#include "meta.h" #include "../util.h" /* DVI (Castlevania Symphony of the Night) */ VGMSTREAM * init_vgmstream_dvi(STREAMFILE *streamFile) { VGMSTREAM * vgmstream = NULL; char filename[PATH_LIMIT]; off_t start_offset; int loop_flag = 0; int channel_count; /* check extension, case insensitive */ streamFile->get_name(streamFile,filename,sizeof(filename)); if (strcasecmp("dvi",filename_extension(filename))) goto fail; /* check header */ if (read_32bitBE(0x00,streamFile) != 0x4456492E) /* "DVI." */ goto fail; loop_flag = (read_32bitBE(0x0C,streamFile)!=0xFFFFFFFF); channel_count = 2; /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channel_count,loop_flag); if (!vgmstream) goto fail; /* fill in the vital statistics */ vgmstream->channels = channel_count; start_offset = read_32bitBE(0x04,streamFile); vgmstream->sample_rate = 44100; vgmstream->coding_type = coding_DVI_IMA_int; vgmstream->num_samples = read_32bitBE(0x08,streamFile); if (loop_flag) { vgmstream->loop_start_sample = read_32bitBE(0x0C,streamFile); vgmstream->loop_end_sample = read_32bitBE(0x08,streamFile); } vgmstream->layout_type = layout_interleave; vgmstream->interleave_block_size = 4; vgmstream->meta_type = meta_DVI; vgmstream->get_high_nibble=1; /* open the file for reading */ { int i; STREAMFILE * file; 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+(i*vgmstream->interleave_block_size); vgmstream->ch[i].adpcm_history1_32=0; vgmstream->ch[i].adpcm_step_index=0; } } return vgmstream; /* clean up anything we may have opened */ fail: if (vgmstream) close_vgmstream(vgmstream); return NULL; }