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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
#include "opencv2/core.hpp"
#include "opencv2/imgproc.hpp"
#ifdef __ANDROID__
#include <android/bitmap.h>
#define LOG_TAG "org.opencv.android.Utils"
#include "common.h"
using namespace cv;
extern "C" {
/*
* Class: org_opencv_android_Utils
* Method: void nBitmapToMat2(Bitmap b, long m_addr, boolean unPremultiplyAlpha)
*/
JNIEXPORT void JNICALL Java_org_opencv_android_Utils_nBitmapToMat2
(JNIEnv * env, jclass, jobject bitmap, jlong m_addr, jboolean needUnPremultiplyAlpha);
JNIEXPORT void JNICALL Java_org_opencv_android_Utils_nBitmapToMat2
(JNIEnv * env, jclass, jobject bitmap, jlong m_addr, jboolean needUnPremultiplyAlpha)
{
AndroidBitmapInfo info;
void* pixels = 0;
Mat& dst = *((Mat*)m_addr);
try {
LOGD("nBitmapToMat");
CV_Assert( AndroidBitmap_getInfo(env, bitmap, &info) >= 0 );
CV_Assert( info.format == ANDROID_BITMAP_FORMAT_RGBA_8888 ||
info.format == ANDROID_BITMAP_FORMAT_RGB_565 );
CV_Assert( AndroidBitmap_lockPixels(env, bitmap, &pixels) >= 0 );
CV_Assert( pixels );
dst.create(info.height, info.width, CV_8UC4);
if( info.format == ANDROID_BITMAP_FORMAT_RGBA_8888 )
{
LOGD("nBitmapToMat: RGBA_8888 -> CV_8UC4");
Mat tmp(info.height, info.width, CV_8UC4, pixels);
if(needUnPremultiplyAlpha) cvtColor(tmp, dst, COLOR_mRGBA2RGBA);
else tmp.copyTo(dst);
} else {
// info.format == ANDROID_BITMAP_FORMAT_RGB_565
LOGD("nBitmapToMat: RGB_565 -> CV_8UC4");
Mat tmp(info.height, info.width, CV_8UC2, pixels);
cvtColor(tmp, dst, COLOR_BGR5652RGBA);
}
AndroidBitmap_unlockPixels(env, bitmap);
return;
} catch(const cv::Exception& e) {
AndroidBitmap_unlockPixels(env, bitmap);
LOGE("nBitmapToMat caught cv::Exception: %s", e.what());
jclass je = env->FindClass("org/opencv/core/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return;
} catch (...) {
AndroidBitmap_unlockPixels(env, bitmap);
LOGE("nBitmapToMat caught unknown exception (...)");
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {nBitmapToMat}");
return;
}
}
// old signature is left for binary compatibility with 2.4.0 & 2.4.1, to removed in 2.5
JNIEXPORT void JNICALL Java_org_opencv_android_Utils_nBitmapToMat
(JNIEnv * env, jclass, jobject bitmap, jlong m_addr);
JNIEXPORT void JNICALL Java_org_opencv_android_Utils_nBitmapToMat
(JNIEnv * env, jclass, jobject bitmap, jlong m_addr)
{
Java_org_opencv_android_Utils_nBitmapToMat2(env, 0, bitmap, m_addr, false);
}
/*
* Class: org_opencv_android_Utils
* Method: void nMatToBitmap2(long m_addr, Bitmap b, boolean premultiplyAlpha)
*/
JNIEXPORT void JNICALL Java_org_opencv_android_Utils_nMatToBitmap2
(JNIEnv * env, jclass, jlong m_addr, jobject bitmap, jboolean needPremultiplyAlpha);
JNIEXPORT void JNICALL Java_org_opencv_android_Utils_nMatToBitmap2
(JNIEnv * env, jclass, jlong m_addr, jobject bitmap, jboolean needPremultiplyAlpha)
{
AndroidBitmapInfo info;
void* pixels = 0;
Mat& src = *((Mat*)m_addr);
try {
LOGD("nMatToBitmap");
CV_Assert( AndroidBitmap_getInfo(env, bitmap, &info) >= 0 );
CV_Assert( info.format == ANDROID_BITMAP_FORMAT_RGBA_8888 ||
info.format == ANDROID_BITMAP_FORMAT_RGB_565 );
CV_Assert( src.dims == 2 && info.height == (uint32_t)src.rows && info.width == (uint32_t)src.cols );
CV_Assert( src.type() == CV_8UC1 || src.type() == CV_8UC3 || src.type() == CV_8UC4 );
CV_Assert( AndroidBitmap_lockPixels(env, bitmap, &pixels) >= 0 );
CV_Assert( pixels );
if( info.format == ANDROID_BITMAP_FORMAT_RGBA_8888 )
{
Mat tmp(info.height, info.width, CV_8UC4, pixels);
if(src.type() == CV_8UC1)
{
LOGD("nMatToBitmap: CV_8UC1 -> RGBA_8888");
cvtColor(src, tmp, COLOR_GRAY2RGBA);
} else if(src.type() == CV_8UC3){
LOGD("nMatToBitmap: CV_8UC3 -> RGBA_8888");
cvtColor(src, tmp, COLOR_RGB2RGBA);
} else if(src.type() == CV_8UC4){
LOGD("nMatToBitmap: CV_8UC4 -> RGBA_8888");
if(needPremultiplyAlpha) cvtColor(src, tmp, COLOR_RGBA2mRGBA);
else src.copyTo(tmp);
}
} else {
// info.format == ANDROID_BITMAP_FORMAT_RGB_565
Mat tmp(info.height, info.width, CV_8UC2, pixels);
if(src.type() == CV_8UC1)
{
LOGD("nMatToBitmap: CV_8UC1 -> RGB_565");
cvtColor(src, tmp, COLOR_GRAY2BGR565);
} else if(src.type() == CV_8UC3){
LOGD("nMatToBitmap: CV_8UC3 -> RGB_565");
cvtColor(src, tmp, COLOR_RGB2BGR565);
} else if(src.type() == CV_8UC4){
LOGD("nMatToBitmap: CV_8UC4 -> RGB_565");
cvtColor(src, tmp, COLOR_RGBA2BGR565);
}
}
AndroidBitmap_unlockPixels(env, bitmap);
return;
} catch(const cv::Exception& e) {
AndroidBitmap_unlockPixels(env, bitmap);
LOGE("nMatToBitmap caught cv::Exception: %s", e.what());
jclass je = env->FindClass("org/opencv/core/CvException");
if(!je) je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, e.what());
return;
} catch (...) {
AndroidBitmap_unlockPixels(env, bitmap);
LOGE("nMatToBitmap caught unknown exception (...)");
jclass je = env->FindClass("java/lang/Exception");
env->ThrowNew(je, "Unknown exception in JNI code {nMatToBitmap}");
return;
}
}
// old signature is left for binary compatibility with 2.4.0 & 2.4.1, to removed in 2.5
JNIEXPORT void JNICALL Java_org_opencv_android_Utils_nMatToBitmap
(JNIEnv * env, jclass, jlong m_addr, jobject bitmap);
JNIEXPORT void JNICALL Java_org_opencv_android_Utils_nMatToBitmap
(JNIEnv * env, jclass, jlong m_addr, jobject bitmap)
{
Java_org_opencv_android_Utils_nMatToBitmap2(env, 0, m_addr, bitmap, false);
}
} // extern "C"
#endif //__ANDROID__
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