Examples with FrameBuffer2D androidx.media.filterfw.FrameBuffer2D used on opensource projects

Example 6 with FrameBuffer2D

use of androidx.media.filterfw.FrameBuffer2D in project platform_frameworks_base by android.

the class ColorfulnessFilter method onProcess.

@Override
protected void onProcess() {
    FrameBuffer2D histogramFrame = getConnectedInputPort("histogram").pullFrame().asFrameBuffer2D();
    ByteBuffer byteBuffer = histogramFrame.lockBytes(Frame.MODE_READ);
    byteBuffer.order(ByteOrder.nativeOrder());
    FloatBuffer histogramBuffer = byteBuffer.asFloatBuffer();
    histogramBuffer.rewind();
    // Create a hue histogram from hue-saturation histogram
    int hueBins = histogramFrame.getWidth();
    int saturationBins = histogramFrame.getHeight() - 1;
    float[] hueHistogram = new float[hueBins];
    float total = 0;
    for (int r = 0; r < saturationBins; ++r) {
        float weight = (float) Math.pow(2, r);
        for (int c = 0; c < hueBins; c++) {
            float value = histogramBuffer.get() * weight;
            hueHistogram[c] += value;
            total += value;
        }
    }
    float colorful = 0f;
    for (int c = 0; c < hueBins; ++c) {
        float value = hueHistogram[c] / total;
        if (value > 0f) {
            colorful -= value * ((float) Math.log(value));
        }
    }
    colorful /= Math.log(2);
    histogramFrame.unlock();
    OutputPort outPort = getConnectedOutputPort("score");
    FrameValue frameValue = outPort.fetchAvailableFrame(null).asFrameValue();
    frameValue.setValue(colorful);
    outPort.pushFrame(frameValue);
}

Example 7 with FrameBuffer2D

use of androidx.media.filterfw.FrameBuffer2D in project platform_frameworks_base by android.

the class StatsFilter method onProcess.

/**
     * @see androidx.media.filterfw.Filter#onProcess()
     */
@Override
protected void onProcess() {
    FrameBuffer2D inputFrame = getConnectedInputPort("buffer").pullFrame().asFrameImage2D();
    ByteBuffer pixelBuffer = inputFrame.lockBytes(Frame.MODE_READ);
    calcMeanAndStd(pixelBuffer, inputFrame.getWidth(), inputFrame.getHeight(), mCropRect);
    inputFrame.unlock();
    OutputPort outPort = getConnectedOutputPort("mean");
    FrameValue outFrame = outPort.fetchAvailableFrame(null).asFrameValue();
    outFrame.setValue(mStats[MEAN_INDEX]);
    outPort.pushFrame(outFrame);
    OutputPort outPortStdev = getConnectedOutputPort("stdev");
    FrameValue outFrameStdev = outPortStdev.fetchAvailableFrame(null).asFrameValue();
    outFrameStdev.setValue(mStats[STDEV_INDEX]);
    outPortStdev.pushFrame(outFrameStdev);
}

Example 8 with FrameBuffer2D

use of androidx.media.filterfw.FrameBuffer2D in project platform_frameworks_base by android.

the class NewChromaHistogramFilter method onProcess.

@Override
protected void onProcess() {
    FrameBuffer2D imageFrame = getConnectedInputPort("image").pullFrame().asFrameImage2D();
    OutputPort outPort = getConnectedOutputPort("histogram");
    mValueBins = mHueBins;
    int[] outDims = new int[] { mHueBins, mSaturationBins + 1 };
    FrameBuffer2D histogramFrame = outPort.fetchAvailableFrame(outDims).asFrameBuffer2D();
    ByteBuffer imageBuffer = imageFrame.lockBytes(Frame.MODE_READ);
    ByteBuffer histogramBuffer = histogramFrame.lockBytes(Frame.MODE_READ);
    histogramBuffer.order(ByteOrder.nativeOrder());
    FloatBuffer floatHistogram = histogramBuffer.asFloatBuffer();
    // Run native method
    extractChromaHistogram(imageBuffer, floatHistogram, mHueBins, mSaturationBins, mValueBins, mSaturationThreshold, mValueThreshold);
    imageFrame.unlock();
    histogramFrame.unlock();
    outPort.pushFrame(histogramFrame);
}

Example 9 with FrameBuffer2D

use of androidx.media.filterfw.FrameBuffer2D in project platform_frameworks_base by android.

the class IfElseFilter method onProcess.

@Override
protected void onProcess() {
    OutputPort outPort = getConnectedOutputPort("output");
    FrameImage2D trueFrame = getConnectedInputPort("trueResult").pullFrame().asFrameImage2D();
    FrameImage2D falseFrame = getConnectedInputPort("falseResult").pullFrame().asFrameImage2D();
    FrameValue boolFrameValue = getConnectedInputPort("condition").pullFrame().asFrameValue();
    boolean condition = (Boolean) boolFrameValue.getValue();
    FrameBuffer2D outputFrame;
    // If the condition is true, then we want to use the camera, else use the gallery
    if (condition) {
        outputFrame = trueFrame;
    } else {
        outputFrame = falseFrame;
    }
    outPort.pushFrame(outputFrame);
}

Example 10 with FrameBuffer2D

use of androidx.media.filterfw.FrameBuffer2D in project android_frameworks_base by DirtyUnicorns.

the class StatsFilter method onProcess.

/**
     * @see androidx.media.filterfw.Filter#onProcess()
     */
@Override
protected void onProcess() {
    FrameBuffer2D inputFrame = getConnectedInputPort("buffer").pullFrame().asFrameImage2D();
    ByteBuffer pixelBuffer = inputFrame.lockBytes(Frame.MODE_READ);
    calcMeanAndStd(pixelBuffer, inputFrame.getWidth(), inputFrame.getHeight(), mCropRect);
    inputFrame.unlock();
    OutputPort outPort = getConnectedOutputPort("mean");
    FrameValue outFrame = outPort.fetchAvailableFrame(null).asFrameValue();
    outFrame.setValue(mStats[MEAN_INDEX]);
    outPort.pushFrame(outFrame);
    OutputPort outPortStdev = getConnectedOutputPort("stdev");
    FrameValue outFrameStdev = outPortStdev.fetchAvailableFrame(null).asFrameValue();
    outFrameStdev.setValue(mStats[STDEV_INDEX]);
    outPortStdev.pushFrame(outFrameStdev);
}