Файл: sys/fnc/create_preview.php
Строк: 36
<?
function create_preview_from_resource($imgc, $w, $h) {
if (!is_resource($imgc) || $w == 0 || $h == 0)
return false;
$img_x=imagesx($imgc);
$img_y=imagesy($imgc);
if ($img_x==$img_y) {
$dstW=$w;
$dstH=$h;
} elseif ($img_x>$img_y) {
$prop=$img_x/$img_y;
$dstW=$w;
$dstH=ceil($dstW/$prop);
} else {
$prop=$img_y/$img_x;
$dstH=$h;
$dstW=ceil($dstH/$prop);
}
$screen=imagecreatetruecolor($dstW, $dstH);
imagecopyresampled($screen, $imgc, 0, 0, 0, 0, $dstW, $dstH, $img_x, $img_y);
return $screen;
}
function create_preview($filePath, $savePath, $w = 0, $h = 0) {
if (!is_file($filePath) || $w == 0 || $h == 0)
return false;
if ($imgc = @imagecreatefromstring(file_get_contents($filePath))) {
$screen = create_preview_from_resource($imgc, $w, $h);
imagedestroy($imgc);
if (!imagepng($screen, $savePath)) {
imagedestroy($screen);
return false;
}
imagedestroy($screen);
return true;
}
if (class_exists('ffmpeg_movie') && @$movie = new ffmpeg_movie($filePath)) {
$frame_number = rand(1, $movie -> getFrameCount());
$videPreviewFrameNum = $frame_number;
$frame = $movie -> getFrame($frame_number);
if (!$frame)
return false;
$imgc = $frame -> toGDImage();
$screen = create_preview_from_resource($imgc, $w, $h);
imagedestroy($imgc);
if (!imagepng($screen, $savePath)) {
imagedestroy($screen);
return false;
}
imagedestroy($screen);
return true;
}
return false;
}
?>