module.audio-video.quicktime.php

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									// video atom
									$atomstructure['sample_description_table'][$i]['video_temporal_quality']  =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'],  8,  4));
									$atomstructure['sample_description_table'][$i]['video_spatial_quality']   =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 12,  4));
									$atomstructure['sample_description_table'][$i]['video_frame_width']       =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 16,  2));
									$atomstructure['sample_description_table'][$i]['video_frame_height']      =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 18,  2));
									$atomstructure['sample_description_table'][$i]['video_resolution_x']      = getid3_lib::FixedPoint16_16(substr($atomstructure['sample_description_table'][$i]['data'], 20,  4));
									$atomstructure['sample_description_table'][$i]['video_resolution_y']      = getid3_lib::FixedPoint16_16(substr($atomstructure['sample_description_table'][$i]['data'], 24,  4));
									$atomstructure['sample_description_table'][$i]['video_data_size']         =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 28,  4));
									$atomstructure['sample_description_table'][$i]['video_frame_count']       =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 32,  2));
									$atomstructure['sample_description_table'][$i]['video_encoder_name_len']  =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 34,  1));
									$atomstructure['sample_description_table'][$i]['video_encoder_name']      =                             substr($atomstructure['sample_description_table'][$i]['data'], 35, $atomstructure['sample_description_table'][$i]['video_encoder_name_len']);
									$atomstructure['sample_description_table'][$i]['video_pixel_color_depth'] =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 66,  2));
									$atomstructure['sample_description_table'][$i]['video_color_table_id']    =   getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 68,  2));

									$atomstructure['sample_description_table'][$i]['video_pixel_color_type']  = (($atomstructure['sample_description_table'][$i]['video_pixel_color_depth'] > 32) ? 'grayscale' : 'color');
									$atomstructure['sample_description_table'][$i]['video_pixel_color_name']  = $this->QuicktimeColorNameLookup($atomstructure['sample_description_table'][$i]['video_pixel_color_depth']);

									if ($atomstructure['sample_description_table'][$i]['video_pixel_color_name'] != 'invalid') {
										$ThisFileInfo['quicktime']['video']['codec_fourcc']        = $atomstructure['sample_description_table'][$i]['data_format'];
										$ThisFileInfo['quicktime']['video']['codec_fourcc_lookup'] = $this->QuicktimeVideoCodecLookup($atomstructure['sample_description_table'][$i]['data_format']);
										$ThisFileInfo['quicktime']['video']['codec']               = $atomstructure['sample_description_table'][$i]['video_encoder_name'];
										$ThisFileInfo['quicktime']['video']['color_depth']         = $atomstructure['sample_description_table'][$i]['video_pixel_color_depth'];
										$ThisFileInfo['quicktime']['video']['color_depth_name']    = $atomstructure['sample_description_table'][$i]['video_pixel_color_name'];

										$ThisFileInfo['video']['codec']           = $ThisFileInfo['quicktime']['video']['codec'];
										$ThisFileInfo['video']['bits_per_sample'] = $ThisFileInfo['quicktime']['video']['color_depth'];
									}
									$ThisFileInfo['video']['lossless']           = false;
									$ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1;
									break;
							}
							break;
					}
					switch (strtolower($atomstructure['sample_description_table'][$i]['data_format'])) {
						case 'mp4a':
							$ThisFileInfo['audio']['dataformat']         = 'mp4';
							$ThisFileInfo['quicktime']['audio']['codec'] = 'mp4';
							break;

						case '3ivx':
						case '3iv1':
						case '3iv2':
							$ThisFileInfo['video']['dataformat'] = '3ivx';
							break;

						case 'xvid':
							$ThisFileInfo['video']['dataformat'] = 'xvid';
							break;

						case 'mp4v':
							$ThisFileInfo['video']['dataformat'] = 'mpeg4';
							break;

						case 'divx':
						case 'div1':
						case 'div2':
						case 'div3':
						case 'div4':
						case 'div5':
						case 'div6':
							$TDIVXileInfo['video']['dataformat'] = 'divx';
							break;

						default:
							// do nothing
							break;
					}
					unset($atomstructure['sample_description_table'][$i]['data']);
				}
				break;


			case 'stts': // Sample Table Time-to-Sample atom
				//if ($ParseAllPossibleAtoms) {
					$atomstructure['version']        = getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));
					$atomstructure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atomdata,  1, 3)); // hardcoded: 0x0000
					$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata,  4, 4));
					$sttsEntriesDataOffset = 8;
					$FrameRateCalculatorArray = array();
					for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
						$atomstructure['time_to_sample_table'][$i]['sample_count']    = getid3_lib::BigEndian2Int(substr($atomdata, $sttsEntriesDataOffset, 4));
						$sttsEntriesDataOffset += 4;
						$atomstructure['time_to_sample_table'][$i]['sample_duration'] = getid3_lib::BigEndian2Int(substr($atomdata, $sttsEntriesDataOffset, 4));
						$sttsEntriesDataOffset += 4;

						if (!empty($ThisFileInfo['quicktime']['time_scale'])) {
							$stts_new_framerate = $ThisFileInfo['quicktime']['time_scale'] / $atomstructure['time_to_sample_table'][$i]['sample_duration'];
							if ($stts_new_framerate <= 60) {
								// some atoms have durations of "1" giving a very large framerate, which probably is not right
								$ThisFileInfo['video']['frame_rate'] = max(@$ThisFileInfo['video']['frame_rate'], $stts_new_framerate);
							}
						}
						//@$FrameRateCalculatorArray[($ThisFileInfo['quicktime']['time_scale'] / $atomstructure['time_to_sample_table'][$i]['sample_duration'])] += $atomstructure['time_to_sample_table'][$i]['sample_count'];
					}
					//$sttsFramesTotal  = 0;
					//$sttsSecondsTotal = 0;
					//foreach ($FrameRateCalculatorArray as $frames_per_second => $frame_count) {
					//	if (($frames_per_second > 60) || ($frames_per_second < 1)) {
					//		// not video FPS information, probably audio information
					//		$sttsFramesTotal  = 0;
					//		$sttsSecondsTotal = 0;
					//		break;
					//	}
					//	$sttsFramesTotal  += $frame_count;
					//	$sttsSecondsTotal += $frame_count / $frames_per_second;
					//}
					//if (($sttsFramesTotal > 0) && ($sttsSecondsTotal > 0)) {
					//	if (($sttsFramesTotal / $sttsSecondsTotal) > @$ThisFileInfo['video']['frame_rate']) {
					//		$ThisFileInfo['video']['frame_rate'] = $sttsFramesTotal / $sttsSecondsTotal;
					//	}
					//}
				//}
				break;


			case 'stss': // Sample Table Sync Sample (key frames) atom
				if ($ParseAllPossibleAtoms) {
					$atomstructure['version']        = getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));
					$atomstructure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atomdata,  1, 3)); // hardcoded: 0x0000
					$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata,  4, 4));
					$stssEntriesDataOffset = 8;
					for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
						$atomstructure['time_to_sample_table'][$i] = getid3_lib::BigEndian2Int(substr($atomdata, $stssEntriesDataOffset, 4));
						$stssEntriesDataOffset += 4;
					}
				}
				break;


			case 'stsc': // Sample Table Sample-to-Chunk atom
				if ($ParseAllPossibleAtoms) {
					$atomstructure['version']        = getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));
					$atomstructure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atomdata,  1, 3)); // hardcoded: 0x0000
					$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata,  4, 4));
					$stscEntriesDataOffset = 8;
					for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
						$atomstructure['sample_to_chunk_table'][$i]['first_chunk']        = getid3_lib::BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4));
						$stscEntriesDataOffset += 4;
						$atomstructure['sample_to_chunk_table'][$i]['samples_per_chunk']  = getid3_lib::BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4));
						$stscEntriesDataOffset += 4;
						$atomstructure['sample_to_chunk_table'][$i]['sample_description'] = getid3_lib::BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4));
						$stscEntriesDataOffset += 4;
					}
				}
				break;


			case 'stsz': // Sample Table SiZe atom
				if ($ParseAllPossibleAtoms) {
					$atomstructure['version']        = getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));
					$atomstructure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atomdata,  1, 3)); // hardcoded: 0x0000
					$atomstructure['sample_size']    = getid3_lib::BigEndian2Int(substr($atomdata,  4, 4));
					$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata,  8, 4));
					$stszEntriesDataOffset = 12;
					if ($atomstructure['sample_size'] == 0) {
						for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
							$atomstructure['sample_size_table'][$i] = getid3_lib::BigEndian2Int(substr($atomdata, $stszEntriesDataOffset, 4));
							$stszEntriesDataOffset += 4;
						}
					}
				}
				break;


			case 'stco': // Sample Table Chunk Offset atom
				if ($ParseAllPossibleAtoms) {
					$atomstructure['version']        = getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));
					$atomstructure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atomdata,  1, 3)); // hardcoded: 0x0000
					$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata,  4, 4));
					$stcoEntriesDataOffset = 8;
					for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
						$atomstructure['chunk_offset_table'][$i] = getid3_lib::BigEndian2Int(substr($atomdata, $stcoEntriesDataOffset, 4));
						$stcoEntriesDataOffset += 4;
					}
				}
				break;


			case 'dref': // Data REFerence atom
				$atomstructure['version']        = getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));
				$atomstructure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atomdata,  1, 3)); // hardcoded: 0x0000
				$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata,  4, 4));
				$drefDataOffset = 8;
				for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
					$atomstructure['data_references'][$i]['size']                    = getid3_lib::BigEndian2Int(substr($atomdata, $drefDataOffset, 4));
					$drefDataOffset += 4;
					$atomstructure['data_references'][$i]['type']                    =               substr($atomdata, $drefDataOffset, 4);
					$drefDataOffset += 4;
					$atomstructure['data_references'][$i]['version']                 = getid3_lib::BigEndian2Int(substr($atomdata,  $drefDataOffset, 1));
					$drefDataOffset += 1;
					$atomstructure['data_references'][$i]['flags_raw']               = getid3_lib::BigEndian2Int(substr($atomdata,  $drefDataOffset, 3)); // hardcoded: 0x0000
					$drefDataOffset += 3;
					$atomstructure['data_references'][$i]['data']                    =               substr($atomdata, $drefDataOffset, ($atomstructure['data_references'][$i]['size'] - 4 - 4 - 1 - 3));
					$drefDataOffset += ($atomstructure['data_references'][$i]['size'] - 4 - 4 - 1 - 3);

					$atomstructure['data_references'][$i]['flags']['self_reference'] = (bool) ($atomstructure['data_references'][$i]['flags_raw'] & 0x001);
				}
				break;


			case 'gmin': // base Media INformation atom
				$atomstructure['version']                = getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));
				$atomstructure['flags_raw']              = getid3_lib::BigEndian2Int(substr($atomdata,  1, 3)); // hardcoded: 0x0000
				$atomstructure['graphics_mode']          = getid3_lib::BigEndian2Int(substr($atomdata,  4, 2));
				$atomstructure['opcolor_red']            = getid3_lib::BigEndian2Int(substr($atomdata,  6, 2));
				$atomstructure['opcolor_green']          = getid3_lib::BigEndian2Int(substr($atomdata,  8, 2));
				$atomstructure['opcolor_blue']           = getid3_lib::BigEndian2Int(substr($atomdata, 10, 2));
				$atomstructure['balance']                = getid3_lib::BigEndian2Int(substr($atomdata, 12, 2));
				$atomstructure['reserved']               = getid3_lib::BigEndian2Int(substr($atomdata, 14, 2));
				break;


			case 'smhd': // Sound Media information HeaDer atom
				$atomstructure['version']                = getid3_lib::BigEndian2Int(substr($atomdata,  0, 1));
				$atomstructure['flags_raw']              = getid3_lib::BigEndian2Int(substr($atomdata,  1, 3)); // hardcoded: 0x0000
				$atomstructure['balance']                = getid3_lib::BigEndian2Int(substr($atomdata,  4, 2));
				$atomstructure['reserved']               = getid3_lib::BigEndian2Int(substr($atomdata,  6, 2));
				break;