public function CopyPreview($extBruType, $extFilePath)
{
$bruType = $extBruType;
$file = $extFilePath;
$flightInfo['bruType'] = $bruType;
$Bru = new Bru();
$bruInfo = $Bru->GetBruInfo($bruType);
$frameLength = $bruInfo['frameLength'];
$stepLength = $bruInfo['stepLength'];
$wordLength = $bruInfo['wordLength'];
$headerLength = $bruInfo['headerLength'];
$headerScr = $bruInfo['headerScr'];
$frameSyncroCode = $bruInfo['frameSyncroCode'];
$previewParams = $bruInfo['previewParams'];
$cycloAp = $Bru->GetBruApCyclo($bruType, -1, -1, -1);
$previewParams = explode(";", $previewParams);
$previewParams = array_map('trim', $previewParams);
$previewCyclo = array();
$cycloApByPrefixes = array();
foreach ($cycloAp as $row => $val) {
if (in_array($val['code'], $previewParams)) {
$previewCyclo[] = $val;
if (!in_array($val['prefix'], $cycloApByPrefixes)) {
$prefixFreqArr[$val['prefix']] = count(explode(",", $val['channel']));
}
$cycloApByPrefixes[$val['prefix']][] = $val;
}
}
$prefixFreqArr = $Bru->GetBruApCycloPrefixFreq($bruType);
unset($Bru);
$Fr = new Frame();
$fileDesc = $Fr->OpenFile($file);
$fileSize = $Fr->GetFileSize($file);
unset($Fr);
if ($headerScr != '' || $headerScr != null) {
eval($headerScr);
}
$startCopyTime = 0;
// to be 0 hours
/*if(isset($flightInfo['startCopyTime']))
{
$startCopyTime = $flightInfo['startCopyTime'] * 1000;
}*/
$Fr = new Frame();
$syncroWordOffset = $Fr->SearchSyncroWord($frameSyncroCode, $headerLength, $file);
$fileDesc = $Fr->OpenFile($file);
$fileSize = $Fr->GetFileSize($file);
$frameNum = 0;
$totalFrameNum = floor(($fileSize - $headerLength - $syncroWordOffset) / $frameLength);
fseek($fileDesc, $syncroWordOffset, SEEK_SET);
$curOffset = $syncroWordOffset;
$algHeap = array();
$data = array();
while ($frameNum < $totalFrameNum && $curOffset < $fileSize) {
$curOffset = ftell($fileDesc);
$frame = $Fr->ReadFrame($fileDesc, $frameLength);
$unpackedFrame = unpack("H*", $frame);
if ($Fr->CheckSyncroWord($frameSyncroCode, $unpackedFrame[1]) === true) {
$splitedFrame = str_split($unpackedFrame[1], $wordLength * 2);
// div 2 because each byte 2 hex digits. $unpackedFrame[1] - dont know why [1], but hexdec($b[$i]) what we need
$apPhisicsByPrefixes = array();
foreach ($cycloApByPrefixes as $prefix => $cycloAp) {
$channelFreq = $prefixFreqArr[$prefix];
$phisicsFrame = $Fr->ConvertFrameToPhisics($splitedFrame, $startCopyTime, $stepLength, $channelFreq, $frameNum, $cycloAp, $algHeap);
$phisicsFrame = $phisicsFrame[0];
// 0 - ap 1 - bp
for ($i = 0; $i < count($cycloAp); $i++) {
$data[$cycloAp[$i]['code']][] = array($phisicsFrame[1], $phisicsFrame[$i + 2]);
//+2 because 0 - frameNum, 1 - time
}
}
$frameNum++;
} else {
$syncroWordOffset = $Fr->SearchSyncroWord($frameSyncroCode, $curOffset, $file);
fseek($fileDesc, $syncroWordOffset, SEEK_SET);
$framesLeft = floor(($fileSize - $syncroWordOffset) / $frameLength);
$totalFrameNum = $frameNum + $framesLeft;
}
}
$Fr->CloseFile($fileDesc);
unset($Fr);
echo json_encode($data);
}
