#include "meta.h" #include "../coding/coding.h" #include "../util.h" /* XVAG (from Ratchet & Clank Future: Quest for Booty) */ /* v0.1 : bxaimc : Initial release */ /* v0.2 : Fastelbja : add support for loops points */ /* + little endian header values */ VGMSTREAM * init_vgmstream_ps3_xvag(STREAMFILE *streamFile) { VGMSTREAM * vgmstream = NULL; char filename[260]; uint8_t testBuffer[0x10]; off_t start_offset; off_t fileLength; int loop_flag = 0; int channel_count; off_t readOffset = 0; int little_endian = 0; long sample_rate = 0; long num_samples = 0; #ifdef VGM_USE_MPEG mpeg_codec_data *mpeg_data = NULL; coding_t mpeg_coding_type = coding_MPEG1_L3; #endif int loopStartPointsCount=0; int loopEndPointsCount=0; uint16_t mp3ID; off_t loopStartPoints[0x10]; off_t loopEndPoints[0x10]; off_t loopStart = 0; off_t loopEnd = 0; /* check extension, case insensitive */ streamFile->get_name(streamFile,filename,sizeof(filename)); if (strcasecmp("xvag",filename_extension(filename))) goto fail; /* check header */ if (read_32bitBE(0x00,streamFile) != 0x58564147) /* "XVAG" */ goto fail; fileLength = get_streamfile_size(streamFile); if (read_8bit(0x07,streamFile)==0) little_endian=1; if(little_endian) { channel_count = read_32bitLE(0x28,streamFile); start_offset = read_32bitLE(0x4,streamFile); sample_rate = read_32bitLE(0x3c,streamFile); num_samples = read_32bitLE(0x30,streamFile); } else { channel_count = read_32bitBE(0x28,streamFile); start_offset = read_32bitBE(0x4,streamFile); sample_rate = read_32bitBE(0x3c,streamFile); num_samples = read_32bitBE(0x30,streamFile); } readOffset=start_offset; // MP3s ? mp3ID=(uint16_t)read_16bitBE(0x4C,streamFile); if(mp3ID==0xFFFB) { #ifdef VGM_USE_MPEG long rate; int channels,encoding; mpeg_data = init_mpeg_codec_data(streamFile, start_offset, -1, -1, &mpeg_coding_type, &rate, &channels); // -1 to not check sample rate or channels if (!mpeg_data) goto fail; channel_count = channels; sample_rate = rate; #else // reject if no MPEG support goto fail; #endif } else { // get the loops the same way we get on .MIB do { readOffset+=(off_t)read_streamfile(testBuffer,readOffset,0x10,streamFile); // Loop Start ... if(testBuffer[0x01]==0x06) { if(loopStartPointsCount<0x10) { loopStartPoints[loopStartPointsCount] = readOffset-0x10; loopStartPointsCount++; } } // Loop End ... if(((testBuffer[0x01]==0x03) && (testBuffer[0x03]!=0x77)) || (testBuffer[0x01]==0x01)) { if(loopEndPointsCount<0x10) { loopEndPoints[loopEndPointsCount] = readOffset; //-0x10; loopEndPointsCount++; } } } while (readOffset<((int32_t)fileLength)); // Calc Loop Points & Interleave ... if(loopStartPointsCount>=channel_count) { // can't get more then 0x10 loop point ! if((loopStartPointsCount<=0x0F) && (loopStartPointsCount>=2)) { // Always took the first 2 loop points loopStart=loopStartPoints[1]-start_offset; loop_flag=1; } else loopStart=0; } if(loopEndPointsCount>=channel_count) { // can't get more then 0x10 loop point ! if((loopEndPointsCount<=0x0F) && (loopEndPointsCount>=2)) { loop_flag=1; loopEnd=loopEndPoints[loopEndPointsCount-1]-start_offset; } else { loopEnd=0; } } // as i can get on the header if a song is looped or not // if try to take the loop marker on the file // if the last byte of the file is = 00 is assume that the song is not looped // i know that i can cover 95% of the file, but can't work on some of them if(read_8bit((fileLength-1),streamFile)==0) loop_flag=0; } /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channel_count,loop_flag); if (!vgmstream) goto fail; vgmstream->sample_rate = sample_rate; vgmstream->num_samples = num_samples; vgmstream->channels = channel_count; vgmstream->meta_type = meta_PS3_XVAG; if(mp3ID==0xFFFB) { #ifdef VGM_USE_MPEG /* NOTE: num_samples seems to be quite wrong for MPEG */ vgmstream->codec_data = mpeg_data; vgmstream->layout_type = layout_mpeg; vgmstream->coding_type = mpeg_coding_type; #else // reject if no MPEG support goto fail; #endif } else { vgmstream->layout_type = layout_interleave; vgmstream->interleave_block_size = 0x10; vgmstream->coding_type = coding_PSX; } if (loop_flag) { if(loopStart!=0) { vgmstream->loop_start_sample = ((((loopStart/vgmstream->interleave_block_size)-1)*vgmstream->interleave_block_size)/16*28)/channel_count; if(loopStart%vgmstream->interleave_block_size) { vgmstream->loop_start_sample += (((loopStart%vgmstream->interleave_block_size)-1)/16*14*channel_count); } } vgmstream->loop_end_sample = ((((loopEnd/vgmstream->interleave_block_size)-1)*vgmstream->interleave_block_size)/16*28)/channel_count; if(loopEnd%vgmstream->interleave_block_size) { vgmstream->loop_end_sample += (((loopEnd%vgmstream->interleave_block_size)-1)/16*14*channel_count); } } /* open the file for reading */ { int i; STREAMFILE * file; if(vgmstream->layout_type == layout_interleave) { file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE); if (!file) goto fail; for (i=0;ich[i].streamfile = file; vgmstream->ch[i].channel_start_offset= vgmstream->ch[i].offset=start_offset+ vgmstream->interleave_block_size*i; } } #ifdef VGM_USE_MPEG else if(vgmstream->layout_type == layout_mpeg) { for (i=0;ich[i].streamfile = streamFile->open(streamFile,filename,MPEG_BUFFER_SIZE); vgmstream->ch[i].channel_start_offset= vgmstream->ch[i].offset=start_offset; } } #endif else { goto fail; } } return vgmstream; /* clean up anything we may have opened */ fail: #ifdef VGM_USE_MPEG if (mpeg_data) { mpg123_delete(mpeg_data->m); free(mpeg_data); if (vgmstream) { vgmstream->codec_data = NULL; } } #endif if (vgmstream) close_vgmstream(vgmstream); return NULL; }