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Added FPS measurement to some Android samples

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pull/13383/head
Andrey Kamaev 14 years ago
parent 9e00cc59af
commit d445903b31
4 changed files with 114 additions and 0 deletions
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  1. 50
      samples/android/face-detection/src/org/opencv/samples/fd/FpsMeter.java
  2. 7
      samples/android/face-detection/src/org/opencv/samples/fd/SampleCvViewBase.java
  3. 50
      samples/android/image-manipulations/src/org/opencv/samples/imagemanipulations/FpsMeter.java
  4. 7
      samples/android/image-manipulations/src/org/opencv/samples/imagemanipulations/SampleCvViewBase.java

50
samples/android/face-detection/src/org/opencv/samples/fd/FpsMeter.java
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@ -0,0 +1,50 @@
package org.opencv.samples.fd;
import java.text.DecimalFormat;
import org.opencv.core;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.Log;
public class FpsMeter {
private static final String TAG = "Sample::FpsMeter";
int step;
int framesCouner;
double freq;
long prevFrameTime;
String strfps;
DecimalFormat twoPlaces = new DecimalFormat("0.00");
Paint paint;
public void init() {
step = 20;
framesCouner = 0;
freq = core.getTickFrequency();
prevFrameTime = core.getTickCount();
strfps = "";
paint = new Paint();
paint.setColor(Color.BLUE);
paint.setTextSize(50);
}
public void measure() {
framesCouner++;
if (framesCouner % step == 0) {
long time = core.getTickCount();
double fps = step * freq / (time - prevFrameTime);
prevFrameTime = time;
DecimalFormat twoPlaces = new DecimalFormat("0.00");
strfps = twoPlaces.format(fps) + " FPS";
Log.i(TAG, strfps);
}
}
public void draw(Canvas canvas, float offsetx, float offsety) {
canvas.drawText(strfps, 20 + offsetx, 10 + 50 + offsety, paint);
}
}

7
samples/android/face-detection/src/org/opencv/samples/fd/SampleCvViewBase.java
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@ -16,11 +16,13 @@ public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHol
private SurfaceHolder mHolder;
private VideoCapture mCamera;
private FpsMeter mFps;
public SampleCvViewBase(Context context) {
super(context);
mHolder = getHolder();
mHolder.addCallback(this);
mFps = new FpsMeter();
Log.i(TAG, "Instantiated new " + this.getClass());
}
@ -78,6 +80,8 @@ public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHol
public void run() {
Log.i(TAG, "Starting processing thread");
mFps.init();
while (true) {
Bitmap bmp = null;
@ -91,12 +95,15 @@ public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHol
}
bmp = processFrame(mCamera);
mFps.measure();
}
if (bmp != null) {
Canvas canvas = mHolder.lockCanvas();
if (canvas != null) {
canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()) / 2, null);
mFps.draw(canvas, (canvas.getWidth() - bmp.getWidth()) / 2, 0);
mHolder.unlockCanvasAndPost(canvas);
}
bmp.recycle();

50
samples/android/image-manipulations/src/org/opencv/samples/imagemanipulations/FpsMeter.java
Unescape View File

@ -0,0 +1,50 @@
package org.opencv.samples.imagemanipulations;
import java.text.DecimalFormat;
import org.opencv.core;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.Log;
public class FpsMeter {
private static final String TAG = "Sample::FpsMeter";
int step;
int framesCouner;
double freq;
long prevFrameTime;
String strfps;
DecimalFormat twoPlaces = new DecimalFormat("0.00");
Paint paint;
public void init() {
step = 20;
framesCouner = 0;
freq = core.getTickFrequency();
prevFrameTime = core.getTickCount();
strfps = "";
paint = new Paint();
paint.setColor(Color.BLUE);
paint.setTextSize(50);
}
public void measure() {
framesCouner++;
if (framesCouner % step == 0) {
long time = core.getTickCount();
double fps = step * freq / (time - prevFrameTime);
prevFrameTime = time;
DecimalFormat twoPlaces = new DecimalFormat("0.00");
strfps = twoPlaces.format(fps) + " FPS";
Log.i(TAG, strfps);
}
}
public void draw(Canvas canvas, float offsetx, float offsety) {
canvas.drawText(strfps, 20 + offsetx, 10 + 50 + offsety, paint);
}
}

7
samples/android/image-manipulations/src/org/opencv/samples/imagemanipulations/SampleCvViewBase.java
Unescape View File

@ -16,11 +16,13 @@ public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHol
private SurfaceHolder mHolder;
private VideoCapture mCamera;
private FpsMeter mFps;
public SampleCvViewBase(Context context) {
super(context);
mHolder = getHolder();
mHolder.addCallback(this);
mFps = new FpsMeter();
Log.i(TAG, "Instantiated new " + this.getClass());
}
@ -78,6 +80,8 @@ public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHol
public void run() {
Log.i(TAG, "Starting processing thread");
mFps.init();
while (true) {
Bitmap bmp = null;
@ -91,12 +95,15 @@ public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHol
}
bmp = processFrame(mCamera);
mFps.measure();
}
if (bmp != null) {
Canvas canvas = mHolder.lockCanvas();
if (canvas != null) {
canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()) / 2, null);
mFps.draw(canvas, (canvas.getWidth() - bmp.getWidth()) / 2, 0);
mHolder.unlockCanvasAndPost(canvas);
}
bmp.recycle();

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