OpenAL32/Include/alMain.h

   1 #ifndef AL_MAIN_H
   2 #define AL_MAIN_H
   3
   4 #include <string.h>
   5 #include <stdio.h>
   6 #include <stdarg.h>
   7
   8 #ifdef HAVE_FENV_H
   9 #include <fenv.h>
  10 #endif
  11
  12 #include "AL/al.h"
  13 #include "AL/alc.h"
  14 #include "AL/alext.h"
  15
  16 #ifdef _WIN32
  17
  18 #ifndef _WIN32_WINNT
  19 #define _WIN32_WINNT 0x0500
  20 #endif
  21 #include <windows.h>
  22
  23 #else
  24
  25 #include <assert.h>
  26 #include <pthread.h>
  27 #ifdef HAVE_PTHREAD_NP_H
  28 #include <pthread_np.h>
  29 #endif
  30 #include <sys/time.h>
  31 #include <time.h>
  32 #include <errno.h>
  33
  34 #define IsBadWritePtr(a,b) (0)
  35
  36 typedef pthread_mutex_t CRITICAL_SECTION;
  37 static inline void EnterCriticalSection(CRITICAL_SECTION *cs)
  38 {
  39     int ret;
  40     ret = pthread_mutex_lock(cs);
  41     assert(ret == 0);
  42 }
  43 static inline void LeaveCriticalSection(CRITICAL_SECTION *cs)
  44 {
  45     int ret;
  46     ret = pthread_mutex_unlock(cs);
  47     assert(ret == 0);
  48 }
  49 static inline void InitializeCriticalSection(CRITICAL_SECTION *cs)
  50 {
  51     pthread_mutexattr_t attrib;
  52     int ret;
  53
  54     ret = pthread_mutexattr_init(&attrib);
  55     assert(ret == 0);
  56
  57     ret = pthread_mutexattr_settype(&attrib, PTHREAD_MUTEX_RECURSIVE);
  58 #ifdef HAVE_PTHREAD_NP_H
  59     if(ret != 0)
  60         ret = pthread_mutexattr_setkind_np(&attrib, PTHREAD_MUTEX_RECURSIVE);
  61 #endif
  62     assert(ret == 0);
  63     ret = pthread_mutex_init(cs, &attrib);
  64     assert(ret == 0);
  65
  66     pthread_mutexattr_destroy(&attrib);
  67 }
  68
  69 static inline void DeleteCriticalSection(CRITICAL_SECTION *cs)
  70 {
  71     int ret;
  72     ret = pthread_mutex_destroy(cs);
  73     assert(ret == 0);
  74 }
  75
  76 /* NOTE: This wrapper isn't quite accurate as it returns an ALuint, as opposed
  77  * to the expected DWORD. Both are defined as unsigned 32-bit types, however.
  78  * Additionally, Win32 is supposed to measure the time since Windows started,
  79  * as opposed to the actual time. */
  80 static inline ALuint timeGetTime(void)
  81 {
  82     struct timeval tv;
  83     int ret;
  84
  85     ret = gettimeofday(&tv, NULL);
  86     assert(ret == 0);
  87
  88     return tv.tv_usec/1000 + tv.tv_sec*1000;
  89 }
  90
  91 static inline void Sleep(ALuint t)
  92 {
  93     struct timespec tv, rem;
  94     tv.tv_nsec = (t*1000000)%1000000000;
  95     tv.tv_sec = t/1000;
  96
  97     while(nanosleep(&tv, &rem) == -1 && errno == EINTR)
  98         tv = rem;
  99 }
 100 #define min(x,y) (((x)<(y))?(x):(y))
 101 #define max(x,y) (((x)>(y))?(x):(y))
 102 #endif
 103
 104 #include "alListener.h"
 105 #include "alu.h"
 106
 107 #ifdef __cplusplus
 108 extern "C" {
 109 #endif
 110
 111 static __inline void al_print(const char *fname, unsigned int line, const char *fmt, ...)
 112 {
 113     const char *fn;
 114     char str[256];
 115     int i;
 116
 117     fn = strrchr(fname, '/');
 118     if(!fn) fn = strrchr(fname, '\\');;
 119     if(!fn) fn = fname;
 120     else fn += 1;
 121
 122     i = snprintf(str, sizeof(str), "AL lib: %s:%d: ", fn, line);
 123     if(i < (int)sizeof(str) && i > 0)
 124     {
 125         va_list ap;
 126         va_start(ap, fmt);
 127         vsnprintf(str+i, sizeof(str)-i, fmt, ap);
 128         va_end(ap);
 129     }
 130     str[sizeof(str)-1] = 0;
 131
 132     fprintf(stderr, "%s", str);
 133 }
 134 #define AL_PRINT(...) al_print(__FILE__, __LINE__, __VA_ARGS__)
 135
 136
 137 #define SWMIXER_OUTPUT_RATE        44100
 138
 139 #define SPEEDOFSOUNDMETRESPERSEC   (343.3f)
 140 #define AIRABSORBGAINDBHF          (-0.05f)
 141
 142 #define LOWPASSFREQCUTOFF          (5000)
 143
 144 #define QUADRANT_NUM 128
 145 #define LUT_NUM (4 * QUADRANT_NUM)
 146
 147
 148 typedef struct {
 149     ALCboolean (*OpenPlayback)(ALCdevice*, const ALCchar*);
 150     void (*ClosePlayback)(ALCdevice*);
 151     ALCboolean (*StartContext)(ALCdevice*, ALCcontext*);
 152     void (*StopContext)(ALCdevice*, ALCcontext*);
 153
 154     ALCboolean (*OpenCapture)(ALCdevice*, const ALCchar*);
 155     void (*CloseCapture)(ALCdevice*);
 156     void (*StartCapture)(ALCdevice*);
 157     void (*StopCapture)(ALCdevice*);
 158     void (*CaptureSamples)(ALCdevice*, void*, ALCuint);
 159     ALCuint (*AvailableSamples)(ALCdevice*);
 160 } BackendFuncs;
 161
 162 void alc_alsa_init(BackendFuncs *func_list);
 163 void alc_oss_init(BackendFuncs *func_list);
 164 void alc_solaris_init(BackendFuncs *func_list);
 165 void alcDSoundInit(BackendFuncs *func_list);
 166 void alcWinMMInit(BackendFuncs *FuncList);
 167 void alc_pa_init(BackendFuncs *func_list);
 168 void alc_wave_init(BackendFuncs *func_list);
 169 void alc_pulse_init(BackendFuncs *func_list);
 170
 171
 172 struct ALCdevice_struct
 173 {
 174     ALboolean    IsCaptureDevice;
 175
 176     ALuint       Frequency;
 177     ALuint       UpdateSize;
 178     ALuint       BufferSize;
 179     ALenum       Format;
 180
 181     ALCchar      *szDeviceName;
 182
 183     // Maximum number of sources that can be created
 184     ALuint       MaxNoOfSources;
 185     // Maximum number of slots that can be created
 186     ALuint       AuxiliaryEffectSlotMax;
 187
 188     ALint        lNumMonoSources;
 189     ALint        lNumStereoSources;
 190     ALuint       NumAuxSends;
 191
 192     // Context created on this device
 193     ALCcontext   *Context;
 194
 195     BackendFuncs *Funcs;
 196     void         *ExtraData; // For the backend's use
 197
 198     ALCdevice *next;
 199 };
 200
 201 #define ALCdevice_OpenPlayback(a,b)      ((a)->Funcs->OpenPlayback((a), (b)))
 202 #define ALCdevice_ClosePlayback(a)       ((a)->Funcs->ClosePlayback((a)))
 203 #define ALCdevice_StartContext(a,b)      ((a)->Funcs->StartContext((a), (b)))
 204 #define ALCdevice_StopContext(a,b)       ((a)->Funcs->StopContext((a), (b)))
 205 #define ALCdevice_OpenCapture(a,b)       ((a)->Funcs->OpenCapture((a), (b)))
 206 #define ALCdevice_CloseCapture(a)        ((a)->Funcs->CloseCapture((a)))
 207 #define ALCdevice_StartCapture(a)        ((a)->Funcs->StartCapture((a)))
 208 #define ALCdevice_StopCapture(a)         ((a)->Funcs->StopCapture((a)))
 209 #define ALCdevice_CaptureSamples(a,b,c)  ((a)->Funcs->CaptureSamples((a), (b), (c)))
 210 #define ALCdevice_AvailableSamples(a)    ((a)->Funcs->AvailableSamples((a)))
 211
 212 struct ALCcontext_struct
 213 {
 214     ALlistener  Listener;
 215
 216     struct ALsource *Source;
 217     ALuint           SourceCount;
 218
 219     struct ALeffectslot *AuxiliaryEffectSlot;
 220     ALuint               AuxiliaryEffectSlotCount;
 221
 222     ALenum      LastError;
 223     ALboolean   InUse;
 224
 225     ALuint      Frequency;
 226
 227     ALenum      DistanceModel;
 228
 229     ALfloat     DopplerFactor;
 230     ALfloat     DopplerVelocity;
 231     ALfloat     flSpeedOfSound;
 232
 233     ALfloat     PanningLUT[OUTPUTCHANNELS * LUT_NUM];
 234     ALint       NumChan;
 235
 236     ALfloat     ChannelMatrix[OUTPUTCHANNELS][OUTPUTCHANNELS];
 237
 238     ALCdevice  *Device;
 239     const ALCchar *ExtensionList;
 240
 241     struct bs2b *bs2b;
 242
 243     ALCcontext *next;
 244 };
 245
 246 ALCvoid ReleaseALC(ALCvoid);
 247
 248 ALCchar *AppendDeviceList(char *name);
 249 ALCchar *AppendAllDeviceList(char *name);
 250 ALCchar *AppendCaptureDeviceList(char *name);
 251
 252 ALCvoid SetALCError(ALenum errorCode);
 253
 254 ALCvoid SuspendContext(ALCcontext *context);
 255 ALCvoid ProcessContext(ALCcontext *context);
 256
 257 ALvoid *StartThread(ALuint (*func)(ALvoid*), ALvoid *ptr);
 258 ALuint StopThread(ALvoid *thread);
 259
 260 typedef struct RingBuffer RingBuffer;
 261 RingBuffer *CreateRingBuffer(ALsizei frame_size, ALsizei length);
 262 void DestroyRingBuffer(RingBuffer *ring);
 263 ALsizei RingBufferSize(RingBuffer *ring);
 264 void WriteRingBuffer(RingBuffer *ring, const ALubyte *data, ALsizei len);
 265 void ReadRingBuffer(RingBuffer *ring, ALubyte *data, ALsizei len);
 266
 267 void ReadALConfig(void);
 268 void FreeALConfig(void);
 269 const char *GetConfigValue(const char *blockName, const char *keyName, const char *def);
 270 int GetConfigValueInt(const char *blockName, const char *keyName, int def);
 271 float GetConfigValueFloat(const char *blockName, const char *keyName, float def);
 272
 273 #ifdef __cplusplus
 274 }
 275 #endif
 276
 277 #endif