Added a library for determining FLV height and width.
This commit is contained in:
rWatcher
parent
a741356f5e
commit
b3e5fb6faa
@ -23,6 +23,9 @@
|
||||
*
|
||||
* Note: by design, this class does not do any permission checking.
|
||||
*/
|
||||
|
||||
include MODPATH . "noffmpeg/libraries/MP4Info.php";
|
||||
|
||||
class movie_Core {
|
||||
static function get_edit_form($movie) {
|
||||
$form = new Forge("movies/update/$movie->id", "", "post", array("id" => "g-edit-movie-form"));
|
||||
@ -113,7 +116,17 @@ class movie_Core {
|
||||
$extension = isset($pi["extension"]) ? $pi["extension"] : "flv"; // No extension? Assume FLV.
|
||||
$mime_type = in_array(strtolower($extension), array("mp4", "m4v")) ?
|
||||
"video/mp4" : "video/x-flv";
|
||||
return array(320, 240, $mime_type, $extension);
|
||||
$vid_width = 320;
|
||||
$vid_height = 240;
|
||||
if (strtolower($extension) == "flv") {
|
||||
$flvinfo = new FLVMetaData($file_path);
|
||||
$info = $flvinfo->getMetaData();
|
||||
if (($info["width"] != "") && ($info["height"] != "")) {
|
||||
$vid_width = $info["width"];
|
||||
$vid_height = $info["height"];
|
||||
}
|
||||
}
|
||||
return array($vid_width, $vid_height, $mime_type, $extension);
|
||||
//throw new Exception("@todo MISSING_FFMPEG");
|
||||
// END rWatcher Edit.
|
||||
}
|
||||
|
||||
194
modules/noffmpeg/libraries/FLVMetaData.php
Normal file
194
modules/noffmpeg/libraries/FLVMetaData.php
Normal file
@ -0,0 +1,194 @@
|
||||
<?php
|
||||
/**
|
||||
* FLVMetaData - This tiny class is provided to parse FLV file header and
|
||||
* get the most common metadata like the width, height, framerate, duration and etc.
|
||||
* for more information see http://www.adobe.com/devnet/flv/
|
||||
*
|
||||
* Note: Metadata fileds might be dependent upon the software used to create the FLV.
|
||||
*
|
||||
* -----------------------------------------------------------------------------
|
||||
* LICENSE:
|
||||
*
|
||||
* FLVMetaData is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* FLVMetaData is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with FLVMetaData. If not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
* @author Amin Saeedi, <amin.w3dev@gmail.com>
|
||||
* @copyright Copyright (c) 2009, Amin Saeedi
|
||||
* @version 1.0
|
||||
*
|
||||
*/
|
||||
class FLVMetaData {
|
||||
private $buffer;
|
||||
private $metaData;
|
||||
private $fileName;
|
||||
private $typeFlagsAudio;
|
||||
private $typeFlagsVideo;
|
||||
|
||||
public $VCidMap = array(
|
||||
2=>"Sorenson H.263",
|
||||
3=>"Screen Video",
|
||||
4=>"VP6",
|
||||
5=>"VP6 with Alpha channel",
|
||||
); //Video Codec ID(s)
|
||||
|
||||
public $ACidMap = array(
|
||||
"Linear PCM, platform endian",
|
||||
"ADPCM",
|
||||
"MP3",
|
||||
"Linear PCM, little endian",
|
||||
"Nellymoser 16-kHz Mono",
|
||||
"Nellymoser 8-kHz Mono",
|
||||
"Nellymoser",
|
||||
"G.711 A-law logarithmic PCM",
|
||||
"G.711 mu-law logarithmic PCM",
|
||||
"reserved",
|
||||
"AAC",
|
||||
"Speex",
|
||||
14=>"MP3 8-Khz",
|
||||
15=>"Device-specific sound"
|
||||
); //Audio Codec ID(s)
|
||||
|
||||
/**
|
||||
* CONSTRUCTOR : initialize class members
|
||||
*
|
||||
* @param string $flv : flv file path
|
||||
*/
|
||||
public function __construct($flv) {
|
||||
$this->fileName = $flv;
|
||||
$this->metaData = array(
|
||||
"duration"=>null,
|
||||
"size"=>null,
|
||||
"framerate"=>null,
|
||||
"width"=>null,
|
||||
"height"=>null,
|
||||
"videodatarate"=>null,
|
||||
"audiodatarate"=>null,
|
||||
"audiodelay"=>null,
|
||||
"audiosamplesize"=>null,
|
||||
"audiosamplerate"=>null,
|
||||
"audiocodecid"=>null,
|
||||
"videocodecid"=>null,
|
||||
"version"=>null,
|
||||
"headersize"=>0
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets metadata of FLV file
|
||||
*
|
||||
* @return array $this->metaData : matadata of FLV
|
||||
*/
|
||||
public function getMetaData(){
|
||||
if(!file_exists($this->fileName)){
|
||||
echo "Error! {$this->fileName} does not exist.<br />";
|
||||
return false;
|
||||
}
|
||||
if(!is_readable($this->fileName)){
|
||||
echo "Error! Could not read the file. Check the file permissions.<br />";
|
||||
return false;
|
||||
}
|
||||
$f = @fopen($this->fileName,"rb");
|
||||
if(!$f){
|
||||
echo "Unknown Error! Could not read the file.<br />";
|
||||
return;
|
||||
}
|
||||
$signature = fread($f,3);
|
||||
if($signature != "FLV"){
|
||||
echo "Error! Wrong file format.";
|
||||
return false;
|
||||
}
|
||||
$this->metaData["version"] = ord(fread($f,1));
|
||||
$this->metaData["size"] = filesize($this->fileName);
|
||||
|
||||
$flags = ord(fread($f,1));
|
||||
$flags = sprintf("%'04b", $flags);
|
||||
$this->typeFlagsAudio = substr($flags, 1, 1);
|
||||
$this->typeFlagsVideo = substr($flags, 3, 1);
|
||||
|
||||
for ($i=0; $i < 4; $i++) {
|
||||
$this->metaData["headersize"] += ord(fread($f,1)) ;
|
||||
}
|
||||
|
||||
$this->buffer = fread($f, 400);
|
||||
fclose($f);
|
||||
if(strpos($this->buffer, "onMetaData") === false){
|
||||
echo "Error! No MetaData Exists.";
|
||||
return false;
|
||||
}
|
||||
|
||||
foreach($this->metaData as $k=>$v){
|
||||
$this->parseBuffer($k);
|
||||
}
|
||||
return $this->metaData;
|
||||
}
|
||||
|
||||
/**
|
||||
* Takes a field name of metadata, retrieve it's value and set it in $this->metaData
|
||||
*
|
||||
* @param string $fieldName : matadata field name
|
||||
*/
|
||||
private function parseBuffer($fieldName){
|
||||
$fieldPos = strpos($this->buffer, $fieldName); //get the field position
|
||||
if($fieldPos !== false){
|
||||
$pos = $fieldPos + strlen($fieldName) + 1;
|
||||
$buffer = substr($this->buffer,$pos);
|
||||
|
||||
$d = "";
|
||||
for($i=0; $i < 8;$i++){
|
||||
$d .= sprintf("%08b", ord(substr($buffer,$i,1)));
|
||||
}
|
||||
|
||||
$total = self::bin2Double($d);
|
||||
$this->metaData[$fieldName] = $total;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates double-precision value of given binary string
|
||||
* (IEEE Standard 754 - Floating Point Numbers)
|
||||
*
|
||||
* @param string binary data $strBin
|
||||
* @return Float calculated double-precision number
|
||||
*/
|
||||
public static function bin2Double($strBin){
|
||||
$sb = substr($strBin, 0, 1); // first bit is sign bit
|
||||
$exponent = substr($strBin, 1, 11); // 11 bits exponent
|
||||
$fraction = "1".substr($strBin, 12, 52); //52 bits fraction (1.F)
|
||||
|
||||
$s = pow(-1, bindec($sb));
|
||||
$dec = pow(2, (bindec($exponent) - 1023)); //Decode exponent
|
||||
|
||||
if($dec == 2047){
|
||||
if($fraction == 0){
|
||||
if($s==0){
|
||||
echo "Infinity";
|
||||
}else{
|
||||
echo "-Infinity";
|
||||
}
|
||||
}else{
|
||||
echo "NaN";
|
||||
}
|
||||
}
|
||||
|
||||
if($dec > 0 && $dec < 2047){
|
||||
$t = 1;
|
||||
for($i=1 ; $i <= 53; $i++){
|
||||
$t += ((int)substr($fraction, $i, 1)) * pow(2, -$i); //decode significand
|
||||
}
|
||||
$total = $s * $t * $dec ;
|
||||
return $total;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
?>
|
||||
Reference in New Issue
Block a user