1 | //convert.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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5 | * |
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6 | * This file is part of libroar a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * libroar is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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22 | * |
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23 | * NOTE for everyone want's to change something and send patches: |
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24 | * read README and HACKING! There a addition information on |
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25 | * the license of this document you need to read before you send |
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26 | * any patches. |
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27 | * |
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28 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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29 | * or libpulse*: |
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30 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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31 | * and are therefore GPL. Because of this it may be illigal to use |
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32 | * them with any software that uses libesd, libartsc or libpulse*. |
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33 | */ |
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34 | |
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35 | #include "libroardsp.h" |
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36 | //#define free(p) {ROAR_WARN("free(%p) = ?", (p)); free((p)); ROAR_WARN("free(%p): OK", (p));} |
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37 | |
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38 | int roar_conv_bits (void * out, void * in, int samples, int from, int to) { |
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39 | int format; |
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40 | |
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41 | if ( from == to ) { |
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42 | if ( in == out ) |
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43 | return 0; |
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44 | |
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45 | memcpy(out, in, samples * from / 8); |
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46 | return 0; |
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47 | } |
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48 | |
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49 | format = ((from / 8) << 4) + (to / 8); |
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50 | |
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51 | switch (format) { |
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52 | case 0x12: return roar_conv_bits_8to16( out, in, samples); |
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53 | case 0x14: return roar_conv_bits_8to32( out, in, samples); |
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54 | case 0x21: return roar_conv_bits_16to8( out, in, samples); |
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55 | case 0x24: return roar_conv_bits_16to32(out, in, samples); |
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56 | case 0x34: return roar_conv_bits_24to32(out, in, samples); |
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57 | case 0x41: return roar_conv_bits_32to8( out, in, samples); |
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58 | case 0x42: return roar_conv_bits_32to16(out, in, samples); |
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59 | default: |
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60 | errno = ENOSYS; |
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61 | return -1; |
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62 | } |
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63 | |
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64 | return -1; |
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65 | } |
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66 | |
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67 | int roar_conv_bits_8to16 (void * out, void * in, int samples) { |
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68 | char * ip = (char *)in; |
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69 | int16_t * op = (int16_t*)out; |
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70 | int i; |
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71 | |
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72 | for (i = samples - 1; i >= 0; i--) |
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73 | op[i] = ip[i] << 8; |
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74 | |
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75 | return 0; |
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76 | } |
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77 | |
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78 | int roar_conv_bits_8to32 (void * out, void * in, int samples) { |
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79 | char * ip = (char *)in; |
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80 | int32_t * op = (int32_t*)out; |
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81 | int i; |
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82 | |
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83 | for (i = samples - 1; i >= 0; i--) |
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84 | op[i] = (int32_t) ip[i] << 24; |
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85 | |
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86 | return 0; |
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87 | } |
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88 | |
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89 | int roar_conv_bits_16to8 (void * out, void * in, int samples) { |
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90 | int16_t * ip = (int16_t*)in; |
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91 | char * op = (char *)out; |
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92 | int i; |
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93 | |
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94 | ROAR_DBG("roar_conv_bits_16to8(out=%p, in=%p, samples=%i) = ?", out, in, samples); |
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95 | |
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96 | for (i = 0; i < samples; i++) |
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97 | op[i] = ip[i] >> 8; |
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98 | |
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99 | return 0; |
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100 | } |
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101 | |
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102 | int roar_conv_bits_16to32 (void * out, void * in, int samples) { |
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103 | int16_t * ip = (int16_t*)in; |
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104 | int32_t * op = (int32_t*)out; |
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105 | int i; |
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106 | |
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107 | for (i = samples - 1; i >= 0; i--) |
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108 | op[i] = (int32_t) ip[i] << 16; |
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109 | |
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110 | return 0; |
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111 | } |
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112 | |
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113 | int roar_conv_bits_24to32 (void * out, void * in, int samples) { |
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114 | uint8_t * ip = (uint8_t*)in; |
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115 | int32_t * op = (int32_t*)out; |
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116 | int i; |
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117 | union { |
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118 | int32_t i; |
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119 | uint8_t c[4]; |
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120 | } t; |
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121 | |
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122 | ROAR_DBG("roar_conv_bits_24to32(out=%p, in=%p, samples=%i) = ?", out, in, samples); |
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123 | |
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124 | #if (BYTE_ORDER == BIG_ENDIAN) || (BYTE_ORDER == LITTLE_ENDIAN) |
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125 | t.i = 0; |
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126 | #else |
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127 | ROAR_DBG("roar_conv_bits_24to32(out=%p, in=%p, samples=%i) = -1", out, in, samples); |
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128 | return -1; |
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129 | #endif |
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130 | |
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131 | samples--; |
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132 | ip += 3 * samples; |
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133 | |
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134 | for (i = samples; i >= 0; i--) { |
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135 | #if BYTE_ORDER == BIG_ENDIAN |
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136 | t.c[0] = *(ip--); |
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137 | t.c[1] = *(ip--); |
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138 | t.c[2] = *(ip--); |
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139 | #elif BYTE_ORDER == LITTLE_ENDIAN |
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140 | t.c[2] = *(ip--); |
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141 | t.c[3] = *(ip--); |
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142 | t.c[1] = *(ip--); |
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143 | #endif |
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144 | ROAR_DBG("roar_conv_bits_24to32(*): i=%i, t.i=0x%.8X", i, t.i); |
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145 | op[i] = t.i; |
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146 | } |
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147 | |
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148 | ROAR_DBG("roar_conv_bits_24to32(out=%p, in=%p, samples=%i) = 0", out, in, samples); |
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149 | return 0; |
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150 | } |
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151 | |
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152 | int roar_conv_bits_32to8 (void * out, void * in, int samples) { |
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153 | int32_t * ip = (int32_t*)in; |
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154 | char * op = (char *)out; |
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155 | int i; |
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156 | |
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157 | for (i = 0; i < samples; i++) |
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158 | op[i] = ip[i] >> 24; |
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159 | |
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160 | return 0; |
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161 | } |
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162 | |
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163 | int roar_conv_bits_32to16 (void * out, void * in, int samples) { |
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164 | int32_t * ip = (int32_t*)in; |
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165 | int16_t * op = (int16_t*)out; |
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166 | int i; |
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167 | |
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168 | for (i = 0; i < samples; i++) |
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169 | op[i] = ip[i] >> 16; |
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170 | |
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171 | return 0; |
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172 | } |
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173 | |
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174 | int roar_conv_chans (void * out, void * in, int samples, int from, int to, int bits) { |
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175 | if ( from == to ) { |
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176 | if ( in == out ) |
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177 | return 0; |
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178 | |
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179 | memcpy(out, in, samples * from * bits / 8); |
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180 | return 0; |
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181 | } |
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182 | |
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183 | switch (bits) { |
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184 | case 8: |
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185 | switch (from) { |
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186 | case 1: |
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187 | switch (to) { |
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188 | case 2: return roar_conv_chans_1to28(out, in, samples); |
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189 | default: return roar_conv_chans_1ton8(out, in, samples, to); |
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190 | } |
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191 | break; |
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192 | case 2: |
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193 | switch (to) { |
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194 | case 1: return roar_conv_chans_2to18(out, in, samples); |
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195 | default: return -1; |
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196 | } |
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197 | break; |
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198 | default: |
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199 | switch (to) { |
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200 | case 1: return roar_conv_chans_nto18(out, in, samples, from); |
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201 | default: return -1; |
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202 | } |
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203 | } |
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204 | break; |
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205 | case 16: |
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206 | switch (from) { |
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207 | case 1: |
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208 | switch (to) { |
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209 | case 2: return roar_conv_chans_1to216(out, in, samples); |
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210 | default: return roar_conv_chans_1ton16(out, in, samples, to); |
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211 | } |
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212 | break; |
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213 | case 2: |
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214 | switch (to) { |
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215 | case 1: return roar_conv_chans_2to116(out, in, samples); |
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216 | case 3: return roar_conv_chans_2to316(out, in, samples); |
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217 | case 4: return roar_conv_chans_2to416(out, in, samples); |
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218 | case 5: return roar_conv_chans_2to516(out, in, samples); |
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219 | case 6: return roar_conv_chans_2to616(out, in, samples); |
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220 | default: return -1; |
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221 | } |
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222 | break; |
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223 | case 4: |
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224 | switch (to) { |
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225 | case 1: return roar_conv_chans_nto116(out, in, samples, 4); |
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226 | case 2: return roar_conv_chans_4to216(out, in, samples); |
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227 | default: return -1; |
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228 | } |
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229 | break; |
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230 | default: |
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231 | switch (to) { |
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232 | case 1: return roar_conv_chans_nto116(out, in, samples, from); |
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233 | default: return -1; |
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234 | } |
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235 | } |
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236 | break; |
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237 | default: return -1; |
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238 | } |
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239 | |
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240 | return -1; |
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241 | } |
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242 | |
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243 | int roar_conv_chans_1ton8 (void * out, void * in, int samples, int to) { |
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244 | char * ip = (char*) in, * op = (char*) out; |
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245 | int i; |
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246 | int c; |
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247 | |
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248 | for (i = samples - 1; i >= 0; i--) |
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249 | for (c = to - 1; c >= 0; c--) |
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250 | op[i*to + c] = ip[i]; |
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251 | |
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252 | return 0; |
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253 | } |
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254 | |
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255 | int roar_conv_chans_1to28 (void * out, void * in, int samples) { |
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256 | char * ip = (char*) in, * op = (char*) out; |
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257 | int i, h; |
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258 | |
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259 | samples--; |
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260 | |
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261 | for (i = (h = samples) * 2; i >= 0; i -= 2, h--) { |
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262 | op[i + 0] = ip[h]; |
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263 | op[i + 1] = ip[h]; |
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264 | } |
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265 | |
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266 | return 0; |
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267 | } |
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268 | |
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269 | int roar_conv_chans_1ton16 (void * out, void * in, int samples, int to) { |
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270 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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271 | int i; |
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272 | int c; |
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273 | |
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274 | for (i = samples - 1; i >= 0; i--) |
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275 | for (c = to - 1; c >= 0; c--) |
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276 | op[i*to + c] = ip[i]; |
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277 | |
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278 | return 0; |
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279 | } |
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280 | |
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281 | int roar_conv_chans_1to216 (void * out, void * in, int samples) { |
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282 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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283 | int i, h; |
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284 | |
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285 | samples--; |
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286 | |
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287 | for (i = (h = samples) * 2; i >= 0; i -= 2, h--) { |
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288 | op[i + 0] = ip[h]; |
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289 | op[i + 1] = ip[h]; |
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290 | } |
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291 | |
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292 | return 0; |
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293 | } |
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294 | |
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295 | int roar_conv_chans_nto18 (void * out, void * in, int samples, int from) { |
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296 | int8_t * ip = (int8_t*) in, * op = (int8_t*) out; |
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297 | int i; |
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298 | int c; |
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299 | register int s; |
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300 | |
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301 | samples /= from; |
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302 | |
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303 | for (i = samples - 1; i >= 0; i--) { |
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304 | s = 0; |
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305 | |
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306 | for (c = 0; c < from; c++) |
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307 | s += ip[i*from + c]; |
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308 | |
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309 | s /= from; |
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310 | op[i] = s; |
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311 | } |
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312 | |
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313 | return 0; |
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314 | } |
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315 | |
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316 | int roar_conv_chans_2to18 (void * out, void * in, int samples) { |
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317 | int8_t * ip = (int8_t*) in, * op = (int8_t*) out; |
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318 | int i, h; |
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319 | |
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320 | samples -= 2; |
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321 | |
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322 | for (h = (i = samples) / 2; i >= 0; i -= 2, h--) |
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323 | op[h] = ((int)ip[i + 0] + (int)ip[i + 1]) / 2; |
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324 | |
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325 | return 0; |
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326 | } |
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327 | |
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328 | int roar_conv_chans_nto116 (void * out, void * in, int samples, int from) { |
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329 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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330 | int i; |
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331 | int c; |
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332 | register int s; |
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333 | |
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334 | samples /= from; |
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335 | |
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336 | for (i = samples - 1; i >= 0; i--) { |
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337 | s = 0; |
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338 | |
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339 | for (c = 0; c < from; c++) |
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340 | s += ip[i*from + c]; |
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341 | |
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342 | s /= from; |
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343 | op[i] = s; |
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344 | } |
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345 | |
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346 | return 0; |
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347 | } |
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348 | |
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349 | int roar_conv_chans_2to116 (void * out, void * in, int samples) { |
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350 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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351 | int i, h; |
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352 | |
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353 | ROAR_DBG("roar_conv_chans_2to116(out=%p, in=%p, samples=%i) = ?", out, in, samples); |
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354 | |
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355 | samples -= 2; |
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356 | |
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357 | for (h = (i = samples) / 2; i >= 0; i -= 2, h--) { |
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358 | ROAR_DBG("roar_conv_chans_2to116(out=%p, in=%p, samples=%i): op[%i] = (ip[%i] + ip[%i])/2", out, in, samples, h, i, i+1); |
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359 | op[h] = ((int)ip[i + 0] + (int)ip[i + 1]) / 2; |
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360 | } |
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361 | |
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362 | return 0; |
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363 | } |
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364 | |
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365 | int roar_conv_chans_2to38 (void * out, void * in, int samples); |
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366 | int roar_conv_chans_2to316 (void * out, void * in, int samples) { |
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367 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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368 | int i, h; |
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369 | |
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370 | samples -= 2; |
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371 | |
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372 | i = samples; |
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373 | h = (samples / 2) * 3; |
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374 | |
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375 | for (; i >= 0; i -= 2, h -= 3) { |
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376 | op[h+0] = ip[i+0]; |
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377 | op[h+1] = ip[i+1]; |
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378 | op[h+2] = ((int)ip[i + 0] + (int)ip[i + 1]) / 2; |
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379 | } |
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380 | |
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381 | return 0; |
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382 | } |
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383 | |
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384 | int roar_conv_chans_2to48 (void * out, void * in, int samples); |
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385 | int roar_conv_chans_2to416 (void * out, void * in, int samples) { |
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386 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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387 | int i, h; |
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388 | |
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389 | samples -= 2; |
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390 | |
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391 | i = samples; |
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392 | h = (samples / 2) * 4; |
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393 | |
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394 | for (; i >= 0; i -= 2, h -= 4) { |
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395 | op[h+0] = ip[i+0]; |
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396 | op[h+1] = ip[i+1]; |
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397 | op[h+2] = ip[i+0]; |
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398 | op[h+3] = ip[i+1]; |
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399 | } |
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400 | |
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401 | return 0; |
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402 | } |
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403 | |
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404 | int roar_conv_chans_2to58 (void * out, void * in, int samples); |
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405 | int roar_conv_chans_2to516 (void * out, void * in, int samples) { |
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406 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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407 | int i, h; |
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408 | |
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409 | samples -= 2; |
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410 | |
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411 | i = samples; |
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412 | h = (samples / 2) * 5; |
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413 | |
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414 | for (; i >= 0; i -= 2, h -= 5) { |
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415 | op[h+0] = ip[i+0]; |
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416 | op[h+1] = ip[i+1]; |
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417 | op[h+2] = ((int)ip[i + 0] + (int)ip[i + 1]) / 2; |
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418 | op[h+3] = ip[i+0]; |
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419 | op[h+4] = ip[i+1]; |
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420 | } |
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421 | |
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422 | return 0; |
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423 | } |
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424 | int roar_conv_chans_2to68 (void * out, void * in, int samples); |
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425 | int roar_conv_chans_2to616 (void * out, void * in, int samples) { |
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426 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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427 | int i, h; |
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428 | |
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429 | samples -= 2; |
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430 | |
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431 | i = samples; |
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432 | h = (samples / 2) * 6; |
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433 | |
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434 | for (; i >= 0; i -= 2, h -= 6) { |
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435 | op[h+0] = ip[i+0]; |
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436 | op[h+1] = ip[i+1]; |
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437 | op[h+2] = ((int)ip[i + 0] + (int)ip[i + 1]) / 2; |
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438 | op[h+3] = op[h+2]; |
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439 | op[h+4] = ip[i+0]; |
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440 | op[h+5] = ip[i+1]; |
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441 | } |
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442 | |
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443 | return 0; |
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444 | } |
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445 | |
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446 | int roar_conv_chans_3to28 (void * out, void * in, int samples); |
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447 | int roar_conv_chans_3to216 (void * out, void * in, int samples); |
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448 | int roar_conv_chans_4to28 (void * out, void * in, int samples); |
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449 | int roar_conv_chans_4to216 (void * out, void * in, int samples) { |
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450 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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451 | int i, h; |
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452 | |
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453 | samples -= 4; |
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454 | |
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455 | for (i = h = 0; i < samples; i += 4, h += 2) { |
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456 | op[h+0] = ((int)ip[i + 0] + (int)ip[i + 2]) / 2; |
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457 | op[h+1] = ((int)ip[i + 1] + (int)ip[i + 3]) / 2; |
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458 | } |
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459 | |
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460 | return 0; |
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461 | } |
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462 | |
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463 | int roar_conv_chans_5to28 (void * out, void * in, int samples); |
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464 | int roar_conv_chans_5to216 (void * out, void * in, int samples); |
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465 | int roar_conv_chans_6to28 (void * out, void * in, int samples); |
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466 | int roar_conv_chans_6to216 (void * out, void * in, int samples); |
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467 | |
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468 | |
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469 | |
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470 | int roar_conv_rate (void * out, void * in, int samples, int from, int to, int bits, int channels) { |
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471 | #ifdef ROAR_HAVE_LIBSAMPLERATE |
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472 | return roar_conv_rate_SRC(out, in, samples, from, to, bits, channels); |
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473 | #else |
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474 | if ( bits == 8 ) |
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475 | return roar_conv_rate_8(out, in, samples, from, to, channels); |
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476 | |
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477 | if ( bits == 16 ) |
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478 | return roar_conv_rate_16(out, in, samples, from, to, channels); |
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479 | |
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480 | return -1; |
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481 | #endif |
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482 | } |
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483 | |
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484 | int roar_conv_rate_8 (void * out, void * in, int samples, int from, int to, int channels) { |
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485 | return -1; |
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486 | } |
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487 | |
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488 | int roar_conv_rate_16 (void * out, void * in, int samples, int from, int to, int channels) { |
---|
489 | if ( from > to ) { |
---|
490 | switch (channels) { |
---|
491 | case 1: |
---|
492 | return roar_conv_rate_161zoh(out, in, samples, from, to); |
---|
493 | case 2: |
---|
494 | return roar_conv_rate_162zoh(out, in, samples, from, to); |
---|
495 | default: |
---|
496 | return -1; |
---|
497 | } |
---|
498 | } else { |
---|
499 | if ( channels == 1 ) { |
---|
500 | printf("roar_conv_rate_16(): samples=%i -> %i, rate=%i -> %i\n", samples*from/to, samples, from, to); |
---|
501 | return roar_conv_poly4_16s((int16_t*) out, (int16_t*) in, samples, samples*from/to, (float)from/to); |
---|
502 | // return roar_conv_poly4_16((int16_t*) out, (int16_t*) in, samples*to/from, samples); |
---|
503 | } |
---|
504 | } |
---|
505 | |
---|
506 | return -1; |
---|
507 | } |
---|
508 | |
---|
509 | int roar_conv_rate_161zoh(void * out, void * in, int samples, int from, int to) { |
---|
510 | int16_t * ip = in; |
---|
511 | int16_t * op = out; |
---|
512 | float t = 0; |
---|
513 | float step = (float)to/from; |
---|
514 | int i; |
---|
515 | |
---|
516 | for (i= 0; i < samples; i++) { |
---|
517 | op[(int)t] = ip[i]; |
---|
518 | t += step; |
---|
519 | } |
---|
520 | |
---|
521 | return 0; |
---|
522 | } |
---|
523 | |
---|
524 | int roar_conv_rate_162zoh(void * out, void * in, int samples, int from, int to) { |
---|
525 | int16_t * ip = in; |
---|
526 | int16_t * op = out; |
---|
527 | float t = 0; |
---|
528 | float step = (float)to/from; |
---|
529 | int i; |
---|
530 | |
---|
531 | ROAR_DBG("roar_conv_rate_162zoh(*): samples=%i", samples); |
---|
532 | samples /= 2; |
---|
533 | // samples -= 1; |
---|
534 | ROAR_DBG("roar_conv_rate_162zoh(*): samples=%i", samples); |
---|
535 | |
---|
536 | for (i= 0; i < samples; i++) { |
---|
537 | ROAR_DBG("roar_conv_rate_162zoh(*): t=%f, i=%i // op[%i] = ip[%i]", t, i, 2*(int)t, 2*i); |
---|
538 | op[2*(int)t ] = ip[2*i ]; |
---|
539 | op[2*(int)t + 1] = ip[2*i + 1]; |
---|
540 | t += step; |
---|
541 | } |
---|
542 | |
---|
543 | return 0; |
---|
544 | } |
---|
545 | |
---|
546 | int roar_conv_rate_SRC (void * out, void * in, int samples, int from, int to, int bits, int channels) { |
---|
547 | #ifdef ROAR_HAVE_LIBSAMPLERATE |
---|
548 | double radio = (double) to / (double) from; |
---|
549 | int outsamples = radio * samples; |
---|
550 | float * inf = malloc(samples*sizeof(float)); |
---|
551 | float * outf = malloc(outsamples*sizeof(float)); |
---|
552 | int i; |
---|
553 | SRC_DATA srcdata; |
---|
554 | |
---|
555 | ROAR_DBG("roar_conv_rate_SRC(*): radio=%lf, samples=%i, outsamples=%i", radio, samples, outsamples); |
---|
556 | |
---|
557 | if ( inf == NULL ) { |
---|
558 | if ( outf != NULL ) |
---|
559 | free(outf); |
---|
560 | |
---|
561 | return -1; |
---|
562 | } |
---|
563 | |
---|
564 | if ( outf == NULL ) { |
---|
565 | if ( inf != NULL ) |
---|
566 | free(inf); |
---|
567 | |
---|
568 | return -1; |
---|
569 | } |
---|
570 | |
---|
571 | switch (bits) { |
---|
572 | case 8: |
---|
573 | for (i = 0; i < samples; i++) |
---|
574 | inf[i] = *(((int8_t *)in)+i) / 128.0; |
---|
575 | break; |
---|
576 | case 16: |
---|
577 | for (i = 0; i < samples; i++) |
---|
578 | inf[i] = *(((int16_t*)in)+i) / 32768.0; |
---|
579 | break; |
---|
580 | case 32: |
---|
581 | for (i = 0; i < samples; i++) |
---|
582 | inf[i] = *(((int32_t*)in)+i) / 2147483648.0; |
---|
583 | break; |
---|
584 | default: |
---|
585 | free(outf); |
---|
586 | free(inf); |
---|
587 | return -1; |
---|
588 | } |
---|
589 | |
---|
590 | srcdata.data_in = inf; |
---|
591 | srcdata.data_out = outf; |
---|
592 | srcdata.input_frames = samples/channels; |
---|
593 | srcdata.output_frames = outsamples/channels; |
---|
594 | srcdata.src_ratio = radio; |
---|
595 | |
---|
596 | if ( src_simple(&srcdata, SRC_ZERO_ORDER_HOLD, channels) != 0 ) { |
---|
597 | free(outf); |
---|
598 | free(inf); |
---|
599 | return -1; |
---|
600 | } |
---|
601 | |
---|
602 | switch (bits) { |
---|
603 | case 8: |
---|
604 | for (i = 0; i < outsamples; i++) |
---|
605 | *(((int8_t *)out)+i) = outf[i] * 128.0; |
---|
606 | break; |
---|
607 | case 16: |
---|
608 | for (i = 0; i < outsamples; i++) |
---|
609 | *(((int16_t*)out)+i) = outf[i] * 32768.0; |
---|
610 | break; |
---|
611 | case 32: |
---|
612 | for (i = 0; i < outsamples; i++) |
---|
613 | *(((int32_t*)out)+i) = outf[i] * 2147483648.0; |
---|
614 | break; |
---|
615 | // no errors here, they are handled above |
---|
616 | } |
---|
617 | |
---|
618 | free(outf); |
---|
619 | free(inf); |
---|
620 | |
---|
621 | return 0; |
---|
622 | #else |
---|
623 | return -1; |
---|
624 | #endif |
---|
625 | } |
---|
626 | |
---|
627 | int roar_conv_signedness (void * out, void * in, int samples, int from, int to, int bits) { |
---|
628 | |
---|
629 | if ( from != to ) { |
---|
630 | if ( from && !to ) { |
---|
631 | switch (bits) { |
---|
632 | case 8: roar_conv_codec_s2u8( out, in, samples); break; |
---|
633 | case 16: roar_conv_codec_s2u16(out, in, samples); break; |
---|
634 | case 32: roar_conv_codec_s2u32(out, in, samples); break; |
---|
635 | default: |
---|
636 | errno = ENOSYS; |
---|
637 | return -1; |
---|
638 | } |
---|
639 | } else if ( !from && to ) { |
---|
640 | switch (bits) { |
---|
641 | case 8: roar_conv_codec_u2s8( out, in, samples); break; |
---|
642 | case 16: roar_conv_codec_u2s16(out, in, samples); break; |
---|
643 | case 32: roar_conv_codec_u2s32(out, in, samples); break; |
---|
644 | default: |
---|
645 | errno = ENOSYS; |
---|
646 | return -1; |
---|
647 | } |
---|
648 | } else { |
---|
649 | return -1; |
---|
650 | } |
---|
651 | } else { |
---|
652 | if ( out == in ) |
---|
653 | return 0; |
---|
654 | |
---|
655 | memcpy(out, in, samples * bits / 8); |
---|
656 | return 0; |
---|
657 | } |
---|
658 | |
---|
659 | return 0; |
---|
660 | } |
---|
661 | |
---|
662 | int roar_conv_codec (void * out, void * in, int samples, int from, int to, int bits) { |
---|
663 | int inbo = ROAR_CODEC_BYTE_ORDER(from), outbo = ROAR_CODEC_BYTE_ORDER(to); |
---|
664 | int ins = ROAR_CODEC_IS_SIGNED(from), outs = ROAR_CODEC_IS_SIGNED(to); |
---|
665 | void * nin = in; |
---|
666 | |
---|
667 | |
---|
668 | ROAR_DBG("roar_conv_codec(out=%p, in=%p, samples=%i, from=%i(%s), to=%i(%s), bits=%i) = ?", |
---|
669 | out, in, samples, from, roar_codec2str(from), to, roar_codec2str(to), bits); |
---|
670 | |
---|
671 | roar_conv_endian(out, in, samples, inbo, outbo, bits); |
---|
672 | nin = out; |
---|
673 | |
---|
674 | return roar_conv_signedness(out, in, samples, ins, outs, bits); |
---|
675 | } |
---|
676 | |
---|
677 | int roar_conv_codec_s2u8 (void * out, void * in, int samples) { |
---|
678 | char * ip = in; |
---|
679 | unsigned char * op = out; |
---|
680 | int i; |
---|
681 | |
---|
682 | for(i = 0; i < samples; i++) |
---|
683 | op[i] = ip[i] + 128; |
---|
684 | |
---|
685 | return 0; |
---|
686 | } |
---|
687 | |
---|
688 | int roar_conv_codec_s2u16 (void * out, void * in, int samples) { |
---|
689 | int16_t * ip = in; |
---|
690 | uint16_t * op = out; |
---|
691 | int i; |
---|
692 | |
---|
693 | for(i = 0; i < samples; i++) |
---|
694 | op[i] = ip[i] + 32768; |
---|
695 | |
---|
696 | return 0; |
---|
697 | } |
---|
698 | |
---|
699 | int roar_conv_codec_s2u32 (void * out, void * in, int samples) { |
---|
700 | int32_t * ip = in; |
---|
701 | uint32_t * op = out; |
---|
702 | int i; |
---|
703 | |
---|
704 | for(i = 0; i < samples; i++) |
---|
705 | op[i] = ip[i] + 2147483648U; |
---|
706 | |
---|
707 | return 0; |
---|
708 | } |
---|
709 | |
---|
710 | int roar_conv_codec_u2s8 (void * out, void * in, int samples) { |
---|
711 | unsigned char * ip = in; |
---|
712 | char * op = out; |
---|
713 | int i; |
---|
714 | |
---|
715 | for(i = 0; i < samples; i++) |
---|
716 | op[i] = ip[i] - 128; |
---|
717 | |
---|
718 | return 0; |
---|
719 | } |
---|
720 | |
---|
721 | int roar_conv_codec_u2s16 (void * out, void * in, int samples) { |
---|
722 | uint16_t * ip = in; |
---|
723 | int16_t * op = out; |
---|
724 | int i; |
---|
725 | |
---|
726 | for(i = 0; i < samples; i++) |
---|
727 | op[i] = ip[i] - 32768; |
---|
728 | |
---|
729 | return 0; |
---|
730 | } |
---|
731 | |
---|
732 | int roar_conv_codec_u2s32 (void * out, void * in, int samples) { |
---|
733 | uint32_t * ip = in; |
---|
734 | int32_t * op = out; |
---|
735 | int i; |
---|
736 | |
---|
737 | for(i = 0; i < samples; i++) |
---|
738 | op[i] = ip[i] - 2147483648U; |
---|
739 | |
---|
740 | return 0; |
---|
741 | } |
---|
742 | |
---|
743 | |
---|
744 | int roar_conv_endian (void * out, void * in, int samples, int from, int to, int bits) { |
---|
745 | |
---|
746 | if ( bits == 8 ) { |
---|
747 | from = to = ROAR_CODEC_NATIVE_ENDIAN; |
---|
748 | |
---|
749 | } else if ( bits == 16 ) { |
---|
750 | if ( from == ROAR_CODEC_PDP ) |
---|
751 | from = ROAR_CODEC_LE; |
---|
752 | if ( to == ROAR_CODEC_PDP ) |
---|
753 | to = ROAR_CODEC_LE; |
---|
754 | } |
---|
755 | |
---|
756 | ROAR_DBG("roar_conv_endian(out=%p, in=%p, samples=%i, from=%i, to=%i, bits=%i) = ?", out, in, samples, from, to, bits); |
---|
757 | |
---|
758 | if ( from == to ) { |
---|
759 | if ( in != out ) { |
---|
760 | memcpy(out, in, samples * bits / 8); |
---|
761 | } |
---|
762 | return 0; |
---|
763 | } else { |
---|
764 | if ( bits == 16 ) { |
---|
765 | // in this case we can only have LE vs. BE, so, only need to swap: |
---|
766 | ROAR_DBG("roar_conv_endian(*): Doing 16 bit byteswap"); |
---|
767 | return roar_conv_endian_16(out, in, samples); |
---|
768 | } else if ( bits == 24 ) { |
---|
769 | if ( (from == ROAR_CODEC_LE || from == ROAR_CODEC_BE) && (to == ROAR_CODEC_LE || to == ROAR_CODEC_BE) ) { |
---|
770 | return roar_conv_endian_24(out, in, samples); |
---|
771 | } else { // what the hell is PDP eddines in 24 bit mode? |
---|
772 | return -1; |
---|
773 | } |
---|
774 | } else if ( bits == 32 ) { |
---|
775 | if ( (from == ROAR_CODEC_LE || from == ROAR_CODEC_BE) && (to == ROAR_CODEC_LE || to == ROAR_CODEC_BE) ) { |
---|
776 | return roar_conv_endian_32(out, in, samples); |
---|
777 | } else { // need to handle 32 PDP eddines here? |
---|
778 | return -1; |
---|
779 | } |
---|
780 | } else { |
---|
781 | return -1; |
---|
782 | } |
---|
783 | } |
---|
784 | |
---|
785 | return -1; |
---|
786 | } |
---|
787 | |
---|
788 | |
---|
789 | int roar_conv_endian_16 (void * out, void * in, int samples) { |
---|
790 | char * ip = in; |
---|
791 | char * op = out; |
---|
792 | register char c; |
---|
793 | int i; |
---|
794 | |
---|
795 | samples *= 2; |
---|
796 | |
---|
797 | if ( out != in ) { |
---|
798 | // printf("out != in\n"); |
---|
799 | for(i = 0; i < samples; i += 2) { |
---|
800 | // printf("op[%i] = ip[%i]\nop[%i] = ip[%i]\n", i, i+1, i+1, i); |
---|
801 | op[i ] = ip[i+1]; |
---|
802 | op[i+1] = ip[i ]; |
---|
803 | } |
---|
804 | } else { |
---|
805 | // printf("out == in\n"); |
---|
806 | for(i = 0; i < samples; i += 2) { |
---|
807 | c = ip[i+1]; |
---|
808 | op[i+1] = ip[i ]; |
---|
809 | op[i ] = c; |
---|
810 | } |
---|
811 | } |
---|
812 | |
---|
813 | return 0; |
---|
814 | } |
---|
815 | |
---|
816 | int roar_conv_endian_24 (void * out, void * in, int samples) { |
---|
817 | char * ip = in; |
---|
818 | char * op = out; |
---|
819 | register char c; |
---|
820 | int i; |
---|
821 | |
---|
822 | samples *= 3; |
---|
823 | |
---|
824 | if ( out != in ) { |
---|
825 | // printf("out != in\n"); |
---|
826 | for(i = 0; i < samples; i += 3) { |
---|
827 | // printf("op[%i] = ip[%i]\nop[%i] = ip[%i]\n", i, i+1, i+1, i); |
---|
828 | op[i ] = ip[i+2]; |
---|
829 | op[i+2] = ip[i ]; |
---|
830 | } |
---|
831 | } else { |
---|
832 | // printf("out == in\n"); |
---|
833 | for(i = 0; i < samples; i += 3) { |
---|
834 | c = ip[i+2]; |
---|
835 | op[i+2] = ip[i ]; |
---|
836 | op[i ] = c; |
---|
837 | } |
---|
838 | } |
---|
839 | |
---|
840 | return 0; |
---|
841 | } |
---|
842 | |
---|
843 | int roar_conv_endian_32 (void * out, void * in, int samples) { |
---|
844 | int32_t * ip = in; |
---|
845 | int32_t * op = out; |
---|
846 | union { |
---|
847 | int32_t val; |
---|
848 | char data[4]; |
---|
849 | } c, h; |
---|
850 | int i; |
---|
851 | |
---|
852 | // may the holly optimizer save our souls! |
---|
853 | |
---|
854 | ROAR_DBG("roar_conv_endian_32(out=%p, in=%p, samples=%i) = ?", out, in, samples); |
---|
855 | |
---|
856 | for (i = 0; i < samples; i++) { |
---|
857 | c.val = ip[i]; |
---|
858 | h.data[0] = c.data[3]; |
---|
859 | h.data[1] = c.data[2]; |
---|
860 | h.data[2] = c.data[1]; |
---|
861 | h.data[3] = c.data[0]; |
---|
862 | op[i] = h.val; |
---|
863 | } |
---|
864 | |
---|
865 | return 0; |
---|
866 | } |
---|
867 | |
---|
868 | int roar_conv (void * out, void * in, int samples, struct roar_audio_info * from, struct roar_audio_info * to) { |
---|
869 | void * ip = in; |
---|
870 | void * real_out = NULL; |
---|
871 | size_t from_size, to_size; |
---|
872 | |
---|
873 | // TODO: decide how to work around both in and out beeing to small to hold all |
---|
874 | // data between the steps. |
---|
875 | // for the moment: guess out >= in |
---|
876 | |
---|
877 | from_size = (from->bits * samples) / 8; |
---|
878 | to_size = ( to->bits * samples * to->rate * to->channels) / (8 * from->rate * from->channels); |
---|
879 | |
---|
880 | ROAR_DBG("roar_conv(*): size: %i->%i", from_size, to_size); |
---|
881 | |
---|
882 | if ( to_size < from_size ) { |
---|
883 | real_out = out; |
---|
884 | |
---|
885 | if ( (out = malloc(from_size)) == NULL ) |
---|
886 | return -1; |
---|
887 | |
---|
888 | ROAR_DBG("roar_conv(*): malloc(%i)=%p", (int)from_size, out); |
---|
889 | } |
---|
890 | |
---|
891 | ROAR_DBG("roar_conv(*): bo conv: %i->%i(native)", ROAR_CODEC_BYTE_ORDER(from->codec), ROAR_CODEC_NATIVE_ENDIAN); |
---|
892 | |
---|
893 | if ( ROAR_CODEC_BYTE_ORDER(from->codec) != ROAR_CODEC_NATIVE_ENDIAN ) { |
---|
894 | ROAR_DBG("roar_conv(*): doing bo input conv"); |
---|
895 | if ( roar_conv_endian(out, ip, samples, ROAR_CODEC_BYTE_ORDER(from->codec), ROAR_CODEC_NATIVE_ENDIAN, from->bits) == -1 ) { |
---|
896 | if ( to_size < from_size ) |
---|
897 | free(out); |
---|
898 | return -1; |
---|
899 | } else { |
---|
900 | ip = out; |
---|
901 | } |
---|
902 | } |
---|
903 | |
---|
904 | if ( from->bits != to->bits ) { |
---|
905 | if ( roar_conv_bits(out, ip, samples, from->bits, to->bits) == -1 ) { |
---|
906 | if ( to_size < from_size ) |
---|
907 | free(out); |
---|
908 | return -1; |
---|
909 | } else { |
---|
910 | ip = out; |
---|
911 | } |
---|
912 | } |
---|
913 | |
---|
914 | if ( ROAR_CODEC_IS_SIGNED(from->codec) != ROAR_CODEC_IS_SIGNED(to->codec) ) { |
---|
915 | if ( roar_conv_signedness(out, ip, samples, ROAR_CODEC_IS_SIGNED(from->codec), ROAR_CODEC_IS_SIGNED(to->codec), to->bits) == -1 ) { |
---|
916 | if ( to_size < from_size ) |
---|
917 | free(out); |
---|
918 | return -1; |
---|
919 | } else { |
---|
920 | ip = out; |
---|
921 | } |
---|
922 | } |
---|
923 | |
---|
924 | /* |
---|
925 | if ( from->codec != to->codec ) { |
---|
926 | if ( roar_conv_codec (out, ip, samples, from->codec, to->codec, to->bits) == -1 ) |
---|
927 | return -1; |
---|
928 | else |
---|
929 | ip = out; |
---|
930 | } |
---|
931 | */ |
---|
932 | |
---|
933 | if ( from->rate != to->rate ) { |
---|
934 | if ( roar_conv_rate(out, ip, samples, from->rate, to->rate, to->bits, from->channels) == -1 ) { |
---|
935 | ROAR_DBG("roar_conv(*): failed to convert rate %i->%i (%ich%ibits)", from->rate, to->rate, to->bits, from->channels); |
---|
936 | if ( to_size < from_size ) |
---|
937 | free(out); |
---|
938 | return -1; |
---|
939 | } else { |
---|
940 | ip = out; |
---|
941 | samples = (samples * to->rate) / from->rate; |
---|
942 | } |
---|
943 | } |
---|
944 | |
---|
945 | if ( from->channels != to->channels ) { |
---|
946 | if ( roar_conv_chans(out, ip, samples, from->channels, to->channels, to->bits) == -1 ) { |
---|
947 | if ( to_size < from_size ) |
---|
948 | free(out); |
---|
949 | return -1; |
---|
950 | } else { |
---|
951 | ip = out; |
---|
952 | } |
---|
953 | } |
---|
954 | |
---|
955 | if ( ROAR_CODEC_BYTE_ORDER(to->codec) != ROAR_CODEC_NATIVE_ENDIAN ) { |
---|
956 | if ( roar_conv_endian(out, ip, samples, ROAR_CODEC_NATIVE_ENDIAN, ROAR_CODEC_BYTE_ORDER(to->codec), to->bits) == -1 ) { |
---|
957 | if ( to_size < from_size ) |
---|
958 | free(out); |
---|
959 | return -1; |
---|
960 | } else { |
---|
961 | ip = out; |
---|
962 | } |
---|
963 | } |
---|
964 | |
---|
965 | if ( to_size < from_size ) { |
---|
966 | ROAR_DBG("roar_conv(*): memcpy(%p, %p, %i) = ?", real_out, out, (int)to_size); |
---|
967 | memcpy(real_out, out, to_size); |
---|
968 | free(out); |
---|
969 | ROAR_DBG("roar_conv(*): free(%p): OK!", out); |
---|
970 | } |
---|
971 | |
---|
972 | return 0; |
---|
973 | } |
---|
974 | |
---|
975 | int roar_conv2(void * out, void * in, |
---|
976 | size_t inlen, |
---|
977 | struct roar_audio_info * from, struct roar_audio_info * to, |
---|
978 | size_t bufsize) { |
---|
979 | size_t samples; |
---|
980 | size_t needed_buffer; |
---|
981 | void * cin = in; |
---|
982 | struct roar_audio_info cinfo; |
---|
983 | int need_signed = 0; |
---|
984 | |
---|
985 | memcpy(&cinfo, from, sizeof(cinfo)); |
---|
986 | |
---|
987 | ROAR_DBG("roar_conv2(out=%p, in=%p, inlen=%lu, from=%p{...}, to=%p{...}, bufsize=%lu", out, in, inlen, from, to, bufsize); |
---|
988 | |
---|
989 | /* |
---|
990 | if ( in != out ) { |
---|
991 | memset(out, 0xA0, bufsize); |
---|
992 | } else { |
---|
993 | ROAR_WARN("roar_conv2(*): in==out!"); |
---|
994 | memset(out+inlen, 0xA0, bufsize-inlen); |
---|
995 | } |
---|
996 | */ |
---|
997 | |
---|
998 | // calcumate number of input samples: |
---|
999 | samples = (inlen * 8) / (from->bits); |
---|
1000 | |
---|
1001 | ROAR_DBG("roar_conv2(*): input samples: %i", samples); |
---|
1002 | |
---|
1003 | // calculate size per frame |
---|
1004 | needed_buffer = ROAR_MAX(from->channels, to->channels) * ROAR_MAX(from->bits, to->bits) / 8; |
---|
1005 | |
---|
1006 | needed_buffer *= samples; |
---|
1007 | needed_buffer /= from->channels; |
---|
1008 | |
---|
1009 | if ( from->rate < to->rate ) |
---|
1010 | needed_buffer *= (float)to->rate/(float)from->rate; |
---|
1011 | |
---|
1012 | ROAR_DBG("roar_conv2(*): needed_buffer=%u, bufsize=%u", needed_buffer, bufsize); |
---|
1013 | |
---|
1014 | // chjeck if we have enogth RAM to convert |
---|
1015 | if ( needed_buffer > bufsize ) |
---|
1016 | return -1; |
---|
1017 | |
---|
1018 | if ( from->rate != to->rate || from->channels != to->channels ) |
---|
1019 | need_signed = 1; |
---|
1020 | |
---|
1021 | ROAR_DBG("roar_conv2(*): need_signed=%i", need_signed); |
---|
1022 | |
---|
1023 | if ( ROAR_CODEC_BYTE_ORDER(from->codec) != ROAR_CODEC_NATIVE_ENDIAN ) { |
---|
1024 | ROAR_DBG("roar_conv2(*): doing bo input conv"); |
---|
1025 | if ( roar_conv_endian(out, cin, samples, |
---|
1026 | ROAR_CODEC_BYTE_ORDER(from->codec), ROAR_CODEC_NATIVE_ENDIAN, from->bits) == -1 ) { |
---|
1027 | return -1; |
---|
1028 | } |
---|
1029 | cin = out; |
---|
1030 | } |
---|
1031 | |
---|
1032 | if ( to->bits > from->bits ) { |
---|
1033 | ROAR_DBG("roar_conv2(*): bits: %i->%i", from->bits, to->bits); |
---|
1034 | if ( roar_conv_bits(out, cin, samples, from->bits, to->bits) == -1 ) |
---|
1035 | return -1; |
---|
1036 | |
---|
1037 | cin = out; |
---|
1038 | cinfo.bits = to->bits; |
---|
1039 | } |
---|
1040 | |
---|
1041 | if ( need_signed && ! ROAR_CODEC_IS_SIGNED(from->codec) ) { |
---|
1042 | ROAR_DBG("roar_conv2(*): sign: unsigned->signed"); |
---|
1043 | if ( roar_conv_signedness(out, cin, samples, |
---|
1044 | ROAR_CODEC_IS_SIGNED(from->codec), ROAR_CODEC_IS_SIGNED(to->codec), |
---|
1045 | cinfo.bits) == -1 ) |
---|
1046 | return -1; |
---|
1047 | |
---|
1048 | cin = out; |
---|
1049 | cinfo.codec = ROAR_CODEC_PCM_S_LE; // just a signed PCM, which is of no intrest |
---|
1050 | } |
---|
1051 | |
---|
1052 | if ( to->channels > from->channels ) { |
---|
1053 | ROAR_DBG("roar_conv2(*): channels: %i->%i", from->channels, to->channels); |
---|
1054 | if ( roar_conv_chans(out, cin, samples, from->channels, to->channels, cinfo.bits) == -1 ) |
---|
1055 | return -1; |
---|
1056 | |
---|
1057 | cin = out; |
---|
1058 | cinfo.channels = to->channels; |
---|
1059 | } |
---|
1060 | |
---|
1061 | //--// |
---|
1062 | if ( from->rate != to->rate ) { |
---|
1063 | if ( roar_conv_rate(out, cin, samples, from->rate, to->rate, cinfo.bits, cinfo.channels) == -1 ) |
---|
1064 | return -1; |
---|
1065 | |
---|
1066 | cin = out; |
---|
1067 | samples = (float)samples * (float)to->rate / (float)from->rate; |
---|
1068 | cinfo.rate = to->rate; |
---|
1069 | } |
---|
1070 | |
---|
1071 | if ( cinfo.channels != to->channels ) { |
---|
1072 | ROAR_DBG("roar_conv2(*): channels: %i->%i", cinfo.channels, to->channels); |
---|
1073 | if ( roar_conv_chans(out, cin, samples, cinfo.channels, to->channels, cinfo.bits) == -1 ) |
---|
1074 | return -1; |
---|
1075 | |
---|
1076 | cin = out; |
---|
1077 | cinfo.channels = to->channels; |
---|
1078 | } |
---|
1079 | |
---|
1080 | if ( ROAR_CODEC_IS_SIGNED(cinfo.codec) != ROAR_CODEC_IS_SIGNED(to->codec) ) { |
---|
1081 | ROAR_DBG("roar_conv2(*): sign: ?(%i)->?(%i)", ROAR_CODEC_IS_SIGNED(cinfo.codec), ROAR_CODEC_IS_SIGNED(to->codec)); |
---|
1082 | if ( roar_conv_signedness(out, cin, samples, |
---|
1083 | ROAR_CODEC_IS_SIGNED(cinfo.codec), ROAR_CODEC_IS_SIGNED(to->codec), |
---|
1084 | cinfo.bits) == -1 ) |
---|
1085 | return -1; |
---|
1086 | |
---|
1087 | cin = out; |
---|
1088 | cinfo.codec = to->codec; |
---|
1089 | } |
---|
1090 | |
---|
1091 | if ( cinfo.bits != to->bits ) { |
---|
1092 | ROAR_DBG("roar_conv2(*): bits: %i->%i", cinfo.bits, to->bits); |
---|
1093 | if ( roar_conv_bits(out, cin, samples, cinfo.bits, to->bits) == -1 ) |
---|
1094 | return -1; |
---|
1095 | |
---|
1096 | cin = out; |
---|
1097 | cinfo.bits = to->bits; |
---|
1098 | } |
---|
1099 | |
---|
1100 | if ( ROAR_CODEC_BYTE_ORDER(to->codec) != ROAR_CODEC_NATIVE_ENDIAN ) { |
---|
1101 | ROAR_DBG("roar_conv2(*): doing bo output conv"); |
---|
1102 | if ( roar_conv_endian(out, cin, samples, |
---|
1103 | ROAR_CODEC_NATIVE_ENDIAN, ROAR_CODEC_BYTE_ORDER(to->codec), to->bits) == -1 ) { |
---|
1104 | return -1; |
---|
1105 | } |
---|
1106 | cin = out; |
---|
1107 | } |
---|
1108 | |
---|
1109 | ROAR_DBG("roar_conv2(*) = 0"); |
---|
1110 | return 0; |
---|
1111 | } |
---|
1112 | |
---|
1113 | int roar_conv_poly4_16 (int16_t * out, int16_t * in, size_t olen, size_t ilen) { |
---|
1114 | return roar_conv_poly4_16s(out, in, olen, ilen, (float)ilen/olen); |
---|
1115 | } |
---|
1116 | |
---|
1117 | int roar_conv_poly4_16s (int16_t * out, int16_t * in, size_t olen, size_t ilen, float step) { |
---|
1118 | float poly[4]; |
---|
1119 | float data[4]; |
---|
1120 | float t = 0; |
---|
1121 | int16_t * ci = in; |
---|
1122 | int io, ii = 0; |
---|
1123 | int i; |
---|
1124 | |
---|
1125 | printf("step=%f\n", step); |
---|
1126 | |
---|
1127 | // we can not make a poly4 with less than 4 points ;) |
---|
1128 | if ( ilen < 4 ) |
---|
1129 | return -1; |
---|
1130 | |
---|
1131 | for (i = 0; i < 4; i++) |
---|
1132 | data[i] = ci[i]; |
---|
1133 | roar_math_mkpoly_4x4(poly, data); |
---|
1134 | /* |
---|
1135 | printf("new poly: data[4] = {%f, %f, %f, %f}, poly[4] = {%f, %f, %f, %f}\n", |
---|
1136 | data[0], data[1], data[2], data[3], |
---|
1137 | poly[0], poly[1], poly[2], poly[3] |
---|
1138 | ); |
---|
1139 | */ |
---|
1140 | |
---|
1141 | //0 1 2 3 |
---|
1142 | |
---|
1143 | for (io = 0; io < olen; io++) { |
---|
1144 | // printf("t=%f\n", t); |
---|
1145 | out[io] = roar_math_cvpoly_4x4(poly, t); |
---|
1146 | t += step; |
---|
1147 | if ( t > 2 ) { // we need a new ploynome |
---|
1148 | // printf("t > 2, need new data\n"); |
---|
1149 | if ( (ii + 4) < ilen ) { // else: end of block. |
---|
1150 | t -= 1; |
---|
1151 | // printf("new data: ii=%i\n", ii); |
---|
1152 | ii++; |
---|
1153 | ci++; |
---|
1154 | for (i = 0; i < 4; i++) |
---|
1155 | data[i] = ci[i]; |
---|
1156 | roar_math_mkpoly_4x4(poly, data); |
---|
1157 | /* |
---|
1158 | printf("new poly: data[4] = {%f, %f, %f, %f}, poly[4] = {%f, %f, %f, %f}\n", |
---|
1159 | data[0], data[1], data[2], data[3], |
---|
1160 | poly[0], poly[1], poly[2], poly[3] |
---|
1161 | ); |
---|
1162 | */ |
---|
1163 | } |
---|
1164 | } |
---|
1165 | } |
---|
1166 | |
---|
1167 | printf("io=%i\n", io); |
---|
1168 | |
---|
1169 | return 0; |
---|
1170 | } |
---|
1171 | |
---|
1172 | //ll |
---|