| OLD | NEW |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 importScripts('function_sequence.js'); | 5 importScripts('function_sequence.js'); |
| 6 importScripts('function_parallel.js'); | 6 importScripts('function_parallel.js'); |
| 7 | 7 |
| 8 function Id3Parser(parent) { | 8 function Id3Parser(parent) { |
| 9 MetadataParser.call(this, parent, 'id3', /\.(mp3)$/i); | 9 MetadataParser.call(this, parent, 'id3', /\.(mp3)$/i); |
| 10 } | 10 } |
| 11 | 11 |
| 12 Id3Parser.prototype = {__proto__: MetadataParser.prototype}; | 12 Id3Parser.prototype = {__proto__: MetadataParser.prototype}; |
| 13 | 13 |
| 14 /** | 14 /** |
| 15 * Reads synchsafe integer. | 15 * Reads synchsafe integer. |
| 16 * 'SynchSafe' term is taken from id3 documentation. | 16 * 'SynchSafe' term is taken from id3 documentation. |
| 17 * | 17 * |
| 18 * @private |
| 18 * @param {ByteReader} reader - reader to use. | 19 * @param {ByteReader} reader - reader to use. |
| 19 * @param {int} length - bytes to read. | 20 * @param {int} length - bytes to read. |
| 20 * @return {int} | 21 * @return {int} |
| 21 */ | 22 */ |
| 22 Id3Parser.readSynchSafe_ = function(reader, length) { | 23 Id3Parser.readSynchSafe_ = function(reader, length) { |
| 23 var rv = 0; | 24 var rv = 0; |
| 24 | 25 |
| 25 switch (length) { | 26 switch (length) { |
| 26 case 4: | 27 case 4: |
| 27 rv = reader.readScalar(1, false) << 21; | 28 rv = reader.readScalar(1, false) << 21; |
| 28 case 3: | 29 case 3: |
| 29 rv |= reader.readScalar(1, false) << 14; | 30 rv |= reader.readScalar(1, false) << 14; |
| 30 case 2: | 31 case 2: |
| 31 rv |= reader.readScalar(1, false) << 7; | 32 rv |= reader.readScalar(1, false) << 7; |
| 32 case 1: | 33 case 1: |
| 33 rv |= reader.readScalar(1, false); | 34 rv |= reader.readScalar(1, false); |
| 34 } | 35 } |
| 35 | 36 |
| 36 return rv; | 37 return rv; |
| 37 }; | 38 }; |
| 38 | 39 |
| 39 /** | 40 /** |
| 40 * Reads 3bytes integer. | 41 * Reads 3bytes integer. |
| 41 * | 42 * |
| 43 * @private |
| 42 * @param {ByteReader} reader - reader to use. | 44 * @param {ByteReader} reader - reader to use. |
| 43 * @return {int} | 45 * @return {int} |
| 44 */ | 46 */ |
| 45 Id3Parser.readUInt24_ = function(reader) { | 47 Id3Parser.readUInt24_ = function(reader) { |
| 46 return reader.readScalar(2, false) << 16 | reader.readScalar(1, false); | 48 return reader.readScalar(2, false) << 16 | reader.readScalar(1, false); |
| 47 }; | 49 }; |
| 48 | 50 |
| 49 /** | 51 /** |
| 50 * Reads string from reader with specified encoding | 52 * Reads string from reader with specified encoding |
| 51 * | 53 * |
| 54 * @private |
| 52 * @param {ByteReader} reader reader to use. | 55 * @param {ByteReader} reader reader to use. |
| 53 * @param {int} encoding string encoding. | 56 * @param {int} encoding string encoding. |
| 54 * @param {int} size maximum string size. Actual result may be shorter. | 57 * @param {int} size maximum string size. Actual result may be shorter. |
| 55 * | |
| 56 */ | 58 */ |
| 57 Id3Parser.prototype.readString_ = function(reader, encoding, size) { | 59 Id3Parser.prototype.readString_ = function(reader, encoding, size) { |
| 58 switch (encoding) { | 60 switch (encoding) { |
| 59 case Id3Parser.v2.ENCODING.ISO_8859_1: | 61 case Id3Parser.v2.ENCODING.ISO_8859_1: |
| 60 return reader.readNullTerminatedString(size); | 62 return reader.readNullTerminatedString(size); |
| 61 | 63 |
| 62 case Id3Parser.v2.ENCODING.UTF_16: | 64 case Id3Parser.v2.ENCODING.UTF_16: |
| 63 return reader.readNullTerminatedStringUTF16(true, size); | 65 return reader.readNullTerminatedStringUTF16(true, size); |
| 64 | 66 |
| 65 case Id3Parser.v2.ENCODING.UTF_16BE: | 67 case Id3Parser.v2.ENCODING.UTF_16BE: |
| 66 return reader.readNullTerminatedStringUTF16(false, size); | 68 return reader.readNullTerminatedStringUTF16(false, size); |
| 67 | 69 |
| 68 case Id3Parser.v2.ENCODING.UTF_8: | 70 case Id3Parser.v2.ENCODING.UTF_8: |
| 69 // TODO: implement UTF_8. | 71 // TODO: implement UTF_8. |
| 70 this.log('UTF8 encoding not supported, used ISO_8859_1 instead'); | 72 this.log('UTF8 encoding not supported, used ISO_8859_1 instead'); |
| 71 return reader.readNullTerminatedString(size); | 73 return reader.readNullTerminatedString(size); |
| 72 | 74 |
| 73 default: { | 75 default: { |
| 74 this.log('Unsupported encoding in ID3 tag: ' + encoding); | 76 this.log('Unsupported encoding in ID3 tag: ' + encoding); |
| 75 return ''; | 77 return ''; |
| 76 } | 78 } |
| 77 } | 79 } |
| 78 }; | 80 }; |
| 79 | 81 |
| 80 /** | 82 /** |
| 81 * Reads text frame from reader. | 83 * Reads text frame from reader. |
| 82 * | 84 * |
| 85 * @private |
| 83 * @param {ByteReader} reader reader to use. | 86 * @param {ByteReader} reader reader to use. |
| 84 * @param {int} majorVersion major id3 version to use. | 87 * @param {int} majorVersion major id3 version to use. |
| 85 * @param {Object} frame frame so store data at. | 88 * @param {Object} frame frame so store data at. |
| 86 * @param {int} end frame end position in reader. | 89 * @param {int} end frame end position in reader. |
| 87 */ | 90 */ |
| 88 Id3Parser.prototype.readTextFrame_ = function(reader, | 91 Id3Parser.prototype.readTextFrame_ = function(reader, |
| 89 majorVersion, | 92 majorVersion, |
| 90 frame, | 93 frame, |
| 91 end) { | 94 end) { |
| 92 frame.encoding = reader.readScalar(1, false, end); | 95 frame.encoding = reader.readScalar(1, false, end); |
| 93 frame.value = this.readString_(reader, frame.encoding, end - reader.tell()); | 96 frame.value = this.readString_(reader, frame.encoding, end - reader.tell()); |
| 94 }; | 97 }; |
| 95 | 98 |
| 96 /** | 99 /** |
| 97 * Reads user defined text frame from reader. | 100 * Reads user defined text frame from reader. |
| 98 * | 101 * |
| 102 * @private |
| 99 * @param {ByteReader} reader reader to use. | 103 * @param {ByteReader} reader reader to use. |
| 100 * @param {int} majorVersion major id3 version to use. | 104 * @param {int} majorVersion major id3 version to use. |
| 101 * @param {Object} frame frame so store data at. | 105 * @param {Object} frame frame so store data at. |
| 102 * @param {int} end frame end position in reader. | 106 * @param {int} end frame end position in reader. |
| 103 */ | 107 */ |
| 104 Id3Parser.prototype.readUserDefinedTextFrame_ = function(reader, | 108 Id3Parser.prototype.readUserDefinedTextFrame_ = function(reader, |
| 105 majorVersion, | 109 majorVersion, |
| 106 frame, | 110 frame, |
| 107 end) { | 111 end) { |
| 108 frame.encoding = reader.readScalar(1, false, end); | 112 frame.encoding = reader.readScalar(1, false, end); |
| 109 | 113 |
| 110 frame.description = this.readString_( | 114 frame.description = this.readString_( |
| 111 reader, | 115 reader, |
| 112 frame.encoding, | 116 frame.encoding, |
| 113 end - reader.tell()); | 117 end - reader.tell()); |
| 114 | 118 |
| 115 frame.value = this.readString_( | 119 frame.value = this.readString_( |
| 116 reader, | 120 reader, |
| 117 frame.encoding, | 121 frame.encoding, |
| 118 end - reader.tell()); | 122 end - reader.tell()); |
| 119 }; | 123 }; |
| 120 | 124 |
| 125 /** |
| 126 * @private |
| 127 */ |
| 121 Id3Parser.prototype.readPIC_ = function(reader, majorVersion, frame, end) { | 128 Id3Parser.prototype.readPIC_ = function(reader, majorVersion, frame, end) { |
| 122 frame.encoding = reader.readScalar(1, false, end); | 129 frame.encoding = reader.readScalar(1, false, end); |
| 123 frame.format = reader.readNullTerminatedString(3, end - reader.tell()); | 130 frame.format = reader.readNullTerminatedString(3, end - reader.tell()); |
| 124 frame.pictureType = reader.readScalar(1, false, end); | 131 frame.pictureType = reader.readScalar(1, false, end); |
| 125 frame.description = this.readString_(reader, | 132 frame.description = this.readString_(reader, |
| 126 frame.encoding, | 133 frame.encoding, |
| 127 end - reader.tell()); | 134 end - reader.tell()); |
| 128 | 135 |
| 129 | 136 |
| 130 if (frame.format == '-->') { | 137 if (frame.format == '-->') { |
| 131 frame.imageUrl = reader.readNullTerminatedString(end - reader.tell()); | 138 frame.imageUrl = reader.readNullTerminatedString(end - reader.tell()); |
| 132 } else { | 139 } else { |
| 133 frame.imageUrl = reader.readImage(end - reader.tell()); | 140 frame.imageUrl = reader.readImage(end - reader.tell()); |
| 134 } | 141 } |
| 135 }; | 142 }; |
| 136 | 143 |
| 144 /** |
| 145 * @private |
| 146 */ |
| 137 Id3Parser.prototype.readAPIC_ = function(reader, majorVersion, frame, end) { | 147 Id3Parser.prototype.readAPIC_ = function(reader, majorVersion, frame, end) { |
| 138 this.vlog('Extracting picture'); | 148 this.vlog('Extracting picture'); |
| 139 frame.encoding = reader.readScalar(1, false, end); | 149 frame.encoding = reader.readScalar(1, false, end); |
| 140 frame.mime = reader.readNullTerminatedString(end - reader.tell()); | 150 frame.mime = reader.readNullTerminatedString(end - reader.tell()); |
| 141 frame.pictureType = reader.readScalar(1, false, end); | 151 frame.pictureType = reader.readScalar(1, false, end); |
| 142 frame.description = this.readString_( | 152 frame.description = this.readString_( |
| 143 reader, | 153 reader, |
| 144 frame.encoding, | 154 frame.encoding, |
| 145 end - reader.tell()); | 155 end - reader.tell()); |
| 146 | 156 |
| 147 if (frame.mime == '-->') { | 157 if (frame.mime == '-->') { |
| 148 frame.imageUrl = reader.readNullTerminatedString(end - reader.tell()); | 158 frame.imageUrl = reader.readNullTerminatedString(end - reader.tell()); |
| 149 } else { | 159 } else { |
| 150 frame.imageUrl = reader.readImage(end - reader.tell()); | 160 frame.imageUrl = reader.readImage(end - reader.tell()); |
| 151 } | 161 } |
| 152 }; | 162 }; |
| 153 | 163 |
| 154 /** | 164 /** |
| 155 * Reads string from reader with specified encoding | 165 * Reads string from reader with specified encoding |
| 156 * | 166 * |
| 167 * @private |
| 157 * @param {ByteReader} reader reader to use. | 168 * @param {ByteReader} reader reader to use. |
| 158 * @return {Object} frame read. | 169 * @return {Object} frame read. |
| 159 */ | 170 */ |
| 160 Id3Parser.prototype.readFrame_ = function(reader, majorVersion) { | 171 Id3Parser.prototype.readFrame_ = function(reader, majorVersion) { |
| 161 if (reader.eof()) | 172 if (reader.eof()) |
| 162 return null; | 173 return null; |
| 163 | 174 |
| 164 var frame = {}; | 175 var frame = {}; |
| 165 | 176 |
| 166 reader.pushSeek(reader.tell(), ByteReader.SEEK_BEG); | 177 reader.pushSeek(reader.tell(), ByteReader.SEEK_BEG); |
| (...skipping 502 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 669 TYER: 'ID3_YEAR', | 680 TYER: 'ID3_YEAR', |
| 670 WCOP: 'ID3_COPYRIGHT', | 681 WCOP: 'ID3_COPYRIGHT', |
| 671 WOAF: 'ID3_OFFICIAL_AUDIO_FILE_WEBPAGE', | 682 WOAF: 'ID3_OFFICIAL_AUDIO_FILE_WEBPAGE', |
| 672 WOAR: 'ID3_OFFICIAL_ARTIST', | 683 WOAR: 'ID3_OFFICIAL_ARTIST', |
| 673 WOAS: 'ID3_OFFICIAL_AUDIO_SOURCE_WEBPAGE', | 684 WOAS: 'ID3_OFFICIAL_AUDIO_SOURCE_WEBPAGE', |
| 674 WPUB: 'ID3_PUBLISHERS_OFFICIAL_WEBPAGE' | 685 WPUB: 'ID3_PUBLISHERS_OFFICIAL_WEBPAGE' |
| 675 } | 686 } |
| 676 }; | 687 }; |
| 677 | 688 |
| 678 MetadataDispatcher.registerParserClass(Id3Parser); | 689 MetadataDispatcher.registerParserClass(Id3Parser); |
| OLD | NEW |