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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of the PHP-FFmpeg-video-streaming package.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (c) Amin Yazdanpanah <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Streaming;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class HLSPlaylist  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $filename  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $reps  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $manifests  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $stream_info  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public static function save(string $filename, array $reps, string $manifests, array $stream_info = []): void  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        file_put_contents($filename, static::contents($reps, $manifests, $stream_info));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $reps  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $manifests  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $stream_info  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function contents(array $reps, string $manifests, array $stream_info = []): string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $content = ["#EXTM3U", "#EXT-X-VERSION:3"];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($reps as $rep) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $content[] = static::streamInfo($rep, $stream_info);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $content[] = $manifests . "_" . $rep->getHeight() . "p.m3u8";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return implode(PHP_EOL, $content);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Representation $rep  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $extra  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function streamInfo(Representation $rep, array $extra = []): string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $ext_stream = '#EXT-X-STREAM-INF:';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $params = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            "BANDWIDTH=" . $rep->getKiloBitrate() * 1024,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            "RESOLUTION=" . $rep->getResize(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            "NAME=\"" . $rep->getHeight() . "\""  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $ext_stream . implode(",", array_merge($params, $extra)); | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  |