mirror of
https://github.com/vgmstream/vgmstream.git
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83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
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#include "meta.h"
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#include "../util.h"
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/* SOB/SAB combination as found in Worms 4: Mayhem
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they are actually soundpacks, but the audio data is just streamed as one big stream
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*/
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VGMSTREAM * init_vgmstream_sab(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE* sob = NULL;
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char filename[260];
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int i;
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int loop_flag, channel_count, numSounds;
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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("sab",filename_extension(filename))) goto fail;
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/* read information from sob file*/
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filename[strlen(filename)-2]='o'; //change extension in sob of file
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sob = open_stdio_streamfile(filename);
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if(!sob) goto fail;
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filename[strlen(filename)-2]='a';//change back to original file
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if (read_32bitBE(0,streamFile)!=0x43535732)//CSW2 header sab file
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{
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goto fail;
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}
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if (read_32bitBE(0,sob)!=0x43544632)//CTF2 header sob file
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{
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goto fail;
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}
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numSounds = read_32bitLE(8,sob);
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if(numSounds==1)
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{//it means it's a single stream and not a voice bank
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loop_flag = 1;
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}else
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{
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loop_flag = 0;
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}
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/* Read channels */
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channel_count = read_32bitLE(0x30,sob);
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if( (channel_count>2)||(numSounds>1))/* dirty hack for number of channels*/
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channel_count = 1;
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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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/* fill in the vital statistics */
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//is offset OK. sab files can contain more audio files, but without the sob it's just a long stream of sound effects
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vgmstream->current_block_offset=8+32*numSounds;
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitLE(0x20,streamFile);
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vgmstream->coding_type = coding_PCM16LE_int;
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vgmstream->num_samples = (int32_t)((get_streamfile_size(streamFile)-vgmstream->current_block_offset)/2/channel_count);
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if(loop_flag)
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{
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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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vgmstream->layout_type = layout_none;
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vgmstream->meta_type = meta_PC_SOB_SAB;
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{
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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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if (!vgmstream->ch[i].streamfile) goto fail;
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vgmstream->ch[i].channel_start_offset=
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vgmstream->ch[i].offset=vgmstream->current_block_offset+2*i;
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}
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}
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close_streamfile(sob);
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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 (sob) close_streamfile(sob);
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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