Andrey Kamaev
14 years ago
parent
724a3c1473
commit
4b61683071
13 changed files with 271 additions and 1 deletions
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<?xml version="1.0" encoding="UTF-8"?> |
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<classpath> |
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<classpathentry kind="src" path="src"/> |
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<classpathentry kind="src" path="gen"/> |
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<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/> |
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<classpathentry kind="output" path="bin"/> |
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</classpath> |
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<?xml version="1.0" encoding="UTF-8"?> |
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<projectDescription> |
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<name>Sample 2 Native API</name> |
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<comment></comment> |
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<projects> |
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</projects> |
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<buildSpec> |
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<buildCommand> |
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<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name> |
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<arguments> |
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</arguments> |
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</buildCommand> |
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<buildCommand> |
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<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name> |
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<arguments> |
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</arguments> |
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</buildCommand> |
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<buildCommand> |
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<name>org.eclipse.jdt.core.javabuilder</name> |
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<arguments> |
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</arguments> |
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</buildCommand> |
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<buildCommand> |
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<name>com.android.ide.eclipse.adt.ApkBuilder</name> |
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<arguments> |
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</arguments> |
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</buildCommand> |
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</buildSpec> |
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<natures> |
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<nature>com.android.ide.eclipse.adt.AndroidNature</nature> |
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<nature>org.eclipse.jdt.core.javanature</nature> |
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</natures> |
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</projectDescription> |
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#Wed Jun 29 04:36:40 MSD 2011 |
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eclipse.preferences.version=1 |
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5 |
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org.eclipse.jdt.core.compiler.compliance=1.5 |
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org.eclipse.jdt.core.compiler.source=1.5 |
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<?xml version="1.0" encoding="utf-8"?> |
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<manifest xmlns:android="http://schemas.android.com/apk/res/android" |
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package="org.opencv.samples.s2" |
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android:versionCode="1" |
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android:versionName="1.0"> |
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|
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<supports-screens android:resizeable="true" |
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android:smallScreens="true" |
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android:normalScreens="true" |
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android:largeScreens="true" |
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android:anyDensity="true" /> |
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|
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<application android:label="@string/app_name" android:icon="@drawable/icon"> |
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<activity android:name="Sample2Native" |
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android:label="@string/app_name"> |
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<intent-filter> |
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<action android:name="android.intent.action.MAIN" /> |
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<category android:name="android.intent.category.LAUNCHER" /> |
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</intent-filter> |
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</activity> |
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</application> |
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|
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<uses-sdk android:minSdkVersion="8" /> |
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<uses-permission android:name="android.permission.CAMERA"/> |
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<uses-feature android:name="android.hardware.camera" /> |
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<uses-feature android:name="android.hardware.camera.autofocus" /> |
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|
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</manifest> |
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# This file is automatically generated by Android Tools. |
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# Do not modify this file -- YOUR CHANGES WILL BE ERASED! |
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# |
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# This file must be checked in Version Control Systems. |
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# |
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# To customize properties used by the Ant build system use, |
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# "build.properties", and override values to adapt the script to your |
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# project structure. |
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|
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# Project target. |
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target=android-8 |
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LOCAL_PATH := $(call my-dir)
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include $(CLEAR_VARS) |
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OPENCV_MK_BUILD_PATH:=../../../../android/build/OpenCV.mk
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ifeq ("$(wildcard $(OPENCV_MK_BUILD_PATH))","") |
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include $(TOOLCHAIN_PREBUILT_ROOT)/user/share/OpenCV/OpenCV.mk
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else |
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include $(OPENCV_MK_BUILD_PATH)
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endif |
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LOCAL_MODULE := native_sample
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LOCAL_SRC_FILES := jni_part.cpp
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LOCAL_LDLIBS += -llog -ldl
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include $(BUILD_SHARED_LIBRARY) |
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APP_STL := gnustl_static
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APP_CPPFLAGS := -frtti -fexceptions
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APP_ABI := armeabi-v7a
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#include <jni.h> |
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#include <opencv2/core/core.hpp> |
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#include <opencv2/imgproc/imgproc.hpp> |
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#include <opencv2/features2d/features2d.hpp> |
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#include <vector> |
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using namespace std; |
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using namespace cv; |
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extern "C" { |
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JNIEXPORT void JNICALL Java_org_opencv_samples_s2_Sample2View_FindFeatures(JNIEnv* env, jobject thiz, jint width, jint height, jbyteArray yuv, jintArray rgba) |
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{ |
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jbyte* _yuv = env->GetByteArrayElements(yuv, 0); |
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jint* _rgba = env->GetIntArrayElements(rgba, 0); |
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Mat myuv(height + height/2, width, CV_8UC1, (unsigned char *)_yuv); |
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Mat mrgba(height, width, CV_8UC4, (unsigned char *)_rgba); |
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Mat mgray(height, width, CV_8UC1, (unsigned char *)_yuv); |
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cvtColor(myuv, mrgba, CV_YUV420i2BGR, 4); |
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vector<KeyPoint> v; |
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FastFeatureDetector detector(50); |
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detector.detect(mgray, v); |
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for( size_t i = 0; i < v.size(); i++ ) |
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circle(mrgba, Point(v[i].pt.x, v[i].pt.y), 10, Scalar(0,0,255,255)); |
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env->ReleaseIntArrayElements(rgba, _rgba, 0); |
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env->ReleaseByteArrayElements(yuv, _yuv, 0); |
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} |
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} |
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After Width: | Height: | Size: 5.6 KiB |
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<?xml version="1.0" encoding="utf-8"?> |
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<resources> |
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<string name="app_name">Sample 2: Native API</string> |
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</resources> |
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package org.opencv.samples.s2; |
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import android.app.Activity; |
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import android.os.Bundle; |
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import android.view.Window; |
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public class Sample2Native extends Activity { |
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/** Called when the activity is first created. */ |
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@Override |
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public void onCreate(Bundle savedInstanceState) { |
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super.onCreate(savedInstanceState); |
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requestWindowFeature(Window.FEATURE_NO_TITLE); |
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setContentView(new Sample2View(this)); |
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} |
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} |
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package org.opencv.samples.s2; |
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import android.content.Context; |
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import android.graphics.Bitmap; |
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import android.graphics.Canvas; |
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import android.hardware.Camera; |
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import android.hardware.Camera.PreviewCallback; |
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import android.util.Log; |
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import android.view.SurfaceHolder; |
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import android.view.SurfaceView; |
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import java.util.List; |
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class Sample2View extends SurfaceView implements SurfaceHolder.Callback, Runnable { |
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private static final String TAG = "Sample2Native::View"; |
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private Camera mCamera; |
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private SurfaceHolder mHolder; |
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private int mFrameWidth; |
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private int mFrameHeight; |
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private byte[] mFrame; |
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private boolean mThreadRun; |
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public Sample2View(Context context) { |
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super(context); |
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mHolder = getHolder(); |
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mHolder.addCallback(this); |
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} |
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public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) { |
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if ( mCamera != null) { |
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Camera.Parameters params = mCamera.getParameters(); |
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List<Camera.Size> sizes = params.getSupportedPreviewSizes(); |
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mFrameWidth = width; |
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mFrameHeight = height; |
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//selecting optimal camera preview size
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{ |
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double minDiff = Double.MAX_VALUE; |
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for (Camera.Size size : sizes) { |
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if (Math.abs(size.height - height) < minDiff) { |
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mFrameWidth = size.width; |
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mFrameHeight = size.height; |
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minDiff = Math.abs(size.height - height); |
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} |
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} |
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} |
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params.setPreviewSize(mFrameWidth, mFrameHeight); |
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mCamera.setParameters(params); |
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mCamera.startPreview(); |
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} |
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} |
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public void surfaceCreated(SurfaceHolder holder) { |
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mCamera = Camera.open(); |
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mCamera.setPreviewCallback( |
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new PreviewCallback() { |
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public void onPreviewFrame(byte[] data, Camera camera) { |
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synchronized(Sample2View.this) { |
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mFrame = data; |
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Sample2View.this.notify(); |
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} |
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} |
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} |
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); |
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(new Thread(this)).start(); |
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} |
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public void surfaceDestroyed(SurfaceHolder holder) { |
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mThreadRun = false; |
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if(mCamera != null) { |
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synchronized(Sample2View.this) { |
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mCamera.stopPreview(); |
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mCamera.setPreviewCallback(null); |
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mCamera.release(); |
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mCamera = null; |
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} |
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} |
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} |
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public void run() { |
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mThreadRun = true; |
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Log.i(TAG, "Starting thread"); |
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while(mThreadRun) { |
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byte[] data = null; |
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synchronized(this) { |
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try { |
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this.wait(); |
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data = mFrame; |
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} catch (InterruptedException e) { |
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e.printStackTrace(); |
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} |
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} |
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int frameSize = mFrameWidth*mFrameHeight; |
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int[] rgba = new int[frameSize]; |
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FindFeatures(mFrameWidth, mFrameHeight, data, rgba); |
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Bitmap bmp = Bitmap.createBitmap(mFrameWidth, mFrameHeight, Bitmap.Config.ARGB_8888); |
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bmp.setPixels(rgba, 0/*offset*/, mFrameWidth /*stride*/, 0, 0, mFrameWidth, mFrameHeight); |
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Canvas canvas = mHolder.lockCanvas(); |
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canvas.drawBitmap(bmp, (canvas.getWidth()-mFrameWidth)/2, (canvas.getHeight()-mFrameHeight)/2, null); |
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mHolder.unlockCanvasAndPost(canvas); |
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} |
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} |
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public native void FindFeatures(int width, int height, byte yuv[], int[] rgba); |
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static { |
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System.loadLibrary("native_sample"); |
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} |
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} |
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