mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 15:42:52 +01:00
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
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#include "../vgmstream.h"
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#ifdef VGM_USE_VORBIS
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#include <ctype.h>
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#include "meta.h"
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#include "../util.h"
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#ifdef WIN32
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#define DIRSEP '\\'
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#else
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#define DIRSEP '/'
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#endif
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/* .sli is a file with loop points, associated with a similarly named .ogg */
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VGMSTREAM * init_vgmstream_sli_ogg(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE * streamFileOGG = NULL;
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char filename[260];
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char filenameOGG[260];
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char linebuffer[260];
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off_t bytes_read;
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off_t sli_offset;
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int done;
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int32_t loop_start = -1;
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int32_t loop_length = -1;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("sli",filename_extension(filename))) goto fail;
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/* check for .OGG file */
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strcpy(filenameOGG,filename);
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/* strip off .sli */
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filenameOGG[strlen(filenameOGG)-4]='\0';
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streamFileOGG = streamFile->open(streamFile,filenameOGG,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!streamFileOGG) {
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goto fail;
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}
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/* let the real initer do the parsing */
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vgmstream = init_vgmstream_ogg_vorbis(streamFileOGG);
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if (!vgmstream) goto fail;
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close_streamfile(streamFileOGG);
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streamFileOGG = NULL;
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sli_offset = 0;
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while ((loop_start == -1 || loop_length == -1) && sli_offset < get_streamfile_size(streamFile)) {
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char *endptr;
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bytes_read=get_streamfile_dos_line(sizeof(linebuffer),linebuffer,sli_offset,streamFile,&done);
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if (!done) goto fail;
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if (!memcmp("LoopStart=",linebuffer,10) && linebuffer[10]!='\0') {
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loop_start = strtol(linebuffer+10,&endptr,10);
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if (*endptr != '\0') {
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/* if it didn't parse cleanly */
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loop_start = -1;
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}
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}
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else if (!memcmp("LoopLength=",linebuffer,11) && linebuffer[11]!='\0') {
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loop_length = strtol(linebuffer+11,&endptr,10);
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if (*endptr != '\0') {
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/* if it didn't parse cleanly */
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loop_length = -1;
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}
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}
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sli_offset += bytes_read;
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}
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if (loop_start != -1 && loop_length != -1) {
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/* install loops */
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if (!vgmstream->loop_flag) {
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vgmstream->loop_flag = 1;
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vgmstream->loop_ch = calloc(vgmstream->channels,
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sizeof(VGMSTREAMCHANNEL));
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if (!vgmstream->loop_ch) goto fail;
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}
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_start+loop_length;
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}
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vgmstream->meta_type = meta_OGG_SLI;
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return vgmstream;
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/* clean up anything we may have opened */
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fail:
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if (streamFileOGG) close_streamfile(streamFileOGG);
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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#endif
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