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#include "precomp.hpp" 45 46#ifdef HAVE_NVCUVID 47 48using namespace cv; 49using namespace cv::cudacodec; 50using namespace cv::cudacodec::detail; 51 52namespace 53{ 54 Create_InputMediaStream_FFMPEG_Plugin create_InputMediaStream_FFMPEG_p = 0; 55 Release_InputMediaStream_FFMPEG_Plugin release_InputMediaStream_FFMPEG_p = 0; 56 Read_InputMediaStream_FFMPEG_Plugin read_InputMediaStream_FFMPEG_p = 0; 57 58 bool init_MediaStream_FFMPEG() 59 { 60 static bool initialized = 0; 61 62 if (!initialized) 63 { 64 #if defined WIN32 || defined _WIN32 65 const char* module_name = "opencv_ffmpeg" 66 CVAUX_STR(CV_VERSION_MAJOR) CVAUX_STR(CV_VERSION_MINOR) CVAUX_STR(CV_VERSION_REVISION) 67 #if (defined _MSC_VER && defined _M_X64) || (defined __GNUC__ && defined __x86_64__) 68 "_64" 69 #endif 70 ".dll"; 71 72 static HMODULE cvFFOpenCV = LoadLibrary(module_name); 73 74 if (cvFFOpenCV) 75 { 76 create_InputMediaStream_FFMPEG_p = 77 (Create_InputMediaStream_FFMPEG_Plugin)GetProcAddress(cvFFOpenCV, "create_InputMediaStream_FFMPEG"); 78 release_InputMediaStream_FFMPEG_p = 79 (Release_InputMediaStream_FFMPEG_Plugin)GetProcAddress(cvFFOpenCV, "release_InputMediaStream_FFMPEG"); 80 read_InputMediaStream_FFMPEG_p = 81 (Read_InputMediaStream_FFMPEG_Plugin)GetProcAddress(cvFFOpenCV, "read_InputMediaStream_FFMPEG"); 82 83 initialized = create_InputMediaStream_FFMPEG_p != 0 && release_InputMediaStream_FFMPEG_p != 0 && read_InputMediaStream_FFMPEG_p != 0; 84 } 85 #elif defined HAVE_FFMPEG 86 create_InputMediaStream_FFMPEG_p = create_InputMediaStream_FFMPEG; 87 release_InputMediaStream_FFMPEG_p = release_InputMediaStream_FFMPEG; 88 read_InputMediaStream_FFMPEG_p = read_InputMediaStream_FFMPEG; 89 90 initialized = true; 91 #endif 92 } 93 94 return initialized; 95 } 96} 97 98cv::cudacodec::detail::FFmpegVideoSource::FFmpegVideoSource(const String& fname) : 99 stream_(0) 100{ 101 CV_Assert( init_MediaStream_FFMPEG() ); 102 103 int codec; 104 int chroma_format; 105 int width; 106 int height; 107 108 stream_ = create_InputMediaStream_FFMPEG_p(fname.c_str(), &codec, &chroma_format, &width, &height); 109 if (!stream_) 110 CV_Error(Error::StsUnsupportedFormat, "Unsupported video source"); 111 112 format_.codec = static_cast<Codec>(codec); 113 format_.chromaFormat = static_cast<ChromaFormat>(chroma_format); 114 format_.width = width; 115 format_.height = height; 116} 117 118cv::cudacodec::detail::FFmpegVideoSource::~FFmpegVideoSource() 119{ 120 if (stream_) 121 release_InputMediaStream_FFMPEG_p(stream_); 122} 123 124FormatInfo cv::cudacodec::detail::FFmpegVideoSource::format() const 125{ 126 return format_; 127} 128 129bool cv::cudacodec::detail::FFmpegVideoSource::getNextPacket(unsigned char** data, int* size, bool* bEndOfFile) 130{ 131 int endOfFile; 132 133 int res = read_InputMediaStream_FFMPEG_p(stream_, data, size, &endOfFile); 134 135 *bEndOfFile = (endOfFile != 0); 136 return res != 0; 137} 138 139#endif // HAVE_CUDA 140