//spusti prevod souboru na wav,ktery je mozno vykreslovat - skonci po naplneni zobrazovaciho bufferu, pot
public bool WaveChunksConversion(string aCesta, string aCestaDocasnychWAV, long aDelkaJednohoSouboruMS)
{
BinaryWriter output = null;
try
{
//nulovani promennych
this.temporaryWaveFiles.Clear();
this._FileLengthMS = (long)WavReader.ReturnAudioLength(aCesta).TotalMilliseconds;
if (aCesta == null || aCestaDocasnychWAV == null || FileLengthMS <= 0)
return false; //chybne nastaveni nebo delka souboru k prevodu
this.TemporaryWAVsPath = aCestaDocasnychWAV;
this.temporaryWaveFiles = new List<string>();
delkaDocasnehoWav = (aDelkaJednohoSouboruMS / 1000) * this.Frequency; //pocet vzorku v 1 docasnem souboru
this.delkaDocasnehoWavMS = aDelkaJednohoSouboruMS;
int pIndexDocasneho = -1;
//vytvoren proces zapocato rucni vytvareni prevadeni docasneho souboru a plneni bufferu programu
//po naplneni zobrazovaciho bufferu lze vykreslit vlnu v programu-
prPrevod = new Process();
prPrevod.StartInfo.FileName = FilePaths.FFmpegPath;
prPrevod.StartInfo.WorkingDirectory = new FileInfo(aCesta).DirectoryName;
prPrevod.StartInfo.Arguments = "-i \"" + aCesta + "\" -y -vn -ar 16000 -ac 1 -acodec pcm_s16le -f s16le -"; //nova data bez hlavicky
prPrevod.StartInfo.RedirectStandardInput = true;
prPrevod.StartInfo.RedirectStandardOutput = true;
prPrevod.StartInfo.RedirectStandardError = false;
prPrevod.StartInfo.UseShellExecute = false;
prPrevod.StartInfo.CreateNoWindow = true;
prPrevod.Start();
//nacteni hlavicky - a alokovani pomocnych bufferu pro tuto operaci cteni
byte[] buffer2 = new byte[4096];
short[] buffer2s = new short[buffer2.Length / 2];
ChannelCount = 1;
this.Frequency = 16000;
this.SampleSize = 2;
long pPocetVzorku2Delta = Const.DELKA_PRVNIHO_RAMCE_ZOBRAZOVACIHO_BUFFERU_MS * (this.Frequency / 1000);
SampleCount = pPocetVzorku2Delta;
long pPocetVzorku2 = Const.DISPLAY_BUFFER_LENGTH_MS * (this.Frequency / 1000);
//nacitani jednotlivych dat
this._LoadedData = new Int16[pPocetVzorku2];
int i = 0;
short dato = 0; //pomocna
//prvni docasny wav soubor tmp
pIndexDocasneho = 0;
temporaryWaveFiles.Add(Path.Combine(TemporaryWAVsPath, pIndexDocasneho.ToString() + ".wav"));
output = new BinaryWriter(new FileStream(temporaryWaveFiles[pIndexDocasneho], FileMode.Create));
Stream outputbase = output.BaseStream;
//prazdna hlavicka
byte[] emptyHeader = new byte[44];
output.Write(emptyHeader);
//
long pPocetNactenychVzorkuCelkem = 0;
int pPocetNactenych = 1; //pocatecni inicializace nacitani,aby neskoncil cyklus
long j = 0; //pomocna pro indexaci v souborech
Stream outstream = prPrevod.StandardOutput.BaseStream;
for (i = 0; pPocetNactenych > 0; )
{
//Termination
if (Interlocked.CompareExchange(ref _conversionStopper, 1, 1) == 1)
return false;
pPocetNactenych = outstream.Read(buffer2, 0, buffer2.Length);
Buffer.BlockCopy(buffer2, 0, buffer2s, 0, pPocetNactenych);
int writeoffset = 0;
int writecnt = 0;
for (int k = 0; k < pPocetNactenych / 2; k++, i++)
{
//dato = BitConverter.ToInt16(buffer2, k*2);
dato = buffer2s[k];
pPocetNactenychVzorkuCelkem++;
if (i == SampleCount) //first wave chunk completed.. -> show them
{
//poslani zpravy s daty bufferu
AudioBufferEventArgs e = new AudioBufferEventArgs(this._LoadedData, this._LoadedData.Length, 0, SampleCount / this.Frequency * 1000, Const.ID_BUFFER_WAVEFORMVISIBLE);
if (HaveData != null)
HaveData(this, e); // nacten ramec k zobrazeni a poslani tohoto ramce ven z tridy pomoci e
this._Loaded = true;
if (SampleCount + pPocetVzorku2Delta <= pPocetVzorku2 - 1)
{
SampleCount += pPocetVzorku2Delta;
}
}
if (i < SampleCount)
{
_LoadedData[i] = dato;
}
if (j >= delkaDocasnehoWav)
{
// zapsani bufferu jako bytu..
outputbase.Write(buffer2, writeoffset * 2, writecnt * 2);
writeoffset = writecnt;
writecnt = 0;
j = 0;
//zapsani skutecne hlavicky WAV
output.Seek(0, SeekOrigin.Begin);
output.Write((GetWaveHeader((Int32)output.BaseStream.Length - 44)));
output.Dispose();
output = null;
pIndexDocasneho++;
temporaryWaveFiles.Add(Path.Combine(TemporaryWAVsPath, pIndexDocasneho.ToString() + ".wav"));
AudioBufferEventArgs2 e2 = new AudioBufferEventArgs2(pIndexDocasneho, (pIndexDocasneho + 1) * this.delkaDocasnehoWavMS);
if (HaveFileNumber != null)
HaveFileNumber(this, e2);
if (Interlocked.CompareExchange(ref _conversionStopper, 1, 1) == 1)
return false;
output = new BinaryWriter(new FileStream(temporaryWaveFiles[pIndexDocasneho], FileMode.Create));
outputbase = output.BaseStream;
//pridani hlavicky-prazdne-zatim-pozdeji dodelat
output.Write(emptyHeader);
//
}
if (pPocetNactenych > 0)
{
writecnt++;
//output.Write(dato); //zapsani do docasneho souboru
}
j++;
}
// zapsani bufferu jako bytu..
outputbase.Write(buffer2, writeoffset * 2, writecnt * 2);
}
if (Interlocked.CompareExchange(ref _conversionStopper, 1, 1) == 1)
return false;
prPrevod.Close();
prPrevod = null;
this._FileLengthMS = (long)((float)(pPocetNactenychVzorkuCelkem) / (this.Frequency / 1000));
if (output != null)
{
//zapsani skutecne hlavicky WAV
output.Seek(0, SeekOrigin.Begin);
output.Write((GetWaveHeader((Int32)output.BaseStream.Length - 44)));
output.Close(); //zavreni souboru pro zapis dat
output = null;
AudioBufferEventArgs2 e2 = new AudioBufferEventArgs2(pIndexDocasneho, this.FileLengthMS);
if (HaveFileNumber != null)
HaveFileNumber(this, e2);
}
this._Loaded = true;
this._Converted = true; //dokoncen prevod audio souboru
this._FilePath = aCesta;
if (i < SampleCount) //soubor je kratsi nez zobrazovaci buffer
{
short[] pPole = new short[i];
for (int k = 0; k < i - 1; k++)
{
pPole[k] = this._LoadedData[k];
}
AudioBufferEventArgs e = new AudioBufferEventArgs(pPole, pPole.Length, 0, (long)(((double)i * 1000) / this.Frequency), Const.ID_BUFFER_WAVEFORMVISIBLE);
//pokusne pridano
this.SampleCount = i;
if (HaveData != null)
HaveData(this, e); // nacten ramec k zobrazeni a poslani tohoto ramce ven z tridy pomoci e
}
this.SampleCount = i;
if (TemporaryWavesDone != null)
{
TemporaryWavesDone(this, new EventArgs());
}
return true;
}
catch (Exception ex)
{
if (output != null)
{
output.Close();
output = null;
}
this._Converted = true; //i pres spadnuti je nacteni ok, doresit preteceni indexu!!!!!!
if (TemporaryWavesDone != null && !(ex is ThreadAbortException))
TemporaryWavesDone(this, new EventArgs());
return false;
}
finally
{
if (output != null)
output.Dispose();
}
}
//spusti prevod souboru na wav,ktery je mozno vykreslovat - skonci po naplneni zobrazovaciho bufferu, pot
public bool WaveChunksConversion(string aCesta, string aCestaDocasnychWAV, long aDelkaJednohoSouboruMS)
{
BinaryWriter output = null;
try
{
//nulovani promennych
this.temporaryWaveFiles.Clear();
this._FileLengthMS = (long)WavReader.ReturnAudioLength(aCesta).TotalMilliseconds;
if (aCesta == null || aCestaDocasnychWAV == null || FileLengthMS <= 0)
{
return(false); //chybne nastaveni nebo delka souboru k prevodu
}
this.TemporaryWAVsPath = aCestaDocasnychWAV;
this.temporaryWaveFiles = new List <string>();
delkaDocasnehoWav = (aDelkaJednohoSouboruMS / 1000) * this.Frequency; //pocet vzorku v 1 docasnem souboru
this.delkaDocasnehoWavMS = aDelkaJednohoSouboruMS;
int pIndexDocasneho = -1;
//vytvoren proces zapocato rucni vytvareni prevadeni docasneho souboru a plneni bufferu programu
//po naplneni zobrazovaciho bufferu lze vykreslit vlnu v programu-
prPrevod = new Process();
prPrevod.StartInfo.FileName = FilePaths.FFmpegPath;
prPrevod.StartInfo.WorkingDirectory = new FileInfo(aCesta).DirectoryName;
prPrevod.StartInfo.Arguments = "-i \"" + aCesta + "\" -y -vn -ar 16000 -ac 1 -acodec pcm_s16le -f s16le -"; //nova data bez hlavicky
prPrevod.StartInfo.RedirectStandardInput = true;
prPrevod.StartInfo.RedirectStandardOutput = true;
prPrevod.StartInfo.RedirectStandardError = false;
prPrevod.StartInfo.UseShellExecute = false;
prPrevod.StartInfo.CreateNoWindow = true;
prPrevod.Start();
//nacteni hlavicky - a alokovani pomocnych bufferu pro tuto operaci cteni
byte[] buffer2 = new byte[4096];
short[] buffer2s = new short[buffer2.Length / 2];
ChannelCount = 1;
this.Frequency = 16000;
this.SampleSize = 2;
long pPocetVzorku2Delta = Const.DELKA_PRVNIHO_RAMCE_ZOBRAZOVACIHO_BUFFERU_MS * (this.Frequency / 1000);
SampleCount = pPocetVzorku2Delta;
long pPocetVzorku2 = Const.DISPLAY_BUFFER_LENGTH_MS * (this.Frequency / 1000);
//nacitani jednotlivych dat
this._LoadedData = new Int16[pPocetVzorku2];
int i = 0;
short dato = 0; //pomocna
//prvni docasny wav soubor tmp
pIndexDocasneho = 0;
temporaryWaveFiles.Add(Path.Combine(TemporaryWAVsPath, pIndexDocasneho.ToString() + ".wav"));
output = new BinaryWriter(new FileStream(temporaryWaveFiles[pIndexDocasneho], FileMode.Create));
Stream outputbase = output.BaseStream;
//prazdna hlavicka
byte[] emptyHeader = new byte[44];
output.Write(emptyHeader);
//
long pPocetNactenychVzorkuCelkem = 0;
int pPocetNactenych = 1; //pocatecni inicializace nacitani,aby neskoncil cyklus
long j = 0; //pomocna pro indexaci v souborech
Stream outstream = prPrevod.StandardOutput.BaseStream;
for (i = 0; pPocetNactenych > 0;)
{
//Termination
if (Interlocked.CompareExchange(ref _conversionStopper, 1, 1) == 1)
{
return(false);
}
pPocetNactenych = outstream.Read(buffer2, 0, buffer2.Length);
Buffer.BlockCopy(buffer2, 0, buffer2s, 0, pPocetNactenych);
int writeoffset = 0;
int writecnt = 0;
for (int k = 0; k < pPocetNactenych / 2; k++, i++)
{
//dato = BitConverter.ToInt16(buffer2, k*2);
dato = buffer2s[k];
pPocetNactenychVzorkuCelkem++;
if (i == SampleCount) //first wave chunk completed.. -> show them
{
//poslani zpravy s daty bufferu
AudioBufferEventArgs e = new AudioBufferEventArgs(this._LoadedData, this._LoadedData.Length, 0, SampleCount / this.Frequency * 1000, Const.ID_BUFFER_WAVEFORMVISIBLE);
if (HaveData != null)
{
HaveData(this, e); // nacten ramec k zobrazeni a poslani tohoto ramce ven z tridy pomoci e
}
this._Loaded = true;
if (SampleCount + pPocetVzorku2Delta <= pPocetVzorku2 - 1)
{
SampleCount += pPocetVzorku2Delta;
}
}
if (i < SampleCount)
{
_LoadedData[i] = dato;
}
if (j >= delkaDocasnehoWav)
{
// zapsani bufferu jako bytu..
outputbase.Write(buffer2, writeoffset * 2, writecnt * 2);
writeoffset = writecnt;
writecnt = 0;
j = 0;
//zapsani skutecne hlavicky WAV
output.Seek(0, SeekOrigin.Begin);
output.Write((GetWaveHeader((Int32)output.BaseStream.Length - 44)));
output.Dispose();
output = null;
pIndexDocasneho++;
temporaryWaveFiles.Add(Path.Combine(TemporaryWAVsPath, pIndexDocasneho.ToString() + ".wav"));
AudioBufferEventArgs2 e2 = new AudioBufferEventArgs2(pIndexDocasneho, (pIndexDocasneho + 1) * this.delkaDocasnehoWavMS);
if (HaveFileNumber != null)
{
HaveFileNumber(this, e2);
}
if (Interlocked.CompareExchange(ref _conversionStopper, 1, 1) == 1)
{
return(false);
}
output = new BinaryWriter(new FileStream(temporaryWaveFiles[pIndexDocasneho], FileMode.Create));
outputbase = output.BaseStream;
//pridani hlavicky-prazdne-zatim-pozdeji dodelat
output.Write(emptyHeader);
//
}
if (pPocetNactenych > 0)
{
writecnt++;
//output.Write(dato); //zapsani do docasneho souboru
}
j++;
}
// zapsani bufferu jako bytu..
outputbase.Write(buffer2, writeoffset * 2, writecnt * 2);
}
if (Interlocked.CompareExchange(ref _conversionStopper, 1, 1) == 1)
{
return(false);
}
prPrevod.Close();
prPrevod = null;
this._FileLengthMS = (long)((float)(pPocetNactenychVzorkuCelkem) / (this.Frequency / 1000));
if (output != null)
{
//zapsani skutecne hlavicky WAV
output.Seek(0, SeekOrigin.Begin);
output.Write((GetWaveHeader((Int32)output.BaseStream.Length - 44)));
output.Close(); //zavreni souboru pro zapis dat
output = null;
AudioBufferEventArgs2 e2 = new AudioBufferEventArgs2(pIndexDocasneho, this.FileLengthMS);
if (HaveFileNumber != null)
{
HaveFileNumber(this, e2);
}
}
this._Loaded = true;
this._Converted = true; //dokoncen prevod audio souboru
this._FilePath = aCesta;
if (i < SampleCount) //soubor je kratsi nez zobrazovaci buffer
{
short[] pPole = new short[i];
for (int k = 0; k < i - 1; k++)
{
pPole[k] = this._LoadedData[k];
}
AudioBufferEventArgs e = new AudioBufferEventArgs(pPole, pPole.Length, 0, (long)(((double)i * 1000) / this.Frequency), Const.ID_BUFFER_WAVEFORMVISIBLE);
//pokusne pridano
this.SampleCount = i;
if (HaveData != null)
{
HaveData(this, e); // nacten ramec k zobrazeni a poslani tohoto ramce ven z tridy pomoci e
}
}
this.SampleCount = i;
if (TemporaryWavesDone != null)
{
TemporaryWavesDone(this, new EventArgs());
}
return(true);
}
catch (Exception ex)
{
if (output != null)
{
output.Close();
output = null;
}
this._Converted = true; //i pres spadnuti je nacteni ok, doresit preteceni indexu!!!!!!
if (TemporaryWavesDone != null && !(ex is ThreadAbortException))
{
TemporaryWavesDone(this, new EventArgs());
}
return(false);
}
finally
{
if (output != null)
{
output.Dispose();
}
}
}