1 | //codecfilter_speex.c: |
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2 | |
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3 | #include "roard.h" |
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4 | #ifdef ROAR_HAVE_LIBSPEEX |
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5 | |
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6 | int cf_speex_open(CODECFILTER_USERDATA_T * inst, int codec, |
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7 | struct roar_stream_server * info, |
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8 | struct roar_codecfilter * filter) { |
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9 | struct codecfilter_speex_inst * self = malloc(sizeof(struct codecfilter_speex_inst)); |
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10 | struct roar_stream * s = (struct roar_stream *) info; |
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11 | |
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12 | *inst = NULL; |
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13 | |
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14 | if (!self) |
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15 | return -1; |
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16 | |
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17 | self->encoder = NULL; |
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18 | self->decoder = NULL; |
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19 | |
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20 | self->stream = info; |
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21 | |
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22 | self->cd = NULL; |
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23 | |
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24 | self->i_rest = NULL; |
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25 | self->fi_rest = 0; |
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26 | |
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27 | speex_bits_init(&(self->bits)); |
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28 | |
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29 | s->info.codec = ROAR_CODEC_DEFAULT; |
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30 | s->info.bits = 16; // speex hardcoded |
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31 | s->info.channels = 1; // only mono support at the moment |
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32 | |
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33 | *inst = (void*) self; |
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34 | |
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35 | return 0; |
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36 | } |
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37 | |
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38 | int cf_speex_close(CODECFILTER_USERDATA_T inst) { |
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39 | struct codecfilter_speex_inst * self = (struct codecfilter_speex_inst *) inst; |
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40 | |
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41 | if (!self) |
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42 | return -1; |
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43 | |
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44 | if ( self->encoder ) |
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45 | speex_encoder_destroy(self->decoder); |
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46 | |
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47 | self->encoder = NULL; |
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48 | |
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49 | if ( self->decoder ) |
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50 | speex_decoder_destroy(self->decoder); |
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51 | |
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52 | self->decoder = NULL; |
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53 | |
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54 | speex_bits_destroy(&(self->bits)); |
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55 | |
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56 | if ( self->cd ) |
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57 | free(self->cd); |
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58 | |
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59 | if ( self->i_rest ) |
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60 | free(self->i_rest); |
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61 | |
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62 | free((void*)self); |
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63 | |
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64 | return 0; |
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65 | } |
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66 | |
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67 | int cf_speex_read(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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68 | struct codecfilter_speex_inst * self = (struct codecfilter_speex_inst *) inst; |
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69 | struct roar_stream * s = (struct roar_stream *) self->stream; |
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70 | int mode; |
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71 | uint16_t ui; |
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72 | int tmp; |
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73 | int still_todo = len / 2 /* 16 bit */; |
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74 | int ret = 0; |
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75 | |
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76 | ROAR_WARN("cf_speex_read(inst=%p, buf=%p, len=%i) = ?", inst, buf, len); |
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77 | |
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78 | if ( ! self->decoder ) { |
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79 | ROAR_DBG("cf_speex_read(*): no decoder, starting one!"); |
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80 | if ( read(s->fh, &ui, 2) != 2 ) |
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81 | return 0; |
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82 | |
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83 | mode = ntohs(ui); |
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84 | |
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85 | if ( mode == ROAR_SPEEX_MODE_NB ) { |
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86 | self->decoder = speex_decoder_init(&speex_nb_mode); |
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87 | } else if ( mode == ROAR_SPEEX_MODE_WB ) { |
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88 | self->decoder = speex_decoder_init(&speex_wb_mode); |
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89 | } else if ( mode == ROAR_SPEEX_MODE_UWB ) { |
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90 | self->decoder = speex_decoder_init(&speex_uwb_mode); |
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91 | } else { |
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92 | return 0; |
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93 | } |
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94 | |
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95 | tmp=1; |
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96 | speex_decoder_ctl(self->decoder, SPEEX_SET_ENH, &tmp); |
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97 | |
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98 | speex_decoder_ctl(self->decoder, SPEEX_GET_FRAME_SIZE, &(self->frame_size)); |
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99 | |
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100 | |
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101 | |
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102 | ROAR_WARN("cf_speex_read(*): frame_size=%i (%i bytes)", self->frame_size, self->frame_size*2); |
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103 | |
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104 | if ( !self->cd ) { |
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105 | self->cd = malloc((self->frame_size)*2); |
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106 | if ( !self->cd ) |
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107 | return 0; |
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108 | } |
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109 | |
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110 | if ( !self->i_rest ) { |
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111 | self->i_rest = malloc((self->frame_size)*2); |
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112 | if ( !self->i_rest ) |
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113 | return 0; |
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114 | } |
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115 | } |
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116 | |
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117 | ROAR_DBG("cf_speex_read(*): Have a working decoder!"); |
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118 | |
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119 | ROAR_DBG("cf_speex_read(*): frame_size=%i (%i bytes)", self->frame_size, self->frame_size*2); |
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120 | ROAR_DBG("cf_speex_read(*): i_rest is %i bytes after cd", ((void*)self->i_rest - (void*)self->cd)); |
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121 | |
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122 | |
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123 | if ( self->fi_rest ) { |
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124 | if ( self->fi_rest > (still_todo*2) ) { |
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125 | ROAR_WARN("cf_speex_read(*): discarding input rest data: buffer too long!"); |
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126 | self->fi_rest = 0; |
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127 | } else { |
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128 | ROAR_WARN("cf_speex_read(*): using data from input rest buffer: len=%i", self->fi_rest); |
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129 | memcpy(buf, self->i_rest, self->fi_rest); |
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130 | buf += self->fi_rest; |
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131 | still_todo -= self->fi_rest/2; |
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132 | ret += self->fi_rest; |
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133 | self->fi_rest = 0; |
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134 | } |
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135 | } |
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136 | |
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137 | while (still_todo) { |
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138 | ROAR_WARN("cf_speex_read(*): we sill need %i frames", still_todo); |
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139 | if ( read(s->fh, &ui, 2) != 2 ) |
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140 | return -1; |
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141 | |
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142 | ui = ntohs(ui); |
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143 | |
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144 | if ( ui > ROAR_SPEEX_MAX_CC ) |
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145 | return 0; |
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146 | |
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147 | if ( read(s->fh, self->cc, ui) != ui ) |
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148 | break; |
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149 | |
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150 | speex_bits_read_from(&(self->bits), self->cc, ui); |
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151 | |
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152 | speex_decode_int(self->decoder, &(self->bits), self->cd); |
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153 | |
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154 | if ( self->frame_size > still_todo ) { |
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155 | memcpy(buf, self->cd, still_todo*2); |
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156 | ret += still_todo*2; |
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157 | self->fi_rest = (self->frame_size - still_todo)*2; |
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158 | ROAR_WARN("cf_speex_read(*): self->fi_rest=%i, off=%i", self->fi_rest, still_todo*2); |
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159 | memcpy(self->i_rest, (self->cd)+(still_todo*2), self->fi_rest); |
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160 | still_todo = 0; |
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161 | } else { |
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162 | memcpy(buf, self->cd, self->frame_size*2); |
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163 | buf += self->frame_size*2; |
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164 | ret += self->frame_size*2; |
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165 | still_todo -= self->frame_size; |
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166 | } |
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167 | } |
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168 | |
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169 | if ( still_todo ) { |
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170 | ROAR_WARN("cf_speex_read(*): could not read all reqquested data, returning %i byte less", still_todo*2); |
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171 | } |
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172 | |
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173 | ROAR_WARN("cf_speex_read(*) = %i", ret); |
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174 | |
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175 | return ret; |
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176 | } |
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177 | |
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178 | int cf_speex_write(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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179 | struct codecfilter_speex_inst * self = (struct codecfilter_speex_inst *) inst; |
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180 | |
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181 | return -1; |
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182 | } |
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183 | |
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184 | #endif |
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185 | |
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186 | //ll |
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