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Open Source Computer Vision Library
https://opencv.org/
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275 lines
10 KiB
275 lines
10 KiB
/*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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#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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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 || 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 || defined _WIN32 |
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# ifdef WINRT |
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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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icvFFOpenCV = LoadPackagedLibrary( module_name, 0 ); |
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# else |
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const char* module_name = "opencv_ffmpeg" |
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CVAUX_STR(CV_MAJOR_VERSION) CVAUX_STR(CV_MINOR_VERSION) CVAUX_STR(CV_SUBMINOR_VERSION) |
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#if (defined _MSC_VER && defined _M_X64) || (defined __GNUC__ && defined __x86_64__) |
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"_64" |
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#endif |
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".dll"; |
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icvFFOpenCV = LoadLibrary( module_name ); |
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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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