static void Run(string input, string text)
{
ConsoleProgress.Reset();
bool isInputFlac = Path.GetExtension(input).ToUpperInvariant() == ".FLAC";
if (isInputFlac)
{
// FLAC -> WAV
string inputFile = Path.Combine("flac", input);
string outputFile = Path.Combine("wav", Path.ChangeExtension(input, ".wav"));
if (!File.Exists(inputFile))
{
throw new ApplicationException("Input file " + inputFile + " cannot be found!");
}
using (WavWriter wav = new WavWriter(outputFile))
using (FlacReader flac = new FlacReader(inputFile, wav))
flac.Process();
}
else
{
// WAV -> FLAC
string inputFile = Path.Combine("wav", input);
string outputFile = Path.Combine("flac", Path.ChangeExtension(input, ".flac"));
if (!File.Exists(inputFile))
{
throw new ApplicationException("Input file " + inputFile + " cannot be found!");
}
using (WavReader wav = new WavReader(inputFile))
{
using (FlacWriter flac = new FlacWriter(File.Create(outputFile), wav.BitDepth, wav.Channels, wav.SampleRate))
{
// Buffer for 1 second's worth of audio data
byte[] buffer = new byte[1 * wav.Bitrate / 8];
int bytesRead;
do
{
ConsoleProgress.Update(wav.InputStream.Position, wav.InputStream.Length);
bytesRead = wav.InputStream.Read(buffer, 0, buffer.Length);
flac.Write(buffer, 0, bytesRead);
} while (bytesRead > 0);
// Finished!
}
}
}
}
private void Write(IntPtr context, IntPtr frame, IntPtr buffer, IntPtr userData)
{
FlacFrame f = (FlacFrame)Marshal.PtrToStructure(frame, typeof(FlacFrame));
int samplesPerChannel = f.Header.BlockSize;
inputBitDepth = f.Header.BitsPerSample;
inputChannels = f.Header.Channels;
inputSampleRate = f.Header.SampleRate;
if (!writer.HasHeader)
{
writer.WriteHeader(inputSampleRate, inputBitDepth, inputChannels);
}
if (totalSamples < 0)
{
totalSamples = FLAC__stream_decoder_get_total_samples(context);
}
if (samples == null)
{
samples = new int[samplesPerChannel * inputChannels];
}
if (samplesChannel == null)
{
samplesChannel = new float[inputChannels];
}
for (int i = 0; i < inputChannels; i++)
{
IntPtr pChannelBits = Marshal.ReadIntPtr(buffer, i * IntPtr.Size);
Marshal.Copy(pChannelBits, samples, i * samplesPerChannel, samplesPerChannel);
}
// For each channel, there are BlockSize number of samples, so let's process these.
for (int i = 0; i < samplesPerChannel; i++)
{
for (int c = 0; c < inputChannels; c++)
{
int v = samples[i + c * samplesPerChannel];
switch (inputBitDepth / 8)
{
case sizeof(short): // 16-bit
writer.WriteInt16(v);
break;
case sizeof(int) - sizeof(byte): // 24-bit
writer.WriteInt24(v);
break;
default:
throw new NotSupportedException("Input FLAC bit depth is not supported!");
}
}
processedSamples += 1;
}
// Show progress
if (totalSamples > 0)
{
ConsoleProgress.Update(processedSamples, totalSamples);
}
}