#include "meta.h" #include "../util.h" /* ZWDSP (hcs' custom DSP files from Zack & Wiki) */ VGMSTREAM * init_vgmstream_zwdsp(STREAMFILE *streamFile) { VGMSTREAM * vgmstream = NULL; char filename[260]; int second_channel_start; int loop_flag; int channel_count = 2; off_t start_offset; /* check extension, case insensitive */ streamFile->get_name(streamFile,filename,sizeof(filename)); if (strcasecmp("zwdsp",filename_extension(filename))) goto fail; /* check header */ if (read_32bitBE(0x00,streamFile) != 0x00000000) /* 0x0 */ goto fail; /* Retrieve the loop flag, some files have 0x0 and some 0x02 as "no loop" */ switch (read_32bitBE(0x10, streamFile)) { case 0: case 2: loop_flag = 0; break; default: loop_flag = 1; } /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channel_count,loop_flag); if (!vgmstream) goto fail; /* fill in the vital statistics */ start_offset = 0x90; vgmstream->channels = channel_count; vgmstream->sample_rate = read_32bitBE(0x08,streamFile); vgmstream->coding_type = coding_NGC_DSP; vgmstream->num_samples = read_32bitBE(0x18,streamFile)*14/8/channel_count; if (loop_flag) { vgmstream->loop_start_sample = read_32bitBE(0x10,streamFile)*14/8/channel_count; vgmstream->loop_end_sample = read_32bitBE(0x14,streamFile)*14/8/channel_count; } vgmstream->layout_type = layout_none; vgmstream->meta_type = meta_ZWDSP; if (vgmstream->coding_type == coding_NGC_DSP) { int i; for (i=0;i<16;i++) { vgmstream->ch[0].adpcm_coef[i] = read_16bitBE(0x20+i*2,streamFile); } if (vgmstream->channels == 2) { for (i=0;i<16;i++) { vgmstream->ch[1].adpcm_coef[i] = read_16bitBE(0x60+i*2,streamFile); } } } second_channel_start = (get_streamfile_size(streamFile)+start_offset)/2; { 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[0].channel_start_offset=start_offset; if (channel_count == 2) { if (second_channel_start == -1) goto fail; vgmstream->ch[1].channel_start_offset=second_channel_start; } vgmstream->ch[i].offset = vgmstream->ch[i].channel_start_offset; } } return vgmstream; /* clean up anything we may have opened */ fail: if (vgmstream) close_vgmstream(vgmstream); return NULL; }