static AudioChannelLayout GetChannelLayout(AudioFormatProperty property, int value)
{
int size;
AudioFormatPropertyNative.AudioFormatGetPropertyInfo(property, sizeof(AudioFormatProperty), ref value, out size);
AudioChannelLayout layout;
IntPtr ptr = Marshal.AllocHGlobal(size);
if (AudioFormatPropertyNative.AudioFormatGetProperty(property, sizeof(AudioFormatProperty), ref value, ref size, ptr) == 0)
{
layout = new AudioChannelLayout(ptr);
}
else
{
layout = null;
}
Marshal.FreeHGlobal(ptr);
return(layout);
}
public unsafe static float[,] GetMatrixMixMap(AudioChannelLayout inputLayout, AudioChannelLayout outputLayout)
{
if (inputLayout == null)
{
throw new ArgumentNullException("inputLayout");
}
if (outputLayout == null)
{
throw new ArgumentNullException("outputLayout");
}
var channels_count_output = GetNumberOfChannels(outputLayout);
if (channels_count_output == null)
{
throw new ArgumentException("outputLayout");
}
var channels_count_input = GetNumberOfChannels(inputLayout);
if (channels_count_input == null)
{
throw new ArgumentException("inputLayout");
}
int ptr_size;
var input_ptr = inputLayout.ToBlock(out ptr_size);
var output_ptr = outputLayout.ToBlock(out ptr_size);
var array = new IntPtr[] { input_ptr, output_ptr };
ptr_size = sizeof(IntPtr) * array.Length;
float[,] value;
AudioFormatError res;
fixed(IntPtr *ptr = &array[0])
{
value = new float[channels_count_input.Value, channels_count_output.Value];
var size = sizeof(float) * channels_count_input.Value * channels_count_output.Value;
fixed(float *value_ptr = &value[0, 0])
{
res = AudioFormatPropertyNative.AudioFormatGetProperty(AudioFormatProperty.MatrixMixMap, ptr_size, ptr, ref size, value_ptr);
}
}
Marshal.FreeHGlobal(input_ptr);
Marshal.FreeHGlobal(output_ptr);
return(res == 0 ? value : null);
}
public static unsafe float[,] GetMatrixMixMap(AudioChannelLayout inputLayout, AudioChannelLayout outputLayout)
{
if (inputLayout == null)
throw new ArgumentNullException ("inputLayout");
if (outputLayout == null)
throw new ArgumentNullException ("outputLayout");
var channels_count_output = GetNumberOfChannels (outputLayout);
if (channels_count_output == null)
throw new ArgumentException ("outputLayout");
var channels_count_input = GetNumberOfChannels (inputLayout);
if (channels_count_input == null)
throw new ArgumentException ("inputLayout");
int ptr_size;
var input_ptr = inputLayout.ToBlock (out ptr_size);
var output_ptr = outputLayout.ToBlock (out ptr_size);
var array = new IntPtr[] { input_ptr, output_ptr };
ptr_size = sizeof (IntPtr) * array.Length;
float[,] value;
AudioFormatError res;
fixed (IntPtr* ptr = &array[0]) {
value = new float[channels_count_input.Value, channels_count_output.Value];
var size = sizeof (float) * channels_count_input.Value * channels_count_output.Value;
fixed (float* value_ptr = &value[0, 0]) {
res = AudioFormatPropertyNative.AudioFormatGetProperty (AudioFormatProperty.MatrixMixMap, ptr_size, ptr, ref size, value_ptr);
}
}
Marshal.FreeHGlobal (input_ptr);
Marshal.FreeHGlobal (output_ptr);
return res == 0 ? value : null;
}
static AudioChannelLayout GetChannelLayout(AudioFormatProperty property, int value)
{
int size;
AudioFormatPropertyNative.AudioFormatGetPropertyInfo (property, sizeof (AudioFormatProperty), ref value, out size);
AudioChannelLayout layout;
IntPtr ptr = Marshal.AllocHGlobal (size);
if (AudioFormatPropertyNative.AudioFormatGetProperty (property, sizeof (AudioFormatProperty), ref value, ref size, ptr) == 0)
layout = new AudioChannelLayout (ptr);
else
layout = null;
Marshal.FreeHGlobal (ptr);
return layout;
}
public static AudioFormatError Validate(AudioChannelLayout layout)
{
if (layout == null)
throw new ArgumentNullException ("layout");
int ptr_size;
var ptr = layout.ToBlock (out ptr_size);
var res = AudioFormatPropertyNative.AudioFormatGetProperty (AudioFormatProperty.ValidateChannelLayout, ptr_size, ptr, IntPtr.Zero, IntPtr.Zero);
Marshal.FreeHGlobal (ptr);
return res;
}
public static AudioChannelLayoutTag? GetTagForChannelLayout(AudioChannelLayout layout)
{
if (layout == null)
throw new ArgumentNullException ("layout");
int ptr_size;
var ptr = layout.ToBlock (out ptr_size);
int size = sizeof (AudioChannelLayoutTag);
int value;
var res = AudioFormatPropertyNative.AudioFormatGetProperty (AudioFormatProperty.TagForChannelLayout, ptr_size, ptr, ref size, out value);
Marshal.FreeHGlobal (ptr);
return res != 0 ? null : (AudioChannelLayoutTag?) value;
}
static IntPtr CreateLayoutPtr(AudioChannelLayout layout)
{
int size;
handleToLayout = layout.ToBlock (out size);
return handleToLayout;
}
public AVAudioChannelLayout(AudioChannelLayout layout)
: this((nint) CreateLayoutPtr (layout))
{
Marshal.FreeHGlobal (handleToLayout);
}
public AudioPanningInfo(AudioChannelLayout outputChannelMap)
{
if (outputChannelMap == null)
throw new ArgumentNullException ("outputChannelMap");
this.OutputChannelMap = outputChannelMap;
}
public AudioBalanceFade(AudioChannelLayout channelLayout)
{
if (channelLayout == null)
throw new ArgumentNullException ("channelLayout");
this.ChannelLayout = channelLayout;
}