src/add-ons/media/media-add-ons/mixer/MixerUtils.h

   1 /*
   2  * Copyright 2003-2009 Haiku Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Marcus Overhagen
   7  */
   8 #ifndef _MIXER_UTILS_H
   9 #define _MIXER_UTILS_H
  10
  11
  12 #ifndef __SGI_STL_INTERNAL_ALGOBASE_H
  13 template<class t> const t & max(const t &t1, const t &t2) { return (t1 > t2) ?  t1 : t2; }
  14 template<class t> const t & min(const t &t1, const t &t2) { return (t1 < t2) ?  t1 : t2; }
  15 #endif
  16 template<class t> const t abs(const t t1) { return (t1 < 0) ?  - t1 : t1; }
  17
  18
  19 void fix_multiaudio_format(media_multi_audio_format *format);
  20
  21 int count_nonzero_bits(uint32 value);
  22
  23 uint32 GetChannelMask(int channel, uint32 all_channel_masks);
  24 int GetChannelType(int channel, uint32 all_channel_masks);
  25
  26 bool HasKawamba();
  27
  28 void ZeroFill(float *_dst, int32 _dst_sample_offset, int32 _sample_count);
  29
  30 bigtime_t buffer_duration(const media_multi_audio_format & format);
  31
  32 int bytes_per_sample(const media_multi_audio_format & format);
  33
  34 int bytes_per_frame(const media_multi_audio_format & format);
  35 int frames_per_buffer(const media_multi_audio_format & format);
  36
  37 int64 frames_for_duration(double framerate, bigtime_t duration);
  38 bigtime_t duration_for_frames(double framerate, int64 frames);
  39
  40 int ChannelMaskToChannelType(uint32 mask);
  41 uint32 ChannelTypeToChannelMask(int type);
  42
  43 double us_to_s(bigtime_t usecs);
  44 bigtime_t s_to_us(double secs);
  45
  46 class MixerInput;
  47 class MixerOutput;
  48
  49 const char *StringForFormat(char *buf, MixerOutput *output);
  50 const char *StringForFormat(char *buf, MixerInput *input);
  51 const char *StringForChannelMask(char *buf, uint32 mask);
  52 const char *StringForChannelType(char *buf, int type);
  53
  54 #endif // _MIXER_UTILS_H