Examples with Rational android.util.Rational used on opensource projects

Example 66 with Rational

use of android.util.Rational in project android_frameworks_base by AOSPA.

the class RationalTest method testConstructor.

@SmallTest
public void testConstructor() {
    // Simple case
    Rational r = new Rational(1, 2);
    assertEquals(1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    // Denominator negative
    r = new Rational(-1, 2);
    assertEquals(-1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    // Numerator negative
    r = new Rational(1, -2);
    assertEquals(-1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    // Both negative
    r = new Rational(-1, -2);
    assertEquals(1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    // Infinity.
    r = new Rational(1, 0);
    assertEquals(1, r.getNumerator());
    assertEquals(0, r.getDenominator());
    // Negative infinity.
    r = new Rational(-1, 0);
    assertEquals(-1, r.getNumerator());
    assertEquals(0, r.getDenominator());
    // NaN.
    r = new Rational(0, 0);
    assertEquals(0, r.getNumerator());
    assertEquals(0, r.getDenominator());
}

Example 67 with Rational

use of android.util.Rational in project android_frameworks_base by AOSPA.

the class ColorSpaceTransform method copyElements.

/**
     * Copy the {@link Rational} elements in row-major order from this matrix into the destination.
     *
     * @param destination
     *          an array big enough to hold at least {@code 9} elements after the
     *          {@code offset}
     * @param offset
     *          a non-negative offset into the array
     * @throws NullPointerException
     *          If {@code destination} was {@code null}
     * @throws ArrayIndexOutOfBoundsException
     *          If there's not enough room to write the elements at the specified destination and
     *          offset.
     */
public void copyElements(Rational[] destination, int offset) {
    checkArgumentNonnegative(offset, "offset must not be negative");
    checkNotNull(destination, "destination must not be null");
    if (destination.length - offset < COUNT) {
        throw new ArrayIndexOutOfBoundsException("destination too small to fit elements");
    }
    for (int i = 0, j = 0; i < COUNT; ++i, j += RATIONAL_SIZE) {
        int numerator = mElements[j + OFFSET_NUMERATOR];
        int denominator = mElements[j + OFFSET_DENOMINATOR];
        destination[i + offset] = new Rational(numerator, denominator);
    }
}

Example 68 with Rational

use of android.util.Rational in project android_frameworks_base by AOSPA.

the class StaticMetadata method getAeCompensationStepChecked.

/**
     * Get value of key android.control.aeCompensationStep and do the sanity check.
     *
     * @return default value if the value is null.
     */
public Rational getAeCompensationStepChecked() {
    Key<Rational> key = CameraCharacteristics.CONTROL_AE_COMPENSATION_STEP;
    Rational compensationStep = getValueFromKeyNonNull(key);
    if (compensationStep == null) {
        // Return default step.
        return CONTROL_AE_COMPENSATION_STEP_DEFAULT;
    }
    // Legacy devices don't have a minimum step requirement
    if (isHardwareLevelLimitedOrBetter()) {
        float compensationStepF = (float) compensationStep.getNumerator() / compensationStep.getDenominator();
        checkTrueForKey(key, " value must be no more than 1/2", compensationStepF <= 0.5f);
    }
    return compensationStep;
}

Example 69 with Rational

use of android.util.Rational in project android_frameworks_base by AOSPA.

the class StaticMetadata method getAeCompensationRangeChecked.

/**
     * Get value of key android.control.aeCompensationRange and do the sanity check.
     *
     * @return default value if the value is null or malformed.
     */
public Range<Integer> getAeCompensationRangeChecked() {
    Key<Range<Integer>> key = CameraCharacteristics.CONTROL_AE_COMPENSATION_RANGE;
    Range<Integer> compensationRange = getValueFromKeyNonNull(key);
    Rational compensationStep = getAeCompensationStepChecked();
    float compensationStepF = compensationStep.floatValue();
    final Range<Integer> DEFAULT_RANGE = Range.create((int) (CONTROL_AE_COMPENSATION_RANGE_DEFAULT_MIN / compensationStepF), (int) (CONTROL_AE_COMPENSATION_RANGE_DEFAULT_MAX / compensationStepF));
    final Range<Integer> ZERO_RANGE = Range.create(0, 0);
    if (compensationRange == null) {
        return ZERO_RANGE;
    }
    // Legacy devices don't have a minimum range requirement
    if (isHardwareLevelLimitedOrBetter() && !compensationRange.equals(ZERO_RANGE)) {
        checkTrueForKey(key, " range value must be at least " + DEFAULT_RANGE + ", actual " + compensationRange + ", compensation step " + compensationStep, compensationRange.getLower() <= DEFAULT_RANGE.getLower() && compensationRange.getUpper() >= DEFAULT_RANGE.getUpper());
    }
    return compensationRange;
}

Example 70 with Rational

use of android.util.Rational in project android_frameworks_base by AOSPA.

the class CameraMetadataTest method testReadWritePrimitiveArray.

@SmallTest
public void testReadWritePrimitiveArray() {
    // int32 (n)
    checkKeyGetAndSet("android.sensor.info.sensitivityRange", int[].class, new int[] { 0xC0FFEE, 0xDEADF00D });
    // byte (n)
    checkKeyGetAndSet("android.statistics.faceScores", byte[].class, new byte[] { 1, 2, 3, 4 });
    // int64 (n)
    checkKeyGetAndSet("android.scaler.availableProcessedMinDurations", long[].class, new long[] { 0xABCD12345678FFFFL, 0x1234ABCD5678FFFFL, 0xFFFF12345678ABCDL });
    // float (n)
    checkKeyGetAndSet("android.lens.info.availableApertures", float[].class, new float[] { Float.MAX_VALUE, Float.MIN_NORMAL, Float.MIN_VALUE });
    // double (n) -- in particular double x 3
    checkKeyGetAndSet("android.jpeg.gpsCoordinates", double[].class, new double[] { Double.MAX_VALUE, Double.MIN_NORMAL, Double.MIN_VALUE });
    // rational (n) -- in particular rational x 9
    checkKeyGetAndSet("android.sensor.calibrationTransform1", Rational[].class, new Rational[] { new Rational(1, 2), new Rational(3, 4), new Rational(5, 6), new Rational(7, 8), new Rational(9, 10), new Rational(10, 11), new Rational(12, 13), new Rational(14, 15), new Rational(15, 16) });
    /**
         * Weirder cases, that don't map 1:1 with the native types
         */
    // bool (n) -- with TYPE_BYTE
    checkKeyGetAndSet("android.control.aeLock", boolean[].class, new boolean[] { true, false, true });
    // integer (n) -- with TYPE_BYTE
    checkKeyGetAndSet("android.control.aeAvailableModes", int[].class, new int[] { 1, 2, 3, 4 });
}