_extensions(streamFile,"adx")) goto fail;
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/* check header */
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if (read_32bitBE(0,streamFile)!=0x02000000) goto fail;
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channel_count = read_32bitLE(0, streamFile);
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loop_flag = read_16bitLE(0x6e, streamFile);
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if (channel_count > 2 || channel_count < 0) goto fail;
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vgmstream = allocate_vgmstream(channel_count,loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_none;
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vgmstream->meta_type = meta_XB3D_ADX;
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vgmstream->sample_rate = read_32bitLE(0x70,streamFile);
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vgmstream->num_samples = read_32bitLE(0x74, streamFile);
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vgmstream->loop_start_sample = read_32bitLE(0x78, streamFile);
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vgmstream->loop_end_sample = read_32bitLE(0x7c, streamFile);
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dsp_read_coefs_le(vgmstream,streamFile, 0x4, channel_header_spacing);
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/* semi-interleave: manually open streams at offset */
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{
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char filename[PATH_LIMIT];
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int i;
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streamFile->get_name(streamFile,filename,sizeof(filename));
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for (i = 0; i<channel_count; i++) {
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vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename, STREAMFILE_DEFAULT_BUFFER_SIZE);
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vgmstream->ch[i].channel_start_offset =
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vgmstream->ch[i].offset = read_32bitLE(0x34+i*channel_header_spacing, streamFile);
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if (!vgmstream->ch[i].streamfile) goto fail;
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}
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}
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#if 0
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/* this should be equivalent to the above, but more testing is needed */
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size =
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read_32bitLE(0x34+1*channel_header_spacing, streamFile)
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- read_32bitLE(0x34+0*channel_header_spacing, streamFile);
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if (!vgmstream_open_stream(vgmstream,streamFile, read_32bitLE(0x34+0*channel_header_spacing, streamFile)))
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goto fail;
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#endif
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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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