#include "meta.h" #include "../layout/layout.h" #include "../util.h" /* Westwood Studios .aud (WS-AUD) */ VGMSTREAM * init_vgmstream_ws_aud(STREAMFILE *streamFile) { VGMSTREAM * vgmstream = NULL; char filename[260]; coding_t coding_type = -1; int channel_count; int new_type = 0; /* if 0 is old type */ int bytes_per_sample = 0; /* check extension, case insensitive */ streamFile->get_name(streamFile,filename,sizeof(filename)); if (strcasecmp("aud",filename_extension(filename))) goto fail; /* check for 0x0000DEAF chunk marker for first chunk */ if (read_32bitLE(0x10,streamFile)==0x0000DEAF) { /* new */ new_type = 1; } else if (read_32bitLE(0x08,streamFile)==0x0000DEAF) { /* old (?) */ new_type = 0; } else goto fail; if (!new_type) goto fail; /* TODO: not yet supported */ /* get channel count */ if (read_8bit(0xa,streamFile) & 1) channel_count = 2; else channel_count = 1; if (channel_count == 2) goto fail; /* TODO: not yet supported */ /* get output format */ if (read_8bit(0xa,streamFile) & 2) bytes_per_sample = 2; else bytes_per_sample = 1; if (bytes_per_sample == 1) goto fail; /* TODO: not yet supported */ /* check codec type */ switch (read_8bit(0xb,streamFile)) { case 1: /* Westwood custom */ goto fail; /* TODO: not yet supported */ break; case 99: /* IMA ADPCM */ coding_type = coding_IMA; break; default: goto fail; break; } /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channel_count,0); if (!vgmstream) goto fail; /* fill in the vital statistics */ vgmstream->num_samples = read_32bitLE(0x06,streamFile)/bytes_per_sample/channel_count; vgmstream->sample_rate = (uint16_t)read_16bitLE(0x00,streamFile); vgmstream->coding_type = coding_type; if (new_type) { vgmstream->meta_type = meta_WS_AUD; } else { vgmstream->meta_type = meta_WS_AUD_old; } vgmstream->layout_type = layout_ws_aud_blocked; /* open the file for reading by each channel */ { int i; STREAMFILE * file; file = streamFile->open(streamFile,filename, STREAMFILE_DEFAULT_BUFFER_SIZE); if (!file) goto fail; for (i=0;ich[i].streamfile = file; } } /* start me up */ if (new_type) { ws_aud_block_update(0xc,vgmstream); } else { ws_aud_block_update(0x8,vgmstream); } return vgmstream; /* clean up anything we may have opened */ fail: if (vgmstream) close_vgmstream(vgmstream); return NULL; }