private long _soundRemainder; // audio timekeeping for video dumping
/// <exception cref="InvalidOperationException">
/// <paramref name="asyncSoundProvider"/>'s mode is not <see cref="SyncSoundMode.Async"/>, or
/// A/V parameters haven't been set (need to call <see cref="AVStretcher.SetAudioParameters"/> and <see cref="AVStretcher.SetMovieParameters"/>)
/// </exception>
public void DumpAV(IVideoProvider v, ISoundProvider asyncSoundProvider, out short[] samples, out int samplesProvided)
{
// Sound refactor TODO: we could try set it here, but we want the client to be responsible for mode switching? There may be non-trivial complications with when to switch modes that we don't want this object worrying about
if (asyncSoundProvider.SyncMode != SyncSoundMode.Async)
{
throw new InvalidOperationException("Only async mode is supported, set async mode before passing in the sound provider");
}
if (!ASet || !VSet)
{
throw new InvalidOperationException("Must set params first!");
}
long nSampNum = Samplerate * (long)FpsDen + _soundRemainder;
long nsamp = nSampNum / FpsNum;
// exactly remember fractional parts of an audio sample
_soundRemainder = nSampNum % FpsNum;
samples = new short[nsamp * Channels];
asyncSoundProvider.GetSamplesAsync(samples);
samplesProvided = (int)nsamp;
W.AddFrame(v);
W.AddSamples(samples);
}
public void GetSamplesAsync(short[] samples)
{
int samplesToGenerate = SamplesInOneFrame;
if (buffer.Count > samples.Length + MaxExcessSamples)
{
samplesToGenerate = 0;
}
if (buffer.Count - samples.Length < TargetExtraSamples)
{
samplesToGenerate += SamplesInOneFrame;
}
if (samplesToGenerate + buffer.Count < samples.Length)
{
samplesToGenerate = samples.Length - buffer.Count;
}
var mySamples = new short[samplesToGenerate];
if (BaseSoundProvider.SyncMode != SyncSoundMode.Async)
{
throw new InvalidOperationException("Base sound provider must be in async mode.");
}
BaseSoundProvider.GetSamplesAsync(mySamples);
foreach (short s in mySamples)
{
buffer.Enqueue(s);
}
for (int i = 0; i < samples.Length; i++)
{
samples[i] = buffer.Dequeue();
}
}
public void GetSamplesAsync(short[] samples)
{
_soundProvider.GetSamplesAsync(samples);
PushThroughSamples(samples, samples.Length);
}
