201 lines
6.4 KiB
PHP
201 lines
6.4 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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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{
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$view = "error";
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return;
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}
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require_once('includes/Storage.php');
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require_once('includes/Event.php');
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require_once('includes/Frame.php');
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header( 'Content-type: image/jpeg' );
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// Compatibility for PHP 5.4
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if (!function_exists('imagescale'))
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{
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function imagescale($image, $new_width, $new_height = -1, $mode = 0)
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{
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$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 $imageNew;
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}
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}
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$Storage = NULL;
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$errorText = false;
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if ( empty($_REQUEST['path']) )
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{
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if ( ! empty($_REQUEST['fid']) ) {
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if ( ! empty($_REQUEST['eid'] ) ) {
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$Event = new Event( $_REQUEST['eid'] );
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$Frame = Frame::find_one( array( 'EventId' => $_REQUEST['eid'], 'FrameId' => $_REQUEST['fid'] ) );
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if ( ! $Frame ) {
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Fatal("No Frame found for event(".$_REQUEST['eid'].") and frame id(".$_REQUEST['fid'].")");
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}
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$Storage = $Event->Storage();
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$path = $Event->Path().'/'.sprintf("%'.0".ZM_EVENT_IMAGE_DIGITS.'d',$_REQUEST['fid']).'-capture.jpg';
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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 = new Frame( $_REQUEST['fid'] );
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$Event = new Event( $Frame->EventId() );
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$Storage = $Event->Storage();
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$path = $Event->Path().'/'.sprintf("%'.0".ZM_EVENT_IMAGE_DIGITS.'d',$Frame->FrameId()).'-capture.jpg';
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}
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} else {
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$errorText = "No image path";
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}
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if ( ! file_exists( $path ) ) {
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# Generate the frame JPG
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if ( $Event->DefaultVideo() ) {
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$command ='ffmpeg -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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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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Debug("Retval: $retval, output: " . implode("\n", $output));
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} else {
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Fatal("Can't create frame images from video becuase there is no video file for this event (".$Event->DefaultVideo() );
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}
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}
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}
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else
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{
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$Storage = new Storage();
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$path = $_REQUEST['path'];
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if ( !empty($user['MonitorIds']) )
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{
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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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{
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if ( $pathMonId == $monId )
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{
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$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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}
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$scale=0;
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if( !empty($_REQUEST['scale']) )
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if (is_numeric($_REQUEST['scale']))
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{
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$x = $_REQUEST['scale'];
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if($x >= 1 and $x <= 400)
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$scale=$x;
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}
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$width=0;
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if( !empty($_REQUEST['width']) )
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if (is_numeric($_REQUEST['width']))
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{
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$x = $_REQUEST['width'];
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if($x >= 10 and $x <= 8000)
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$width=$x;
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}
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$height=0;
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if( !empty($_REQUEST['height']) )
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if (is_numeric($_REQUEST['height']))
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{
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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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if ( $errorText ) {
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Error( $errorText );
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} else {
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if ( ( $scale==0 || $scale==100 ) && $width==0 && $height==0 ) {
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if ( ! readfile( $path ) ) {
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Error("No bytes read from ". $path );
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}
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} else {
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Debug("Doing a scaled image: scale($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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}
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if ( $width == $oldWidth && $height == $oldHeight) {
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Warning( "No change to width despite scaling." );
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}
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}
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# Slight optimisation, thumbnails always specify width and height, so we can cache them.
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$scaled_path = preg_replace('/\.jpg$/', "-${width}x${height}.jpg", $path );
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if ( file_exists( $scaled_path ) ) {
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Debug( "Using cached scaled image at $scaled_path.");
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if ( ! readfile( $scaled_path ) ) {
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Error("No bytes read from scaled image". $scaled_path );
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}
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} else {
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Debug( "Cached scaled image does not exist at $scaled_path. 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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ob_end_clean();
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echo $scaled_jpeg_data;
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}
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}
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}
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?>
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