src/apps/mediaplayer/media_node_framework/audio/AudioChannelConverter.h

   1 /*
   2  * Copyright 2008 Stephan Aßmus <superstippi@gmx.de>
   3  * All rights reserved. Distributed under the terms of the MIT licensce.
   4  */
   5 #ifndef AUDIO_CHANNEL_CONVERTER_H
   6 #define AUDIO_CHANNEL_CONVERTER_H
   7
   8
   9 /*! This AudioReader just converts the source channel count
  10         into another one, e.g. 1 -> 2. Frame rate and sample format
  11         remain unchanged.
  12 */
  13
  14
  15 #include "AudioReader.h"
  16
  17
  18 class AudioChannelConverter : public AudioReader {
  19 public:
  20                                                                 AudioChannelConverter(AudioReader* source,
  21                                                                         const media_format& format);
  22         virtual                                         ~AudioChannelConverter();
  23
  24         virtual bigtime_t                       InitialLatency() const;
  25         virtual status_t                        Read(void* buffer, int64 pos, int64 frames);
  26
  27         virtual status_t                        InitCheck() const;
  28
  29                         AudioReader*            Source() const;
  30
  31 protected:
  32                         AudioReader*            fSource;
  33 };
  34
  35 #endif  // AUDIO_CHANNEL_CONVERTER_H