internal static bool Skip(SpeechSession session, int desyncMilliseconds, out int deltaSamples, out int deltaDesyncMilliseconds)
{
//We're too far behind where we ought to be to resync with speed adjustment. Skip ahead to where we should be.
if (desyncMilliseconds > ResetDesync.TotalMilliseconds)
{
Log.Warn("Playback desync ({0}ms) beyond recoverable threshold; resetting stream to current time", desyncMilliseconds);
deltaSamples = desyncMilliseconds * session.OutputWaveFormat.SampleRate / 1000;
deltaDesyncMilliseconds = -desyncMilliseconds;
// skip through the session the required number of samples
// we allocate here, but we are already in an error case rather than normal operation
return(session.Read(new ArraySegment <float>(new float[deltaSamples])));
}
//We're too far ahead of where we ought to be to resync with speed adjustment. Insert silent frames to resync
if (desyncMilliseconds < -ResetDesync.TotalMilliseconds)
{
Log.Error("Playback desync ({0}ms) AHEAD beyond recoverable threshold", desyncMilliseconds);
}
deltaSamples = 0;
deltaDesyncMilliseconds = 0;
return(false);
}
internal static bool Filter(SpeechSession session, [NotNull] float[] output, int channels, [NotNull] float[] temp, [CanBeNull] AudioFileWriter diagnosticOutput, out float arv)
{
//Read out data from source (exactly as much as we need for one channel)
var samplesRequired = output.Length / channels;
var complete = session.Read(new ArraySegment <float>(temp, 0, samplesRequired));
//Write the audio we're about to play to the diagnostics writer (on disk)
if (diagnosticOutput != null)
{
diagnosticOutput.WriteSamples(new ArraySegment <float>(temp, 0, samplesRequired));
}
//Step through samples, stretching them (i.e. play mono input in all output channels)
float accumulator = 0;
var sampleIndex = 0;
for (var i = 0; i < output.Length; i += channels)
{
//Get a single sample from the source data
var sample = temp[sampleIndex++];
//Accumulate the sum of the audio signal
accumulator += Mathf.Abs(sample);
//Copy data into all channels
for (var c = 0; c < channels; c++)
{
output[i + c] *= sample;
}
}
arv = accumulator / output.Length;
return(complete);
}
internal static bool Filter(SpeechSession session, float[] data, int channels, float[] temp, [CanBeNull] AudioFileWriter diagnosticOutput, out float arv, out int samplesRead, bool multiply)
{
//Read out data from source (exactly as much as we need for one channel)
var samplesRequired = data.Length / channels;
var complete = session.Read(new ArraySegment <float>(temp, 0, samplesRequired));
if (diagnosticOutput != null)
{
diagnosticOutput.WriteSamples(new ArraySegment <float>(temp, 0, samplesRequired));
}
float accumulator = 0;
//Step through samples, stretching them (i.e. play mono input in all output channels)
var sampleIndex = 0;
for (var i = 0; i < data.Length; i += channels)
{
//Get a single sample from the source data
var sample = temp[sampleIndex++];
//Accumulate the sum of the audio signal
accumulator += Mathf.Abs(sample);
//Copy data into all channels
for (var c = 0; c < channels; c++)
{
if (multiply)
{
data[i + c] *= sample;
}
else
{
data[i + c] = sample;
}
}
}
arv = accumulator / data.Length;
samplesRead = samplesRequired;
return(complete);
}
internal static bool Skip(SpeechSession session, int desyncMilliseconds, out int deltaSamples, out int deltaDesyncMilliseconds)
{
//If we're really far out of sync just skip forward the playback
if (desyncMilliseconds > ResetDesync.TotalMilliseconds)
{
Log.Warn("Playback desync ({0}ms) beyond recoverable threshold; resetting stream to current time", desyncMilliseconds);
deltaSamples = desyncMilliseconds * session.OutputWaveFormat.SampleRate / 1000;
deltaDesyncMilliseconds = -desyncMilliseconds;
// skip through the session the required number of samples
// we allocate here, but we are already in an error case rather than normal operation
return(session.Read(new ArraySegment <float>(new float[deltaSamples])));
}
deltaSamples = 0;
deltaDesyncMilliseconds = 0;
return(false);
}
internal static bool Skip(SpeechSession session, int desyncMilliseconds, out int deltaSamples, out int deltaDesyncMilliseconds)
{
//We're too far behind where we ought to be to resync with speed adjustment. Skip ahead to where we should be.
if (desyncMilliseconds > ResetDesync.TotalMilliseconds)
{
Log.Warn("Playback desync ({0}ms) beyond recoverable threshold; resetting stream to current time", desyncMilliseconds);
deltaSamples = desyncMilliseconds * session.OutputWaveFormat.SampleRate / 1000;
deltaDesyncMilliseconds = -desyncMilliseconds;
//Read out a load of data and discard it, forcing ourselves back into sync
//If reading completes the session exit out.
var toRead = deltaSamples;
while (toRead > 0)
{
var count = Math.Min(toRead, DesyncFixBuffer.Length);
if (session.Read(new ArraySegment <float>(DesyncFixBuffer, 0, count)))
{
return(true);
}
toRead -= count;
}
//We completed all the reads so obviously none of the reads finished the session
return(false);
}
//We're too far ahead of where we ought to be to resync with speed adjustment. Insert silent frames to resync
if (desyncMilliseconds < -ResetDesync.TotalMilliseconds)
{
Log.Error("Playback desync ({0}ms) AHEAD beyond recoverable threshold", desyncMilliseconds);
}
deltaSamples = 0;
deltaDesyncMilliseconds = 0;
return(false);
}