private void OnPlaybackStopped(object sender, StoppedEventArgs args)
{
OutputDevice.Dispose();
OutputDevice = null;
AudioFile.Dispose();
AudioFile = null;
}
public void PlayFile(FileInfo file)
{
FileName = file.Name;
WavePlayer.Stop();
AudioFile?.Dispose();
AudioFile = new AudioFileReader(file.FullName);
WavePlayer.Init(AudioFile);
TotalLength = AudioFile.TotalTime;
}
public void Stop()
{
_isPlaying = false;
_audioQueue.Stop(true);
_audioFile.Dispose();
_audioQueue.Dispose();
_isPrepared = false;
}
public void Dispose()
{
foreach (var instance in fireAndForgetQueue)
{
instance.Dispose();
}
fireAndForgetQueue.Clear();
audioFile.Dispose();
audioFile = null;
}
public void Dispose()
{
_isRecording = false;
_queue.Stop(true);
_audioFile.Dispose();
_queue.Dispose();
_queue = null;
_audioFile = null;
}
private void DisposeCurrentSong()
{
SongTimer.Enabled = false;
if (OutputDevice != null)
{
OutputDevice.PlaybackStopped -= OutputDevice_PlaybackStopped;
OutputDevice.Dispose();
}
if (AudioFile != null)
{
AudioFile.Dispose();
}
pictureBoxAlbumArt.Image = null;
textBoxCurrentSong.Text = string.Empty;
CurrentSong = string.Empty;
SongTimer.Enabled = true;
}
public void OpenWaveFile(string fileName, MMDevice device)
{
CloseWaveFile();
mDrawSource = CodecFactory.Instance.GetCodec(fileName).ToSampleSource().ToMono();
mDevice = device;
mFilename = fileName;
AudioFile file = new AudioFile(fileName, ReadStyle.Average);
if (file.Tag.Performers != null && file.Tag.Title != null)
{
label1.Text = file.Tag.Performers[0] + " - " + file.Tag.Title;
}
else
{
label1.Text = Filename;
}
file.Dispose();
//ThreadStart starter = OpenWaveFileThread;d
//starter += () =>
//{
// //комментарий
//};
//Thread thread = new Thread(starter) { IsBackground = true };
////MainForm.ThreadStartEvent();
//thread.Start();
Task nt = Task.Run(() => OpenWaveFileThread());
var divisionawaiter = nt.GetAwaiter();
divisionawaiter.OnCompleted(() => {
MainForm.ThreadFinishEvent();
});
}
bool DoConvertFile(CFUrl sourceURL, NSUrl destinationURL, AudioFormatType outputFormatType, double outputSampleRate)
{
// in this sample we should never be on the main thread here
Debug.Assert(!NSThread.IsMain);
// transition thread state to State::Running before continuing
AppDelegate.ThreadStateSetRunning();
Debug.WriteLine("DoConvertFile");
// get the source file
AudioFile sourceFile = AudioFile.Open(sourceURL, AudioFilePermission.Read);
var srcFormat = (AudioStreamBasicDescription)sourceFile.DataFormat;
var dstFormat = new AudioStreamBasicDescription();
// setup the output file format
dstFormat.SampleRate = (outputSampleRate == 0 ? srcFormat.SampleRate : outputSampleRate); // set sample rate
if (outputFormatType == AudioFormatType.LinearPCM)
{
// if the output format is PCM create a 16-bit int PCM file format description as an example
dstFormat.Format = AudioFormatType.LinearPCM;
dstFormat.ChannelsPerFrame = srcFormat.ChannelsPerFrame;
dstFormat.BitsPerChannel = 16;
dstFormat.BytesPerPacket = dstFormat.BytesPerFrame = 2 * dstFormat.ChannelsPerFrame;
dstFormat.FramesPerPacket = 1;
dstFormat.FormatFlags = AudioFormatFlags.LinearPCMIsPacked | AudioFormatFlags.LinearPCMIsSignedInteger;
}
else
{
// compressed format - need to set at least format, sample rate and channel fields for kAudioFormatProperty_FormatInfo
dstFormat.Format = outputFormatType;
dstFormat.ChannelsPerFrame = (outputFormatType == AudioFormatType.iLBC ? 1 : srcFormat.ChannelsPerFrame); // for iLBC num channels must be 1
// use AudioFormat API to fill out the rest of the description
AudioFormatError afe = AudioStreamBasicDescription.GetFormatInfo(ref dstFormat);
if (afe != AudioFormatError.None)
{
Debug.Print("Cannot create destination format {0:x}", afe);
AppDelegate.ThreadStateSetDone();
return(false);
}
}
// create the AudioConverter
AudioConverterError ce;
var converter = AudioConverter.Create(srcFormat, dstFormat, out ce);
Debug.Assert(ce == AudioConverterError.None);
converter.InputData += EncoderDataProc;
// if the source has a cookie, get it and set it on the Audio Converter
ReadCookie(sourceFile, converter);
// get the actual formats back from the Audio Converter
srcFormat = converter.CurrentInputStreamDescription;
dstFormat = converter.CurrentOutputStreamDescription;
// if encoding to AAC set the bitrate to 192k which is a nice value for this demo
// kAudioConverterEncodeBitRate is a UInt32 value containing the number of bits per second to aim for when encoding data
if (dstFormat.Format == AudioFormatType.MPEG4AAC)
{
uint outputBitRate = 192000; // 192k
// ignore errors as setting may be invalid depending on format specifics such as samplerate
try
{
converter.EncodeBitRate = outputBitRate;
}
catch
{
}
// get it back and print it out
outputBitRate = converter.EncodeBitRate;
Debug.Print("AAC Encode Bitrate: {0}", outputBitRate);
}
// can the Audio Converter resume conversion after an interruption?
// this property may be queried at any time after construction of the Audio Converter after setting its output format
// there's no clear reason to prefer construction time, interruption time, or potential resumption time but we prefer
// construction time since it means less code to execute during or after interruption time
bool canResumeFromInterruption;
try
{
canResumeFromInterruption = converter.CanResumeFromInterruption;
Debug.Print("Audio Converter {0} continue after interruption!", canResumeFromInterruption ? "CAN" : "CANNOT");
}
catch (Exception e)
{
// if the property is unimplemented (kAudioConverterErr_PropertyNotSupported, or paramErr returned in the case of PCM),
// then the codec being used is not a hardware codec so we're not concerned about codec state
// we are always going to be able to resume conversion after an interruption
canResumeFromInterruption = false;
Debug.Print("CanResumeFromInterruption: {0}", e.Message);
}
// create the destination file
var destinationFile = AudioFile.Create(destinationURL, AudioFileType.CAF, dstFormat, AudioFileFlags.EraseFlags);
// set up source buffers and data proc info struct
afio = new AudioFileIO(32 * 1024); // 32Kb
afio.SourceFile = sourceFile;
afio.SrcFormat = srcFormat;
if (srcFormat.BytesPerPacket == 0)
{
// if the source format is VBR, we need to get the maximum packet size
// use kAudioFilePropertyPacketSizeUpperBound which returns the theoretical maximum packet size
// in the file (without actually scanning the whole file to find the largest packet,
// as may happen with kAudioFilePropertyMaximumPacketSize)
afio.SrcSizePerPacket = sourceFile.PacketSizeUpperBound;
// how many packets can we read for our buffer size?
afio.NumPacketsPerRead = afio.SrcBufferSize / afio.SrcSizePerPacket;
// allocate memory for the PacketDescription structures describing the layout of each packet
afio.PacketDescriptions = new AudioStreamPacketDescription [afio.NumPacketsPerRead];
}
else
{
// CBR source format
afio.SrcSizePerPacket = srcFormat.BytesPerPacket;
afio.NumPacketsPerRead = afio.SrcBufferSize / afio.SrcSizePerPacket;
}
// set up output buffers
int outputSizePerPacket = dstFormat.BytesPerPacket; // this will be non-zero if the format is CBR
const int theOutputBufSize = 32 * 1024; // 32Kb
var outputBuffer = Marshal.AllocHGlobal(theOutputBufSize);
AudioStreamPacketDescription[] outputPacketDescriptions = null;
if (outputSizePerPacket == 0)
{
// if the destination format is VBR, we need to get max size per packet from the converter
outputSizePerPacket = (int)converter.MaximumOutputPacketSize;
// allocate memory for the PacketDescription structures describing the layout of each packet
outputPacketDescriptions = new AudioStreamPacketDescription [theOutputBufSize / outputSizePerPacket];
}
int numOutputPackets = theOutputBufSize / outputSizePerPacket;
// if the destination format has a cookie, get it and set it on the output file
WriteCookie(converter, destinationFile);
// write destination channel layout
if (srcFormat.ChannelsPerFrame > 2)
{
WriteDestinationChannelLayout(converter, sourceFile, destinationFile);
}
long totalOutputFrames = 0; // used for debugging
long outputFilePos = 0;
AudioBuffers fillBufList = new AudioBuffers(1);
bool error = false;
// loop to convert data
Debug.WriteLine("Converting...");
while (true)
{
// set up output buffer list
fillBufList[0] = new AudioBuffer()
{
NumberChannels = dstFormat.ChannelsPerFrame,
DataByteSize = theOutputBufSize,
Data = outputBuffer
};
// this will block if we're interrupted
var wasInterrupted = AppDelegate.ThreadStatePausedCheck();
if (wasInterrupted && !canResumeFromInterruption)
{
// this is our interruption termination condition
// an interruption has occured but the Audio Converter cannot continue
Debug.WriteLine("Cannot resume from interruption");
error = true;
break;
}
// convert data
int ioOutputDataPackets = numOutputPackets;
var fe = converter.FillComplexBuffer(ref ioOutputDataPackets, fillBufList, outputPacketDescriptions);
// if interrupted in the process of the conversion call, we must handle the error appropriately
if (fe != AudioConverterError.None)
{
Debug.Print("FillComplexBuffer: {0}", fe);
error = true;
break;
}
if (ioOutputDataPackets == 0)
{
// this is the EOF conditon
break;
}
// write to output file
var inNumBytes = fillBufList[0].DataByteSize;
var we = destinationFile.WritePackets(false, inNumBytes, outputPacketDescriptions, outputFilePos, ref ioOutputDataPackets, outputBuffer);
if (we != 0)
{
Debug.Print("WritePackets: {0}", we);
error = true;
break;
}
// advance output file packet position
outputFilePos += ioOutputDataPackets;
if (dstFormat.FramesPerPacket != 0)
{
// the format has constant frames per packet
totalOutputFrames += (ioOutputDataPackets * dstFormat.FramesPerPacket);
}
else
{
// variable frames per packet require doing this for each packet (adding up the number of sample frames of data in each packet)
for (var i = 0; i < ioOutputDataPackets; ++i)
{
totalOutputFrames += outputPacketDescriptions[i].VariableFramesInPacket;
}
}
}
Marshal.FreeHGlobal(outputBuffer);
if (!error)
{
// write out any of the leading and trailing frames for compressed formats only
if (dstFormat.BitsPerChannel == 0)
{
// our output frame count should jive with
Debug.Print("Total number of output frames counted: {0}", totalOutputFrames);
WritePacketTableInfo(converter, destinationFile);
}
// write the cookie again - sometimes codecs will update cookies at the end of a conversion
WriteCookie(converter, destinationFile);
}
converter.Dispose();
destinationFile.Dispose();
sourceFile.Dispose();
// transition thread state to State.Done before continuing
AppDelegate.ThreadStateSetDone();
return(!error);
}
