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https://github.com/vgmstream/vgmstream.git
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git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@829 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
This commit is contained in:
fastelbja
parent
a8fb8e3421
commit
3210d31d12
@ -2,13 +2,31 @@
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#include "../util.h"
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/* XVAG (from Ratchet & Clank Future: Quest for Booty) */
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/* v0.1 : bxaimc : Initial release */
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/* v0.2 : Fastelbja : add support for loops points */
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/* + little endian header values */
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VGMSTREAM * init_vgmstream_ps3_xvag(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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off_t start_offset;
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uint8_t testBuffer[0x10];
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int loop_flag;
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int channel_count;
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off_t start_offset;
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off_t fileLength;
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int loop_flag = 0;
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int channel_count;
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off_t readOffset = 0;
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int little_endian = 0;
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int loopStartPointsCount=0;
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int loopEndPointsCount=0;
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int mp3ID;
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off_t loopStartPoints[0x10];
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off_t loopEndPoints[0x10];
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off_t loopStart = 0;
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off_t loopEnd = 0;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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@ -18,43 +36,149 @@ VGMSTREAM * init_vgmstream_ps3_xvag(STREAMFILE *streamFile) {
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if (read_32bitBE(0x00,streamFile) != 0x58564147) /* "XVAG" */
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goto fail;
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loop_flag = 0;
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fileLength = get_streamfile_size(streamFile);
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channel_count = read_32bitBE(0x28,streamFile);
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if (read_8bit(0x07,streamFile)==0)
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little_endian=1;
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if(little_endian)
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{
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channel_count = read_32bitLE(0x28,streamFile);
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start_offset = read_32bitLE(0x4,streamFile);
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}
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else
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{
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channel_count = read_32bitBE(0x28,streamFile);
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start_offset = read_32bitBE(0x4,streamFile);
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}
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readOffset=start_offset;
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// MP3s ?
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mp3ID=read_16bitLE(0x4C,streamFile);
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if(mp3ID!=0xFFFFFBFF) {
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// get the loops the same way we get on .MIB
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do {
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readOffset+=(off_t)read_streamfile(testBuffer,readOffset,0x10,streamFile);
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// Loop Start ...
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if(testBuffer[0x01]==0x06)
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{
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if(loopStartPointsCount<0x10)
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{
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loopStartPoints[loopStartPointsCount] = readOffset-0x10;
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loopStartPointsCount++;
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}
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}
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// Loop End ...
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if(((testBuffer[0x01]==0x03) && (testBuffer[0x03]!=0x77)) ||
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(testBuffer[0x01]==0x01))
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{
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if(loopEndPointsCount<0x10)
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{
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loopEndPoints[loopEndPointsCount] = readOffset; //-0x10;
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loopEndPointsCount++;
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}
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}
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} while (readOffset<((int32_t)fileLength));
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// Calc Loop Points & Interleave ...
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if(loopStartPointsCount>=channel_count)
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{
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// can't get more then 0x10 loop point !
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if((loopStartPointsCount<=0x0F) && (loopStartPointsCount>=2))
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{
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// Always took the first 2 loop points
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loopStart=loopStartPoints[1];
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loop_flag=1;
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} else
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loopStart=0;
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}
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if(loopEndPointsCount>=channel_count)
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{
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// can't get more then 0x10 loop point !
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if((loopEndPointsCount<=0x0F) && (loopEndPointsCount>=2)) {
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loop_flag=1;
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loopEnd=loopEndPoints[loopEndPointsCount-1];
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} else {
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loopEnd=0;
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}
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}
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// as i can get on the header if a song is looped or not
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// if try to take the loop marker on the file
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// if the last byte of the file is = 00 is assume that the song is not looped
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// i know that i can cover 95% of the file, but can't work on some of them
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if(read_8bit((fileLength-1),streamFile)==0)
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loop_flag=0;
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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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/* fill in the vital statistics */
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start_offset = read_32bitBE(0x4,streamFile);
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitBE(0x3c,streamFile);
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vgmstream->coding_type = coding_PSX;
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vgmstream->num_samples = read_32bitBE(0x30,streamFile);
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if (loop_flag) {
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vgmstream->loop_start_sample = read_32bitBE(0x24,streamFile);;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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/* fill in the vital statistics */
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if (little_endian) {
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vgmstream->sample_rate = read_32bitLE(0x3c,streamFile);
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vgmstream->num_samples = read_32bitLE(0x30,streamFile);
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} else {
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vgmstream->sample_rate = read_32bitBE(0x3c,streamFile);
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vgmstream->num_samples = read_32bitBE(0x30,streamFile);
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}
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x10;
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vgmstream->channels = channel_count;
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vgmstream->meta_type = meta_PS3_XVAG;
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if(mp3ID==0xFFFFFBFF) {
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// mp3s support doesn't work atm !
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vgmstream->layout_type = layout_mpeg;
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vgmstream->coding_type = coding_MPEG1_L3;
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}
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else {
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x10;
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vgmstream->coding_type = coding_PSX;
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}
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if (loop_flag) {
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if(loopStart!=0) {
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vgmstream->loop_start_sample = ((((loopStart/vgmstream->interleave_block_size)-1)*vgmstream->interleave_block_size)/16*14*channel_count)/channel_count;
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if(loopStart%vgmstream->interleave_block_size) {
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vgmstream->loop_start_sample += (((loopStart%vgmstream->interleave_block_size)-1)/16*14*channel_count);
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}
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}
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vgmstream->loop_end_sample = ((((loopEnd/vgmstream->interleave_block_size)-1)*vgmstream->interleave_block_size)/16*14*channel_count)/channel_count;
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if(loopEnd%vgmstream->interleave_block_size) {
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vgmstream->loop_end_sample += (((loopEnd%vgmstream->interleave_block_size)-1)/16*14*channel_count);
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}
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}
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/* open the file for reading */
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{
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int i;
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STREAMFILE * file;
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file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!file) goto fail;
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = file;
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if(vgmstream->layout_type == layout_mpeg) {
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,MPEG_BUFFER_SIZE);
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vgmstream->ch[i].channel_start_offset= vgmstream->ch[i].offset=start_offset;
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}
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vgmstream->ch[i].channel_start_offset=
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vgmstream->ch[i].offset=start_offset+
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vgmstream->interleave_block_size*i;
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} else {
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file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!file) goto fail;
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = file;
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}
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vgmstream->ch[i].channel_start_offset=
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vgmstream->ch[i].offset=start_offset+
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vgmstream->interleave_block_size*i;
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}
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}
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}
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return vgmstream;
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