public static OVRLipSyncSequence CreateSequenceFromAudioClip(
AudioClip clip, bool useOfflineModel = false)
{
OVRLipSyncSequence sequence = null;
if (clip.channels > 2)
{
Debug.LogError(clip.name +
": Cannot process phonemes from an audio clip with " +
"more than 2 channels");
return(null);
}
if (clip.loadType != AudioClipLoadType.DecompressOnLoad)
{
Debug.LogError(clip.name +
": Cannot process phonemes from an audio clip unless " +
"its load type is set to DecompressOnLoad.");
return(null);
}
if (OVRLipSync.Initialize(clip.frequency, sSampleSize) != OVRLipSync.Result.Success)
{
Debug.LogError("Could not create Lip Sync engine.");
return(null);
}
if (clip.loadState != AudioDataLoadState.Loaded)
{
Debug.LogError("Clip is not loaded!");
return(null);
}
uint context = 0;
OVRLipSync.Result result = useOfflineModel
? OVRLipSync.CreateContextWithModelFile(
ref context,
OVRLipSync.ContextProviders.Enhanced,
Path.Combine(Application.dataPath, "Oculus/LipSync/Assets/OfflineModel/ovrlipsync_offline_model.pb"))
: OVRLipSync.CreateContext(ref context, OVRLipSync.ContextProviders.Enhanced);
if (result != OVRLipSync.Result.Success)
{
Debug.LogError("Could not create Phoneme context. (" + result + ")");
OVRLipSync.Shutdown();
return(null);
}
List <OVRLipSync.Frame> frames = new List <OVRLipSync.Frame>();
float[] samples = new float[sSampleSize * clip.channels];
OVRLipSync.Frame dummyFrame = new OVRLipSync.Frame();
OVRLipSync.ProcessFrame(
context,
samples,
dummyFrame,
(clip.channels == 2) ? true : false
);
// frame delay in ms
float frameDelayInMs = dummyFrame.frameDelay;
int frameOffset = (int)(frameDelayInMs * clip.frequency / 1000);
int totalSamples = clip.samples;
for (int x = 0; x < totalSamples + frameOffset; x += sSampleSize)
{
int remainingSamples = totalSamples - x;
if (remainingSamples >= sSampleSize)
{
clip.GetData(samples, x);
}
else if (remainingSamples > 0)
{
float[] samples_clip = new float[remainingSamples * clip.channels];
clip.GetData(samples_clip, x);
Array.Copy(samples_clip, samples, samples_clip.Length);
Array.Clear(samples, samples_clip.Length, samples.Length - samples_clip.Length);
}
else
{
Array.Clear(samples, 0, samples.Length);
}
OVRLipSync.Frame frame = new OVRLipSync.Frame();
if (clip.channels == 2)
{
// interleaved = stereo data, alternating floats
OVRLipSync.ProcessFrame(context, samples, frame);
}
else
{
// mono
OVRLipSync.ProcessFrame(context, samples, frame, false);
}
if (x < frameOffset)
{
continue;
}
frames.Add(frame);
}
Debug.Log(clip.name + " produced " + frames.Count +
" viseme frames, playback rate is " + (frames.Count / clip.length) +
" fps");
OVRLipSync.DestroyContext(context);
OVRLipSync.Shutdown();
sequence = ScriptableObject.CreateInstance <OVRLipSyncSequence>();
sequence.entries = frames;
sequence.length = clip.length;
return(sequence);
}
public static OVRLipSyncSequence CreateSequenceFromAudioClip(AudioClip clip)
{
OVRLipSyncSequence sequence = null;
if (clip.channels > 2)
{
Debug.LogError(clip.name +
": Cannot process phonemes from an audio clip with " +
"more than 2 channels");
return(null);
}
if (clip.loadType != AudioClipLoadType.DecompressOnLoad)
{
Debug.LogError(clip.name +
": Cannot process phonemes from an audio clip unless " +
"its load type is set to DecompressOnLoad.");
return(null);
}
if (OVRLipSync.Initialize(clip.frequency, sSampleSize) != OVRLipSync.Result.Success)
{
Debug.LogError("Could not create Lip Sync engine.");
return(null);
}
if (clip.loadState != AudioDataLoadState.Loaded)
{
Debug.LogError("Clip is not loaded!");
return(null);
}
uint context = 0;
OVRLipSync.Result result =
OVRLipSync.CreateContext(ref context, OVRLipSync.ContextProviders.Enhanced);
if (result != OVRLipSync.Result.Success)
{
Debug.LogError("Could not create Phoneme context. (" + result + ")");
OVRLipSync.Shutdown();
return(null);
}
List <OVRLipSync.Frame> frames = new List <OVRLipSync.Frame>();
float[] samples = new float[sSampleSize * clip.channels];
int totalSamples = clip.samples;
for (int x = 0; x < totalSamples; x += sSampleSize)
{
// GetData loops at the end of the read. Prevent that when it happens.
if (x + samples.Length > totalSamples)
{
samples = new float[(totalSamples - x) * clip.channels];
}
clip.GetData(samples, x);
OVRLipSync.Frame frame = new OVRLipSync.Frame();
if (clip.channels == 2)
{
// interleaved = stereo data, alternating floats
OVRLipSync.ProcessFrame(context, samples, frame);
}
else
{
// mono
OVRLipSync.ProcessFrame(context, samples, frame, OVRLipSync.AudioDataType.F32_Mono);
}
frames.Add(frame);
}
Debug.Log(clip.name + " produced " + frames.Count +
" viseme frames, playback rate is " + (frames.Count / clip.length) +
" fps");
OVRLipSync.DestroyContext(context);
OVRLipSync.Shutdown();
sequence = ScriptableObject.CreateInstance <OVRLipSyncSequence>();
sequence.entries = frames;
sequence.length = clip.length;
return(sequence);
}
