PortAudio: pa_win_waveformat.h Source File

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pa_win_waveformat.h
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1 #ifndef PA_WIN_WAVEFORMAT_H
2 #define PA_WIN_WAVEFORMAT_H
3
4 /*
5 * PortAudio Portable Real-Time Audio Library
6 * Windows WAVEFORMAT* data structure utilities
7 * portaudio.h should be included before this file.
8 *
9 * Copyright (c) 2007 Ross Bencina
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining
12 * a copy of this software and associated documentation files
13 * (the "Software"), to deal in the Software without restriction,
14 * including without limitation the rights to use, copy, modify, merge,
15 * publish, distribute, sublicense, and/or sell copies of the Software,
16 * and to permit persons to whom the Software is furnished to do so,
17 * subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice shall be
20 * included in all copies or substantial portions of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
25 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
26 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
27 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 */
30
31 /*
32 * The text above constitutes the entire PortAudio license; however,
33 * the PortAudio community also makes the following non-binding requests:
34 *
35 * Any person wishing to distribute modifications to the Software is
36 * requested to send the modifications to the original developer so that
37 * they can be incorporated into the canonical version. It is also
38 * requested that these non-binding requests be included along with the
39 * license above.
40 */
41
47 #ifdef __cplusplus
48 extern "C" {
49 #endif
50
51 /*
52 The following #defines for speaker channel masks are the same
53 as those in ksmedia.h, except with PAWIN_ prepended, KSAUDIO_ removed
54 in some cases, and casts to PaWinWaveFormatChannelMask added.
55 */
56
57 typedef unsigned long PaWinWaveFormatChannelMask;
58
59 /* Speaker Positions: */
60 #define PAWIN_SPEAKER_FRONT_LEFT ((PaWinWaveFormatChannelMask)0x1)
61 #define PAWIN_SPEAKER_FRONT_RIGHT ((PaWinWaveFormatChannelMask)0x2)
62 #define PAWIN_SPEAKER_FRONT_CENTER ((PaWinWaveFormatChannelMask)0x4)
63 #define PAWIN_SPEAKER_LOW_FREQUENCY ((PaWinWaveFormatChannelMask)0x8)
64 #define PAWIN_SPEAKER_BACK_LEFT ((PaWinWaveFormatChannelMask)0x10)
65 #define PAWIN_SPEAKER_BACK_RIGHT ((PaWinWaveFormatChannelMask)0x20)
66 #define PAWIN_SPEAKER_FRONT_LEFT_OF_CENTER ((PaWinWaveFormatChannelMask)0x40)
67 #define PAWIN_SPEAKER_FRONT_RIGHT_OF_CENTER ((PaWinWaveFormatChannelMask)0x80)
68 #define PAWIN_SPEAKER_BACK_CENTER ((PaWinWaveFormatChannelMask)0x100)
69 #define PAWIN_SPEAKER_SIDE_LEFT ((PaWinWaveFormatChannelMask)0x200)
70 #define PAWIN_SPEAKER_SIDE_RIGHT ((PaWinWaveFormatChannelMask)0x400)
71 #define PAWIN_SPEAKER_TOP_CENTER ((PaWinWaveFormatChannelMask)0x800)
72 #define PAWIN_SPEAKER_TOP_FRONT_LEFT ((PaWinWaveFormatChannelMask)0x1000)
73 #define PAWIN_SPEAKER_TOP_FRONT_CENTER ((PaWinWaveFormatChannelMask)0x2000)
74 #define PAWIN_SPEAKER_TOP_FRONT_RIGHT ((PaWinWaveFormatChannelMask)0x4000)
75 #define PAWIN_SPEAKER_TOP_BACK_LEFT ((PaWinWaveFormatChannelMask)0x8000)
76 #define PAWIN_SPEAKER_TOP_BACK_CENTER ((PaWinWaveFormatChannelMask)0x10000)
77 #define PAWIN_SPEAKER_TOP_BACK_RIGHT ((PaWinWaveFormatChannelMask)0x20000)
78
79 /* Bit mask locations reserved for future use */
80 #define PAWIN_SPEAKER_RESERVED ((PaWinWaveFormatChannelMask)0x7FFC0000)
81
82 /* Used to specify that any possible permutation of speaker configurations */
83 #define PAWIN_SPEAKER_ALL ((PaWinWaveFormatChannelMask)0x80000000)
84
85 /* DirectSound Speaker Config */
86 #define PAWIN_SPEAKER_DIRECTOUT 0
87 #define PAWIN_SPEAKER_MONO (PAWIN_SPEAKER_FRONT_CENTER)
88 #define PAWIN_SPEAKER_STEREO (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT)
89 #define PAWIN_SPEAKER_QUAD (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
90 PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT)
91 #define PAWIN_SPEAKER_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
92 PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_BACK_CENTER)
93 #define PAWIN_SPEAKER_5POINT1 (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
94 PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
95 PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT)
96 #define PAWIN_SPEAKER_7POINT1 (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
97 PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
98 PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT | \
99 PAWIN_SPEAKER_FRONT_LEFT_OF_CENTER | PAWIN_SPEAKER_FRONT_RIGHT_OF_CENTER)
100 #define PAWIN_SPEAKER_5POINT1_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
101 PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
102 PAWIN_SPEAKER_SIDE_LEFT | PAWIN_SPEAKER_SIDE_RIGHT)
103 #define PAWIN_SPEAKER_7POINT1_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
104 PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
105 PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT | \
106 PAWIN_SPEAKER_SIDE_LEFT | PAWIN_SPEAKER_SIDE_RIGHT)
107 /*
108 According to the Microsoft documentation:
109 The following are obsolete 5.1 and 7.1 settings (they lack side speakers). Note this means
110 that the default 5.1 and 7.1 settings (KSAUDIO_SPEAKER_5POINT1 and KSAUDIO_SPEAKER_7POINT1 are
111 similarly obsolete but are unchanged for compatibility reasons).
112 */
113 #define PAWIN_SPEAKER_5POINT1_BACK PAWIN_SPEAKER_5POINT1
114 #define PAWIN_SPEAKER_7POINT1_WIDE PAWIN_SPEAKER_7POINT1
115
116 /* DVD Speaker Positions */
117 #define PAWIN_SPEAKER_GROUND_FRONT_LEFT PAWIN_SPEAKER_FRONT_LEFT
118 #define PAWIN_SPEAKER_GROUND_FRONT_CENTER PAWIN_SPEAKER_FRONT_CENTER
119 #define PAWIN_SPEAKER_GROUND_FRONT_RIGHT PAWIN_SPEAKER_FRONT_RIGHT
120 #define PAWIN_SPEAKER_GROUND_REAR_LEFT PAWIN_SPEAKER_BACK_LEFT
121 #define PAWIN_SPEAKER_GROUND_REAR_RIGHT PAWIN_SPEAKER_BACK_RIGHT
122 #define PAWIN_SPEAKER_TOP_MIDDLE PAWIN_SPEAKER_TOP_CENTER
123 #define PAWIN_SPEAKER_SUPER_WOOFER PAWIN_SPEAKER_LOW_FREQUENCY
124
125
126 /*
127 PaWinWaveFormat is defined here to provide compatibility with
128 compilation environments which don't have headers defining
129 WAVEFORMATEXTENSIBLE (e.g. older versions of MSVC, Borland C++ etc.
130
131 The fields for WAVEFORMATEX and WAVEFORMATEXTENSIBLE are declared as an
132 unsigned char array here to avoid clients who include this file having
133 a dependency on windows.h and mmsystem.h, and also to to avoid having
134 to write separate packing pragmas for each compiler.
135 */
136 #define PAWIN_SIZEOF_WAVEFORMATEX 18
137 #define PAWIN_SIZEOF_WAVEFORMATEXTENSIBLE (PAWIN_SIZEOF_WAVEFORMATEX + 22)
138
139 typedef struct{
140 unsigned char fields[ PAWIN_SIZEOF_WAVEFORMATEXTENSIBLE ];
141 unsigned long extraLongForAlignment; /* ensure that compiler aligns struct to DWORD */
142 } PaWinWaveFormat;
143
144 /*
145 WAVEFORMATEXTENSIBLE fields:
146
147 union {
148 WORD wValidBitsPerSample;
149 WORD wSamplesPerBlock;
150 WORD wReserved;
151 } Samples;
152 DWORD dwChannelMask;
153 GUID SubFormat;
154 */
155
156 #define PAWIN_INDEXOF_WVALIDBITSPERSAMPLE (PAWIN_SIZEOF_WAVEFORMATEX+0)
157 #define PAWIN_INDEXOF_DWCHANNELMASK (PAWIN_SIZEOF_WAVEFORMATEX+2)
158 #define PAWIN_INDEXOF_SUBFORMAT (PAWIN_SIZEOF_WAVEFORMATEX+6)
159
160
161 /*
162 Valid values to pass for the waveFormatTag PaWin_InitializeWaveFormatEx and
163 PaWin_InitializeWaveFormatExtensible functions below. These must match
164 the standard Windows WAVE_FORMAT_* values.
165 */
166 #define PAWIN_WAVE_FORMAT_PCM (1)
167 #define PAWIN_WAVE_FORMAT_IEEE_FLOAT (3)
168 #define PAWIN_WAVE_FORMAT_DOLBY_AC3_SPDIF (0x0092)
169 #define PAWIN_WAVE_FORMAT_WMA_SPDIF (0x0164)
170
171
172 /*
173 returns PAWIN_WAVE_FORMAT_PCM or PAWIN_WAVE_FORMAT_IEEE_FLOAT
174 depending on the sampleFormat parameter.
175 */
176 int PaWin_SampleFormatToLinearWaveFormatTag( PaSampleFormat sampleFormat );
177
178 /*
179 Use the following two functions to initialize the waveformat structure.
180 */
181
182 void PaWin_InitializeWaveFormatEx( PaWinWaveFormat *waveFormat,
183 int numChannels, PaSampleFormat sampleFormat, int waveFormatTag, double sampleRate );
184
185
186 void PaWin_InitializeWaveFormatExtensible( PaWinWaveFormat *waveFormat,
187 int numChannels, PaSampleFormat sampleFormat, int waveFormatTag, double sampleRate,
188 PaWinWaveFormatChannelMask channelMask );
189
190
191 /* Map a channel count to a speaker channel mask */
192 PaWinWaveFormatChannelMask PaWin_DefaultChannelMask( int numChannels );
193
194
195 #ifdef __cplusplus
196 }
197 #endif /* __cplusplus */
198
199 #endif /* PA_WIN_WAVEFORMAT_H */