workbench/devs/AHI/Device/mixer.h

   1 /*
   2      AHI - Hardware independent audio subsystem
   3      Copyright (C) 1996-2005 Martin Blom <martin@blom.org>
   4
   5      This library is free software; you can redistribute it and/or
   6      modify it under the terms of the GNU Library General Public
   7      License as published by the Free Software Foundation; either
   8      version 2 of the License, or (at your option) any later version.
   9
  10      This library is distributed in the hope that it will be useful,
  11      but WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      Library General Public License for more details.
  14
  15      You should have received a copy of the GNU Library General Public
  16      License along with this library; if not, write to the
  17      Free Software Foundation, Inc., 59 Temple Place - Suite 330, Cambridge,
  18      MA 02139, USA.
  19 */
  20
  21 #ifndef ahi_mixer_h
  22 #define ahi_mixer_h
  23
  24 #include <config.h>
  25
  26 #include "ahi_def.h"
  27 #include "addroutines.h"
  28
  29
  30 BOOL
  31 InitMixroutine ( struct AHIPrivAudioCtrl *audioctrl );
  32
  33
  34 void
  35 CleanUpMixroutine ( struct AHIPrivAudioCtrl *audioctrl );
  36
  37
  38 void
  39 SelectAddRoutine ( Fixed     VolumeLeft,
  40                    Fixed     VolumeRight,
  41                    ULONG     SampleType,
  42                    struct    AHIPrivAudioCtrl *audioctrl,
  43                    LONG     *ScaleLeft,
  44                    LONG     *ScaleRight,
  45                    ADDFUNC **AddRoutine );
  46
  47
  48 void
  49 MixerFunc( struct Hook*             hook,
  50            struct AHIPrivAudioCtrl* audioctrl,
  51            void*                    dst );
  52
  53
  54 void
  55 Mix( struct Hook*             unused_Hook,
  56      struct AHIPrivAudioCtrl* audioctrl,
  57      void*                    dst );
  58
  59 void
  60 DoMasterVolume ( void *buffer,
  61                  struct AHIPrivAudioCtrl *audioctrl );
  62
  63
  64 void
  65 DoOutputBuffer ( void *buffer,
  66                  struct AHIPrivAudioCtrl *audioctrl );
  67
  68
  69 void
  70 DoChannelInfo ( struct AHIPrivAudioCtrl *audioctrl );
  71
  72
  73 LONG
  74 CalcSamples ( Fixed64 Add,
  75               ULONG   Type,
  76               Fixed64 LastOffset,
  77               Fixed64 Offset );
  78
  79 #endif /* ahi_mixer_h */