1 /*M/////////////////////////////////////////////////////////////////////////////////////// 2 // 3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. 4 // 5 // By downloading, copying, installing or using the software you agree to this license. 6 // If you do not agree to this license, do not download, install, 7 // copy or use the software. 8 // 9 // 10 // License Agreement 11 // For Open Source Computer Vision Library 12 // 13 // Copyright (C) 2000-2008, Intel Corporation, all rights reserved. 14 // Copyright (C) 2009, Willow Garage Inc., all rights reserved. 15 // Copyright (C) 2013, OpenCV Foundation, all rights reserved. 16 // Third party copyrights are property of their respective owners. 17 // 18 // Redistribution and use in source and binary forms, with or without modification, 19 // are permitted provided that the following conditions are met: 20 // 21 // * Redistribution's of source code must retain the above copyright notice, 22 // this list of conditions and the following disclaimer. 23 // 24 // * Redistribution's in binary form must reproduce the above copyright notice, 25 // this list of conditions and the following disclaimer in the documentation 26 // and/or other materials provided with the distribution. 27 // 28 // * The name of the copyright holders may not be used to endorse or promote products 29 // derived from this software without specific prior written permission. 30 // 31 // This software is provided by the copyright holders and contributors "as is" and 32 // any express or implied warranties, including, but not limited to, the implied 33 // warranties of merchantability and fitness for a particular purpose are disclaimed. 34 // In no event shall the Intel Corporation or contributors be liable for any direct, 35 // indirect, incidental, special, exemplary, or consequential damages 36 // (including, but not limited to, procurement of substitute goods or services; 37 // loss of use, data, or profits; or business interruption) however caused 38 // and on any theory of liability, whether in contract, strict liability, 39 // or tort (including negligence or otherwise) arising in any way out of 40 // the use of this software, even if advised of the possibility of such damage. 41 // 42 //M*/ 43 44 #ifndef __VIDEO_PARSER_HPP__ 45 #define __VIDEO_PARSER_HPP__ 46 47 #include <nvcuvid.h> 48 49 #include "opencv2/core/private.cuda.hpp" 50 #include "opencv2/cudacodec.hpp" 51 #include "frame_queue.hpp" 52 #include "video_decoder.hpp" 53 54 namespace cv { namespace cudacodec { namespace detail 55 { 56 57 class VideoParser 58 { 59 public: 60 VideoParser(VideoDecoder* videoDecoder, FrameQueue* frameQueue); 61 ~VideoParser()62 ~VideoParser() 63 { 64 cuvidDestroyVideoParser(parser_); 65 } 66 67 bool parseVideoData(const unsigned char* data, size_t size, bool endOfStream); 68 hasError() const69 bool hasError() const { return hasError_; } 70 71 private: 72 VideoDecoder* videoDecoder_; 73 FrameQueue* frameQueue_; 74 CUvideoparser parser_; 75 int unparsedPackets_; 76 volatile bool hasError_; 77 78 // Called when the decoder encounters a video format change (or initial sequence header) 79 // This particular implementation of the callback returns 0 in case the video format changes 80 // to something different than the original format. Returning 0 causes a stop of the app. 81 static int CUDAAPI HandleVideoSequence(void* pUserData, CUVIDEOFORMAT* pFormat); 82 83 // Called by the video parser to decode a single picture 84 // Since the parser will deliver data as fast as it can, we need to make sure that the picture 85 // index we're attempting to use for decode is no longer used for display 86 static int CUDAAPI HandlePictureDecode(void* pUserData, CUVIDPICPARAMS* pPicParams); 87 88 // Called by the video parser to display a video frame (in the case of field pictures, there may be 89 // 2 decode calls per 1 display call, since two fields make up one frame) 90 static int CUDAAPI HandlePictureDisplay(void* pUserData, CUVIDPARSERDISPINFO* pPicParams); 91 }; 92 93 }}} 94 95 #endif // __VIDEO_PARSER_HPP__ 96