1 | //channels.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2013 |
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5 | * |
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6 | * This file is part of libroardsp 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 | * libroardsp 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, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | */ |
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25 | |
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26 | #include "libroardsp.h" |
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27 | #include "roaraudio/units.h" |
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28 | |
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29 | static struct { |
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30 | int id; |
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31 | char * name; |
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32 | char * sn; |
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33 | } _g_chans[] = { |
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34 | // general: |
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35 | {ROARDSP_CHAN_NONE, "NONE", "NONE" }, |
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36 | // waveform: |
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37 | {ROARDSP_CHAN_FRONT_LEFT, "FRONT_LEFT", "FL" }, |
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38 | {ROARDSP_CHAN_FRONT_RIGHT, "FRONT_RIGHT", "FR" }, |
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39 | {ROARDSP_CHAN_SIDE_LEFT, "SIDE_LEFT", "SL" }, |
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40 | {ROARDSP_CHAN_SIDE_RIGHT, "SIDE_RIGHT", "SR" }, |
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41 | {ROARDSP_CHAN_BACK_LEFT, "BACK_LEFT", "BL" }, |
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42 | {ROARDSP_CHAN_BACK_RIGHT, "BACK_RIGHT", "BR" }, |
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43 | {ROARDSP_CHAN_FRONT_CENTER, "FRONT_CENTER", "FC" }, |
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44 | {ROARDSP_CHAN_SIDE_CENTER, "SIDE_CENTER", "SC" }, |
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45 | {ROARDSP_CHAN_BACK_CENTER, "BACK_CENTER", "BC" }, |
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46 | {ROARDSP_CHAN_LEFT, "LEFT", "L" }, // alias |
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47 | {ROARDSP_CHAN_RIGHT, "RIGHT", "R" }, // alias |
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48 | {ROARDSP_CHAN_CENTER, "CENTER", "C" }, // alias |
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49 | {ROARDSP_CHAN_MONO, "MONO", "M" }, // alias |
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50 | {ROARDSP_CHAN_MS_MID, "MS_MID", "MID" }, |
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51 | {ROARDSP_CHAN_MS_SIDE, "MS_SIDE", "SIDE" }, |
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52 | {ROARDSP_CHAN_LFE, "LFE", "LFE" }, |
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53 | // midi: |
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54 | {ROARDSP_CHAN_MIDI0, "MIDI0", NULL }, |
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55 | {ROARDSP_CHAN_MIDI1, "MIDI1", NULL }, |
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56 | {ROARDSP_CHAN_MIDI2, "MIDI2", NULL }, |
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57 | {ROARDSP_CHAN_MIDI3, "MIDI3", NULL }, |
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58 | {ROARDSP_CHAN_MIDI4, "MIDI4", NULL }, |
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59 | {ROARDSP_CHAN_MIDI5, "MIDI5", NULL }, |
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60 | {ROARDSP_CHAN_MIDI6, "MIDI6", NULL }, |
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61 | {ROARDSP_CHAN_MIDI7, "MIDI7", NULL }, |
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62 | {ROARDSP_CHAN_MIDI8, "MIDI8", NULL }, |
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63 | {ROARDSP_CHAN_MIDI9, "MIDI9", NULL }, |
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64 | {ROARDSP_CHAN_MIDI10, "MIDI10", NULL }, |
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65 | {ROARDSP_CHAN_MIDI11, "MIDI11", NULL }, |
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66 | {ROARDSP_CHAN_MIDI12, "MIDI12", NULL }, |
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67 | {ROARDSP_CHAN_MIDI13, "MIDI13", NULL }, |
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68 | {ROARDSP_CHAN_MIDI14, "MIDI14", NULL }, |
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69 | {ROARDSP_CHAN_MIDI15, "MIDI15", NULL }, |
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70 | {ROARDSP_CHAN_EOL, NULL, NULL} |
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71 | }; |
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72 | |
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73 | char * roardsp_chan2str (int chan) { |
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74 | int i; |
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75 | |
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76 | for (i = 0; _g_chans[i].id != ROARDSP_CHAN_EOL; i++) |
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77 | if ( _g_chans[i].id == chan ) |
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78 | return _g_chans[i].name; |
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79 | |
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80 | return NULL; |
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81 | } |
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82 | |
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83 | int roardsp_str2chan(char * str) { |
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84 | int i; |
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85 | |
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86 | for (i = 0; _g_chans[i].id != ROARDSP_CHAN_EOL; i++) |
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87 | if ( !strcasecmp(_g_chans[i].name, str) || |
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88 | (_g_chans[i].sn != NULL && !strcasecmp(_g_chans[i].sn, str)) ) |
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89 | return _g_chans[i].id; |
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90 | |
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91 | return -1; |
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92 | } |
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93 | |
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94 | int roardsp_chanlist2str(char * list, size_t len, char * str, size_t strlen) { |
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95 | size_t i; |
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96 | char * name; |
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97 | |
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98 | if ( list == NULL && len > 0 ) |
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99 | return -1; |
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100 | |
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101 | if ( (str == NULL || strlen == 0) && len > 0 ) |
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102 | return -1; |
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103 | |
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104 | if ( len == 0 ) { |
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105 | if ( str != NULL && strlen > 0 ) |
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106 | *str = 0; |
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107 | |
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108 | return 0; |
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109 | } |
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110 | |
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111 | *str = 0; |
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112 | |
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113 | for (i = 0; i < len; i++) { |
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114 | if ( i != 0 ) |
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115 | roar_mm_strlcat(str, ",", strlen); |
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116 | |
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117 | name = roardsp_chan2str(list[i]); |
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118 | |
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119 | if ( name == NULL ) { |
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120 | roar_mm_strlcat(str, "<<<INVALID>>>", strlen); |
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121 | } else { |
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122 | roar_mm_strlcat(str, name, strlen); |
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123 | } |
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124 | } |
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125 | |
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126 | return 0; |
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127 | } |
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128 | |
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129 | int roardsp_chanlist_init(char * list, int channels, int map) { |
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130 | int i; |
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131 | |
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132 | if ( channels == 0 ) |
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133 | return 0; |
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134 | |
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135 | if ( list == NULL ) |
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136 | return -1; |
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137 | |
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138 | if ( channels > ROAR_MAX_CHANNELS ) |
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139 | return -1; |
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140 | |
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141 | if ( map == ROARDSP_CHANLIST_MAP_MIDI ) { |
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142 | for (i = 0; i < channels; i++) { |
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143 | list[i] = i+ROARDSP_CHAN_MIDI0; |
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144 | } |
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145 | } |
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146 | |
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147 | // test for common maps: |
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148 | if ( channels == 1 ) { |
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149 | list[0] = ROARDSP_CHAN_MONO; |
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150 | return 0; |
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151 | } |
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152 | |
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153 | if ( channels == 2 ) { |
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154 | list[0] = ROARDSP_CHAN_LEFT; |
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155 | list[1] = ROARDSP_CHAN_RIGHT; |
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156 | return 0; |
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157 | } |
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158 | |
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159 | // test for specific maps: |
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160 | switch (map) { |
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161 | case ROARDSP_CHANLIST_MAP_ROARAUDIO: |
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162 | case ROARDSP_CHANLIST_MAP_FLAC: |
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163 | if ( map == ROARDSP_CHANLIST_MAP_FLAC && channels > 6 ) { |
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164 | // FLAC only has a fixed mapping for up to 6 channels. |
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165 | return -1; |
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166 | } |
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167 | |
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168 | switch (channels) { |
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169 | // FLAC or RoarAudio: |
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170 | case 3: |
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171 | list[0] = ROARDSP_CHAN_LEFT; |
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172 | list[1] = ROARDSP_CHAN_RIGHT; |
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173 | list[2] = ROARDSP_CHAN_CENTER; |
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174 | break; |
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175 | case 4: |
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176 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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177 | list[1] = ROARDSP_CHAN_FRONT_RIGHT; |
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178 | list[2] = ROARDSP_CHAN_BACK_LEFT; |
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179 | list[3] = ROARDSP_CHAN_BACK_RIGHT; |
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180 | break; |
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181 | case 5: |
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182 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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183 | list[1] = ROARDSP_CHAN_FRONT_RIGHT; |
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184 | list[2] = ROARDSP_CHAN_CENTER; |
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185 | list[3] = ROARDSP_CHAN_BACK_LEFT; |
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186 | list[4] = ROARDSP_CHAN_BACK_RIGHT; |
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187 | break; |
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188 | case 6: |
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189 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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190 | list[1] = ROARDSP_CHAN_FRONT_RIGHT; |
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191 | list[2] = ROARDSP_CHAN_CENTER; |
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192 | list[3] = ROARDSP_CHAN_LFE; |
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193 | list[4] = ROARDSP_CHAN_BACK_LEFT; |
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194 | list[5] = ROARDSP_CHAN_BACK_RIGHT; |
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195 | break; |
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196 | // RoarAudio: |
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197 | case 7: |
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198 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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199 | list[1] = ROARDSP_CHAN_FRONT_RIGHT; |
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200 | list[2] = ROARDSP_CHAN_CENTER; |
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201 | list[3] = ROARDSP_CHAN_LFE; |
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202 | list[4] = ROARDSP_CHAN_SIDE_LEFT; |
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203 | list[5] = ROARDSP_CHAN_SIDE_RIGHT; |
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204 | list[6] = ROARDSP_CHAN_BACK_CENTER; |
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205 | break; |
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206 | case 8: |
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207 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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208 | list[1] = ROARDSP_CHAN_FRONT_RIGHT; |
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209 | list[2] = ROARDSP_CHAN_CENTER; |
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210 | list[3] = ROARDSP_CHAN_LFE; |
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211 | list[4] = ROARDSP_CHAN_SIDE_LEFT; |
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212 | list[5] = ROARDSP_CHAN_SIDE_RIGHT; |
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213 | list[6] = ROARDSP_CHAN_BACK_LEFT; |
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214 | list[7] = ROARDSP_CHAN_BACK_RIGHT; |
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215 | break; |
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216 | default: |
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217 | return -1; |
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218 | break; |
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219 | } |
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220 | break; |
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221 | case ROARDSP_CHANLIST_MAP_VORBIS: |
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222 | switch (channels) { |
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223 | case 3: |
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224 | list[0] = ROARDSP_CHAN_LEFT; |
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225 | list[1] = ROARDSP_CHAN_CENTER; |
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226 | list[2] = ROARDSP_CHAN_RIGHT; |
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227 | break; |
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228 | case 4: |
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229 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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230 | list[1] = ROARDSP_CHAN_FRONT_RIGHT; |
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231 | list[2] = ROARDSP_CHAN_BACK_LEFT; |
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232 | list[3] = ROARDSP_CHAN_BACK_RIGHT; |
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233 | break; |
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234 | case 5: |
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235 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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236 | list[1] = ROARDSP_CHAN_CENTER; |
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237 | list[2] = ROARDSP_CHAN_FRONT_RIGHT; |
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238 | list[3] = ROARDSP_CHAN_BACK_LEFT; |
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239 | list[4] = ROARDSP_CHAN_BACK_RIGHT; |
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240 | break; |
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241 | case 6: |
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242 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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243 | list[1] = ROARDSP_CHAN_CENTER; |
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244 | list[2] = ROARDSP_CHAN_FRONT_RIGHT; |
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245 | list[3] = ROARDSP_CHAN_BACK_LEFT; |
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246 | list[4] = ROARDSP_CHAN_BACK_RIGHT; |
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247 | list[5] = ROARDSP_CHAN_LFE; |
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248 | break; |
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249 | case 7: |
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250 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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251 | list[1] = ROARDSP_CHAN_CENTER; |
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252 | list[2] = ROARDSP_CHAN_FRONT_RIGHT; |
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253 | list[3] = ROARDSP_CHAN_SIDE_LEFT; |
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254 | list[4] = ROARDSP_CHAN_SIDE_RIGHT; |
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255 | list[5] = ROARDSP_CHAN_BACK_CENTER; |
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256 | list[6] = ROARDSP_CHAN_LFE; |
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257 | break; |
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258 | case 8: |
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259 | list[0] = ROARDSP_CHAN_FRONT_LEFT; |
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260 | list[1] = ROARDSP_CHAN_CENTER; |
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261 | list[2] = ROARDSP_CHAN_FRONT_RIGHT; |
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262 | list[3] = ROARDSP_CHAN_SIDE_LEFT; |
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263 | list[4] = ROARDSP_CHAN_SIDE_RIGHT; |
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264 | list[5] = ROARDSP_CHAN_BACK_LEFT; |
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265 | list[6] = ROARDSP_CHAN_BACK_RIGHT; |
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266 | list[7] = ROARDSP_CHAN_LFE; |
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267 | break; |
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268 | default: |
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269 | return -1; |
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270 | break; |
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271 | } |
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272 | break; |
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273 | case ROARDSP_CHANLIST_MAP_OSS: |
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274 | switch (channels) { |
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275 | case 8: |
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276 | list[7] = ROARDSP_CHAN_BACK_RIGHT; |
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277 | case 7: |
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278 | list[6] = ROARDSP_CHAN_BACK_LEFT; |
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279 | case 6: |
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280 | list[5] = ROARDSP_CHAN_SIDE_RIGHT; |
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281 | case 5: |
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282 | list[4] = ROARDSP_CHAN_SIDE_LEFT; |
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283 | case 4: |
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284 | list[3] = ROARDSP_CHAN_LFE; |
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285 | case 3: |
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286 | list[2] = ROARDSP_CHAN_CENTER; |
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287 | list[1] = ROARDSP_CHAN_RIGHT; |
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288 | list[0] = ROARDSP_CHAN_LEFT; |
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289 | break; |
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290 | default: |
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291 | return -1; |
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292 | break; |
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293 | } |
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294 | break; |
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295 | case ROARDSP_CHANLIST_MAP_ALSA: |
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296 | // we guess: L,R,BL,BR,C,LFE,SL,SR (really, just guessing, see ALSA plugin of libao) |
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297 | switch (channels) { |
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298 | case 8: |
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299 | list[7] = ROARDSP_CHAN_BACK_RIGHT; |
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300 | case 7: |
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301 | list[6] = ROARDSP_CHAN_BACK_LEFT; |
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302 | case 6: |
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303 | list[5] = ROARDSP_CHAN_LFE; |
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304 | case 5: |
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305 | list[4] = ROARDSP_CHAN_CENTER; |
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306 | case 4: |
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307 | list[3] = ROARDSP_CHAN_BACK_RIGHT; |
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308 | case 3: |
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309 | list[2] = ROARDSP_CHAN_BACK_LEFT; |
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310 | list[1] = ROARDSP_CHAN_RIGHT; |
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311 | list[0] = ROARDSP_CHAN_LEFT; |
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312 | break; |
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313 | default: |
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314 | return -1; |
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315 | break; |
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316 | } |
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317 | break; |
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318 | case ROARDSP_CHANLIST_MAP_RIFF_WAVE: |
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319 | // here we are again, guessing: L,R,C,LFE,BL,BR,CL,CR,BC,SL,SR |
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320 | // strange, C, LFE on 4 channel file? |
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321 | // return -1 to be sure.... |
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322 | switch (channels) { |
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323 | default: |
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324 | return -1; |
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325 | break; |
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326 | } |
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327 | break; |
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328 | default: |
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329 | return -1; |
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330 | break; |
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331 | } |
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332 | |
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333 | return 0; |
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334 | } |
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335 | |
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336 | int roardsp_chanmap_calc(struct roardsp_chanmap * map, int what, int err_on_none) { |
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337 | int a, b; |
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338 | |
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339 | if ( map == NULL ) |
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340 | return -1; |
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341 | |
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342 | switch (what) { |
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343 | case ROARDSP_CHANMAP_MAP: |
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344 | memset(map->map, (char)-1, sizeof(map->map)); |
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345 | |
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346 | for (a = 0; a < ROAR_MAX_CHANNELS; a++) { |
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347 | if ( map->in[a] == ROARDSP_CHAN_NONE ) |
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348 | continue; |
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349 | |
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350 | for (b = 0; b < ROAR_MAX_CHANNELS; b++) { |
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351 | if ( map->in[a] == map->out[b] ) { |
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352 | map->map[a] = b; |
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353 | break; |
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354 | } |
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355 | } |
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356 | if ( b == ROAR_MAX_CHANNELS ) { // src not found in dest |
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357 | if ( err_on_none ) |
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358 | return -1; |
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359 | |
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360 | map->map[a] = -1; |
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361 | } |
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362 | } |
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363 | break; |
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364 | case ROARDSP_CHANMAP_INVMAP: |
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365 | memset(map->map, (char)-1, sizeof(map->map)); |
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366 | |
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367 | for (a = 0; a < ROAR_MAX_CHANNELS; a++) { |
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368 | if ( map->out[a] == ROARDSP_CHAN_NONE ) |
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369 | continue; |
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370 | |
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371 | for (b = 0; b < ROAR_MAX_CHANNELS; b++) { |
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372 | if ( map->out[a] == map->in[b] ) { |
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373 | map->map[a] = b; |
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374 | break; |
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375 | } |
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376 | } |
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377 | if ( b == ROAR_MAX_CHANNELS ) { // src not found in dest |
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378 | if ( err_on_none ) |
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379 | return -1; |
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380 | |
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381 | map->map[a] = -1; |
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382 | } |
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383 | } |
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384 | break; |
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385 | case ROARDSP_CHANMAP_IN: |
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386 | case ROARDSP_CHANMAP_OUT: |
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387 | default: |
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388 | return -1; |
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389 | break; |
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390 | } |
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391 | |
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392 | return 0; |
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393 | } |
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394 | |
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395 | int roardsp_chanmap_mappcm8 (char * out, char * in, size_t len, size_t chans, struct roardsp_chanmap * map) { |
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396 | char buf[ROAR_MAX_CHANNELS]; |
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397 | size_t frame; |
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398 | size_t c; |
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399 | |
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400 | if ( len == 0 ) |
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401 | return 0; |
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402 | |
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403 | if ( out == NULL || in == NULL || map == NULL ) |
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404 | return -1; |
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405 | |
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406 | if ( chans > ROAR_MAX_CHANNELS ) |
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407 | return -1; |
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408 | |
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409 | if ( in == out ) { |
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410 | for (frame = 0; frame < len/(chans*_8BIT); frame++) { |
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411 | memset(buf, 0, sizeof(buf)); |
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412 | |
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413 | for (c = 0; c < chans; c++) { |
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414 | buf[(int)map->map[c]] = in[c]; |
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415 | } |
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416 | |
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417 | memcpy(out, buf, chans*_8BIT); |
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418 | |
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419 | in += chans; |
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420 | out += chans; |
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421 | } |
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422 | } else { |
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423 | memset(out, 0, len); // silance channels we do not use |
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424 | for (frame = 0; frame < len/(chans*_8BIT); frame++) { |
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425 | for (c = 0; c < chans; c++) { |
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426 | out[(int)map->map[c]] = in[c]; |
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427 | } |
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428 | in += chans; |
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429 | out += chans; |
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430 | } |
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431 | } |
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432 | |
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433 | return 0; |
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434 | } |
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435 | |
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436 | int roardsp_chanmap_mappcm16(int16_t * out, int16_t * in, size_t len, size_t chans, struct roardsp_chanmap * map) { |
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437 | int16_t buf[ROAR_MAX_CHANNELS]; |
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438 | size_t frame; |
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439 | size_t c; |
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440 | |
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441 | if ( len == 0 ) |
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442 | return 0; |
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443 | |
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444 | if ( out == NULL || in == NULL || map == NULL ) |
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445 | return -1; |
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446 | |
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447 | if ( chans > ROAR_MAX_CHANNELS ) |
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448 | return -1; |
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449 | |
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450 | if ( in == out ) { |
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451 | for (frame = 0; frame < len/(chans*_16BIT); frame++) { |
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452 | memset(buf, 0, sizeof(buf)); |
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453 | |
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454 | for (c = 0; c < chans; c++) { |
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455 | buf[(int)map->map[c]] = in[c]; |
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456 | } |
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457 | |
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458 | memcpy(out, buf, chans*_16BIT); |
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459 | |
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460 | in += chans; |
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461 | out += chans; |
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462 | } |
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463 | } else { |
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464 | memset(out, 0, len); // silance channels we do not use |
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465 | for (frame = 0; frame < len/(chans*_16BIT); frame++) { |
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466 | for (c = 0; c < chans; c++) { |
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467 | out[(int)map->map[c]] = in[c]; |
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468 | } |
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469 | in += chans; |
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470 | out += chans; |
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471 | } |
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472 | } |
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473 | |
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474 | return 0; |
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475 | } |
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476 | |
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477 | int roardsp_chanmap_mappcm24(void * out, void * in, size_t len, size_t chans, struct roardsp_chanmap * map) { |
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478 | return -1; |
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479 | } |
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480 | |
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481 | int roardsp_chanmap_mappcm32(int32_t * out, int32_t * in, size_t len, size_t chans, struct roardsp_chanmap * map) { |
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482 | int32_t buf[ROAR_MAX_CHANNELS]; |
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483 | size_t frame; |
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484 | size_t c; |
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485 | |
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486 | if ( len == 0 ) |
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487 | return 0; |
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488 | |
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489 | if ( out == NULL || in == NULL || map == NULL ) |
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490 | return -1; |
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491 | |
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492 | if ( chans > ROAR_MAX_CHANNELS ) |
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493 | return -1; |
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494 | |
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495 | if ( in == out ) { |
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496 | for (frame = 0; frame < len/(chans*_32BIT); frame++) { |
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497 | memset(buf, 0, sizeof(buf)); |
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498 | |
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499 | for (c = 0; c < chans; c++) { |
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500 | buf[(int)map->map[c]] = in[c]; |
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501 | } |
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502 | |
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503 | memcpy(out, buf, chans*_32BIT); |
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504 | |
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505 | in += chans; |
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506 | out += chans; |
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507 | } |
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508 | } else { |
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509 | memset(out, 0, len); // silance channels we do not use |
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510 | for (frame = 0; frame < len/(chans*_32BIT); frame++) { |
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511 | for (c = 0; c < chans; c++) { |
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512 | out[(int)map->map[c]] = in[c]; |
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513 | } |
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514 | in += chans; |
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515 | out += chans; |
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516 | } |
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517 | } |
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518 | |
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519 | return 0; |
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520 | } |
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521 | |
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522 | int roardsp_chanmap_mappcm (void * out, void * in, size_t len, size_t chans, struct roardsp_chanmap * map, int bits) { |
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523 | if ( len == 0 ) |
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524 | return 0; |
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525 | |
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526 | if ( out == NULL || in == NULL || map == NULL ) |
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527 | return -1; |
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528 | |
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529 | if ( chans > ROAR_MAX_CHANNELS ) |
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530 | return -1; |
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531 | |
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532 | #if 0 |
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533 | { int i; |
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534 | printf("---- BEGIN MAP ----\n"); |
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535 | for (i = 0; i < chans; i++) { |
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536 | printf("MAP: %i->%i\n", i, map[i]); |
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537 | } |
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538 | printf("---- END MAP ----\n"); |
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539 | } |
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540 | #endif |
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541 | |
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542 | switch (bits) { |
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543 | case 8: return roardsp_chanmap_mappcm8(out, in, len, chans, map); break; |
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544 | case 16: return roardsp_chanmap_mappcm16(out, in, len, chans, map); break; |
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545 | case 24: return roardsp_chanmap_mappcm24(out, in, len, chans, map); break; |
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546 | case 32: return roardsp_chanmap_mappcm32(out, in, len, chans, map); break; |
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547 | default: |
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548 | return -1; |
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549 | break; |
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550 | } |
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551 | } |
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552 | |
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553 | //ll |
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