public static ExtAudioFile OpenUrl(CFUrl url, out ExtAudioFileError error)
{
if (url == null)
{
throw new ArgumentNullException("url");
}
return(OpenUrl(url.Handle, out error));
}
public static ExtAudioFile?OpenUrl(CFUrl url, out ExtAudioFileError error)
{
if (url is null)
{
ObjCRuntime.ThrowHelper.ThrowArgumentNullException(nameof(url));
}
return(OpenUrl(url.Handle, out error));
}
public uint Read(uint numberFrames, AudioBuffers audioBufferList, out ExtAudioFileError status)
{
if (audioBufferList == null)
{
throw new ArgumentNullException("audioBufferList");
}
status = ExtAudioFileRead(_extAudioFile, ref numberFrames, (IntPtr)audioBufferList);
return(numberFrames);
}
public uint Read(uint numberFrames, AudioBuffers audioBufferList, out ExtAudioFileError status)
{
if (audioBufferList is null)
{
ObjCRuntime.ThrowHelper.ThrowArgumentNullException(nameof(audioBufferList));
}
status = ExtAudioFileRead(_extAudioFile, ref numberFrames, (IntPtr)audioBufferList);
return(numberFrames);
}
static ExtAudioFile OpenUrl(IntPtr urlHandle, out ExtAudioFileError error)
{
IntPtr ptr;
error = ExtAudioFileOpenUrl(urlHandle, out ptr);
if (error != ExtAudioFileError.OK || ptr == IntPtr.Zero)
{
return(null);
}
else
{
return(new ExtAudioFile(ptr));
}
}
static ExtAudioFile CreateWithUrl(IntPtr urlHandle, AudioFileType fileType, AudioStreamBasicDescription inStreamDesc, AudioFileFlags flag, out ExtAudioFileError error)
{
IntPtr ptr;
error = (ExtAudioFileError)ExtAudioFileCreateWithUrl(urlHandle, fileType, ref inStreamDesc, IntPtr.Zero, (uint)flag, out ptr);
if (error != ExtAudioFileError.OK || ptr == IntPtr.Zero)
{
return(null);
}
else
{
return(new ExtAudioFile(ptr));
}
}
public static ExtAudioFile CreateWithUrl(CFUrl url, AudioFileType fileType, AudioStreamBasicDescription inStreamDesc, AudioFileFlags flag, out ExtAudioFileError error)
{
if (url == null)
{
throw new ArgumentNullException("url");
}
return(CreateWithUrl(url.Handle, fileType, inStreamDesc, flag, out error));
}
public static bool GetDataFromExtAudioFile(ExtAudioFile ext, AudioStreamBasicDescription outputFormat, int maxBufferSize,
byte[] dataBuffer, out int dataBufferSize, out ALFormat format, out double sampleRate)
{
uint errorStatus = 0;
uint bufferSizeInFrames = 0;
dataBufferSize = 0;
format = ALFormat.Mono16;
sampleRate = 0;
/* Compute how many frames will fit into our max buffer size */
bufferSizeInFrames = (uint)(maxBufferSize / outputFormat.BytesPerFrame);
if (dataBuffer != null)
{
var audioBufferList = new AudioBuffers(maxBufferSize);
// This a hack so if there is a problem speak to kjpou1 -Kenneth
// the cleanest way is to copy the buffer to the pointer already allocated
// but what we are going to do is replace the pointer with our own and restore it later
//
GCHandle meBePinned = GCHandle.Alloc(dataBuffer, GCHandleType.Pinned);
IntPtr meBePointer = meBePinned.AddrOfPinnedObject();
audioBufferList.SetData(0, meBePointer);
try {
// Read the data into an AudioBufferList
// errorStatus here returns back the amount of information read
ExtAudioFileError extAudioFileError = ExtAudioFileError.OK;
errorStatus = ext.Read(bufferSizeInFrames, audioBufferList, out extAudioFileError);
if (errorStatus >= 0)
{
/* Success */
/* Note: 0 == bufferSizeInFrames is a legitimate value meaning we are EOF. */
/* ExtAudioFile.Read returns the number of frames actually read.
* Need to convert back to bytes.
*/
dataBufferSize = (int)bufferSizeInFrames * outputFormat.BytesPerFrame;
// Now we set our format
format = outputFormat.ChannelsPerFrame > 1 ? ALFormat.Stereo16 : ALFormat.Mono16;
sampleRate = outputFormat.SampleRate;
}
else
{
#if DEBUG
Console.WriteLine("ExtAudioFile.Read failed, Error = " + errorStatus);
#endif
return(false);
}
} catch (Exception exc) {
#if DEBUG
Console.WriteLine("ExtAudioFile.Read failed: " + exc.Message);
#endif
return(false);
} finally {
// Don't forget to free our dataBuffer memory pointer that was pinned above
meBePinned.Free();
// and restore what was allocated to beginwith
audioBufferList.SetData(0, IntPtr.Zero);
}
}
return(true);
}
public uint Read(uint numberFrames, AudioBuffers audioBufferList, out ExtAudioFileError status)
{
if (audioBufferList == null)
throw new ArgumentNullException ("audioBufferList");
status = ExtAudioFileRead (_extAudioFile, ref numberFrames, (IntPtr) audioBufferList);
return numberFrames;
}
public static ExtAudioFile?CreateWithUrl(CFUrl url, AudioFileType fileType, AudioStreamBasicDescription inStreamDesc, AudioFileFlags flag, out ExtAudioFileError error)
{
if (url is null)
{
ObjCRuntime.ThrowHelper.ThrowArgumentNullException(nameof(url));
}
return(CreateWithUrl(url.Handle, fileType, inStreamDesc, flag, out error));
}
static ExtAudioFile OpenUrl(IntPtr urlHandle, out ExtAudioFileError error)
{
IntPtr ptr;
error = ExtAudioFileOpenUrl (urlHandle, out ptr);
if (error != ExtAudioFileError.OK || ptr == IntPtr.Zero)
return null;
else
return new ExtAudioFile (ptr);
}
static ExtAudioFile CreateWithUrl(IntPtr urlHandle, AudioFileType fileType, AudioStreamBasicDescription inStreamDesc, AudioFileFlags flag, out ExtAudioFileError error)
{
IntPtr ptr;
error = (ExtAudioFileError) ExtAudioFileCreateWithUrl (urlHandle, fileType, ref inStreamDesc, IntPtr.Zero, (uint)flag, out ptr);
if (error != ExtAudioFileError.OK || ptr == IntPtr.Zero)
return null;
else
return new ExtAudioFile (ptr);
}
public static ExtAudioFile OpenUrl(CFUrl url, out ExtAudioFileError error)
{
if (url == null)
throw new ArgumentNullException ("url");
return OpenUrl (url.Handle, out error);
}
public static ExtAudioFile CreateWithUrl(CFUrl url, AudioFileType fileType, AudioStreamBasicDescription inStreamDesc, AudioFileFlags flag, out ExtAudioFileError error)
{
if (url == null)
throw new ArgumentNullException ("url");
return CreateWithUrl (url.Handle, fileType, inStreamDesc, flag, out error);
}
