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/* @test

   @summary Test AudioFloatConverter toFloatArray method */

import javax.sound.sampled.*;

import com.sun.media.sound.*;

public class ToFloatArray {

    public static void main(String[] args) throws Exception {

        float[] testarray = new float[1024];

        for (int i = 0; i < 1024; i++) {

            double ii = i / 1024.0;

            ii = ii * ii;

            testarray[i] = (float)Math.sin(10*ii*2*Math.PI);

            testarray[i] += (float)Math.sin(1.731 + 2*ii*2*Math.PI);

            testarray[i] += (float)Math.sin(0.231 + 6.3*ii*2*Math.PI);

            testarray[i] *= 0.3;

        }

        // Check conversion using PCM_FLOAT

        for (int big = 0; big < 2; big+=1)

        for (int bits = 32; bits <= 64; bits+=32) {

            AudioFormat frm = new AudioFormat(

                    AudioFormat.Encoding.PCM_FLOAT,

                    44100, bits, 1, bits/8,

                    44100, big==1);

            byte[] buff = new byte[testarray.length * frm.getFrameSize()];

            float[] testarray2 = new float[testarray.length];

            AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);

            conv.toByteArray(testarray, buff);

            conv.toFloatArray(buff, testarray2);

            for (int i = 0; i < testarray2.length; i++) {

                if(Math.abs(testarray[i] - testarray2[i]) > 0.05)

                    throw new RuntimeException("Conversion failed for " + frm  +" , arrays not equal enough!\n");

            }

        }

        // Check conversion from float2byte and byte2float.

        for (int big = 0; big < 2; big+=1)

        for (int signed = 0; signed < 2; signed+=1)

        for (int bits = 6; bits <= 40; bits+=2) {

            AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);

            byte[] buff = new byte[testarray.length * frm.getFrameSize()];

            float[] testarray2 = new float[testarray.length];

            AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);

            conv.toByteArray(testarray, buff);

            conv.toFloatArray(buff, testarray2);

            for (int i = 0; i < testarray2.length; i++) {

                if(Math.abs(testarray[i] - testarray2[i]) > 0.05)

                    throw new RuntimeException("Conversion failed for " + frm  +" , arrays not equal enough!\n");

            }

        }

        // Check big/little

        for (int big = 0; big < 2; big+=1)

        for (int signed = 0; signed < 2; signed+=1)

        for (int bits = 6; bits <= 40; bits+=2) {

            AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);

            byte[] buff = new byte[testarray.length * frm.getFrameSize()];

            AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);

            conv.toByteArray(testarray, buff);

            byte[] buff2 = new byte[testarray.length * frm.getFrameSize()];

            int fs = frm.getFrameSize();

            for (int i = 0; i < buff2.length; i+=fs) {

                for (int j = 0; j < fs; j++) {

                    buff2[i+(fs-j-1)] = buff[i+j];

                }

            }

            float[] testarray2 = new float[testarray.length];

            AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==1, big==0);

            AudioFloatConverter.getConverter(frm2).toFloatArray(buff2, testarray2);

            for (int i = 0; i < testarray2.length; i++) {

                if(Math.abs(testarray[i] - testarray2[i]) > 0.05)

                {

                    throw new RuntimeException("Conversion failed for " + frm  +" to " + frm2 + " , arrays not equal enough!\n");

                }

            }

        }

        // Check signed/unsigned

        for (int big = 0; big < 2; big+=1)

        for (int signed = 0; signed < 2; signed+=1)

        for (int bits = 6; bits <= 40; bits+=2) {

            AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);

            byte[] b = new byte[testarray.length * frm.getFrameSize()];

            AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);

            conv.toByteArray(testarray, b);

            int fs = frm.getFrameSize();

            if(big==1)

            {

                for(int i=0; i < b.length; i+= fs )

                    b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);

            }

            else

            {

                for(int i=(0+fs-1); i < b.length; i+= fs )

                    b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);

            }

            float[] testarray2 = new float[testarray.length];

            AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==0, big==1);

            AudioFloatConverter.getConverter(frm2).toFloatArray(b, testarray2);

            for (int i = 0; i < testarray2.length; i++) {

                if(Math.abs(testarray[i] - testarray2[i]) > 0.05)

                {

                    throw new RuntimeException("Conversion failed for " + frm  +" to " + frm2 + " , arrays not equal enough!\n");

                }

            }

        }

        // Check if conversion 32->24, 24->16, 16->8 result in same float data

        AudioFormat frm = new AudioFormat(44100, 40, 1, true, true);

        byte[] b = new byte[testarray.length * frm.getFrameSize()];

        AudioFloatConverter.getConverter(frm).toByteArray(testarray, b);

        for (int bits = 6; bits <= 40; bits+=2) {

            AudioFormat frm2 = new AudioFormat(44100, bits, 1, true, true);

            byte[] b2 = new byte[testarray.length * frm2.getFrameSize()];

            int fs1 = frm.getFrameSize();

            int fs2 = frm2.getFrameSize();

            int ii = 0;

            for (int i = 0; i < b.length; i+=fs1)

                for (int j = 0; j < fs2; j++)

                    b2[ii++] = b[i+j];

            float[] testarray2 = new float[testarray.length];

            AudioFloatConverter.getConverter(frm2).toFloatArray(b2, testarray2);

            for (int i = 0; i < testarray2.length; i++) {

                if(Math.abs(testarray[i] - testarray2[i]) > 0.05)

                {

                    throw new RuntimeException("Conversion failed for " + frm  +" to " + frm2 + " , arrays not equal enough!\n");

                }

            }

        }

    }

}