mirror of
https://github.com/vgmstream/vgmstream.git
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70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
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#include "meta.h"
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#include "../coding/coding.h"
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/* ULW - headerless U-law, found in Burnout (GC) */
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VGMSTREAM * init_vgmstream_ngc_ulw(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag = 0, channel_count;
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/* check extension, case insensitive */
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if ( !check_extensions(streamFile,"ulw"))
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goto fail;
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/* raw data, the info is in the filename (really!) */
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{
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char* path;
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char basename[PATH_LIMIT];
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char filename[PATH_LIMIT];
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/* get base name */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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path = strrchr(filename,DIR_SEPARATOR);
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if (path!=NULL)
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path = path+1;
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else
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path = filename;
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strcpy(basename,path);
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/* first letter gives the channels */
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if (basename[0]=='M') /* Mono */
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channel_count = 1;
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else if (basename[0]=='S' || basename[0]=='D') /* Stereo/Dolby */
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channel_count = 2;
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else
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goto fail;
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/* not very robust but meh (other tracks don't loop) */
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if (strcmp(basename,"MMenu.ulw")==0 || strcmp(basename,"DMenu.ulw")==0) {
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loop_flag = 1;
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}
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}
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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 = 32000;
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vgmstream->coding_type = coding_ULAW;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x01;
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vgmstream->meta_type = meta_NGC_ULW;
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vgmstream->num_samples = pcm_bytes_to_samples(get_streamfile_size(streamFile), channel_count, 8);
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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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start_offset = 0;
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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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