public class Sample0Base extends Activity {
private static final String TAG = "Sample0Base::Activity";
-
- public static final int view_mode_rgba = 0;
- public static final int view_mode_gray = 1;
-
- private MenuItem item_preview_rgba;
- private MenuItem item_preview_gray;
-
- public int view_mode;
-
+
+ public static final int VIEW_MODE_RGBA = 0;
+ public static final int VIEW_MODE_GRAY = 1;
+
+ private MenuItem mItemPreviewRGBA;
+ private MenuItem mItemPreviewGray;
+
+ public int viewMode;
+
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
- setContentView( new Sample0View(this) );
- view_mode = view_mode_rgba;
+ setContentView(new Sample0View(this));
+ viewMode = VIEW_MODE_RGBA;
}
-
+
public boolean onCreateOptionsMenu(Menu menu) {
- item_preview_rgba = menu.add("Preview RGBA");
- item_preview_gray = menu.add("Preview GRAY");
- return true;
+ mItemPreviewRGBA = menu.add("Preview RGBA");
+ mItemPreviewGray = menu.add("Preview GRAY");
+ return true;
}
-
- public boolean onOptionsItemSelected (MenuItem item) {
- Log.i(TAG, "Menu Item selected " + item);
- if (item == item_preview_rgba)
- view_mode = view_mode_rgba;
- else if (item == item_preview_gray)
- view_mode = view_mode_gray;
- return true;
+
+ 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;
+ return true;
}
}
package org.opencv.samples;
-import java.util.List;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
-class Sample0View extends SurfaceView implements SurfaceHolder.Callback, Runnable{
+import java.util.List;
+
+class Sample0View extends SurfaceView implements SurfaceHolder.Callback, Runnable {
private static final String TAG = "Sample0Base::View";
- private Camera camera;
- private SurfaceHolder holder;
- private int frame_width;
- private int frame_height;
- private byte[] frame;
-
+ private Camera mCamera;
+ private SurfaceHolder mHolder;
+ private int mFrameWidth;
+ private int mFrameHeight;
+ private byte[] mFrame;
private boolean mThreadRun;
-
- public Sample0View(Context context) {
- super(context);
- holder = getHolder();
- holder.addCallback(this);
- }
-
+ public Sample0View(Context context) {
+ super(context);
+ mHolder = getHolder();
+ mHolder.addCallback(this);
+ }
- public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
- if ( camera != null) {
- Camera.Parameters params = camera.getParameters();
+ public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
+ if ( mCamera != null) {
+ Camera.Parameters params = mCamera.getParameters();
List<Camera.Size> sizes = params.getSupportedPreviewSizes();
- frame_width = width;
- frame_height = height;
+ mFrameWidth = width;
+ mFrameHeight = height;
- //selecting optimal camera preview size
+ //selecting optimal camera preview size
{
double minDiff = Double.MAX_VALUE;
for (Camera.Size size : sizes) {
if (Math.abs(size.height - height) < minDiff) {
- frame_width = size.width;
- frame_height = size.height;
+ mFrameWidth = size.width;
+ mFrameHeight = size.height;
minDiff = Math.abs(size.height - height);
}
}
}
- params.setPreviewSize(frame_width, frame_height);
- camera.setParameters(params);
- camera.startPreview();
+ params.setPreviewSize(mFrameWidth, mFrameHeight);
+ mCamera.setParameters(params);
+ mCamera.startPreview();
}
}
- public void surfaceCreated(SurfaceHolder holder) {
- camera = Camera.open();
- camera.setPreviewCallback(
- new PreviewCallback() {
- public void onPreviewFrame(byte[] data, Camera camera) {
- synchronized(Sample0View.this)
- {
- frame = data;
- Sample0View.this.notify();
- }
- }
- }
- );
- (new Thread(this)).start();
- }
+ public void surfaceCreated(SurfaceHolder holder) {
+ mCamera = Camera.open();
+ mCamera.setPreviewCallback(
+ new PreviewCallback() {
+ public void onPreviewFrame(byte[] data, Camera camera) {
+ synchronized(Sample0View.this) {
+ mFrame = data;
+ Sample0View.this.notify();
+ }
+ }
+ }
+ );
+ (new Thread(this)).start();
+ }
- public void surfaceDestroyed(SurfaceHolder holder) {
- mThreadRun = false;
- if(camera != null) {
- camera.stopPreview();
- camera.setPreviewCallback(null);
- camera.release();
- camera = null;
- }
- }
+ public void surfaceDestroyed(SurfaceHolder holder) {
+ mThreadRun = false;
+ if(mCamera != null) {
+ mCamera.stopPreview();
+ mCamera.setPreviewCallback(null);
+ mCamera.release();
+ mCamera = null;
+ }
+ }
- public void run() {
- mThreadRun = true;
- Log.i(TAG, "Starting thread");
- while(mThreadRun) {
- byte[] data = null;
- synchronized(this)
- {
- try {
- this.wait();
- data = frame;
- } catch (InterruptedException e) {
- e.printStackTrace();
- }
- }
-
- Canvas canvas = holder.lockCanvas();
-
- int frameSize = frame_width*frame_height;
- int[] rgba = new int[frameSize];
-
- Sample0Base a = (Sample0Base)getContext();
- int view_mode = a.view_mode;
- if(view_mode == Sample0Base.view_mode_gray) {
- for(int i = 0; i < frameSize; i++) {
- int y = (0xff & ((int)data[i]));
- rgba[i] = 0xff000000 + (y << 16) + (y << 8) + y;
- }
- }
- else if (view_mode == Sample0Base.view_mode_rgba) {
- for(int i = 0; i < frame_height; i++)
- for(int j = 0; j < frame_width; j++) {
- int y = (0xff & ((int)data[i*frame_width+j]));
- int u = (0xff & ((int)data[frameSize + (i >> 1) * frame_width + (j & ~1) + 0]));
- int v = (0xff & ((int)data[frameSize + (i >> 1) * frame_width + (j & ~1) + 1]));
- if (y < 16) y = 16;
-
- int r = Math.round(1.164f * (y - 16) + 1.596f * (v - 128) );
- int g = Math.round(1.164f * (y - 16) - 0.813f * (v - 128) - 0.391f * (u - 128));
- int b = Math.round(1.164f * (y - 16) + 2.018f * (u - 128));
-
- if (r < 0) r = 0; if (r > 255) r = 255;
- if (g < 0) g = 0; if (g > 255) g = 255;
- if (b < 0) b = 0; if (b > 255) b = 255;
-
- rgba[i*frame_width+j] = 0xff000000 + (b << 16) + (g << 8) + r;
- }
- }
-
- Bitmap bmp = Bitmap.createBitmap(frame_width, frame_height, Bitmap.Config.ARGB_8888);
- bmp.setPixels(rgba, 0/*offset*/, frame_width /*stride*/, 0, 0, frame_width, frame_height);
-
- canvas.drawBitmap(bmp, (canvas.getWidth()-frame_width)/2, (canvas.getHeight()-frame_height)/2, null);
- holder.unlockCanvasAndPost(canvas);
- }
- }
+ public void run() {
+ mThreadRun = true;
+ Log.i(TAG, "Starting thread");
+ while(mThreadRun) {
+ byte[] data = null;
+ synchronized(this) {
+ try {
+ this.wait();
+ data = mFrame;
+ } catch (InterruptedException e) {
+ e.printStackTrace();
+ }
+ }
+
+ int frameSize = mFrameWidth*mFrameHeight;
+ int[] rgba = new int[frameSize];
+
+ Sample0Base a = (Sample0Base)getContext();
+ int view_mode = a.viewMode;
+ if(view_mode == Sample0Base.VIEW_MODE_GRAY) {
+ for(int i = 0; i < frameSize; i++) {
+ int y = (0xff & ((int)data[i]));
+ rgba[i] = 0xff000000 + (y << 16) + (y << 8) + y;
+ }
+ } else if (view_mode == Sample0Base.VIEW_MODE_RGBA) {
+ for(int i = 0; i < mFrameHeight; i++)
+ for(int j = 0; j < mFrameWidth; j++) {
+ int y = (0xff & ((int)data[i*mFrameWidth+j]));
+ int u = (0xff & ((int)data[frameSize + (i >> 1) * mFrameWidth + (j & ~1) + 0]));
+ int v = (0xff & ((int)data[frameSize + (i >> 1) * mFrameWidth + (j & ~1) + 1]));
+ if (y < 16) y = 16;
+
+ int r = Math.round(1.164f * (y - 16) + 1.596f * (v - 128) );
+ int g = Math.round(1.164f * (y - 16) - 0.813f * (v - 128) - 0.391f * (u - 128));
+ int b = Math.round(1.164f * (y - 16) + 2.018f * (u - 128));
+
+ if (r < 0) r = 0; if (r > 255) r = 255;
+ if (g < 0) g = 0; if (g > 255) g = 255;
+ if (b < 0) b = 0; if (b > 255) b = 255;
+
+ rgba[i*mFrameWidth+j] = 0xff000000 + (b << 16) + (g << 8) + r;
+ }
+ }
+
+ Bitmap bmp = Bitmap.createBitmap(mFrameWidth, mFrameHeight, Bitmap.Config.ARGB_8888);
+ bmp.setPixels(rgba, 0/*offset*/, mFrameWidth /*stride*/, 0, 0, mFrameWidth, mFrameHeight);
+
+ Canvas canvas = mHolder.lockCanvas();
+ canvas.drawBitmap(bmp, (canvas.getWidth()-mFrameWidth)/2, (canvas.getHeight()-mFrameHeight)/2, null);
+ mHolder.unlockCanvasAndPost(canvas);
+ }
+ }
}
\ No newline at end of file
projects / profile / ivi / opencv.git / commitdiff