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2 |
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5 |
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6 | import { Object3D } from '../core/Object3D.js';
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7 |
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8 | function Audio( listener ) {
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9 |
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10 | Object3D.call( this );
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11 |
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12 | this.type = 'Audio';
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13 |
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14 | this.context = listener.context;
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15 |
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16 | this.gain = this.context.createGain();
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17 | this.gain.connect( listener.getInput() );
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18 |
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19 | this.autoplay = false;
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20 |
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21 | this.buffer = null;
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22 | this.loop = false;
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23 | this.startTime = 0;
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24 | this.offset = 0;
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25 | this.playbackRate = 1;
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26 | this.isPlaying = false;
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27 | this.hasPlaybackControl = true;
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28 | this.sourceType = 'empty';
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29 |
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30 | this.filters = [];
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31 |
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32 | }
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33 |
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34 | Audio.prototype = Object.assign( Object.create( Object3D.prototype ), {
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35 |
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36 | constructor: Audio,
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37 |
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38 | getOutput: function () {
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39 |
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40 | return this.gain;
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41 |
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42 | },
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43 |
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44 | setNodeSource: function ( audioNode ) {
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45 |
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46 | this.hasPlaybackControl = false;
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47 | this.sourceType = 'audioNode';
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48 | this.source = audioNode;
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49 | this.connect();
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50 |
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51 | return this;
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52 |
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53 | },
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54 |
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55 | setBuffer: function ( audioBuffer ) {
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56 |
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57 | this.buffer = audioBuffer;
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58 | this.sourceType = 'buffer';
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59 |
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60 | if ( this.autoplay ) this.play();
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61 |
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62 | return this;
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63 |
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64 | },
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65 |
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66 | play: function () {
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67 |
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68 | if ( this.isPlaying === true ) {
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69 |
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70 | console.warn( 'THREE.Audio: Audio is already playing.' );
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71 | return;
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72 |
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73 | }
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74 |
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75 | if ( this.hasPlaybackControl === false ) {
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76 |
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77 | console.warn( 'THREE.Audio: this Audio has no playback control.' );
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78 | return;
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79 |
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80 | }
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81 |
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82 | var source = this.context.createBufferSource();
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83 |
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84 | source.buffer = this.buffer;
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85 | source.loop = this.loop;
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86 | source.onended = this.onEnded.bind( this );
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87 | source.playbackRate.setValueAtTime( this.playbackRate, this.startTime );
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88 | this.startTime = this.context.currentTime;
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89 | source.start( this.startTime, this.offset );
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90 |
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91 | this.isPlaying = true;
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92 |
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93 | this.source = source;
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94 |
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95 | return this.connect();
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96 |
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97 | },
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98 |
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99 | pause: function () {
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100 |
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101 | if ( this.hasPlaybackControl === false ) {
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102 |
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103 | console.warn( 'THREE.Audio: this Audio has no playback control.' );
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104 | return;
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105 |
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106 | }
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107 |
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108 | if ( this.isPlaying === true ) {
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109 |
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110 | this.source.stop();
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111 | this.offset += ( this.context.currentTime - this.startTime ) * this.playbackRate;
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112 | this.isPlaying = false;
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113 |
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114 | }
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115 |
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116 | return this;
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117 |
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118 | },
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119 |
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120 | stop: function () {
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121 |
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122 | if ( this.hasPlaybackControl === false ) {
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123 |
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124 | console.warn( 'THREE.Audio: this Audio has no playback control.' );
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125 | return;
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126 |
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127 | }
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128 |
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129 | this.source.stop();
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130 | this.offset = 0;
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131 | this.isPlaying = false;
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132 |
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133 | return this;
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134 |
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135 | },
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136 |
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137 | connect: function () {
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138 |
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139 | if ( this.filters.length > 0 ) {
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140 |
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141 | this.source.connect( this.filters[ 0 ] );
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142 |
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143 | for ( var i = 1, l = this.filters.length; i < l; i ++ ) {
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144 |
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145 | this.filters[ i - 1 ].connect( this.filters[ i ] );
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146 |
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147 | }
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148 |
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149 | this.filters[ this.filters.length - 1 ].connect( this.getOutput() );
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150 |
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151 | } else {
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152 |
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153 | this.source.connect( this.getOutput() );
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154 |
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155 | }
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156 |
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157 | return this;
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158 |
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159 | },
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160 |
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161 | disconnect: function () {
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162 |
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163 | if ( this.filters.length > 0 ) {
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164 |
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165 | this.source.disconnect( this.filters[ 0 ] );
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166 |
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167 | for ( var i = 1, l = this.filters.length; i < l; i ++ ) {
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168 |
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169 | this.filters[ i - 1 ].disconnect( this.filters[ i ] );
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170 |
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171 | }
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172 |
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173 | this.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );
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174 |
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175 | } else {
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176 |
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177 | this.source.disconnect( this.getOutput() );
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178 |
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179 | }
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180 |
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181 | return this;
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182 |
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183 | },
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184 |
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185 | getFilters: function () {
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186 |
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187 | return this.filters;
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188 |
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189 | },
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190 |
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191 | setFilters: function ( value ) {
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192 |
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193 | if ( ! value ) value = [];
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194 |
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195 | if ( this.isPlaying === true ) {
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196 |
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197 | this.disconnect();
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198 | this.filters = value;
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199 | this.connect();
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200 |
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201 | } else {
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202 |
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203 | this.filters = value;
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204 |
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205 | }
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206 |
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207 | return this;
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208 |
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209 | },
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210 |
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211 | getFilter: function () {
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212 |
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213 | return this.getFilters()[ 0 ];
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214 |
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215 | },
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216 |
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217 | setFilter: function ( filter ) {
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218 |
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219 | return this.setFilters( filter ? [ filter ] : [] );
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220 |
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221 | },
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222 |
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223 | setPlaybackRate: function ( value ) {
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224 |
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225 | if ( this.hasPlaybackControl === false ) {
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226 |
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227 | console.warn( 'THREE.Audio: this Audio has no playback control.' );
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228 | return;
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229 |
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230 | }
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231 |
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232 | this.playbackRate = value;
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233 |
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234 | if ( this.isPlaying === true ) {
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235 |
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236 | this.source.playbackRate.setValueAtTime( this.playbackRate, this.context.currentTime );
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237 |
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238 | }
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239 |
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240 | return this;
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241 |
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242 | },
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243 |
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244 | getPlaybackRate: function () {
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245 |
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246 | return this.playbackRate;
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247 |
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248 | },
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249 |
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250 | onEnded: function () {
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251 |
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252 | this.isPlaying = false;
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253 |
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254 | },
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255 |
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256 | getLoop: function () {
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257 |
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258 | if ( this.hasPlaybackControl === false ) {
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259 |
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260 | console.warn( 'THREE.Audio: this Audio has no playback control.' );
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261 | return false;
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262 |
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263 | }
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264 |
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265 | return this.loop;
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266 |
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267 | },
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268 |
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269 | setLoop: function ( value ) {
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270 |
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271 | if ( this.hasPlaybackControl === false ) {
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272 |
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273 | console.warn( 'THREE.Audio: this Audio has no playback control.' );
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274 | return;
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275 |
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276 | }
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277 |
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278 | this.loop = value;
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279 |
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280 | if ( this.isPlaying === true ) {
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281 |
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282 | this.source.loop = this.loop;
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283 |
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284 | }
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285 |
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286 | return this;
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287 |
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288 | },
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289 |
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290 | getVolume: function () {
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291 |
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292 | return this.gain.gain.value;
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293 |
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294 | },
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295 |
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296 | setVolume: function ( value ) {
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297 |
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298 | this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );
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299 |
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300 | return this;
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301 |
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302 | }
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303 |
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304 | } );
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305 |
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306 | export { Audio };
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