Merge "Add toString method to AudioProfile class"

import android.annotation.NonNull;

import java.util.Arrays;

import java.util.stream.Collectors;

/**

 * An AudioProfile is specific to an audio format and lists supported sampling rates and

 * channel masks for that format.  An {@link AudioDeviceInfo} has a list of supported AudioProfiles.

    public @NonNull int[] getSampleRates() {

        return mSamplingRates;

    }

    @Override

    public String toString() {

        StringBuilder sb = new StringBuilder("{");

        sb.append(AudioFormat.toLogFriendlyEncoding(mFormat));

        if (mSamplingRates != null && mSamplingRates.length > 0) {

            sb.append(", sampling rates=").append(Arrays.toString(mSamplingRates));

        }

        if (mChannelMasks != null && mChannelMasks.length > 0) {

            sb.append(", channel masks=").append(toHexString(mChannelMasks));

        }

        if (mChannelIndexMasks != null && mChannelIndexMasks.length > 0) {

            sb.append(", channel index masks=").append(Arrays.toString(mChannelIndexMasks));

        }

        sb.append("}");

        return sb.toString();

    }

    private static String toHexString(int[] ints) {

        if (ints == null || ints.length == 0) {

            return "";

        }

        return Arrays.stream(ints).mapToObj(anInt -> String.format("0x%02X, ", anInt))

                .collect(Collectors.joining());

    }

}