1 | //codecfilter_celt.c: |
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2 | |
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3 | #include "roard.h" |
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4 | |
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5 | int cf_celt_open(CODECFILTER_USERDATA_T * inst, int codec, |
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6 | struct roar_stream_server * info, |
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7 | struct roar_codecfilter * filter) { |
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8 | struct codecfilter_celt_inst * self = malloc(sizeof(struct codecfilter_celt_inst)); |
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9 | struct roar_stream * s = (struct roar_stream *) info; |
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10 | |
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11 | if ( !self ) |
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12 | return -1; |
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13 | |
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14 | /* |
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15 | CELTMode * mode; |
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16 | CELTEncoder * encoder; |
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17 | CELTDecoder * decoder; |
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18 | int frame_size; |
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19 | int lookahead; |
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20 | int out_size; |
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21 | char * ibuf; |
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22 | char * obuf; |
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23 | char * rest; |
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24 | int s_buf; |
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25 | int f_rest; /-* how much is in rest? *-/ |
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26 | */ |
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27 | |
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28 | self->stream = info; |
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29 | self->frame_size = 256; |
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30 | self->lookahead = self->frame_size; |
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31 | self->encoder = NULL; |
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32 | self->decoder = NULL; |
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33 | self->s_buf = s->info.channels * self->frame_size * 2; |
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34 | self->ibuf = malloc(self->s_buf); |
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35 | self->obuf = malloc(self->s_buf); |
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36 | self->i_rest = malloc(self->s_buf); |
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37 | self->o_rest = malloc(self->s_buf); |
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38 | self->fi_rest = 0; |
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39 | self->fo_rest = 0; |
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40 | |
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41 | if ( !(self->ibuf && self->obuf && self->i_rest && self->o_rest) ) { |
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42 | if ( self->ibuf ) |
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43 | free(self->ibuf); |
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44 | |
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45 | if ( self->obuf ) |
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46 | free(self->obuf); |
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47 | |
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48 | if ( self->i_rest ) |
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49 | free(self->o_rest); |
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50 | |
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51 | if ( self->o_rest ) |
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52 | free(self->o_rest); |
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53 | |
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54 | free(self); |
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55 | return -1; |
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56 | } |
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57 | |
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58 | self->mode = celt_mode_create(s->info.rate, s->info.channels, self->frame_size, NULL); |
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59 | |
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60 | if ( !self->mode ) { |
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61 | free(self); |
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62 | return -1; |
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63 | } |
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64 | |
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65 | if ( s->dir == ROAR_DIR_PLAY ) { |
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66 | self->decoder = celt_decoder_create(self->mode); |
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67 | } else if ( s->dir == ROAR_DIR_MONITOR ) { |
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68 | self->encoder = celt_encoder_create(self->mode); |
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69 | } else { |
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70 | celt_mode_destroy(self->mode); |
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71 | free(self); |
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72 | return -1; |
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73 | } |
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74 | |
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75 | *inst = (CODECFILTER_USERDATA_T) self; |
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76 | |
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77 | s->info.codec = ROAR_CODEC_DEFAULT; |
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78 | s->info.bits = 16; // CELT hardcoded |
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79 | |
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80 | return 0; |
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81 | } |
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82 | |
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83 | int cf_celt_close(CODECFILTER_USERDATA_T inst) { |
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84 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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85 | |
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86 | if ( !inst ) |
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87 | return -1; |
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88 | |
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89 | if ( self->encoder ) |
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90 | celt_encoder_destroy(self->encoder); |
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91 | |
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92 | if ( self->decoder ) |
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93 | celt_decoder_destroy(self->decoder); |
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94 | |
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95 | if ( self->mode ) |
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96 | celt_mode_destroy(self->mode); |
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97 | |
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98 | if ( self->ibuf ) |
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99 | free(self->ibuf); |
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100 | |
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101 | if ( self->obuf ) |
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102 | free(self->obuf); |
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103 | |
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104 | if ( self->i_rest ) |
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105 | free(self->i_rest); |
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106 | |
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107 | if ( self->o_rest ) |
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108 | free(self->o_rest); |
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109 | |
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110 | free(inst); |
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111 | return 0; |
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112 | } |
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113 | |
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114 | int cf_celt_read(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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115 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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116 | int fh = ((struct roar_stream *)self->stream)->fh; |
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117 | int r = 0; |
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118 | uint16_t fs; |
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119 | char * cbuf; |
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120 | |
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121 | // printf("buf=%p, len=%i\n", buf, len); |
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122 | |
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123 | if ( self->fi_rest ) { |
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124 | memcpy(buf, self->i_rest, self->fi_rest); |
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125 | r += self->fi_rest; |
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126 | self->fi_rest = 0; |
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127 | } |
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128 | |
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129 | while ( r <= (len - self->s_buf) ) { |
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130 | if ( read(fh, &fs, 2) != 2 ) |
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131 | break; |
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132 | |
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133 | fs = ROAR_NET2HOST16(fs); |
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134 | |
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135 | if ( read(fh, self->ibuf, fs) != fs ) |
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136 | break; |
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137 | |
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138 | cbuf = buf + r; |
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139 | |
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140 | // printf("buf=%p, r=%i // cbuf=%p\n", buf, r, cbuf); |
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141 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) cbuf) < 0 ) |
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142 | break; |
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143 | |
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144 | r += self->s_buf; |
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145 | } |
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146 | |
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147 | if ( r < len ) { |
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148 | // printf("r < len!\n"); |
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149 | if ( read(fh, &fs, 2) == 2 ) { |
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150 | fs = ROAR_NET2HOST16(fs); |
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151 | // printf("next: fs=%i\n", fs); |
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152 | if ( read(fh, self->ibuf, fs) == fs ) { |
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153 | // printf("got data!\n"); |
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154 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) self->obuf) >= 0 ) { |
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155 | // printf("{ // decode rest\n"); |
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156 | // printf(" r=%i // need %i Bytes\n", r, len - r); |
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157 | // printf(" memcpy(buf+%i, self->obuf, %i) = ?\n", r, len - r); |
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158 | memcpy(buf+r, self->obuf, len - r); |
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159 | self->fi_rest = self->s_buf + r - len; |
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160 | memcpy(self->i_rest, self->obuf + len - r, self->fi_rest); |
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161 | // printf(" len=%i, r=%i, fi_rest=%i, s_buf=%i\n", len, r, self->fi_rest, self->s_buf); |
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162 | r = len; |
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163 | // printf("}\n"); |
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164 | } |
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165 | } |
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166 | } |
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167 | } |
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168 | |
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169 | ROAR_DBG("cf_celt_read(inst=%p, buf=%p, len=%i) = %i", inst, buf, len, r); |
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170 | return r; |
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171 | } |
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172 | |
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173 | int cf_celt_write(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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174 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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175 | |
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176 | return 0; |
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177 | } |
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178 | |
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179 | //ll |
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