vgmstream/src/meta/ps3_msf.c
2013-09-03 11:17:16 -07:00

157 lines
5.1 KiB
C

#include "meta.h"
#include "../coding/coding.h"
#include "../util.h"
/* MSF header */
VGMSTREAM * init_vgmstream_ps3_msf(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
off_t start_offset;
int32_t loop_start, loop_end;
int loop_flag = 0;
int channel_count;
int codec_id;
size_t fileLength;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("msf",filename_extension(filename))) goto fail;
if (read_8bit(0x0,streamFile) != 0x4D) goto fail; /* M */
if (read_8bit(0x1,streamFile) != 0x53) goto fail; /* S */
if (read_8bit(0x2,streamFile) != 0x46) goto fail; /* F */
fileLength = get_streamfile_size(streamFile);
loop_flag = (read_32bitBE(0x18,streamFile) != 0xFFFFFFFF);
if (loop_flag)
{
loop_start = read_32bitBE(0x18,streamFile);
loop_end = read_32bitBE(0x0C,streamFile);
}
channel_count = read_32bitBE(0x8,streamFile);
codec_id = read_32bitBE(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;
/* Sample rate hack for strange files that don't have a specified frequency */
if (read_32bitBE(0x10,streamFile)==0x00000000)
vgmstream->sample_rate = 48000;
else
vgmstream->sample_rate = read_32bitBE(0x10,streamFile);
start_offset = 0x40;
switch (codec_id) {
case 0x0: /* PCM (Big Endian) */
{
vgmstream->coding_type = coding_PCM16BE;
vgmstream->num_samples = read_32bitBE(0x0C,streamFile)/2/channel_count;
if (loop_flag){
vgmstream->loop_start_sample = loop_start/2/channel_count;
vgmstream->loop_end_sample = loop_end/2/channel_count;
}
if (channel_count == 1)
{
vgmstream->layout_type = layout_none;
}
else if (channel_count > 1)
{
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 2;
}
}
break;
case 0x3: /* PSx ADPCM */
{
vgmstream->coding_type = coding_PSX;
vgmstream->num_samples = read_32bitBE(0x0C,streamFile)*28/16/channel_count;
if (vgmstream->num_samples == 0xFFFFFFFF)
{
vgmstream->num_samples = (fileLength - start_offset)*28/16/channel_count;
}
if (loop_flag)
{
vgmstream->loop_start_sample = loop_start*28/16/channel_count;
vgmstream->loop_end_sample = loop_end*28/16/channel_count;
}
if (channel_count == 1)
{
vgmstream->layout_type = layout_none;
}
else if (channel_count > 1)
{
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x10; // read_32bitBE(0x14,streamFile);
}
}
break;
#ifdef VGM_USE_MPEG
case 0x7: /* MPEG */
{
mpeg_codec_data *mpeg_data = NULL;
struct mpg123_frameinfo mi;
coding_t ct;
mpeg_data = init_mpeg_codec_data(streamFile, start_offset, vgmstream->sample_rate, vgmstream->channels, &ct, NULL, NULL);
if (!mpeg_data) goto fail;
vgmstream->codec_data = mpeg_data;
if (MPG123_OK != mpg123_info(mpeg_data->m, &mi)) goto fail;
vgmstream->coding_type = ct;
vgmstream->layout_type = layout_mpeg;
if (mi.vbr != MPG123_CBR) goto fail;
vgmstream->num_samples = mpeg_bytes_to_samples(read_32bitBE(0xC,streamFile), &mi);
vgmstream->num_samples -= vgmstream->num_samples%576;
if (loop_flag) {
vgmstream->loop_start_sample = mpeg_bytes_to_samples(loop_start, &mi);
vgmstream->loop_start_sample -= vgmstream->loop_start_sample%576;
vgmstream->loop_end_sample = mpeg_bytes_to_samples(loop_end, &mi);
vgmstream->loop_end_sample -= vgmstream->loop_end_sample%576;
}
vgmstream->interleave_block_size = 0;
}
break;
#endif
default:
goto fail;
}
vgmstream->meta_type = meta_PS3_MSF;
/* open the file for reading */
{
int i;
STREAMFILE * file;
file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!file) goto fail;
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].streamfile = file;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=start_offset+vgmstream->interleave_block_size*i;
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}