public AudioFormatInfo(
SampleFormat sampleFormat,
int sampleRate,
ChannelLayout channelLayout)
: this(sampleFormat, sampleRate, ChannelLayoutHelper.GetChannelCount(channelLayout), channelLayout)
{
}
public AudioFormatInfo(
SampleFormat sampleFormat,
int sampleRate,
int channelCount,
ChannelLayout channelLayout = default)
{
if (sampleFormat == SampleFormat.Unknown)
{
throw new ArgumentException("Must not be Unknown", nameof(sampleFormat));
}
if (sampleRate <= 0 || sampleRate > Constants.MaxSampleRate)
{
throw ExceptionHelper.OutOfRange(nameof(sampleRate), 1, Constants.MaxSampleRate, sampleRate);
}
if (channelCount <= 0 || channelCount > Constants.MaxChannelCount)
{
throw ExceptionHelper.OutOfRange(nameof(sampleRate), 1, Constants.MaxChannelCount, sampleRate);
}
SampleFormat = sampleFormat;
SampleRate = sampleRate;
ChannelCount = channelCount;
ChannelLayout = channelLayout;
}
/// <summary>
/// <see cref="swr_alloc_set_opts(SwrContext*, long, AVSampleFormat, int, long, AVSampleFormat, int, int, void*)"/>
/// </summary>
public void Reset(
ChannelLayout outputChannelLayout, SampleFormat outputSampleFormat, int outputSampleRate,
ChannelLayout inputChannelLayout, SampleFormat inputSampleFormat, int inputSampleRate)
{
_nativePointer = NativeUtils.NotNull((IntPtr)swr_alloc_set_opts(this,
(long)outputChannelLayout, (AVSampleFormat)outputSampleFormat, outputSampleRate,
(long)inputChannelLayout, (AVSampleFormat)inputSampleFormat, inputSampleRate,
log_offset: 0, log_ctx: null));
}
public override int GetHashCode()
{
var hashCode = 1182625657;
hashCode = hashCode * -1521134295 + Codec.GetHashCode();
hashCode = hashCode * -1521134295 + ChannelLayout.GetHashCode();
hashCode = hashCode * -1521134295 + SampleRate.GetHashCode();
hashCode = hashCode * -1521134295 + BitsPerChannel.GetHashCode();
hashCode = hashCode * -1521134295 + BitRate.GetHashCode();
return(hashCode);
}
// Set Layout
public void SetLayout(ChannelLayout cLayout)
{
try
{
vsLayout = cLayout;
GenerateLayout();
}
catch (Exception err)
{
logger.Log(LogLevel.Error, err.Message + " " + err.Source + " " + err.StackTrace);;
}
}
internal static int get_right_channel(ChannelLayout layout, int stream_id, int prev)
{
int i;
i = (prev < 0) ? 0 : prev + 1;
for (; i < layout.nb_channels; i++)
{
if (layout.mapping[i] == stream_id * 2 + 1)
{
return(i);
}
}
return(-1);
}
internal static int get_mono_channel(ChannelLayout layout, int stream_id, int prev)
{
int i;
i = (prev < 0) ? 0 : prev + 1;
for (; i < layout.nb_channels; i++)
{
if (layout.mapping[i] == stream_id + layout.nb_coupled_streams)
{
return(i);
}
}
return(-1);
}
public static Frame CreateWritableAudio(SampleFormat sampleFormat, ChannelLayout channelLayout, int sampleRate, int sampleCount)
{
var frame = new Frame
{
Format = (int)sampleFormat,
ChannelLayout = channelLayout,
SampleRate = sampleRate,
NbSamples = sampleCount,
};
frame.EnsureBuffer();
frame.MakeWritable();
return(frame);
}
internal static int validate_layout(ChannelLayout layout)
{
int i, max_channel;
max_channel = layout.nb_streams + layout.nb_coupled_streams;
if (max_channel > 255)
{
return(0);
}
for (i = 0; i < layout.nb_channels; i++)
{
if (layout.mapping[i] >= max_channel && layout.mapping[i] != 255)
{
return(0);
}
}
return(1);
}
public void WriteXml(System.Xml.XmlWriter writer)
{
writer.WriteStartElement("item", Properties.Resources.CasparPlayoutSchemaURL);
writer.WriteAttributeString("clipname", Clipname);
writer.WriteAttributeString("videoLayer", VideoLayer.ToString());
writer.WriteAttributeString("seek", Seek.ToString());
writer.WriteAttributeString("length", Length.ToString());
writer.WriteAttributeString("loop", Loop.ToString());
writer.WriteAttributeString("channel_layout", ChannelLayout.ToString());
writer.WriteStartElement("transition");
writer.WriteAttributeString("type", Transition.Type.ToString());
writer.WriteAttributeString("duration", Transition.Duration.ToString());
writer.WriteAttributeString("easing", Transition.Easing.ToString());
writer.WriteAttributeString("pause", Transition.Pause.ToString());
writer.WriteEndElement();
writer.WriteEndElement();
}
public static bool TryParse(string text, out ChannelLayout layout)
{
switch (text)
{
case "mono": layout = ChannelLayout.Mono; return(true);
case "stereo": layout = ChannelLayout.Stereo; return(true);
case "downmix": layout = ChannelLayout.StereoDownmix; return(true);
case "quad": layout = ChannelLayout.Quad; return(true);
case "2.1": layout = ChannelLayout._2_1; return(true);
case "2.2": layout = ChannelLayout._2_2; return(true);
case "3.0": layout = ChannelLayout._3_0; return(true);
case "3.1": layout = ChannelLayout._3_1; return(true);
case "4.1": layout = ChannelLayout._4_1; return(true);
case "4.0": layout = ChannelLayout._4_0; return(true);
case "5.0": layout = ChannelLayout._5_0; return(true);
case "5.1": layout = ChannelLayout._5_1; return(true);
case "6.0": layout = ChannelLayout._6_0; return(true);
case "6.1": layout = ChannelLayout._6_1; return(true);
case "7.0": layout = ChannelLayout._7_0; return(true);
case "7.1": layout = ChannelLayout._7_1; return(true);
case "octagonal": layout = ChannelLayout.Octagonal; return(true);
}
layout = default;
return(false);
}
public static int GetChannelCount(this ChannelLayout layout)
{
return(CountSetBits((ulong)layout));
}
// Set Layout
public void SetLayout(ChannelLayout cLayout)
{
try
{
vsLayout = cLayout;
GenerateLayout();
}
catch (Exception err)
{
logger.Log(LogLevel.Error, err.Message + " " + err.Source + " " + err.StackTrace);;
}
}
/// <summary> /// <see cref="av_opt_set_channel_layout(void*, string, long, int)"/> /// </summary> public void Set(string name, ChannelLayout value, OptionSearchFlags searchFlags = OptionSearchFlags.None) => av_opt_set_channel_layout(_obj, name, (long)value, (int)searchFlags).ThrowIfError();
/// <summary>
/// Set audio layout for the channel
/// </summary>
/// <param name="layout"></param>
/// <returns></returns>
public virtual bool SetChannelLayout(ChannelLayout layout)
{
return(_amcpTcpParser.SendCommand($"SET {ID} CHANNEL_LAYOUT {layout.ToAmcpValue()}"));
}
/// <summary>
/// Init with default values
/// </summary>
/// <param name="channelLayout">channel layout</param>
/// <param name="sampleRate">sample rate</param>
/// <param name="framesPerBuffer">frames per buffer</param>
public AudioParameters(ChannelLayout channelLayout, int sampleRate, int framesPerBuffer)
{
ChannelLayout = channelLayout;
SampleRate = sampleRate;
FramesPerBuffer = framesPerBuffer;
}
public void OnAudioStreamStarted(IWebBrowser chromiumWebBrowser, IBrowser browser, int audioStreamId, int channels, ChannelLayout channelLayout, int sampleRate, int framesPerBuffer)
{
Console.WriteLine("OnAudioStreamStarted");
}
public Mp3EncodingParameters(BitRate bitRate, ChannelLayout channelLayout = ChannelLayout.Stereo)
{
this.BitRate = bitRate;
this.ChannelLayout = channelLayout;
}
public static long GetAvChannelLayout(ChannelLayout channelLayout)
{
return(channelLayout == ChannelLayout.Mono
? ffmpeg.AV_CH_LAYOUT_MONO
: ffmpeg.AV_CH_LAYOUT_STEREO);
}
void IAudioHandler.OnAudioStreamStarted(IWebBrowser chromiumWebBrowser, IBrowser browser, int audioStreamId, int channels, ChannelLayout channelLayout, int sampleRate, int framesPerBuffer)
{
this.channelLayout = channelLayout;
this.channelCount = channels;
this.sampleRate = sampleRate;
}
public void EqualToFFmpeg(ChannelLayout channel, long value)
{
Assert.Equal(value, (long)channel);
}
protected override void OnAudioStreamStarted(IWebBrowser chromiumWebBrowser, IBrowser browser, AudioParameters parameters, int channels)
{
this.channelLayout = parameters.ChannelLayout;
this.sampleRate = parameters.SampleRate;
this.channelCount = channels;
}
public void EqualToMediaFoundation(ChannelLayout channel, long value)
{
Assert.Equal(value, (long)channel);
}