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#include "alutInternal.h"
#if HAVE_NANOSLEEP && HAVE_TIME_H
#include <time.h>
#include <errno.h>
#elif HAVE_USLEEP && HAVE_UNISTD_H
#include <unistd.h>
#elif HAVE_SLEEP && HAVE_WINDOWS_H
#include <windows.h>
#else
#error No way to sleep on this platform
#endif
ALboolean
alutSleep (ALfloat duration)
{
if (duration < 0)
{
_alutSetError (ALUT_ERROR_INVALID_VALUE);
return AL_FALSE;
}
{
ALuint seconds = (ALuint) duration;
ALfloat rest = duration - (ALfloat) seconds;
#if HAVE_NANOSLEEP && HAVE_TIME_H
ALuint microSecs = (ALuint) (rest * 1000000);
struct timespec t, remainingTime;
t.tv_sec = (time_t) seconds;
t.tv_nsec = ((long) microSecs) * 1000;
/* At least the interaction of nanosleep and signals is specified! */
while (nanosleep (&t, &remainingTime) < 0)
{
if (errno != EINTR)
{
return AL_FALSE;
}
/* If we received a signal, let's try again with the remaining time. */
t.tv_sec = remainingTime.tv_sec;
t.tv_nsec = remainingTime.tv_nsec;
}
#elif HAVE_USLEEP && HAVE_UNISTD_H
while (seconds > 0)
{
usleep (1000000);
seconds--;
}
usleep ((unsigned int) (rest * 1000000));
#elif HAVE_SLEEP && HAVE_WINDOWS_H
while (seconds > 0)
{
Sleep (1000);
seconds--;
}
Sleep ((DWORD) (rest * 1000));
#endif
}
return AL_TRUE;
}
ALvoid *
_alutMalloc (size_t size)
{
ALvoid *ptr = malloc (size == 0 ? 1 : size);
if (ptr == NULL)
{
_alutSetError (ALUT_ERROR_OUT_OF_MEMORY);
}
return ptr;
}
ALboolean
_alutFormatConstruct (ALint numChannels, ALint bitsPerSample, ALenum *format)
{
switch (numChannels)
{
case 1:
switch (bitsPerSample)
{
case 8:
*format = AL_FORMAT_MONO8;
return AL_TRUE;
case 16:
*format = AL_FORMAT_MONO16;
return AL_TRUE;
}
break;
case 2:
switch (bitsPerSample)
{
case 8:
*format = AL_FORMAT_STEREO8;
return AL_TRUE;
case 16:
*format = AL_FORMAT_STEREO16;
return AL_TRUE;
}
break;
}
return AL_FALSE;
}
ALboolean
_alutFormatGetNumChannels (ALenum format, ALint *numChannels)
{
switch (format)
{
case AL_FORMAT_MONO8:
case AL_FORMAT_MONO16:
*numChannels = 1;
return AL_TRUE;
case AL_FORMAT_STEREO8:
case AL_FORMAT_STEREO16:
*numChannels = 2;
return AL_TRUE;
}
return AL_FALSE;
}
ALboolean
_alutFormatGetBitsPerSample (ALenum format, ALint *bitsPerSample)
{
switch (format)
{
case AL_FORMAT_MONO8:
case AL_FORMAT_STEREO8:
*bitsPerSample = 8;
return AL_TRUE;
case AL_FORMAT_MONO16:
case AL_FORMAT_STEREO16:
*bitsPerSample = 16;
return AL_TRUE;
}
return AL_FALSE;
}
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