#include "meta.h" #include "../util.h" /* Her Interactive Sound .his (Nancy Drew) */ /* A somewhat transformed RIFF WAVE */ VGMSTREAM * init_vgmstream_his(STREAMFILE *streamFile) { VGMSTREAM * vgmstream = NULL; char filename[260]; int channel_count; int loop_flag = 0; int bps = 0; off_t start_offset; const uint8_t header_magic_expected[0x16] = "Her Interactive Sound\x1a"; uint8_t header_magic[0x16]; /* check extension, case insensitive */ streamFile->get_name(streamFile,filename,sizeof(filename)); if (strcasecmp("his",filename_extension(filename))) goto fail; /* check header magic */ if (0x16 != streamFile->read(streamFile, header_magic, 0, 0x16)) goto fail; if (memcmp(header_magic_expected, header_magic, 0x16)) goto fail; /* data chunk label */ if (0x64617461 != read_32bitBE(0x24,streamFile)) goto fail; start_offset = 0x2c; channel_count = read_16bitLE(0x16,streamFile); /* 8-bit or 16-bit expected */ switch (read_16bitLE(0x22,streamFile)) { case 8: bps = 1; break; case 16: bps = 2; break; default: goto fail; } /* check bytes per frame */ if (read_16bitLE(0x20,streamFile) != channel_count*bps) goto fail; /* check size */ /* file size -8 */ if ((read_32bitLE(0x1c,streamFile)+8) != get_streamfile_size(streamFile)) goto fail; /* data chunk size, assume it occupies the rest of the file */ //if ((read_32bitLE(0x28,streamFile)+start_offset) != get_streamfile_size(streamFile)) // goto fail; /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channel_count,loop_flag); if (!vgmstream) goto fail; /* fill in the vital statistics */ vgmstream->num_samples = read_32bitLE(0x28,streamFile) / channel_count / bps; vgmstream->sample_rate = read_32bitLE(0x18,streamFile); vgmstream->meta_type = meta_HIS; vgmstream->layout_type = layout_none; if (bps == 2) { vgmstream->coding_type = coding_PCM16LE; if (channel_count == 2) { vgmstream->coding_type = coding_PCM16LE_int; vgmstream->interleave_block_size = 2; } } else // bps == 1 { vgmstream->coding_type = coding_PCM8_U; if (channel_count == 2) { vgmstream->coding_type = coding_PCM8_U_int; vgmstream->interleave_block_size = 1; } } /* open the file for reading */ { STREAMFILE * file; file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE); if (!file) goto fail; vgmstream->ch[0].streamfile = file; vgmstream->ch[0].channel_start_offset= vgmstream->ch[0].offset=start_offset; if (channel_count == 2) { file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE); if (!file) goto fail; vgmstream->ch[1].streamfile = file; vgmstream->ch[0].channel_start_offset= vgmstream->ch[1].offset=start_offset + vgmstream->interleave_block_size; } } return vgmstream; /* clean up anything we may have opened */ fail: if (vgmstream) close_vgmstream(vgmstream); return NULL; }