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authorDalyn Cessac <dalyn.cessac@1214036.no-reply.drupal.org>2011-03-16 11:06:40 -0500
committerDalyn Cessac <dalyn.cessac@1214036.no-reply.drupal.org>2011-03-16 11:06:40 -0500
commita435de089da4dd37c3c183f633a49107c720dd95 (patch)
tree5f92decbf2d4bb27f85c49bfc5b4fcaf938b58b4 /libraries/phpvideotoolkit/adapters/toolkit/frame.php
parenta31b9883849b0a04420ee1d476fbe08c87bc5d53 (diff)
downloadvideo-a435de089da4dd37c3c183f633a49107c720dd95.tar.gz
video-a435de089da4dd37c3c183f633a49107c720dd95.tar.bz2
Added phpvideotoolkit transcoder and updates to the preset ui
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/toolkit/frame.php')
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1 files changed, 325 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/toolkit/frame.php b/libraries/phpvideotoolkit/adapters/toolkit/frame.php
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+<?php
+
+ /* SVN FILE: $Id$ */
+ /**
+ * @author Oliver Lillie (aka buggedcom) <publicmail@buggedcom.co.uk>
+ * @package PHPVideoToolkit
+ * @license BSD
+ * @copyright Copyright (c) 2008 Oliver Lillie <http://www.buggedcom.co.uk>
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
+ * is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+ * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+ /**
+ * This is similar in terms to FFmpeg-PHP's ffmpeg_frame, however the constructor can accept any number of items such as
+ * a GD image, an image file, or an instance of PHPVideoToolkit, note if using an instance of PHPVideoToolkit you must
+ * have already specified the frame you wish to extract with PHPVideoToolkit::extractFrame() or set
+ */
+ class PHPVideoToolkit_Frame
+ {
+
+ private $_resource = null;
+ private $_gd_resource = null;
+ private $_resource_type = null;
+ private $_width = null;
+ private $_height = null;
+ private $_timecode = null;
+
+ /**
+ * Class Constructor
+ * @param resource $gd_resource A GD image resource.
+ * @param integer $timecode The time in seconds of the frame. If false and the $resource is a PHPVideoToolkit instance then the timecode will be retrieved from
+ * the instance. However if $timecode is set and the $resource is a PHPVideoToolkit the $timecode will override the time retrieved from the instance.
+ */
+ function __construct($resource, $timecode=false)
+ {
+// is this a gd resource
+ if(is_resource($resource) && get_resource_type($resource) == 'gd')
+ {
+ $this->_gd_resource = $resource;
+ $this->_resource_type = 'gd';
+ $this->_width = imagesx($resource);
+ $this->_height = imagesy($resource);
+ $this->_timecode = $timecode;
+ }
+// is this a gd resource
+ else if(is_string($resource) && is_file($resource))
+ {
+ $this->_resource_type = 'file';
+ $dimensions = getimagesize($resource);
+ $this->_width = $dimensions[0];
+ $this->_height = $dimensions[1];
+ $this->_timecode = $timecode;
+ }
+// check for PHPVideoToolkit class instance
+ else if(get_class($resource) == 'PHPVideoToolkit')
+ {
+ $info = $resource->getFileInfo();
+ if(!$info)
+ {
+// throw error
+ }
+ if(!isset($info['video']))
+ {
+// throw error
+ }
+ $this->_resource = $resource;
+ $this->_resource_type = 'toolkit';
+ $this->_width = $info['video']['dimensions']['width'];
+ $this->_height = $info['video']['dimensions']['height'];
+// set the timecode, the $timecode value will override
+ $set_timecode = $resource->hasCommand('-ss');
+ $this->_timecode = $timecode === false && $set_timecode !== false ? $set_timecode : $timecode;
+ }
+// isn't a valid resource type so throw error
+ else
+ {
+// throw error
+ }
+ }
+
+ /**
+ * Destroys any gd resource if made
+ */
+ function __destruct()
+ {
+ if($this->_resource_type == 'gd' && is_resource($this->_resource))
+ {
+ imagedestroy($this->_resource);
+ }
+ }
+
+ /**
+ * Determines if the resource supplied to the frame is valid.
+ * @access public
+ * @return integer
+ */
+ public function hasValidResource()
+ {
+ return $this->_resource_type !== null;
+ }
+
+ /**
+ * Return the width of the frame.
+ * @access public
+ * @return integer
+ */
+ public function getWidth()
+ {
+ return $this->_width;
+ }
+
+ /**
+ * Return the height of the frame.
+ * @access public
+ * @return integer
+ */
+ public function getHeight()
+ {
+ return $this->_height;
+ }
+
+ /**
+ * Return the presentation time stamp of the frame.
+ * @access public
+ * @uses ffmpeg_frame::getPTS()
+ * @return integer
+ */
+ public function getPresentationTimestamp()
+ {
+ return $this->getPTS();
+ }
+
+ /**
+ * Return the presentation time stamp of the frame.
+ * @access public
+ * @return integer
+ */
+ public function getPTS()
+ {
+ return $this->_timecode;
+ }
+
+ /**
+ * Determines if the current frame is a keyframe.
+ * @access public
+ * @return integer
+ */
+ public function isKeyFrame()
+ {
+ return false;
+ }
+
+ /**
+ * Resize and optionally crop the frame.
+ * NOTE 1: Cropping is always applied to the frame before it is resized.
+ * NOTE 2: Crop values must be even numbers.
+ * @access public
+ * @param integer $width New width of the frame (must be an even number).
+ * @param integer $height New height of the frame (must be an even number).
+ * @param integer $crop_top Remove [croptop] rows of pixels from the top of the frame.
+ * @param integer $crop_bottom Remove [cropbottom] rows of pixels from the bottom of the frame.
+ * @param integer $crop_left Remove [cropleft] rows of pixels from the left of the frame.
+ * @param integer $crop_right Remove [cropright] rows of pixels from the right of the frame.
+ * @return boolean
+ */
+ public function resize($width, $height, $crop_top=false, $crop_bottom=false, $crop_left=false, $crop_right=false)
+ {
+// generate a GD resource
+ $this->_generateGDImageFromResource();
+// are we cropping?
+ if($crop_top !== false || $crop_bottom !== false || $crop_left !== false || $crop_right !== false)
+ {
+// crop and check it went ok
+ if(!$this->crop($crop_top, $crop_bottom, $crop_left, $crop_right))
+ {
+ return false;
+ }
+ }
+// check the width and height
+ if($width <= 0 || $height <= 0)
+ {
+ return false;
+ }
+// now resize what we have
+ $resize_resource = imagecreatetruecolor($width, $height);
+// copy the portion we want
+ imagecopyresampled($resize_resource, $this->_gd_resource, 0, 0, 0, 0, $width, $height, $this->_width, $this->_height);
+// destroy the old crop resource to free up memory
+ imagedestroy($this->_gd_resource);
+// save the new resource
+ $this->_gd_resource = $resize_resource;
+// update the saved width and height
+ $this->_width = $width;
+ $this->_height = $height;
+ return true;
+ }
+
+ /**
+ * Crop the frame.
+ * @access public
+ * @param integer $crop_top Remove [croptop] rows of pixels from the top of the frame.
+ * @param integer $crop_bottom Remove [cropbottom] rows of pixels from the bottom of the frame.
+ * @param integer $crop_left Remove [cropleft] rows of pixels from the left of the frame.
+ * @param integer $crop_right Remove [cropright] rows of pixels from the right of the frame.
+ * @return boolean
+ */
+ public function crop($crop_top=false, $crop_bottom=false, $crop_left=false, $crop_right=false)
+ {
+// generate a GD resource
+ $this->_generateGDImageFromResource();
+// work out the newwidth and height and positions
+ $w = $this->_width;
+ $h = $this->_height;
+ $x = 0;
+ $y = 0;
+ $x_bottom_chord = 0;
+ if($crop_top !== false)
+ {
+ $x = $crop_top;
+ $h -= $crop_top;
+ }
+ if($crop_bottom !== false)
+ {
+ $h -= $crop_bottom;
+ }
+ if($crop_left !== false)
+ {
+ $y = $crop_left;
+ $w -= $crop_left;
+ }
+ if($crop_right !== false)
+ {
+ $w -= $crop_left;
+ }
+// is the width and height greater than 0
+ if($w < 0 || $h < 0)
+ {
+ return false;
+ }
+// create the new image resource
+ $crop_resource = imagecreatetruecolor($w, $h);
+// copy the portion we want
+ imagecopyresampled($crop_resource, $this->_gd_resource, 0, 0, $x, $y, $w, $h, $w, $h);
+// destroy the old resource to free up memory
+ imagedestroy($this->_gd_resource);
+// save the new resource
+ $this->_gd_resource = $crop_resource;
+// update the saved width and height
+ $this->_width = $w;
+ $this->_height = $h;
+ return true;
+ }
+
+ /**
+ * Returns a truecolor GD image of the frame.
+ * @access public
+ * @return resource Returns a GD resource.
+ */
+ public function toGDImage()
+ {
+ $this->_generateGDImageFromResource()
+ return $this->_gd_resource;
+ }
+
+ /**
+ * Returns a GD resource from the current resource type.
+ * @access private
+ */
+ private function _generateGDImageFromResource()
+ {
+// don't do this if the gd resource is already defined
+ if($this->_gd_resource === null)
+ {
+ switch($this->_resource_type)
+ {
+ case 'toolkit' :
+ $result = $this->_resource->execute(false, false);
+// check the return value in-case of error
+ if($result !== PHPVideoToolkit::RESULT_OK)
+ {
+// throw error
+ }
+ $img = array_shift($this->_resource->getLastOutput());
+ if(!is_file($img))
+ {
+// throw error
+ }
+ $this->_gd_resource = imagecreatefromjpeg($img);
+ break;
+
+ case 'file' :
+ $path_info = pathinfo($this->_resource);
+ switch(strtolower($path_info['extension']))
+ {
+ case 'jpeg' :
+ case 'jpg' :
+ $this->_gd_resource = imagecreatefromjpeg($this->_resource);
+ break;
+ case 'gif' :
+ $this->_gd_resource = imagecreatefromgif($this->_resource);
+ break;
+ case 'png' :
+ $this->_gd_resource = imagecreatefrompng($this->_resource);
+ break;
+ default :
+// throw error
+ }
+ break;
+
+ case 'gd' :
+// resource is already gd
+ break;
+ }
+ }
+ }
+
+ }