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snapshor of the preview lib. movies are not yet working

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This commit is contained in:
Frank Karlitschek 2013-01-14 15:51:47 +01:00
parent e484811e24
commit eb27c0b2a8
1 changed files with 68 additions and 26 deletions
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94
lib/preview.php
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@ -9,6 +9,7 @@
/*
TODO:
- delete thumbnails if files change.
- make it work with external filesystem files.
- movies support
- pdf support
- mp3/id3 support
@ -34,12 +35,17 @@ class OC_Preview {
static public function show($file,$maxX,$maxY,$scalingup) {
// get the mimetype of the file
$mimetype=explode('/',OC_FileSystem::getMimeType($file));
// it´s an image
if($mimetype[0]=='image'){
OCP\Response::enableCaching(3600 * 24); // 24 hour
$image=OC_PreviewImage::getThumbnail($file,$maxX,$maxY,$scalingup);
$image->show();
// it´s a video
}elseif($mimetype[0]=='video'){
OCP\Response::enableCaching(3600 * 24); // 24 hour
OC_PreviewMovie::getThumbnail($file,$maxX,$maxY,$scalingup);
// it´s something else. Let´s create a dummy preview
}else{
header('Content-type: image/png');
@ -55,56 +61,59 @@ class OC_Preview {
class OC_PreviewImage {
public static function getThumbnail($path,$maxX,$maxY,$scalingup) {
$thumbnails_view = new \OC_FilesystemView('/'.\OCP\User::getUser() .'/'.OC_Preview::THUMBNAILS_FOLDER);
// is a preview already in the cache?
$thumbnails_view = new \OC_FilesystemView('/'.\OCP\User::getUser() .'/'.OC_Preview::THUMBNAILS_FOLDER);
// is a preview already in the cache?
if ($thumbnails_view->file_exists($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup)) {
return new \OC_Image($thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup));
}
// does the sourcefile exist?
// does the sourcefile exist?
if (!\OC_Filesystem::file_exists($path)) {
\OC_Log::write('Preview', 'File '.$path.' don\'t exists', \OC_Log::WARN);
return false;
}
// open the source image
// open the source image
$image = new \OC_Image();
$image->loadFromFile(\OC_Filesystem::getLocalFile($path));
if (!$image->valid()) return false;
// fix the orientation
// fix the orientation
$image->fixOrientation();
// calculate the right preview size
$Xsize=$image->width();
$Ysize=$image->height();
if (($Xsize/$Ysize)>($maxX/$maxY)) {
$factor=$maxX/$Xsize;
} else {
$factor=$maxY/$Ysize;
}
// only scale up if requested
if($scalingup==false) {
if($factor>1) $factor=1;
}
$newXsize=$Xsize*$factor;
$newYsize=$Ysize*$factor;
// resize
// calculate the right preview size
$Xsize=$image->width();
$Ysize=$image->height();
if (($Xsize/$Ysize)>($maxX/$maxY)) {
$factor=$maxX/$Xsize;
} else {
$factor=$maxY/$Ysize;
}
// only scale up if requested
if($scalingup==false) {
if($factor>1) $factor=1;
}
$newXsize=$Xsize*$factor;
$newYsize=$Ysize*$factor;
// resize
$ret = $image->preciseResize($newXsize, $newYsize);
if (!$ret) {
\OC_Log::write('Preview', 'Couldn\'t resize image', \OC_Log::ERROR);
unset($image);
return false;
}
// store in cache
// store in cache
$l = $thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup);
$image->save($l);
return $image;
}
@ -112,6 +121,39 @@ class OC_PreviewImage {
}
class OC_PreviewMovie {
public static function isAvailable() {
$check=shell_exec('ffmpeg');
if($check==NULL) return(false); else return(true);
}
public static function getThumbnail($path,$maxX,$maxY,$scalingup) {
$thumbnails_view = new \OC_FilesystemView('/'.\OCP\User::getUser() .'/'.OC_Preview::THUMBNAILS_FOLDER);
// is a preview already in the cache?
if ($thumbnails_view->file_exists($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup)) {
return new \OC_Image($thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup));
}
// does the sourcefile exist?
if (!\OC_Filesystem::file_exists($path)) {
\OC_Log::write('Preview', 'File '.$path.' don\'t exists', \OC_Log::WARN);
return false;
}
// call ffmpeg to do the screenshot
shell_exec('ffmpeg -y -i {'.escapeshellarg($path).'} -f mjpeg -vframes 1 -ss 1 -s {'.escapeshellarg($maxX).'}x{'.escapeshellarg($maxY).'} {.'.$thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup).'}');
// output the generated Preview
$thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup);
unset($thumbnails_view);
}
}
class OC_PreviewUnknown {
public static function getThumbnail($maxX,$maxY) {