137 lines
4.4 KiB
C
137 lines
4.4 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../util.h"
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/* RWSD is quite similar to BRSTM, but can contain several streams.
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* Still, some games use it for single streams. We only support the single stream form here */
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//TODO this meta is a hack as WSD is just note info, and data offsets are elsewhere,
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// while this assumes whatever data follows RWSD must belong to it; rework for Wii Sports
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VGMSTREAM* init_vgmstream_rwsd(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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size_t wave_length;
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int codec, channels, loop_flag;
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size_t stream_size;
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off_t start_offset, wave_offset = 0, labl_offset;
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if (!is_id32be(0x00, sf, "RWSD"))
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goto fail;
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if (!check_extensions(sf, "brwsd,rwsd"))
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goto fail;
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/* check header */
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switch (read_u32be(0x04, sf)) {
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case 0xFEFF0102:
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/* ideally we would look through the chunk list for a WAVE chunk,
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* but it's always in the same order */
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/* get WAVE offset, check */
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wave_offset = read_32bitBE(0x18,sf);
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if (!is_id32be(wave_offset + 0x00, sf, "WAVE"))
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goto fail;
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/* get WAVE size, check */
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wave_length = read_32bitBE(0x1c,sf);
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if (read_32bitBE(wave_offset + 0x04,sf) != wave_length)
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goto fail;
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/* check wave count */
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if (read_32bitBE(wave_offset + 0x08,sf) != 1)
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goto fail; /* only support 1 */
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break;
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case 0xFEFF0103: /* followed by RWAR, extract that or use .txth subfile */
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goto fail;
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}
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/* get type details */
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codec = read_u8(wave_offset+0x10,sf);
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loop_flag = read_u8(wave_offset+0x11,sf);
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channels = read_u8(wave_offset+0x12,sf);
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channels, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->num_samples = dsp_nibbles_to_samples(read_32bitBE(wave_offset+0x1c,sf));
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vgmstream->loop_start_sample = dsp_nibbles_to_samples(read_32bitBE(wave_offset+0x18,sf));
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vgmstream->sample_rate = (uint16_t)read_16bitBE(wave_offset + 0x14,sf);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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switch (codec) {
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case 0:
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vgmstream->coding_type = coding_PCM8;
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break;
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case 1:
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vgmstream->coding_type = coding_PCM16BE;
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break;
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case 2:
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vgmstream->coding_type = coding_NGC_DSP;
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break;
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default:
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goto fail;
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}
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vgmstream->layout_type = layout_none;
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vgmstream->meta_type = meta_RWSD;
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{
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off_t codec_info_offset;
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int i, j;
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for (j = 0 ; j < vgmstream->channels; j++) {
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// dummy for RWSD, must be a proper way to work this out
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codec_info_offset = wave_offset + 0x6c + j*0x30;
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if (vgmstream->coding_type == coding_NGC_DSP) {
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for (i = 0; i < 16; i++) {
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vgmstream->ch[j].adpcm_coef[i] = read_16bitBE(codec_info_offset + i*0x2, sf);
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}
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}
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}
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}
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/* this is just data size and following data may or may not be from this RWSD */
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start_offset = read_32bitBE(0x08, sf);
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if (is_id32be(start_offset, sf, "LABL")) {
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labl_offset = start_offset;
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start_offset += read_32bitBE(start_offset + 0x04, sf);
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read_string(vgmstream->stream_name, 0x28, labl_offset + 0x18, sf);
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}
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stream_size = read_32bitBE(wave_offset + 0x50,sf);
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/* this meta is a hack as WSD is just note info, and data offsets are elsewhere in the brsar,
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* while this assumes whatever data follows RWSD must belong to it (common but fails in Wii Sports),
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* detect data excess and reject (probably should use brawlbox's info offsets) */
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if (stream_size * channels + 0x10000 < get_streamfile_size(sf) - start_offset)
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goto fail;
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/* open the file for reading by each channel */
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{
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int i;
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char filename[PATH_LIMIT];
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sf->get_name(sf,filename,sizeof(filename));
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for (i = 0; i < channels; i++) {
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vgmstream->ch[i].streamfile = sf->open(sf,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!vgmstream->ch[i].streamfile) goto fail;
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vgmstream->ch[i].channel_start_offset = vgmstream->ch[i].offset =
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start_offset + i*stream_size;
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}
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}
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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