mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 07:32:52 +01:00
157 lines
5.1 KiB
C
157 lines
5.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../util.h"
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/* MSF header */
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VGMSTREAM * init_vgmstream_ps3_msf(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[PATH_LIMIT];
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off_t start_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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size_t fileLength;
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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("msf",filename_extension(filename))) goto fail;
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if (read_8bit(0x0,streamFile) != 0x4D) goto fail; /* M */
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if (read_8bit(0x1,streamFile) != 0x53) goto fail; /* S */
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if (read_8bit(0x2,streamFile) != 0x46) goto fail; /* F */
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fileLength = get_streamfile_size(streamFile);
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loop_flag = (read_32bitBE(0x18,streamFile) != 0xFFFFFFFF);
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if (loop_flag)
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{
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loop_start = read_32bitBE(0x18,streamFile);
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loop_end = read_32bitBE(0x0C,streamFile);
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}
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channel_count = read_32bitBE(0x8,streamFile);
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codec_id = read_32bitBE(0x4,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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/* Sample rate hack for strange files that don't have a specified frequency */
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if (read_32bitBE(0x10,streamFile)==0x00000000)
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vgmstream->sample_rate = 48000;
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else
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vgmstream->sample_rate = read_32bitBE(0x10,streamFile);
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start_offset = 0x40;
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switch (codec_id) {
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case 0x0: /* PCM (Big Endian) */
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{
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vgmstream->coding_type = coding_PCM16BE;
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vgmstream->num_samples = read_32bitBE(0x0C,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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if (channel_count == 1)
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{
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vgmstream->layout_type = layout_none;
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}
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else if (channel_count > 1)
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{
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 2;
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}
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}
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break;
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case 0x3: /* PSx ADPCM */
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{
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vgmstream->coding_type = coding_PSX;
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vgmstream->num_samples = read_32bitBE(0x0C,streamFile)*28/16/channel_count;
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if (vgmstream->num_samples == 0xFFFFFFFF)
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{
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vgmstream->num_samples = (fileLength - start_offset)*28/16/channel_count;
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}
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if (loop_flag)
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{
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vgmstream->loop_start_sample = loop_start*28/16/channel_count;
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vgmstream->loop_end_sample = loop_end*28/16/channel_count;
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}
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if (channel_count == 1)
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{
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vgmstream->layout_type = layout_none;
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}
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else if (channel_count > 1)
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{
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x10; // read_32bitBE(0x14,streamFile);
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}
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}
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break;
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#ifdef VGM_USE_MPEG
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case 0x7: /* 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, NULL, NULL);
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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_32bitBE(0xC,streamFile), &mi);
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vgmstream->num_samples -= vgmstream->num_samples%576;
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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%576;
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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%576;
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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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default:
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goto fail;
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}
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vgmstream->meta_type = meta_PS3_MSF;
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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+vgmstream->interleave_block_size*i;
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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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