commit 58f27830f4951e131736551501c402da576faba6
Author: Christopher Vagnetoft <cvagnetoft@gmail.com>
Date:   Thu Dec 22 03:15:02 2016 +0100

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..61ead86
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/vendor
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..69a4d4a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,35 @@
+VfxApply: Video Effect Toolkit
+==============================
+
+VfxApply is a tool to apply effects and filters using presets and plugins. A preset
+can for example apply audio normalization, visualize audio as video, or apply a
+Natron pipeline.
+
+
+
+## Usage
+
+    vfxapply [-i <input>] [-o <output>|-O] [-p <preset>] [-c <key>=<value>]
+    
+        -i  Set the input file (if omitted, a file picker will be displayed)
+        -o  Set the output file (if omitted, a file picker will be displayed)
+        -O  Automatically assign output filename based on input filename
+        -p  Select the preset to apply
+        -c  Specify parameters for the preset
+
+Examples:
+
+    vfxapply
+        Ask for input, output and preset
+
+    vfxapply -i in.mp4 -o out.m4
+        Ask for preset to apply and process in.mp4 into out.mp4
+
+    vfxapply -O -p ffmpeg-audio-normalize
+        Normalize audio after picking input, output name will be generated.
+
+## Plugins
+
+### ffmpeg
+
+### natron
diff --git a/bin/vfxapply b/bin/vfxapply
new file mode 100755
index 0000000..d365625
--- /dev/null
+++ b/bin/vfxapply
@@ -0,0 +1,9 @@
+#!/usr/bin/env php
+<?php
+
+if (!trim(exec("which zenity"))) {
+    fprintf(STDERR, "You need to install zenity to use this tool.\n");
+    exit(1);
+}
+
+require_once __DIR__."/../src/app.php";
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..ae1ab34
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,20 @@
+{
+    "name": "noccylabs/vfxapply",
+    "description": "Apply effects to video and audio",
+    "type": "application",
+    "license": "GPL-3.0",
+    "authors": [
+        {
+            "name": "Christopher Vagnetoft",
+            "email": "cvagnetoft@gmail.com"
+        }
+    ],
+    "autoload": {
+        "psr-4": {
+            "VfxApply\\": "src/"
+        }
+    },
+    "require": {
+        "symfony/yaml": "^3.2"
+    }
+}
diff --git a/plugins/ffmpeg/plugin.php b/plugins/ffmpeg/plugin.php
new file mode 100644
index 0000000..3f8618b
--- /dev/null
+++ b/plugins/ffmpeg/plugin.php
@@ -0,0 +1,89 @@
+<?php
+
+namespace VfxApply\Plugin\Ffmpeg;
+
+use VfxApply\Plugin;
+use VfxApply\Input;
+use VfxApply\Output;
+use VfxApply\Preset;
+
+class FfmpegPlugin extends Plugin
+{
+    public function getName()
+    {
+        return "ffmpeg";
+    }
+    
+    private function appendFilterOption($filter, $key, $value=null)
+    {
+        if (strpos($filter,"=")===false) {
+            $filter.= "=";
+        } else {
+            $filter.= ":";
+        }
+        $filter.= $key . ($value?"={$value}":"");
+        return $filter;
+    }
+
+    public function applyPreset(Preset $preset, Input $input, Output $output)
+    {
+        // Get filter string from preset
+        $filter = $preset->get("filter");
+        $type = $preset->get("type")?:"complex";
+        $extra = $preset->get("extra");
+
+        switch ($type) {
+            case 'audio': 
+                $filter_type = "-af"; 
+                $filter_extra = "";
+                break;
+            case 'video': 
+                $filter_type = "-vf"; 
+                $filter_extra = "";
+                break;
+            case 'complex': 
+            default: 
+                $filter_type = "-filter_complex"; 
+                $filter_extra = "";
+                break;
+        }
+        /*if (($size = $preset->getParam("size"))) {
+            $filter = $this->appendFilterOption($filter, "s", $size);
+        }*/
+
+        // Create a progress dialog 
+        $dialog = $this->createDialog(DIALOG_PROGRESS, "Applying filter");
+        $dialog->show();
+
+        // Create command line to run ffmpeg
+        $cmdline = sprintf(
+            "ffmpeg -loglevel error -y -stats -i %s %s %s %s %s 2>&1",
+            escapeshellarg($input->getFilename()),
+            $filter_type,
+            escapeshellarg($filter),
+            trim($extra." ".$filter_extra),
+            escapeshellarg($output->getFilename())
+        );
+
+        // Create a coprocess for ffmpeg
+        $frames = $input->getVideoDuration()->frames;
+        $ffmpeg = $this->createProcess($cmdline, function ($read) use ($dialog,$frames) {
+            $dialog->setText(trim($read));
+            if (preg_match('/^frame=[\s]*([0-9]+)\s/', trim($read), $match)) {
+                $frame = intval($match[1]);
+                $pc = round($frame/$frames*100);
+                $dialog->setProgress($pc);
+            }
+            if ($dialog->isCancelled()) return false;
+            
+            // frame= 4140 fps=102 q=-1.0 Lsize=    4559kB time=00:00:48.04 bitrate= 777.3kbits/s speed=1.18x  
+        });
+        $ffmpeg->run();
+
+        unset($dialog);
+
+    }
+
+}
+
+return new FfmpegPlugin();
\ No newline at end of file
diff --git a/plugins/natron/plugin.php b/plugins/natron/plugin.php
new file mode 100644
index 0000000..1ab9206
--- /dev/null
+++ b/plugins/natron/plugin.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace VfxApply\Plugin\Natron;
+
+use VfxApply\Plugin;
+use VfxApply\Input;
+use VfxApply\Output;
+use VfxApply\Preset;
+
+class NatronPlugin extends Plugin
+{
+    public function getName()
+    {
+        return "natron";
+    }
+    
+    public function applyPreset(Preset $preset, Input $input, Output $output)
+    {
+
+    }
+
+}
+
+return new NatronPlugin();
\ No newline at end of file
diff --git a/presets/ffmpeg-a2v/ffmpeg-ahistogram.yml b/presets/ffmpeg-a2v/ffmpeg-ahistogram.yml
new file mode 100644
index 0000000..c623966
--- /dev/null
+++ b/presets/ffmpeg-a2v/ffmpeg-ahistogram.yml
@@ -0,0 +1,6 @@
+preset:
+    name:   Create histogram from audio
+    group:  ffmpeg/a2v
+    plugin: ffmpeg
+    props:
+        filter: "ahistogram=dmode=separate:slide=1:scale=log"
diff --git a/presets/ffmpeg-a2v/ffmpeg-aphasemeter.yml b/presets/ffmpeg-a2v/ffmpeg-aphasemeter.yml
new file mode 100644
index 0000000..139d7a0
--- /dev/null
+++ b/presets/ffmpeg-a2v/ffmpeg-aphasemeter.yml
@@ -0,0 +1,6 @@
+preset:
+    name:   Create phase meter from audio
+    group:  ffmpeg/a2v
+    plugin: ffmpeg
+    props:
+        filter: "aphasemeter=mpc=#ff8800"
diff --git a/presets/ffmpeg-a2v/ffmpeg-showspectrum.yml b/presets/ffmpeg-a2v/ffmpeg-showspectrum.yml
new file mode 100644
index 0000000..f77f79d
--- /dev/null
+++ b/presets/ffmpeg-a2v/ffmpeg-showspectrum.yml
@@ -0,0 +1,7 @@
+preset:
+    name:   Create spectrum from audio
+    group:  ffmpeg/a2v
+    plugin: ffmpeg
+    props:
+        filter: "showspectrum=mode=separate:color=intensity:slide=1:scale=log"
+
diff --git a/presets/ffmpeg-audio/ffmpeg-audio-compand.yml b/presets/ffmpeg-audio/ffmpeg-audio-compand.yml
new file mode 100644
index 0000000..d1472e6
--- /dev/null
+++ b/presets/ffmpeg-audio/ffmpeg-audio-compand.yml
@@ -0,0 +1,8 @@
+preset:
+    name:   Compress/expand dynamic range
+    group:  ffmpeg/audio
+    plugin: ffmpeg
+    props:
+        filter: "[0:a]compand=.3|.3:1|1:-90/-60|-60/-40|-40/-30|-20/-20:6:0:-90:0.2"
+        extra: "-c:v copy"
+        type: complex
diff --git a/presets/ffmpeg-audio/ffmpeg-audio-dynaudionorm.yml b/presets/ffmpeg-audio/ffmpeg-audio-dynaudionorm.yml
new file mode 100644
index 0000000..2e45143
--- /dev/null
+++ b/presets/ffmpeg-audio/ffmpeg-audio-dynaudionorm.yml
@@ -0,0 +1,12 @@
+preset:
+    name:   Normalize audio level
+    group:  ffmpeg/audio
+    plugin: ffmpeg
+    props:
+        filter: "dynaudnorm=m=100:s=12"
+        #filter: "dynaudnorm=m={maxgain}:s={compress}"
+        extra: "-c:v copy"
+        type: complex
+    params:
+        compress: { label:"Compression factor", type:float, min:0.0, max:30.0, default:0.0 }
+        maxgain: { label:"Max gain factor", type:float, min:0.0, max:100.0, default:10.0 }
\ No newline at end of file
diff --git a/src/Application.php b/src/Application.php
new file mode 100644
index 0000000..567a8bd
--- /dev/null
+++ b/src/Application.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace VfxApply;
+
+class Application
+{
+
+    protected $plugins = [];
+    
+    protected $presets = [];
+
+    public function readPlugins()
+    {
+        $iter = new \DirectoryIterator(
+            __DIR__."/../plugins"
+        );
+        foreach ($iter as $dir) {
+            if (!$dir->isDir())
+                continue;
+            if (!file_exists($dir->getPathname()."/plugin.php"))
+                continue;
+            $this->loadPlugin($dir->getPathname());
+        }
+    }
+
+    public function readPresets()
+    {
+        $iter = new \RecursiveIteratorIterator(
+                    new \RecursiveDirectoryIterator(
+                        __DIR__."/../presets"
+                ));
+        foreach ($iter as $file) {
+            if ($file->isDir() || ($file->getExtension()!='yml'))
+                continue;
+            $this->loadPreset($file->getPathname());
+        }
+    }
+
+    private function loadPlugin($path)
+    {
+        $plugin = require_once $path."/plugin.php";
+        $this->plugins[$plugin->getName()] = $plugin;
+    }
+
+    private function loadPreset($file)
+    {
+        $preset = Preset::createFromFile($file);
+        $id = basename($file,".yml");
+        $this->presets[$id] = $preset;
+    }
+
+    private function selectPreset()
+    {
+        $cmdl = "zenity --list --column=Group --column=Preset --column=Description ". 
+                "--title=\"Apply VFX\" ".
+                "--width=400 --height=400 ".
+                "--text=\"Select the preset to apply\" ".
+                "--mid-search --print-column=2 ";
+        foreach ($this->presets as $id=>$preset) {
+            $cmdl.=sprintf(
+                "%s %s %s ", 
+                escapeshellarg($preset->getGroup()), 
+                escapeshellarg($id),
+                escapeshellarg($preset->getName())
+            );
+        }
+
+        exec($cmdl." 2>/dev/null", $output, $retval);
+        if ($retval == 0) {
+            $name = trim($output[0]);
+            return $this->presets[$name];
+        } else {
+            return false;
+        }
+    }
+
+    public function run()
+    {
+        $this->readPlugins();
+        $this->readPresets();
+
+        $opts = getopt("i:o:");
+
+        $input = new Input();
+        if (!empty($opts['i'])) {
+            $input->setFilename($opts['i']);
+        } else {
+            if (!$input->selectFile()) {
+                return 1;
+            }
+        }
+        $input->analyze();
+
+        $dur = $input->getVideoDuration();
+        printf("Input: %s %.2fs (%d frames)\n", $input->getFilename(), $dur->seconds, $dur->frames);
+
+        if (!($preset = $this->selectPreset())) {
+            return 1;
+        }
+        $plugin_name = $preset->getPlugin();
+        $plugin = $this->plugins[$plugin_name];
+
+        $output = new Output();
+        $output->setFilename("/tmp/out.mp4");
+
+        $plugin->applyPreset($preset, $input, $output);
+
+    }
+
+}
\ No newline at end of file
diff --git a/src/Dialog.php b/src/Dialog.php
new file mode 100644
index 0000000..1b8f919
--- /dev/null
+++ b/src/Dialog.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace VfxApply;
+
+class Dialog
+{
+    protected $title;
+
+    public function __construct($title=null)
+    {
+        $this->title = $title;
+    }
+
+    public function __destruct()
+    {
+        $this->onDestroy();
+    }
+
+    public function show()
+    {
+        $this->onCreate();
+    }
+
+    protected function onCreate()
+    {}
+
+    protected function onDestroy()
+    {}
+}
\ No newline at end of file
diff --git a/src/Dialog/ProgressDialog.php b/src/Dialog/ProgressDialog.php
new file mode 100644
index 0000000..f49fde3
--- /dev/null
+++ b/src/Dialog/ProgressDialog.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace VfxApply\Dialog;
+
+use VfxApply\Dialog;
+
+class ProgressDialog extends Dialog
+{
+    protected $ps;
+
+    protected $pipe;
+
+    protected $out;
+
+    protected function onCreate()
+    {
+        $this->out = fopen("php://temp", "wb");
+        $cmdl = sprintf("zenity --progress --title=%s --auto-close --text='Running' --width=400 --progress=0 2>/dev/null", escapeshellarg($this->title));
+        $ds = [
+            0 => [ "pipe", "r" ],
+            1 => [ "pipe", "w" ],
+            2 => [ "pipe", "w" ]
+        ];
+        $this->ps = proc_open($cmdl, $ds, $pipes);
+        $this->pipe = $pipes[0];
+    }
+
+    protected function onDestroy()
+    {
+        /*
+        $status = proc_get_status($this->ps);
+        $pid = $status['pid'];
+        posix_kill($pid,15);
+        pcntl_waitpid($pid,$status);
+        print_r($status);
+        */
+        proc_terminate($this->ps);
+        proc_close($this->ps);
+    }
+
+    public function setProgress($pc)
+    {
+        fprintf($this->pipe, "%d\n", $pc);
+    }
+
+    public function setText($text)
+    {
+        fprintf($this->pipe, "# %s\r\n", addslashes($text));
+    }
+
+    public function isCancelled()
+    {
+        $status = proc_get_status($this->ps);
+        return ($status['running']==false);
+    }
+
+}
\ No newline at end of file
diff --git a/src/Input.php b/src/Input.php
new file mode 100644
index 0000000..9c8367e
--- /dev/null
+++ b/src/Input.php
@@ -0,0 +1,69 @@
+<?php
+
+namespace VfxApply;
+
+class Input
+{ 
+    protected $filename;
+
+    protected $audiostreams = [];
+
+    protected $videostreams = [];
+
+    public function setFilename($filename)
+    {
+        $this->filename = $filename;
+    }
+
+    public function getFilename()
+    {
+        return $this->filename;
+    }
+
+    public function selectFile()
+    {
+        $cmdl = "zenity  --file-selection --title \"Select input file\" ";
+        $cmdl.= "--file-filter=\"Video files (mp4,m4v,avi,ogv,mkv)|*.mp4 *.m4v *.avi *.ogv *.mkv\" ";
+        $cmdl.= "--file-filter=\"Audio files (mp3,m4a,wav,ogg)|*.mp3 *.m4a *.wav *.ogg\" ";
+        $cmdl.= "--file-filter=\"All files|*\" 2>/dev/null";
+         
+        exec($cmdl, $out, $ret);
+        if ($ret == 0) {
+            $this->filename = trim(array_shift($out));
+            return true;
+        }
+        return false;
+    }
+
+    public function analyze()
+    {
+        $cmdl = "ffprobe -loglevel error -show_streams -print_format json ".escapeshellarg($this->filename);
+
+        exec($cmdl, $out, $ret);
+        if ($ret != 0) {
+            throw new \Exception("Unable to analyze file {$this->filename}");
+        }
+        $info = json_decode(join("\n",$out));
+        
+        foreach ($info->streams as $stream) {
+            if ($stream->codec_type == 'video') {
+                $this->videostreams[] = $stream;
+            } elseif ($stream->codec_type == 'audio') {
+                $this->audiostreams[] = $stream;
+            }
+        }
+
+    }
+
+    public function getVideoDuration()
+    {
+        $duration = $this->videostreams[0]->duration;
+        $frames = $this->videostreams[0]->nb_frames;
+
+        return (object)[
+            "seconds" => floatval($duration),
+            "frames" => intval($frames)
+        ];
+    }
+
+}
\ No newline at end of file
diff --git a/src/Output.php b/src/Output.php
new file mode 100644
index 0000000..b7f0257
--- /dev/null
+++ b/src/Output.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace VfxApply;
+
+class Output
+{ 
+    protected $filename;
+
+    public function setFilename($filename)
+    {
+        $this->filename = $filename;
+    }
+
+    public function getFilename()
+    {
+        return $this->filename;
+    }
+}
\ No newline at end of file
diff --git a/src/Plugin.php b/src/Plugin.php
new file mode 100644
index 0000000..d6597e6
--- /dev/null
+++ b/src/Plugin.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace VfxApply;
+
+class Plugin
+{
+    protected function createDialog($type, $title=null)
+    {
+        switch ($type) {
+            case DIALOG_PROGRESS:
+                return new Dialog\ProgressDialog($title);
+            default:
+                throw new \Exception("Error, undefined dialog type {$type}");
+        }
+    }
+
+    protected function createProcess($command, callable $callback)
+    {
+        return new Process($command, $callback);
+    }
+    
+}
\ No newline at end of file
diff --git a/src/Preset.php b/src/Preset.php
new file mode 100644
index 0000000..b734079
--- /dev/null
+++ b/src/Preset.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace VfxApply;
+
+use Symfony\Component\Yaml\Yaml;
+
+class Preset
+{
+    /** @var string Preset name */
+    protected $name;
+    /** @var string The group this preset belong to, for organizing */
+    protected $group;
+    /** @var string The plugin this preset uses */
+    protected $plugin;
+    /** @var array The properties are used by the plugin */
+    protected $props = [];
+    /** @var array The params can be assigned from user data */
+    protected $params = [];
+
+    public static function createFromFile($filename)
+    {
+        $body = file_get_contents($filename);
+        $conf = Yaml::parse($body);
+        if (!array_key_exists('preset',$conf)) {
+            throw new \Exception("File does not appear to be a valid preset");
+        }
+
+        return new Preset($conf['preset']);
+    }
+
+    public function __construct(array $preset)
+    {
+        $this->name = $preset['name'];
+        $this->group = empty($preset['group'])?null:$preset['group'];
+        $this->plugin = $preset['plugin'];
+        $this->props = $preset['props'];
+        $this->params = empty($preset['params'])?null:$preset['params'];
+    }
+
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    public function getGroup()
+    {
+        return $this->group;
+    }
+
+    public function getPlugin()
+    {
+        return $this->plugin;
+    }
+
+    public function get($prop)
+    {
+        if (!array_key_exists($prop, $this->props)) {
+            return null;
+        }
+        return $this->props[$prop];
+    }
+
+    public function getParam($param)
+    {
+        if (!array_key_exists($param, $this->params)) {
+            throw new \Exception("No such param defined in preset: {$param}");
+        }
+        return $this->params[$param];
+    }
+}
\ No newline at end of file
diff --git a/src/Process.php b/src/Process.php
new file mode 100644
index 0000000..db506c7
--- /dev/null
+++ b/src/Process.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace VfxApply;
+
+class Process
+{
+    public function __construct($cmdline, callable $callback)
+    {
+        $this->cmdline = $cmdline;
+        $this->callback = $callback;
+    }
+
+    public function __destruct()
+    {
+    }
+
+    public function run()
+    {
+        $ds = [
+            0 => [ "pipe", "r" ],
+            1 => [ "pipe", "w" ],
+            2 => [ "pipe", "w" ],
+        ];
+        echo "Exec: {$this->cmdline}\n";
+        $ps = proc_open($this->cmdline, $ds, $pipes);
+        list($stdin,$stdout,$stderr) = $pipes;
+
+        stream_set_blocking($stdout,false);
+
+        $buf = null;
+        while (true) {
+            $str = fgets($stdout, 4192);
+            $status = proc_get_status($ps);
+            if ($str) {
+                $ret = call_user_func($this->callback, $str);
+                if ($ret === false) {
+                    proc_terminate($ps);
+                }
+            }
+
+            if ($status['running']==false) break;
+            usleep(10000);
+        }
+        proc_close($ps);
+        return $status['exitcode'];
+    }
+}
diff --git a/src/app.php b/src/app.php
new file mode 100644
index 0000000..860e8e3
--- /dev/null
+++ b/src/app.php
@@ -0,0 +1,15 @@
+<?php
+
+define("DIALOG_PROGRESS", "progress");
+define("DIALOG_CONFIRM", "confirm");
+define("DIALOG_WARNING", "warning");
+define("DIALOG_MESSAGE", "message");
+define("DIALOG_ERROR", "error");
+define("DIALOG_OPENFILE", "openfile");
+define("DIALOG_SAVEFILE", "savefile");
+
+require_once __DIR__."/../vendor/autoload.php";
+
+use VfxApply\Application;
+$app = new Application();
+$app->run();
\ No newline at end of file