examples/alhelpers.h

   1 #ifndef ALHELPERS_H
   2 #define ALHELPERS_H
   3
   4 #ifndef _WIN32
   5 #include <unistd.h>
   6 #define Sleep(x) usleep((x)*1000)
   7 #else
   8 #define WIN32_LEAN_AND_MEAN
   9 #include <windows.h>
  10 #endif
  11
  12 #ifdef __cplusplus
  13 extern "C" {
  14 #endif /* __cplusplus */
  15
  16 /* Some helper functions to get the name from the channel and type enums. */
  17 const char *ChannelsName(ALenum chans);
  18 const char *TypeName(ALenum type);
  19
  20 /* Helpers to convert frame counts and byte lengths. */
  21 ALsizei FramesToBytes(ALsizei size, ALenum channels, ALenum type);
  22 ALsizei BytesToFrames(ALsizei size, ALenum channels, ALenum type);
  23
  24 /* Retrieves a compatible buffer format given the channel configuration and
  25  * sample type. If an alIsBufferFormatSupportedSOFT-compatible function is
  26  * provided, it will be called to find the closest-matching format from
  27  * AL_SOFT_buffer_samples. Returns AL_NONE (0) if no supported format can be
  28  * found. */
  29 ALenum GetFormat(ALenum channels, ALenum type, LPALISBUFFERFORMATSUPPORTEDSOFT palIsBufferFormatSupportedSOFT);
  30
  31 /* Loads samples into a buffer using the standard alBufferData call, but with a
  32  * LPALBUFFERSAMPLESSOFT-compatible prototype. Assumes internalformat is valid
  33  * for alBufferData, and that channels and type match it. */
  34 void AL_APIENTRY wrap_BufferSamples(ALuint buffer, ALuint samplerate,
  35                                     ALenum internalformat, ALsizei samples,
  36                                     ALenum channels, ALenum type,
  37                                     const ALvoid *data);
  38
  39 /* Easy device init/deinit functions. InitAL returns 0 on success. */
  40 int InitAL(void);
  41 void CloseAL(void);
  42
  43 #ifdef __cplusplus
  44 }
  45 #endif /* __cplusplus */
  46
  47 #endif /* ALHELPERS_H */