VGMSTREAM * init_vgmstream_xbox_matx(STREAMFILE *streamFile) { VGMSTREAM * vgmstream = NULL; char filename[PATH_LIMIT]; int loop_flag=0; int channel_count; int i; /* check extension, case insensitive */ streamFile->get_name(streamFile,filename,sizeof(filename)); if (strcasecmp("matx",filename_extension(filename))) goto fail; loop_flag = 0; channel_count=read_16bitLE(0x4,streamFile); /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channel_count,loop_flag); if (!vgmstream) goto fail; /* fill in the vital statistics */ vgmstream->channels = channel_count; vgmstream->sample_rate = read_16bitLE(0x06,streamFile) & 0xffff; vgmstream->coding_type = coding_XBOX; vgmstream->layout_type = layout_matx_blocked; vgmstream->meta_type = meta_XBOX_MATX; /* open the file for reading by each channel */ { for (i=0;i<channel_count;i++) { vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,36); if (!vgmstream->ch[i].streamfile) goto fail; } } /* Calc num_samples */ matx_block_update(0,vgmstream); vgmstream->num_samples=0; do { vgmstream->num_samples += vgmstream->current_block_size/36*64; matx_block_update(vgmstream->next_block_offset,vgmstream); } while (vgmstream->next_block_offset<get_streamfile_size(streamFile)); matx_block_update(0,vgmstream); return vgmstream; /* clean up anything we may have opened */ fail: if (vgmstream) close_vgmstream(vgmstream); return NULL; }
void render_vgmstream_blocked(sample * buffer, int32_t sample_count, VGMSTREAM * vgmstream) { int samples_written=0; int frame_size = get_vgmstream_frame_size(vgmstream); int samples_per_frame = get_vgmstream_samples_per_frame(vgmstream); int samples_this_block; if (frame_size == 0) { /* assume 4 bit */ /* TODO: get_vgmstream_frame_size() really should return bits... */ samples_this_block = vgmstream->current_block_size * 2 * samples_per_frame; } else { samples_this_block = vgmstream->current_block_size / frame_size * samples_per_frame; } while (samples_written<sample_count) { int samples_to_do; if (vgmstream->loop_flag && vgmstream_do_loop(vgmstream)) { if (frame_size == 0) { samples_this_block = vgmstream->current_block_size * 2 * samples_per_frame; } else { samples_this_block = vgmstream->current_block_size / frame_size * samples_per_frame; } continue; } samples_to_do = vgmstream_samples_to_do(samples_this_block, samples_per_frame, vgmstream); if (samples_written+samples_to_do > sample_count) samples_to_do=sample_count-samples_written; if (vgmstream->current_block_offset>=0) decode_vgmstream(vgmstream, samples_written, samples_to_do, buffer); else { int i; /* we've run off the end! */ for (i=samples_written*vgmstream->channels; i<(samples_written+samples_to_do)*vgmstream->channels; i++) buffer[i]=0; } samples_written += samples_to_do; vgmstream->current_sample += samples_to_do; vgmstream->samples_into_block+=samples_to_do; if (vgmstream->samples_into_block==samples_this_block) { switch (vgmstream->layout_type) { case layout_ast_blocked: ast_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_halpst_blocked: if (vgmstream->next_block_offset>=0) halpst_block_update(vgmstream->next_block_offset,vgmstream); else vgmstream->current_block_offset=-1; break; case layout_xa_blocked: xa_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_ea_blocked: ea_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_eacs_blocked: eacs_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_caf_blocked: caf_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_wsi_blocked: wsi_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_str_snds_blocked: str_snds_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_ws_aud_blocked: ws_aud_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_matx_blocked: matx_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_de2_blocked: de2_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_emff_ps2_blocked: emff_ps2_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_emff_ngc_blocked: emff_ngc_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_gsb_blocked: gsb_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_vs_blocked: vs_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_xvas_blocked: xvas_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_thp_blocked: thp_block_update(vgmstream->next_block_offset,vgmstream); break; case layout_filp_blocked: filp_block_update(vgmstream->next_block_offset,vgmstream); break; default: break; } /* for VBR these may change */ frame_size = get_vgmstream_frame_size(vgmstream); samples_per_frame = get_vgmstream_samples_per_frame(vgmstream); if (frame_size == 0) { samples_this_block = vgmstream->current_block_size * 2 * samples_per_frame; } else { samples_this_block = vgmstream->current_block_size / frame_size * samples_per_frame; } vgmstream->samples_into_block=0; } } }