mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-13 15:21:04 +01:00
117 lines
3.8 KiB
C
117 lines
3.8 KiB
C
#include "meta.h"
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#include <ctype.h>
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/* .sli+ogg/opus - KiriKiri engine / WaveLoopManager loop points loader [Fate/Stay Night (PC), World End Economica (PC)] */
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VGMSTREAM * init_vgmstream_sli_ogg(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE * streamData = NULL;
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int32_t loop_start = -1, loop_length = -1;
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int32_t loop_from = -1, loop_to = -1;
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/* checks */
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if (!check_extensions(streamFile, "sli"))
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goto fail;
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{
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/* try with file.ogg/opus.sli=header and file.ogg/opus=data */
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char basename[PATH_LIMIT];
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get_streamfile_basename(streamFile,basename,PATH_LIMIT);
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streamData = open_streamfile_by_filename(streamFile, basename);
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if (!streamData) goto fail;
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}
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/* let the real initer do the parsing */
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if (check_extensions(streamData, "ogg")) { /* Fate/Stay Night (PC) */
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#ifdef VGM_USE_VORBIS
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vgmstream = init_vgmstream_ogg_vorbis(streamData);
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if (!vgmstream) goto fail;
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vgmstream->meta_type = meta_OGG_SLI;
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#else
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goto fail;
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#endif
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}
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else if (check_extensions(streamData, "opus")) { /* Sabbat of the Witch (PC) */
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#ifdef VGM_USE_FFMPEG
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vgmstream = init_vgmstream_ffmpeg(streamData);
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if (!vgmstream) goto fail;
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/* FFmpeg's Opus encoder delay is borked but no need to fix:
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* somehow sli+opus use 0 in the OpusHead (to simplify looping?) */
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vgmstream->meta_type = meta_OPUS_SLI;
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#else
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goto fail;
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#endif
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}
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else {
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goto fail;
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}
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/* find loop text */
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{
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char linebuffer[PATH_LIMIT];
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size_t bytes_read;
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off_t sli_offset;
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int done;
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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, *foundptr;
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bytes_read = get_streamfile_text_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)==0 && 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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loop_start = -1; /* if it didn't parse cleanly */
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}
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}
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else if (memcmp("LoopLength=",linebuffer,11)==0 && 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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loop_length = -1; /* if it didn't parse cleanly */
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}
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}
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/* a completely different format (2.0?), also with .sli extension and can be handled similarly */
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if ((foundptr = strstr(linebuffer,"To=")) != NULL && isdigit(foundptr[3])) {
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loop_to = strtol(foundptr+3,&endptr,10);
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if (*endptr != ';') {
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loop_to = -1;
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}
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}
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if ((foundptr = strstr(linebuffer,"From=")) != NULL && isdigit(foundptr[5])) {
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loop_from = strtol(foundptr+5,&endptr,10);
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if (*endptr != ';') {
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loop_from = -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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}
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if (loop_start != -1 && loop_length != -1) { /* v1 */
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vgmstream_force_loop(vgmstream,1,loop_start, loop_start+loop_length);
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}
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else if (loop_from != -1 && loop_to != -1) { /* v2 */
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vgmstream_force_loop(vgmstream,1,loop_to, loop_from);
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}
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else {
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goto fail; /* if there's no loop points the .sli wasn't valid */
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}
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close_streamfile(streamData);
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return vgmstream;
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fail:
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close_streamfile(streamData);
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close_vgmstream(vgmstream);
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return NULL;
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}
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