public void Start()
{
int NumSamples = InputBitmap.Width * InputBitmap.Height;
byte[] Samples = new byte[NumSamples];
OutputWav = new WaveFile(1, 16, 44000);
if (InputBitmap == null)
{
throw new Exception(NoInputBitmap);
}
double[] data = new double[InputBitmap.Height];
int w = 0;
for (int i = 0; i < InputBitmap.Width; i++)
{
for (int j = 0; j < InputBitmap.Height; j++)
{
Color C = InputBitmap.GetPixel(i, j);
data[j] = (C.R + C.G + C.B) / 3;
}
FFT_Img2Wav.inverse(data);
// Ciclo per tutti i data
for (int x = 0; x < data.Length; x++)
{
Samples[w] = (byte)(MAX_DATA * data[x]);
w++;
}
}
OutputWav.SetData(Samples, NumSamples);
}
public static void KcsEncode300(Stream stream, byte[] dataBytes)
{
if (sampleRate % 300 != 0)
{
throw new ArgumentException("Sample rate not evenly divisible by baud.");
}
const uint bitSamples = sampleRate / 300;
const uint frameSize = 11; // leading zero, eight data bits, two trailing ones
WaveFile waveFile = new WaveFile(sampleRate, 1, 8);
// signed byte buffer = dataBytes * byte frameSize * samples/bit
sbyte[] waveData = new sbyte[dataBytes.Length * frameSize * bitSamples]; // bytes * bits/byte * samples/bit = samples
uint index = 0;
for (int i = 0; i < dataBytes.Length; i++)
{
bool[] bits = GetBits(dataBytes[i]);
index = WriteBit300(waveData, index, false, bitSamples);
for (int j = 0; j < 8; j++)
{
index = WriteBit300(waveData, index, bits[j], bitSamples);
}
index = WriteBit300(waveData, index, true, bitSamples);
index = WriteBit300(waveData, index, true, bitSamples);
}
byte[] outputBytes = new byte[waveData.Length];
Buffer.BlockCopy(waveData, 0, outputBytes, 0, outputBytes.Length);
waveFile.SetData(outputBytes);
waveFile.WriteToStream(stream);
}
