2010-11-04 15:07:40 +08:00
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<?php
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2010-11-11 06:20:29 +08:00
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/*
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* functions.php is created by Jai Dhar, FPS-Tech, for use with eyeZm
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* iPhone application. This is not intended for use with any other applications,
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* although source-code is provided under GPL.
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*
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* For questions, please email jdhar@eyezm.com (http://www.eyezm.com)
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*
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*/
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/* There appears to be some discrepancy btw. 1.24.1/2 and .3 for EventPaths, to escape them here */
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2010-11-07 12:05:16 +08:00
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function getEventPathSafe($event)
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{
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if (strcmp(ZM_VERSION, "1.24.3") == 0) {
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$ret = ZM_DIR_EVENTS."/".getEventPath($event);
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} else {
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$ret = getEventPath($event);
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}
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return $ret;
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}
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2010-11-11 06:20:29 +08:00
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/* Returns defval if varname is not set, otherwise return varname */
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2010-11-06 07:41:09 +08:00
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function getset($varname, $defval)
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{
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if (isset($_GET[$varname])) return $_GET[$varname];
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return $defval;
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}
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2010-11-04 15:07:40 +08:00
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function xml_header()
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{
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header ("content-type: text/xml");
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echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
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}
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function xml_tag_val($tag, $val)
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{
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echo "<".$tag.">".$val."</".$tag.">";
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//echo "<".$tag.">".$val."</".$tag."><br>";
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}
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function xml_tag_sec($tag, $open)
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{
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if ($open) $tok = "<";
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else $tok = "</";
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echo $tok.$tag.">";
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}
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2010-11-05 03:25:34 +08:00
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function xhtmlHeaders( $file, $title )
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{
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?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<style type="text/css">
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body {
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border: 0px solid;
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margin: 0px;
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padding: 0px;
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}
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</style>
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2010-11-06 00:48:57 +08:00
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<script type="text/javascript">
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2010-11-11 06:20:29 +08:00
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</script>
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</head>
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<?php
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}
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/** Returns whether necessary components for H264 streaming
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* are present */
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function canStream264() {
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/* Make sure segmenter exists */
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$res = shell_exec("which segmenter");
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if ($res == "") {
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error_log("H264 Requested, but segmenter not installed.");
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return 0;
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}
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/* Check for zmstreamer */
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$res = shell_exec("which zmstreamer");
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if ($res == "") {
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error_log("ZMSTREAMER not installed, cannot stream H264");
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return 0;
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}
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/* Check for ffmpeg */
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$res = shell_exec("which ffmpeg");
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if ($res == "") {
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error_log("ZMSTREAMER not installed, cannot stream H264");
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return 0;
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}
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/* Check for libx264 support */
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$res = shell_exec("ffmpeg -codecs 2> /dev/null | grep libx264");
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if ($res == "") {
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error_log("FFMPEG doesn't support libx264");
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return 0;
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}
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trigger_error("Determined can stream for H264", E_USER_NOTICE);
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return 1;
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}
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/** Returns the temp directory for H264 encoding */
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function getTempDir()
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{
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/* Assume that the directory structure is <base>/skins/xml/views */
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return dirname(__FILE__)."/../../../temp";
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}
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/** Returns the name of the m3u8 playlist based on monitor */
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function m3u8fname($monitor) {
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return "stream_".$monitor.".m3u8";
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}
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/** Erases the M3u8 and TS file names for a given monitor */
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function eraseH264Files($monitor) {
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/* Remove wdir/.m3u8 and wdir/sample_<mon>*.ts */
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shell_exec("rm -f ".getTempDir()."/".m3u8fname($monitor)." ".getTempDir()."/sample_".$monitor."*.ts");
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}
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function kill264proc($monitor) {
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$pid = trim(shell_exec("pgrep -f -x \"zmstreamer -m ".$monitor."\""));
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if ($pid == "") {
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trigger_error("No PID found for ZMStreamer to kill", E_USER_NOTICE);
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} else {
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shell_exec("kill -9 ".$pid);
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trigger_error("Killed process ".$pid." for Monitor ".$monitor);
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}
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}
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/** Return the command-line shell function to setup H264 stream */
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function stream264fn ($mid, $width, $height, $br) {
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$cdir = "./temp";
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$zmstrm = "zmstreamer -m ".$mid.(XML_H264_DEBUG?"":" 2> /dev/null");
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$seg = "segmenter - ".XML_SEG_DURATION." ".$cdir."/sample_".$mid." ".$cdir."/".m3u8fname($mid)." ../".(XML_H264_DEBUG?"":" 2> /dev/null");
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$ffparms = "-f mpegts -analyzeduration 0 -acodec copy -s ".$width."x".$height." -vcodec libx264 -b ".$br." -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -subq 5 -trellis 1 -refs 1 -coder 0 -me_range 16 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 200k -maxrate ".$br." -bufsize ".$br." -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 30 -aspect ".$width.":".$height." -g 30 -analyzeduration 0 -async 2 -".(XML_H264_DEBUG?"":" 2> /dev/null");
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$url = $zmstrm . " | ffmpeg -t ".XML_H264_MAX_DURATION." -analyzeduration 0 -i - ". $ffparms . " | " . $seg;
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return "nohup ".$url." & echo $!";
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}
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/** Generate the web-page presented to the viewer when using H264 */
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function h264vidHtml($width, $height, $monitor, $br) {
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$ajaxUrl = "?view=actions&action=spawn264&width=".$width."&height=".$height."&monitor=".$monitor."&br=".$br;
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/* Call these two directly to bypass server blocking issues */
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$ajax2Url = "./skins/xml/views/actions.php?action=chk264&monitor=".$monitor;
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$ajax3Url = "./skins/xml/views/actions.php?action=kill264&monitor=".$monitor;
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?>
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<html>
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<head>
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<script type="text/javascript">
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/* Called when paused or done is pressed */
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function vidAbort() {
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document.getElementById("viddiv").style.display = "none";
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document.getElementById("loaddiv").style.display = "block";
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var pElement = document.getElementsByTagName('video')[0];
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var ajaxKill = new AjaxConnection("<?php echo $ajax3Url;?>");
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ajaxKill.connect("cbKilled");
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pElement.stop();
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}
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/* Callback when spawn264 process is ended */
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function cbVidLoad()
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{
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document.getElementById("loaddiv").innerHTML = "H264 Stream Terminated";
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}
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function bindListeners()
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{
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var pElement = document.getElementsByTagName('video')[0];
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/* Bind abort */
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pElement.addEventListener('abort', vidAbort, false);
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pElement.addEventListener('done', vidAbort, false);
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pElement.addEventListener('ended', vidAbort, false);
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pElement.addEventListener('pause', vidAbort, false);
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}
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/* Callback when kill264 process is ended */
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function cbKilled()
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{
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document.getElementById("loaddiv").innerHTML = "H264 Stream Terminated";
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}
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function startVid()
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{
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var pElement = document.getElementById("vidcontainer");
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pElement.play();
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}
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/* Callback when stream is active and ready to be played */
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function cbFileExists()
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{
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document.getElementById("viddiv").style.display = "block";
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document.getElementById("loaddiv").style.display = "none";
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var pElement = document.getElementById("vidcontainer");
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pElement.load();
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<?php if (XML_H264_AUTOPLAY == 1) { ?>
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window.setTimeout("startVid()", 1000);
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<?php } ?>
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}
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/* On-load triggers two requests immediately: spawn264 and chk264 */
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window.onload = function() {
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bindListeners();
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var ajax1 = new AjaxConnection("<?php echo "$ajaxUrl";?>");
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var ajax2 = new AjaxConnection("<?php echo "$ajax2Url";?>");
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ajax1.connect("cbVidLoad");
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ajax2.connect("cbFileExists");
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}
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function AjaxConnection(url) {
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this.connect = connect;
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this.url = url;
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}
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function connect(return_func) {
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this.x = new XMLHttpRequest();
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this.x.open("GET", this.url, true);
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var self = this;
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this.x.onreadystatechange = function() {
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if (self.x.readyState != 4)
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return;
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eval(return_func + '()');
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delete self.x;
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2010-11-06 00:48:57 +08:00
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}
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2010-11-11 06:20:29 +08:00
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this.x.send(null);
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2010-11-06 00:48:57 +08:00
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}
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</script>
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2010-11-11 06:20:29 +08:00
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<style type="text/css">
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body {
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border: 0px solid;
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margin: 0px;
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padding: 0px;
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background-color: black;
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width: <?php echo $width ?>px;
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height: <?php echo $height ?>px;
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}
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.textcl {
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text-align: center;
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font-family: Arial;
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font-size: larger;
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width: 100%;
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color: white;
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}
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</style>
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2010-11-05 03:25:34 +08:00
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</head>
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2010-11-11 06:20:29 +08:00
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<body>
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<div id="viddiv" style="display: none;">
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<?php
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echo "<video id=\"vidcontainer\" width='".$width."' height='".$height."' src=\"./temp/".m3u8fname($monitor)."\" />\n";
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?>
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</div>
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<div id="loaddiv" class="textcl">
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Initializing H264 Stream...
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</div>
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</body>
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</html>
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2010-11-05 03:25:34 +08:00
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<?php
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}
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2010-11-04 15:07:40 +08:00
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?>
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