Exemplo n.º 1
0
        public AdxFile(Stream aStream)
        {
            ByteArray lByteArray = new ByteArrayBig(aStream);

            sampleArray = new float[2][];

            adxHeader = new AdxHeader(lByteArray);
            adxData   = new AdxData(lByteArray, adxHeader);

            sampleArray = adxData.GetSampleArray();
        }
Exemplo n.º 2
0
        public AdxData(ByteArray aByteArray, AdxHeader aAdxHeader)
        {
            sampleArray = new float[aAdxHeader.GetChannelLength()][];

            for (int i = 0; i < aAdxHeader.GetChannelLength(); i++)
            {
                sampleArray[i] = new float[aAdxHeader.GetSampleLength()];
            }

            int s00 = 0;
            int s10 = 0;
            int s20 = 0;
            int d0  = 0;

            int s01 = 0;
            int s11 = 0;
            int s21 = 0;
            int d1  = 0;

            for (int I = 0; (I + 1) * 32 < aAdxHeader.GetSampleLength(); I++)
            {
                int scale = aByteArray.ReadInt16();

                for (int i = 0; i < 16; i++)
                {
                    int lBase = I * 32;
                    int lIn   = aByteArray.ReadByte();

                    d0 = lIn >> 4;

                    if ((d0 & 8) != 0)
                    {
                        d0 -= 16;
                    }

                    s00 = (0x4000 * d0 * scale + 0x7298 * s10 - 0x3350 * s20) >> 14;

                    if (s00 > 32767)
                    {
                        s00 = 32767;
                    }
                    else if (s00 < -32768)
                    {
                        s00 = -32768;
                    }

                    sampleArray[0][lBase + i * 2 + 0] = ( float )s00 / ( float )0x8000;

                    s20 = s10;
                    s10 = s00;

                    d0 = lIn & 15;

                    if ((d0 & 8) != 0)
                    {
                        d0 -= 16;
                    }

                    s00 = (0x4000 * d0 * scale + 0x7298 * s10 - 0x3350 * s20) >> 14;

                    if (s00 > 32767)
                    {
                        s00 = 32767;
                    }
                    else if (s00 < -32768)
                    {
                        s00 = -32768;
                    }

                    sampleArray[0][lBase + i * 2 + 1] = ( float )s00 / ( float )0x8000;

                    s20 = s10;
                    s10 = s00;
                }

                scale = aByteArray.ReadInt16();

                for (int i = 0; i < 16; i++)
                {
                    int lBase = I * 32;
                    int lIn   = aByteArray.ReadByte();

                    d1 = lIn >> 4;

                    if ((d1 & 8) != 0)
                    {
                        d1 -= 16;
                    }

                    s01 = (0x4000 * d1 * scale + 0x7298 * s11 - 0x3350 * s21) >> 14;

                    if (s01 > 32767)
                    {
                        s01 = 32767;
                    }
                    else if (s01 < -32768)
                    {
                        s01 = -32768;
                    }

                    sampleArray[1][lBase + i * 2 + 0] = ( float )s01 / ( float )0x8000;

                    s21 = s11;
                    s11 = s01;

                    d1 = lIn & 15;

                    if ((d1 & 8) != 0)
                    {
                        d1 -= 16;
                    }

                    s01 = (0x4000 * d1 * scale + 0x7298 * s11 - 0x3350 * s21) >> 14;

                    if (s01 > 32767)
                    {
                        s01 = 32767;
                    }
                    else if (s01 < -32768)
                    {
                        s01 = -32768;
                    }

                    sampleArray[1][lBase + i * 2 + 1] = ( float )s01 / ( float )0x8000;

                    s21 = s11;
                    s11 = s01;
                }
            }
        }