From b3bfb34475465a186aafa2968607e85086e87fb8 Mon Sep 17 00:00:00 2001
From: Ilja Lukin <ilja@stud.fh-dortmund.de>
Date: Tue, 20 Nov 2018 23:32:47 +0100
Subject: [PATCH] added custom frame filter

---
 .../Filters/Frame/CustomFrameFilter.php       | 54 +++++++++++++++++++
 src/FFMpeg/Filters/Frame/FrameFilters.php     | 14 +++++
 2 files changed, 68 insertions(+)
 create mode 100644 src/FFMpeg/Filters/Frame/CustomFrameFilter.php

diff --git a/src/FFMpeg/Filters/Frame/CustomFrameFilter.php b/src/FFMpeg/Filters/Frame/CustomFrameFilter.php
new file mode 100644
index 0000000..8ace0e9
--- /dev/null
+++ b/src/FFMpeg/Filters/Frame/CustomFrameFilter.php
@@ -0,0 +1,54 @@
+<?php
+
+/*
+ * This file is part of PHP-FFmpeg.
+ *
+ * (c) Alchemy <dev.team@alchemy.fr>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FFMpeg\Filters\Frame;
+
+use FFMpeg\Exception\RuntimeException;
+use FFMpeg\Media\Frame;
+
+class CustomFrameFilter implements FrameFilterInterface
+{
+    /** @var string */
+    private $filter;
+    /** @var integer */
+    private $priority;
+
+    /**
+     * A custom filter, useful if you want to build complex filters
+     *
+     * @param string $filter
+     * @param int    $priority
+     */
+    public function __construct($filter, $priority = 0)
+    {
+        $this->filter = $filter;
+        $this->priority = $priority;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return $this->priority;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply(Frame $frame)
+    {
+        $commands = array('-vf', $this->filter);
+
+        return $commands;
+    }
+}
+
diff --git a/src/FFMpeg/Filters/Frame/FrameFilters.php b/src/FFMpeg/Filters/Frame/FrameFilters.php
index e4b9614..ad7e95a 100644
--- a/src/FFMpeg/Filters/Frame/FrameFilters.php
+++ b/src/FFMpeg/Filters/Frame/FrameFilters.php
@@ -36,4 +36,18 @@ class FrameFilters
 
         return $this;
     }
+
+    /**
+     * Applies a custom filter: -vf foo bar
+     *
+     * @param string    $parameters
+     *
+     * @return FrameFilters
+     */
+    public function custom($parameters)
+    {
+        $this->frame->addFilter(new CustomFrameFilter($parameters));
+
+        return $this;
+    }
 }