index.php

<?php
###################################################################
#  PHP-MJPEG
###################################################################

# Used to separate multipart, You can set your own
$boundary = "my_boundary";

# Set this so PHP doesn't timeout during a long stream
set_time_limit(0);

# Disable PHP's compression of output to the client
ini_set('zlib.output_compression', 0);

# Set implicit flush, and flush all current buffers
ini_set('implicit_flush', 1);
for ($i = 0; $i < ob_get_level(); $i++) {
    ob_end_flush();
}
ob_implicit_flush(1);

# We start with the standard headers. PHP allows us this much
header("Cache-Control: no-cache");
header("Cache-Control: private");
header("Pragma: no-cache");
header("Content-type: multipart/x-mixed-replace; boundary=$boundary");

# From here out, we no longer expect to be able to use the header() function
print "--$boundary\n";

# Banner for some situations
function banner($info)
{
    global $boundary;
    $font_size = 40;
    global $font;
    print "Content-type: image/jpeg\n\n";
    $im = imagecreatetruecolor(704, 576);
    $fill_color = imagecolorallocate($im, 50, 100, 200);
    imagefill($im, 1, 1, $fill_color);
    $text_color = imagecolorallocate($im, 255, 255, 255);
    $bbox = imagettfbbox($font_size, 0, $font, 'No file');
    $x = $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) - 25;
    $y = $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;
    imagettftext($im, $font_size, 0, $x, $y - $font_size / 2, $text_color, $font, 'No Image');
    $bbox = imagettfbbox($font_size * 0.7, 0, $font, $info);
    $x = $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) - 25;
    $y = $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;
    imagettftext($im, $font_size * 0.7, 0, $x, $y+$font_size / 2, $text_color, $font, $info);
    $dt = date("Y-m-d H:i:s");
    $bbox = imagettfbbox($font_size * 0.7, 0, $font, $dt);
    $x = $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) - 25;
    $y = $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;
    imagettftext($im, $font_size * 0.7, 0, $x, $y+$font_size * 1.5, $text_color, $font, $dt);
    imagejpeg($im);
    imagedestroy($im);
    print "--$boundary\n";
}

# Target file name detected from request.
$filename = basename($_SERVER["REQUEST_URI"]);
$file = "/var/www/html/video/upload/".basename($_SERVER["REQUEST_URI"], ".mjpg")."/live.mjpg";
$dir = "/var/www/html/video/upload/".basename($_SERVER["REQUEST_URI"], ".mjpg");
$font = './Arial_Bold.ttf';
$font_size = 100;
# The main loop
while (true) {

    # If no file, present banner
    while (!file_exists($file)) {
        banner("File not found");
        usleep(500000);
    }

    # if file exists, show it, and setup inotify

    print "Content-type: image/jpeg\n\n";
    $im = imagecreatefromjpeg($file);
    imagejpeg($im);
    imagedestroy($im);
    print "--$boundary\n";

    $in = inotify_init();
    stream_set_blocking($in, false);
    $wd = inotify_add_watch($in, $dir, IN_MOVED_TO);
    $to = 2;
    $i = 0;

    while (file_exists($file)) {

    # Wait for a file change or timeout. Present banner or frame
        $r = array($in);
        $w = array();
        $e = array();
        $n = stream_select($r, $w, $e, $to);
        if ($n == 0) {
            if (!file_exists($file)) {
                banner("No updates");
            } else {
                # No updates detected, present last frame with flashy text
                $i++;
                print "Content-type: image/jpeg\n\n";
                $im = imagecreatefromjpeg($file);
                if ($i % 2) {
                    $text_color = imagecolorallocate($im, 255, 0, 0);
                    $bbox = imagettfbbox($font_size, 0, $font, 'No Updates');
                    $x = $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) - 25;
                    $y = $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;
                    imagettftext($im, $font_size, 0, $x, $y - $font_size * 0.5, $text_color, $font, 'No updates');
                    $bbox = imagettfbbox($font_size * 0.33, 0, $font, "Last frame received:");
                    $x = $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) - 25;
                    $y = $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;
                    imagettftext($im, $font_size*0.33, 0, $x, $y + $font_size * 0.5, $text_color, $font, "Last frame received:");
                    clearstatcache($clear_realpath_cache = true, $file);
                    $ft = date("d m Y H:i:s", filectime($file));
                    $bbox = imagettfbbox($font_size * 0.33, 0, $font, $ft);
                    $x = $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) - 25;
                    $y = $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;
                    imagettftext($im, $font_size*0.33, 0, $x, $y+ $font_size * 1.5, $text_color, $font, $ft);
                }
                imagejpeg($im);
                imagedestroy($im);
                print "--$boundary\n";
            }
        } else {
            if (!file_exists($file)) {
                banner("No file");
            } else {
                # New frame detected, present it
                $ev = inotify_read($in);
                print "Content-type: image/jpeg\n\n";
                print file_get_contents($file);
                print "--$boundary\n";
            }
        }
    }
}

inotify_rm_watch($in, $wd);
fclose($in);