Get the offset even if the current buffer is 0
[openal-soft.git] / include / AL / alc.h
blob4e84af422313e63125930d3952bcd8faa9306b37
1 #ifndef AL_ALC_H
2 #define AL_ALC_H
4 #if defined(__cplusplus)
5 extern "C" {
6 #endif
8 #if defined(_WIN32) && !defined(_XBOX)
9 #if defined(AL_BUILD_LIBRARY)
10 #define ALC_API __declspec(dllexport)
11 #else
12 #define ALC_API __declspec(dllimport)
13 #endif
14 #else
15 #if defined(AL_BUILD_LIBRARY) && defined(HAVE_GCC_VISIBILITY)
16 #define ALC_API __attribute__((visibility("protected")))
17 #else
18 #define ALC_API extern
19 #endif
20 #endif
22 #if defined(_WIN32)
23 #define ALC_APIENTRY __cdecl
24 #else
25 #define ALC_APIENTRY
26 #endif
28 #if defined(TARGET_OS_MAC) && TARGET_OS_MAC
29 #pragma export on
30 #endif
33 * The ALCAPI, ALCAPIENTRY, and ALC_INVALID macros are deprecated, but are
34 * included for applications porting code from AL 1.0
36 #define ALCAPI ALC_API
37 #define ALCAPIENTRY ALC_APIENTRY
38 #define ALC_INVALID 0
41 #define ALC_VERSION_0_1 1
43 typedef struct ALCdevice_struct ALCdevice;
44 typedef struct ALCcontext_struct ALCcontext;
47 /** 8-bit boolean */
48 typedef char ALCboolean;
50 /** character */
51 typedef char ALCchar;
53 /** signed 8-bit 2's complement integer */
54 typedef signed char ALCbyte;
56 /** unsigned 8-bit integer */
57 typedef unsigned char ALCubyte;
59 /** signed 16-bit 2's complement integer */
60 typedef short ALCshort;
62 /** unsigned 16-bit integer */
63 typedef unsigned short ALCushort;
65 /** signed 32-bit 2's complement integer */
66 typedef int ALCint;
68 /** unsigned 32-bit integer */
69 typedef unsigned int ALCuint;
71 /** non-negative 32-bit binary integer size */
72 typedef int ALCsizei;
74 /** enumerated 32-bit value */
75 typedef int ALCenum;
77 /** 32-bit IEEE754 floating-point */
78 typedef float ALCfloat;
80 /** 64-bit IEEE754 floating-point */
81 typedef double ALCdouble;
83 /** void type (for opaque pointers only) */
84 typedef void ALCvoid;
87 /* Enumerant values begin at column 50. No tabs. */
89 /* Boolean False. */
90 #define ALC_FALSE 0
92 /* Boolean True. */
93 #define ALC_TRUE 1
95 /**
96 * followed by <int> Hz
98 #define ALC_FREQUENCY 0x1007
101 * followed by <int> Hz
103 #define ALC_REFRESH 0x1008
106 * followed by AL_TRUE, AL_FALSE
108 #define ALC_SYNC 0x1009
111 * followed by <int> Num of requested Mono (3D) Sources
113 #define ALC_MONO_SOURCES 0x1010
116 * followed by <int> Num of requested Stereo Sources
118 #define ALC_STEREO_SOURCES 0x1011
121 * errors
125 * No error
127 #define ALC_NO_ERROR ALC_FALSE
130 * No device
132 #define ALC_INVALID_DEVICE 0xA001
135 * invalid context ID
137 #define ALC_INVALID_CONTEXT 0xA002
140 * bad enum
142 #define ALC_INVALID_ENUM 0xA003
145 * bad value
147 #define ALC_INVALID_VALUE 0xA004
150 * Out of memory.
152 #define ALC_OUT_OF_MEMORY 0xA005
156 * The Specifier string for default device
158 #define ALC_DEFAULT_DEVICE_SPECIFIER 0x1004
159 #define ALC_DEVICE_SPECIFIER 0x1005
160 #define ALC_EXTENSIONS 0x1006
162 #define ALC_MAJOR_VERSION 0x1000
163 #define ALC_MINOR_VERSION 0x1001
165 #define ALC_ATTRIBUTES_SIZE 0x1002
166 #define ALC_ALL_ATTRIBUTES 0x1003
170 * Capture extension
172 #define ALC_CAPTURE_DEVICE_SPECIFIER 0x310
173 #define ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER 0x311
174 #define ALC_CAPTURE_SAMPLES 0x312
178 * Context Management
180 ALC_API ALCcontext * ALC_APIENTRY alcCreateContext( ALCdevice *device, const ALCint* attrlist );
182 ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent( ALCcontext *context );
184 ALC_API void ALC_APIENTRY alcProcessContext( ALCcontext *context );
186 ALC_API void ALC_APIENTRY alcSuspendContext( ALCcontext *context );
188 ALC_API void ALC_APIENTRY alcDestroyContext( ALCcontext *context );
190 ALC_API ALCcontext * ALC_APIENTRY alcGetCurrentContext( void );
192 ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice( ALCcontext *context );
196 * Device Management
198 ALC_API ALCdevice * ALC_APIENTRY alcOpenDevice( const ALCchar *devicename );
200 ALC_API ALCboolean ALC_APIENTRY alcCloseDevice( ALCdevice *device );
204 * Error support.
205 * Obtain the most recent Context error
207 ALC_API ALCenum ALC_APIENTRY alcGetError( ALCdevice *device );
211 * Extension support.
212 * Query for the presence of an extension, and obtain any appropriate
213 * function pointers and enum values.
215 ALC_API ALCboolean ALC_APIENTRY alcIsExtensionPresent( ALCdevice *device, const ALCchar *extname );
217 ALC_API void * ALC_APIENTRY alcGetProcAddress( ALCdevice *device, const ALCchar *funcname );
219 ALC_API ALCenum ALC_APIENTRY alcGetEnumValue( ALCdevice *device, const ALCchar *enumname );
223 * Query functions
225 ALC_API const ALCchar * ALC_APIENTRY alcGetString( ALCdevice *device, ALCenum param );
227 ALC_API void ALC_APIENTRY alcGetIntegerv( ALCdevice *device, ALCenum param, ALCsizei size, ALCint *data );
231 * Capture functions
233 ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice( const ALCchar *devicename, ALCuint frequency, ALCenum format, ALCsizei buffersize );
235 ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice( ALCdevice *device );
237 ALC_API void ALC_APIENTRY alcCaptureStart( ALCdevice *device );
239 ALC_API void ALC_APIENTRY alcCaptureStop( ALCdevice *device );
241 ALC_API void ALC_APIENTRY alcCaptureSamples( ALCdevice *device, ALCvoid *buffer, ALCsizei samples );
244 * Pointer-to-function types, useful for dynamically getting ALC entry points.
246 typedef ALCcontext * (ALC_APIENTRY *LPALCCREATECONTEXT) (ALCdevice *device, const ALCint *attrlist);
247 typedef ALCboolean (ALC_APIENTRY *LPALCMAKECONTEXTCURRENT)( ALCcontext *context );
248 typedef void (ALC_APIENTRY *LPALCPROCESSCONTEXT)( ALCcontext *context );
249 typedef void (ALC_APIENTRY *LPALCSUSPENDCONTEXT)( ALCcontext *context );
250 typedef void (ALC_APIENTRY *LPALCDESTROYCONTEXT)( ALCcontext *context );
251 typedef ALCcontext * (ALC_APIENTRY *LPALCGETCURRENTCONTEXT)( void );
252 typedef ALCdevice * (ALC_APIENTRY *LPALCGETCONTEXTSDEVICE)( ALCcontext *context );
253 typedef ALCdevice * (ALC_APIENTRY *LPALCOPENDEVICE)( const ALCchar *devicename );
254 typedef ALCboolean (ALC_APIENTRY *LPALCCLOSEDEVICE)( ALCdevice *device );
255 typedef ALCenum (ALC_APIENTRY *LPALCGETERROR)( ALCdevice *device );
256 typedef ALCboolean (ALC_APIENTRY *LPALCISEXTENSIONPRESENT)( ALCdevice *device, const ALCchar *extname );
257 typedef void * (ALC_APIENTRY *LPALCGETPROCADDRESS)(ALCdevice *device, const ALCchar *funcname );
258 typedef ALCenum (ALC_APIENTRY *LPALCGETENUMVALUE)(ALCdevice *device, const ALCchar *enumname );
259 typedef const ALCchar* (ALC_APIENTRY *LPALCGETSTRING)( ALCdevice *device, ALCenum param );
260 typedef void (ALC_APIENTRY *LPALCGETINTEGERV)( ALCdevice *device, ALCenum param, ALCsizei size, ALCint *dest );
261 typedef ALCdevice * (ALC_APIENTRY *LPALCCAPTUREOPENDEVICE)( const ALCchar *devicename, ALCuint frequency, ALCenum format, ALCsizei buffersize );
262 typedef ALCboolean (ALC_APIENTRY *LPALCCAPTURECLOSEDEVICE)( ALCdevice *device );
263 typedef void (ALC_APIENTRY *LPALCCAPTURESTART)( ALCdevice *device );
264 typedef void (ALC_APIENTRY *LPALCCAPTURESTOP)( ALCdevice *device );
265 typedef void (ALC_APIENTRY *LPALCCAPTURESAMPLES)( ALCdevice *device, ALCvoid *buffer, ALCsizei samples );
267 #if defined(TARGET_OS_MAC) && TARGET_OS_MAC
268 #pragma export off
269 #endif
271 #if defined(__cplusplus)
273 #endif
275 #endif /* AL_ALC_H */