module.audio-video.asf.php

一个用PHP编写的

									$thisfile_video['bitrate_mode'] = 'vbr';
								}
								break;

							case 'id3':
								// id3v2 module might not be loaded
								if (class_exists('getid3_id3v2')) {
								    $tempfile         = tempnam('*', 'getID3');
								    $tempfilehandle   = fopen($tempfile, "wb");
									$tempThisfileInfo = array('encoding'=>$ThisFileInfo['encoding']);
									fwrite($tempfilehandle, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
									fclose($tempfilehandle);

									$tempfilehandle = fopen($tempfile, "rb");
									$id3 = new getid3_id3v2($tempfilehandle, $tempThisfileInfo);
									fclose($tempfilehandle);
									unlink($tempfile);

									$ThisFileInfo['id3v2'] = $tempThisfileInfo['id3v2'];
								}
								break;

							case 'wm/encodingtime':
								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
								$thisfile_asf_comments['encoding_time_unix'] = array($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix']);
								break;

							case 'wm/picture':
								//typedef struct _WMPicture{
								//  LPWSTR  pwszMIMEType;
								//  BYTE  bPictureType;
								//  LPWSTR  pwszDescription;
								//  DWORD  dwDataLen;
								//  BYTE*  pbData;
								//} WM_PICTURE;

								$wm_picture_offset = 0;
								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id'] = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 1));
								$wm_picture_offset += 1;
								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type']    = $this->WMpictureTypeLookup($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id']);
								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_size']    = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 4));
								$wm_picture_offset += 4;

								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = '';
								do {
									$next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2);
									$wm_picture_offset += 2;
									$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] .= $next_byte_pair;
								} while ($next_byte_pair !== "\x00\x00");

								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] = '';
								do {
									$next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2);
									$wm_picture_offset += 2;
									$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] .= $next_byte_pair;
								} while ($next_byte_pair !== "\x00\x00");

								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['dataoffset'] = $wm_picture_offset;
								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'] = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset);
								unset($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);

								break;

							default:
								switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) {
									case 0: // Unicode string
										if (substr($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']), 0, 3) == 'WM/') {
											$thisfile_asf_comments[str_replace('wm/', '', strtolower($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name'])))] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
										}
										break;

									case 1:
										break;
								}
								break;
						}

					}
					break;

				case GETID3_ASF_Stream_Bitrate_Properties_Object:
					// Stream Bitrate Properties Object: (optional, one only)
					// Field Name                   Field Type   Size (bits)
					// Object ID                    GUID         128             // GUID for Stream Bitrate Properties object - GETID3_ASF_Stream_Bitrate_Properties_Object
					// Object Size                  QWORD        64              // size of Extended Content Description object, including 26 bytes of Stream Bitrate Properties Object header
					// Bitrate Records Count        WORD         16              // number of records in Bitrate Records
					// Bitrate Records              array of:    variable        //
					// * Flags                      WORD         16              //
					// * * Stream Number            bits         7  (0x007F)     // number of this stream
					// * * Reserved                 bits         9  (0xFF80)     // hardcoded: 0
					// * Average Bitrate            DWORD        32              // in bits per second

					// shortcut
					$thisfile_asf['stream_bitrate_properties_object'] = array();
					$thisfile_asf_streambitratepropertiesobject       = &$thisfile_asf['stream_bitrate_properties_object'];

					$thisfile_asf_streambitratepropertiesobject['objectid']                  = $NextObjectGUID;
					$thisfile_asf_streambitratepropertiesobject['objectid_guid']             = $NextObjectGUIDtext;
					$thisfile_asf_streambitratepropertiesobject['objectsize']                = $NextObjectSize;
					$thisfile_asf_streambitratepropertiesobject['bitrate_records_count']     = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
					$offset += 2;
					for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']; $BitrateRecordsCounter++) {
						$thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
						$offset += 2;
						$thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags']['stream_number'] = $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] & 0x007F;
						$thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
						$offset += 4;
					}
					break;

				case GETID3_ASF_Padding_Object:
					// Padding Object: (optional)
					// Field Name                   Field Type   Size (bits)
					// Object ID                    GUID         128             // GUID for Padding object - GETID3_ASF_Padding_Object
					// Object Size                  QWORD        64              // size of Padding object, including 24 bytes of ASF Padding Object header
					// Padding Data                 BYTESTREAM   variable        // ignore

					// shortcut
					$thisfile_asf['padding_object'] = array();
					$thisfile_asf_paddingobject     = &$thisfile_asf['padding_object'];

					$thisfile_asf_paddingobject['objectid']                  = $NextObjectGUID;
					$thisfile_asf_paddingobject['objectid_guid']             = $NextObjectGUIDtext;
					$thisfile_asf_paddingobject['objectsize']                = $NextObjectSize;
					$thisfile_asf_paddingobject['padding_length']            = $thisfile_asf_paddingobject['objectsize'] - 16 - 8;
					$thisfile_asf_paddingobject['padding']                   = substr($ASFHeaderData, $offset, $thisfile_asf_paddingobject['padding_length']);
					break;

				case GETID3_ASF_Extended_Content_Encryption_Object:
				case GETID3_ASF_Content_Encryption_Object:
					// WMA DRM - just ignore
					$offset += ($NextObjectSize - 16 - 8);
					break;

				default:
					// Implementations shall ignore any standard or non-standard object that they do not know how to handle.
					if ($this->GUIDname($NextObjectGUIDtext)) {
						$ThisFileInfo['warning'][] = 'unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8);
					} else {
						$ThisFileInfo['warning'][] = 'unknown GUID {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8);
					}
					$offset += ($NextObjectSize - 16 - 8);
					break;
			}
		}
		if (isset($thisfile_asf_streambitrateproperties['bitrate_records_count'])) {
			$ASFbitrateAudio = 0;
			$ASFbitrateVideo = 0;
			for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitrateproperties['bitrate_records_count']; $BitrateRecordsCounter++) {
				if (isset($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter])) {
					switch ($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter]['type_raw']) {
						case 1:
							$ASFbitrateVideo += $thisfile_asf_streambitrateproperties['bitrate_records'][$BitrateRecordsCounter]['bitrate'];
							break;

						case 2:
							$ASFbitrateAudio += $thisfile_asf_streambitrateproperties['bitrate_records'][$BitrateRecordsCounter]['bitrate'];
							break;

						default:
							// do nothing
							break;
					}
				}
			}
			if ($ASFbitrateAudio > 0) {
				$thisfile_audio['bitrate'] = $ASFbitrateAudio;
			}
			if ($ASFbitrateVideo > 0) {
				$thisfile_video['bitrate'] = $ASFbitrateVideo;
			}
		}
		if (isset($thisfile_asf['stream_properties_object']) && is_array($thisfile_asf['stream_properties_object'])) {

			$thisfile_audio['bitrate'] = 0;
			$thisfile_video['bitrate'] = 0;

			foreach ($thisfile_asf['stream_properties_object'] as $streamnumber => $streamdata) {

				switch ($streamdata['stream_type']) {
					case GETID3_ASF_Audio_Media:
						// Field Name                   Field Type   Size (bits)
						// Codec ID / Format Tag        WORD         16              // unique ID of audio codec - defined as wFormatTag field of WAVEFORMATEX structure
						// Number of Channels           WORD         16              // number of channels of audio - defined as nChannels field of WAVEFORMATEX structure
						// Samples Per Second           DWORD        32              // in Hertz - defined as nSamplesPerSec field of WAVEFORMATEX structure
						// Average number of Bytes/sec  DWORD        32              // bytes/sec of audio stream  - defined as nAvgBytesPerSec field of WAVEFORMATEX structure
						// Block Alignment              WORD         16              // block size in bytes of audio codec - defined as nBlockAlign field of WAVEFORMATEX structure
						// Bits per sample              WORD         16              // bits per sample of mono data. set to zero for variable bitrate codecs. defined as wBitsPerSample field of WAVEFORMATEX structure
						// Codec Specific Data Size     WORD         16              // size in bytes of Codec Specific Data buffer - defined as cbSize field of WAVEFORMATEX structure
						// Codec Specific Data          BYTESTREAM   variable        // array of codec-specific data bytes

						// shortcut
						$thisfile_asf['audio_media'][$streamnumber] = array();
						$thisfile_asf_