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pa_win_ds.h

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00001 #ifndef PA_WIN_DS_H
00002 #define PA_WIN_DS_H
00003 /*
00004  * $Id:  $
00005  * PortAudio Portable Real-Time Audio Library
00006  * DirectSound specific extensions
00007  *
00008  * Copyright (c) 1999-2007 Ross Bencina and Phil Burk
00009  *
00010  * Permission is hereby granted, free of charge, to any person obtaining
00011  * a copy of this software and associated documentation files
00012  * (the "Software"), to deal in the Software without restriction,
00013  * including without limitation the rights to use, copy, modify, merge,
00014  * publish, distribute, sublicense, and/or sell copies of the Software,
00015  * and to permit persons to whom the Software is furnished to do so,
00016  * subject to the following conditions:
00017  *
00018  * The above copyright notice and this permission notice shall be
00019  * included in all copies or substantial portions of the Software.
00020  *
00021  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00022  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00023  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00024  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
00025  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
00026  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00027  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00028  */
00029 
00030 /*
00031  * The text above constitutes the entire PortAudio license; however, 
00032  * the PortAudio community also makes the following non-binding requests:
00033  *
00034  * Any person wishing to distribute modifications to the Software is
00035  * requested to send the modifications to the original developer so that
00036  * they can be incorporated into the canonical version. It is also 
00037  * requested that these non-binding requests be included along with the 
00038  * license above.
00039  */
00040 
00047 #include "portaudio.h"
00048 #include "pa_win_waveformat.h"
00049 
00050 #ifdef __cplusplus
00051 extern "C"
00052 {
00053 #endif /* __cplusplus */
00054 
00055 
00056 #define paWinDirectSoundUseLowLevelLatencyParameters            (0x01)
00057 #define paWinDirectSoundUseChannelMask                          (0x04)
00058 
00059 
00060 typedef struct PaWinDirectSoundStreamInfo{
00061     unsigned long size;             
00062     PaHostApiTypeId hostApiType;    
00063     unsigned long version;          
00065     unsigned long flags;
00066 
00067     /* low-level latency setting support
00068         TODO ** NOT IMPLEMENTED **
00069         These settings control the number and size of host buffers in order
00070         to set latency. They will be used instead of the generic parameters
00071         to Pa_OpenStream() if flags contains the paWinDirectSoundUseLowLevelLatencyParameters
00072         flag.
00073 
00074         If PaWinDirectSoundStreamInfo structures with paWinDirectSoundUseLowLevelLatencyParameters
00075         are supplied for both input and output in a full duplex stream, then the
00076         input and output framesPerBuffer must be the same, or the larger of the
00077         two must be a multiple of the smaller, otherwise a
00078         paIncompatibleHostApiSpecificStreamInfo error will be returned from
00079         Pa_OpenStream().
00080 
00081     unsigned long framesPerBuffer;
00082     */
00083 
00084     /*
00085         support for WAVEFORMATEXTENSIBLE channel masks. If flags contains
00086         paWinDirectSoundUseChannelMask this allows you to specify which speakers 
00087         to address in a multichannel stream. Constants for channelMask
00088         are specified in pa_win_waveformat.h
00089 
00090     */
00091     PaWinWaveFormatChannelMask channelMask;
00092 
00093 }PaWinDirectSoundStreamInfo;
00094 
00101 LPGUID PaWinDS_GetStreamInputGUID( PaStream* s );
00102 
00109 LPGUID PaWinDS_GetStreamOutputGUID( PaStream* s );
00110 
00111 
00112 #ifdef __cplusplus
00113 }
00114 #endif /* __cplusplus */
00115 
00116 #endif /* PA_WIN_DS_H */                                  

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