782 lines
28 KiB
C++
782 lines
28 KiB
C++
// 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.
|
|
|
|
#include "precomp.hpp"
|
|
|
|
#include "backend.hpp"
|
|
#include "plugin_api.hpp"
|
|
#include "plugin_capture_api.hpp"
|
|
#include "plugin_writer_api.hpp"
|
|
|
|
#include "opencv2/core/utils/configuration.private.hpp"
|
|
#include "opencv2/core/utils/logger.hpp"
|
|
|
|
#include "opencv2/core/private.hpp"
|
|
#include "videoio_registry.hpp"
|
|
|
|
//==================================================================================================
|
|
// Dynamic backend implementation
|
|
|
|
#include "opencv2/core/utils/plugin_loader.private.hpp"
|
|
|
|
|
|
#include "backend_plugin_legacy.impl.hpp"
|
|
|
|
|
|
namespace cv { namespace impl {
|
|
|
|
#if OPENCV_HAVE_FILESYSTEM_SUPPORT && defined(ENABLE_PLUGINS)
|
|
|
|
using namespace cv::plugin::impl; // plugin_loader.hpp
|
|
|
|
static Mutex& getInitializationMutex()
|
|
{
|
|
static Mutex initializationMutex;
|
|
return initializationMutex;
|
|
}
|
|
|
|
|
|
class PluginBackend: public IBackend
|
|
{
|
|
protected:
|
|
|
|
void initCaptureAPI()
|
|
{
|
|
const char* init_name = "opencv_videoio_capture_plugin_init_v1";
|
|
FN_opencv_videoio_capture_plugin_init_t fn_init = reinterpret_cast<FN_opencv_videoio_capture_plugin_init_t>(lib_->getSymbol(init_name));
|
|
if (fn_init)
|
|
{
|
|
CV_LOG_INFO(NULL, "Found entry: '" << init_name << "'");
|
|
for (int supported_api_version = CAPTURE_API_VERSION; supported_api_version >= 0; supported_api_version--)
|
|
{
|
|
capture_api_ = fn_init(CAPTURE_ABI_VERSION, supported_api_version, NULL);
|
|
if (capture_api_)
|
|
break;
|
|
}
|
|
if (!capture_api_)
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: plugin is incompatible (can't be initialized): " << lib_->getName());
|
|
return;
|
|
}
|
|
if (!checkCompatibility(
|
|
capture_api_->api_header, CAPTURE_ABI_VERSION, CAPTURE_API_VERSION,
|
|
capture_api_->v0.id != CAP_FFMPEG))
|
|
{
|
|
capture_api_ = NULL;
|
|
return;
|
|
}
|
|
CV_LOG_INFO(NULL, "Video I/O: plugin is ready to use '" << capture_api_->api_header.api_description << "'");
|
|
}
|
|
else
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: missing plugin init function: '" << init_name << "', file: " << lib_->getName());
|
|
}
|
|
}
|
|
|
|
|
|
void initWriterAPI()
|
|
{
|
|
const char* init_name = "opencv_videoio_writer_plugin_init_v1";
|
|
FN_opencv_videoio_writer_plugin_init_t fn_init = reinterpret_cast<FN_opencv_videoio_writer_plugin_init_t>(lib_->getSymbol(init_name));
|
|
if (fn_init)
|
|
{
|
|
CV_LOG_INFO(NULL, "Found entry: '" << init_name << "'");
|
|
for (int supported_api_version = WRITER_API_VERSION; supported_api_version >= 0; supported_api_version--)
|
|
{
|
|
writer_api_ = fn_init(WRITER_ABI_VERSION, supported_api_version, NULL);
|
|
if (writer_api_)
|
|
break;
|
|
}
|
|
if (!writer_api_)
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: plugin is incompatible (can't be initialized): " << lib_->getName());
|
|
return;
|
|
}
|
|
if (!checkCompatibility(
|
|
writer_api_->api_header, WRITER_ABI_VERSION, WRITER_API_VERSION,
|
|
writer_api_->v0.id != CAP_FFMPEG))
|
|
{
|
|
writer_api_ = NULL;
|
|
return;
|
|
}
|
|
CV_LOG_INFO(NULL, "Video I/O: plugin is ready to use '" << writer_api_->api_header.api_description << "'");
|
|
}
|
|
else
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: missing plugin init function: '" << init_name << "', file: " << lib_->getName());
|
|
}
|
|
}
|
|
|
|
|
|
void initPluginLegacyAPI()
|
|
{
|
|
const char* init_name = "opencv_videoio_plugin_init_v0";
|
|
FN_opencv_videoio_plugin_init_t fn_init = reinterpret_cast<FN_opencv_videoio_plugin_init_t>(lib_->getSymbol(init_name));
|
|
if (fn_init)
|
|
{
|
|
CV_LOG_INFO(NULL, "Found entry: '" << init_name << "'");
|
|
for (int supported_api_version = API_VERSION; supported_api_version >= 0; supported_api_version--)
|
|
{
|
|
plugin_api_ = fn_init(ABI_VERSION, supported_api_version, NULL);
|
|
if (plugin_api_)
|
|
break;
|
|
}
|
|
if (!plugin_api_)
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: plugin is incompatible (can't be initialized): " << lib_->getName());
|
|
return;
|
|
}
|
|
if (!checkCompatibility(
|
|
plugin_api_->api_header, ABI_VERSION, API_VERSION,
|
|
plugin_api_->v0.captureAPI != CAP_FFMPEG))
|
|
{
|
|
plugin_api_ = NULL;
|
|
return;
|
|
}
|
|
CV_LOG_INFO(NULL, "Video I/O: plugin is ready to use '" << plugin_api_->api_header.api_description << "'");
|
|
}
|
|
else
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: plugin is incompatible, missing init function: '" << init_name << "', file: " << lib_->getName());
|
|
}
|
|
}
|
|
|
|
|
|
bool checkCompatibility(const OpenCV_API_Header& api_header, unsigned int abi_version, unsigned int api_version, bool checkMinorOpenCVVersion)
|
|
{
|
|
if (api_header.opencv_version_major != CV_VERSION_MAJOR)
|
|
{
|
|
CV_LOG_ERROR(NULL, "Video I/O: wrong OpenCV major version used by plugin '" << api_header.api_description << "': " <<
|
|
cv::format("%d.%d, OpenCV version is '" CV_VERSION "'", api_header.opencv_version_major, api_header.opencv_version_minor))
|
|
return false;
|
|
}
|
|
if (!checkMinorOpenCVVersion)
|
|
{
|
|
// no checks for OpenCV minor version
|
|
}
|
|
else if (api_header.opencv_version_minor != CV_VERSION_MINOR)
|
|
{
|
|
CV_LOG_ERROR(NULL, "Video I/O: wrong OpenCV minor version used by plugin '" << api_header.api_description << "': " <<
|
|
cv::format("%d.%d, OpenCV version is '" CV_VERSION "'", api_header.opencv_version_major, api_header.opencv_version_minor))
|
|
return false;
|
|
}
|
|
CV_LOG_INFO(NULL, "Video I/O: initialized '" << api_header.api_description << "': built with "
|
|
<< cv::format("OpenCV %d.%d (ABI/API = %d/%d)",
|
|
api_header.opencv_version_major, api_header.opencv_version_minor,
|
|
api_header.min_api_version, api_header.api_version)
|
|
<< ", current OpenCV version is '" CV_VERSION "' (ABI/API = " << abi_version << "/" << api_version << ")"
|
|
);
|
|
if (api_header.min_api_version != abi_version) // future: range can be here
|
|
{
|
|
// actually this should never happen due to checks in plugin's init() function
|
|
CV_LOG_ERROR(NULL, "Video I/O: plugin is not supported due to incompatible ABI = " << api_header.min_api_version);
|
|
return false;
|
|
}
|
|
if (api_header.api_version != api_version)
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: NOTE: plugin is supported, but there is API version mismath: "
|
|
<< cv::format("plugin API level (%d) != OpenCV API level (%d)", api_header.api_version, api_version));
|
|
if (api_header.api_version < api_version)
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: NOTE: some functionality may be unavailable due to lack of support by plugin implementation");
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public:
|
|
Ptr<cv::plugin::impl::DynamicLib> lib_;
|
|
const OpenCV_VideoIO_Capture_Plugin_API* capture_api_;
|
|
const OpenCV_VideoIO_Writer_Plugin_API* writer_api_;
|
|
const OpenCV_VideoIO_Plugin_API_preview* plugin_api_; //!< deprecated
|
|
|
|
PluginBackend(const Ptr<cv::plugin::impl::DynamicLib>& lib)
|
|
: lib_(lib)
|
|
, capture_api_(NULL), writer_api_(NULL)
|
|
, plugin_api_(NULL)
|
|
{
|
|
initCaptureAPI();
|
|
initWriterAPI();
|
|
if (capture_api_ == NULL && writer_api_ == NULL)
|
|
{
|
|
initPluginLegacyAPI();
|
|
}
|
|
}
|
|
|
|
Ptr<IVideoCapture> createCapture(int camera) const;
|
|
Ptr<IVideoCapture> createCapture(int camera, const VideoCaptureParameters& params) const CV_OVERRIDE;
|
|
Ptr<IVideoCapture> createCapture(const std::string &filename) const;
|
|
Ptr<IVideoCapture> createCapture(const std::string &filename, const VideoCaptureParameters& params) const CV_OVERRIDE;
|
|
Ptr<IVideoWriter> createWriter(const std::string& filename, int fourcc, double fps,
|
|
const cv::Size& sz, const VideoWriterParameters& params) const CV_OVERRIDE;
|
|
|
|
std::string getCapturePluginVersion(CV_OUT int& version_ABI, CV_OUT int& version_API)
|
|
{
|
|
CV_Assert(capture_api_ || plugin_api_);
|
|
const OpenCV_API_Header& api_header = capture_api_ ? capture_api_->api_header : plugin_api_->api_header;
|
|
version_ABI = api_header.min_api_version;
|
|
version_API = api_header.api_version;
|
|
return api_header.api_description;
|
|
}
|
|
|
|
std::string getWriterPluginVersion(CV_OUT int& version_ABI, CV_OUT int& version_API)
|
|
{
|
|
CV_Assert(writer_api_ || plugin_api_);
|
|
const OpenCV_API_Header& api_header = writer_api_ ? writer_api_->api_header : plugin_api_->api_header;
|
|
version_ABI = api_header.min_api_version;
|
|
version_API = api_header.api_version;
|
|
return api_header.api_description;
|
|
}
|
|
};
|
|
|
|
class PluginBackendFactory : public IBackendFactory
|
|
{
|
|
public:
|
|
VideoCaptureAPIs id_;
|
|
const char* baseName_;
|
|
Ptr<PluginBackend> backend;
|
|
bool initialized;
|
|
public:
|
|
PluginBackendFactory(VideoCaptureAPIs id, const char* baseName) :
|
|
id_(id), baseName_(baseName),
|
|
initialized(false)
|
|
{
|
|
// nothing, plugins are loaded on demand
|
|
}
|
|
|
|
Ptr<IBackend> getBackend() const CV_OVERRIDE
|
|
{
|
|
initBackend();
|
|
return backend.staticCast<IBackend>();
|
|
}
|
|
|
|
bool isBuiltIn() const CV_OVERRIDE { return false; }
|
|
|
|
std::string getCapturePluginVersion(
|
|
CV_OUT int& version_ABI,
|
|
CV_OUT int& version_API) const
|
|
{
|
|
initBackend();
|
|
if (!backend)
|
|
CV_Error_(Error::StsNotImplemented, ("Backend '%s' is not available", baseName_));
|
|
return backend->getCapturePluginVersion(version_ABI, version_API);
|
|
}
|
|
|
|
std::string getWriterPluginVersion(
|
|
CV_OUT int& version_ABI,
|
|
CV_OUT int& version_API) const
|
|
{
|
|
initBackend();
|
|
if (!backend)
|
|
CV_Error_(Error::StsNotImplemented, ("Backend '%s' is not available", baseName_));
|
|
return backend->getWriterPluginVersion(version_ABI, version_API);
|
|
}
|
|
|
|
protected:
|
|
inline void initBackend() const
|
|
{
|
|
if (!initialized)
|
|
{
|
|
const_cast<PluginBackendFactory*>(this)->initBackend_();
|
|
}
|
|
}
|
|
void initBackend_()
|
|
{
|
|
AutoLock lock(getInitializationMutex());
|
|
try {
|
|
if (!initialized)
|
|
loadPlugin();
|
|
}
|
|
catch (...)
|
|
{
|
|
CV_LOG_INFO(NULL, "Video I/O: exception during plugin loading: " << baseName_ << ". SKIP");
|
|
}
|
|
initialized = true;
|
|
}
|
|
void loadPlugin();
|
|
};
|
|
|
|
static
|
|
std::vector<FileSystemPath_t> getPluginCandidates(const std::string& baseName)
|
|
{
|
|
using namespace cv::utils;
|
|
using namespace cv::utils::fs;
|
|
const std::string baseName_l = toLowerCase(baseName);
|
|
const std::string baseName_u = toUpperCase(baseName);
|
|
const FileSystemPath_t baseName_l_fs = toFileSystemPath(baseName_l);
|
|
std::vector<FileSystemPath_t> paths;
|
|
const std::vector<std::string> paths_ = getConfigurationParameterPaths("OPENCV_VIDEOIO_PLUGIN_PATH", std::vector<std::string>());
|
|
if (paths_.size() != 0)
|
|
{
|
|
for (size_t i = 0; i < paths_.size(); i++)
|
|
{
|
|
paths.push_back(toFileSystemPath(paths_[i]));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
FileSystemPath_t binaryLocation;
|
|
if (getBinLocation(binaryLocation))
|
|
{
|
|
binaryLocation = getParent(binaryLocation);
|
|
#ifndef CV_VIDEOIO_PLUGIN_SUBDIRECTORY
|
|
paths.push_back(binaryLocation);
|
|
#else
|
|
paths.push_back(binaryLocation + toFileSystemPath("/") + toFileSystemPath(CV_VIDEOIO_PLUGIN_SUBDIRECTORY_STR));
|
|
#endif
|
|
}
|
|
}
|
|
const std::string default_expr = libraryPrefix() + "opencv_videoio_" + baseName_l + "*" + librarySuffix();
|
|
const std::string plugin_expr = getConfigurationParameterString((std::string("OPENCV_VIDEOIO_PLUGIN_") + baseName_u).c_str(), default_expr.c_str());
|
|
std::vector<FileSystemPath_t> results;
|
|
#ifdef _WIN32
|
|
FileSystemPath_t moduleName = toFileSystemPath(libraryPrefix() + "opencv_videoio_" + baseName_l + librarySuffix());
|
|
#ifndef WINRT
|
|
if (baseName_u == "FFMPEG") // backward compatibility
|
|
{
|
|
const wchar_t* ffmpeg_env_path = _wgetenv(L"OPENCV_FFMPEG_DLL_DIR");
|
|
if (ffmpeg_env_path)
|
|
{
|
|
results.push_back(FileSystemPath_t(ffmpeg_env_path) + L"\\" + moduleName);
|
|
}
|
|
}
|
|
#endif
|
|
if (plugin_expr != default_expr)
|
|
{
|
|
moduleName = toFileSystemPath(plugin_expr);
|
|
results.push_back(moduleName);
|
|
}
|
|
for (const FileSystemPath_t& path : paths)
|
|
{
|
|
results.push_back(path + L"\\" + moduleName);
|
|
}
|
|
results.push_back(moduleName);
|
|
#if defined(_DEBUG) && defined(DEBUG_POSTFIX)
|
|
if (baseName_u == "FFMPEG") // backward compatibility
|
|
{
|
|
const FileSystemPath_t templ = toFileSystemPath(CVAUX_STR(DEBUG_POSTFIX) ".dll");
|
|
FileSystemPath_t nonDebugName(moduleName);
|
|
size_t suf = nonDebugName.rfind(templ);
|
|
if (suf != FileSystemPath_t::npos)
|
|
{
|
|
nonDebugName.replace(suf, suf + templ.size(), L".dll");
|
|
results.push_back(nonDebugName);
|
|
}
|
|
}
|
|
#endif // _DEBUG && DEBUG_POSTFIX
|
|
#else
|
|
CV_LOG_INFO(NULL, "VideoIO plugin (" << baseName << "): glob is '" << plugin_expr << "', " << paths.size() << " location(s)");
|
|
for (const std::string& path : paths)
|
|
{
|
|
if (path.empty())
|
|
continue;
|
|
std::vector<std::string> candidates;
|
|
cv::glob(utils::fs::join(path, plugin_expr), candidates);
|
|
// Prefer candisates with higher versions
|
|
// TODO: implemented accurate versions-based comparator
|
|
std::sort(candidates.begin(), candidates.end(), std::greater<std::string>());
|
|
CV_LOG_INFO(NULL, " - " << path << ": " << candidates.size());
|
|
copy(candidates.begin(), candidates.end(), back_inserter(results));
|
|
}
|
|
#endif
|
|
CV_LOG_INFO(NULL, "Found " << results.size() << " plugin(s) for " << baseName);
|
|
return results;
|
|
}
|
|
|
|
void PluginBackendFactory::loadPlugin()
|
|
{
|
|
for (const FileSystemPath_t& plugin : getPluginCandidates(baseName_))
|
|
{
|
|
auto lib = makePtr<cv::plugin::impl::DynamicLib>(plugin);
|
|
if (!lib->isLoaded())
|
|
continue;
|
|
try
|
|
{
|
|
Ptr<PluginBackend> pluginBackend = makePtr<PluginBackend>(lib);
|
|
if (!pluginBackend)
|
|
return;
|
|
if (pluginBackend->capture_api_)
|
|
{
|
|
if (pluginBackend->capture_api_->v0.id != id_)
|
|
{
|
|
CV_LOG_ERROR(NULL, "Video I/O: plugin '" << pluginBackend->capture_api_->api_header.api_description <<
|
|
"': unexpected backend ID: " <<
|
|
pluginBackend->capture_api_->v0.id << " vs " << (int)id_ << " (expected)");
|
|
return;
|
|
}
|
|
}
|
|
if (pluginBackend->writer_api_)
|
|
{
|
|
if (pluginBackend->writer_api_->v0.id != id_)
|
|
{
|
|
CV_LOG_ERROR(NULL, "Video I/O: plugin '" << pluginBackend->writer_api_->api_header.api_description <<
|
|
"': unexpected backend ID: " <<
|
|
pluginBackend->writer_api_->v0.id << " vs " << (int)id_ << " (expected)");
|
|
return;
|
|
}
|
|
}
|
|
if (pluginBackend->plugin_api_)
|
|
{
|
|
if (pluginBackend->plugin_api_->v0.captureAPI != id_)
|
|
{
|
|
CV_LOG_ERROR(NULL, "Video I/O: plugin '" << pluginBackend->plugin_api_->api_header.api_description <<
|
|
"': unexpected backend ID: " <<
|
|
pluginBackend->plugin_api_->v0.captureAPI << " vs " << (int)id_ << " (expected)");
|
|
return;
|
|
}
|
|
}
|
|
if (pluginBackend->capture_api_ == NULL && pluginBackend->writer_api_ == NULL
|
|
&& pluginBackend->plugin_api_ == NULL)
|
|
{
|
|
CV_LOG_ERROR(NULL, "Video I/O: no compatible plugin API for backend ID: " << (int)id_);
|
|
return;
|
|
}
|
|
backend = pluginBackend;
|
|
return;
|
|
}
|
|
catch (...)
|
|
{
|
|
CV_LOG_WARNING(NULL, "Video I/O: exception during plugin initialization: " << toPrintablePath(plugin) << ". SKIP");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//==================================================================================================
|
|
|
|
class PluginCapture : public cv::IVideoCapture
|
|
{
|
|
const OpenCV_VideoIO_Capture_Plugin_API* plugin_api_;
|
|
CvPluginCapture capture_;
|
|
|
|
public:
|
|
static
|
|
Ptr<PluginCapture> create(const OpenCV_VideoIO_Capture_Plugin_API* plugin_api,
|
|
const std::string &filename, int camera, const VideoCaptureParameters& params)
|
|
{
|
|
CV_Assert(plugin_api);
|
|
CV_Assert(plugin_api->v0.Capture_release);
|
|
|
|
CvPluginCapture capture = NULL;
|
|
|
|
if (plugin_api->api_header.api_version >= 1 && plugin_api->v1.Capture_open_with_params)
|
|
{
|
|
std::vector<int> vint_params = params.getIntVector();
|
|
int* c_params = vint_params.data();
|
|
unsigned n_params = (unsigned)(vint_params.size() / 2);
|
|
|
|
if (CV_ERROR_OK == plugin_api->v1.Capture_open_with_params(
|
|
filename.empty() ? 0 : filename.c_str(), camera, c_params, n_params, &capture))
|
|
{
|
|
CV_Assert(capture);
|
|
return makePtr<PluginCapture>(plugin_api, capture);
|
|
}
|
|
}
|
|
else if (plugin_api->v0.Capture_open)
|
|
{
|
|
if (CV_ERROR_OK == plugin_api->v0.Capture_open(filename.empty() ? 0 : filename.c_str(), camera, &capture))
|
|
{
|
|
CV_Assert(capture);
|
|
Ptr<PluginCapture> cap = makePtr<PluginCapture>(plugin_api, capture);
|
|
if (cap && !params.empty())
|
|
{
|
|
applyParametersFallback(cap, params);
|
|
}
|
|
return cap;
|
|
}
|
|
}
|
|
|
|
return Ptr<PluginCapture>();
|
|
}
|
|
|
|
PluginCapture(const OpenCV_VideoIO_Capture_Plugin_API* plugin_api, CvPluginCapture capture)
|
|
: plugin_api_(plugin_api), capture_(capture)
|
|
{
|
|
CV_Assert(plugin_api_); CV_Assert(capture_);
|
|
}
|
|
|
|
~PluginCapture()
|
|
{
|
|
CV_DbgAssert(plugin_api_->v0.Capture_release);
|
|
if (CV_ERROR_OK != plugin_api_->v0.Capture_release(capture_))
|
|
CV_LOG_ERROR(NULL, "Video I/O: Can't release capture by plugin '" << plugin_api_->api_header.api_description << "'");
|
|
capture_ = NULL;
|
|
}
|
|
double getProperty(int prop) const CV_OVERRIDE
|
|
{
|
|
double val = -1;
|
|
if (plugin_api_->v0.Capture_getProperty)
|
|
if (CV_ERROR_OK != plugin_api_->v0.Capture_getProperty(capture_, prop, &val))
|
|
val = -1;
|
|
return val;
|
|
}
|
|
bool setProperty(int prop, double val) CV_OVERRIDE
|
|
{
|
|
if (plugin_api_->v0.Capture_setProperty)
|
|
if (CV_ERROR_OK == plugin_api_->v0.Capture_setProperty(capture_, prop, val))
|
|
return true;
|
|
return false;
|
|
}
|
|
bool grabFrame() CV_OVERRIDE
|
|
{
|
|
if (plugin_api_->v0.Capture_grab)
|
|
if (CV_ERROR_OK == plugin_api_->v0.Capture_grab(capture_))
|
|
return true;
|
|
return false;
|
|
}
|
|
static CvResult CV_API_CALL retrieve_callback(int stream_idx, const unsigned char* data, int step, int width, int height, int type, void* userdata)
|
|
{
|
|
CV_UNUSED(stream_idx);
|
|
cv::_OutputArray* dst = static_cast<cv::_OutputArray*>(userdata);
|
|
if (!dst)
|
|
return CV_ERROR_FAIL;
|
|
cv::Mat(cv::Size(width, height), type, (void*)data, step).copyTo(*dst);
|
|
return CV_ERROR_OK;
|
|
}
|
|
bool retrieveFrame(int idx, cv::OutputArray img) CV_OVERRIDE
|
|
{
|
|
bool res = false;
|
|
if (plugin_api_->v0.Capture_retreive)
|
|
if (CV_ERROR_OK == plugin_api_->v0.Capture_retreive(capture_, idx, retrieve_callback, (cv::_OutputArray*)&img))
|
|
res = true;
|
|
return res;
|
|
}
|
|
bool isOpened() const CV_OVERRIDE
|
|
{
|
|
return capture_ != NULL; // TODO always true
|
|
}
|
|
int getCaptureDomain() CV_OVERRIDE
|
|
{
|
|
return plugin_api_->v0.id;
|
|
}
|
|
};
|
|
|
|
|
|
//==================================================================================================
|
|
|
|
class PluginWriter : public cv::IVideoWriter
|
|
{
|
|
const OpenCV_VideoIO_Writer_Plugin_API* plugin_api_;
|
|
CvPluginWriter writer_;
|
|
|
|
public:
|
|
static
|
|
Ptr<PluginWriter> create(const OpenCV_VideoIO_Writer_Plugin_API* plugin_api,
|
|
const std::string& filename, int fourcc, double fps, const cv::Size& sz,
|
|
const VideoWriterParameters& params)
|
|
{
|
|
CV_Assert(plugin_api);
|
|
CV_Assert(plugin_api->v0.Writer_release);
|
|
CV_Assert(!filename.empty());
|
|
|
|
CvPluginWriter writer = NULL;
|
|
|
|
if (plugin_api->api_header.api_version >= 1 && plugin_api->v1.Writer_open_with_params)
|
|
{
|
|
std::vector<int> vint_params = params.getIntVector();
|
|
int* c_params = &vint_params[0];
|
|
unsigned n_params = (unsigned)(vint_params.size() / 2);
|
|
|
|
if (CV_ERROR_OK == plugin_api->v1.Writer_open_with_params(filename.c_str(), fourcc, fps, sz.width, sz.height, c_params, n_params, &writer))
|
|
{
|
|
CV_Assert(writer);
|
|
return makePtr<PluginWriter>(plugin_api, writer);
|
|
}
|
|
}
|
|
else if (plugin_api->v0.Writer_open)
|
|
{
|
|
const bool isColor = params.get(VIDEOWRITER_PROP_IS_COLOR, true);
|
|
const int depth = params.get(VIDEOWRITER_PROP_DEPTH, CV_8U);
|
|
if (depth != CV_8U)
|
|
{
|
|
CV_LOG_WARNING(NULL, "Video I/O plugin doesn't support (due to lower API level) creation of VideoWriter with depth != CV_8U");
|
|
return Ptr<PluginWriter>();
|
|
}
|
|
if (params.warnUnusedParameters())
|
|
{
|
|
CV_LOG_ERROR(NULL, "VIDEOIO: unsupported parameters in VideoWriter, see logger INFO channel for details");
|
|
return Ptr<PluginWriter>();
|
|
}
|
|
if (CV_ERROR_OK == plugin_api->v0.Writer_open(filename.c_str(), fourcc, fps, sz.width, sz.height, isColor, &writer))
|
|
{
|
|
CV_Assert(writer);
|
|
return makePtr<PluginWriter>(plugin_api, writer);
|
|
}
|
|
}
|
|
|
|
return Ptr<PluginWriter>();
|
|
}
|
|
|
|
PluginWriter(const OpenCV_VideoIO_Writer_Plugin_API* plugin_api, CvPluginWriter writer)
|
|
: plugin_api_(plugin_api), writer_(writer)
|
|
{
|
|
CV_Assert(plugin_api_); CV_Assert(writer_);
|
|
}
|
|
|
|
~PluginWriter()
|
|
{
|
|
CV_DbgAssert(plugin_api_->v0.Writer_release);
|
|
if (CV_ERROR_OK != plugin_api_->v0.Writer_release(writer_))
|
|
CV_LOG_ERROR(NULL, "Video I/O: Can't release writer by plugin '" << plugin_api_->api_header.api_description << "'");
|
|
writer_ = NULL;
|
|
}
|
|
double getProperty(int prop) const CV_OVERRIDE
|
|
{
|
|
double val = -1;
|
|
if (plugin_api_->v0.Writer_getProperty)
|
|
if (CV_ERROR_OK != plugin_api_->v0.Writer_getProperty(writer_, prop, &val))
|
|
val = -1;
|
|
return val;
|
|
}
|
|
bool setProperty(int prop, double val) CV_OVERRIDE
|
|
{
|
|
if (plugin_api_->v0.Writer_setProperty)
|
|
if (CV_ERROR_OK == plugin_api_->v0.Writer_setProperty(writer_, prop, val))
|
|
return true;
|
|
return false;
|
|
}
|
|
bool isOpened() const CV_OVERRIDE
|
|
{
|
|
return writer_ != NULL; // TODO always true
|
|
}
|
|
void write(cv::InputArray arr) CV_OVERRIDE
|
|
{
|
|
cv::Mat img = arr.getMat();
|
|
CV_DbgAssert(writer_);
|
|
CV_Assert(plugin_api_->v0.Writer_write);
|
|
if (CV_ERROR_OK != plugin_api_->v0.Writer_write(writer_, img.data, (int)img.step[0], img.cols, img.rows, img.channels()))
|
|
{
|
|
CV_LOG_DEBUG(NULL, "Video I/O: Can't write frame by plugin '" << plugin_api_->api_header.api_description << "'");
|
|
}
|
|
// TODO return bool result?
|
|
}
|
|
int getCaptureDomain() const CV_OVERRIDE
|
|
{
|
|
return plugin_api_->v0.id;
|
|
}
|
|
};
|
|
|
|
|
|
Ptr<IVideoCapture> PluginBackend::createCapture(int camera, const VideoCaptureParameters& params) const
|
|
{
|
|
try
|
|
{
|
|
if (capture_api_)
|
|
return PluginCapture::create(capture_api_, std::string(), camera, params); //.staticCast<IVideoCapture>();
|
|
if (plugin_api_)
|
|
{
|
|
Ptr<IVideoCapture> cap = legacy::PluginCapture::create(plugin_api_, std::string(), camera); //.staticCast<IVideoCapture>();
|
|
if (cap && !params.empty())
|
|
{
|
|
applyParametersFallback(cap, params);
|
|
}
|
|
return cap;
|
|
}
|
|
}
|
|
catch (...)
|
|
{
|
|
CV_LOG_DEBUG(NULL, "Video I/O: can't create camera capture: " << camera);
|
|
throw;
|
|
}
|
|
return Ptr<IVideoCapture>();
|
|
}
|
|
|
|
Ptr<IVideoCapture> PluginBackend::createCapture(const std::string &filename, const VideoCaptureParameters& params) const
|
|
{
|
|
try
|
|
{
|
|
if (capture_api_)
|
|
return PluginCapture::create(capture_api_, filename, 0, params); //.staticCast<IVideoCapture>();
|
|
if (plugin_api_)
|
|
{
|
|
Ptr<IVideoCapture> cap = legacy::PluginCapture::create(plugin_api_, filename, 0); //.staticCast<IVideoCapture>();
|
|
if (cap && !params.empty())
|
|
{
|
|
applyParametersFallback(cap, params);
|
|
}
|
|
return cap;
|
|
}
|
|
}
|
|
catch (...)
|
|
{
|
|
CV_LOG_DEBUG(NULL, "Video I/O: can't open file capture: " << filename);
|
|
throw;
|
|
}
|
|
return Ptr<IVideoCapture>();
|
|
}
|
|
|
|
Ptr<IVideoWriter> PluginBackend::createWriter(const std::string& filename, int fourcc, double fps,
|
|
const cv::Size& sz, const VideoWriterParameters& params) const
|
|
{
|
|
try
|
|
{
|
|
if (writer_api_)
|
|
return PluginWriter::create(writer_api_, filename, fourcc, fps, sz, params); //.staticCast<IVideoWriter>();
|
|
if (plugin_api_)
|
|
return legacy::PluginWriter::create(plugin_api_, filename, fourcc, fps, sz, params); //.staticCast<IVideoWriter>();
|
|
}
|
|
catch (...)
|
|
{
|
|
CV_LOG_DEBUG(NULL, "Video I/O: can't open writer: " << filename);
|
|
}
|
|
return Ptr<IVideoWriter>();
|
|
}
|
|
|
|
#endif // OPENCV_HAVE_FILESYSTEM_SUPPORT && defined(ENABLE_PLUGINS)
|
|
|
|
} // namespace
|
|
|
|
Ptr<IBackendFactory> createPluginBackendFactory(VideoCaptureAPIs id, const char* baseName)
|
|
{
|
|
#if OPENCV_HAVE_FILESYSTEM_SUPPORT && defined(ENABLE_PLUGINS)
|
|
return makePtr<impl::PluginBackendFactory>(id, baseName); //.staticCast<IBackendFactory>();
|
|
#else
|
|
CV_UNUSED(id);
|
|
CV_UNUSED(baseName);
|
|
return Ptr<IBackendFactory>();
|
|
#endif
|
|
}
|
|
|
|
|
|
std::string getCapturePluginVersion(
|
|
const Ptr<IBackendFactory>& backend_factory,
|
|
CV_OUT int& version_ABI,
|
|
CV_OUT int& version_API
|
|
)
|
|
{
|
|
#if OPENCV_HAVE_FILESYSTEM_SUPPORT && defined(ENABLE_PLUGINS)
|
|
using namespace impl;
|
|
CV_Assert(backend_factory);
|
|
PluginBackendFactory* plugin_backend_factory = dynamic_cast<PluginBackendFactory*>(backend_factory.get());
|
|
CV_Assert(plugin_backend_factory);
|
|
return plugin_backend_factory->getCapturePluginVersion(version_ABI, version_API);
|
|
#else
|
|
CV_UNUSED(backend_factory);
|
|
CV_UNUSED(version_ABI);
|
|
CV_UNUSED(version_API);
|
|
CV_Error(Error::StsBadFunc, "Plugins are not available in this build");
|
|
#endif
|
|
}
|
|
|
|
std::string getWriterPluginVersion(
|
|
const Ptr<IBackendFactory>& backend_factory,
|
|
CV_OUT int& version_ABI,
|
|
CV_OUT int& version_API
|
|
)
|
|
{
|
|
#if OPENCV_HAVE_FILESYSTEM_SUPPORT && defined(ENABLE_PLUGINS)
|
|
using namespace impl;
|
|
CV_Assert(backend_factory);
|
|
PluginBackendFactory* plugin_backend_factory = dynamic_cast<PluginBackendFactory*>(backend_factory.get());
|
|
CV_Assert(plugin_backend_factory);
|
|
return plugin_backend_factory->getWriterPluginVersion(version_ABI, version_API);
|
|
#else
|
|
CV_UNUSED(backend_factory);
|
|
CV_UNUSED(version_ABI);
|
|
CV_UNUSED(version_API);
|
|
CV_Error(Error::StsBadFunc, "Plugins are not available in this build");
|
|
#endif
|
|
}
|
|
|
|
} // namespace
|