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Added native camera Android sample; Added manual port of VideoCapture class.

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This commit is contained in:
Andrey Kamaev
2011-07-15 14:03:53 +00:00
parent c3d40ca0dd
commit cc447448ff
18 changed files with 1043 additions and 5 deletions
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4
samples/android/0-base/AndroidManifest.xml
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@@ -12,7 +12,9 @@
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample0Base"
android:label="@string/app_name">
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />

4
samples/android/1-java/AndroidManifest.xml
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@@ -12,7 +12,9 @@
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample1Java"
android:label="@string/app_name">
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />

4
samples/android/2-native/AndroidManifest.xml
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@@ -12,7 +12,9 @@
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample2Native"
android:label="@string/app_name">
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />

8
samples/android/3-nativecamera/.classpath Normal file
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@@ -0,0 +1,8 @@
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="src" path="gen"/>
<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
<classpathentry kind="src" path="opencv2.3.1_src"/>
<classpathentry kind="output" path="bin"/>
</classpath>

40
samples/android/3-nativecamera/.project Normal file
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@@ -0,0 +1,40 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>Sample 3 Native Camera</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.android.ide.eclipse.adt.ApkBuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
<linkedResources>
<link>
<name>opencv2.3.1_src</name>
<type>2</type>
<locationURI>_android_opencv2_3_1_d2471b5d/src</locationURI>
</link>
</linkedResources>
</projectDescription>

5
samples/android/3-nativecamera/.settings/org.eclipse.jdt.core.prefs Normal file
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@@ -0,0 +1,5 @@
#Wed Jun 29 04:36:40 MSD 2011
eclipse.preferences.version=1
org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
org.eclipse.jdt.core.compiler.compliance=1.5
org.eclipse.jdt.core.compiler.source=1.5

31
samples/android/3-nativecamera/AndroidManifest.xml Normal file
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@@ -0,0 +1,31 @@
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.opencv.samples.s3"
android:versionCode="1"
android:versionName="1.0">
<supports-screens android:resizeable="true"
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:anyDensity="true" />
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample3NativeCamera"
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
</manifest>

3
samples/android/3-nativecamera/default.properties Normal file
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@@ -0,0 +1,3 @@
android.library.reference.1=../../../android/build
# Project target.
target=android-8

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samples/android/3-nativecamera/res/drawable/icon.png Normal file
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4
samples/android/3-nativecamera/res/values/strings.xml Normal file
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@@ -0,0 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Sample 3: Native Camera</string>
</resources>

66
samples/android/3-nativecamera/src/org/opencv/samples/s3/Sample3NativeCamera.java Normal file
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@@ -0,0 +1,66 @@
package org.opencv.samples.s3;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
public class Sample3NativeCamera extends Activity {
private static final String TAG = "Sample::Activity";
public static final int VIEW_MODE_RGBA = 0;
public static final int VIEW_MODE_GRAY = 1;
public static final int VIEW_MODE_CANNY = 2;
public static final int VIEW_MODE_SOBEL = 3;
public static final int VIEW_MODE_BLUR = 4;
private MenuItem mItemPreviewRGBA;
private MenuItem mItemPreviewGray;
private MenuItem mItemPreviewCanny;
private MenuItem mItemPreviewSobel;
private MenuItem mItemPreviewBlur;
public static int viewMode = VIEW_MODE_RGBA;
public Sample3NativeCamera() {
Log.i(TAG, "Instantiated new " + this.getClass());
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate");
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(new Sample3View(this));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
Log.i(TAG, "onCreateOptionsMenu");
mItemPreviewRGBA = menu.add("Preview RGBA");
mItemPreviewGray = menu.add("Preview GRAY");
mItemPreviewCanny = menu.add("Canny");
mItemPreviewSobel = menu.add("Sobel");
mItemPreviewBlur = menu.add("Blur");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Log.i(TAG, "Menu Item selected " + item);
if (item == mItemPreviewRGBA)
viewMode = VIEW_MODE_RGBA;
else if (item == mItemPreviewGray)
viewMode = VIEW_MODE_GRAY;
else if (item == mItemPreviewCanny)
viewMode = VIEW_MODE_CANNY;
else if (item == mItemPreviewSobel)
viewMode = VIEW_MODE_SOBEL;
else if (item == mItemPreviewBlur)
viewMode = VIEW_MODE_BLUR;
return true;
}
}

85
samples/android/3-nativecamera/src/org/opencv/samples/s3/Sample3View.java Normal file
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@@ -0,0 +1,85 @@
package org.opencv.samples.s3;
import org.opencv.*;
import android.content.Context;
import android.graphics.Bitmap;
import android.view.SurfaceHolder;
class Sample3View extends SampleViewBase {
private Mat mRgba;
private Mat mGray;
private Mat mIntermediateMat;
public Sample3View(Context context) {
super(context);
}
@Override
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
super.surfaceChanged(_holder, format, width, height);
synchronized (this) {
// initialize Mats before usage
mGray = new Mat();
mRgba = new Mat();
mIntermediateMat = new Mat();
}
}
@Override
protected Bitmap processFrame(VideoCapture capture) {
switch (Sample3NativeCamera.viewMode) {
case Sample3NativeCamera.VIEW_MODE_GRAY:
capture.retrieve(mGray, highgui.CV_CAP_ANDROID_GREY_FRAME);
imgproc.cvtColor(mGray, mRgba, imgproc.CV_GRAY2RGBA, 4);
break;
case Sample3NativeCamera.VIEW_MODE_RGBA:
capture.retrieve(mRgba, highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
core.putText(mRgba, "OpenCV + Android", new Point(10, 100), 3/* CV_FONT_HERSHEY_COMPLEX */, 2, new Scalar(255, 0, 0, 255), 3);
break;
case Sample3NativeCamera.VIEW_MODE_CANNY:
capture.retrieve(mGray, highgui.CV_CAP_ANDROID_GREY_FRAME);
imgproc.Canny(mGray, mIntermediateMat, 80, 100);
imgproc.cvtColor(mIntermediateMat, mRgba, imgproc.CV_GRAY2BGRA, 4);
break;
case Sample3NativeCamera.VIEW_MODE_SOBEL:
capture.retrieve(mGray, highgui.CV_CAP_ANDROID_GREY_FRAME);
imgproc.Sobel(mGray, mIntermediateMat, CvType.CV_8U, 1, 1);
core.convertScaleAbs(mIntermediateMat, mIntermediateMat, 8);
imgproc.cvtColor(mIntermediateMat, mRgba, imgproc.CV_GRAY2BGRA, 4);
break;
case Sample3NativeCamera.VIEW_MODE_BLUR:
capture.retrieve(mRgba, highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
imgproc.blur(mRgba, mRgba, new Size(15, 15));
break;
}
Bitmap bmp = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(), Bitmap.Config.ARGB_8888);
if (android.MatToBitmap(mRgba, bmp))
return bmp;
bmp.recycle();
return null;
}
@Override
public void run() {
super.run();
synchronized (this) {
// Explicitly deallocate Mats
if (mRgba != null)
mRgba.dispose();
if (mGray != null)
mGray.dispose();
if (mIntermediateMat != null)
mIntermediateMat.dispose();
mRgba = null;
mGray = null;
mIntermediateMat = null;
}
}
}

104
samples/android/3-nativecamera/src/org/opencv/samples/s3/SampleViewBase.java Normal file
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@@ -0,0 +1,104 @@
package org.opencv.samples.s3;
import java.util.List;
import org.opencv.*;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public abstract class SampleViewBase extends SurfaceView implements SurfaceHolder.Callback, Runnable {
private static final String TAG = "Sample::SurfaceView";
private SurfaceHolder mHolder;
private VideoCapture mCamera;
private boolean mThreadRun;
public SampleViewBase(Context context) {
super(context);
mHolder = getHolder();
mHolder.addCallback(this);
Log.i(TAG, "Instantiated new " + this.getClass());
}
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
Log.i(TAG, "surfaceCreated");
if (mCamera != null && mCamera.isOpened()) {
Log.i(TAG, "before mCamera.getSupportedPreviewSizes()");
List<Size> sizes = mCamera.getSupportedPreviewSizes();
Log.i(TAG, "after mCamera.getSupportedPreviewSizes()");
int mFrameWidth = width;
int mFrameHeight = height;
// selecting optimal camera preview size
{
double minDiff = Double.MAX_VALUE;
for (Size size : sizes) {
if (Math.abs(size.height - height) < minDiff) {
mFrameWidth = (int) size.width;
mFrameHeight = (int) size.height;
minDiff = Math.abs(size.height - height);
}
}
}
mCamera.set(highgui.CV_CAP_PROP_FRAME_WIDTH, mFrameWidth);
mCamera.set(highgui.CV_CAP_PROP_FRAME_HEIGHT, mFrameHeight);
}
}
public void surfaceCreated(SurfaceHolder holder) {
Log.i(TAG, "surfaceCreated");
mCamera = new VideoCapture(highgui.CV_CAP_ANDROID);
if (mCamera.isOpened()) {
(new Thread(this)).start();
} else {
mCamera.release();
mCamera = null;
Log.e(TAG, "Failed to open native camera");
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.i(TAG, "surfaceDestroyed");
mThreadRun = false;
if (mCamera != null) {
synchronized (this) {
mCamera.release();
mCamera = null;
}
}
}
protected abstract Bitmap processFrame(VideoCapture capture);
public void run() {
mThreadRun = true;
Log.i(TAG, "Starting processing thread");
while (mThreadRun) {
Bitmap bmp = null;
if (!mCamera.grab()) {
Log.e(TAG, "mCamera.grab() failed");
break;
}
synchronized (this) {
bmp = processFrame(mCamera);
}
if (bmp != null) {
Canvas canvas = mHolder.lockCanvas();
if (canvas != null) {
canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()) / 2, null);
mHolder.unlockCanvasAndPost(canvas);
}
bmp.recycle();
}
}
}
}

4
samples/android/4-mixed/AndroidManifest.xml
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@@ -12,7 +12,9 @@
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="Sample4Mixed"
android:label="@string/app_name">
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />