public static void main(String[] args) throws Exception { SoftSynthesizer synth = new SoftSynthesizer(); synth.openStream(new AudioFormat(44100, 16, 1, true, false), null); SoftAudioBuffer in1 = new SoftAudioBuffer(250, synth.getFormat()); SoftAudioBuffer out1 = new SoftAudioBuffer(250, synth.getFormat()); float[] testdata1 = new float[in1.getSize()]; float[] n1a = in1.array(); float[] out1a = out1.array(); for (int i = 0; i < n1a.length; i++) { testdata1[i] = (float) Math.sin(i * 0.3) * 0.9f; n1a[i] = testdata1[i]; out1a[i] = 1; } SoftLimiter limiter = new SoftLimiter(); limiter.init(44100, 147); limiter.setMixMode(false); limiter.setInput(0, in1); limiter.setOutput(0, out1); limiter.processControlLogic(); limiter.processAudio(); limiter.processControlLogic(); limiter.processAudio(); // Limiter should delay audio by one buffer, // and there should almost no different in output v.s. input for (int i = 0; i < n1a.length; i++) { if (Math.abs(out1a[i] - testdata1[i]) > 0.00001) throw new Exception("input != output"); } synth.close(); }
static void setUp() throws Exception { 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; } test_byte_array = new byte[testarray.length * 2]; AudioFloatConverter.getConverter(format).toByteArray(testarray, test_byte_array); buffer = new ModelByteBuffer(test_byte_array); byte[] test_byte_array2 = new byte[testarray.length * 3]; buffer24 = new ModelByteBuffer(test_byte_array2); test_byte_array_8ext = new byte[testarray.length]; byte[] test_byte_array_8_16 = new byte[testarray.length * 2]; AudioFloatConverter.getConverter(format24).toByteArray(testarray, test_byte_array2); int ix = 0; int x = 0; for (int i = 0; i < test_byte_array_8ext.length; i++) { test_byte_array_8ext[i] = test_byte_array2[ix++]; test_byte_array_8_16[x++] = test_byte_array2[ix++]; test_byte_array_8_16[x++] = test_byte_array2[ix++]; } buffer16_8 = new ModelByteBuffer(test_byte_array_8_16); buffer8 = new ModelByteBuffer(test_byte_array_8ext); AudioInputStream ais = new AudioInputStream(buffer.getInputStream(), format, testarray.length); ByteArrayOutputStream baos = new ByteArrayOutputStream(); AudioSystem.write(ais, AudioFileFormat.Type.WAVE, baos); buffer_wave = new ModelByteBuffer(baos.toByteArray()); }
static void setUp() throws Exception { 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; } test_byte_array = new byte[testarray.length * 2]; AudioFloatConverter.getConverter(format).toByteArray(testarray, test_byte_array); test_file = File.createTempFile("test", ".raw"); FileOutputStream fos = new FileOutputStream(test_file); fos.write(test_byte_array); }
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( AudioFloatConverter.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"); } } } }