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f47fabab9a
vgmstream/src/meta/riff.c
bnnm c7c1564d9f Minor cleanups (no functionality changes) 
- added comments, code alignment for clarity
- renamed some decoders for consistency (ex. eaxa > ea_xa, invert_psx >
psx_bmdx, vgm_adpcm_cfg > psx_cfg)
- removed layout_dkt_interleave (same as nolayout)
- removed skip_last_channel (not used anymore)
- removed meta_DSP_HALP (not used anymore)
2017-01-08 01:09:20 +01:00

1004 lines
32 KiB
C
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#include "meta.h"
#include "../coding/coding.h"
#include "../layout/layout.h"
#include "../util.h"
/* Resource Interchange File Format */
/* return milliseconds */
long parse_marker(unsigned char * marker) {
long hh,mm,ss,ms;
if (memcmp("Marker ",marker,7)) return -1;
if (4 != sscanf((char*)marker+7,"%ld:%ld:%ld.%ld",&hh,&mm,&ss,&ms))
return -1;
return ((hh*60+mm)*60+ss)*1000+ms;
}
/* loop points have been found hiding here */
void parse_adtl(off_t adtl_offset, off_t adtl_length, STREAMFILE *streamFile,
long *loop_start, long *loop_end, int *loop_flag) {
int loop_start_found = 0;
int loop_end_found = 0;
off_t current_chunk = adtl_offset+4;
while (current_chunk < adtl_offset+adtl_length) {
uint32_t chunk_type = read_32bitBE(current_chunk,streamFile);
off_t chunk_size = read_32bitLE(current_chunk+4,streamFile);
if (current_chunk+8+chunk_size > adtl_offset+adtl_length) return;
switch(chunk_type) {
case 0x6c61626c: /* labl */
{
unsigned char *labelcontent;
labelcontent = malloc(chunk_size-4);
if (!labelcontent) return;
if (read_streamfile(labelcontent,current_chunk+0xc,
chunk_size-4,streamFile)!=chunk_size-4) {
free(labelcontent);
return;
}
switch (read_32bitLE(current_chunk+8,streamFile)) {
case 1:
if (!loop_start_found &&
(*loop_start = parse_marker(labelcontent))>=0)
{
loop_start_found = 1;
}
break;
case 2:
if (!loop_end_found &&
(*loop_end = parse_marker(labelcontent))>=0)
{
loop_end_found = 1;
}
break;
default:
break;
}
free(labelcontent);
}
break;
default:
break;
}
current_chunk += 8 + chunk_size;
}
if (loop_start_found && loop_end_found) *loop_flag = 1;
/* labels don't seem to be consistently ordered */
if (*loop_start > *loop_end) {
long temp = *loop_start;
*loop_start = *loop_end;
*loop_end = temp;
}
}
struct riff_fmt_chunk {
off_t offset;
off_t size;
int sample_rate;
int channel_count;
uint32_t block_size;
int coding_type;
int interleave;
};
int read_fmt(int big_endian,
STREAMFILE * streamFile,
off_t current_chunk,
struct riff_fmt_chunk * fmt,
int sns,
int mwv) {
int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
if (big_endian) {
read_32bit = read_32bitBE;
read_16bit = read_16bitBE;
} else {
read_32bit = read_32bitLE;
read_16bit = read_16bitLE;
}
fmt->offset = current_chunk;
fmt->size = read_32bit(current_chunk+0x4,streamFile);
fmt->sample_rate = read_32bit(current_chunk+0x0c,streamFile);
fmt->channel_count = read_16bit(current_chunk+0x0a,streamFile);
fmt->block_size = read_16bit(current_chunk+0x14,streamFile);
switch ((uint16_t)read_16bit(current_chunk+0x8,streamFile)) {
case 1: /* PCM */
switch (read_16bit(current_chunk+0x16,streamFile)) {
case 16:
if (big_endian) {
fmt->coding_type = coding_PCM16BE;
} else {
fmt->coding_type = coding_PCM16LE;
}
fmt->interleave = 2;
break;
case 8:
fmt->coding_type = coding_PCM8_U_int;
fmt->interleave = 1;
break;
default:
goto fail;
}
break;
case 2: /* MS ADPCM */
/* ensure 4bps */
if (read_16bit(current_chunk+0x16,streamFile)!=4)
goto fail;
fmt->coding_type = coding_MSADPCM;
fmt->interleave = 0;
break;
case 0x11: /* MS IMA ADCM */
/* ensure 4bps */
if (read_16bit(current_chunk+0x16,streamFile)!=4)
goto fail;
fmt->coding_type = coding_MS_IMA;
fmt->interleave = 0;
break;
case 0x69: /* MS IMA ADCM - Rayman Raving Rabbids 2 (PC) */
/* ensure 4bps */
if (read_16bit(current_chunk+0x16,streamFile)!=4)
goto fail;
fmt->coding_type = coding_MS_IMA;
fmt->interleave = 0;
break;
case 0x555: /* Level-5 0x555 ADPCM */
if (!mwv) goto fail;
fmt->coding_type = coding_L5_555;
fmt->interleave = 0x12;
break;
case 0x5050: /* Ubisoft .sns uses this for DSP */
if (!sns) goto fail;
fmt->coding_type = coding_NGC_DSP;
fmt->interleave = 8;
break;
case 0xFFF0: /* */
fmt->coding_type = coding_NGC_DSP;
fmt->interleave = 8;
break;
#ifdef VGM_USE_FFMPEG
case 0x270: /* ATRAC3 */
#if defined(VGM_USE_FFMPEG) && !defined(VGM_USE_MAIATRAC3PLUS)
case 0xFFFE: /* WAVEFORMATEXTENSIBLE / ATRAC3plus */
#endif /* defined */
fmt->coding_type = coding_FFmpeg;
fmt->block_size = 2048;
fmt->interleave = 0;
break;
#endif /* VGM_USE_FFMPEG */
#ifdef VGM_USE_MAIATRAC3PLUS
case 0xFFFE: /* WAVEFORMATEXTENSIBLE / ATRAC3plus */
if (read_32bit(current_chunk+0x20,streamFile) == 0xE923AABF &&
read_16bit(current_chunk+0x24,streamFile) == (int16_t)0xCB58 &&
read_16bit(current_chunk+0x26,streamFile) == 0x4471 &&
read_32bitLE(current_chunk+0x28,streamFile) == 0xFAFF19A1 &&
read_32bitLE(current_chunk+0x2C,streamFile) == 0x62CEE401) {
uint16_t bztmp = read_16bit(current_chunk+0x32,streamFile);
bztmp = (bztmp >> 8) | (bztmp << 8);
fmt->coding_type = coding_AT3plus;
fmt->block_size = (bztmp & 0x3FF) * 8 + 8;
fmt->interleave = 0;
}
break;
#endif
default:
goto fail;
}
return 0;
fail:
return -1;
}
VGMSTREAM * init_vgmstream_riff(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
struct riff_fmt_chunk fmt;
#ifdef VGM_USE_FFMPEG
ffmpeg_codec_data *ffmpeg_data = NULL;
#endif
off_t file_size = -1;
int sample_count = 0;
int fact_sample_count = -1;
int fact_sample_skip = -1;
off_t start_offset = -1;
int loop_flag = 0;
long loop_start_ms = -1;
long loop_end_ms = -1;
off_t loop_start_offset = -1;
off_t loop_end_offset = -1;
uint32_t riff_size;
uint32_t data_size = 0;
int FormatChunkFound = 0;
int DataChunkFound = 0;
/* Level-5 mwv */
int mwv = 0;
off_t mwv_pflt_offset = -1;
off_t mwv_ctrl_offset = -1;
/* Ubisoft sns */
int sns = 0;
/* Sony atrac3 / 3plus */
int at3 = 0;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("wav",filename_extension(filename)) &&
strcasecmp("lwav",filename_extension(filename))
#ifndef VGM_USE_FFMPEG
&& strcasecmp("sgb",filename_extension(filename)) /* SGB has proper support with FFmpeg in ps3_sgdx */
#endif
)
{
if (!strcasecmp("mwv",filename_extension(filename)))
mwv = 1;
else if (!strcasecmp("sns",filename_extension(filename)))
sns = 1;
#if defined(VGM_USE_MAIATRAC3PLUS) || defined(VGM_USE_FFMPEG)
else if (!strcasecmp("at3",filename_extension(filename)))
at3 = 1;
#endif
else
goto fail;
}
/* check header */
if ((uint32_t)read_32bitBE(0,streamFile)!=0x52494646) /* "RIFF" */
goto fail;
/* check for WAVE form */
if ((uint32_t)read_32bitBE(8,streamFile)!=0x57415645) /* "WAVE" */
goto fail;
riff_size = read_32bitLE(4,streamFile);
file_size = get_streamfile_size(streamFile);
/* check for tructated RIFF */
if (file_size < riff_size+8) goto fail;
/* read through chunks to verify format and find metadata */
{
off_t current_chunk = 0xc; /* start with first chunk */
while (current_chunk < file_size && current_chunk < riff_size+8) {
uint32_t chunk_type = read_32bitBE(current_chunk,streamFile);
off_t chunk_size = read_32bitLE(current_chunk+4,streamFile);
if (current_chunk+8+chunk_size > file_size) goto fail;
switch(chunk_type) {
case 0x666d7420: /* "fmt " */
/* only one per file */
if (FormatChunkFound) goto fail;
FormatChunkFound = 1;
if (-1 == read_fmt(0, /* big endian == false*/
streamFile,
current_chunk,
&fmt,
sns,
mwv))
goto fail;
break;
case 0x64617461: /* data */
/* at most one per file */
if (DataChunkFound) goto fail;
DataChunkFound = 1;
start_offset = current_chunk + 8;
data_size = chunk_size;
break;
case 0x4C495354: /* LIST */
/* what lurks within?? */
switch (read_32bitBE(current_chunk + 8, streamFile)) {
case 0x6164746C: /* adtl */
/* yay, atdl is its own little world */
parse_adtl(current_chunk + 8, chunk_size,
streamFile,
&loop_start_ms,&loop_end_ms,&loop_flag);
break;
default:
break;
}
break;
case 0x736D706C: /* smpl */
/* check loop count */
if (read_32bitLE(current_chunk+0x24, streamFile)==1)
{
/* check loop info */
if (read_32bitLE(current_chunk+0x2c+4, streamFile)==0)
{
loop_flag = 1;
loop_start_offset =
read_32bitLE(current_chunk+0x2c+8, streamFile);
loop_end_offset =
read_32bitLE(current_chunk+0x2c+0xc,streamFile);
}
}
break;
case 0x70666c74: /* pflt */
if (!mwv) break; /* ignore if not in an mwv */
/* predictor filters */
mwv_pflt_offset = current_chunk;
break;
case 0x6374726c: /* ctrl */
if (!mwv) break; /* ignore if not in an mwv */
/* loops! */
if (read_32bitLE(current_chunk+8, streamFile))
{
loop_flag = 1;
}
mwv_ctrl_offset = current_chunk;
break;
case 0x66616374: /* fact */
if (sns && chunk_size == 0x10) {
fact_sample_count = read_32bitLE(current_chunk+0x8, streamFile);
} else if (at3 && chunk_size == 0x8) {
fact_sample_count = read_32bitLE(current_chunk+0x8, streamFile);
fact_sample_skip = read_32bitLE(current_chunk+0xc, streamFile);
} else if (at3 && chunk_size == 0xc) {
fact_sample_count = read_32bitLE(current_chunk+0x8, streamFile);
fact_sample_skip = read_32bitLE(current_chunk+0x10, streamFile);
}
break;
default:
/* ignorance is bliss */
break;
}
current_chunk += 8+chunk_size;
}
}
if (!FormatChunkFound || !DataChunkFound) goto fail;
switch (fmt.coding_type) {
case coding_PCM16LE:
sample_count = data_size/2/fmt.channel_count;
break;
case coding_PCM8_U_int:
sample_count = data_size/fmt.channel_count;
break;
case coding_L5_555:
sample_count = data_size/0x12/fmt.channel_count*32;
break;
case coding_MSADPCM:
sample_count = msadpcm_bytes_to_samples(data_size, fmt.block_size, fmt.channel_count);
break;
case coding_MS_IMA:
sample_count = (data_size / fmt.block_size) * (fmt.block_size - 4 * fmt.channel_count) * 2 / fmt.channel_count +
((data_size % fmt.block_size) ? (data_size % fmt.block_size - 4 * fmt.channel_count) * 2 / fmt.channel_count : 0);
break;
case coding_NGC_DSP:
break;
#ifdef VGM_USE_FFMPEG
case coding_FFmpeg:
{
ffmpeg_data = init_ffmpeg_offset(streamFile, 0, streamFile->get_size(streamFile) );
if ( !ffmpeg_data ) goto fail;
sample_count = ffmpeg_data->totalSamples; /* fact_sample_count */
/* the encoder introduces some garbage (usually silent) samples to skip before the stream
* loop values include the skip samples but fact_sample_count doesn't; add them back to fix some edge loops */
if (fact_sample_skip > 0)
sample_count += fact_sample_skip;
}
break;
#endif
#ifdef VGM_USE_MAIATRAC3PLUS
case coding_AT3plus:
/* rough total samples (block_size may be incorrect if not using joint stereo) */
sample_count = (data_size / fmt.block_size) * 2048;
/* favor fact_samples if available (skip isn't correctly handled for now) */
if (fact_sample_count > 0 && fact_sample_count + fact_sample_skip < sample_count)
sample_count = fact_sample_count + fact_sample_skip;
break;
#endif
default:
goto fail;
}
/* .sns uses fact chunk */
if (sns)
{
if (-1 == fact_sample_count) goto fail;
sample_count = fact_sample_count;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(fmt.channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->num_samples = sample_count;
vgmstream->sample_rate = fmt.sample_rate;
vgmstream->coding_type = fmt.coding_type;
vgmstream->layout_type = layout_none;
if (fmt.channel_count > 1) {
switch (fmt.coding_type) {
case coding_PCM8_U_int:
case coding_MS_IMA:
case coding_MSADPCM:
#ifdef VGM_USE_FFMPEG
case coding_FFmpeg:
#endif
#ifdef VGM_USE_MAIATRAC3PLUS
case coding_AT3plus:
#endif
// use layout_none from above
break;
default:
vgmstream->layout_type = layout_interleave;
break;
}
}
vgmstream->interleave_block_size = fmt.interleave;
switch (fmt.coding_type) {
case coding_MSADPCM:
case coding_MS_IMA:
#ifdef VGM_USE_FFMPEG
case coding_FFmpeg:
#endif
#ifdef VGM_USE_MAIATRAC3PLUS
case coding_AT3plus:
#endif
// override interleave_block_size with frame size
vgmstream->interleave_block_size = fmt.block_size;
break;
default:
// use interleave from above
break;
}
#ifdef VGM_USE_FFMPEG
if (fmt.coding_type == coding_FFmpeg) {
vgmstream->codec_data = ffmpeg_data;
}
#endif
#ifdef VGM_USE_MAIATRAC3PLUS
if (fmt.coding_type == coding_AT3plus) {
maiatrac3plus_codec_data *data = malloc(sizeof(maiatrac3plus_codec_data));
data->buffer = 0;
data->samples_discard = 0;
data->handle = Atrac3plusDecoder_openContext();
vgmstream->codec_data = data;
}
#endif
if (loop_flag) {
if (loop_start_ms >= 0)
{
vgmstream->loop_start_sample =
(long long)loop_start_ms*fmt.sample_rate/1000;
vgmstream->loop_end_sample =
(long long)loop_end_ms*fmt.sample_rate/1000;
vgmstream->meta_type = meta_RIFF_WAVE_labl;
}
else if (loop_start_offset >= 0)
{
vgmstream->loop_start_sample = loop_start_offset;
vgmstream->loop_end_sample = loop_end_offset;
vgmstream->meta_type = meta_RIFF_WAVE_smpl;
}
else if (mwv && mwv_ctrl_offset != -1)
{
vgmstream->loop_start_sample = read_32bitLE(mwv_ctrl_offset+12,
streamFile);
vgmstream->loop_end_sample = sample_count;
}
}
else
{
vgmstream->meta_type = meta_RIFF_WAVE;
}
if (mwv)
{
int i, c;
if (fmt.coding_type == coding_L5_555)
{
const int filter_order = 3;
int filter_count = read_32bitLE(mwv_pflt_offset+12, streamFile);
if (mwv_pflt_offset == -1 ||
read_32bitLE(mwv_pflt_offset+8, streamFile) != filter_order ||
read_32bitLE(mwv_pflt_offset+4, streamFile) < 8 + filter_count * 4 * filter_order)
goto fail;
if (filter_count > 0x20) goto fail;
for (c = 0; c < fmt.channel_count; c++)
{
for (i = 0; i < filter_count * filter_order; i++)
{
vgmstream->ch[c].adpcm_coef_3by32[i] = read_32bitLE(
mwv_pflt_offset+16+i*4, streamFile
);
}
}
}
vgmstream->meta_type = meta_RIFF_WAVE_MWV;
}
if (sns)
{
int c;
/* common codebook? */
static const int16_t coef[16] =
{0x04ab,0xfced,0x0789,0xfedf,0x09a2,0xfae5,0x0c90,0xfac1,
0x084d,0xfaa4,0x0982,0xfdf7,0x0af6,0xfafa,0x0be6,0xfbf5};
for (c = 0; c < fmt.channel_count; c++)
{
int i;
for (i = 0; i < 16; i++)
{
vgmstream->ch[c].adpcm_coef[i] = coef[i];
}
}
vgmstream->meta_type = meta_RIFF_WAVE_SNS;
}
/* open the file, set up each channel */
{
int i;
vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,
STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!vgmstream->ch[0].streamfile) goto fail;
for (i=0;i<fmt.channel_count;i++) {
vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
vgmstream->ch[i].offset = vgmstream->ch[i].channel_start_offset =
start_offset+i*fmt.interleave;
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
#ifdef VGM_USE_FFMPEG
if (ffmpeg_data) {
free_ffmpeg(ffmpeg_data);
if (vgmstream) vgmstream->codec_data = NULL;
}
#endif
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
VGMSTREAM * init_vgmstream_rifx(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
struct riff_fmt_chunk fmt;
off_t file_size = -1;
int sample_count = 0;
//int fact_sample_count = -1;
off_t start_offset = -1;
off_t wiih_offset = -1;
uint32_t wiih_size = 0;
int loop_flag = 0;
off_t loop_start_offset = -1;
off_t loop_end_offset = -1;
uint32_t riff_size;
uint32_t data_size = 0;
int FormatChunkFound = 0;
int DataChunkFound = 0;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("wav",filename_extension(filename)) &&
strcasecmp("lwav",filename_extension(filename)))
{
goto fail;
}
/* check header */
if ((uint32_t)read_32bitBE(0,streamFile)!=0x52494658) /* "RIFX" */
goto fail;
/* check for WAVE form */
if ((uint32_t)read_32bitBE(8,streamFile)!=0x57415645) /* "WAVE" */
goto fail;
riff_size = read_32bitBE(4,streamFile);
file_size = get_streamfile_size(streamFile);
/* check for tructated RIFF */
if (file_size < riff_size+8) goto fail;
/* read through chunks to verify format and find metadata */
{
off_t current_chunk = 0xc; /* start with first chunk */
while (current_chunk < file_size && current_chunk < riff_size+8) {
uint32_t chunk_type = read_32bitBE(current_chunk,streamFile);
off_t chunk_size = read_32bitBE(current_chunk+4,streamFile);
if (current_chunk+8+chunk_size > file_size) goto fail;
switch(chunk_type) {
case 0x666d7420: /* "fmt " */
/* only one per file */
if (FormatChunkFound) goto fail;
FormatChunkFound = 1;
if (-1 == read_fmt(1, /* big endian == true */
streamFile,
current_chunk,
&fmt,
0, /* sns == false */
0)) /* mwv == false */
goto fail;
break;
case 0x64617461: /* data */
/* at most one per file */
if (DataChunkFound) goto fail;
DataChunkFound = 1;
start_offset = current_chunk + 8;
data_size = chunk_size;
break;
case 0x736D706C: /* smpl */
/* check loop count */
if (read_32bitBE(current_chunk+0x24, streamFile)==1)
{
/* check loop info */
if (read_32bitBE(current_chunk+0x2c+4, streamFile)==0)
{
loop_flag = 1;
loop_start_offset =
read_32bitBE(current_chunk+0x2c+8, streamFile);
loop_end_offset =
read_32bitBE(current_chunk+0x2c+0xc,streamFile);
}
}
break;
case 0x66616374: /* fact */
if (chunk_size != 4) break;
//fact_sample_count = read_32bitBE(current_chunk+8, streamFile);
break;
case 0x57696948: /* WiiH */
wiih_size = read_32bitBE(current_chunk+4, streamFile);
wiih_offset = current_chunk+8;
break;
default:
/* ignorance is bliss */
break;
}
current_chunk += 8+chunk_size;
}
}
if (!FormatChunkFound || !DataChunkFound) goto fail;
if (wiih_offset < 0 && fmt.coding_type == coding_MSADPCM &&
fmt.size == 0x1c + fmt.channel_count * 0x2e + 2) {
/* Epic Mickey 2 */
wiih_offset = fmt.offset + 8 + 0x1c;
wiih_size = fmt.channel_count * 0x2e;
fmt.coding_type = coding_NGC_DSP;
fmt.interleave = 8;
}
switch (fmt.coding_type) {
case coding_PCM16BE:
sample_count = data_size/2/fmt.channel_count;
break;
case coding_PCM8_U_int:
sample_count = data_size/fmt.channel_count;
break;
case coding_NGC_DSP:
/* the only way of getting DSP info right now */
if (wiih_offset < 0 || wiih_size != 0x2e*fmt.channel_count)
goto fail;
break;
#if 0
/* found in RE:ORC, looks like it should be MS_IMA instead */
case coding_MSADPCM:
sample_count = msadpcm_bytes_to_samples(data_size, fmt.block_size, fmt.channel_count);
break;
#endif
default:
goto fail;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(fmt.channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->num_samples = sample_count;
vgmstream->sample_rate = fmt.sample_rate;
vgmstream->coding_type = fmt.coding_type;
vgmstream->layout_type = layout_none;
if (fmt.channel_count > 1) {
switch (fmt.coding_type) {
case coding_PCM8_U_int:
case coding_MS_IMA:
case coding_MSADPCM:
// use layout_none from above
break;
default:
vgmstream->layout_type = layout_interleave;
break;
}
}
vgmstream->interleave_block_size = fmt.interleave;
switch (fmt.coding_type) {
case coding_MSADPCM:
case coding_MS_IMA:
// override interleave_block_size with frame size
vgmstream->interleave_block_size = fmt.block_size;
break;
default:
// use interleave from above
break;
}
if (fmt.coding_type == coding_MS_IMA)
vgmstream->interleave_block_size = fmt.block_size;
if (loop_flag) {
if (loop_start_offset >= 0)
{
vgmstream->loop_start_sample = loop_start_offset;
vgmstream->loop_end_sample = loop_end_offset;
vgmstream->meta_type = meta_RIFX_WAVE_smpl;
}
}
else
{
vgmstream->meta_type = meta_RIFX_WAVE;
}
/* read from WiiH */
if (wiih_offset >= 0) {
int i,j;
for (i=0;i<fmt.channel_count;i++) {
for (j=0;j<16;j++)
vgmstream->ch[i].adpcm_coef[j] = read_16bitBE(wiih_offset + i * 0x2e + j * 2,streamFile);
vgmstream->ch[i].adpcm_history1_16 = read_16bitBE(wiih_offset + i * 0x2e + 0x24,streamFile);
vgmstream->ch[i].adpcm_history2_16 = read_16bitBE(wiih_offset + i * 0x2e + 0x26,streamFile);
}
}
/* open the file, set up each channel */
{
int i;
vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,
STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!vgmstream->ch[0].streamfile) goto fail;
for (i=0;i<fmt.channel_count;i++) {
vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
vgmstream->ch[i].offset = vgmstream->ch[i].channel_start_offset =
start_offset+i*fmt.interleave;
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
/* XNBm (Windows 7 Phone) */
VGMSTREAM * init_vgmstream_xnbm(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
struct riff_fmt_chunk fmt;
off_t file_size = -1;
int sample_count = 0;
off_t start_offset = -1;
int loop_flag = 0;
#if 0
long loop_start_ms = -1;
long loop_end_ms = -1;
off_t loop_start_offset = -1;
off_t loop_end_offset = -1;
#endif
uint32_t xnbm_size;
uint32_t data_size = 0;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("xnb",filename_extension(filename)))
{
goto fail;
}
/* check header */
if ((uint32_t)read_32bitBE(0,streamFile)!=0x584E426d) /* "XNBm" */
goto fail;
/* check version? */
if ((uint32_t)read_16bitLE(4,streamFile)!=5)
goto fail;
xnbm_size = read_32bitLE(6,streamFile);
file_size = get_streamfile_size(streamFile);
/* check for tructated XNBm */
if (file_size < xnbm_size) goto fail;
/* read through chunks to verify format and find metadata */
{
off_t current_chunk = 0xa; /* start with first chunk */
int id_string_len;
uint32_t fmt_chunk_size;
/* flag? count of strings? */
if (read_8bit(current_chunk ++, streamFile) != 1)
goto fail;
/* string length */
id_string_len = read_8bit(current_chunk ++, streamFile);
/* skip string */
/* may want to check this ID "Microsoft.Xna.Framework.Content.SoundEffectReader" */
current_chunk += id_string_len;
/* ???? */
if (read_32bitLE(current_chunk, streamFile) != 0)
goto fail;
current_chunk += 4;
/* ???? */
if (read_8bit(current_chunk ++, streamFile) != 0)
goto fail;
/* flag? count of chunks? */
if (read_8bit(current_chunk++, streamFile) != 1)
goto fail;
/* fmt size */
fmt_chunk_size = read_32bitLE(current_chunk, streamFile);
current_chunk += 4;
if (-1 == read_fmt(0, /* big endian == false */
streamFile,
current_chunk-8, /* read_fmt() expects to skip "fmt "+size */
&fmt,
0, /* sns == false */
0)) /* mwv == false */
goto fail;
current_chunk += fmt_chunk_size;
/* data size! */
data_size = read_32bitLE(current_chunk, streamFile);
current_chunk += 4;
start_offset = current_chunk;
}
switch (fmt.coding_type) {
case coding_PCM16LE:
sample_count = data_size/2/fmt.channel_count;
break;
case coding_PCM8_U_int:
sample_count = data_size/fmt.channel_count;
break;
case coding_MSADPCM:
sample_count = msadpcm_bytes_to_samples(data_size, fmt.block_size, fmt.channel_count);
break;
case coding_MS_IMA:
sample_count = (data_size / fmt.block_size) * (fmt.block_size - 4 * fmt.channel_count) * 2 / fmt.channel_count +
((data_size % fmt.block_size) ? (data_size % fmt.block_size - 4 * fmt.channel_count) * 2 / fmt.channel_count : 0);
break;
default:
goto fail;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(fmt.channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->num_samples = sample_count;
vgmstream->sample_rate = fmt.sample_rate;
vgmstream->coding_type = fmt.coding_type;
vgmstream->layout_type = layout_none;
if (fmt.channel_count > 1) {
switch (fmt.coding_type) {
case coding_PCM8_U_int:
case coding_MS_IMA:
case coding_MSADPCM:
// use layout_none from above
break;
default:
vgmstream->layout_type = layout_interleave;
break;
}
}
vgmstream->interleave_block_size = fmt.interleave;
switch (fmt.coding_type) {
case coding_MSADPCM:
case coding_MS_IMA:
// override interleave_block_size with frame size
vgmstream->interleave_block_size = fmt.block_size;
break;
default:
// use interleave from above
break;
}
vgmstream->meta_type = meta_XNBm;
/* open the file, set up each channel */
{
int i;
vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,
STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!vgmstream->ch[0].streamfile) goto fail;
for (i=0;i<fmt.channel_count;i++) {
vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
vgmstream->ch[i].offset = vgmstream->ch[i].channel_start_offset =
start_offset+i*fmt.interleave;
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
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