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Revision 273 - (show annotations) (download)
Fri Nov 12 01:10:22 2010 UTC (9 years, 2 months ago) by william
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Auto Commited Import of: pcsx2-0.9.7-DEBUG (upstream: v0.9.7.4013 local: v0.9.7.197-latest) in ./trunk
1 #ifndef PA_WIN_WMME_H
2 #define PA_WIN_WMME_H
3 /*
4 * $Id: pa_win_wmme.h 1405 2009-03-08 08:10:55Z rossb $
5 * PortAudio Portable Real-Time Audio Library
6 * MME specific extensions
7 *
8 * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining
11 * a copy of this software and associated documentation files
12 * (the "Software"), to deal in the Software without restriction,
13 * including without limitation the rights to use, copy, modify, merge,
14 * publish, distribute, sublicense, and/or sell copies of the Software,
15 * and to permit persons to whom the Software is furnished to do so,
16 * subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
25 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
26 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 */
29
30 /*
31 * The text above constitutes the entire PortAudio license; however,
32 * the PortAudio community also makes the following non-binding requests:
33 *
34 * Any person wishing to distribute modifications to the Software is
35 * requested to send the modifications to the original developer so that
36 * they can be incorporated into the canonical version. It is also
37 * requested that these non-binding requests be included along with the
38 * license above.
39 */
40
41 /** @file
42 @ingroup public_header
43 @brief WMME-specific PortAudio API extension header file.
44 */
45
46
47 #include "portaudio.h"
48 #include "pa_win_waveformat.h"
49
50 #ifdef __cplusplus
51 extern "C"
52 {
53 #endif /* __cplusplus */
54
55
56 /* The following are flags which can be set in
57 PaWinMmeStreamInfo's flags field.
58 */
59
60 #define paWinMmeUseLowLevelLatencyParameters (0x01)
61 #define paWinMmeUseMultipleDevices (0x02) /* use mme specific multiple device feature */
62 #define paWinMmeUseChannelMask (0x04)
63
64 /* By default, the mme implementation drops the processing thread's priority
65 to THREAD_PRIORITY_NORMAL and sleeps the thread if the CPU load exceeds 100%
66 This flag disables any priority throttling. The processing thread will always
67 run at THREAD_PRIORITY_TIME_CRITICAL.
68 */
69 #define paWinMmeDontThrottleOverloadedProcessingThread (0x08)
70
71 /* Flags for non-PCM spdif passthrough.
72 */
73 #define paWinMmeWaveFormatDolbyAc3Spdif (0x10)
74 #define paWinMmeWaveFormatWmaSpdif (0x20)
75
76
77 typedef struct PaWinMmeDeviceAndChannelCount{
78 PaDeviceIndex device;
79 int channelCount;
80 }PaWinMmeDeviceAndChannelCount;
81
82
83 typedef struct PaWinMmeStreamInfo{
84 unsigned long size; /**< sizeof(PaWinMmeStreamInfo) */
85 PaHostApiTypeId hostApiType; /**< paMME */
86 unsigned long version; /**< 1 */
87
88 unsigned long flags;
89
90 /* low-level latency setting support
91 These settings control the number and size of host buffers in order
92 to set latency. They will be used instead of the generic parameters
93 to Pa_OpenStream() if flags contains the PaWinMmeUseLowLevelLatencyParameters
94 flag.
95
96 If PaWinMmeStreamInfo structures with PaWinMmeUseLowLevelLatencyParameters
97 are supplied for both input and output in a full duplex stream, then the
98 input and output framesPerBuffer must be the same, or the larger of the
99 two must be a multiple of the smaller, otherwise a
100 paIncompatibleHostApiSpecificStreamInfo error will be returned from
101 Pa_OpenStream().
102 */
103 unsigned long framesPerBuffer;
104 unsigned long bufferCount; /* formerly numBuffers */
105
106 /* multiple devices per direction support
107 If flags contains the PaWinMmeUseMultipleDevices flag,
108 this functionality will be used, otherwise the device parameter to
109 Pa_OpenStream() will be used instead.
110 If devices are specified here, the corresponding device parameter
111 to Pa_OpenStream() should be set to paUseHostApiSpecificDeviceSpecification,
112 otherwise an paInvalidDevice error will result.
113 The total number of channels accross all specified devices
114 must agree with the corresponding channelCount parameter to
115 Pa_OpenStream() otherwise a paInvalidChannelCount error will result.
116 */
117 PaWinMmeDeviceAndChannelCount *devices;
118 unsigned long deviceCount;
119
120 /*
121 support for WAVEFORMATEXTENSIBLE channel masks. If flags contains
122 paWinMmeUseChannelMask this allows you to specify which speakers
123 to address in a multichannel stream. Constants for channelMask
124 are specified in pa_win_waveformat.h
125
126 */
127 PaWinWaveFormatChannelMask channelMask;
128
129 }PaWinMmeStreamInfo;
130
131
132 /** Retrieve the number of wave in handles used by a PortAudio WinMME stream.
133 Returns zero if the stream is output only.
134
135 @return A non-negative value indicating the number of wave in handles
136 or, a PaErrorCode (which are always negative) if PortAudio is not initialized
137 or an error is encountered.
138
139 @see PaWinMME_GetStreamInputHandle
140 */
141 int PaWinMME_GetStreamInputHandleCount( PaStream* stream );
142
143
144 /** Retrieve a wave in handle used by a PortAudio WinMME stream.
145
146 @param stream The stream to query.
147 @param handleIndex The zero based index of the wave in handle to retrieve. This
148 should be in the range [0, PaWinMME_GetStreamInputHandleCount(stream)-1].
149
150 @return A valid wave in handle, or NULL if an error occurred.
151
152 @see PaWinMME_GetStreamInputHandle
153 */
154 HWAVEIN PaWinMME_GetStreamInputHandle( PaStream* stream, int handleIndex );
155
156
157 /** Retrieve the number of wave out handles used by a PortAudio WinMME stream.
158 Returns zero if the stream is input only.
159
160 @return A non-negative value indicating the number of wave out handles
161 or, a PaErrorCode (which are always negative) if PortAudio is not initialized
162 or an error is encountered.
163
164 @see PaWinMME_GetStreamOutputHandle
165 */
166 int PaWinMME_GetStreamOutputHandleCount( PaStream* stream );
167
168
169 /** Retrieve a wave out handle used by a PortAudio WinMME stream.
170
171 @param stream The stream to query.
172 @param handleIndex The zero based index of the wave out handle to retrieve.
173 This should be in the range [0, PaWinMME_GetStreamOutputHandleCount(stream)-1].
174
175 @return A valid wave out handle, or NULL if an error occurred.
176
177 @see PaWinMME_GetStreamOutputHandleCount
178 */
179 HWAVEOUT PaWinMME_GetStreamOutputHandle( PaStream* stream, int handleIndex );
180
181
182 #ifdef __cplusplus
183 }
184 #endif /* __cplusplus */
185
186 #endif /* PA_WIN_WMME_H */

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