cap_mfx_plugin.cpp
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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html
#if defined(BUILD_PLUGIN)
#include <string>
#include "cap_mfx_reader.hpp"
#include "cap_mfx_writer.hpp"
#define ABI_VERSION 0
#define API_VERSION 0
#include "plugin_api.hpp"
using namespace std;
namespace cv {
static
CvResult CV_API_CALL cv_capture_open(const char* filename, int, CV_OUT CvPluginCapture* handle)
{
if (!handle)
return CV_ERROR_FAIL;
*handle = NULL;
if (!filename)
return CV_ERROR_FAIL;
VideoCapture_IntelMFX *cap = 0;
try
{
if (filename)
{
cap = new VideoCapture_IntelMFX(string(filename));
if (cap->isOpened())
{
*handle = (CvPluginCapture)cap;
return CV_ERROR_OK;
}
}
}
catch (const std::exception& e)
{
CV_LOG_WARNING(NULL, "MFX: Exception is raised: " << e.what());
}
catch (...)
{
CV_LOG_WARNING(NULL, "MFX: Unknown C++ exception is raised");
}
if (cap)
delete cap;
return CV_ERROR_FAIL;
}
static
CvResult CV_API_CALL cv_capture_release(CvPluginCapture handle)
{
if (!handle)
return CV_ERROR_FAIL;
VideoCapture_IntelMFX* instance = (VideoCapture_IntelMFX*)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
{
VideoCapture_IntelMFX* instance = (VideoCapture_IntelMFX*)handle;
*val = instance->getProperty(prop);
return CV_ERROR_OK;
}
catch (const std::exception& e)
{
CV_LOG_WARNING(NULL, "MFX: Exception is raised: " << e.what());
return CV_ERROR_FAIL;
}
catch (...)
{
CV_LOG_WARNING(NULL, "MFX: Unknown C++ exception is raised");
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
{
VideoCapture_IntelMFX* instance = (VideoCapture_IntelMFX*)handle;
return instance->setProperty(prop, val) ? CV_ERROR_OK : CV_ERROR_FAIL;
}
catch (const std::exception& e)
{
CV_LOG_WARNING(NULL, "MFX: Exception is raised: " << e.what());
return CV_ERROR_FAIL;
}
catch (...)
{
CV_LOG_WARNING(NULL, "MFX: Unknown C++ exception is raised");
return CV_ERROR_FAIL;
}
}
static
CvResult CV_API_CALL cv_capture_grab(CvPluginCapture handle)
{
if (!handle)
return CV_ERROR_FAIL;
try
{
VideoCapture_IntelMFX* instance = (VideoCapture_IntelMFX*)handle;
return instance->grabFrame() ? CV_ERROR_OK : CV_ERROR_FAIL;
}
catch (const std::exception& e)
{
CV_LOG_WARNING(NULL, "MFX: Exception is raised: " << e.what());
return CV_ERROR_FAIL;
}
catch (...)
{
CV_LOG_WARNING(NULL, "MFX: Unknown C++ exception is raised");
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
{
VideoCapture_IntelMFX* instance = (VideoCapture_IntelMFX*)handle;
Mat img;
if (instance->retrieveFrame(stream_idx, img))
return callback(stream_idx, img.data, (int)img.step, img.cols, img.rows, img.channels(), userdata);
return CV_ERROR_FAIL;
}
catch (const std::exception& e)
{
CV_LOG_WARNING(NULL, "MFX: Exception is raised: " << e.what());
return CV_ERROR_FAIL;
}
catch (...)
{
CV_LOG_WARNING(NULL, "MFX: Unknown C++ exception is raised");
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)
{
VideoWriter_IntelMFX* wrt = 0;
try
{
wrt = new VideoWriter_IntelMFX(filename, fourcc, fps, Size(width, height), isColor);
if(wrt->isOpened())
{
*handle = (CvPluginWriter)wrt;
return CV_ERROR_OK;
}
}
catch (const std::exception& e)
{
CV_LOG_WARNING(NULL, "MFX: Exception is raised: " << e.what());
}
catch (...)
{
CV_LOG_WARNING(NULL, "MFX: Unknown C++ exception is raised");
}
if (wrt)
delete wrt;
return CV_ERROR_FAIL;
}
static
CvResult CV_API_CALL cv_writer_release(CvPluginWriter handle)
{
if (!handle)
return CV_ERROR_FAIL;
VideoWriter_IntelMFX* instance = (VideoWriter_IntelMFX*)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
{
VideoWriter_IntelMFX* instance = (VideoWriter_IntelMFX*)handle;
Mat img(Size(width, height), CV_MAKETYPE(CV_8U, cn), const_cast<uchar*>(data), step);
instance->write(img);
return CV_ERROR_OK;
}
catch (const std::exception& e)
{
CV_LOG_WARNING(NULL, "MFX: Exception is raised: " << e.what());
return CV_ERROR_FAIL;
}
catch (...)
{
CV_LOG_WARNING(NULL, "MFX: Unknown C++ exception is raised");
return CV_ERROR_FAIL;
}
}
static const OpenCV_VideoIO_Plugin_API_preview plugin_api =
{
{
sizeof(OpenCV_VideoIO_Plugin_API_preview), ABI_VERSION, API_VERSION,
CV_VERSION_MAJOR, CV_VERSION_MINOR, CV_VERSION_REVISION, CV_VERSION_STATUS,
"MediaSDK OpenCV Video I/O plugin"
},
{
/* 1*/CAP_INTEL_MFX,
/* 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 == ABI_VERSION && requested_api_version <= API_VERSION)
return &cv::plugin_api;
return NULL;
}
#endif // BUILD_PLUGIN