#include "config.h" #include "sample_cvt.h" #ifdef HAVE_ALLOCA_H #include #endif #ifdef HAVE_MALLOC_H #include #endif #include "AL/al.h" #include "alu.h" #include "alBuffer.h" #ifdef HAVE_C99_VLA #define DECL_VLA(T, _name, _size) T _name[(_size)] #else #define DECL_VLA(T, _name, _size) T *_name = alloca((_size) * sizeof(T)) #endif /* 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 */ 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 */ 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(ALubyte); DECL_TEMPLATE(ALshort); 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 int-type to int-type functions */ static inline ALubyte Conv_ALubyte_ALshort(ALshort val) { return (val>>8) + 128; } static inline ALshort Conv_ALshort_ALubyte(ALubyte val) { return (val-128) << 8; } /* Define int-type to fp functions */ static inline ALfloat Conv_ALfloat_ALubyte(ALubyte val) { return (val-128) * (1.0f/128.0f); } static inline ALdouble Conv_ALdouble_ALubyte(ALubyte val) { return (val-128) * (1.0/128.0); } static inline ALfloat Conv_ALfloat_ALshort(ALshort val) { return val * (1.0f/32768.0f); } static inline ALdouble Conv_ALdouble_ALshort(ALshort val) { return val * (1.0/32768.0); } /* Define fp to int-type functions */ static inline ALubyte Conv_ALubyte_ALfloat(ALfloat val) { val *= 128.0f; if(val >= 127.0f) return 255; if(val <= -128.0f) return 0; return (ALbyte)val + 128; } static inline ALubyte Conv_ALubyte_ALdouble(ALdouble val) { return Conv_ALubyte_ALfloat(val); } static inline ALshort Conv_ALshort_ALfloat(ALfloat val) { val *= 32768.0f; if(val >= 32767.0f) return 32767; if(val <= -32768.0f) return -32768; return (ALshort)val; } static inline ALshort Conv_ALshort_ALdouble(ALdouble val) { return Conv_ALshort_ALfloat(val); } /* 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(ALubyte) DECL_TEMPLATE(ALshort) 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, ALsizei numchans, \ ALsizei len, ALsizei UNUSED(align)) \ { \ ALsizei i; \ len *= numchans; \ for(i = 0;i < len;i++) \ *(dst++) = Conv_##T1##_##T2(*(src++)); \ } #define DECL_TEMPLATE2(T) \ DECL_TEMPLATE(T, ALubyte) \ DECL_TEMPLATE(T, ALshort) \ DECL_TEMPLATE(T, ALfloat) \ DECL_TEMPLATE(T, ALdouble) \ DECL_TEMPLATE(T, ALmulaw) \ DECL_TEMPLATE(T, ALalaw) DECL_TEMPLATE2(ALubyte) DECL_TEMPLATE2(ALshort) 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, ALsizei numchans, \ ALsizei len, ALsizei align) \ { \ ALsizei byte_align = ((align-1)/2 + 4) * numchans; \ DECL_VLA(ALshort, tmp, align*numchans); \ ALsizei 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(ALubyte) static void Convert_ALshort_ALima4(ALshort *dst, const ALima4 *src, ALsizei numchans, ALsizei len, ALsizei align) { ALsizei byte_align = ((align-1)/2 + 4) * numchans; ALsizei 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(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, ALsizei numchans, \ ALsizei len, ALsizei 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); \ ALsizei 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(ALubyte) static void Convert_ALima4_ALshort(ALima4 *dst, const ALshort *src, ALsizei numchans, ALsizei len, ALsizei 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; ALsizei 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(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, \ ALsizei numchans, ALsizei len, \ ALsizei align) \ { \ ALsizei byte_align = ((align-2)/2 + 7) * numchans; \ DECL_VLA(ALshort, tmp, align*numchans); \ ALsizei 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(ALubyte) static void Convert_ALshort_ALmsadpcm(ALshort *dst, const ALmsadpcm *src, ALsizei numchans, ALsizei len, ALsizei align) { ALsizei byte_align = ((align-2)/2 + 7) * numchans; ALsizei 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(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, \ ALsizei numchans, ALsizei len, \ ALsizei 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); \ ALsizei 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(ALubyte) static void Convert_ALmsadpcm_ALshort(ALmsadpcm *dst, const ALshort *src, ALsizei numchans, ALsizei len, ALsizei align) { ALint sample[MAX_INPUT_CHANNELS] = {0,0,0,0,0,0,0,0}; ALsizei byte_align = ((align-2)/2 + 7) * numchans; ALsizei 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(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), ALsizei UNUSED(numchans), ALsizei UNUSED(len), ALsizei UNUSED(align)) { ERR("Unexpected IMA4-to-IMA4 conversion!\n"); } static void Convert_ALmsadpcm_ALmsadpcm(ALmsadpcm* UNUSED(dst), const ALmsadpcm* UNUSED(src), ALsizei UNUSED(numchans), ALsizei UNUSED(len), ALsizei UNUSED(align)) { ERR("Unexpected MSADPCM-to-MSADPCM conversion!\n"); } static void Convert_ALmsadpcm_ALima4(ALmsadpcm* UNUSED(dst), const ALima4* UNUSED(src), ALsizei UNUSED(numchans), ALsizei UNUSED(len), ALsizei UNUSED(align)) { ERR("Unexpected IMA4-to-MSADPCM conversion!\n"); } static void Convert_ALima4_ALmsadpcm(ALima4* UNUSED(dst), const ALmsadpcm* UNUSED(src), ALsizei UNUSED(numchans), ALsizei UNUSED(len), ALsizei 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 UserFmtUByte: \ Convert_##T##_ALubyte(dst, src, numchans, len, align); \ break; \ case UserFmtShort: \ Convert_##T##_ALshort(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(ALubyte) DECL_TEMPLATE(ALshort) 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 UserFmtUByte: Convert_ALubyte(dst, src, srcType, numchans, len, align); break; case UserFmtShort: Convert_ALshort(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; } }