mirror of
https://github.com/vgmstream/vgmstream.git
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3d52adfa3a
git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@836 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
147 lines
5.3 KiB
C
147 lines
5.3 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../util.h"
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/* Square-Enix SCD (FF XIII, XIV) */
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VGMSTREAM * init_vgmstream_se_scd(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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off_t start_offset, meta_offset_offset, meta_offset, size_offset;
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int32_t loop_start, loop_end;
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int loop_flag = 0;
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int channel_count;
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int codec_id;
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int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
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int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("scd",filename_extension(filename))) goto fail;
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/* SEDB */
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if (read_32bitBE(0,streamFile) != 0x53454442) goto fail;
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/* SSCF */
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if (read_32bitBE(4,streamFile) != 0x53534346) goto fail;
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if (read_32bitBE(8,streamFile) == 2) {
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/* version 2 BE, as seen in FFXIII for PS3 */
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read_32bit = read_32bitBE;
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read_16bit = read_16bitBE;
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size_offset = 0x14;
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meta_offset_offset = 0x70;
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} else if (read_32bitLE(8,streamFile) == 3 ||
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read_32bitLE(8,streamFile) == 2) {
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/* version 2/3 LE, as seen in FFXIV for ?? */
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read_32bit = read_32bitLE;
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read_16bit = read_16bitLE;
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size_offset = 0x10;
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meta_offset_offset = 0x70;
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} else goto fail;
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/* check file size with header value */
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if (read_32bit(size_offset,streamFile) != get_streamfile_size(streamFile))
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goto fail;
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/* this is probably some kind of chunk offset (?) */
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meta_offset = read_32bit(0x70,streamFile);
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/* check that chunk size equals stream size (?) */
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loop_start = read_32bit(meta_offset+0x10,streamFile);
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loop_end = read_32bit(meta_offset+0x14,streamFile);
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loop_flag = (loop_end > 0);
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channel_count = read_32bit(meta_offset+4,streamFile);
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codec_id = read_32bit(meta_offset+0xc,streamFile);
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count,loop_flag);
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if (!vgmstream) goto fail;
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/* fill in the vital statistics */
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bit(meta_offset+8,streamFile);
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start_offset = meta_offset + 0x20 + read_32bit(meta_offset+0x18,streamFile);
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switch (codec_id) {
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case 0x1:
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/* PCM */
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vgmstream->coding_type = coding_PCM16LE_int;
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vgmstream->layout_type = layout_none;
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vgmstream->num_samples = read_32bit(meta_offset+0,streamFile) / 2 / channel_count;
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if (loop_flag) {
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vgmstream->loop_start_sample = loop_start / 2 / channel_count;
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vgmstream->loop_end_sample = loop_end / 2 / channel_count;
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}
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break;
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#ifdef VGM_USE_MPEG
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case 0x7:
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/* MPEG */
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{
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mpeg_codec_data *mpeg_data = NULL;
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struct mpg123_frameinfo mi;
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coding_t ct;
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mpeg_data = init_mpeg_codec_data(streamFile, start_offset, vgmstream->sample_rate, vgmstream->channels, &ct);
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if (!mpeg_data) goto fail;
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vgmstream->codec_data = mpeg_data;
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if (MPG123_OK != mpg123_info(mpeg_data->m, &mi)) goto fail;
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vgmstream->coding_type = ct;
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vgmstream->layout_type = layout_mpeg;
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if (mi.vbr != MPG123_CBR) goto fail;
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vgmstream->num_samples = mpeg_bytes_to_samples(read_32bit(meta_offset+0,streamFile), &mi);
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vgmstream->num_samples = vgmstream->num_samples/2*2;
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if (loop_flag) {
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vgmstream->loop_start_sample = mpeg_bytes_to_samples(loop_start, &mi);
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vgmstream->loop_start_sample = vgmstream->loop_start_sample/2*2;
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vgmstream->loop_end_sample = mpeg_bytes_to_samples(loop_end, &mi);
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vgmstream->loop_end_sample = vgmstream->loop_end_sample/2*2;
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}
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vgmstream->interleave_block_size = 0;
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}
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break;
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#endif
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case 0xC:
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/* MS ADPCM */
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vgmstream->coding_type = coding_MSADPCM;
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vgmstream->layout_type = layout_none;
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vgmstream->interleave_block_size = read_16bit(meta_offset+0x2c,streamFile);
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vgmstream->num_samples = msadpcm_bytes_to_samples(read_32bit(meta_offset+0,streamFile), vgmstream->interleave_block_size, vgmstream->channels);
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if (loop_flag) {
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vgmstream->loop_start_sample = msadpcm_bytes_to_samples(loop_start, vgmstream->interleave_block_size, vgmstream->channels);
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vgmstream->loop_end_sample = msadpcm_bytes_to_samples(loop_end, vgmstream->interleave_block_size, vgmstream->channels);
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}
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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->meta_type = meta_SE_SCD;
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/* open the file for reading */
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{
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int i;
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STREAMFILE * file;
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file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!file) goto fail;
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = file;
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vgmstream->ch[i].channel_start_offset=
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vgmstream->ch[i].offset=start_offset;
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}
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}
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return vgmstream;
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/* clean up anything we may have opened */
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fail:
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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