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https://github.com/opencv/opencv.git
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312 lines
11 KiB
C++
312 lines
11 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// Intel License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000, Intel Corporation, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of Intel Corporation may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "precomp.hpp"
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#include <string>
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#if defined HAVE_FFMPEG && !defined _WIN32
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#include "cap_ffmpeg_impl.hpp"
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#else
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#include "cap_ffmpeg_api.hpp"
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#endif
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static CvCreateFileCapture_Plugin icvCreateFileCapture_FFMPEG_p = 0;
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static CvReleaseCapture_Plugin icvReleaseCapture_FFMPEG_p = 0;
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static CvGrabFrame_Plugin icvGrabFrame_FFMPEG_p = 0;
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static CvRetrieveFrame_Plugin icvRetrieveFrame_FFMPEG_p = 0;
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static CvSetCaptureProperty_Plugin icvSetCaptureProperty_FFMPEG_p = 0;
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static CvGetCaptureProperty_Plugin icvGetCaptureProperty_FFMPEG_p = 0;
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static CvCreateVideoWriter_Plugin icvCreateVideoWriter_FFMPEG_p = 0;
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static CvReleaseVideoWriter_Plugin icvReleaseVideoWriter_FFMPEG_p = 0;
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static CvWriteFrame_Plugin icvWriteFrame_FFMPEG_p = 0;
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static cv::Mutex _icvInitFFMPEG_mutex;
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#if defined _WIN32
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static const HMODULE cv_GetCurrentModule()
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{
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HMODULE h = 0;
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#if _WIN32_WINNT >= 0x0501
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::GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
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reinterpret_cast<LPCTSTR>(cv_GetCurrentModule),
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&h);
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#endif
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return h;
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}
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#endif
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class icvInitFFMPEG
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{
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public:
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static void Init()
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{
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cv::AutoLock al(_icvInitFFMPEG_mutex);
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static icvInitFFMPEG init;
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}
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private:
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#if defined _WIN32
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HMODULE icvFFOpenCV;
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~icvInitFFMPEG()
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{
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if (icvFFOpenCV)
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{
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FreeLibrary(icvFFOpenCV);
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icvFFOpenCV = 0;
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}
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}
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#endif
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icvInitFFMPEG()
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{
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#if defined _WIN32
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const wchar_t* module_name_ = L"opencv_ffmpeg"
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CVAUX_STRW(CV_MAJOR_VERSION) CVAUX_STRW(CV_MINOR_VERSION) CVAUX_STRW(CV_SUBMINOR_VERSION)
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#if (defined _MSC_VER && defined _M_X64) || (defined __GNUC__ && defined __x86_64__)
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L"_64"
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#endif
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L".dll";
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# ifdef WINRT
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icvFFOpenCV = LoadPackagedLibrary( module_name_, 0 );
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# else
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const std::wstring module_name(module_name_);
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const wchar_t* ffmpeg_env_path = _wgetenv(L"OPENCV_FFMPEG_DLL_DIR");
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std::wstring module_path =
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ffmpeg_env_path
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? ((std::wstring(ffmpeg_env_path) + L"\\") + module_name)
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: module_name;
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icvFFOpenCV = LoadLibraryW(module_path.c_str());
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if(!icvFFOpenCV && !ffmpeg_env_path)
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{
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HMODULE m = cv_GetCurrentModule();
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if (m)
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{
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wchar_t path[MAX_PATH];
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const size_t path_size = sizeof(path)/sizeof(*path);
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size_t sz = GetModuleFileNameW(m, path, path_size);
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/* Don't handle paths longer than MAX_PATH until that becomes a real issue */
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if (sz > 0 && sz < path_size)
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{
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wchar_t* s = wcsrchr(path, L'\\');
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if (s)
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{
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s[0] = 0;
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module_path = (std::wstring(path) + L"\\") + module_name;
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icvFFOpenCV = LoadLibraryW(module_path.c_str());
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}
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}
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}
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}
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# endif
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if( icvFFOpenCV )
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{
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icvCreateFileCapture_FFMPEG_p =
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(CvCreateFileCapture_Plugin)GetProcAddress(icvFFOpenCV, "cvCreateFileCapture_FFMPEG");
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icvReleaseCapture_FFMPEG_p =
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(CvReleaseCapture_Plugin)GetProcAddress(icvFFOpenCV, "cvReleaseCapture_FFMPEG");
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icvGrabFrame_FFMPEG_p =
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(CvGrabFrame_Plugin)GetProcAddress(icvFFOpenCV, "cvGrabFrame_FFMPEG");
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icvRetrieveFrame_FFMPEG_p =
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(CvRetrieveFrame_Plugin)GetProcAddress(icvFFOpenCV, "cvRetrieveFrame_FFMPEG");
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icvSetCaptureProperty_FFMPEG_p =
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(CvSetCaptureProperty_Plugin)GetProcAddress(icvFFOpenCV, "cvSetCaptureProperty_FFMPEG");
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icvGetCaptureProperty_FFMPEG_p =
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(CvGetCaptureProperty_Plugin)GetProcAddress(icvFFOpenCV, "cvGetCaptureProperty_FFMPEG");
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icvCreateVideoWriter_FFMPEG_p =
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(CvCreateVideoWriter_Plugin)GetProcAddress(icvFFOpenCV, "cvCreateVideoWriter_FFMPEG");
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icvReleaseVideoWriter_FFMPEG_p =
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(CvReleaseVideoWriter_Plugin)GetProcAddress(icvFFOpenCV, "cvReleaseVideoWriter_FFMPEG");
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icvWriteFrame_FFMPEG_p =
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(CvWriteFrame_Plugin)GetProcAddress(icvFFOpenCV, "cvWriteFrame_FFMPEG");
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#if 0
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if( icvCreateFileCapture_FFMPEG_p != 0 &&
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icvReleaseCapture_FFMPEG_p != 0 &&
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icvGrabFrame_FFMPEG_p != 0 &&
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icvRetrieveFrame_FFMPEG_p != 0 &&
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icvSetCaptureProperty_FFMPEG_p != 0 &&
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icvGetCaptureProperty_FFMPEG_p != 0 &&
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icvCreateVideoWriter_FFMPEG_p != 0 &&
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icvReleaseVideoWriter_FFMPEG_p != 0 &&
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icvWriteFrame_FFMPEG_p != 0 )
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{
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printf("Successfully initialized ffmpeg plugin!\n");
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}
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else
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{
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printf("Failed to load FFMPEG plugin: module handle=%p\n", icvFFOpenCV);
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}
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#endif
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}
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#elif defined HAVE_FFMPEG
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icvCreateFileCapture_FFMPEG_p = (CvCreateFileCapture_Plugin)cvCreateFileCapture_FFMPEG;
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icvReleaseCapture_FFMPEG_p = (CvReleaseCapture_Plugin)cvReleaseCapture_FFMPEG;
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icvGrabFrame_FFMPEG_p = (CvGrabFrame_Plugin)cvGrabFrame_FFMPEG;
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icvRetrieveFrame_FFMPEG_p = (CvRetrieveFrame_Plugin)cvRetrieveFrame_FFMPEG;
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icvSetCaptureProperty_FFMPEG_p = (CvSetCaptureProperty_Plugin)cvSetCaptureProperty_FFMPEG;
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icvGetCaptureProperty_FFMPEG_p = (CvGetCaptureProperty_Plugin)cvGetCaptureProperty_FFMPEG;
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icvCreateVideoWriter_FFMPEG_p = (CvCreateVideoWriter_Plugin)cvCreateVideoWriter_FFMPEG;
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icvReleaseVideoWriter_FFMPEG_p = (CvReleaseVideoWriter_Plugin)cvReleaseVideoWriter_FFMPEG;
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icvWriteFrame_FFMPEG_p = (CvWriteFrame_Plugin)cvWriteFrame_FFMPEG;
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#endif
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}
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};
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class CvCapture_FFMPEG_proxy :
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public CvCapture
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{
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public:
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CvCapture_FFMPEG_proxy() { ffmpegCapture = 0; }
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virtual ~CvCapture_FFMPEG_proxy() { close(); }
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virtual double getProperty(int propId) const
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{
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return ffmpegCapture ? icvGetCaptureProperty_FFMPEG_p(ffmpegCapture, propId) : 0;
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}
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virtual bool setProperty(int propId, double value)
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{
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return ffmpegCapture ? icvSetCaptureProperty_FFMPEG_p(ffmpegCapture, propId, value)!=0 : false;
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}
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virtual bool grabFrame()
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{
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return ffmpegCapture ? icvGrabFrame_FFMPEG_p(ffmpegCapture)!=0 : false;
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}
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virtual IplImage* retrieveFrame(int)
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{
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unsigned char* data = 0;
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int step=0, width=0, height=0, cn=0;
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if (!ffmpegCapture ||
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!icvRetrieveFrame_FFMPEG_p(ffmpegCapture, &data, &step, &width, &height, &cn))
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return 0;
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cvInitImageHeader(&frame, cvSize(width, height), 8, cn);
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cvSetData(&frame, data, step);
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return &frame;
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}
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virtual bool open( const char* filename )
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{
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icvInitFFMPEG::Init();
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close();
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if( !icvCreateFileCapture_FFMPEG_p )
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return false;
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ffmpegCapture = icvCreateFileCapture_FFMPEG_p( filename );
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return ffmpegCapture != 0;
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}
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virtual void close()
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{
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if( ffmpegCapture && icvReleaseCapture_FFMPEG_p )
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icvReleaseCapture_FFMPEG_p( &ffmpegCapture );
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assert( ffmpegCapture == 0 );
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ffmpegCapture = 0;
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}
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protected:
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void* ffmpegCapture;
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IplImage frame;
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};
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CvCapture* cvCreateFileCapture_FFMPEG_proxy(const char * filename)
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{
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CvCapture_FFMPEG_proxy* result = new CvCapture_FFMPEG_proxy;
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if( result->open( filename ))
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return result;
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delete result;
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return 0;
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}
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class CvVideoWriter_FFMPEG_proxy :
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public CvVideoWriter
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{
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public:
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CvVideoWriter_FFMPEG_proxy() { ffmpegWriter = 0; }
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virtual ~CvVideoWriter_FFMPEG_proxy() { close(); }
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virtual bool writeFrame( const IplImage* image )
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{
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if(!ffmpegWriter)
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return false;
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CV_Assert(image->depth == 8);
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return icvWriteFrame_FFMPEG_p(ffmpegWriter, (const uchar*)image->imageData,
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image->widthStep, image->width, image->height, image->nChannels, image->origin) !=0;
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}
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virtual bool open( const char* filename, int fourcc, double fps, CvSize frameSize, bool isColor )
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{
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icvInitFFMPEG::Init();
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close();
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if( !icvCreateVideoWriter_FFMPEG_p )
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return false;
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ffmpegWriter = icvCreateVideoWriter_FFMPEG_p( filename, fourcc, fps, frameSize.width, frameSize.height, isColor );
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return ffmpegWriter != 0;
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}
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virtual void close()
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{
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if( ffmpegWriter && icvReleaseVideoWriter_FFMPEG_p )
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icvReleaseVideoWriter_FFMPEG_p( &ffmpegWriter );
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assert( ffmpegWriter == 0 );
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ffmpegWriter = 0;
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}
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protected:
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void* ffmpegWriter;
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};
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CvVideoWriter* cvCreateVideoWriter_FFMPEG_proxy( const char* filename, int fourcc,
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double fps, CvSize frameSize, int isColor )
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{
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CvVideoWriter_FFMPEG_proxy* result = new CvVideoWriter_FFMPEG_proxy;
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if( result->open( filename, fourcc, fps, frameSize, isColor != 0 ))
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return result;
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delete result;
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return 0;
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}
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