public SubSeekableAudioStream(ISeekableAudioStream parent, Timestamp start, Timestamp end, bool disposeAfterUse = true)
{
_parent = parent;
_disposeAfterUse = disposeAfterUse;
_start = AudioStreamHelper.ConvertTimeToStreamPos(start, Rate, IsStereo);
_pos = new Timestamp(0, Rate * (IsStereo ? 2 : 1));
_length = AudioStreamHelper.ConvertTimeToStreamPos(end, Rate, IsStereo) - _start;
Debug.Assert(_length.TotalNumberOfFrames % (IsStereo ? 2 : 1) == 0);
_parent.Seek(_start);
}
public SubSeekableAudioStream(ISeekableAudioStream parent, Timestamp start, Timestamp end, bool disposeAfterUse = true)
{
_parent = parent;
_disposeAfterUse = disposeAfterUse;
_start = AudioStreamHelper.ConvertTimeToStreamPos(start, Rate, IsStereo);
_pos = new Timestamp(0, Rate * (IsStereo ? 2 : 1));
_length = AudioStreamHelper.ConvertTimeToStreamPos(end, Rate, IsStereo) - _start;
Debug.Assert(_length.TotalNumberOfFrames % (IsStereo ? 2 : 1) == 0);
_parent.Seek(_start);
}
public void Play(int track, int numLoops, int startFrame, int duration, bool only_emulate)
{
if (numLoops != 0 || startFrame != 0)
{
_cd.track = track;
_cd.numLoops = numLoops;
_cd.start = startFrame;
_cd.duration = duration;
// Try to load the track from a compressed data file, and if found, use
// that. If not found, attempt to start regular Audio CD playback of
// the requested track.
string[] trackName = new string[2];
trackName[0] = string.Format("track{0}", track);
trackName[1] = string.Format("track{0:00}", track);
ISeekableAudioStream stream = null;
var directory = ServiceLocator.FileStorage.GetDirectoryName(_vm.Game.Path);
for (int i = 0; stream == null && i < 2; ++i)
{
var path = ScummHelper.LocatePath(directory, trackName[i]);
if (path != null)
{
// TODO: open stream
}
}
// Stop any currently playing emulated track
_mixer.StopHandle(_handle);
if (stream != null)
{
var start = new Timestamp(0, startFrame, 75);
var end = duration != 0 ? new Timestamp(0, startFrame + duration, 75) : stream.Length;
/*
* FIXME: Seems numLoops == 0 and numLoops == 1 both indicate a single repetition,
* while all other positive numbers indicate precisely the number of desired
* repetitions. Finally, -1 means infinitely many
*/
_emulating = true;
_handle = _mixer.PlayStream(SoundType.Music, LoopingAudioStream.Create(stream, start, end, (numLoops < 1) ? numLoops + 1 : numLoops), -1, _cd.volume, _cd.balance);
}
else
{
_emulating = false;
if (!only_emulate)
{
PlayCD(track, numLoops, startFrame, duration);
}
}
}
}
public SubLoopingAudioStream(ISeekableAudioStream stream, uint loops,
Timestamp loopStart,
Timestamp loopEnd,
bool disposeAfterUse = true)
{
_parent = stream;
_loops = loops;
_pos = new Timestamp(0, Rate * (IsStereo ? 2 : 1));
_loopStart = AudioStreamHelper.ConvertTimeToStreamPos(loopStart, Rate, IsStereo);
_loopEnd = AudioStreamHelper.ConvertTimeToStreamPos(loopEnd, Rate, IsStereo);
_done = false;
Debug.Assert(loopStart < loopEnd);
if (!_parent.Rewind())
_done = true;
}
public SubLoopingAudioStream(ISeekableAudioStream stream, uint loops,
Timestamp loopStart,
Timestamp loopEnd,
bool disposeAfterUse = true)
{
_parent = stream;
_loops = loops;
_pos = new Timestamp(0, Rate * (IsStereo ? 2 : 1));
_loopStart = AudioStreamHelper.ConvertTimeToStreamPos(loopStart, Rate, IsStereo);
_loopEnd = AudioStreamHelper.ConvertTimeToStreamPos(loopEnd, Rate, IsStereo);
_done = false;
Debug.Assert(loopStart < loopEnd);
if (!_parent.Rewind())
{
_done = true;
}
}
public static LoopingAudioStream Create(ISeekableAudioStream stream, Timestamp start, Timestamp end, int loops)
{
if (start.TotalNumberOfFrames == 0 && (end.TotalNumberOfFrames == 0 || end == stream.Length))
{
return(new LoopingAudioStream(stream, loops));
}
else
{
if (end.TotalNumberOfFrames == 0)
{
end = stream.Length;
}
if (start >= end)
{
Debug.WriteLine("makeLoopingAudioStream: start ({0}) >= end ({1})", start.Milliseconds, end.Milliseconds);
stream.Dispose();
return(null);
}
return(new LoopingAudioStream(new SubSeekableAudioStream(stream, start, end), loops));
}
}
public static bool Seek(this ISeekableAudioStream stream, int where)
{
return(stream.Seek(new Timestamp(where, stream.Rate)));
}
