326 lines
12 KiB
PHP
326 lines
12 KiB
PHP
<?php
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//
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// ZoneMinder web image view file, $Date: 2008-09-29 14:15:13 +0100 (Mon, 29 Sep 2008) $, $Revision: 2640 $
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// Copyright (C) 2001-2008 Philip Coombes
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// Calling sequence: ... /zm/index.php?view=image&path=/monid/path/image.jpg&scale=nnn&width=wwww&height=hhhhh
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//
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// Path is physical path to the image starting at the monitor id
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//
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// Scale is optional and between 1 and 400 (percent),
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// Omitted or 100 = no scaling done, image passed through directly
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// Scaling will increase response time slightly
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//
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// width and height are each optional, ideally supply both, but if only one is supplied the other is calculated
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// These are in pixels
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//
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// If both scale and either width or height are specified, scale is ignored
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//
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if ( !canView('Events') ) {
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$view = 'error';
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return;
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}
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require_once('includes/Event.php');
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require_once('includes/Frame.php');
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// Compatibility for PHP 5.4
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if ( !function_exists('imagescale') ) {
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function imagescale($image, $new_width, $new_height = -1, $mode = 0) {
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$mode; // Not supported
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$new_height = ($new_height == -1) ? imagesy($image) : $new_height;
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$imageNew = imagecreatetruecolor($new_width, $new_height);
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imagecopyresampled($imageNew, $image, 0, 0, 0, 0, (int)$new_width, (int)$new_height, imagesx($image), imagesy($image));
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return $imageNew;
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}
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}
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$errorText = false;
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$filename = '';
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$Frame = null;
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$Event = null;
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$path = null;
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if ( empty($_REQUEST['path']) ) {
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$show = empty($_REQUEST['show']) ? 'capture' : $_REQUEST['show'];
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if ( empty($_REQUEST['fid']) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal('No Frame ID specified');
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return;
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}
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if ( !empty($_REQUEST['eid']) ) {
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$Event = ZM\Event::find_one(array('Id'=>$_REQUEST['eid']));
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if ( !$Event ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal('Event '.$_REQUEST['eid'].' Not found');
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return;
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}
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if ( $_REQUEST['fid'] == 'objdetect' ) {
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$path = $Event->Path().'/objdetect.jpg';
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if ( !file_exists($path) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal("File $path does not exist. Please make sure store_frame_in_zm is enabled in the object detection config");
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}
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$Frame = new ZM\Frame();
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$Frame->Id('objdetect');
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} else if ( $_REQUEST['fid'] == 'alarm' ) {
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# look for first alarmed frame
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$Frame = ZM\Frame::find_one(
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array('EventId'=>$_REQUEST['eid'], 'Type'=>'Alarm'),
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array('order'=>'FrameId ASC'));
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if ( !$Frame ) { # no alarms, get first one I find
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$Frame = ZM\Frame::find_one(array('EventId'=>$_REQUEST['eid']));
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if ( !$Frame ) {
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ZM\Warning('No frame found for event '.$_REQUEST['eid']);
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$Frame = new ZM\Frame();
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$Frame->Delta(1);
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$Frame->FrameId(1);
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}
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}
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$Monitor = $Event->Monitor();
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if ( $Event->SaveJPEGs() & 1 ) {
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# If we store Frames as jpgs, then we don't store an alarmed snapshot
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$path = $Event->Path().'/'.sprintf('%0'.ZM_EVENT_IMAGE_DIGITS.'d', $Frame->FrameId()).'-'.$show.'.jpg';
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} else {
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$path = $Event->Path().'/alarm.jpg';
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}
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} else if ( $_REQUEST['fid'] == 'snapshot' ) {
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$Frame = ZM\Frame::find_one(array('EventId'=>$_REQUEST['eid'], 'Score'=>$Event->MaxScore()));
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if ( !$Frame )
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$Frame = ZM\Frame::find_one(array('EventId'=>$_REQUEST['eid']));
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if ( !$Frame ) {
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ZM\Warning('No frame found for event ' . $_REQUEST['eid']);
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$Frame = new ZM\Frame();
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$Frame->Delta(1);
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if ( $Event->SaveJPEGs() & 1 ) {
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$Frame->FrameId(0);
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} else {
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$Frame->FrameId('snapshot');
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}
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}
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$Monitor = $Event->Monitor();
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if ( $Event->SaveJPEGs() & 1 ) {
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# If we store Frames as jpgs, then we don't store a snapshot
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$path = $Event->Path().'/'.sprintf('%0'.ZM_EVENT_IMAGE_DIGITS.'d', $Frame->FrameId()).'-'.$show.'.jpg';
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} else {
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$path = $Event->Path().'/snapshot.jpg';
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}
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} else {
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$Frame = ZM\Frame::find_one(array('EventId'=>$_REQUEST['eid'], 'FrameId'=>$_REQUEST['fid']));
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if ( ! $Frame ) {
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$previousBulkFrame = dbFetchOne(
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'SELECT * FROM Frames WHERE EventId=? AND FrameId < ? ORDER BY FrameID DESC LIMIT 1',
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NULL, array($_REQUEST['eid'], $_REQUEST['fid'])
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);
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$nextBulkFrame = dbFetchOne(
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'SELECT * FROM Frames WHERE EventId=? AND FrameId > ? ORDER BY FrameID ASC LIMIT 1',
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NULL, array($_REQUEST['eid'], $_REQUEST['fid'])
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);
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if ( $previousBulkFrame and $nextBulkFrame ) {
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$Frame = new ZM\Frame($previousBulkFrame);
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$Frame->FrameId($_REQUEST['fid']);
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$percentage = ($Frame->FrameId() - $previousBulkFrame['FrameId']) / ($nextBulkFrame['FrameId'] - $previousBulkFrame['FrameId']);
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$Frame->Delta($previousBulkFrame['Delta'] + floor( 100* ( $nextBulkFrame['Delta'] - $previousBulkFrame['Delta'] ) * $percentage )/100);
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ZM\Logger::Debug("Got virtual frame from Bulk Frames previous delta: " . $previousBulkFrame['Delta'] . " + nextdelta:" . $nextBulkFrame['Delta'] . ' - ' . $previousBulkFrame['Delta'] . ' * ' . $percentage );
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} else {
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ZM\Fatal('No Frame found for event('.$_REQUEST['eid'].') and frame id('.$_REQUEST['fid'].')');
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}
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}
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// Frame can be non-existent. We have Bulk frames. So now we should try to load the bulk frame
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$path = $Event->Path().'/'.sprintf('%0'.ZM_EVENT_IMAGE_DIGITS.'d',$Frame->FrameId()).'-'.$show.'.jpg';
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ZM\Logger::Debug("Path: $path");
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}
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} else {
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# If we are only specifying fid, then the fid must be the primary key into the frames table. But when the event is specified, then it is the frame #
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$Frame = ZM\Frame::find_one(array('Id'=>$_REQUEST['fid']));
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if ( !$Frame ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal('Frame ' . $_REQUEST['fid'] . ' Not Found');
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return;
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}
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$Event = ZM\Event::find_one(array('Id'=>$Frame->EventId()));
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if ( !$Event ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal('Event ' . $Frame->EventId() . ' Not Found');
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return;
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}
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$path = $Event->Path().'/'.sprintf('%0'.ZM_EVENT_IMAGE_DIGITS.'d',$Frame->FrameId()).'-'.$show.'.jpg';
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} # end if have eid
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if ( !file_exists($path) ) {
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ZM\Logger::Debug("$path does not exist");
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# Generate the frame JPG
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if ( ($show == 'capture') and $Event->DefaultVideo() ) {
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if ( !file_exists($Event->Path().'/'.$Event->DefaultVideo()) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal("Can't create frame images from video because there is no video file for this event at (".$Event->Path().'/'.$Event->DefaultVideo() );
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}
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$command ='ffmpeg -ss '. $Frame->Delta() .' -i '.$Event->Path().'/'.$Event->DefaultVideo().' -frames:v 1 '.$path;
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#$command ='ffmpeg -ss '. $Frame->Delta() .' -i '.$Event->Path().'/'.$Event->DefaultVideo().' -vf "select=gte(n\\,'.$Frame->FrameId().'),setpts=PTS-STARTPTS" '.$path;
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#$command ='ffmpeg -v 0 -i '.$Storage->Path().'/'.$Event->Path().'/'.$Event->DefaultVideo().' -vf "select=gte(n\\,'.$Frame->FrameId().'),setpts=PTS-STARTPTS" '.$path;
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ZM\Logger::Debug("Running $command");
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$output = array();
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$retval = 0;
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exec( $command, $output, $retval );
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ZM\Logger::Debug("Command: $command, retval: $retval, output: " . implode("\n", $output));
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if ( ! file_exists( $path ) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal('Can\'t create frame images from video for this event '.$Event->DefaultVideo() );
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}
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# Generating an image file will use up more disk space, so update the Event record.
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$Event->DiskSpace(null);
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$Event->save();
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} else {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal("Can't create frame $show images from video because there is no video file for this event at ".
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$Event->Path().'/'.$Event->DefaultVideo() );
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}
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} # end if ! file_exists($path)
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} else {
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ZM\Warning('Loading images by path is deprecated');
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$dir_events = realpath(ZM_DIR_EVENTS);
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$path = realpath($dir_events . '/' . $_REQUEST['path']);
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$pos = strpos($path, $dir_events);
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if ( $pos == 0 && $pos !== false ) {
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if ( ! empty($user['MonitorIds']) ) {
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$imageOk = false;
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$pathMonId = substr($path, 0, strspn($path, '1234567890'));
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foreach ( preg_split('/["\'\s]*,["\'\s]*/', $user['MonitorIds']) as $monId ) {
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if ( $pathMonId == $monId ) {
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$imageOk = true;
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break;
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}
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}
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if ( !$imageOk )
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$errorText = 'No image permissions';
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}
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} else {
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$errorText = 'Invalid image path';
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}
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if ( !file_exists($path) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Fatal("Image not found at $path");
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}
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}
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# we now load the actual image to send
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$scale = 0;
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if ( !empty($_REQUEST['scale']) ) {
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if ( is_numeric($_REQUEST['scale']) ) {
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$x = $_REQUEST['scale'];
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if ( $x >= 1 and $x <= 400 )
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$scale = $x;
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}
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}
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$width = 0;
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if ( !empty($_REQUEST['width']) ) {
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if ( is_numeric($_REQUEST['width']) ) {
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$x = $_REQUEST['width'];
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if ( $x >= 10 and $x <= 8000 )
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$width = $x;
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}
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}
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$height = 0;
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if ( !empty($_REQUEST['height']) ) {
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if ( is_numeric($_REQUEST['height']) ) {
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$x = $_REQUEST['height'];
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if ( $x >= 10 and $x <= 8000 )
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$height = $x;
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}
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}
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if ( $errorText ) {
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ZM\Error($errorText);
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} else {
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header('Content-type: image/jpeg');
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if ( ( $scale==0 || $scale==100 ) && ($width==0) && ($height==0) ) {
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# This is so that Save Image As give a useful filename
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if ( $Event ) {
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$filename = $Event->MonitorId().'_'.$Event->Id().'_'.$Frame->FrameId().'.jpg';
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header('Content-Disposition: inline; filename="' . $filename . '"');
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}
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if ( !readfile($path) ) {
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ZM\Error('No bytes read from '. $path);
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}
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} else {
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ZM\Logger::Debug("Doing a scaled image: scale($scale) width($width) height($height)");
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$i = 0;
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if ( ! ( $width && $height ) ) {
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$i = imagecreatefromjpeg($path);
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$oldWidth = imagesx($i);
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$oldHeight = imagesy($i);
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if ( $width == 0 && $height == 0 ) { // scale has to be set to get here with both zero
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$width = $oldWidth * $scale / 100.0;
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$height= $oldHeight * $scale / 100.0;
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} elseif ( $width == 0 && $height != 0 ) {
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$width = ($height * $oldWidth) / $oldHeight;
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} elseif ( $width != 0 && $height == 0 ) {
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$height = ($width * $oldHeight) / $oldWidth;
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ZM\Logger::Debug("Figuring out height using width: $height = ($width * $oldHeight) / $oldWidth");
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}
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if ( $width == $oldWidth && $height == $oldHeight ) {
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ZM\Warning('No change to width despite scaling.');
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}
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}
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# Slight optimisation, thumbnails always specify width and height, so we can cache them.
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$scaled_path = preg_replace('/\.jpg$/', "-${width}x${height}.jpg", $path);
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if ( $Event ) {
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$filename = $Event->MonitorId().'_'.$Event->Id().'_'.$Frame->FrameId()."-${width}x${height}.jpg";
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header('Content-Disposition: inline; filename="' . $filename . '"');
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}
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if ( !( file_exists($scaled_path) and readfile($scaled_path) ) ) {
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ZM\Logger::Debug("Cached scaled image does not exist at $scaled_path or is no good.. Creating it");
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ob_start();
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if ( !$i )
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$i = imagecreatefromjpeg($path);
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$iScale = imagescale($i, $width, $height);
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imagejpeg($iScale);
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imagedestroy($i);
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imagedestroy($iScale);
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$scaled_jpeg_data = ob_get_contents();
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file_put_contents($scaled_path, $scaled_jpeg_data);
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echo $scaled_jpeg_data;
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} else {
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ZM\Logger::Debug("Sending $scaled_path");
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$bytes = readfile($scaled_path);
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if ( !$bytes ) {
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ZM\Error('No bytes read from '. $scaled_path);
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} else {
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ZM\Logger::Debug("$bytes sent");
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}
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}
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}
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}
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exit();
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