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

   1 /*
   2  * Copyright 2000-2006 Ingo Weinhold <ingo_weinhold@gmx.de>
   3  * Copyright 2008 Stephan Aßmus <superstippi@gmx.de>
   4  * All rights reserved. Distributed under the terms of the MIT licensce.
   5  */
   6 #ifndef AUDIO_FORMAT_CONVERTER_H
   7 #define AUDIO_FORMAT_CONVERTER_H
   8
   9
  10 /*! This AudioReader just converts the source sample format (and byte order)
  11         into another one, e.g. LE short -> BE float. Frame rate and channel
  12         count remain unchanged.
  13 */
  14
  15
  16 #include "AudioReader.h"
  17
  18
  19 class AudioFormatConverter : public AudioReader {
  20 public:
  21                                                                 AudioFormatConverter(AudioReader* source,
  22                                                                         uint32 format, uint32 byte_order);
  23         virtual                                         ~AudioFormatConverter();
  24
  25         virtual bigtime_t                       InitialLatency() const;
  26         virtual status_t                        Read(void* buffer, int64 pos, int64 frames);
  27
  28         virtual status_t                        InitCheck() const;
  29
  30                         AudioReader*            Source() const;
  31
  32 protected:
  33                         AudioReader*            fSource;
  34 };
  35
  36 #endif  // AUDIO_FORMAT_CONVERTER_H