#include "meta.h" #include "../coding/coding.h" #include "../layout/layout.h" #include "../util.h" #include /* RIFF - Resource Interchange File Format, standard container used in many games */ #ifdef VGM_USE_VORBIS static VGMSTREAM *parse_riff_ogg(STREAMFILE * streamFile, off_t start_offset, size_t data_size); #endif /* return milliseconds */ static long parse_adtl_marker(unsigned char * marker) { long hh,mm,ss,ms; if (memcmp("Marker ",marker,7)) return -1; if (4 != sscanf((char*)marker+7,"%ld:%ld:%ld.%ld",&hh,&mm,&ss,&ms)) return -1; return ((hh*60+mm)*60+ss)*1000+ms; } /* loop points have been found hiding here */ static void parse_adtl(off_t adtl_offset, off_t adtl_length, STREAMFILE *streamFile, long *loop_start, long *loop_end, int *loop_flag) { int loop_start_found = 0; int loop_end_found = 0; off_t current_chunk = adtl_offset+0x04; while (current_chunk < adtl_offset + adtl_length) { uint32_t chunk_type = read_32bitBE(current_chunk+0x00,streamFile); off_t chunk_size = read_32bitLE(current_chunk+0x04,streamFile); if (current_chunk+0x08+chunk_size > adtl_offset+adtl_length) return; switch(chunk_type) { case 0x6c61626c: { /* "labl" */ unsigned char *labelcontent = malloc(chunk_size-0x04); if (!labelcontent) return; if (read_streamfile(labelcontent,current_chunk+0x0c, chunk_size-0x04,streamFile) != chunk_size-0x04) { free(labelcontent); return; } switch (read_32bitLE(current_chunk+8,streamFile)) { case 1: if (!loop_start_found && (*loop_start = parse_adtl_marker(labelcontent)) >= 0) loop_start_found = 1; break; case 2: if (!loop_end_found && (*loop_end = parse_adtl_marker(labelcontent)) >= 0) loop_end_found = 1; break; default: break; } free(labelcontent); break; } default: break; } current_chunk += 8 + chunk_size; } if (loop_start_found && loop_end_found) *loop_flag = 1; /* labels don't seem to be consistently ordered */ if (*loop_start > *loop_end) { long temp = *loop_start; *loop_start = *loop_end; *loop_end = temp; } } typedef struct { off_t offset; off_t size; uint32_t codec; int sample_rate; int channel_count; uint32_t block_size; int bps; int coding_type; int interleave; } riff_fmt_chunk; static int read_fmt(int big_endian, STREAMFILE * streamFile, off_t current_chunk, riff_fmt_chunk * fmt, int mwv) { int32_t (*read_32bit)(off_t,STREAMFILE*) = big_endian ? read_32bitBE : read_32bitLE; int16_t (*read_16bit)(off_t,STREAMFILE*) = big_endian ? read_16bitBE : read_16bitLE; fmt->offset = current_chunk; fmt->size = read_32bit(current_chunk+0x4,streamFile); fmt->sample_rate = read_32bit(current_chunk+0x0c,streamFile); fmt->channel_count = read_16bit(current_chunk+0x0a,streamFile); fmt->block_size = read_16bit(current_chunk+0x14,streamFile); fmt->interleave = 0; fmt->bps = read_16bit(current_chunk+0x16,streamFile); fmt->codec = (uint16_t)read_16bit(current_chunk+0x8,streamFile); switch (fmt->codec) { case 0x00: /* Yamaha ADPCM (raw) [Headhunter (DC), Bomber hehhe (DC)] (unofficial) */ if (fmt->bps != 4) goto fail; if (fmt->block_size != 0x02*fmt->channel_count) goto fail; fmt->coding_type = coding_AICA_int; fmt->interleave = 0x01; break; case 0x01: /* PCM */ switch (fmt->bps) { case 16: fmt->coding_type = big_endian ? coding_PCM16BE : coding_PCM16LE; fmt->interleave = 0x02; break; case 8: fmt->coding_type = coding_PCM8_U_int; fmt->interleave = 0x01; break; default: goto fail; } break; case 0x02: /* MS ADPCM */ if (fmt->bps != 4) goto fail; fmt->coding_type = coding_MSADPCM; break; case 0x11: /* MS IMA ADPCM [Layton Brothers: Mystery Room (iOS/Android)] */ if (fmt->bps != 4) goto fail; fmt->coding_type = coding_MS_IMA; break; case 0x20: /* Yamaha ADPCM (raw) [Takuyo/Dynamix/etc DC games] */ if (fmt->bps != 4) goto fail; fmt->coding_type = coding_AICA; break; case 0x69: /* XBOX IMA ADPCM [Dynasty Warriors 5 (Xbox)] */ if (fmt->bps != 4) goto fail; fmt->coding_type = coding_XBOX_IMA; break; case 0x007A: /* MS IMA ADPCM [LA Rush (PC), Psi Ops (PC)] (unofficial) */ /* 0x007A is apparently "Voxware SC3" but in .MED it's just MS-IMA (0x11) */ if (!check_extensions(streamFile,"med")) goto fail; if (fmt->bps == 4) /* normal MS IMA */ fmt->coding_type = coding_MS_IMA; else if (fmt->bps == 3) /* 3-bit MS IMA, used in a very few files */ goto fail; //fmt->coding_type = coding_MS_IMA_3BIT; else goto fail; break; case 0x0555: /* Level-5 0x555 ADPCM (unofficial) */ if (!mwv) goto fail; fmt->coding_type = coding_L5_555; fmt->interleave = 0x12; break; #ifdef VGM_USE_VORBIS case 0x6771: /* Ogg Vorbis (mode 3+) */ fmt->coding_type = coding_OGG_VORBIS; break; #else goto fail; #endif case 0x270: /* ATRAC3 */ #ifdef VGM_USE_FFMPEG fmt->coding_type = coding_FFmpeg; break; #else goto fail; #endif case 0xFFFE: /* WAVEFORMATEXTENSIBLE */ /* ATRAC3plus GUID (0xBFAA23E9 58CB7144 A119FFFA 01E4CE62) */ if (read_32bit(current_chunk+0x20,streamFile) == 0xE923AABF && read_16bit(current_chunk+0x24,streamFile) == (int16_t)0xCB58 && read_16bit(current_chunk+0x26,streamFile) == 0x4471 && read_32bitLE(current_chunk+0x28,streamFile) == 0xFAFF19A1 && read_32bitLE(current_chunk+0x2C,streamFile) == 0x62CEE401) { #ifdef VGM_USE_MAIATRAC3PLUS uint16_t bztmp = read_16bit(current_chunk+0x32,streamFile); bztmp = (bztmp >> 8) | (bztmp << 8); fmt->coding_type = coding_AT3plus; fmt->block_size = (bztmp & 0x3FF) * 8 + 8; //should match fmt->block_size #elif defined(VGM_USE_FFMPEG) fmt->coding_type = coding_FFmpeg; break; #else goto fail; #endif } /* ATRAC9 GUID 47E142D2-36BA-4d8d-88FC-61654F8C836C (D242E147 BA368D4D 88FC6165 4F8C836C) */ if (read_32bitBE(current_chunk+0x20,streamFile) == 0xD242E147 && read_32bitBE(current_chunk+0x24,streamFile) == 0xBA368D4D && read_32bitBE(current_chunk+0x28,streamFile) == 0x88FC6165 && read_32bitBE(current_chunk+0x2c,streamFile) == 0x4F8C836C) { #ifdef VGM_USE_ATRAC9 fmt->coding_type = coding_ATRAC9; break; #else goto fail; #endif } goto fail; /* unknown GUID */ default: goto fail; } return 0; fail: return -1; } VGMSTREAM * init_vgmstream_riff(STREAMFILE *streamFile) { VGMSTREAM * vgmstream = NULL; riff_fmt_chunk fmt = {0}; size_t file_size, riff_size, data_size = 0; off_t start_offset = 0; int fact_sample_count = 0; int fact_sample_skip = 0; int loop_flag = 0; long loop_start_ms = -1, loop_end_ms = -1; int32_t loop_start_wsmp = -1, loop_end_wsmp = -1; int32_t loop_start_smpl = -1, loop_end_smpl = -1; int FormatChunkFound = 0, DataChunkFound = 0, JunkFound = 0; int mwv = 0; /* Level-5 .mwv (Dragon Quest VIII, Rogue Galaxy) */ off_t mwv_pflt_offset = -1; off_t mwv_ctrl_offset = -1; int at3 = 0; /* Sony ATRAC3 / ATRAC3plus */ int at9 = 0; /* Sony ATRAC9 */ /* check extension */ /* .lwav: to avoid hijacking .wav * .xwav: fake for Xbox games (not needed anymore) * .da: The Great Battle VI (PS1) * .dax: Love Game's - Wai Wai Tennis (PS1) * .cd: Exector (PS) * .med: Psi Ops (PC) * .snd: Layton Brothers (iOS/Android) * .adx: Remember11 (PC) sfx * .adp: Headhunter (DC) * .xss: Spider-Man The Movie (Xbox) * .xsew: Mega Man X Legacy Collections (PC) */ if ( check_extensions(streamFile, "wav,lwav,xwav,da,dax,cd,med,snd,adx,adp,xss,xsew") ) { ; } else if ( check_extensions(streamFile, "mwv") ) { mwv = 1; } /* .at3: standard * .rws: Climax games (Silent Hill Origins PSP, Oblivion PSP) * .aud: EA Replay */ else if ( check_extensions(streamFile, "at3,rws,aud") ) { at3 = 1; } else if ( check_extensions(streamFile, "at9") ) { at9 = 1; } else { goto fail; } /* check header */ if (read_32bitBE(0x00,streamFile) != 0x52494646) /* "RIFF" */ goto fail; if (read_32bitBE(0x08,streamFile) != 0x57415645) /* "WAVE" */ goto fail; riff_size = read_32bitLE(0x04,streamFile); file_size = get_streamfile_size(streamFile); /* for some of Liar-soft's buggy RIFF+Ogg made with Soundforge [Shikkoku no Sharnoth (PC)] */ if (riff_size+0x08+0x01 == file_size) riff_size += 0x01; /* some Xbox games do this [Dynasty Warriors 3 (Xbox), BloodRayne (Xbox)] */ if (riff_size == file_size && read_16bitLE(0x14,streamFile)==0x0069) riff_size -= 0x08; /* some Dreamcast/Naomi games do this [Headhunter (DC), Bomber hehhe (DC)] */ if (riff_size + 0x04 == file_size && read_16bitLE(0x14,streamFile)==0x0000) riff_size -= 0x04; /* some PC games do this [Halo 2 (PC)] */ if (riff_size + 0x04 == file_size && read_16bitLE(0x14,streamFile)==0x0069) riff_size -= 0x04; /* check for truncated RIFF */ if (file_size < riff_size+0x08) goto fail; /* read through chunks to verify format and find metadata */ { off_t current_chunk = 0xc; /* start with first chunk */ while (current_chunk < file_size && current_chunk < riff_size+8) { uint32_t chunk_type = read_32bitBE(current_chunk,streamFile); size_t chunk_size = read_32bitLE(current_chunk+4,streamFile); if (fmt.codec == 0x6771 && chunk_type == 0x64617461) /* Liar-soft again */ chunk_size += (chunk_size%2) ? 0x01 : 0x00; if (current_chunk+0x08+chunk_size > file_size) goto fail; switch(chunk_type) { case 0x666d7420: /* "fmt " */ if (FormatChunkFound) goto fail; /* only one per file */ FormatChunkFound = 1; if (-1 == read_fmt(0, /* big endian == false*/ streamFile, current_chunk, &fmt, mwv)) goto fail; /* some Dreamcast/Naomi games again [Headhunter (DC), Bomber hehhe (DC)] */ if (fmt.codec == 0x0000 && chunk_size == 0x12) chunk_size += 0x02; break; case 0x64617461: /* "data" */ if (DataChunkFound) goto fail; /* only one per file */ DataChunkFound = 1; start_offset = current_chunk + 0x08; data_size = chunk_size; break; case 0x4C495354: /* "LIST" */ /* what lurks within?? */ switch (read_32bitBE(current_chunk+0x08, streamFile)) { case 0x6164746C: /* "adtl" */ /* yay, atdl is its own little world */ parse_adtl(current_chunk + 8, chunk_size, streamFile, &loop_start_ms,&loop_end_ms,&loop_flag); break; default: break; } break; case 0x736D706C: /* "smpl" (RIFFMIDISample + MIDILoop chunk) */ /* check loop count/loop info (most common) *///todo double check values /* 0x00: manufacturer id, 0x04: product id, 0x08: sample period, 0x0c: unity node, * 0x10: pitch fraction, 0x14: SMPTE format, 0x18: SMPTE offset, 0x1c: loop count, 0x20: sampler data */ if (read_32bitLE(current_chunk+0x08+0x1c, streamFile)==1) { /* 0x24: cue point id, 0x28: type (0=forward, 1=alternating, 2=backward) * 0x2c: start, 0x30: end, 0x34: fraction, 0x38: play count */ if (read_32bitLE(current_chunk+0x08+0x28, streamFile)==0) { loop_flag = 1; loop_start_smpl = read_32bitLE(current_chunk+0x08+0x2c, streamFile); loop_end_smpl = read_32bitLE(current_chunk+0x08+0x30, streamFile); } } break; case 0x77736D70: /* "wsmp" (RIFFDLSSample + DLSLoop chunk) */ /* check loop count/info (found in some Xbox games: Halo (non-looping), Dynasty Warriors 3, Crimson Sea) */ /* 0x00: size, 0x04: unity note, 0x06: fine tune, 0x08: gain, 0x10: loop count */ if (chunk_size >= 0x24 && read_32bitLE(current_chunk+0x08+0x00, streamFile) == 0x14 && read_32bitLE(current_chunk+0x08+0x10, streamFile) > 0 && read_32bitLE(current_chunk+0x08+0x14, streamFile) == 0x10) { /* 0x14: size, 0x18: loop type (0=forward, 1=release), 0x1c: loop start, 0x20: loop length */ if (read_32bitLE(current_chunk+0x08+0x18, streamFile)==0) { loop_flag = 1; loop_start_wsmp = read_32bitLE(current_chunk+0x08+0x1c, streamFile); loop_end_wsmp = read_32bitLE(current_chunk+0x08+0x20, streamFile); loop_end_wsmp += loop_start_wsmp; } } break; case 0x66616374: /* "fact" */ if (chunk_size == 0x04) { /* standard, usually found with ADPCM */ fact_sample_count = read_32bitLE(current_chunk+0x08, streamFile); } else if (chunk_size == 0x10 && read_32bitBE(current_chunk+0x08+0x04, streamFile) == 0x4C794E20) { /* "LyN " */ goto fail; /* parsed elsewhere */ } else if ((at3 || at9) && chunk_size == 0x08) { fact_sample_count = read_32bitLE(current_chunk+0x08, streamFile); fact_sample_skip = read_32bitLE(current_chunk+0x0c, streamFile); } else if ((at3 || at9) && chunk_size == 0x0c) { fact_sample_count = read_32bitLE(current_chunk+0x08, streamFile); fact_sample_skip = read_32bitLE(current_chunk+0x10, streamFile); } break; case 0x70666c74: /* "pflt" (.mwv extension) */ if (!mwv) break; /* ignore if not in an mwv */ mwv_pflt_offset = current_chunk; /* predictor filters */ break; case 0x6374726c: /* "ctrl" (.mwv extension) */ if (!mwv) break; loop_flag = read_32bitLE(current_chunk+0x08, streamFile); mwv_ctrl_offset = current_chunk; break; case 0x4A554E4B: /* "JUNK" */ JunkFound = 1; break; default: /* ignorance is bliss */ break; } current_chunk += 8+chunk_size; } } if (!FormatChunkFound || !DataChunkFound) goto fail; //todo improve detection using fmt sizes/values as Wwise's don't match the RIFF standard /* JUNK is an optional Wwise chunk, and Wwise hijacks the MSADPCM/MS_IMA/XBOX IMA ids (how nice). * To ensure their stuff is parsed in wwise.c we reject their JUNK, which they put almost always. * As JUNK is legal (if unusual) we only reject those codecs. * (ex. Cave PC games have PCM16LE + JUNK + smpl created by "Samplitude software") */ if (JunkFound && check_extensions(streamFile,"wav,lwav") /* for some .MED IMA */ && (fmt.coding_type==coding_MSADPCM /*|| fmt.coding_type==coding_MS_IMA*/ || fmt.coding_type==coding_XBOX_IMA)) goto fail; /* ignore Beyond Good & Evil HD PS3 evil reuse of PCM codec */ if (fmt.coding_type == coding_PCM16LE && read_32bitBE(start_offset+0x00, streamFile) == 0x4D534643 && /* "MSF\43" */ read_32bitBE(start_offset+0x34, streamFile) == 0xFFFFFFFF && /* always */ read_32bitBE(start_offset+0x38, streamFile) == 0xFFFFFFFF && read_32bitBE(start_offset+0x3c, streamFile) == 0xFFFFFFFF) goto fail; #ifdef VGM_USE_VORBIS /* special case using init_vgmstream_ogg_vorbis */ if (fmt.coding_type == coding_OGG_VORBIS) { return parse_riff_ogg(streamFile, start_offset, data_size); } #endif /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(fmt.channel_count,loop_flag); if (!vgmstream) goto fail; vgmstream->sample_rate = fmt.sample_rate; /* init, samples */ switch (fmt.coding_type) { case coding_PCM16LE: vgmstream->num_samples = pcm_bytes_to_samples(data_size, fmt.channel_count, 16); break; case coding_PCM8_U_int: vgmstream->num_samples = pcm_bytes_to_samples(data_size, vgmstream->channels, 8); break; case coding_L5_555: if (!mwv) goto fail; vgmstream->num_samples = data_size / 0x12 / fmt.channel_count * 32; /* coefs */ { int i, ch; const int filter_order = 3; int filter_count = read_32bitLE(mwv_pflt_offset+0x0c, streamFile); if (filter_count > 0x20) goto fail; if (mwv_pflt_offset == -1 || read_32bitLE(mwv_pflt_offset+0x08, streamFile) != filter_order || read_32bitLE(mwv_pflt_offset+0x04, streamFile) < 8 + filter_count * 4 * filter_order) goto fail; for (ch = 0; ch < fmt.channel_count; ch++) { for (i = 0; i < filter_count * filter_order; i++) { int coef = read_32bitLE(mwv_pflt_offset+0x10+i*0x04, streamFile); vgmstream->ch[ch].adpcm_coef_3by32[i] = coef; } } } break; case coding_MSADPCM: vgmstream->num_samples = msadpcm_bytes_to_samples(data_size, fmt.block_size, fmt.channel_count); if (fact_sample_count && fact_sample_count < vgmstream->num_samples) vgmstream->num_samples = fact_sample_count; break; case coding_MS_IMA: vgmstream->num_samples = ms_ima_bytes_to_samples(data_size, fmt.block_size, fmt.channel_count); if (fact_sample_count && fact_sample_count < vgmstream->num_samples) vgmstream->num_samples = fact_sample_count; break; case coding_AICA: case coding_AICA_int: vgmstream->num_samples = aica_bytes_to_samples(data_size, fmt.channel_count); break; case coding_XBOX_IMA: vgmstream->num_samples = xbox_ima_bytes_to_samples(data_size, fmt.channel_count); if (fact_sample_count && fact_sample_count < vgmstream->num_samples) vgmstream->num_samples = fact_sample_count; /* some (converted?) Xbox games have bigger fact_samples */ break; #ifdef VGM_USE_FFMPEG case coding_FFmpeg: { ffmpeg_codec_data *ffmpeg_data = init_ffmpeg_offset(streamFile, 0x00, streamFile->get_size(streamFile)); if ( !ffmpeg_data ) goto fail; vgmstream->codec_data = ffmpeg_data; vgmstream->num_samples = ffmpeg_data->totalSamples; /* fact_sample_count */ if (at3) { /* the encoder introduces some garbage (not always silent) samples to skip before the stream */ /* manually set skip_samples if FFmpeg didn't do it */ if (ffmpeg_data->skipSamples <= 0) { ffmpeg_set_skip_samples(ffmpeg_data, fact_sample_skip); } /* RIFF loop/sample values are absolute (with skip samples), adjust */ if (loop_flag) { loop_start_smpl -= (int32_t)ffmpeg_data->skipSamples; loop_end_smpl -= (int32_t)ffmpeg_data->skipSamples; } } break; } #endif #ifdef VGM_USE_MAIATRAC3PLUS case coding_AT3plus: { vgmstream->codec_data = init_at3plus(); /* get rough total samples but favor fact_samples if available (skip isn't correctly handled for now) */ vgmstream->num_samples = atrac3plus_bytes_to_samples(data_size, fmt.block_size); if (fact_sample_count > 0 && fact_sample_count + fact_sample_skip < vgmstream->num_samples) vgmstream->num_samples = fact_sample_count + fact_sample_skip; break; } #endif #ifdef VGM_USE_ATRAC9 case coding_ATRAC9: { atrac9_config cfg = {0}; cfg.channels = vgmstream->channels; cfg.config_data = read_32bitBE(fmt.offset+0x08+0x2c,streamFile); cfg.encoder_delay = fact_sample_skip; vgmstream->codec_data = init_atrac9(&cfg); if (!vgmstream->codec_data) goto fail; vgmstream->num_samples = fact_sample_count; /* RIFF loop/sample values are absolute (with skip samples), adjust */ if (loop_flag) { loop_start_smpl -= fact_sample_skip; loop_end_smpl -= fact_sample_skip; } break; } #endif default: goto fail; } /* coding, layout, interleave */ vgmstream->coding_type = fmt.coding_type; switch (fmt.coding_type) { case coding_MSADPCM: case coding_MS_IMA: case coding_AICA: case coding_XBOX_IMA: #ifdef VGM_USE_FFMPEG case coding_FFmpeg: #endif #ifdef VGM_USE_MAIATRAC3PLUS case coding_AT3plus: #endif #ifdef VGM_USE_ATRAC9 case coding_ATRAC9: #endif vgmstream->layout_type = layout_none; vgmstream->interleave_block_size = fmt.block_size; break; default: vgmstream->layout_type = layout_interleave; vgmstream->interleave_block_size = fmt.interleave; break; } /* meta, loops */ vgmstream->meta_type = meta_RIFF_WAVE; if (loop_flag) { if (loop_start_ms >= 0) { vgmstream->loop_start_sample = (long long)loop_start_ms*fmt.sample_rate/1000; vgmstream->loop_end_sample = (long long)loop_end_ms*fmt.sample_rate/1000; vgmstream->meta_type = meta_RIFF_WAVE_labl; } else if (loop_start_smpl >= 0) { vgmstream->loop_start_sample = loop_start_smpl; vgmstream->loop_end_sample = loop_end_smpl; vgmstream->meta_type = meta_RIFF_WAVE_smpl; } else if (loop_start_wsmp >= 0) { vgmstream->loop_start_sample = loop_start_wsmp; vgmstream->loop_end_sample = loop_end_wsmp; vgmstream->meta_type = meta_RIFF_WAVE_wsmp; } else if (mwv && mwv_ctrl_offset != -1) { vgmstream->loop_start_sample = read_32bitLE(mwv_ctrl_offset+12, streamFile); vgmstream->loop_end_sample = vgmstream->num_samples; } } if (mwv) { vgmstream->meta_type = meta_RIFF_WAVE_MWV; } if ( !vgmstream_open_stream(vgmstream,streamFile,start_offset) ) goto fail; return vgmstream; fail: close_vgmstream(vgmstream); return NULL; } VGMSTREAM * init_vgmstream_rifx(STREAMFILE *streamFile) { VGMSTREAM * vgmstream = NULL; riff_fmt_chunk fmt = {0}; size_t file_size, riff_size, data_size = 0; off_t start_offset = 0; int loop_flag = 0; off_t loop_start_offset = -1; off_t loop_end_offset = -1; int FormatChunkFound = 0, DataChunkFound = 0; /* check extension, case insensitive */ if ( !check_extensions(streamFile, "wav,lwav") ) goto fail; /* check header */ if (read_32bitBE(0x00,streamFile) != 0x52494658) /* "RIFX" */ goto fail; if (read_32bitBE(0x08,streamFile) != 0x57415645) /* "WAVE" */ goto fail; riff_size = read_32bitBE(0x04,streamFile); file_size = get_streamfile_size(streamFile); /* check for truncated RIFF */ if (file_size < riff_size+8) goto fail; /* read through chunks to verify format and find metadata */ { off_t current_chunk = 0xc; /* start with first chunk */ while (current_chunk < file_size && current_chunk < riff_size+8) { uint32_t chunk_type = read_32bitBE(current_chunk,streamFile); off_t chunk_size = read_32bitBE(current_chunk+4,streamFile); if (current_chunk+8+chunk_size > file_size) goto fail; switch(chunk_type) { case 0x666d7420: /* "fmt " */ /* only one per file */ if (FormatChunkFound) goto fail; FormatChunkFound = 1; if (-1 == read_fmt(1, /* big endian == true */ streamFile, current_chunk, &fmt, 0)) /* mwv == false */ goto fail; break; case 0x64617461: /* data */ /* at most one per file */ if (DataChunkFound) goto fail; DataChunkFound = 1; start_offset = current_chunk + 8; data_size = chunk_size; break; case 0x736D706C: /* smpl */ /* check loop count and loop info */ if (read_32bitBE(current_chunk+0x24, streamFile)==1) { if (read_32bitBE(current_chunk+0x2c+4, streamFile)==0) { loop_flag = 1; loop_start_offset = read_32bitBE(current_chunk+0x2c+8, streamFile); loop_end_offset = read_32bitBE(current_chunk+0x2c+0xc,streamFile); } } break; default: /* ignorance is bliss */ break; } current_chunk += 8+chunk_size; } } if (!FormatChunkFound || !DataChunkFound) goto fail; /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(fmt.channel_count,loop_flag); if (!vgmstream) goto fail; vgmstream->sample_rate = fmt.sample_rate; /* init, samples */ switch (fmt.coding_type) { case coding_PCM16BE: vgmstream->num_samples = pcm_bytes_to_samples(data_size, vgmstream->channels, 16); break; case coding_PCM8_U_int: vgmstream->num_samples = pcm_bytes_to_samples(data_size, vgmstream->channels, 8); break; default: goto fail; } /* coding, layout, interleave */ vgmstream->coding_type = fmt.coding_type; switch (fmt.coding_type) { default: vgmstream->layout_type = layout_interleave; vgmstream->interleave_block_size = fmt.interleave; break; } /* meta, loops */ vgmstream->meta_type = meta_RIFX_WAVE; if (loop_flag) { if (loop_start_offset >= 0) { vgmstream->loop_start_sample = loop_start_offset; vgmstream->loop_end_sample = loop_end_offset; vgmstream->meta_type = meta_RIFX_WAVE_smpl; } } if ( !vgmstream_open_stream(vgmstream,streamFile,start_offset) ) goto fail; return vgmstream; fail: close_vgmstream(vgmstream); return NULL; } #ifdef VGM_USE_VORBIS typedef struct { off_t patch_offset; } riff_ogg_io_data; static size_t riff_ogg_io_read(STREAMFILE *streamfile, uint8_t *dest, off_t offset, size_t length, riff_ogg_io_data* data) { size_t bytes_read = streamfile->read(streamfile, dest, offset, length); /* has garbage init Oggs pages, patch bad flag */ if (data->patch_offset && data->patch_offset >= offset && data->patch_offset < offset + bytes_read) { VGM_ASSERT(dest[data->patch_offset - offset] != 0x02, "RIFF Ogg: bad patch offset\n"); dest[data->patch_offset - offset] = 0x00; } return bytes_read; } /* special handling of Liar-soft's buggy RIFF+Ogg made with Soundforge [Shikkoku no Sharnoth (PC)] */ static VGMSTREAM *parse_riff_ogg(STREAMFILE * streamFile, off_t start_offset, size_t data_size) { off_t patch_offset = 0; size_t real_size = data_size; /* initial page flag is repeated and causes glitches in decoders, find bad offset */ { off_t offset = start_offset + 0x04+0x02; off_t offset_limit = start_offset + data_size; /* usually in the first 0x3000 but can be +0x100000 */ while (offset < offset_limit) { if (read_32bitBE(offset+0x00, streamFile) == 0x4f676753 && /* "OggS" */ read_16bitBE(offset+0x04, streamFile) == 0x0002) { /* start page flag */ //todo callback should patch on-the-fly by analyzing all "OggS", but is problematic due to arbitrary offsets if (patch_offset) { VGM_LOG("RIFF Ogg: found multiple repeated start pages\n"); return NULL; } patch_offset = offset /*- start_offset*/ + 0x04+0x01; } offset++; //todo could be optimized to do OggS page sizes } } /* last pages don't have the proper flag and confuse decoders, find actual end */ { size_t max_size = data_size; off_t offset_limit = start_offset + data_size - 0x1000; /* not worth checking more, let decoder try */ off_t offset = start_offset + data_size - 0x1a; while (offset > offset_limit) { if (read_32bitBE(offset+0x00, streamFile) == 0x4f676753) { /* "OggS" */ if (read_16bitBE(offset+0x04, streamFile) == 0x0004) { /* last page flag */ real_size = max_size; break; } else { max_size = offset - start_offset; /* ignore bad pages */ } } offset--; } } /* Soundforge includes fact_samples but should be equal to Ogg samples */ /* actual Ogg init with custom callback to patch weirdness */ { VGMSTREAM *vgmstream = NULL; STREAMFILE *custom_streamFile = NULL; ogg_vorbis_meta_info_t ovmi = {0}; riff_ogg_io_data io_data = {0}; size_t io_data_size = sizeof(riff_ogg_io_data); ovmi.meta_type = meta_RIFF_WAVE; ovmi.stream_size = real_size; //inf.loop_flag = 0; /* not observed */ io_data.patch_offset = patch_offset; custom_streamFile = open_io_streamfile(open_wrap_streamfile(streamFile), &io_data,io_data_size, riff_ogg_io_read,NULL); if (!custom_streamFile) return NULL; vgmstream = init_vgmstream_ogg_vorbis_callbacks(custom_streamFile, NULL, start_offset, &ovmi); close_streamfile(custom_streamFile); return vgmstream; } } #endif