1 /* This file is part of the Pangolin Project. 2 * http://github.com/stevenlovegrove/Pangolin 3 * 4 * Copyright (c) 2013 Steven Lovegrove 5 * 6 * Permission is hereby granted, free of charge, to any person 7 * obtaining a copy of this software and associated documentation 8 * files (the "Software"), to deal in the Software without 9 * restriction, including without limitation the rights to use, 10 * copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following 13 * conditions: 14 * 15 * The above copyright notice and this permission notice shall be 16 * included in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 20 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 22 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 23 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 25 * OTHER DEALINGS IN THE SOFTWARE. 26 */ 27 28 #pragma once 29 30 #include <pangolin/video/video.h> 31 #include <vector> 32 33 namespace pangolin 34 { 35 36 class PANGOLIN_EXPORT TruncateVideo 37 : public VideoInterface, public VideoFilterInterface 38 { 39 public: 40 TruncateVideo(std::unique_ptr<VideoInterface>& videoin, size_t begin, size_t end); 41 42 ~TruncateVideo(); 43 44 size_t SizeBytes() const; 45 46 const std::vector<StreamInfo>& Streams() const; 47 48 void Start(); 49 50 void Stop(); 51 52 bool GrabNext( unsigned char* image, bool wait = true ); 53 54 bool GrabNewest( unsigned char* image, bool wait = true ); 55 56 std::vector<VideoInterface*>& InputStreams(); 57 58 protected: 59 std::unique_ptr<VideoInterface> src; 60 std::vector<VideoInterface*> videoin; 61 std::vector<StreamInfo> streams; 62 63 size_t begin; 64 size_t end; 65 size_t next_frame_to_grab; 66 GetVideoPlaybackInterface()67 inline VideoPlaybackInterface* GetVideoPlaybackInterface(){ return dynamic_cast<VideoPlaybackInterface*>(src.get()); } 68 }; 69 70 71 } 72