1 | //codecfilter_celt.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2013 |
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5 | * |
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6 | * This file is part of roard 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 | * RoarAudio 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 "roard.h" |
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27 | #ifdef ROAR_HAVE_LIBCELT |
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28 | |
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29 | #ifdef ROAR_HAVE_CELT_VERSION_0_7_1 |
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30 | typedef celt_int16 celt_int16_t; |
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31 | #endif |
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32 | |
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33 | int cf_celt_open(CODECFILTER_USERDATA_T * inst, int codec, |
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34 | struct roar_stream_server * info, |
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35 | struct roar_codecfilter * filter) { |
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36 | struct codecfilter_celt_inst * self = roar_mm_malloc(sizeof(struct codecfilter_celt_inst)); |
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37 | struct roar_stream * s = ROAR_STREAM(info); |
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38 | |
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39 | (void)codec, (void)filter; |
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40 | |
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41 | if ( self == NULL ) |
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42 | return -1; |
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43 | |
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44 | /* |
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45 | CELTMode * mode; |
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46 | CELTEncoder * encoder; |
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47 | CELTDecoder * decoder; |
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48 | int frame_size; |
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49 | int lookahead; |
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50 | int out_size; |
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51 | char * ibuf; |
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52 | char * obuf; |
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53 | char * rest; |
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54 | int s_buf; |
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55 | int f_rest; /-* how much is in rest? *-/ |
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56 | */ |
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57 | |
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58 | self->stream = info; |
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59 | self->frame_size = 256; |
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60 | self->lookahead = self->frame_size; |
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61 | self->encoder = NULL; |
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62 | self->decoder = NULL; |
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63 | self->opened_encoder = 0; |
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64 | self->opened_decoder = 0; |
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65 | self->s_buf = s->info.channels * self->frame_size * 2; |
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66 | self->ibuf = roar_mm_malloc(self->s_buf); |
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67 | self->obuf = roar_mm_malloc(self->s_buf); |
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68 | self->i_rest = roar_mm_malloc(self->s_buf); |
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69 | self->o_rest = roar_mm_malloc(self->s_buf); |
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70 | self->fi_rest = 0; |
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71 | self->fo_rest = 0; |
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72 | |
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73 | if ( !(self->ibuf && self->obuf && self->i_rest && self->o_rest) ) { |
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74 | if ( self->ibuf != NULL ) |
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75 | roar_mm_free(self->ibuf); |
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76 | |
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77 | if ( self->obuf != NULL ) |
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78 | roar_mm_free(self->obuf); |
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79 | |
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80 | if ( self->i_rest != NULL ) |
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81 | roar_mm_free(self->o_rest); |
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82 | |
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83 | if ( self->o_rest != NULL ) |
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84 | roar_mm_free(self->o_rest); |
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85 | |
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86 | roar_mm_free(self); |
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87 | return -1; |
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88 | } |
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89 | |
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90 | #ifdef ROAR_HAVE_CELT_VERSION_0_7_1 |
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91 | self->mode = celt_mode_create(s->info.rate, self->frame_size, NULL); |
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92 | #else |
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93 | self->mode = celt_mode_create(s->info.rate, s->info.channels, self->frame_size, NULL); |
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94 | #endif |
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95 | |
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96 | if ( !self->mode ) { |
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97 | roar_mm_free(self); |
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98 | return -1; |
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99 | } |
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100 | |
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101 | if ( s->dir == ROAR_DIR_PLAY ) { |
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102 | #ifdef ROAR_HAVE_CELT_VERSION_0_7_1 |
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103 | self->decoder = celt_decoder_create(self->mode, s->info.channels, NULL); |
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104 | #else |
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105 | self->decoder = celt_decoder_create(self->mode); |
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106 | #endif |
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107 | } else if ( s->dir == ROAR_DIR_MONITOR || s->dir == ROAR_DIR_OUTPUT ) { |
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108 | #ifdef ROAR_HAVE_CELT_VERSION_0_7_1 |
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109 | self->encoder = celt_encoder_create(self->mode, s->info.channels, NULL); |
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110 | #else |
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111 | self->encoder = celt_encoder_create(self->mode); |
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112 | #endif |
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113 | } else if ( s->dir == ROAR_DIR_BIDIR || s->dir == ROAR_DIR_RECPLAY ) { |
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114 | #ifdef ROAR_HAVE_CELT_VERSION_0_7_1 |
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115 | self->decoder = celt_decoder_create(self->mode, s->info.channels, NULL); |
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116 | self->encoder = celt_encoder_create(self->mode, s->info.channels, NULL); |
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117 | #else |
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118 | self->decoder = celt_decoder_create(self->mode); |
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119 | self->encoder = celt_encoder_create(self->mode); |
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120 | #endif |
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121 | } else { |
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122 | celt_mode_destroy(self->mode); |
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123 | roar_mm_free(self); |
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124 | return -1; |
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125 | } |
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126 | |
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127 | *inst = (CODECFILTER_USERDATA_T) self; |
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128 | |
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129 | s->info.codec = ROAR_CODEC_DEFAULT; |
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130 | s->info.bits = 16; // CELT hardcoded |
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131 | |
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132 | return 0; |
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133 | } |
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134 | |
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135 | int cf_celt_close(CODECFILTER_USERDATA_T inst) { |
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136 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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137 | |
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138 | if ( !inst ) |
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139 | return -1; |
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140 | |
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141 | if ( self->encoder != NULL ) |
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142 | celt_encoder_destroy(self->encoder); |
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143 | |
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144 | if ( self->decoder != NULL ) |
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145 | celt_decoder_destroy(self->decoder); |
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146 | |
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147 | if ( self->mode != NULL ) |
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148 | celt_mode_destroy(self->mode); |
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149 | |
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150 | if ( self->ibuf != NULL ) |
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151 | roar_mm_free(self->ibuf); |
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152 | |
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153 | if ( self->obuf != NULL ) |
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154 | roar_mm_free(self->obuf); |
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155 | |
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156 | if ( self->i_rest != NULL ) |
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157 | roar_mm_free(self->i_rest); |
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158 | |
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159 | if ( self->o_rest != NULL ) |
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160 | roar_mm_free(self->o_rest); |
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161 | |
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162 | roar_mm_free(inst); |
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163 | return 0; |
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164 | } |
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165 | |
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166 | int cf_celt_read(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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167 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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168 | int r = 0; |
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169 | uint16_t fs; |
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170 | char * cbuf; |
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171 | char magic[ROAR_CELT_MAGIC_LEN]; |
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172 | |
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173 | // printf("buf=%p, len=%i\n", buf, len); |
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174 | |
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175 | if ( !self->opened_decoder ) { |
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176 | errno = ENOSYS; |
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177 | if ( stream_vio_s_read(self->stream, magic, ROAR_CELT_MAGIC_LEN) != ROAR_CELT_MAGIC_LEN ) |
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178 | return -1; |
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179 | if ( memcmp(magic, ROAR_CELT_MAGIC, ROAR_CELT_MAGIC_LEN) != 0 ) |
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180 | return -1; |
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181 | |
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182 | errno = 0; |
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183 | self->opened_decoder = 1; |
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184 | } |
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185 | |
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186 | if ( self->fi_rest ) { |
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187 | memcpy(buf, self->i_rest, self->fi_rest); |
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188 | r += self->fi_rest; |
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189 | self->fi_rest = 0; |
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190 | } |
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191 | |
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192 | while ( r <= (len - self->s_buf) ) { |
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193 | if ( stream_vio_s_read(self->stream, &fs, 2) != 2 ) |
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194 | break; |
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195 | |
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196 | fs = ROAR_NET2HOST16(fs); |
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197 | |
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198 | // ROAR_WARN("0:fs=%i", fs); |
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199 | |
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200 | if ( fs > self->s_buf ) |
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201 | return -1; |
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202 | |
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203 | if ( stream_vio_s_read(self->stream, self->ibuf, fs) != fs ) |
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204 | return -1; |
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205 | |
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206 | cbuf = buf + r; |
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207 | |
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208 | // printf("buf=%p, r=%i // cbuf=%p\n", buf, r, cbuf); |
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209 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) cbuf) < 0 ) |
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210 | return -1; |
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211 | |
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212 | r += self->s_buf; |
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213 | } |
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214 | |
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215 | if ( r < len ) { |
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216 | // printf("r < len!\n"); |
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217 | if ( stream_vio_s_read(self->stream, &fs, 2) == 2 ) { |
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218 | fs = ROAR_NET2HOST16(fs); |
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219 | // ROAR_WARN("1:fs=%i", fs); |
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220 | // printf("next: fs=%i\n", fs); |
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221 | if ( fs > self->s_buf ) |
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222 | return -1; |
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223 | if ( stream_vio_s_read(self->stream, self->ibuf, fs) == fs ) { |
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224 | // printf("got data!\n"); |
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225 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) self->obuf) >= 0 ) { |
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226 | // printf("{ // decode rest\n"); |
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227 | // printf(" r=%i // need %i Bytes\n", r, len - r); |
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228 | // printf(" memcpy(buf+%i, self->obuf, %i) = ?\n", r, len - r); |
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229 | memcpy(buf+r, self->obuf, len - r); |
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230 | self->fi_rest = self->s_buf + r - len; |
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231 | memcpy(self->i_rest, self->obuf + len - r, self->fi_rest); |
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232 | // printf(" len=%i, r=%i, fi_rest=%i, s_buf=%i\n", len, r, self->fi_rest, self->s_buf); |
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233 | r = len; |
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234 | // printf("}\n"); |
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235 | } |
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236 | } |
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237 | } |
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238 | } |
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239 | |
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240 | ROAR_DBG("cf_celt_read(inst=%p, buf=%p, len=%i) = %i", inst, buf, len, r); |
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241 | return r; |
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242 | } |
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243 | |
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244 | #define BS (ROAR_STREAM(self->stream)->info.channels * 32) |
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245 | int cf_celt_write(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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246 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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247 | int have = 0; |
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248 | int org_len = len; |
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249 | int diff; |
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250 | int fs2 = self->frame_size * 2 * ROAR_STREAM(self->stream)->info.channels; |
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251 | int sid; |
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252 | uint16_t pkglen_net, pkglen; |
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253 | unsigned char cbits[BS+2]; |
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254 | void * prethru; |
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255 | |
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256 | if ( !self->opened_encoder ) { |
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257 | sid = ROAR_STREAM(self->stream)->id; |
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258 | |
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259 | if ( stream_prethru_destroy(sid) == -1 ) { |
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260 | return -1; |
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261 | } |
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262 | |
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263 | if ( stream_prethru_add_data(sid, &prethru, ROAR_CELT_MAGIC_LEN) == -1 ) { |
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264 | return -1; |
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265 | } |
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266 | |
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267 | memcpy(prethru, ROAR_CELT_MAGIC, ROAR_CELT_MAGIC_LEN); |
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268 | |
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269 | if ( stream_vio_s_write(self->stream, ROAR_CELT_MAGIC, ROAR_CELT_MAGIC_LEN) != ROAR_CELT_MAGIC_LEN ) |
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270 | return -1; |
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271 | self->opened_encoder = 1; |
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272 | } |
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273 | |
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274 | if ( (self->fo_rest + len) > fs2 ) { |
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275 | if ( self->fo_rest ) { |
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276 | memcpy(self->obuf, self->o_rest, self->fo_rest); |
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277 | have = self->fo_rest; |
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278 | self->fo_rest = 0; |
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279 | } |
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280 | |
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281 | memcpy(self->obuf+have, buf, (diff=fs2-have)); |
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282 | buf += diff; |
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283 | len -= diff; |
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284 | |
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285 | pkglen = celt_encode(self->encoder, (celt_int16_t *) self->obuf, NULL, cbits+2, BS); |
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286 | pkglen_net = ROAR_HOST2NET16(pkglen); |
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287 | *(uint16_t*)cbits = pkglen_net; |
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288 | |
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289 | if ( stream_vio_s_write(self->stream, cbits, pkglen+2) == -1 ) |
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290 | return -1; |
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291 | |
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292 | while (len >= fs2) { |
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293 | pkglen = celt_encode(self->encoder, (celt_int16_t *) buf, NULL, cbits+2, BS); |
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294 | pkglen_net = ROAR_HOST2NET16(pkglen); |
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295 | *(uint16_t*)cbits = pkglen_net; |
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296 | |
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297 | if ( stream_vio_s_write(self->stream, cbits, pkglen+2) == -1 ) |
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298 | return -1; |
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299 | len -= fs2; |
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300 | buf += fs2; |
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301 | } |
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302 | } |
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303 | |
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304 | if ( len ) { |
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305 | memcpy(self->o_rest + self->fo_rest, buf, len); |
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306 | self->fo_rest += len; |
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307 | len = 0; |
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308 | } |
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309 | |
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310 | return org_len; |
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311 | } |
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312 | |
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313 | int cf_celt_delay(CODECFILTER_USERDATA_T inst, uint_least32_t * delay) { |
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314 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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315 | |
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316 | ROAR_DBG("cf_celt_delay(*) = ?"); |
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317 | |
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318 | if ( self == NULL ) { |
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319 | *delay = (1000000 * 256) / ROAR_RATE_DEFAULT; |
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320 | return 0; |
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321 | } else { |
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322 | *delay = (1000000 * self->frame_size) / ROAR_STREAM(self->stream)->info.rate; |
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323 | ROAR_DBG("cf_celt_delay(*): frame_size=%i, rate=%i, *delay=%i", |
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324 | self->frame_size, ROAR_STREAM(self->stream)->info.rate, *delay); |
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325 | return 0; |
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326 | } |
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327 | |
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328 | return -1; |
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329 | } |
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330 | |
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331 | #endif |
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332 | //ll |
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