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zoneminder/web/includes/Event.php

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PHP
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<?php
class Event {
public function __construct( $IdOrRow = null ) {
$row = NULL;
if ( $IdOrRow ) {
if ( is_integer( $IdOrRow ) or is_numeric( $IdOrRow ) ) {
$row = dbFetchOne( 'SELECT *,unix_timestamp(StartTime) as Time FROM Events WHERE Id=?', NULL, array( $IdOrRow ) );
if ( ! $row ) {
Error('Unable to load Event record for Id=' . $IdOrRow );
}
} elseif ( is_array( $IdOrRow ) ) {
$row = $IdOrRow;
} else {
$backTrace = debug_backtrace();
$file = $backTrace[1]['file'];
$line = $backTrace[1]['line'];
Error("Unknown argument passed to Event Constructor from $file:$line)");
Error("Unknown argument passed to Event Constructor ($IdOrRow)");
return;
}
if ( $row ) {
foreach ($row as $k => $v) {
$this->{$k} = $v;
}
} else {
$backTrace = debug_backtrace();
$file = $backTrace[1]['file'];
$line = $backTrace[1]['line'];
Error('No row for Event ' . $IdOrRow . " from $file:$line");
}
} # end if isset($IdOrRow)
} // end function __construct
public function Storage( $new = null ) {
if ( $new ) {
$this->{'Storage'} = $new;
}
if ( ! ( array_key_exists( 'Storage', $this ) and $this->{'Storage'} ) ) {
$this->{'Storage'} = new Storage( isset($this->{'StorageId'}) ? $this->{'StorageId'} : NULL );
}
return $this->{'Storage'};
}
public function Monitor() {
return new Monitor( isset($this->{'MonitorId'}) ? $this->{'MonitorId'} : NULL );
}
public function __call( $fn, array $args){
if ( array_key_exists( $fn, $this ) ) {
return $this->{$fn};
#array_unshift($args, $this);
#call_user_func_array( $this->{$fn}, $args);
}
}
public function Time() {
if ( ! isset( $this->{'Time'} ) ) {
$this->{'Time'} = strtotime($this->{'StartTime'});
}
return $this->{'Time'};
}
public function Path() {
$Storage = $this->Storage();
return $Storage->Path().'/'.$this->Relative_Path();
}
public function Relative_Path() {
$event_path = '';
if ( ZM_USE_DEEP_STORAGE ) {
$event_path = $this->{'MonitorId'} .'/'.strftime( '%y/%m/%d/%H/%M/%S', $this->Time()) ;
} else {
$event_path = $this->{'MonitorId'} .'/'.$this->{'Id'};
}
return( $event_path );
} // end function Relative_Path()
public function Link_Path() {
if ( ZM_USE_DEEP_STORAGE ) {
return $this->{'MonitorId'} .'/'.strftime( '%y/%m/%d/.', $this->Time()).$this->{'Id'};
}
Error('Calling Link_Path when not using deep storage');
return '';
}
public function delete() {
# This wouldn't work with foreign keys
dbQuery( 'DELETE FROM Events WHERE Id = ?', array($this->{'Id'}) );
if ( !ZM_OPT_FAST_DELETE ) {
dbQuery( 'DELETE FROM Stats WHERE EventId = ?', array($this->{'Id'}) );
dbQuery( 'DELETE FROM Frames WHERE EventId = ?', array($this->{'Id'}) );
if ( ZM_USE_DEEP_STORAGE ) {
# Assumption: All events have a start time
$start_date = date_parse( $this->{'StartTime'} );
if ( ! $start_date ) {
Error('Unable to parse start time for event ' . $this->{'Id'} . ' not deleting files.' );
return;
}
$start_date['year'] = $start_date['year'] % 100;
# So this is because ZM creates a link under the day pointing to the time that the event happened.
$link_path = $this->Link_Path();
if ( ! $link_path ) {
Error('Unable to determine link path for event ' . $this->{'Id'} . ' not deleting files.' );
return;
}
$Storage = $this->Storage();
$eventlink_path = $Storage->Path().'/'.$link_path;
if ( $id_files = glob( $eventlink_path ) ) {
if ( ! $eventPath = readlink($id_files[0]) ) {
Error("Unable to read link at $id_files[0]");
return;
}
# I know we are using arrays here, but really there can only ever be 1 in the array
$eventPath = preg_replace( '/\.'.$this->{'Id'}.'$/', $eventPath, $id_files[0] );
deletePath( $eventPath );
deletePath( $id_files[0] );
$pathParts = explode( '/', $eventPath );
for ( $i = count($pathParts)-1; $i >= 2; $i-- ) {
$deletePath = join( '/', array_slice( $pathParts, 0, $i ) );
if ( !glob( $deletePath."/*" ) ) {
deletePath( $deletePath );
}
}
} else {
Warning( "Found no event files under $eventlink_path" );
} # end if found files
} else {
$eventPath = $this->Path();
deletePath( $eventPath );
} # USE_DEEP_STORAGE OR NOT
} # ! ZM_OPT_FAST_DELETE
} # end Event->delete
public function getStreamSrc( $args=array(), $querySep='&amp;' ) {
if ( $this->{'DefaultVideo'} and $args['mode'] != 'jpeg' ) {
return ( ZM_BASE_PATH != '/' ? ZM_BASE_PATH : '' ).'/index.php?view=view_video&eid='.$this->{'Id'};
}
$streamSrc = ZM_BASE_URL.ZM_PATH_ZMS;
$args['source'] = 'event';
$args['event'] = $this->{'Id'};
if ( ZM_OPT_USE_AUTH ) {
if ( ZM_AUTH_RELAY == 'hashed' ) {
$args['auth'] = generateAuthHash( ZM_AUTH_HASH_IPS );
} elseif ( ZM_AUTH_RELAY == 'plain' ) {
$args['user'] = $_SESSION['username'];
$args['pass'] = $_SESSION['password'];
} elseif ( ZM_AUTH_RELAY == "none" ) {
$args['user'] = $_SESSION['username'];
}
}
if ( ( (!isset($args['mode'])) or ( $args['mode'] != 'single' ) ) && !empty($GLOBALS['connkey']) ) {
$args['connkey'] = $GLOBALS['connkey'];
}
if ( ZM_RAND_STREAM ) {
$args['rand'] = time();
}
$streamSrc .= '?'.http_build_query( $args,'', $querySep );
return( $streamSrc );
} // end function getStreamSrc
function DiskSpace() {
if ( null === $this->{'DiskSpace'} ) {
$this->{'DiskSpace'} = folder_size( $this->Path() );
dbQuery( 'UPDATE Events SET DiskSpace=? WHERE Id=?', array( $this->{'DiskSpace'}, $this->{'Id'} ) );
}
return $this->{'DiskSpace'};
}
function createListThumbnail( $overwrite=false ) {
# Load the frame with the highest score to use as a thumbnail
if ( !($frame = dbFetchOne( 'SELECT * FROM Frames WHERE EventId=? AND Score=? ORDER BY FrameId LIMIT 1', NULL, array( $this->{'Id'}, $this->{'MaxScore'} ) )) ) {
Error("Unable to find a Frame matching max score " . $this->{'MaxScore'} . ' for event ' . $this->{'Id'} );
// FIXME: What if somehow the db frame was lost or score was changed? Should probably try another search for any frame.
return( false );
}
$frameId = $frame['FrameId'];
if ( ZM_WEB_LIST_THUMB_WIDTH ) {
$thumbWidth = ZM_WEB_LIST_THUMB_WIDTH;
$scale = (SCALE_BASE*ZM_WEB_LIST_THUMB_WIDTH)/$this->{'Width'};
$thumbHeight = reScale( $this->{'Height'}, $scale );
} elseif ( ZM_WEB_LIST_THUMB_HEIGHT ) {
$thumbHeight = ZM_WEB_LIST_THUMB_HEIGHT;
$scale = (SCALE_BASE*ZM_WEB_LIST_THUMB_HEIGHT)/$this->{'Height'};
$thumbWidth = reScale( $this->{'Width'}, $scale );
} else {
Fatal( "No thumbnail width or height specified, please check in Options->Web" );
}
$imageData = $this->getImageSrc( $frame, $scale, false, $overwrite );
if ( ! $imageData ) {
return ( false );
}
$thumbData = $frame;
$thumbData['Path'] = $imageData['thumbPath'];
$thumbData['Width'] = (int)$thumbWidth;
$thumbData['Height'] = (int)$thumbHeight;
return( $thumbData );
} // end function createListThumbnail
// frame is an array representing the db row for a frame.
function getImageSrc( $frame, $scale=SCALE_BASE, $captureOnly=false, $overwrite=false ) {
$Storage = new Storage( isset($this->{'StorageId'}) ? $this->{'StorageId'} : NULL );
$Event = $this;
$eventPath = $Event->Path();
if ( $frame and ! is_array($frame) ) {
# Must be an Id
Debug("Assuming that $frame is an Id");
$frame = array( 'FrameId'=>$frame, 'Type'=>'' );
}
if ( ( ! $frame ) and file_exists( $eventPath.'/snapshot.jpg' ) ) {
# No frame specified, so look for a snapshot to use
$captImage = 'snapshot.jpg';
Debug("Frame not specified, using snapshot");
} else {
$captImage = sprintf( '%0'.ZM_EVENT_IMAGE_DIGITS.'d-analyze.jpg', $frame['FrameId'] );
if ( ! file_exists( $eventPath.'/'.$captImage ) ) {
$captImage = sprintf( '%0'.ZM_EVENT_IMAGE_DIGITS.'d-capture.jpg', $frame['FrameId'] );
if ( ! file_exists( $eventPath.'/'.$captImage ) ) {
# Generate the frame JPG
if ( $Event->DefaultVideo() ) {
$videoPath = $eventPath.'/'.$Event->DefaultVideo();
if ( ! file_exists( $videoPath ) ) {
Error("Event claims to have a video file, but it does not seem to exist at $videoPath" );
return '';
}
#$command ='ffmpeg -v 0 -i '.$videoPath.' -vf "select=gte(n\\,'.$frame['FrameId'].'),setpts=PTS-STARTPTS" '.$eventPath.'/'.$captImage;
$command ='ffmpeg -ss '. $frame['Delta'] .' -i '.$videoPath.' -frames:v 1 '.$eventPath.'/'.$captImage;
Logger::Debug( "Running $command" );
$output = array();
$retval = 0;
exec( $command, $output, $retval );
Logger::Debug("Retval: $retval, output: " . implode("\n", $output));
} else {
Error("Can't create frame images from video becuase there is no video file for this event (".$Event->DefaultVideo() );
}
} // end if capture file exists
} // end if analyze file exists
}
$captPath = $eventPath.'/'.$captImage;
if ( ! file_exists( $captPath ) ) {
Error( "Capture file does not exist at $captPath" );
return '';
}
$thumbCaptPath = ZM_DIR_IMAGES.'/'.$this->{'Id'}.'-'.$captImage;
//echo "CI:$captImage, CP:$captPath, TCP:$thumbCaptPath<br>";
$analImage = sprintf( '%0'.ZM_EVENT_IMAGE_DIGITS.'d-analyse.jpg', $frame['FrameId'] );
$analPath = $eventPath.'/'.$analImage;
$thumbAnalPath = ZM_DIR_IMAGES.'/'.$this->{'Id'}.'-'.$analImage;
//echo "AI:$analImage, AP:$analPath, TAP:$thumbAnalPath<br>";
$alarmFrame = $frame['Type']=='Alarm';
$hasAnalImage = $alarmFrame && file_exists( $analPath ) && filesize( $analPath );
$isAnalImage = $hasAnalImage && !$captureOnly;
if ( !ZM_WEB_SCALE_THUMBS || $scale >= SCALE_BASE || !function_exists( 'imagecreatefromjpeg' ) ) {
$imagePath = $thumbPath = $isAnalImage?$analPath:$captPath;
$imageFile = $imagePath;
$thumbFile = $thumbPath;
} else {
if ( version_compare( phpversion(), '4.3.10', '>=') )
$fraction = sprintf( '%.3F', $scale/SCALE_BASE );
else
$fraction = sprintf( '%.3f', $scale/SCALE_BASE );
$scale = (int)round( $scale );
$thumbCaptPath = preg_replace( '/\.jpg$/', "-$scale.jpg", $thumbCaptPath );
$thumbAnalPath = preg_replace( '/\.jpg$/', "-$scale.jpg", $thumbAnalPath );
if ( $isAnalImage ) {
$imagePath = $analPath;
$thumbPath = $thumbAnalPath;
} else {
$imagePath = $captPath;
$thumbPath = $thumbCaptPath;
}
$thumbFile = $thumbPath;
if ( $overwrite || ! file_exists( $thumbFile ) || ! filesize( $thumbFile ) ) {
// Get new dimensions
list( $imageWidth, $imageHeight ) = getimagesize( $imagePath );
$thumbWidth = $imageWidth * $fraction;
$thumbHeight = $imageHeight * $fraction;
// Resample
$thumbImage = imagecreatetruecolor( $thumbWidth, $thumbHeight );
$image = imagecreatefromjpeg( $imagePath );
imagecopyresampled( $thumbImage, $image, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $imageWidth, $imageHeight );
if ( !imagejpeg( $thumbImage, $thumbPath ) )
Error( "Can't create thumbnail '$thumbPath'" );
}
} # Create thumbnails
$imageData = array(
'eventPath' => $eventPath,
'imagePath' => $imagePath,
'thumbPath' => $thumbPath,
'imageFile' => $imagePath,
'thumbFile' => $thumbFile,
'imageClass' => $alarmFrame?'alarm':'normal',
'isAnalImage' => $isAnalImage,
'hasAnalImage' => $hasAnalImage,
);
return( $imageData );
}
public static function find_all( $parameters = null, $options = null ) {
$filters = array();
$sql = 'SELECT * FROM Events ';
$values = array();
if ( $parameters ) {
$fields = array();
$sql .= 'WHERE ';
foreach ( $parameters as $field => $value ) {
if ( $value == null ) {
$fields[] = $field.' IS NULL';
} else if ( is_array( $value ) ) {
$func = function(){return '?';};
$fields[] = $field.' IN ('.implode(',', array_map( $func, $value ) ). ')';
$values += $value;
} else {
$fields[] = $field.'=?';
$values[] = $value;
}
}
$sql .= implode(' AND ', $fields );
}
if ( $options and isset($options['order']) ) {
$sql .= ' ORDER BY ' . $options['order'];
}
$result = dbQuery($sql, $values);
$results = $result->fetchALL(PDO::FETCH_CLASS | PDO::FETCH_PROPS_LATE, 'Event');
foreach ( $results as $row => $obj ) {
$filters[] = $obj;
}
return $filters;
}
} # end class
?>
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