diff --git a/src/meta/isb.c b/src/meta/isb.c index de24493e..c98cbf1a 100644 --- a/src/meta/isb.c +++ b/src/meta/isb.c @@ -7,7 +7,7 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { VGMSTREAM * vgmstream = NULL; off_t start_offset = 0, name_offset = 0; size_t stream_size = 0, name_size = 0; - int loop_flag = 0, channel_count = 0, sample_rate = 0, codec = 0, pcm_bytes = 0, bps = 0; + int loop_flag = 0, channels = 0, sample_rate = 0, codec = 0, pcm_bytes = 0, bps = 0; int total_subsongs, target_subsong = sf->stream_index; uint32_t (*read_u32me)(off_t,STREAMFILE*); uint32_t (*read_u32ce)(off_t,STREAMFILE*); @@ -18,15 +18,15 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { if (!check_extensions(sf, "isb")) goto fail; - big_endian = read_u32be(0x00,sf) == 0x46464952; /* "FFIR" */ + big_endian = read_u32be(0x00,sf) == get_id32be("FFIR"); /* PS3, most X360 */ read_u32me = big_endian ? read_u32be : read_u32le; /* machine endianness... */ read_u32ce = big_endian ? read_u32le : read_u32be; /* chunks change with endianness but this just reads as BE */ - if (read_u32ce(0x00,sf) != 0x52494646) /* "RIFF" */ + if (read_u32ce(0x00,sf) != get_id32be("RIFF")) goto fail; if (read_u32me(0x04,sf) + 0x08 != get_streamfile_size(sf)) goto fail; - if (read_u32ce(0x08,sf) != 0x69736266) /* "isbf" */ + if (read_u32ce(0x08,sf) != get_id32be("isbf")) goto fail; /* some files have a companion .icb, seems to be a cue file pointing here */ @@ -36,7 +36,7 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { * seems to use the format as a simple audio bank. Psychonauts Xbox/PS2 doesn't use ISACT. */ { - off_t offset, max_offset, header_offset = 0; + off_t offset, max_offset, header_offset = 0, suboffset, submax_offset; size_t header_size = 0; total_subsongs = 0; /* not specified */ @@ -50,16 +50,51 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { uint32_t chunk_size = read_u32me(offset + 0x04,sf); offset += 0x08; + //VGM_LOG("offset=%lx, sub=%c%c%c%c\n", offset,(chunk_type>>24 & 0xFF), (chunk_type>>16 & 0xFF), (chunk_type>>8 & 0xFF), (chunk_type & 0xFF)); + + switch(chunk_type) { case 0x4C495354: /* "LIST" */ - if (read_u32ce(offset, sf) != 0x73616D70) /* "samp" */ - break; /* there are "bfob" LIST without data */ - - total_subsongs++; - if (target_subsong == total_subsongs && header_offset == 0) { - header_offset = offset; - header_size = chunk_size; + if (read_u32ce(offset, sf) == get_id32be("samp")) { + /* sample header */ + total_subsongs++; + if (target_subsong == total_subsongs && header_offset == 0) { + header_offset = offset; + header_size = chunk_size; + } } + else if (read_u32ce(offset, sf) == get_id32be("fldr")) { + /* subfolder with another LIST inside, for example "stingers" > N smpl (seen in some music_bank) */ + + suboffset = offset + 0x04; + submax_offset = offset + chunk_size; + while (suboffset < submax_offset) { + uint32_t subchunk_type = read_u32ce(suboffset + 0x00,sf); + uint32_t subchunk_size = read_u32me(suboffset + 0x04,sf); + suboffset += 0x08; + + if (subchunk_type == get_id32be("LIST")) { + uint32_t subsubchunk_type = read_u32ce(suboffset, sf); + + if (subsubchunk_type == get_id32be("samp")) { + total_subsongs++; + if (target_subsong == total_subsongs && header_offset == 0) { + header_offset = suboffset; + header_size = chunk_size; + } + } + else if (subsubchunk_type == get_id32be("fldr")) { + VGM_LOG("ISB: subfolder with subfolder at %lx\n", suboffset); + goto fail; + } + + //break; /* there can be N subLIST+samps */ + } + + suboffset += subchunk_size; + } + } + break; default: /* most are common chunks at the start that seem to contain defaults */ @@ -89,7 +124,7 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { break; case 0x63686E6B: /* "chnk" */ - channel_count = read_u32me(offset + 0x00, sf); + channels = read_u32me(offset + 0x00, sf); break; case 0x73696E66: /* "sinf" */ @@ -132,12 +167,12 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { } - /* some files are marked */ - loop_flag = 0; + /* some files are marked with "loop" but have value 0? */ + loop_flag = 0; /* build the VGMSTREAM */ - vgmstream = allocate_vgmstream(channel_count, loop_flag); + vgmstream = allocate_vgmstream(channels, loop_flag); if (!vgmstream) goto fail; vgmstream->meta_type = meta_ISB; @@ -163,13 +198,13 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { vgmstream->layout_type = layout_interleave; vgmstream->interleave_block_size = 0x02; } - vgmstream->num_samples = pcm_bytes_to_samples(stream_size, channel_count, bps); /* unsure about pcm_bytes */ + vgmstream->num_samples = pcm_bytes_to_samples(stream_size, channels, bps); /* unsure about pcm_bytes */ break; case 0x01: vgmstream->coding_type = coding_XBOX_IMA; vgmstream->layout_type = layout_none; - vgmstream->num_samples = xbox_ima_bytes_to_samples(stream_size, channel_count); /* pcm_bytes has excess data */ + vgmstream->num_samples = xbox_ima_bytes_to_samples(stream_size, channels); /* pcm_bytes has excess data */ break; #ifdef VGM_USE_VORBIS @@ -178,7 +213,7 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { if (!vgmstream->codec_data) goto fail; vgmstream->coding_type = coding_OGG_VORBIS; vgmstream->layout_type = layout_none; - vgmstream->num_samples = pcm_bytes / channel_count / (bps/8); + vgmstream->num_samples = pcm_bytes / channels / (bps/8); break; #endif @@ -199,7 +234,7 @@ VGMSTREAM * init_vgmstream_isb(STREAMFILE *sf) { vgmstream->coding_type = coding_FFmpeg; vgmstream->layout_type = layout_none; - vgmstream->num_samples = pcm_bytes / channel_count / (bps/8); + vgmstream->num_samples = pcm_bytes / channels / (bps/8); xma_fix_raw_samples(vgmstream, sf, start_offset, stream_size, fmt_offset, 1,1); break; }