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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// Intel License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000, Intel Corporation, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of Intel Corporation may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include "precomp.hpp"
#if !defined(HAVE_FFMPEG)
#error "Build configuration error"
#endif
#include <string>
#include "cap_ffmpeg_impl.hpp"
#define icvCreateFileCapture_FFMPEG_p cvCreateFileCapture_FFMPEG
#define icvReleaseCapture_FFMPEG_p cvReleaseCapture_FFMPEG
#define icvGrabFrame_FFMPEG_p cvGrabFrame_FFMPEG
#define icvRetrieveFrame_FFMPEG_p cvRetrieveFrame_FFMPEG
#define icvSetCaptureProperty_FFMPEG_p cvSetCaptureProperty_FFMPEG
#define icvGetCaptureProperty_FFMPEG_p cvGetCaptureProperty_FFMPEG
#define icvCreateVideoWriter_FFMPEG_p cvCreateVideoWriter_FFMPEG
#define icvReleaseVideoWriter_FFMPEG_p cvReleaseVideoWriter_FFMPEG
#define icvWriteFrame_FFMPEG_p cvWriteFrame_FFMPEG
namespace cv {
namespace {
class CvCapture_FFMPEG_proxy CV_FINAL : public cv::IVideoCapture
{
public:
CvCapture_FFMPEG_proxy() { ffmpegCapture = 0; }
CvCapture_FFMPEG_proxy(const cv::String& filename) { ffmpegCapture = 0; open(filename); }
virtual ~CvCapture_FFMPEG_proxy() { close(); }
virtual double getProperty(int propId) const CV_OVERRIDE
{
return ffmpegCapture ? icvGetCaptureProperty_FFMPEG_p(ffmpegCapture, propId) : 0;
}
virtual bool setProperty(int propId, double value) CV_OVERRIDE
{
return ffmpegCapture ? icvSetCaptureProperty_FFMPEG_p(ffmpegCapture, propId, value)!=0 : false;
}
virtual bool grabFrame() CV_OVERRIDE
{
return ffmpegCapture ? icvGrabFrame_FFMPEG_p(ffmpegCapture)!=0 : false;
}
virtual bool retrieveFrame(int, cv::OutputArray frame) CV_OVERRIDE
{
unsigned char* data = 0;
int step=0, width=0, height=0, cn=0;
if (!ffmpegCapture ||
!icvRetrieveFrame_FFMPEG_p(ffmpegCapture, &data, &step, &width, &height, &cn))
return false;
cv::Mat(height, width, CV_MAKETYPE(CV_8U, cn), data, step).copyTo(frame);
return true;
}
virtual bool open( const cv::String& filename )
{
close();
ffmpegCapture = icvCreateFileCapture_FFMPEG_p( filename.c_str() );
return ffmpegCapture != 0;
}
virtual void close()
{
if (ffmpegCapture)
icvReleaseCapture_FFMPEG_p( &ffmpegCapture );
CV_Assert(ffmpegCapture == 0);
ffmpegCapture = 0;
}
virtual bool isOpened() const CV_OVERRIDE { return ffmpegCapture != 0; }
virtual int getCaptureDomain() CV_OVERRIDE { return CV_CAP_FFMPEG; }
protected:
CvCapture_FFMPEG* ffmpegCapture;
};
} // namespace
cv::Ptr<cv::IVideoCapture> cvCreateFileCapture_FFMPEG_proxy(const std::string &filename)
{
cv::Ptr<CvCapture_FFMPEG_proxy> capture = cv::makePtr<CvCapture_FFMPEG_proxy>(filename);
if (capture && capture->isOpened())
return capture;
return cv::Ptr<cv::IVideoCapture>();
}
namespace {
class CvVideoWriter_FFMPEG_proxy CV_FINAL :
public cv::IVideoWriter
{
public:
CvVideoWriter_FFMPEG_proxy() { ffmpegWriter = 0; }
CvVideoWriter_FFMPEG_proxy(const cv::String& filename, int fourcc, double fps, cv::Size frameSize, bool isColor) { ffmpegWriter = 0; open(filename, fourcc, fps, frameSize, isColor); }
virtual ~CvVideoWriter_FFMPEG_proxy() { close(); }
int getCaptureDomain() const CV_OVERRIDE { return cv::CAP_FFMPEG; }
virtual void write(cv::InputArray image ) CV_OVERRIDE
{
if(!ffmpegWriter)
return;
CV_Assert(image.depth() == CV_8U);
icvWriteFrame_FFMPEG_p(ffmpegWriter, (const uchar*)image.getMat().ptr(), (int)image.step(), image.cols(), image.rows(), image.channels(), 0);
}
virtual bool open( const cv::String& filename, int fourcc, double fps, cv::Size frameSize, bool isColor )
{
close();
ffmpegWriter = icvCreateVideoWriter_FFMPEG_p( filename.c_str(), fourcc, fps, frameSize.width, frameSize.height, isColor );
return ffmpegWriter != 0;
}
virtual void close()
{
if (ffmpegWriter)
icvReleaseVideoWriter_FFMPEG_p( &ffmpegWriter );
CV_Assert(ffmpegWriter == 0);
ffmpegWriter = 0;
}
virtual double getProperty(int) const CV_OVERRIDE { return 0; }
virtual bool setProperty(int, double) CV_OVERRIDE { return false; }
virtual bool isOpened() const CV_OVERRIDE { return ffmpegWriter != 0; }
protected:
CvVideoWriter_FFMPEG* ffmpegWriter;
};
} // namespace
cv::Ptr<cv::IVideoWriter> cvCreateVideoWriter_FFMPEG_proxy(const std::string& filename, int fourcc, double fps, const cv::Size &frameSize, bool isColor)
{
cv::Ptr<CvVideoWriter_FFMPEG_proxy> writer = cv::makePtr<CvVideoWriter_FFMPEG_proxy>(filename, fourcc, fps, frameSize, isColor != 0);
if (writer && writer->isOpened())
return writer;
return cv::Ptr<cv::IVideoWriter>();
}
} // namespace
//==================================================================================================
#if defined(BUILD_PLUGIN)
#include "plugin_api.hpp"
namespace cv {
static
CvResult CV_API_CALL cv_capture_open(const char* filename, int camera_index, CV_OUT CvPluginCapture* handle)
{
if (!handle)
return CV_ERROR_FAIL;
*handle = NULL;
if (!filename)
return CV_ERROR_FAIL;
CV_UNUSED(camera_index);
CvCapture_FFMPEG_proxy *cap = 0;
try
{
cap = new CvCapture_FFMPEG_proxy(filename);
if (cap->isOpened())
{
*handle = (CvPluginCapture)cap;
return CV_ERROR_OK;
}
}
catch (...)
{
}
if (cap)
delete cap;
return CV_ERROR_FAIL;
}
static
CvResult CV_API_CALL cv_capture_release(CvPluginCapture handle)
{
if (!handle)
return CV_ERROR_FAIL;
CvCapture_FFMPEG_proxy* instance = (CvCapture_FFMPEG_proxy*)handle;
delete instance;
return CV_ERROR_OK;
}
static
CvResult CV_API_CALL cv_capture_get_prop(CvPluginCapture handle, int prop, CV_OUT double* val)
{
if (!handle)
return CV_ERROR_FAIL;
if (!val)
return CV_ERROR_FAIL;
try
{
CvCapture_FFMPEG_proxy* instance = (CvCapture_FFMPEG_proxy*)handle;
*val = instance->getProperty(prop);
return CV_ERROR_OK;
}
catch (...)
{
return CV_ERROR_FAIL;
}
}
static
CvResult CV_API_CALL cv_capture_set_prop(CvPluginCapture handle, int prop, double val)
{
if (!handle)
return CV_ERROR_FAIL;
try
{
CvCapture_FFMPEG_proxy* instance = (CvCapture_FFMPEG_proxy*)handle;
return instance->setProperty(prop, val) ? CV_ERROR_OK : CV_ERROR_FAIL;
}
catch(...)
{
return CV_ERROR_FAIL;
}
}
static
CvResult CV_API_CALL cv_capture_grab(CvPluginCapture handle)
{
if (!handle)
return CV_ERROR_FAIL;
try
{
CvCapture_FFMPEG_proxy* instance = (CvCapture_FFMPEG_proxy*)handle;
return instance->grabFrame() ? CV_ERROR_OK : CV_ERROR_FAIL;
}
catch(...)
{
return CV_ERROR_FAIL;
}
}
static
CvResult CV_API_CALL cv_capture_retrieve(CvPluginCapture handle, int stream_idx, cv_videoio_retrieve_cb_t callback, void* userdata)
{
if (!handle)
return CV_ERROR_FAIL;
try
{
CvCapture_FFMPEG_proxy* instance = (CvCapture_FFMPEG_proxy*)handle;
Mat img;
// TODO: avoid unnecessary copying
if (instance->retrieveFrame(stream_idx, img))
return callback(stream_idx, img.data, img.step, img.cols, img.rows, img.channels(), userdata);
return CV_ERROR_FAIL;
}
catch(...)
{
return CV_ERROR_FAIL;
}
}
static
CvResult CV_API_CALL cv_writer_open(const char* filename, int fourcc, double fps, int width, int height, int isColor,
CV_OUT CvPluginWriter* handle)
{
Size sz(width, height);
CvVideoWriter_FFMPEG_proxy* wrt = 0;
try
{
wrt = new CvVideoWriter_FFMPEG_proxy(filename, fourcc, fps, sz, isColor != 0);
if(wrt && wrt->isOpened())
{
*handle = (CvPluginWriter)wrt;
return CV_ERROR_OK;
}
}
catch(...)
{
}
if (wrt)
delete wrt;
return CV_ERROR_FAIL;
}
static
CvResult CV_API_CALL cv_writer_release(CvPluginWriter handle)
{
if (!handle)
return CV_ERROR_FAIL;
CvVideoWriter_FFMPEG_proxy* instance = (CvVideoWriter_FFMPEG_proxy*)handle;
delete instance;
return CV_ERROR_OK;
}
static
CvResult CV_API_CALL cv_writer_get_prop(CvPluginWriter /*handle*/, int /*prop*/, CV_OUT double* /*val*/)
{
return CV_ERROR_FAIL;
}
static
CvResult CV_API_CALL cv_writer_set_prop(CvPluginWriter /*handle*/, int /*prop*/, double /*val*/)
{
return CV_ERROR_FAIL;
}
static
CvResult CV_API_CALL cv_writer_write(CvPluginWriter handle, const unsigned char *data, int step, int width, int height, int cn)
{
if (!handle)
return CV_ERROR_FAIL;
try
{
CvVideoWriter_FFMPEG_proxy* instance = (CvVideoWriter_FFMPEG_proxy*)handle;
Mat img(Size(width, height), CV_MAKETYPE(CV_8U, cn), const_cast<uchar*>(data), step);
instance->write(img);
return CV_ERROR_OK;
}
catch(...)
{
return CV_ERROR_FAIL;
}
}
static const OpenCV_VideoIO_Plugin_API_preview plugin_api_v0 =
{
{
sizeof(OpenCV_VideoIO_Plugin_API_preview), ABI_VERSION, API_VERSION,
CV_VERSION_MAJOR, CV_VERSION_MINOR, CV_VERSION_REVISION, CV_VERSION_STATUS,
"FFmpeg OpenCV Video I/O plugin"
},
/* 1*/CAP_FFMPEG,
/* 2*/cv_capture_open,
/* 3*/cv_capture_release,
/* 4*/cv_capture_get_prop,
/* 5*/cv_capture_set_prop,
/* 6*/cv_capture_grab,
/* 7*/cv_capture_retrieve,
/* 8*/cv_writer_open,
/* 9*/cv_writer_release,
/* 10*/cv_writer_get_prop,
/* 11*/cv_writer_set_prop,
/* 12*/cv_writer_write
};
} // namespace
const OpenCV_VideoIO_Plugin_API_preview* opencv_videoio_plugin_init_v0(int requested_abi_version, int requested_api_version, void* /*reserved=NULL*/) CV_NOEXCEPT
{
if (requested_abi_version != 0)
return NULL;
if (requested_api_version != 0)
return NULL;
return &cv::plugin_api_v0;
}
#endif // BUILD_PLUGIN