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3986a97a5f
vgmstream/src/meta/genh.c
manakoAT 3986a97a5f dsp interleave in genh fixed 
git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@482 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
2008-11-19 20:32:56 +00:00

374 lines
12 KiB
C
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#include "../vgmstream.h"
#include "meta.h"
#include "../layout/layout.h"
#include "../util.h"
#ifdef VGM_USE_MPEG
#include <mpg123.h>
#endif
/* GENH is an artificial "generic" header for headerless streams */
VGMSTREAM * init_vgmstream_genh(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
int32_t channel_count;
int32_t interleave;
int32_t sample_rate;
int32_t loop_start;
int32_t loop_end;
int32_t start_offset;
int32_t header_size;
int32_t coef[2];
char filename[260];
int coding;
#ifdef VGM_USE_MPEG
mpeg_codec_data *data = NULL;
#endif
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("genh",filename_extension(filename))) goto fail;
/* check header magic */
if (read_32bitBE(0x0,streamFile) != 0x47454e48) goto fail;
/* check channel count (needed for ADP/DTK check) */
channel_count = read_32bitLE(0x4,streamFile);
if (channel_count < 1) goto fail;
/* check format */
/* 0 = PSX ADPCM */
/* 1 = XBOX IMA ADPCM */
/* 2 = NGC ADP/DTK ADPCM */
/* 3 = 16bit big endian PCM */
/* 4 = 16bit little endian PCM */
/* 5 = 8bit PCM */
/* 6 = SDX2 */
/* 7 = DVI IMA */
/* 8 = MPEG-1 Layer III, possibly also the MPEG-2 and 2.5 extensions */
/* 9 = IMA */
/* 10 = AICA ADPCM */
/* 11 = MS ADPCM */
/* 12 = NGC DSP */
/* ... others to come */
switch (read_32bitLE(0x18,streamFile)) {
case 0:
coding = coding_PSX;
break;
case 1:
coding = coding_XBOX;
break;
case 2:
coding = coding_NGC_DTK;
if (channel_count != 2) goto fail;
break;
case 3:
coding = coding_PCM16BE;
break;
case 4:
coding = coding_PCM16LE;
break;
case 5:
coding = coding_PCM8;
break;
case 6:
coding = coding_SDX2;
break;
case 7:
coding = coding_DVI_IMA;
break;
#ifdef VGM_USE_MPEG
case 8:
/* we say MPEG-1 L3 here, but later find out exactly which */
coding = coding_MPEG1_L3;
break;
#endif
case 9:
coding = coding_IMA;
break;
case 10:
coding = coding_AICA;
break;
case 11:
coding = coding_MSADPCM;
break;
case 12:
coding = coding_NGC_DSP;
break;
default:
goto fail;
}
start_offset = read_32bitLE(0x1C,streamFile);
header_size = read_32bitLE(0x20,streamFile);
/* HACK to support old genh */
if (header_size == 0) {
start_offset = 0x800;
header_size = 0x800;
}
/* check for audio data start past header end */
if (header_size > start_offset) goto fail;
interleave = read_32bitLE(0x8,streamFile);
sample_rate = read_32bitLE(0xc,streamFile);
loop_start = read_32bitLE(0x10,streamFile);
loop_end = read_32bitLE(0x14,streamFile);
coef[0] = read_32bitLE(0x24,streamFile);
coef[1] = read_32bitLE(0x28,streamFile);
//if (coding == coding_XBOX && channel_count != 2) goto fail;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,(loop_start!=-1));
if (!vgmstream) goto fail;
/* fill in the vital information */
vgmstream->channels = channel_count;
vgmstream->sample_rate = sample_rate;
vgmstream->num_samples = loop_end;
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end;
vgmstream->loop_flag = (loop_start != -1);
switch (coding) {
case coding_PCM16LE:
case coding_PCM16BE:
case coding_PCM8:
case coding_SDX2:
case coding_PSX:
case coding_DVI_IMA:
case coding_IMA:
case coding_AICA:
vgmstream->interleave_block_size = interleave;
if (channel_count > 1)
{
if (coding == coding_SDX2) {
coding = coding_SDX2_int;
vgmstream->coding_type = coding_SDX2_int;
}
if(vgmstream->interleave_block_size==0xffffffff)
vgmstream->layout_type=layout_none;
else {
vgmstream->layout_type = layout_interleave;
if(coding==coding_DVI_IMA)
coding=coding_INT_DVI_IMA;
if(coding==coding_IMA)
coding=coding_INT_IMA;
}
} else {
vgmstream->layout_type = layout_none;
}
break;
case coding_MSADPCM:
if (channel_count != 2) goto fail;
vgmstream->interleave_block_size = interleave;
vgmstream->layout_type = layout_none;
break;
case coding_XBOX:
vgmstream->layout_type = layout_none;
break;
case coding_NGC_DTK:
vgmstream->layout_type = layout_dtk_interleave;
break;
case coding_NGC_DSP:
if (channel_count > 1) {
if (interleave < 9) {
vgmstream->layout_type = layout_interleave_byte;
vgmstream->interleave_block_size = interleave;
} else if (interleave > 8) {
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
} else {
vgmstream->layout_type = layout_none;
}
}
break;
#ifdef VGM_USE_MPEG
case coding_MPEG1_L3:
vgmstream->layout_type = layout_mpeg;
break;
#endif
}
vgmstream->coding_type = coding;
vgmstream->meta_type = meta_GENH;
/* open the file for reading by each channel */
{
int i;
int j;
STREAMFILE * chstreamfile = NULL;
for (i=0;i<channel_count;i++) {
off_t chstart_offset = start_offset;
switch (coding) {
case coding_PSX:
case coding_PCM16BE:
case coding_PCM16LE:
case coding_SDX2:
case coding_SDX2_int:
case coding_DVI_IMA:
case coding_IMA:
case coding_PCM8:
case coding_AICA:
case coding_INT_DVI_IMA:
case coding_INT_IMA:
if (vgmstream->layout_type == layout_interleave) {
if (interleave >= 512) {
chstreamfile =
streamFile->open(streamFile,filename,interleave);
} else {
if (!chstreamfile)
chstreamfile =
streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
}
chstart_offset =
start_offset+vgmstream->interleave_block_size*i;
} else {
chstreamfile =
streamFile->open(streamFile,filename,
STREAMFILE_DEFAULT_BUFFER_SIZE);
}
break;
case coding_XBOX:
case coding_MSADPCM:
/* xbox's "interleave" is a lie, all channels start at same
* offset */
chstreamfile =
streamFile->open(streamFile,filename,
STREAMFILE_DEFAULT_BUFFER_SIZE);
break;
case coding_NGC_DTK:
if (!chstreamfile)
chstreamfile =
streamFile->open(streamFile,filename,32*0x400);
break;
case coding_NGC_DSP:
if (!chstreamfile)
chstreamfile =
streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
for (j=0;j<16;j++)
vgmstream->ch[i].adpcm_coef[j] = read_16bitBE(coef[i]+j*2,streamFile);
chstart_offset =start_offset+vgmstream->interleave_block_size*i;
break;
#ifdef VGM_USE_MPEG
case coding_MPEG1_L3:
if (!chstreamfile)
chstreamfile =
streamFile->open(streamFile,filename,MPEG_BUFFER_SIZE);
break;
#endif
}
if (!chstreamfile) goto fail;
vgmstream->ch[i].streamfile = chstreamfile;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=chstart_offset;
}
}
#ifdef VGM_USE_MPEG
if (coding == coding_MPEG1_L3) {
int rc;
off_t read_offset;
data = calloc(1,sizeof(mpeg_codec_data));
if (!data) goto mpeg_fail;
data->m = mpg123_new(NULL,&rc);
if (rc==MPG123_NOT_INITIALIZED) {
if (mpg123_init()!=MPG123_OK) goto mpeg_fail;
data->m = mpg123_new(NULL,&rc);
if (rc!=MPG123_OK) goto mpeg_fail;
} else if (rc!=MPG123_OK) {
goto mpeg_fail;
}
mpg123_param(data->m,MPG123_REMOVE_FLAGS,MPG123_GAPLESS,0.0);
if (mpg123_open_feed(data->m)!=MPG123_OK) {
goto mpeg_fail;
}
/* check format */
read_offset=0;
do {
size_t bytes_done;
if (read_streamfile(data->buffer, start_offset+read_offset,
MPEG_BUFFER_SIZE,vgmstream->ch[0].streamfile) !=
MPEG_BUFFER_SIZE) goto mpeg_fail;
read_offset+=1;
rc = mpg123_decode(data->m,data->buffer,MPEG_BUFFER_SIZE,
NULL,0,&bytes_done);
if (rc != MPG123_OK && rc != MPG123_NEW_FORMAT &&
rc != MPG123_NEED_MORE) goto mpeg_fail;
} while (rc != MPG123_NEW_FORMAT);
{
long rate;
int channels,encoding;
struct mpg123_frameinfo mi;
rc = mpg123_getformat(data->m,&rate,&channels,&encoding);
if (rc != MPG123_OK) goto mpeg_fail;
if (rate != vgmstream->sample_rate ||
channels != vgmstream->channels ||
encoding != MPG123_ENC_SIGNED_16) goto mpeg_fail;
mpg123_info(data->m,&mi);
if (mi.rate != vgmstream->sample_rate) goto mpeg_fail;
if (mi.version == MPG123_1_0 && mi.layer == 1)
vgmstream->coding_type = coding_MPEG1_L1;
else if (mi.version == MPG123_1_0 && mi.layer == 2)
vgmstream->coding_type = coding_MPEG1_L2;
else if (mi.version == MPG123_1_0 && mi.layer == 3)
vgmstream->coding_type = coding_MPEG1_L3;
else if (mi.version == MPG123_2_0 && mi.layer == 1)
vgmstream->coding_type = coding_MPEG2_L1;
else if (mi.version == MPG123_2_0 && mi.layer == 2)
vgmstream->coding_type = coding_MPEG2_L2;
else if (mi.version == MPG123_2_0 && mi.layer == 3)
vgmstream->coding_type = coding_MPEG2_L3;
else if (mi.version == MPG123_2_5 && mi.layer == 1)
vgmstream->coding_type = coding_MPEG25_L1;
else if (mi.version == MPG123_2_5 && mi.layer == 2)
vgmstream->coding_type = coding_MPEG25_L2;
else if (mi.version == MPG123_2_5 && mi.layer == 3)
vgmstream->coding_type = coding_MPEG25_L3;
else goto mpeg_fail;
}
/* reinit, to ignore the reading we've done so far */
mpg123_open_feed(data->m);
vgmstream->codec_data = data;
}
#endif
return vgmstream;
/* clean up anything we may have opened */
#ifdef VGM_USE_MPEG
mpeg_fail:
if (data) {
mpg123_delete(data->m);
free(data);
}
#endif
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
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