mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-30 07:41:22 +00:00
355 lines
8.1 KiB
C++
355 lines
8.1 KiB
C++
#include <algorithm>
|
|
#include "streamsource.h"
|
|
#include "../../libraries/music_common/fileio.h"
|
|
|
|
/**
|
|
* PlayStation XA (ADPCM) source support for MultiVoc
|
|
* Adapted and remixed from superxa2wav
|
|
*
|
|
* taken from EDuke32 and adapted for GZDoom by Christoph Oelckers
|
|
*/
|
|
|
|
|
|
//#define NO_XA_HEADER
|
|
|
|
enum
|
|
{
|
|
kNumOfSamples = 224,
|
|
kNumOfSGs = 18,
|
|
TTYWidth = 80,
|
|
|
|
kBufSize = (kNumOfSGs*kNumOfSamples),
|
|
kSamplesMono = (kNumOfSGs*kNumOfSamples),
|
|
kSamplesStereo = (kNumOfSGs*kNumOfSamples/2),
|
|
|
|
/* ADPCM */
|
|
XA_DATA_START = (0x44-48)
|
|
};
|
|
|
|
inline float constexpr DblToPCMF(double dt) { return float(dt) * (1.f/32768.f); }
|
|
|
|
typedef struct {
|
|
MusicIO::FileInterface *reader;
|
|
size_t committed;
|
|
size_t length;
|
|
bool blockIsMono;
|
|
bool blockIs18K;
|
|
bool finished;
|
|
|
|
double t1, t2;
|
|
double t1_x, t2_x;
|
|
|
|
float block[kBufSize];
|
|
} xa_data;
|
|
|
|
typedef int8_t SoundGroup[128];
|
|
|
|
typedef struct XASector {
|
|
int8_t sectorFiller[48];
|
|
SoundGroup SoundGroups[18];
|
|
} XASector;
|
|
|
|
static double K0[4] = {
|
|
0.0,
|
|
0.9375,
|
|
1.796875,
|
|
1.53125
|
|
};
|
|
static double K1[4] = {
|
|
0.0,
|
|
0.0,
|
|
-0.8125,
|
|
-0.859375
|
|
};
|
|
|
|
|
|
|
|
static int8_t getSoundData(int8_t *buf, int32_t unit, int32_t sample)
|
|
{
|
|
int8_t ret;
|
|
int8_t *p;
|
|
int32_t offset, shift;
|
|
|
|
p = buf;
|
|
shift = (unit%2) * 4;
|
|
|
|
offset = 16 + (unit / 2) + (sample * 4);
|
|
p += offset;
|
|
|
|
ret = (*p >> shift) & 0x0F;
|
|
|
|
if (ret > 7) {
|
|
ret -= 16;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int8_t getFilter(const int8_t *buf, int32_t unit)
|
|
{
|
|
return (*(buf + 4 + unit) >> 4) & 0x03;
|
|
}
|
|
|
|
|
|
static int8_t getRange(const int8_t *buf, int32_t unit)
|
|
{
|
|
return *(buf + 4 + unit) & 0x0F;
|
|
}
|
|
|
|
|
|
static void decodeSoundSectMono(XASector *ssct, xa_data * xad)
|
|
{
|
|
size_t count = 0;
|
|
int8_t snddat, filt, range;
|
|
int32_t unit, sample;
|
|
int32_t sndgrp;
|
|
double tmp2, tmp3, tmp4, tmp5;
|
|
auto &decodeBuf = xad->block;
|
|
|
|
for (sndgrp = 0; sndgrp < kNumOfSGs; sndgrp++)
|
|
{
|
|
for (unit = 0; unit < 8; unit++)
|
|
{
|
|
range = getRange(ssct->SoundGroups[sndgrp], unit);
|
|
filt = getFilter(ssct->SoundGroups[sndgrp], unit);
|
|
for (sample = 0; sample < 28; sample++)
|
|
{
|
|
snddat = getSoundData(ssct->SoundGroups[sndgrp], unit, sample);
|
|
tmp2 = (double)(1 << (12 - range));
|
|
tmp3 = (double)snddat * tmp2;
|
|
tmp4 = xad->t1 * K0[filt];
|
|
tmp5 = xad->t2 * K1[filt];
|
|
xad->t2 = xad->t1;
|
|
xad->t1 = tmp3 + tmp4 + tmp5;
|
|
decodeBuf[count++] = DblToPCMF(xad->t1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void decodeSoundSectStereo(XASector *ssct, xa_data * xad)
|
|
{
|
|
size_t count = 0;
|
|
int8_t snddat, filt, range;
|
|
int8_t filt1, range1;
|
|
int32_t unit, sample;
|
|
int32_t sndgrp;
|
|
double tmp2, tmp3, tmp4, tmp5;
|
|
auto &decodeBuf = xad->block;
|
|
|
|
for (sndgrp = 0; sndgrp < kNumOfSGs; sndgrp++)
|
|
{
|
|
for (unit = 0; unit < 8; unit+= 2)
|
|
{
|
|
range = getRange(ssct->SoundGroups[sndgrp], unit);
|
|
filt = getFilter(ssct->SoundGroups[sndgrp], unit);
|
|
range1 = getRange(ssct->SoundGroups[sndgrp], unit+1);
|
|
filt1 = getFilter(ssct->SoundGroups[sndgrp], unit+1);
|
|
|
|
for (sample = 0; sample < 28; sample++)
|
|
{
|
|
// Channel 1
|
|
snddat = getSoundData(ssct->SoundGroups[sndgrp], unit, sample);
|
|
tmp2 = (double)(1 << (12 - range));
|
|
tmp3 = (double)snddat * tmp2;
|
|
tmp4 = xad->t1 * K0[filt];
|
|
tmp5 = xad->t2 * K1[filt];
|
|
xad->t2 = xad->t1;
|
|
xad->t1 = tmp3 + tmp4 + tmp5;
|
|
decodeBuf[count++] = DblToPCMF(xad->t1);
|
|
|
|
// Channel 2
|
|
snddat = getSoundData(ssct->SoundGroups[sndgrp], unit+1, sample);
|
|
tmp2 = (double)(1 << (12 - range1));
|
|
tmp3 = (double)snddat * tmp2;
|
|
tmp4 = xad->t1_x * K0[filt1];
|
|
tmp5 = xad->t2_x * K1[filt1];
|
|
xad->t2_x = xad->t1_x;
|
|
xad->t1_x = tmp3 + tmp4 + tmp5;
|
|
decodeBuf[count++] = DblToPCMF(xad->t1_x);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Get one decoded block of data
|
|
//
|
|
//==========================================================================
|
|
|
|
static void getNextXABlock(xa_data *xad, bool looping )
|
|
{
|
|
XASector ssct;
|
|
int coding;
|
|
const int SUBMODE_REAL_TIME_SECTOR = (1 << 6);
|
|
const int SUBMODE_FORM = (1 << 5);
|
|
const int SUBMODE_AUDIO_DATA = (1 << 2);
|
|
|
|
do
|
|
{
|
|
size_t bytes = xad->length - xad->reader->tell();
|
|
|
|
if (sizeof(XASector) < bytes)
|
|
bytes = sizeof(XASector);
|
|
|
|
xad->reader->read(&ssct, (int)bytes);
|
|
}
|
|
while (ssct.sectorFiller[46] != (SUBMODE_REAL_TIME_SECTOR | SUBMODE_FORM | SUBMODE_AUDIO_DATA));
|
|
|
|
coding = ssct.sectorFiller[47];
|
|
|
|
xad->committed = 0;
|
|
xad->blockIsMono = (coding & 3) == 0;
|
|
xad->blockIs18K = (((coding >> 2) & 3) == 1);
|
|
|
|
if (!xad->blockIsMono)
|
|
{
|
|
decodeSoundSectStereo(&ssct, xad);
|
|
}
|
|
else
|
|
{
|
|
decodeSoundSectMono(&ssct, xad);
|
|
}
|
|
|
|
if (xad->length == xad->reader->tell())
|
|
{
|
|
if (looping)
|
|
{
|
|
xad->reader->seek(XA_DATA_START, SEEK_SET);
|
|
xad->t1 = xad->t2 = xad->t1_x = xad->t2_x = 0;
|
|
}
|
|
else
|
|
xad->finished = true;
|
|
}
|
|
|
|
xad->finished = false;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// XASong
|
|
//
|
|
//==========================================================================
|
|
|
|
class XASong : public StreamSource
|
|
{
|
|
public:
|
|
XASong(MusicIO::FileInterface *readr);
|
|
SoundStreamInfo GetFormat() override;
|
|
bool Start() override;
|
|
bool GetData(void *buffer, size_t len) override;
|
|
|
|
protected:
|
|
xa_data xad;
|
|
};
|
|
|
|
//==========================================================================
|
|
//
|
|
// XASong - Constructor
|
|
//
|
|
//==========================================================================
|
|
|
|
XASong::XASong(MusicIO::FileInterface * reader)
|
|
{
|
|
reader->seek(0, SEEK_END);
|
|
xad.length = reader->tell();
|
|
reader->seek(XA_DATA_START, SEEK_SET);
|
|
xad.reader = reader;
|
|
xad.t1 = xad.t2 = xad.t1_x = xad.t2_x = 0;
|
|
|
|
getNextXABlock(&xad, false);
|
|
}
|
|
|
|
SoundStreamInfo XASong::GetFormat()
|
|
{
|
|
auto SampleRate = xad.blockIs18K? 18900 : 37800;
|
|
return { 64*1024, SampleRate, 2};
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// XASong :: Play
|
|
//
|
|
//==========================================================================
|
|
|
|
bool XASong::Start()
|
|
{
|
|
if (xad.finished && m_Looping)
|
|
{
|
|
xad.reader->seek(XA_DATA_START, SEEK_SET);
|
|
xad.t1 = xad.t2 = xad.t1_x = xad.t2_x = 0;
|
|
xad.finished = false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// XASong :: Read
|
|
//
|
|
//==========================================================================
|
|
|
|
bool XASong::GetData(void *vbuff, size_t len)
|
|
{
|
|
auto olen = len;
|
|
float *dest = (float*)vbuff;
|
|
while (len > 0)
|
|
{
|
|
auto ptr = xad.committed;
|
|
auto block = xad.block + ptr;
|
|
if (ptr < kBufSize)
|
|
{
|
|
// commit the data
|
|
if (xad.blockIsMono)
|
|
{
|
|
size_t numsamples = len / 8;
|
|
size_t availdata = kBufSize - ptr;
|
|
|
|
for(size_t tocopy = std::min(numsamples, availdata); tocopy > 0; tocopy--)
|
|
{
|
|
float f = *block++;
|
|
*dest++ = f;
|
|
*dest++ = f;
|
|
len -= 8;
|
|
ptr++;
|
|
}
|
|
xad.committed = ptr;
|
|
}
|
|
else
|
|
{
|
|
size_t availdata = (kBufSize - ptr) * 4;
|
|
size_t tocopy = std::min(availdata, len);
|
|
memcpy(dest, block, tocopy);
|
|
dest += tocopy / 4;
|
|
len -= tocopy;
|
|
xad.committed += tocopy / 4;
|
|
}
|
|
}
|
|
if (xad.finished)
|
|
{
|
|
memset(dest, 0, len);
|
|
return true;
|
|
}
|
|
if (len > 0)
|
|
{
|
|
// we ran out of data and need more
|
|
getNextXABlock(&xad, m_Looping);
|
|
// repeat until done.
|
|
}
|
|
else break;
|
|
|
|
}
|
|
return !xad.finished;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// XA_OpenSong
|
|
//
|
|
//==========================================================================
|
|
|
|
StreamSource *XA_OpenSong(MusicIO::FileInterface *reader)
|
|
{
|
|
return new XASong(reader);
|
|
}
|
|
|