ffmpge 多实例 播放HLS流 实现马赛克

// // Video.h // iFrameExtractor // // Created by lajos on 1/10/10. // // Copyright 2010 Lajos Kamocsay // // lajos at codza dot com // // iFrameExtractor is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2.1 of the License, or (at your option) any later version. // // iFrameExtractor 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 // Lesser General Public License for more details. // #import <Foundation/Foundation.h> #include "libavformat/avformat.h" #include "libswscale/swscale.h" @interface VideoFrameExtractor : NSObject { AVFormatContext *pFormatCtx; AVCodecContext *pCodecCtx; AVFrame *pFrame; AVPacket packet; AVPicture picture; int videoStream; struct SwsContext *img_convert_ctx; int sourceWidth, sourceHeight; int outputWidth, outputHeight; UIImage *currentImage; double duration; double currentTime; } /* Last decoded picture as UIImage */ @property (nonatomic, readonly) UIImage *currentImage; /* Size of video frame */ @property (nonatomic, readonly) int sourceWidth, sourceHeight; /* Output image size. Set to the source size by default. */ @property (nonatomic) int outputWidth, outputHeight; /* Length of video in seconds */ @property (nonatomic, readonly) double duration; /* Current time of video in seconds */ @property (nonatomic, readonly) double currentTime; /* Initialize with movie at moviePath. Output dimensions are set to source dimensions. */ -(id)initWithVideo:(NSString *)moviePath; /* Read the next frame from the video stream. Returns false if no frame read (video over). */ -(BOOL)stepFrame; /* Seek to closest keyframe near specified time */ -(void)seekTime:(double)seconds; @end