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/*
* openal-info: Display information about ALC and AL.
*
* Idea based on glxinfo for OpenGL.
* Initial OpenAL version by Erik Hofman <erik@ehofman.com>.
* Further hacked by Sven Panne <sven.panne@aedion.de>.
*
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include "AL/alc.h"
#include "AL/al.h"
#include "AL/alext.h"
static const int indentation = 4;
static const int maxmimumWidth = 79;
static void printChar(int c, int *width)
{
putchar(c);
*width = ((c == '\n') ? 0 : ((*width) + 1));
}
static void indent(int *width)
{
int i;
for(i = 0; i < indentation; i++)
printChar(' ', width);
}
static void printExtensions(const char *header, char separator, const char *extensions)
{
int width = 0, start = 0, end = 0;
printf("%s:\n", header);
if(extensions == NULL || extensions[0] == '\0')
return;
indent(&width);
while (1)
{
if(extensions[end] == separator || extensions[end] == '\0')
{
if(width + end - start + 2 > maxmimumWidth)
{
printChar('\n', &width);
indent(&width);
}
while(start < end)
{
printChar(extensions[start], &width);
start++;
}
if(extensions[end] == '\0')
break;
start++;
end++;
if(extensions[end] == '\0')
break;
printChar(',', &width);
printChar(' ', &width);
}
end++;
}
printChar('\n', &width);
}
static void die(const char *kind, const char *description)
{
fprintf(stderr, "%s error %s occured\n", kind, description);
exit(EXIT_FAILURE);
}
static void checkForErrors(void)
{
{
ALCdevice *device = alcGetContextsDevice(alcGetCurrentContext());
ALCenum error = alcGetError(device);
if(error != ALC_NO_ERROR)
die("ALC", (const char*)alcGetString(device, error));
}
{
ALenum error = alGetError();
if(error != AL_NO_ERROR)
die("AL", (const char*)alGetString(error));
}
}
static void printDevices(ALCenum which, const char *kind)
{
const char *s = alcGetString(NULL, which);
checkForErrors();
printf("Available %sdevices:\n", kind);
while(*s != '\0')
{
printf(" %s\n", s);
while(*s++ != '\0')
;
}
}
static void printALCInfo (void)
{
ALCint major, minor;
ALCdevice *device;
if(alcIsExtensionPresent(NULL, (const ALCchar*)"ALC_ENUMERATION_EXT") == AL_TRUE)
{
if(alcIsExtensionPresent(NULL, (const ALCchar*)"ALC_ENUMERATE_ALL_EXT") == AL_TRUE)
printDevices(ALC_ALL_DEVICES_SPECIFIER, "playback ");
else
printDevices(ALC_DEVICE_SPECIFIER, "playback ");
printDevices(ALC_CAPTURE_DEVICE_SPECIFIER, "capture ");
}
else
printf("No device enumeration available\n");
device = alcGetContextsDevice(alcGetCurrentContext());
checkForErrors();
printf("Default device: %s\n",
alcGetString(device, ALC_DEFAULT_DEVICE_SPECIFIER));
printf("Default capture device: %s\n",
alcGetString(device, ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER));
alcGetIntegerv(device, ALC_MAJOR_VERSION, 1, &major);
alcGetIntegerv(device, ALC_MAJOR_VERSION, 1, &minor);
checkForErrors();
printf("ALC version: %d.%d\n", (int)major, (int)minor);
printExtensions("ALC extensions", ' ',
alcGetString(device, ALC_EXTENSIONS));
checkForErrors();
}
static void printALInfo(void)
{
printf("OpenAL vendor string: %s\n", alGetString(AL_VENDOR));
printf("OpenAL renderer string: %s\n", alGetString(AL_RENDERER));
printf("OpenAL version string: %s\n", alGetString(AL_VERSION));
printExtensions("OpenAL extensions", ' ', alGetString(AL_EXTENSIONS));
checkForErrors();
}
int main()
{
ALCdevice *device = alcOpenDevice(NULL);
ALCcontext *context = alcCreateContext(device, NULL);
alcMakeContextCurrent(context);
checkForErrors();
printALCInfo();
printALInfo();
checkForErrors();
alcMakeContextCurrent(NULL);
alcDestroyContext(context);
alcCloseDevice(device);
return EXIT_SUCCESS;
}
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