117 lines
3.2 KiB
PHP
117 lines
3.2 KiB
PHP
<?php
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//
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// ZoneMinder web video view file
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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=video&event_id=123
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//
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// event_id is the id of the event to view
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//
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// Does not support scaling at this time.
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//
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if ( !canView('Events') ) {
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$view = 'error';
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return;
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}
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# in index.php we do ob_end_start but there can be no output before view_video and we often don't have enough ram to buffer the content.
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ob_end_clean();
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require_once('includes/Event.php');
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$errorText = false;
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$path = '';
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$Event = null;
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if ( ! empty($_REQUEST['eid']) ) {
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$Event = new ZM\Event($_REQUEST['eid']);
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$path = $Event->Path().'/'.$Event->DefaultVideo();
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} else if ( ! empty($_REQUEST['event_id']) ) {
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$Event = new ZM\Event($_REQUEST['event_id']);
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$path = $Event->Path().'/'.$Event->DefaultVideo();
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} else {
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$errorText = 'No video path';
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}
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if ( $errorText ) {
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ZM\Error($errorText);
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header('HTTP/1.0 404 Not Found');
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die();
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}
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if ( ! ($fh = @fopen($path, 'rb') ) ) {
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ZM\Error('Can\'t open video at '.$path);
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header('HTTP/1.0 404 Not Found');
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die();
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}
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$size = filesize($path);
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$begin = 0;
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$end = $size-1;
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$length = $size;
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if ( isset($_SERVER['HTTP_RANGE']) ) {
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ZM\Debug('Using Range '.$_SERVER['HTTP_RANGE']);
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if ( preg_match('/bytes=\h*(\d+)-(\d*)[\D.*]?/i', $_SERVER['HTTP_RANGE'], $matches) ) {
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$begin = intval($matches[1]);
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if ( !empty($matches[2]) ) {
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$end = intval($matches[2]);
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}
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$length = $end - $begin + 1;
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ZM\Debug("Using Range $begin $end size: $size, length: $length");
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}
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} # end if HTTP_RANGE
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header('Content-type: video/mp4');
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header('Accept-Ranges: bytes');
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header('Content-Length: '.$length);
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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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header('Content-Disposition: inline; filename="' . $Event->DefaultVideo() . '"');
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} else {
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header('Content-Disposition: inline;');
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}
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if ( $begin > 0 || $end < $size-1 ) {
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header('HTTP/1.0 206 Partial Content');
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header("Content-Range: bytes $begin-$end/$size");
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header("Content-Transfer-Encoding: binary\n");
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header('Connection: close');
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} else {
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header('HTTP/1.0 200 OK');
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}
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// Apparently without these we get a few extra bytes of output at the end...
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flush();
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$cur = $begin;
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fseek($fh, $begin, 0);
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while ( $length && ( !feof($fh) ) && ( connection_status() == 0 ) ) {
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$amount = min(1024*16, $length);
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print fread($fh, $amount);
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$length -= $amount;
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# Why introduce a speed limit?
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#usleep(100);
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flush();
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}
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fclose($fh);
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exit();
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