#include "config.h"
#include "sample_cvt.h"
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include "AL/al.h"
#include "alu.h"
#include "alBuffer.h"
/* IMA ADPCM Stepsize table */
static const int IMAStep_size[89] = {
7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19,
21, 23, 25, 28, 31, 34, 37, 41, 45, 50, 55,
60, 66, 73, 80, 88, 97, 107, 118, 130, 143, 157,
173, 190, 209, 230, 253, 279, 307, 337, 371, 408, 449,
494, 544, 598, 658, 724, 796, 876, 963, 1060, 1166, 1282,
1411, 1552, 1707, 1878, 2066, 2272, 2499, 2749, 3024, 3327, 3660,
4026, 4428, 4871, 5358, 5894, 6484, 7132, 7845, 8630, 9493,10442,
11487,12635,13899,15289,16818,18500,20350,22358,24633,27086,29794,
32767
};
/* IMA4 ADPCM Codeword decode table */
static const int IMA4Codeword[16] = {
1, 3, 5, 7, 9, 11, 13, 15,
-1,-3,-5,-7,-9,-11,-13,-15,
};
/* IMA4 ADPCM Step index adjust decode table */
static const int IMA4Index_adjust[16] = {
-1,-1,-1,-1, 2, 4, 6, 8,
-1,-1,-1,-1, 2, 4, 6, 8
};
/* MSADPCM Adaption table */
static const int MSADPCMAdaption[16] = {
230, 230, 230, 230, 307, 409, 512, 614,
768, 614, 512, 409, 307, 230, 230, 230
};
/* MSADPCM Adaption Coefficient tables */
static const int MSADPCMAdaptionCoeff[7][2] = {
{ 256, 0 },
{ 512, -256 },
{ 0, 0 },
{ 192, 64 },
{ 240, 0 },
{ 460, -208 },
{ 392, -232 }
};
/* A quick'n'dirty lookup table to decode a muLaw-encoded byte sample into a
* signed 16-bit sample */
static const ALshort muLawDecompressionTable[256] = {
-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
-15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
-11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
-876, -844, -812, -780, -748, -716, -684, -652,
-620, -588, -556, -524, -492, -460, -428, -396,
-372, -356, -340, -324, -308, -292, -276, -260,
-244, -228, -212, -196, -180, -164, -148, -132,
-120, -112, -104, -96, -88, -80, -72, -64,
-56, -48, -40, -32, -24, -16, -8, 0,
32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
876, 844, 812, 780, 748, 716, 684, 652,
620, 588, 556, 524, 492, 460, 428, 396,
372, 356, 340, 324, 308, 292, 276, 260,
244, 228, 212, 196, 180, 164, 148, 132,
120, 112, 104, 96, 88, 80, 72, 64,
56, 48, 40, 32, 24, 16, 8, 0
};
/* Values used when encoding a muLaw sample */
static const int muLawBias = 0x84;
static const int muLawClip = 32635;
static const char muLawCompressTable[256] = {
0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
};
/* A quick'n'dirty lookup table to decode an aLaw-encoded byte sample into a
* signed 16-bit sample */
static const ALshort aLawDecompressionTable[256] = {
-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
-22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
-30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
-11008,-10496,-12032,-11520, -8960, -8448, -9984, -9472,
-15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
-344, -328, -376, -360, -280, -264, -312, -296,
-472, -456, -504, -488, -408, -392, -440, -424,
-88, -72, -120, -104, -24, -8, -56, -40,
-216, -200, -248, -232, -152, -136, -184, -168,
-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
-688, -656, -752, -720, -560, -528, -624, -592,
-944, -912, -1008, -976, -816, -784, -880, -848,
5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
344, 328, 376, 360, 280, 264, 312, 296,
472, 456, 504, 488, 408, 392, 440, 424,
88, 72, 120, 104, 24, 8, 56, 40,
216, 200, 248, 232, 152, 136, 184, 168,
1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
688, 656, 752, 720, 560, 528, 624, 592,
944, 912, 1008, 976, 816, 784, 880, 848
};
/* Values used when encoding an aLaw sample */
static const int aLawClip = 32635;
static const char aLawCompressTable[128] = {
1,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
};
typedef ALubyte ALmulaw;
typedef ALubyte ALalaw;
typedef ALubyte ALima4;
typedef ALubyte ALmsadpcm;
static inline ALshort DecodeMuLaw(ALmulaw val)
{ return muLawDecompressionTable[val]; }
static ALmulaw EncodeMuLaw(ALshort val)
{
ALint mant, exp, sign;
sign = (val>>8) & 0x80;
if(sign)
{
/* -32768 doesn't properly negate on a short; it results in itself.
* So clamp to -32767 */
val = maxi(val, -32767);
val = -val;
}
val = mini(val, muLawClip);
val += muLawBias;
exp = muLawCompressTable[(val>>7) & 0xff];
mant = (val >> (exp+3)) & 0x0f;
return ~(sign | (exp<<4) | mant);
}
static inline ALshort DecodeALaw(ALalaw val)
{ return aLawDecompressionTable[val]; }
static ALalaw EncodeALaw(ALshort val)
{
ALint mant, exp, sign;
sign = ((~val) >> 8) & 0x80;
if(!sign)
{
val = maxi(val, -32767);
val = -val;
}
val = mini(val, aLawClip);
if(val >= 256)
{
exp = aLawCompressTable[(val>>8) & 0x7f];
mant = (val >> (exp+3)) & 0x0f;
}
else
{
exp = 0;
mant = val >> 4;
}
return ((exp<<4) | mant) ^ (sign^0x55);
}
static void DecodeIMA4Block(ALshort *dst, const ALima4 *src, ALint numchans, ALsizei align)
{
ALint sample[MAX_INPUT_CHANNELS], index[MAX_INPUT_CHANNELS];
ALuint code[MAX_INPUT_CHANNELS];
ALsizei j,k,c;
for(c = 0;c < numchans;c++)
{
sample[c] = *(src++);
sample[c] |= *(src++) << 8;
sample[c] = (sample[c]^0x8000) - 32768;
index[c] = *(src++);
index[c] |= *(src++) << 8;
index[c] = (index[c]^0x8000) - 32768;
index[c] = clampi(index[c], 0, 88);
dst[c] = sample[c];
}
for(j = 1;j < align;j += 8)
{
for(c = 0;c < numchans;c++)
{
code[c] = *(src++);
code[c] |= *(src++) << 8;
code[c] |= *(src++) << 16;
code[c] |= *(src++) << 24;
}
for(k = 0;k < 8;k++)
{
for(c = 0;c < numchans;c++)
{
int nibble = code[c]&0xf;
code[c] >>= 4;
sample[c] += IMA4Codeword[nibble] * IMAStep_size[index[c]] / 8;
sample[c] = clampi(sample[c], -32768, 32767);
index[c] += IMA4Index_adjust[nibble];
index[c] = clampi(index[c], 0, 88);
dst[(j+k)*numchans + c] = sample[c];
}
}
}
}
static void EncodeIMA4Block(ALima4 *dst, const ALshort *src, ALint *sample, ALint *index, ALint numchans, ALsizei align)
{
ALsizei j,k,c;
for(c = 0;c < numchans;c++)
{
int diff = src[c] - sample[c];
int step = IMAStep_size[index[c]];
int nibble;
nibble = 0;
if(diff < 0)
{
nibble = 0x8;
diff = -diff;
}
diff = mini(step*2, diff);
nibble |= (diff*8/step - 1) / 2;
sample[c] += IMA4Codeword[nibble] * step / 8;
sample[c] = clampi(sample[c], -32768, 32767);
index[c] += IMA4Index_adjust[nibble];
index[c] = clampi(index[c], 0, 88);
*(dst++) = sample[c] & 0xff;
*(dst++) = (sample[c]>>8) & 0xff;
*(dst++) = index[c] & 0xff;
*(dst++) = (index[c]>>8) & 0xff;
}
for(j = 1;j < align;j += 8)
{
for(c = 0;c < numchans;c++)
{
for(k = 0;k < 8;k++)
{
int diff = src[(j+k)*numchans + c] - sample[c];
int step = IMAStep_size[index[c]];
int nibble;
nibble = 0;
if(diff < 0)
{
nibble = 0x8;
diff = -diff;
}
diff = mini(step*2, diff);
nibble |= (diff*8/step - 1) / 2;
sample[c] += IMA4Codeword[nibble] * step / 8;
sample[c] = clampi(sample[c], -32768, 32767);
index[c] += IMA4Index_adjust[nibble];
index[c] = clampi(index[c], 0, 88);
if(!(k&1)) *dst = nibble;
else *(dst++) |= nibble<<4;
}
}
}
}
static void DecodeMSADPCMBlock(ALshort *dst, const ALmsadpcm *src, ALint numchans, ALsizei align)
{
ALubyte blockpred[MAX_INPUT_CHANNELS];
ALint delta[MAX_INPUT_CHANNELS];
ALshort samples[MAX_INPUT_CHANNELS][2];
ALint i, j;
for(i = 0;i < numchans;i++)
{
blockpred[i] = *(src++);
blockpred[i] = minu(blockpred[i], 6);
}
for(i = 0;i < numchans;i++)
{
delta[i] = *(src++);
delta[i] |= *(src++) << 8;
delta[i] = (delta[i]^0x8000) - 0x8000;
}
for(i = 0;i < numchans;i++)
{
samples[i][0] = *(src++);
samples[i][0] |= *(src++) << 8;
samples[i][0] = (samples[i][0]^0x8000) - 0x8000;
}
for(i = 0;i < numchans;i++)
{
samples[i][1] = *(src++);
samples[i][1] |= *(src++) << 8;
samples[i][1] = (samples[i][1]^0x8000) - 0x8000;
}
/* Second sample is written first. */
for(i = 0;i < numchans;i++)
*(dst++) = samples[i][1];
for(i = 0;i < numchans;i++)
*(dst++) = samples[i][0];
for(j = 2;j < align;j++)
{
for(i = 0;i < numchans;i++)
{
const ALint num = (j*numchans) + i;
ALint nibble, pred;
/* Read the nibble (first is in the upper bits). */
if(!(num&1))
nibble = (*src>>4)&0x0f;
else
nibble = (*(src++))&0x0f;
pred = (samples[i][0]*MSADPCMAdaptionCoeff[blockpred[i]][0] +
samples[i][1]*MSADPCMAdaptionCoeff[blockpred[i]][1]) / 256;
pred += ((nibble^0x08) - 0x08) * delta[i];
pred = clampi(pred, -32768, 32767);
samples[i][1] = samples[i][0];
samples[i][0] = pred;
delta[i] = (MSADPCMAdaption[nibble] * delta[i]) / 256;
delta[i] = maxi(16, delta[i]);
*(dst++) = pred;
}
}
}
/* NOTE: This encoder is pretty dumb/simplistic. Some kind of pre-processing
* that tries to find the optimal block predictors would be nice, at least. A
* multi-pass method that can generate better deltas would be good, too. */
static void EncodeMSADPCMBlock(ALmsadpcm *dst, const ALshort *src, ALint *sample, ALint numchans, ALsizei align)
{
ALubyte blockpred[MAX_INPUT_CHANNELS];
ALint delta[MAX_INPUT_CHANNELS];
ALshort samples[MAX_INPUT_CHANNELS][2];
ALint i, j;
/* Block predictor */
for(i = 0;i < numchans;i++)
{
/* FIXME: Calculate something better. */
blockpred[i] = 0;
*(dst++) = blockpred[i];
}
/* Initial delta */
for(i = 0;i < numchans;i++)
{
delta[i] = 16;
*(dst++) = (delta[i] ) & 0xff;
*(dst++) = (delta[i]>>8) & 0xff;
}
/* Initial sample 1 */
for(i = 0;i < numchans;i++)
{
samples[i][0] = src[1*numchans + i];
*(dst++) = (samples[i][0] ) & 0xff;
*(dst++) = (samples[i][0]>>8) & 0xff;
}
/* Initial sample 2 */
for(i = 0;i < numchans;i++)
{
samples[i][1] = src[i];
*(dst++) = (samples[i][1] ) & 0xff;
*(dst++) = (samples[i][1]>>8) & 0xff;
}
for(j = 2;j < align;j++)
{
for(i = 0;i < numchans;i++)
{
const ALint num = (j*numchans) + i;
ALint nibble = 0;
ALint bias;
sample[i] = (samples[i][0]*MSADPCMAdaptionCoeff[blockpred[i]][0] +
samples[i][1]*MSADPCMAdaptionCoeff[blockpred[i]][1]) / 256;
nibble = src[num] - sample[i];
if(nibble >= 0)
bias = delta[i] / 2;
else
bias = -delta[i] / 2;
nibble = (nibble + bias) / delta[i];
nibble = clampi(nibble, -8, 7)&0x0f;
sample[i] += ((nibble^0x08)-0x08) * delta[i];
sample[i] = clampi(sample[i], -32768, 32767);
samples[i][1] = samples[i][0];
samples[i][0] = sample[i];
delta[i] = (MSADPCMAdaption[nibble] * delta[i]) / 256;
delta[i] = maxi(16, delta[i]);
if(!(num&1))
*dst = nibble << 4;
else
{
*dst |= nibble;
dst++;
}
}
}
}
/* Define same-type pass-through sample conversion functions (excludes ADPCM,
* which are block-based). */
#define DECL_TEMPLATE(T) \
static inline T Conv_##T##_##T(T val) { return val; }
DECL_TEMPLATE(ALbyte);
DECL_TEMPLATE(ALubyte);
DECL_TEMPLATE(ALshort);
DECL_TEMPLATE(ALushort);
DECL_TEMPLATE(ALint);
DECL_TEMPLATE(ALuint);
DECL_TEMPLATE(ALalaw);
DECL_TEMPLATE(ALmulaw);
/* Slightly special handling for floats and doubles (converts NaN to 0, and
* allows float<->double pass-through).
*/
static inline ALfloat Conv_ALfloat_ALfloat(ALfloat val)
{ return (val==val) ? val : 0.0f; }
static inline ALfloat Conv_ALfloat_ALdouble(ALdouble val)
{ return (val==val) ? (ALfloat)val : 0.0f; }
static inline ALdouble Conv_ALdouble_ALfloat(ALfloat val)
{ return (val==val) ? (ALdouble)val : 0.0; }
static inline ALdouble Conv_ALdouble_ALdouble(ALdouble val)
{ return (val==val) ? val : 0.0; }
#undef DECL_TEMPLATE
/* Define alternate-sign functions. */
#define DECL_TEMPLATE(T1, T2, O) \
static inline T1 Conv_##T1##_##T2(T2 val) { return (T1)val - O; } \
static inline T2 Conv_##T2##_##T1(T1 val) { return (T2)val + O; }
DECL_TEMPLATE(ALbyte, ALubyte, 128);
DECL_TEMPLATE(ALshort, ALushort, 32768);
DECL_TEMPLATE(ALint, ALuint, 2147483648u);
#undef DECL_TEMPLATE
/* Define int-type to int-type functions */
#define DECL_TEMPLATE(T, ST, UT, SH) \
static inline T Conv_##T##_##ST(ST val){ return val >> SH; } \
static inline T Conv_##T##_##UT(UT val){ return Conv_##ST##_##UT(val) >> SH; }\
static inline ST Conv_##ST##_##T(T val){ return val << SH; } \
static inline UT Conv_##UT##_##T(T val){ return Conv_##UT##_##ST(val << SH); }
#define DECL_TEMPLATE2(T1, T2, SH) \
DECL_TEMPLATE(AL##T1, AL##T2, ALu##T2, SH) \
DECL_TEMPLATE(ALu##T1, ALu##T2, AL##T2, SH)
DECL_TEMPLATE2(byte, short, 8)
DECL_TEMPLATE2(short, int, 16)
DECL_TEMPLATE2(byte, int, 24)
#undef DECL_TEMPLATE2
#undef DECL_TEMPLATE
/* Define int-type to fp functions */
#define DECL_TEMPLATE(T, ST, UT, OP) \
static inline T Conv_##T##_##ST(ST val) { return (T)val * OP; } \
static inline T Conv_##T##_##UT(UT val) { return (T)Conv_##ST##_##UT(val) * OP; }
#define DECL_TEMPLATE2(T1, T2, OP) \
DECL_TEMPLATE(T1, AL##T2, ALu##T2, OP)
DECL_TEMPLATE2(ALfloat, byte, (1.0f/128.0f))
DECL_TEMPLATE2(ALdouble, byte, (1.0/128.0))
DECL_TEMPLATE2(ALfloat, short, (1.0f/32768.0f))
DECL_TEMPLATE2(ALdouble, short, (1.0/32768.0))
DECL_TEMPLATE2(ALdouble, int, (1.0/2147483648.0))
/* Special handling for int32 to float32, since it would overflow. */
static inline ALfloat Conv_ALfloat_ALint(ALint val)
{ return (ALfloat)(val>>7) * (1.0f/16777216.0f); }
static inline ALfloat Conv_ALfloat_ALuint(ALuint val)
{ return (ALfloat)(Conv_ALint_ALuint(val)>>7) * (1.0f/16777216.0f); }
#undef DECL_TEMPLATE2
#undef DECL_TEMPLATE
/* Define fp to int-type functions */
#define DECL_TEMPLATE(FT, T, smin, smax) \
static inline AL##T Conv_AL##T##_##FT(FT val) \
{ \
val *= (FT)smax + 1; \
if(val >= (FT)smax) return smax; \
if(val <= (FT)smin) return smin; \
return (AL##T)val; \
} \
static inline ALu##T Conv_ALu##T##_##FT(FT val) \
{ return Conv_ALu##T##_AL##T(Conv_AL##T##_##FT(val)); }
DECL_TEMPLATE(ALfloat, byte, -128, 127)
DECL_TEMPLATE(ALdouble, byte, -128, 127)
DECL_TEMPLATE(ALfloat, short, -32768, 32767)
DECL_TEMPLATE(ALdouble, short, -32768, 32767)
DECL_TEMPLATE(ALdouble, int, -2147483647-1, 2147483647)
/* Special handling for float32 to int32, since it would overflow. */
static inline ALint Conv_ALint_ALfloat(ALfloat val)
{
val *= 16777216.0f;
if(val >= 16777215.0f) return 0x7fffff80/*16777215 << 7*/;
if(val <= -16777216.0f) return 0x80000000/*-16777216 << 7*/;
return (ALint)val << 7;
}
static inline ALuint Conv_ALuint_ALfloat(ALfloat val)
{ return Conv_ALuint_ALint(Conv_ALint_ALfloat(val)); }
#undef DECL_TEMPLATE
/* Define muLaw and aLaw functions (goes through short functions). */
#define DECL_TEMPLATE(T) \
static inline ALmulaw Conv_ALmulaw_##T(T val) \
{ return EncodeMuLaw(Conv_ALshort_##T(val)); } \
static inline T Conv_##T##_ALmulaw(ALmulaw val) \
{ return Conv_##T##_ALshort(DecodeMuLaw(val)); } \
\
static inline ALalaw Conv_ALalaw_##T(T val) \
{ return EncodeALaw(Conv_ALshort_##T(val)); } \
static inline T Conv_##T##_ALalaw(ALalaw val) \
{ return Conv_##T##_ALshort(DecodeALaw(val)); }
DECL_TEMPLATE(ALbyte)
DECL_TEMPLATE(ALubyte)
DECL_TEMPLATE(ALshort)
DECL_TEMPLATE(ALushort)
DECL_TEMPLATE(ALint)
DECL_TEMPLATE(ALuint)
DECL_TEMPLATE(ALfloat)
DECL_TEMPLATE(ALdouble)
#undef DECL_TEMPLATE
/* Define muLaw <-> aLaw functions. */
static inline ALalaw Conv_ALalaw_ALmulaw(ALmulaw val)
{ return EncodeALaw(DecodeMuLaw(val)); }
static inline ALmulaw Conv_ALmulaw_ALalaw(ALalaw val)
{ return EncodeMuLaw(DecodeALaw(val)); }
#define DECL_TEMPLATE(T1, T2) \
static void Convert_##T1##_##T2(T1 *dst, const T2 *src, ALuint numchans, \
ALuint len, ALsizei UNUSED(align)) \
{ \
ALuint i, j; \
for(i = 0;i < len;i++) \
{ \
for(j = 0;j < numchans;j++) \
*(dst++) = Conv_##T1##_##T2(*(src++)); \
} \
}
#define DECL_TEMPLATE2(T) \
DECL_TEMPLATE(T, ALbyte) \
DECL_TEMPLATE(T, ALubyte) \
DECL_TEMPLATE(T, ALshort) \
DECL_TEMPLATE(T, ALushort) \
DECL_TEMPLATE(T, ALint) \
DECL_TEMPLATE(T, ALuint) \
DECL_TEMPLATE(T, ALfloat) \
DECL_TEMPLATE(T, ALdouble) \
DECL_TEMPLATE(T, ALmulaw) \
DECL_TEMPLATE(T, ALalaw)
DECL_TEMPLATE2(ALbyte)
DECL_TEMPLATE2(ALubyte)
DECL_TEMPLATE2(ALshort)
DECL_TEMPLATE2(ALushort)
DECL_TEMPLATE2(ALint)
DECL_TEMPLATE2(ALuint)
DECL_TEMPLATE2(ALfloat)
DECL_TEMPLATE2(ALdouble)
DECL_TEMPLATE2(ALmulaw)
DECL_TEMPLATE2(ALalaw)
#undef DECL_TEMPLATE2
#undef DECL_TEMPLATE
#define DECL_TEMPLATE(T) \
static void Convert_##T##_ALima4(T *dst, const ALima4 *src, ALuint numchans, \
ALuint len, ALuint align) \
{ \
ALsizei byte_align = ((align-1)/2 + 4) * numchans; \
DECL_VLA(ALshort, tmp, align*numchans); \
ALuint i, j, k; \
\
assert(align > 0 && (len%align) == 0); \
for(i = 0;i < len;i += align) \
{ \
DecodeIMA4Block(tmp, src, numchans, align); \
src += byte_align; \
\
for(j = 0;j < align;j++) \
{ \
for(k = 0;k < numchans;k++) \
*(dst++) = Conv_##T##_ALshort(tmp[j*numchans + k]); \
} \
} \
}
DECL_TEMPLATE(ALbyte)
DECL_TEMPLATE(ALubyte)
static void Convert_ALshort_ALima4(ALshort *dst, const ALima4 *src, ALuint numchans,
ALuint len, ALuint align)
{
ALsizei byte_align = ((align-1)/2 + 4) * numchans;
ALuint i;
assert(align > 0 && (len%align) == 0);
for(i = 0;i < len;i += align)
{
DecodeIMA4Block(dst, src, numchans, align);
src += byte_align;
dst += align*numchans;
}
}
DECL_TEMPLATE(ALushort)
DECL_TEMPLATE(ALint)
DECL_TEMPLATE(ALuint)
DECL_TEMPLATE(ALfloat)
DECL_TEMPLATE(ALdouble)
DECL_TEMPLATE(ALmulaw)
DECL_TEMPLATE(ALalaw)
#undef DECL_TEMPLATE
#define DECL_TEMPLATE(T) \
static void Convert_ALima4_##T(ALima4 *dst, const T *src, ALuint numchans, \
ALuint len, ALuint align) \
{ \
ALint sample[MAX_INPUT_CHANNELS] = {0,0,0,0,0,0,0,0}; \
ALint index[MAX_INPUT_CHANNELS] = {0,0,0,0,0,0,0,0}; \
ALsizei byte_align = ((align-1)/2 + 4) * numchans; \
DECL_VLA(ALshort, tmp, align*numchans); \
ALuint i, j, k; \
\
assert(align > 0 && (len%align) == 0); \
for(i = 0;i < len;i += align) \
{ \
for(j = 0;j < align;j++) \
{ \
for(k = 0;k < numchans;k++) \
tmp[j*numchans + k] = Conv_ALshort_##T(*(src++)); \
} \
EncodeIMA4Block(dst, tmp, sample, index, numchans, align); \
dst += byte_align; \
} \
}
DECL_TEMPLATE(ALbyte)
DECL_TEMPLATE(ALubyte)
static void Convert_ALima4_ALshort(ALima4 *dst, const ALshort *src,
ALuint numchans, ALuint len, ALuint align)
{
ALint sample[MAX_INPUT_CHANNELS] = {0,0,0,0,0,0,0,0};
ALint index[MAX_INPUT_CHANNELS] = {0,0,0,0,0,0,0,0};
ALsizei byte_align = ((align-1)/2 + 4) * numchans;
ALuint i;
assert(align > 0 && (len%align) == 0);
for(i = 0;i < len;i += align)
{
EncodeIMA4Block(dst, src, sample, index, numchans, align);
src += align*numchans;
dst += byte_align;
}
}
DECL_TEMPLATE(ALushort)
DECL_TEMPLATE(ALint)
DECL_TEMPLATE(ALuint)
DECL_TEMPLATE(ALfloat)
DECL_TEMPLATE(ALdouble)
DECL_TEMPLATE(ALmulaw)
DECL_TEMPLATE(ALalaw)
#undef DECL_TEMPLATE
#define DECL_TEMPLATE(T) \
static void Convert_##T##_ALmsadpcm(T *dst, const ALmsadpcm *src, \
ALuint numchans, ALuint len, \
ALuint align) \
{ \
ALsizei byte_align = ((align-2)/2 + 7) * numchans; \
DECL_VLA(ALshort, tmp, align*numchans); \
ALuint i, j, k; \
\
assert(align > 1 && (len%align) == 0); \
for(i = 0;i < len;i += align) \
{ \
DecodeMSADPCMBlock(tmp, src, numchans, align); \
src += byte_align; \
\
for(j = 0;j < align;j++) \
{ \
for(k = 0;k < numchans;k++) \
*(dst++) = Conv_##T##_ALshort(tmp[j*numchans + k]); \
} \
} \
}
DECL_TEMPLATE(ALbyte)
DECL_TEMPLATE(ALubyte)
static void Convert_ALshort_ALmsadpcm(ALshort *dst, const ALmsadpcm *src,
ALuint numchans, ALuint len,
ALuint align)
{
ALsizei byte_align = ((align-2)/2 + 7) * numchans;
ALuint i;
assert(align > 1 && (len%align) == 0);
for(i = 0;i < len;i += align)
{
DecodeMSADPCMBlock(dst, src, numchans, align);
src += byte_align;
dst += align*numchans;
}
}
DECL_TEMPLATE(ALushort)
DECL_TEMPLATE(ALint)
DECL_TEMPLATE(ALuint)
DECL_TEMPLATE(ALfloat)
DECL_TEMPLATE(ALdouble)
DECL_TEMPLATE(ALmulaw)
DECL_TEMPLATE(ALalaw)
#undef DECL_TEMPLATE
#define DECL_TEMPLATE(T) \
static void Convert_ALmsadpcm_##T(ALmsadpcm *dst, const T *src, \
ALuint numchans, ALuint len, ALuint align) \
{ \
ALint sample[MAX_INPUT_CHANNELS] = {0,0,0,0,0,0,0,0}; \
ALsizei byte_align = ((align-2)/2 + 7) * numchans; \
DECL_VLA(ALshort, tmp, align*numchans); \
ALuint i, j, k; \
\
assert(align > 1 && (len%align) == 0); \
for(i = 0;i < len;i += align) \
{ \
for(j = 0;j < align;j++) \
{ \
for(k = 0;k < numchans;k++) \
tmp[j*numchans + k] = Conv_ALshort_##T(*(src++)); \
} \
EncodeMSADPCMBlock(dst, tmp, sample, numchans, align); \
dst += byte_align; \
} \
}
DECL_TEMPLATE(ALbyte)
DECL_TEMPLATE(ALubyte)
static void Convert_ALmsadpcm_ALshort(ALmsadpcm *dst, const ALshort *src,
ALuint numchans, ALuint len, ALuint align)
{
ALint sample[MAX_INPUT_CHANNELS] = {0,0,0,0,0,0,0,0};
ALsizei byte_align = ((align-2)/2 + 7) * numchans;
ALuint i;
assert(align > 1 && (len%align) == 0);
for(i = 0;i < len;i += align)
{
EncodeMSADPCMBlock(dst, src, sample, numchans, align);
src += align*numchans;
dst += byte_align;
}
}
DECL_TEMPLATE(ALushort)
DECL_TEMPLATE(ALint)
DECL_TEMPLATE(ALuint)
DECL_TEMPLATE(ALfloat)
DECL_TEMPLATE(ALdouble)
DECL_TEMPLATE(ALmulaw)
DECL_TEMPLATE(ALalaw)
#undef DECL_TEMPLATE
/* NOTE: We don't store compressed samples internally, so these conversions
* should never happen. */
static void Convert_ALima4_ALima4(ALima4* UNUSED(dst), const ALima4* UNUSED(src),
ALuint UNUSED(numchans), ALuint UNUSED(len),
ALuint UNUSED(align))
{
ERR("Unexpected IMA4-to-IMA4 conversion!\n");
}
static void Convert_ALmsadpcm_ALmsadpcm(ALmsadpcm* UNUSED(dst), const ALmsadpcm* UNUSED(src),
ALuint UNUSED(numchans), ALuint UNUSED(len),
ALuint UNUSED(align))
{
ERR("Unexpected MSADPCM-to-MSADPCM conversion!\n");
}
static void Convert_ALmsadpcm_ALima4(ALmsadpcm* UNUSED(dst), const ALima4* UNUSED(src),
ALuint UNUSED(numchans), ALuint UNUSED(len),
ALuint UNUSED(align))
{
ERR("Unexpected IMA4-to-MSADPCM conversion!\n");
}
static void Convert_ALima4_ALmsadpcm(ALima4* UNUSED(dst), const ALmsadpcm* UNUSED(src),
ALuint UNUSED(numchans), ALuint UNUSED(len),
ALuint UNUSED(align))
{
ERR("Unexpected MSADPCM-to-IMA4 conversion!\n");
}
#define DECL_TEMPLATE(T) \
static void Convert_##T(T *dst, const ALvoid *src, enum UserFmtType srcType, \
ALsizei numchans, ALsizei len, ALsizei align) \
{ \
switch(srcType) \
{ \
case UserFmtByte: \
Convert_##T##_ALbyte(dst, src, numchans, len, align); \
break; \
case UserFmtUByte: \
Convert_##T##_ALubyte(dst, src, numchans, len, align); \
break; \
case UserFmtShort: \
Convert_##T##_ALshort(dst, src, numchans, len, align); \
break; \
case UserFmtUShort: \
Convert_##T##_ALushort(dst, src, numchans, len, align); \
break; \
case UserFmtInt: \
Convert_##T##_ALint(dst, src, numchans, len, align); \
break; \
case UserFmtUInt: \
Convert_##T##_ALuint(dst, src, numchans, len, align); \
break; \
case UserFmtFloat: \
Convert_##T##_ALfloat(dst, src, numchans, len, align); \
break; \
case UserFmtDouble: \
Convert_##T##_ALdouble(dst, src, numchans, len, align); \
break; \
case UserFmtMulaw: \
Convert_##T##_ALmulaw(dst, src, numchans, len, align); \
break; \
case UserFmtAlaw: \
Convert_##T##_ALalaw(dst, src, numchans, len, align); \
break; \
case UserFmtIMA4: \
Convert_##T##_ALima4(dst, src, numchans, len, align); \
break; \
case UserFmtMSADPCM: \
Convert_##T##_ALmsadpcm(dst, src, numchans, len, align); \
break; \
} \
}
DECL_TEMPLATE(ALbyte)
DECL_TEMPLATE(ALubyte)
DECL_TEMPLATE(ALshort)
DECL_TEMPLATE(ALushort)
DECL_TEMPLATE(ALint)
DECL_TEMPLATE(ALuint)
DECL_TEMPLATE(ALfloat)
DECL_TEMPLATE(ALdouble)
DECL_TEMPLATE(ALmulaw)
DECL_TEMPLATE(ALalaw)
DECL_TEMPLATE(ALima4)
DECL_TEMPLATE(ALmsadpcm)
#undef DECL_TEMPLATE
void ConvertData(ALvoid *dst, enum UserFmtType dstType, const ALvoid *src, enum UserFmtType srcType, ALsizei numchans, ALsizei len, ALsizei align)
{
switch(dstType)
{
case UserFmtByte:
Convert_ALbyte(dst, src, srcType, numchans, len, align);
break;
case UserFmtUByte:
Convert_ALubyte(dst, src, srcType, numchans, len, align);
break;
case UserFmtShort:
Convert_ALshort(dst, src, srcType, numchans, len, align);
break;
case UserFmtUShort:
Convert_ALushort(dst, src, srcType, numchans, len, align);
break;
case UserFmtInt:
Convert_ALint(dst, src, srcType, numchans, len, align);
break;
case UserFmtUInt:
Convert_ALuint(dst, src, srcType, numchans, len, align);
break;
case UserFmtFloat:
Convert_ALfloat(dst, src, srcType, numchans, len, align);
break;
case UserFmtDouble:
Convert_ALdouble(dst, src, srcType, numchans, len, align);
break;
case UserFmtMulaw:
Convert_ALmulaw(dst, src, srcType, numchans, len, align);
break;
case UserFmtAlaw:
Convert_ALalaw(dst, src, srcType, numchans, len, align);
break;
case UserFmtIMA4:
Convert_ALima4(dst, src, srcType, numchans, len, align);
break;
case UserFmtMSADPCM:
Convert_ALmsadpcm(dst, src, srcType, numchans, len, align);
break;
}
}