1 /*M///////////////////////////////////////////////////////////////////////////////////////
2 //
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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.
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42 //M*/
43
44 #include "precomp.hpp"
45
46 #ifdef HAVE_NVCUVID
47
48 using namespace cv;
49 using namespace cv::cudacodec;
50 using namespace cv::cudacodec::detail;
51
52 namespace
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
init_MediaStream_FFMPEG()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
FFmpegVideoSource(const String & fname)98 cv::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
~FFmpegVideoSource()118 cv::cudacodec::detail::FFmpegVideoSource::~FFmpegVideoSource()
119 {
120 if (stream_)
121 release_InputMediaStream_FFMPEG_p(stream_);
122 }
123
format() const124 FormatInfo cv::cudacodec::detail::FFmpegVideoSource::format() const
125 {
126 return format_;
127 }
128
getNextPacket(unsigned char ** data,int * size,bool * bEndOfFile)129 bool 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