// Filename: movieAudioCursor.h
// Created by: jyelon (02Jul07)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license.  You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
//
// To contact the maintainers of this program write to
// panda3d-general@lists.sourceforge.net .
//
////////////////////////////////////////////////////////////////////

#ifndef MOVIEAUDIOCURSOR_H
#define MOVIEAUDIOCURSOR_H

#include "pandabase.h"
#include "namable.h"
#include "texture.h"
#include "pointerTo.h"
class MovieAudio;

////////////////////////////////////////////////////////////////////
//       Class : MovieAudioCursor
// Description : A MovieAudio is actually any source that provides
//               a sequence of audio samples.  That could include an
//               AVI file, a microphone, or an internet TV station.
//               A MovieAudioCursor is a handle that lets you read
//               data sequentially from a MovieAudio.
//
//               Thread safety: each individual MovieAudioCursor
//               must be owned and accessed by a single thread.
//               It is OK for two different threads to open
//               the same file at the same time, as long as they
//               use separate MovieAudioCursor objects.
////////////////////////////////////////////////////////////////////
class EXPCL_PANDA_MOVIES MovieAudioCursor : public TypedWritableReferenceCount {

PUBLISHED:
  MovieAudioCursor(MovieAudio *src);
  virtual ~MovieAudioCursor();
  INLINE PT(MovieAudio) get_source() const;
  INLINE int audio_rate() const;
  INLINE int audio_channels() const;
  INLINE double length() const;
  INLINE bool can_seek() const;
  INLINE bool can_seek_fast() const;
  INLINE bool aborted() const;
  INLINE double tell() const;
  INLINE void skip_samples(int n);
  virtual void seek(double offset);

public:
  virtual void read_samples(int n, PN_int16 *data);
  
protected:
  PT(MovieAudio) _source;
  int _audio_rate;
  int _audio_channels;
  double _length;
  bool _can_seek;
  bool _can_seek_fast;
  bool _aborted;
  double _last_seek;
  PN_int64 _samples_read;
  
public:
  static TypeHandle get_class_type() {
    return _type_handle;
  }
  static void init_type() {
    TypedWritableReferenceCount::init_type();
    register_type(_type_handle, "MovieAudioCursor",
                  TypedWritableReferenceCount::get_class_type());
  }
  virtual TypeHandle get_type() const {
    return get_class_type();
  }
  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}

private:
  static TypeHandle _type_handle;
};

#include "movieAudioCursor.I"
#include "movieAudio.h"

#endif
