223 lines
8.3 KiB
C++
223 lines
8.3 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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extern "C"
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{
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typedef void* (*CvCreateFileCapture_Plugin)( const char* filename );
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typedef void* (*CvCreateCameraCapture_Plugin)( int index );
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typedef int (*CvGrabFrame_Plugin)( void* capture_handle );
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typedef IplImage* (*CvRetrieveFrame_Plugin)( void* capture_handle, int );
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typedef int (*CvSetCaptureProperty_Plugin)( void* capture_handle, int prop_id, double value );
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typedef double (*CvGetCaptureProperty_Plugin)( void* capture_handle, int prop_id );
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typedef void (*CvReleaseCapture_Plugin)( void** capture_handle );
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typedef void* (*CvCreateVideoWriter_Plugin)( const char* filename, int fourcc,
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double fps, CvSize frameSize, int isColor );
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typedef int (*CvWriteFrame_Plugin)( void* writer_handle, const IplImage* frame );
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typedef void (*CvReleaseVideoWriter_Plugin)( void** writer );
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}
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static HMODULE icvFFOpenCV = 0;
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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 void
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icvInitFFMPEG(void)
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{
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static int ffmpegInitialized = 0;
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if( !ffmpegInitialized )
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{
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#ifdef __MINGW32__
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#define ffopencv_prefix "lib"
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#else
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#define ffopencv_prefix ""
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#endif
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#if defined(_DEBUG)
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#define ffopencv_suffix_dbg "d"
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#else
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#define ffopencv_suffix_dbg ""
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#endif
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#if defined EM64T
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#define ffopencv_suffix "_64"
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#else
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#define ffopencv_suffix ""
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#endif
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#define ffopencv_name_m2(a,b,c) ffopencv_prefix "opencv_ffmpeg" #a #b #c ffopencv_suffix ffopencv_suffix_dbg ".dll"
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#define ffopencv_name_m(a,b,c) ffopencv_name_m2(a,b,c)
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const char* ffopencv_name =
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ffopencv_name_m(CV_MAJOR_VERSION,CV_MINOR_VERSION,CV_SUBMINOR_VERSION);
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icvFFOpenCV = LoadLibrary( ffopencv_name );
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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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}
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ffmpegInitialized = 1;
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}
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}
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class CvCapture_FFMPEG_proxy : 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)
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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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return ffmpegCapture ? icvRetrieveFrame_FFMPEG_p(ffmpegCapture,0) : 0;
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}
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virtual bool open( const char* filename )
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{
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close();
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icvInitFFMPEG();
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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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};
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CvCapture* cvCreateFileCapture_Win32(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 cvCreateFileCapture_VFW(filename);
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}
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class CvVideoWriter_FFMPEG_proxy : 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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return ffmpegWriter ? icvWriteFrame_FFMPEG_p(ffmpegWriter, image)!=0 : false;
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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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close();
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icvInitFFMPEG();
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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, 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_Win32( 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 cvCreateVideoWriter_VFW(filename, fourcc, fps, frameSize, isColor);
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}
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