1 | <?php |
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2 | ///////////////////////////////////////////////////////////////// |
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3 | /// getID3() by James Heinrich <info@getid3.org> // |
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4 | // available at http://getid3.sourceforge.net // |
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5 | // or http://www.getid3.org // |
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6 | // // |
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7 | // FLV module by Seth Kaufman <seth@whirl-i-gig.com> // |
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8 | // // |
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9 | // * version 0.1 (26 June 2005) // |
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10 | // // |
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11 | // minor modifications by James Heinrich <info@getid3.org> // |
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12 | // * version 0.1.1 (15 July 2005) // |
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13 | // // |
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14 | // Support for On2 VP6 codec and meta information // |
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15 | // by Steve Webster <steve.webster@featurecreep.com> // |
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16 | // * version 0.2 (22 February 2006) // |
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17 | // // |
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18 | // Modified to not read entire file into memory // |
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19 | // by James Heinrich <info@getid3.org> // |
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20 | // * version 0.3 (15 June 2006) // |
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21 | // // |
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22 | // Bugfixes for incorrectly parsed FLV dimensions // |
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23 | // and incorrect parsing of onMetaTag // |
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24 | // by Evgeny Moysevich <moysevich@gmail.com> // |
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25 | // * version 0.4 (07 December 2007) // |
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26 | // // |
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27 | ///////////////////////////////////////////////////////////////// |
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28 | // // |
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29 | // module.audio-video.flv.php // |
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30 | // module for analyzing Shockwave Flash Video files // |
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31 | // dependencies: NONE // |
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32 | // /// |
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33 | ///////////////////////////////////////////////////////////////// |
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34 | |
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35 | define('GETID3_FLV_TAG_AUDIO', 8); |
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36 | define('GETID3_FLV_TAG_VIDEO', 9); |
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37 | define('GETID3_FLV_TAG_META', 18); |
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38 | |
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39 | define('GETID3_FLV_VIDEO_H263', 2); |
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40 | define('GETID3_FLV_VIDEO_SCREEN', 3); |
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41 | define('GETID3_FLV_VIDEO_VP6', 4); |
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42 | |
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43 | class getid3_flv |
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44 | { |
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45 | |
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46 | function getid3_flv(&$fd, &$ThisFileInfo, $ReturnAllTagData=false) { |
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47 | //$start_time = microtime(true); |
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48 | fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); |
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49 | |
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50 | $FLVdataLength = $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']; |
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51 | $FLVheader = fread($fd, 5); |
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52 | |
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53 | $ThisFileInfo['fileformat'] = 'flv'; |
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54 | $ThisFileInfo['flv']['header']['signature'] = substr($FLVheader, 0, 3); |
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55 | $ThisFileInfo['flv']['header']['version'] = getid3_lib::BigEndian2Int(substr($FLVheader, 3, 1)); |
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56 | $TypeFlags = getid3_lib::BigEndian2Int(substr($FLVheader, 4, 1)); |
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57 | |
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58 | if ($ThisFileInfo['flv']['header']['signature'] != 'FLV') { |
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59 | $ThisFileInfo['error'][] = 'Expecting "FLV" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$ThisFileInfo['flv']['header']['signature'].'"'; |
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60 | unset($ThisFileInfo['flv']); |
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61 | unset($ThisFileInfo['fileformat']); |
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62 | return false; |
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63 | } |
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64 | |
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65 | $ThisFileInfo['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x04); |
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66 | $ThisFileInfo['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x01); |
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67 | |
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68 | $FrameSizeDataLength = getid3_lib::BigEndian2Int(fread($fd, 4)); |
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69 | $FLVheaderFrameLength = 9; |
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70 | if ($FrameSizeDataLength > $FLVheaderFrameLength) { |
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71 | fseek($fd, $FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR); |
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72 | } |
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73 | //echo __LINE__.'='.number_format(microtime(true) - $start_time, 3).'<br>'; |
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74 | |
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75 | $Duration = 0; |
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76 | $found_video = false; |
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77 | $found_audio = false; |
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78 | $found_meta = false; |
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79 | while ((ftell($fd) + 16) < $ThisFileInfo['avdataend']) { |
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80 | $ThisTagHeader = fread($fd, 16); |
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81 | |
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82 | $PreviousTagLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 0, 4)); |
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83 | $TagType = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 4, 1)); |
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84 | $DataLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 5, 3)); |
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85 | $Timestamp = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 8, 3)); |
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86 | $LastHeaderByte = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 15, 1)); |
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87 | $NextOffset = ftell($fd) - 1 + $DataLength; |
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88 | if ($Timestamp > $Duration) { |
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89 | $Duration = $Timestamp; |
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90 | } |
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91 | |
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92 | //echo __LINE__.'['.ftell($fd).']=('.$TagType.')='.number_format(microtime(true) - $start_time, 3).'<br>'; |
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93 | |
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94 | switch ($TagType) { |
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95 | case GETID3_FLV_TAG_AUDIO: |
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96 | if (!$found_audio) { |
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97 | $found_audio = true; |
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98 | $ThisFileInfo['flv']['audio']['audioFormat'] = $LastHeaderByte & 0x07; |
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99 | $ThisFileInfo['flv']['audio']['audioRate'] = ($LastHeaderByte & 0x30) / 0x10; |
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100 | $ThisFileInfo['flv']['audio']['audioSampleSize'] = ($LastHeaderByte & 0x40) / 0x40; |
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101 | $ThisFileInfo['flv']['audio']['audioType'] = ($LastHeaderByte & 0x80) / 0x80; |
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102 | } |
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103 | break; |
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104 | |
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105 | case GETID3_FLV_TAG_VIDEO: |
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106 | if (!$found_video) { |
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107 | $found_video = true; |
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108 | $ThisFileInfo['flv']['video']['videoCodec'] = $LastHeaderByte & 0x07; |
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109 | |
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110 | $FLVvideoHeader = fread($fd, 11); |
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111 | |
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112 | if ($ThisFileInfo['flv']['video']['videoCodec'] != GETID3_FLV_VIDEO_VP6) { |
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113 | |
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114 | $PictureSizeType = (getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 3, 2))) >> 7; |
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115 | $PictureSizeType = $PictureSizeType & 0x0007; |
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116 | $ThisFileInfo['flv']['header']['videoSizeType'] = $PictureSizeType; |
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117 | switch ($PictureSizeType) { |
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118 | case 0: |
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119 | //$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2)); |
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120 | //$PictureSizeEnc <<= 1; |
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121 | //$ThisFileInfo['video']['resolution_x'] = ($PictureSizeEnc & 0xFF00) >> 8; |
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122 | //$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2)); |
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123 | //$PictureSizeEnc <<= 1; |
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124 | //$ThisFileInfo['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8; |
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125 | |
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126 | $PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 2)); |
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127 | $PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2)); |
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128 | $PictureSizeEnc['x'] >>= 7; |
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129 | $PictureSizeEnc['y'] >>= 7; |
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130 | $ThisFileInfo['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFF; |
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131 | $ThisFileInfo['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFF; |
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132 | break; |
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133 | |
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134 | case 1: |
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135 | $PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 3)); |
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136 | $PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 3)); |
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137 | $PictureSizeEnc['x'] >>= 7; |
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138 | $PictureSizeEnc['y'] >>= 7; |
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139 | $ThisFileInfo['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFFFF; |
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140 | $ThisFileInfo['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFFFF; |
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141 | break; |
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142 | |
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143 | case 2: |
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144 | $ThisFileInfo['video']['resolution_x'] = 352; |
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145 | $ThisFileInfo['video']['resolution_y'] = 288; |
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146 | break; |
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147 | |
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148 | case 3: |
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149 | $ThisFileInfo['video']['resolution_x'] = 176; |
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150 | $ThisFileInfo['video']['resolution_y'] = 144; |
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151 | break; |
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152 | |
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153 | case 4: |
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154 | $ThisFileInfo['video']['resolution_x'] = 128; |
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155 | $ThisFileInfo['video']['resolution_y'] = 96; |
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156 | break; |
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157 | |
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158 | case 5: |
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159 | $ThisFileInfo['video']['resolution_x'] = 320; |
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160 | $ThisFileInfo['video']['resolution_y'] = 240; |
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161 | break; |
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162 | |
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163 | case 6: |
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164 | $ThisFileInfo['video']['resolution_x'] = 160; |
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165 | $ThisFileInfo['video']['resolution_y'] = 120; |
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166 | break; |
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167 | |
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168 | default: |
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169 | $ThisFileInfo['video']['resolution_x'] = 0; |
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170 | $ThisFileInfo['video']['resolution_y'] = 0; |
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171 | break; |
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172 | |
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173 | } |
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174 | } |
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175 | } |
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176 | break; |
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177 | |
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178 | // Meta tag |
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179 | case GETID3_FLV_TAG_META: |
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180 | if (!$found_meta) { |
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181 | $found_meta = true; |
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182 | fseek($fd, -1, SEEK_CUR); |
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183 | $reader = new AMFReader(new AMFStream(fread($fd, $DataLength))); |
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184 | $eventName = $reader->readData(); |
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185 | $ThisFileInfo['meta'][$eventName] = $reader->readData(); |
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186 | unset($reader); |
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187 | |
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188 | $ThisFileInfo['video']['frame_rate'] = @$ThisFileInfo['meta']['onMetaData']['framerate']; |
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189 | $ThisFileInfo['video']['resolution_x'] = @$ThisFileInfo['meta']['onMetaData']['width']; |
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190 | $ThisFileInfo['video']['resolution_y'] = @$ThisFileInfo['meta']['onMetaData']['height']; |
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191 | } |
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192 | break; |
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193 | |
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194 | default: |
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195 | // noop |
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196 | break; |
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197 | } |
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198 | |
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199 | fseek($fd, $NextOffset, SEEK_SET); |
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200 | } |
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201 | |
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202 | if ($ThisFileInfo['playtime_seconds'] = $Duration / 1000) { |
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203 | $ThisFileInfo['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds']; |
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204 | } |
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205 | |
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206 | if ($ThisFileInfo['flv']['header']['hasAudio']) { |
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207 | $ThisFileInfo['audio']['codec'] = $this->FLVaudioFormat($ThisFileInfo['flv']['audio']['audioFormat']); |
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208 | $ThisFileInfo['audio']['sample_rate'] = $this->FLVaudioRate($ThisFileInfo['flv']['audio']['audioRate']); |
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209 | $ThisFileInfo['audio']['bits_per_sample'] = $this->FLVaudioBitDepth($ThisFileInfo['flv']['audio']['audioSampleSize']); |
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210 | |
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211 | $ThisFileInfo['audio']['channels'] = $ThisFileInfo['flv']['audio']['audioType'] + 1; // 0=mono,1=stereo |
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212 | $ThisFileInfo['audio']['lossless'] = ($ThisFileInfo['flv']['audio']['audioFormat'] ? false : true); // 0=uncompressed |
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213 | $ThisFileInfo['audio']['dataformat'] = 'flv'; |
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214 | } |
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215 | if (@$ThisFileInfo['flv']['header']['hasVideo']) { |
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216 | $ThisFileInfo['video']['codec'] = $this->FLVvideoCodec($ThisFileInfo['flv']['video']['videoCodec']); |
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217 | $ThisFileInfo['video']['dataformat'] = 'flv'; |
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218 | $ThisFileInfo['video']['lossless'] = false; |
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219 | } |
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220 | |
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221 | return true; |
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222 | } |
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223 | |
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224 | |
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225 | function FLVaudioFormat($id) { |
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226 | $FLVaudioFormat = array( |
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227 | 0 => 'uncompressed', |
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228 | 1 => 'ADPCM', |
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229 | 2 => 'mp3', |
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230 | 5 => 'Nellymoser 8kHz mono', |
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231 | 6 => 'Nellymoser', |
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232 | ); |
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233 | return (@$FLVaudioFormat[$id] ? @$FLVaudioFormat[$id] : false); |
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234 | } |
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235 | |
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236 | function FLVaudioRate($id) { |
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237 | $FLVaudioRate = array( |
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238 | 0 => 5500, |
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239 | 1 => 11025, |
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240 | 2 => 22050, |
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241 | 3 => 44100, |
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242 | ); |
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243 | return (@$FLVaudioRate[$id] ? @$FLVaudioRate[$id] : false); |
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244 | } |
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245 | |
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246 | function FLVaudioBitDepth($id) { |
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247 | $FLVaudioBitDepth = array( |
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248 | 0 => 8, |
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249 | 1 => 16, |
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250 | ); |
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251 | return (@$FLVaudioBitDepth[$id] ? @$FLVaudioBitDepth[$id] : false); |
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252 | } |
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253 | |
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254 | function FLVvideoCodec($id) { |
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255 | $FLVvideoCodec = array( |
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256 | GETID3_FLV_VIDEO_H263 => 'Sorenson H.263', |
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257 | GETID3_FLV_VIDEO_SCREEN => 'Screen video', |
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258 | GETID3_FLV_VIDEO_VP6 => 'On2 VP6', |
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259 | ); |
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260 | return (@$FLVvideoCodec[$id] ? @$FLVvideoCodec[$id] : false); |
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261 | } |
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262 | } |
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263 | |
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264 | class AMFStream { |
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265 | var $bytes; |
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266 | var $pos; |
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267 | |
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268 | function AMFStream(&$bytes) { |
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269 | $this->bytes =& $bytes; |
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270 | $this->pos = 0; |
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271 | } |
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272 | |
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273 | function readByte() { |
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274 | return getid3_lib::BigEndian2Int(substr($this->bytes, $this->pos++, 1)); |
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275 | } |
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276 | |
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277 | function readInt() { |
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278 | return ($this->readByte() << 8) + $this->readByte(); |
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279 | } |
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280 | |
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281 | function readLong() { |
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282 | return ($this->readByte() << 24) + ($this->readByte() << 16) + ($this->readByte() << 8) + $this->readByte(); |
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283 | } |
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284 | |
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285 | function readDouble() { |
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286 | return getid3_lib::BigEndian2Float($this->read(8)); |
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287 | } |
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288 | |
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289 | function readUTF() { |
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290 | $length = $this->readInt(); |
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291 | return $this->read($length); |
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292 | } |
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293 | |
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294 | function readLongUTF() { |
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295 | $length = $this->readLong(); |
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296 | return $this->read($length); |
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297 | } |
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298 | |
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299 | function read($length) { |
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300 | $val = substr($this->bytes, $this->pos, $length); |
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301 | $this->pos += $length; |
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302 | return $val; |
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303 | } |
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304 | |
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305 | function peekByte() { |
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306 | $pos = $this->pos; |
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307 | $val = $this->readByte(); |
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308 | $this->pos = $pos; |
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309 | return $val; |
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310 | } |
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311 | |
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312 | function peekInt() { |
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313 | $pos = $this->pos; |
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314 | $val = $this->readInt(); |
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315 | $this->pos = $pos; |
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316 | return $val; |
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317 | } |
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318 | |
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319 | function peekLong() { |
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320 | $pos = $this->pos; |
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321 | $val = $this->readLong(); |
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322 | $this->pos = $pos; |
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323 | return $val; |
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324 | } |
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325 | |
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326 | function peekDouble() { |
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327 | $pos = $this->pos; |
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328 | $val = $this->readDouble(); |
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329 | $this->pos = $pos; |
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330 | return $val; |
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331 | } |
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332 | |
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333 | function peekUTF() { |
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334 | $pos = $this->pos; |
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335 | $val = $this->readUTF(); |
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336 | $this->pos = $pos; |
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337 | return $val; |
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338 | } |
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339 | |
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340 | function peekLongUTF() { |
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341 | $pos = $this->pos; |
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342 | $val = $this->readLongUTF(); |
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343 | $this->pos = $pos; |
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344 | return $val; |
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345 | } |
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346 | } |
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347 | |
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348 | class AMFReader { |
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349 | var $stream; |
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350 | |
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351 | function AMFReader(&$stream) { |
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352 | $this->stream =& $stream; |
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353 | } |
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354 | |
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355 | function readData() { |
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356 | $value = null; |
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357 | |
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358 | $type = $this->stream->readByte(); |
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359 | switch ($type) { |
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360 | |
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361 | // Double |
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362 | case 0: |
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363 | $value = $this->readDouble(); |
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364 | break; |
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365 | |
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366 | // Boolean |
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367 | case 1: |
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368 | $value = $this->readBoolean(); |
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369 | break; |
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370 | |
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371 | // String |
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372 | case 2: |
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373 | $value = $this->readString(); |
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374 | break; |
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375 | |
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376 | // Object |
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377 | case 3: |
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378 | $value = $this->readObject(); |
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379 | break; |
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380 | |
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381 | // null |
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382 | case 6: |
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383 | return null; |
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384 | break; |
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385 | |
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386 | // Mixed array |
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387 | case 8: |
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388 | $value = $this->readMixedArray(); |
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389 | break; |
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390 | |
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391 | // Array |
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392 | case 10: |
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393 | $value = $this->readArray(); |
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394 | break; |
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395 | |
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396 | // Date |
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397 | case 11: |
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398 | $value = $this->readDate(); |
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399 | break; |
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400 | |
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401 | // Long string |
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402 | case 13: |
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403 | $value = $this->readLongString(); |
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404 | break; |
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405 | |
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406 | // XML (handled as string) |
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407 | case 15: |
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408 | $value = $this->readXML(); |
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409 | break; |
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410 | |
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411 | // Typed object (handled as object) |
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412 | case 16: |
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413 | $value = $this->readTypedObject(); |
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414 | break; |
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415 | |
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416 | // Long string |
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417 | default: |
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418 | $value = '(unknown or unsupported data type)'; |
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419 | break; |
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420 | } |
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421 | |
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422 | return $value; |
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423 | } |
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424 | |
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425 | function readDouble() { |
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426 | return $this->stream->readDouble(); |
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427 | } |
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428 | |
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429 | function readBoolean() { |
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430 | return $this->stream->readByte() == 1; |
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431 | } |
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432 | |
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433 | function readString() { |
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434 | return $this->stream->readUTF(); |
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435 | } |
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436 | |
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437 | function readObject() { |
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438 | // Get highest numerical index - ignored |
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439 | // $highestIndex = $this->stream->readLong(); |
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440 | |
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441 | $data = array(); |
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442 | |
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443 | while ($key = $this->stream->readUTF()) { |
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444 | $data[$key] = $this->readData(); |
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445 | } |
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446 | // Mixed array record ends with empty string (0x00 0x00) and 0x09 |
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447 | if (($key == '') && ($this->stream->peekByte() == 0x09)) { |
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448 | // Consume byte |
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449 | $this->stream->readByte(); |
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450 | } |
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451 | return $data; |
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452 | } |
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453 | |
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454 | function readMixedArray() { |
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455 | // Get highest numerical index - ignored |
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456 | $highestIndex = $this->stream->readLong(); |
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457 | |
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458 | $data = array(); |
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459 | |
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460 | while ($key = $this->stream->readUTF()) { |
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461 | if (is_numeric($key)) { |
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462 | $key = (float) $key; |
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463 | } |
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464 | $data[$key] = $this->readData(); |
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465 | } |
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466 | // Mixed array record ends with empty string (0x00 0x00) and 0x09 |
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467 | if (($key == '') && ($this->stream->peekByte() == 0x09)) { |
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468 | // Consume byte |
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469 | $this->stream->readByte(); |
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470 | } |
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471 | |
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472 | return $data; |
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473 | } |
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474 | |
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475 | function readArray() { |
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476 | $length = $this->stream->readLong(); |
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477 | $data = array(); |
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478 | |
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479 | for ($i = 0; $i < $length; $i++) { |
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480 | $data[] = $this->readData(); |
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481 | } |
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482 | return $data; |
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483 | } |
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484 | |
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485 | function readDate() { |
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486 | $timestamp = $this->stream->readDouble(); |
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487 | $timezone = $this->stream->readInt(); |
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488 | return $timestamp; |
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489 | } |
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490 | |
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491 | function readLongString() { |
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492 | return $this->stream->readLongUTF(); |
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493 | } |
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494 | |
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495 | function readXML() { |
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496 | return $this->stream->readLongUTF(); |
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497 | } |
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498 | |
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499 | function readTypedObject() { |
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500 | $className = $this->stream->readUTF(); |
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501 | return $this->readObject(); |
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502 | } |
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503 | } |
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504 | |
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505 | ?> |
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