/// <summary>
/// Initializes a new instance of the <see cref="AudioOutputStream"/> class.
/// </summary>
/// <param name="stream">The audio stream.</param>
/// <param name="config">The stream setting.</param>
internal AudioOutputStream(OutputStream <AudioFrame> stream, AudioEncoderSettings config)
{
this.stream = stream;
long channelLayout = ffmpeg.av_get_default_channel_layout(config.Channels);
swrContext = ffmpeg.swr_alloc_set_opts(
null,
channelLayout,
(AVSampleFormat)config.SampleFormat,
config.SampleRate,
channelLayout,
(AVSampleFormat)SampleFormat.SingleP,
config.SampleRate,
0,
null);
ffmpeg.swr_init(swrContext);
Configuration = config;
frame = AudioFrame.Create(config.SampleRate, config.Channels, config.SamplesPerFrame, channelLayout, SampleFormat.SingleP);
}
/// <summary>
/// Adds a new audio stream to the file.
/// </summary>
/// <param name="settings">The video stream settings.</param>
/// <returns>This <see cref="MediaBuilder"/> object.</returns>
public MediaBuilder WithAudio(AudioEncoderSettings settings)
{
container.AddAudioStream(settings);
return(this);
}