Julius 4.2
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00001 #ifndef PA_WIN_WMME_H 00002 #define PA_WIN_WMME_H 00003 /* 00004 * $Id: pa_win_wmme.h,v 1.1 2009/10/21 16:47:20 sumomo Exp $ 00005 * PortAudio Portable Real-Time Audio Library 00006 * MME specific extensions 00007 * 00008 * Copyright (c) 1999-2000 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 00046 #include "portaudio.h" 00047 #include "pa_win_waveformat.h" 00048 00049 #ifdef __cplusplus 00050 extern "C" 00051 { 00052 #endif /* __cplusplus */ 00053 00054 00055 #define paWinMmeUseLowLevelLatencyParameters (0x01) 00056 #define paWinMmeUseMultipleDevices (0x02) /* use mme specific multiple device feature */ 00057 #define paWinMmeUseChannelMask (0x04) 00058 00059 /* By default, the mme implementation drops the processing thread's priority 00060 to THREAD_PRIORITY_NORMAL and sleeps the thread if the CPU load exceeds 100% 00061 This flag disables any priority throttling. The processing thread will always 00062 run at THREAD_PRIORITY_TIME_CRITICAL. 00063 */ 00064 #define paWinMmeDontThrottleOverloadedProcessingThread (0x08) 00065 00066 00067 typedef struct PaWinMmeDeviceAndChannelCount{ 00068 PaDeviceIndex device; 00069 int channelCount; 00070 }PaWinMmeDeviceAndChannelCount; 00071 00072 00073 typedef struct PaWinMmeStreamInfo{ 00074 unsigned long size; 00075 PaHostApiTypeId hostApiType; 00076 unsigned long version; 00078 unsigned long flags; 00079 00080 /* low-level latency setting support 00081 These settings control the number and size of host buffers in order 00082 to set latency. They will be used instead of the generic parameters 00083 to Pa_OpenStream() if flags contains the PaWinMmeUseLowLevelLatencyParameters 00084 flag. 00085 00086 If PaWinMmeStreamInfo structures with PaWinMmeUseLowLevelLatencyParameters 00087 are supplied for both input and output in a full duplex stream, then the 00088 input and output framesPerBuffer must be the same, or the larger of the 00089 two must be a multiple of the smaller, otherwise a 00090 paIncompatibleHostApiSpecificStreamInfo error will be returned from 00091 Pa_OpenStream(). 00092 */ 00093 unsigned long framesPerBuffer; 00094 unsigned long bufferCount; /* formerly numBuffers */ 00095 00096 /* multiple devices per direction support 00097 If flags contains the PaWinMmeUseMultipleDevices flag, 00098 this functionality will be used, otherwise the device parameter to 00099 Pa_OpenStream() will be used instead. 00100 If devices are specified here, the corresponding device parameter 00101 to Pa_OpenStream() should be set to paUseHostApiSpecificDeviceSpecification, 00102 otherwise an paInvalidDevice error will result. 00103 The total number of channels accross all specified devices 00104 must agree with the corresponding channelCount parameter to 00105 Pa_OpenStream() otherwise a paInvalidChannelCount error will result. 00106 */ 00107 PaWinMmeDeviceAndChannelCount *devices; 00108 unsigned long deviceCount; 00109 00110 /* 00111 support for WAVEFORMATEXTENSIBLE channel masks. If flags contains 00112 paWinMmeUseChannelMask this allows you to specify which speakers 00113 to address in a multichannel stream. Constants for channelMask 00114 are specified in pa_win_waveformat.h 00115 00116 */ 00117 PaWinWaveFormatChannelMask channelMask; 00118 00119 }PaWinMmeStreamInfo; 00120 00121 00131 int PaWinMME_GetStreamInputHandleCount( PaStream* stream ); 00132 00133 00144 HWAVEIN PaWinMME_GetStreamInputHandle( PaStream* stream, int handleIndex ); 00145 00146 00156 int PaWinMME_GetStreamOutputHandleCount( PaStream* stream ); 00157 00158 00169 HWAVEOUT PaWinMME_GetStreamOutputHandle( PaStream* stream, int handleIndex ); 00170 00171 00172 #ifdef __cplusplus 00173 } 00174 #endif /* __cplusplus */ 00175 00176 #endif /* PA_WIN_WMME_H */