private void InitAudioStream()
{
// The number of buffers to queue into the source.
const int NUM_BUFFERS = 4;
// Generate the source.
IntPtr audioPtr = IntPtr.Zero;
do
{
audioPtr = TheoraPlay.THEORAPLAY_getAudio(Video.theoraDecoder);
} while (audioPtr == IntPtr.Zero);
TheoraPlay.THEORAPLAY_AudioPacket packet = TheoraPlay.getAudioPacket(audioPtr);
audioStream = new DynamicSoundEffectInstance(
packet.freq,
(AudioChannels)packet.channels
);
audioStream.BufferNeeded += OnBufferRequest;
UpdateVolume();
// Fill and queue the buffers.
for (int i = 0; i < NUM_BUFFERS; i += 1)
{
if (!StreamAudio())
{
break;
}
}
}
private bool StreamAudio(int buffer)
{
// The size of our abstracted buffer.
const int BUFFER_SIZE = 4096 * 2;
// Store our abstracted buffer into here.
List <float> data = new List <float>();
// Be sure we have an audio stream first!
if (Video.audioStream == IntPtr.Zero)
{
return(false); // NOPE
}
// Add to the buffer from the decoder until it's large enough.
while (data.Count < BUFFER_SIZE && State != MediaState.Stopped)
{
data.AddRange(
TheoraPlay.getSamples(
currentAudio.samples,
currentAudio.frames * currentAudio.channels
)
);
// We've copied the audio, so free this.
TheoraPlay.THEORAPLAY_freeAudio(Video.audioStream);
do
{
Video.audioStream = TheoraPlay.THEORAPLAY_getAudio(Video.theoraDecoder);
if (State == MediaState.Stopped)
{
// Screw it, just bail out ASAP.
return(false);
}
} while (Video.audioStream == IntPtr.Zero);
currentAudio = TheoraPlay.getAudioPacket(Video.audioStream);
if ((BUFFER_SIZE - data.Count) < 4096)
{
break;
}
}
// If we actually got data, buffer it into OpenAL.
if (data.Count > 0)
{
AL.BufferData(
buffer,
(currentAudio.channels == 2) ? ALFormat.StereoFloat32Ext : ALFormat.MonoFloat32Ext,
data.ToArray(),
data.Count * 2 * currentAudio.channels, // Dear OpenAL: WTF?! Love, flibit
currentAudio.freq
);
return(true);
}
return(false);
}
private void InitializeTheoraStream()
{
// Start the video if it hasn't been yet.
if (Video.IsDisposed)
{
Video.Initialize();
}
// Grab the first bit of audio. We're trying to start the decoding ASAP.
if (TheoraPlay.THEORAPLAY_hasAudioStream(Video.theoraDecoder) != 0)
{
// Generate the source.
IntPtr audioPtr = IntPtr.Zero;
do
{
// The decoder miiight not be ready yet.
audioPtr = TheoraPlay.THEORAPLAY_getAudio(Video.theoraDecoder);
} while (audioPtr == IntPtr.Zero);
TheoraPlay.THEORAPLAY_AudioPacket packet = TheoraPlay.getAudioPacket(audioPtr);
audioStream = new DynamicSoundEffectInstance(
packet.freq,
(AudioChannels)packet.channels
);
audioStream.BufferNeeded += OnBufferRequest;
UpdateVolume();
// Fill and queue the buffers.
for (int i = 0; i < 4; i += 1)
{
if (!StreamAudio())
{
break;
}
}
}
// Grab the first bit of video.
if (TheoraPlay.THEORAPLAY_hasVideoStream(Video.theoraDecoder) != 0)
{
currentVideo = TheoraPlay.getVideoFrame(Video.videoStream);
previousFrame = Video.videoStream;
do
{
// The decoder miiight not be ready yet.
Video.videoStream = TheoraPlay.THEORAPLAY_getVideo(Video.theoraDecoder);
} while (Video.videoStream == IntPtr.Zero);
nextVideo = TheoraPlay.getVideoFrame(Video.videoStream);
}
}
private void RunVideo()
{
// FIXME: Maybe use an actual thread synchronization technique.
while (!audioStarted && State != MediaState.Stopped)
{
;
}
while (State != MediaState.Stopped)
{
// Someone needs to look at their memory management...
if (Game.Instance == null)
{
System.Console.WriteLine("Game exited before video player! Halting...");
State = MediaState.Stopped;
}
// Sleep when paused, update the video state when playing.
if (State == MediaState.Paused)
{
// Pause the OpenAL source.
if (AL.GetSourceState(audioSourceIndex) == ALSourceState.Playing)
{
AL.SourcePause(audioSourceIndex);
}
// Stop the timer in here so we know when we really stopped.
if (timer.IsRunning)
{
timer.Stop();
}
// Arbitrarily 1 frame in a 30fps movie.
Thread.Sleep(33);
}
else
{
// Start the timer, whether we're starting or unpausing.
if (!timer.IsRunning)
{
timer.Start();
}
// If we're getting here, we should be playing the audio...
if (TheoraPlay.THEORAPLAY_hasAudioStream(Video.theoraDecoder) != 0)
{
if (AL.GetSourceState(audioSourceIndex) != ALSourceState.Playing)
{
AL.SourcePlay(audioSourceIndex);
}
}
// Get the next video from from the decoder, if a stream exists.
if (TheoraPlay.THEORAPLAY_hasVideoStream(Video.theoraDecoder) != 0)
{
// Only step when it's time to do so.
if (nextVideo.playms <= timer.ElapsedMilliseconds)
{
// Wait until GetTexture() is done.
// FIXME: Maybe use an actual thread synchronization technique.
while (frameLocked)
{
;
}
// Assign the new currentVideo, free the old one.
currentVideo = nextVideo;
// Get the next frame ready, free the old one.
IntPtr oldestFrame = previousFrame;
previousFrame = Video.videoStream;
Video.videoStream = TheoraPlay.THEORAPLAY_getVideo(Video.theoraDecoder);
if (Video.videoStream != IntPtr.Zero)
{
// Assign next frame, if it exists.
nextVideo = TheoraPlay.getVideoFrame(Video.videoStream);
// Then free the _really_ old frame.
TheoraPlay.THEORAPLAY_freeVideo(oldestFrame);
}
}
}
// If we're done decoding, we hit the end.
if (TheoraPlay.THEORAPLAY_isDecoding(Video.theoraDecoder) == 0)
{
// FIXME: This is a part of the Duration hack!
Video.Duration = new TimeSpan(0, 0, 0, 0, (int)currentVideo.playms);
// Stop and reset the timer.
// If we're looping, the loop will start it again.
timer.Stop();
timer.Reset();
// If looping, go back to the start. Otherwise, we'll be exiting.
if (IsLooped && State == MediaState.Playing)
{
// Wait for the audio thread to end.
State = MediaState.Stopped;
audioDecoderThread.Join();
// Now we pretend we're playing again.
State = MediaState.Playing;
// Free everything and start over.
TheoraPlay.THEORAPLAY_freeVideo(previousFrame);
previousFrame = IntPtr.Zero;
Video.Dispose();
Video.Initialize();
// Grab the initial audio again.
if (TheoraPlay.THEORAPLAY_hasAudioStream(Video.theoraDecoder) != 0)
{
currentAudio = TheoraPlay.getAudioPacket(Video.audioStream);
audioDecoderThread = new Thread(new ThreadStart(DecodeAudio));
audioDecoderThread.Start();
}
else
{
audioStarted = true; // Welp.
}
// Grab the initial video again.
if (TheoraPlay.THEORAPLAY_hasVideoStream(Video.theoraDecoder) != 0)
{
currentVideo = TheoraPlay.getVideoFrame(Video.videoStream);
previousFrame = Video.videoStream;
do
{
// The decoder miiight not be ready yet.
Video.videoStream = TheoraPlay.THEORAPLAY_getVideo(Video.theoraDecoder);
} while (Video.videoStream == IntPtr.Zero);
nextVideo = TheoraPlay.getVideoFrame(Video.videoStream);
}
// FIXME: Maybe use an actual thread synchronization technique.
while (!audioStarted && State != MediaState.Stopped)
{
;
}
}
else
{
State = MediaState.Stopped;
}
}
}
}
// Reset the video timer.
timer.Stop();
timer.Reset();
// Stop the decoding, we don't need it anymore.
audioDecoderThread.Join();
// We're desperately trying to keep this until the very end.
TheoraPlay.THEORAPLAY_freeVideo(previousFrame);
// We're not playing any video anymore.
Video.Dispose();
}
public void Play(Video video)
{
checkDisposed();
// We need to assign this regardless of what happens next.
Video = video;
// FIXME: This is a part of the Duration hack!
Video.Duration = TimeSpan.MaxValue;
// Check the player state before attempting anything.
if (State != MediaState.Stopped)
{
return;
}
// In rare cases, the thread might still be going. Wait until it's done.
if (playerThread != null && playerThread.IsAlive)
{
Stop();
}
// Create new Thread instances in case we use this player multiple times.
playerThread = new Thread(new ThreadStart(this.RunVideo));
audioDecoderThread = new Thread(new ThreadStart(this.DecodeAudio));
// Update the player state now, for the thread we're about to make.
State = MediaState.Playing;
// Start the video if it hasn't been yet.
if (Video.IsDisposed)
{
video.Initialize();
}
// Grab the first bit of audio. We're trying to start the decoding ASAP.
if (TheoraPlay.THEORAPLAY_hasAudioStream(Video.theoraDecoder) != 0)
{
currentAudio = TheoraPlay.getAudioPacket(Video.audioStream);
audioDecoderThread.Start();
}
else
{
audioStarted = true; // Welp.
}
// Grab the first bit of video, set up the texture.
if (TheoraPlay.THEORAPLAY_hasVideoStream(Video.theoraDecoder) != 0)
{
currentVideo = TheoraPlay.getVideoFrame(Video.videoStream);
previousFrame = Video.videoStream;
do
{
// The decoder miiight not be ready yet.
Video.videoStream = TheoraPlay.THEORAPLAY_getVideo(Video.theoraDecoder);
} while (Video.videoStream == IntPtr.Zero);
nextVideo = TheoraPlay.getVideoFrame(Video.videoStream);
Texture2D overlap = videoTexture;
videoTexture = new Texture2D(
Game.Instance.GraphicsDevice,
(int)currentVideo.width,
(int)currentVideo.height,
false,
SurfaceFormat.Color
);
overlap.Dispose();
#if VIDEOPLAYER_OPENGL
GL_setupTargets(
(int)currentVideo.width,
(int)currentVideo.height
);
#endif
}
// Initialize the thread!
System.Console.Write("Starting Theora player...");
playerThread.Start();
System.Console.Write(" Waiting for initialization...");
while (!playerThread.IsAlive)
{
;
}
System.Console.WriteLine(" Done!");
}
