163 lines
4.2 KiB
PHP
163 lines
4.2 KiB
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of PHP-FFmpeg.
|
|
*
|
|
* (c) Alchemy <info@alchemy.fr>
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace FFMpeg\Media;
|
|
|
|
use Alchemy\BinaryDriver\Exception\ExecutionFailureException;
|
|
use FFMpeg\Exception\InvalidArgumentException;
|
|
use FFMpeg\Filters\Waveform\WaveformFilterInterface;
|
|
use FFMpeg\Filters\Waveform\WaveformFilters;
|
|
use FFMpeg\Driver\FFMpegDriver;
|
|
use FFMpeg\FFProbe;
|
|
use FFMpeg\Exception\RuntimeException;
|
|
|
|
class Waveform extends AbstractMediaType
|
|
{
|
|
const DEFAULT_COLOR = '#000000';
|
|
|
|
/** @var Video */
|
|
protected $audio;
|
|
protected $width;
|
|
protected $height;
|
|
|
|
/**
|
|
* @var array
|
|
*/
|
|
protected $colors;
|
|
|
|
public function __construct(Audio $audio, FFMpegDriver $driver, FFProbe $ffprobe, $width, $height, $colors = array(self::DEFAULT_COLOR))
|
|
{
|
|
parent::__construct($audio->getPathfile(), $driver, $ffprobe);
|
|
$this->audio = $audio;
|
|
$this->width = $width;
|
|
$this->height = $height;
|
|
|
|
$this->setColors($colors);
|
|
}
|
|
|
|
/**
|
|
* Returns the audio related to the waveform.
|
|
*
|
|
* @return Audio
|
|
*/
|
|
public function getAudio()
|
|
{
|
|
return $this->audio;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*
|
|
* @return WaveformFilters
|
|
*/
|
|
public function filters()
|
|
{
|
|
return new WaveformFilters($this);
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*
|
|
* @return Waveform
|
|
*/
|
|
public function addFilter(WaveformFilterInterface $filter)
|
|
{
|
|
$this->filters->add($filter);
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Parameter should be an array containing at least one valid color represented as a HTML color string. For
|
|
* example #FFFFFF or #000000. By default the color is set to black. Keep in mind that if you save the waveform
|
|
* as jpg file, it will appear completely black and to avoid this you can set the waveform color to white (#FFFFFF).
|
|
* Saving waveforms to png is strongly suggested.
|
|
*
|
|
* @param array $colors
|
|
*/
|
|
public function setColors(array $colors)
|
|
{
|
|
foreach ($colors as $row => $value)
|
|
{
|
|
if (!preg_match('/^#(?:[0-9a-fA-F]{6})$/', $value))
|
|
{
|
|
//invalid color
|
|
//unset($colors[$row]);
|
|
|
|
throw new InvalidArgumentException("The provided color '$value' is invalid");
|
|
}
|
|
}
|
|
|
|
if (count($colors))
|
|
{
|
|
$this->colors = $colors;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array of colors that will be passed to ffmpeg to use for waveform generation. Colors are applied ONLY
|
|
* to the waveform. Background cannot be controlled that easily and it is probably easier to save the waveform
|
|
* as a transparent png file and then add background of choice.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getColors()
|
|
{
|
|
return $this->colors;
|
|
}
|
|
|
|
/**
|
|
* Compiles the selected colors into a string, using a pipe separator.
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function compileColors()
|
|
{
|
|
return implode('|', $this->colors);
|
|
}
|
|
|
|
/**
|
|
* Saves the waveform in the given filename.
|
|
*
|
|
* @param string $pathfile
|
|
*
|
|
* @return Waveform
|
|
*
|
|
* @throws RuntimeException
|
|
*/
|
|
public function save($pathfile)
|
|
{
|
|
/**
|
|
* might be optimized with http://ffmpeg.org/trac/ffmpeg/wiki/Seeking%20with%20FFmpeg
|
|
* @see http://ffmpeg.org/ffmpeg.html#Main-options
|
|
*/
|
|
$commands = array(
|
|
'-y', '-i', $this->pathfile, '-filter_complex',
|
|
'showwavespic=colors='.$this->compileColors().':s='.$this->width.'x'.$this->height,
|
|
'-frames:v', '1'
|
|
);
|
|
|
|
foreach ($this->filters as $filter) {
|
|
$commands = array_merge($commands, $filter->apply($this));
|
|
}
|
|
|
|
$commands = array_merge($commands, array($pathfile));
|
|
|
|
try {
|
|
$this->driver->command($commands);
|
|
} catch (ExecutionFailureException $e) {
|
|
$this->cleanupTemporaryFile($pathfile);
|
|
throw new RuntimeException('Unable to save waveform', $e->getCode(), $e);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
}
|