diff options
Diffstat (limited to 'medley_new/src/lib/portmixer')
-rw-r--r-- | medley_new/src/lib/portmixer/portmixer.pas | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/medley_new/src/lib/portmixer/portmixer.pas b/medley_new/src/lib/portmixer/portmixer.pas new file mode 100644 index 00000000..b84e0cd6 --- /dev/null +++ b/medley_new/src/lib/portmixer/portmixer.pas @@ -0,0 +1,149 @@ +{* + * PortMixer + * PortMixer API Header File + * + * Copyright (c) 2002, 2006 + * + * Written by Dominic Mazzoni + * and Leland Lucius + * + * PortMixer is intended to work side-by-side with PortAudio, + * the Portable Real-Time Audio Library by Ross Bencina and + * Phil Burk. + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + *} +unit portmixer; + +{$IFDEF FPC} + {$PACKRECORDS C} (* GCC/Visual C/C++ compatible record packing *) + {$MODE DELPHI } +{$ENDIF} + +interface + +uses + ctypes, + portaudio; + +const +{$IF Defined(MSWINDOWS)} + LibName = 'portmixer.dll'; +{$ELSEIF Defined(DARWIN)} +// LibName = 'libportmixer.dylib'; +// {$LINKLIB libportaudio} +{$ELSEIF Defined(UNIX)} + LibName = 'libportmixer.so'; +{$IFEND} + +type + PPxMixer = Pointer; + TPxVolume = cfloat; {* 0.0 (min) --> 1.0 (max) *} + TPxBalance = cfloat; {* -1.0 (left) --> 1.0 (right) *} + +{* + Px_OpenMixer() returns a mixer which will work with the given PortAudio + audio device. Pass 0 as the index for the first (default) mixer. +*} + +function Px_OpenMixer( pa_stream: Pointer; i: cint ): PPxMixer; cdecl; external LibName; + +{* + Px_CloseMixer() closes a mixer opened using Px_OpenMixer and frees any + memory associated with it. +*} + +procedure Px_CloseMixer( mixer: PPxMixer ); cdecl; external LibName; + +{* + Px_GetNumMixers returns the number of mixers which could be + used with the given PortAudio device. On most systems, there + will be only one mixer for each device; however there may be + multiple mixers for each device, or possibly multiple mixers + which are independent of any particular PortAudio device. +*} + +function Px_GetNumMixers( mixer: PPxMixer ): cint; cdecl; external LibName; +function Px_GetMixerName( mixer: PPxMixer; i: cint ): PChar; cdecl; external LibName; + +{* + Master (output) volume +*} + +function Px_GetMasterVolume( mixer: PPxMixer ): TPxVolume; cdecl; external LibName; +procedure Px_SetMasterVolume( mixer: PPxMixer; volume: TPxVolume ); cdecl; external LibName; + +{* + Main output volume +*} + +function Px_GetPCMOutputVolume( mixer: PPxMixer ): TPxVolume; cdecl; external LibName; +procedure Px_SetPCMOutputVolume( mixer: PPxMixer; volume: TPxVolume ); cdecl; external LibName; +function Px_SupportsPCMOutputVolume( mixer: PPxMixer ): cint; cdecl; external LibName; + +{* + All output volumes +*} + +function Px_GetNumOutputVolumes( mixer: PPxMixer ): cint; cdecl; external LibName; +function Px_GetOutputVolumeName( mixer: PPxMixer; i: cint ): PChar; cdecl; external LibName; +function Px_GetOutputVolume( mixer: PPxMixer; i: cint ): TPxVolume; cdecl; external LibName; +procedure Px_SetOutputVolume( mixer: PPxMixer; i: cint; volume: TPxVolume ); cdecl; external LibName; + +{* + Input source +*} + +function Px_GetNumInputSources( mixer: PPxMixer ): cint; cdecl; external LibName; +function Px_GetInputSourceName( mixer: PPxMixer; i: cint): PChar; cdecl; external LibName; +function Px_GetCurrentInputSource( mixer: PPxMixer ): cint; cdecl; external LibName; {* may return -1 == none *} +procedure Px_SetCurrentInputSource( mixer: PPxMixer; i: cint ); cdecl; external LibName; + +{* + Input volume +*} + +function Px_GetInputVolume( mixer: PPxMixer ): TPxVolume; cdecl; external LibName; +procedure Px_SetInputVolume( mixer: PPxMixer; volume: TPxVolume ); cdecl; external LibName; + +{* + Balance +*} + +function Px_SupportsOutputBalance( mixer: PPxMixer ): cint; cdecl; external LibName; +function Px_GetOutputBalance( mixer: PPxMixer ): TPxBalance; cdecl; external LibName; +procedure Px_SetOutputBalance( mixer: PPxMixer; balance: TPxBalance ); cdecl; external LibName; + +{* + Playthrough +*} + +function Px_SupportsPlaythrough( mixer: PPxMixer ): cint; cdecl; external LibName; +function Px_GetPlaythrough( mixer: PPxMixer ): TPxVolume; cdecl; external LibName; +procedure Px_SetPlaythrough( mixer: PPxMixer; volume: TPxVolume ); cdecl; external LibName; + +implementation + +end. |