adding OpenCV Manager

android/service/engine/jni/BinderComponent/OpenCVEngine.cpp

@@ -0,0 +1,225 @@
+#include "EngineCommon.h"
+#include "OpenCVEngine.h"
+#include "HardwareDetector.h"
+#include "StringUtils.h"
+#include <utils/Log.h>
+#include <assert.h>
+#include <string>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <dlfcn.h>
+
+using namespace android;
+
+const int OpenCVEngine::Platform = DetectKnownPlatforms();
+const int OpenCVEngine::CpuID = GetCpuID();
+
+std::set<std::string> OpenCVEngine::InitKnownOpenCVersions()
+{
+    std::set<std::string> result;
+
+    result.insert("240");
+    result.insert("241");
+    result.insert("242");
+
+    return result;
+}
+
+const std::set<std::string> OpenCVEngine::KnownVersions = InitKnownOpenCVersions();
+
+bool OpenCVEngine::ValidateVersionString(const std::string& version)
+{
+    return (KnownVersions.find(version) != KnownVersions.end());
+}
+
+std::string OpenCVEngine::NormalizeVersionString(std::string version)
+{
+    std::string result = "";
+    std::string suffix = "";
+
+    if (version.empty())
+    {
+	return result;
+    }
+
+    if (('a' == version[version.size()-1]) || ('b' == version[version.size()-1]))
+    {
+	suffix = version[version.size()-1];
+	version.erase(version.size()-1);
+    }
+
+    std::vector<std::string> parts = SplitStringVector(version, '.');
+
+    if (parts.size() >= 2)
+    {
+	if (parts.size() >= 3)
+	{
+	    result = parts[0] + parts[1] + parts[2] + suffix;
+	    if (!ValidateVersionString(result))
+		result = "";
+	}
+	else
+	{
+	    result = parts[0] + parts[1] + "0" + suffix;
+	    if (!ValidateVersionString(result))
+		result = "";
+	}
+    }
+
+    return result;
+}
+
+OpenCVEngine::OpenCVEngine(IPackageManager* PkgManager):
+    PackageManager(PkgManager)
+{
+    assert(PkgManager);
+}
+
+int32_t OpenCVEngine::GetVersion()
+{
+    return OPEN_CV_ENGINE_VERSION; 
+}
+
+String16 OpenCVEngine::GetLibPathByVersion(android::String16 version)
+{
+    std::string std_version(String8(version).string());
+    std::string norm_version;
+    std::string path;
+
+    LOGD("OpenCVEngine::GetLibPathByVersion(%s) impl", String8(version).string());
+
+    norm_version = NormalizeVersionString(std_version);
+
+    if (!norm_version.empty())
+    {
+	path = PackageManager->GetPackagePathByVersion(norm_version, Platform, CpuID);
+	if (path.empty())
+	{
+	    LOGI("Package OpenCV of version %s is not installed. Try to install it :)", norm_version.c_str());
+	}
+	else
+	{
+	    FixPermissions(path);
+	}
+    }
+    else
+    {
+	LOGE("OpenCV version \"%s\" is not supported", norm_version.c_str());
+    }
+
+    return String16(path.c_str());
+}
+
+android::String16 OpenCVEngine::GetLibraryList(android::String16 version)
+{
+    std::string std_version = String8(version).string();
+    std::string norm_version;
+    String16 result;
+    norm_version = NormalizeVersionString(std_version);
+
+    if (!norm_version.empty())
+    {
+	std::string tmp = PackageManager->GetPackagePathByVersion(norm_version, Platform, CpuID);
+	if (!tmp.empty())
+	{
+	    tmp += "/libopencvinfo.so";
+	    
+	    LOGD("Trying to load info library \"%s\"", tmp.c_str());
+	    
+	    void *handle;
+	    char* (*info_func)();
+	    
+	    handle = dlopen(tmp.c_str(), RTLD_LAZY);
+	    if (handle)
+	    {
+		const char *error;
+		
+		dlerror(); 
+		*(void **) (&info_func) = dlsym(handle, "GetLibraryList");
+		if ((error = dlerror()) == NULL)
+		{
+		    result = String16((*info_func)());
+		    dlclose(handle);   
+		}
+		else
+		{
+		    LOGE("Library loading error: \"%s\"", error);
+		}
+	    }
+	    else
+	    {
+		LOGI("Info library not found in package");
+	    }
+	}
+	else
+	{
+	    LOGI("Package OpenCV of version %s is not installed. Try to install it :)", norm_version.c_str());
+	}
+    }
+    else
+    {
+	LOGE("OpenCV version \"%s\" is not supported", norm_version.c_str());
+    }
+
+    return result;
+}
+
+bool OpenCVEngine::InstallVersion(android::String16 version)
+{
+    std::string std_version = String8(version).string();
+    std::string norm_version;
+    bool result = false;
+
+    norm_version = NormalizeVersionString(std_version);
+
+    if (!norm_version.empty())
+    {
+	LOGD("OpenCVEngine::InstallVersion() begin");
+	
+	if (!PackageManager->CheckVersionInstalled(norm_version, Platform, CpuID))
+	{
+	    LOGD("PackageManager->InstallVersion call");
+	    result = PackageManager->InstallVersion(norm_version, Platform, CpuID);
+	}
+	else
+	{
+	    LOGI("Package OpenCV of version %s is already installed. Skiped.", norm_version.c_str());
+	    result = true;
+	}
+    }
+    else
+    {
+	LOGE("OpenCV version \"%s\" is not supported", norm_version.c_str());
+    }
+
+    LOGD("OpenCVEngine::InstallVersion() end");
+
+    return result;
+}
+
+bool OpenCVEngine::FixPermissions(const std::string& path)
+{
+    LOGD("Fixing permissions for folder: \"%s\"", path.c_str());
+    chmod(path.c_str(), S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
+
+    DIR* dir = opendir(path.c_str());
+    if (!dir)
+    {
+	LOGD("Fixing permissions error");
+	return false;
+    }
+
+    dirent* files = readdir(dir);
+    while (files)
+    {
+	LOGD("Fix permissions for \"%s\"", files->d_name);
+	chmod((path + std::string("/") + std::string(files->d_name)).c_str(), S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
+	files = readdir(dir);
+    }
+
+    closedir(dir);
+
+    return true;
+}