tools/videotimeline/vsrv.php

   1 <?php
   2 $exe_ffmpeg='ffmpeg';
   3 $exe_ffprobe='ffprobe';
   4 $exe_imagemagick='convert';
   5 $docroot='/'; # must be identical to ardour3->Edit->Preferences->Video->Docroot
   6
   7 $mode = '';
   8 if (isset($_SERVER['PATH_INFO'])) {
   9         switch($_SERVER['PATH_INFO']) {
  10                 case '/status/':
  11                 case '/status':
  12                         echo 'status: ok, online.';
  13                         exit;
  14                         break;
  15                 case '/info/':
  16                 case '/info':
  17                         $mode='info';
  18                         break;
  19                 case '/rc':
  20                 case '/rc/':
  21                         # TODO proper CSV encode (possible quotes in docroot)
  22                         # TODO support optional plain text version
  23                         echo '"'.$docroot.'",'.$_SERVER['SERVER_ADDR'].','.$_SERVER['SERVER_PORT'].',0,"/info /rc /status",""'."\n";
  24                         echo 'status: ok, online.';
  25                         exit;
  26                         break;
  27                 default:
  28                         break;
  29         }
  30 }
  31
  32 $infile='/tmp/test.avi';
  33 $w=80; $h=60; $f=0;
  34 $fr=0; $df=0;
  35 $so=0; $ar=4.0/3.0;
  36 $fmt='rgb';
  37
  38 if (isset($_REQUEST['format'])) {
  39         switch ($_REQUEST['format']) {
  40         case 'jpeg':
  41         case 'jpg':
  42                 $fmt='jpeg';
  43                 break;
  44         case 'png':
  45                 $fmt='png';
  46                 break;
  47         case 'rgba':
  48                 $fmt='rgba';
  49                 break;
  50         case 'bgra':
  51                 $fmt='bgra';
  52                 break;
  53         case 'rgb':
  54                 $fmt='rgb';
  55                 break;
  56         default:
  57                 break;
  58         }
  59 }
  60
  61 if (isset($_REQUEST['w']))
  62   $w=intval(rawurldecode($_REQUEST['w']));
  63 if (isset($_REQUEST['h']))
  64   $h=intval(rawurldecode($_REQUEST['h']));
  65 if (isset($_REQUEST['frame']))
  66   $f=intval(rawurldecode($_REQUEST['frame']));
  67 if (isset($_REQUEST['file']))
  68   $infile=rawurldecode($_REQUEST['file']);
  69
  70 if (!is_readable($docroot.$infile)) {
  71         header('HTTP/1.0 404 Not Found', true, 404);
  72         exit;
  73 }
  74
  75 $fn=escapeshellarg($docroot.$infile);
  76
  77 #$fr=`$exe_ffprobe $fn 2>&1 | awk '/Video:/{printf "%f\\n", $11}'`;
  78 $nfo=shell_exec("$exe_ffprobe $fn 2>&1");
  79 if (preg_match('@Video:.* ([0-9.]+) tbr,@m',$nfo, $m))
  80         $fr=floatval($m[1]);
  81 if ($fr<1) exit;
  82
  83 if (preg_match('@Duration: ([0-9:.]+),@m',$nfo, $m)) {
  84         $d=preg_split('@[\.:]@',$m[1]);
  85         $dr=0;
  86         $dr+=intval($d[0])*3600;
  87         $dr+=intval($d[1])*60;
  88         $dr+=intval($d[2]);
  89         $dr+=floatval($d[3]) / pow(10,strlen($d[3]));
  90         $df=$fr*$dr;
  91 }
  92 if (preg_match('@start: ([0-9:.]+),@m',$nfo, $m)) {
  93         $so=floatval($m[1]);
  94 }
  95 if (preg_match('@DAR ([0-9:]+)\]@m',$nfo, $m)) {
  96         $d=explode(':',$m[1]);
  97         $ar=floatval($d[0]/$d[1]);
  98 }
  99 else if (preg_match('@Video:.* ([0-9]+x[0-9]+),@m',$nfo, $m)) {
 100         $d=explode('x',$m[1]);
 101         $ar=floatval($d[0]/$d[1]);
 102 }
 103
 104 if ($mode=='info') {
 105         if (isset($_REQUEST['format'])) {
 106                 switch ($_REQUEST['format']) {
 107                 case 'csv':
 108                         # protocol, width, height, aspect, fps, fps, duration
 109                         echo "1,0,0,$ar,$fr,$df\n";
 110                         exit;
 111                         break;
 112                 default:
 113                         break;
 114                 }
 115         }
 116         # Protocol Version number
 117         # FPS
 118         # duration (in frames)
 119         # start-offset (in seconds)
 120         # aspect-ratio
 121         echo "1\n$fr\n$df\n$so\n$ar\n";
 122         exit;
 123 }
 124
 125 if ($df<1 || $f>$df ) exit;
 126 $st=floor(1000.0*$f/$fr)/1000.0;
 127
 128 $wh=escapeshellarg($w.'x'.$h);
 129 $ss=escapeshellarg($st);
 130
 131 header('Content-Type: image/'.$fmt);
 132 passthru($exe_ffmpeg.' -loglevel quiet'
 133               .' -i '.$fn.' -s '.$wh.' -ss '.$ss.' -vframes 1 '
 134         .'-f image2 -vcodec png - 2>/dev/null'
 135         .'| '.$exe_imagemagick.' - '.$fmt.':-');