private void configureSurfaces()

in HdrViewfinder/Application/src/main/java/com/example/android/hdrviewfinder/HdrViewfinderActivity.java [460:497]
31 lines of code
7 McCabe index (conditional complexity)

    private void configureSurfaces() {
        // Find a good size for output - largest 16:9 aspect ratio that's less than 720p
        final int MAX_WIDTH = 1280;
        final float TARGET_ASPECT = 16.f / 9.f;
        final float ASPECT_TOLERANCE = 0.1f;

        StreamConfigurationMap configs =
                mCameraInfo.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
        if (configs == null) {
            throw new RuntimeException("Cannot get available picture/preview sizes.");
        }
        Size[] outputSizes = configs.getOutputSizes(SurfaceHolder.class);

        Size outputSize = outputSizes[0];
        float outputAspect = (float) outputSize.getWidth() / outputSize.getHeight();
        for (Size candidateSize : outputSizes) {
            if (candidateSize.getWidth() > MAX_WIDTH) continue;
            float candidateAspect = (float) candidateSize.getWidth() / candidateSize.getHeight();
            boolean goodCandidateAspect =
                    Math.abs(candidateAspect - TARGET_ASPECT) < ASPECT_TOLERANCE;
            boolean goodOutputAspect =
                    Math.abs(outputAspect - TARGET_ASPECT) < ASPECT_TOLERANCE;
            if ((goodCandidateAspect && !goodOutputAspect) ||
                    candidateSize.getWidth() > outputSize.getWidth()) {
                outputSize = candidateSize;
                outputAspect = candidateAspect;
            }
        }
        Log.i(TAG, "Resolution chosen: " + outputSize);

        // Configure processing
        mProcessor = new ViewfinderProcessor(mRS, outputSize);
        setupProcessor();

        // Configure the output view - this will fire surfaceChanged
        mPreviewView.setAspectRatio(outputAspect);
        mPreviewView.getHolder().setFixedSize(outputSize.getWidth(), outputSize.getHeight());
    }