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flightgear/tests/alcinfo.cxx
ehofman 0dc35c8d38 John Denker: 
Suggestion:  It might be helpful to promote each of
 the .c files to .cxx.

 Rationale:
 -- The configure/makefile system handles CFLAGS
    differently from CXXFLAGS.
 -- It is important for the *info programs to
    compiled and run in exactly the same environment
    as the main fgfs program.  Some users depend on
    compiler or linker flags such as rpath that
    strongly affect the results of the *info programs.
 -- There is no downside;  you code compiles just
    fine as-is under the c++ compiler.

second part of the original commit, for ehofman/sound
2009-12-09 08:15:37 +01:00

341 lines
7.6 KiB
C++
Raw Blame History

/* -*- mode: C; tab-width:8; c-basic-offset:8 -*-
* vi:set ts=8:
*
* alcinfo.x
*
* alcinfo display info about a ALC extension and OpenAL renderer
*
* This file is in the Public Domain and comes with no warranty.
* Erik Hofman <erik@ehofman.com>
*
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef __APPLE__
# include <OpenAL/al.h>
# include <OpenAL/alc.h>
#else
# include <AL/al.h>
# include <AL/alc.h>
# include <AL/alext.h>
#endif
#ifndef AL_VERSION_1_1
# ifdef __APPLE__
# include <OpenAL/altypes.h>
# include <OpenAL/alctypes.h>
#else
# include <AL/altypes.h>
# include <AL/alctypes.h>
# endif
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <string>
using std::string;
#ifndef ALC_ALL_DEVICES_SPECIFIER
# define ALC_ALL_DEVICES_SPECIFIER 0x1013
#endif
#define MAX_DATA 16
static const int indentation = 4;
static const int maxmimumWidth = 79;
void printExtensions (const char *, char, const char *);
void displayDevices(const char *, const char *);
char *getDeviceName(int, char **);
void testForError(void *, const string&);
void testForALCError(ALCdevice *);
int main(int argc, char **argv)
{
ALCint data[MAX_DATA];
ALCdevice *device = NULL;
ALCcontext *context = NULL;
ALenum error;
char *s;
if (alcIsExtensionPresent(NULL, "ALC_enumeration_EXT") == AL_TRUE)
{
if (alcIsExtensionPresent(NULL, "ALC_enumerate_all_EXT") == AL_FALSE)
s = (char *)alcGetString(NULL, ALC_DEVICE_SPECIFIER);
else
s = (char *)alcGetString(NULL, ALC_ALL_DEVICES_SPECIFIER);
displayDevices("output", s);
s = (char *)alcGetString(NULL, ALC_CAPTURE_DEVICE_SPECIFIER);
displayDevices("input", s);
}
s = getDeviceName(argc, argv);
device = alcOpenDevice(s);
testForError(device, "Audio device not available.");
context = alcCreateContext(device, NULL);
testForError(context, "Unable to create a valid context.");
alcMakeContextCurrent(context);
testForALCError(device);
s = (char *)alcGetString(device, ALC_DEFAULT_DEVICE_SPECIFIER);
printf("default output device: %s\n", s);
testForALCError(device);
error = alcIsExtensionPresent(device, "ALC_EXT_capture");
if (error)
{
s = (char *)alcGetString(device, ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER);
printf("default input device: %s\n", s);
testForALCError(device);
}
printf("capture support: %s\n", (error) ? "yes" : "no");
alcGetIntegerv(device, ALC_FREQUENCY, 1, data);
printf("mixer frequency: %u hz\n", data[0]);
testForALCError(device);
alcGetIntegerv(device, ALC_REFRESH, 1, data+1);
printf("refresh rate : %u hz\n", data[0]/data[1]);
testForALCError(device);
data[0] = 0;
alcGetIntegerv(device, ALC_MONO_SOURCES, 1, data);
error = alcGetError(device);
if (error == AL_NONE) {
printf("supported sources; mono: %u, ", data[0]);
data[0] = 0;
alcGetIntegerv(device, ALC_STEREO_SOURCES, 1, data);
printf("stereo: %u\n", data[0]);
testForALCError(device);
}
printf("ALC version: ");
alcGetIntegerv(device, ALC_MAJOR_VERSION, 1, data);
printf("%i.", *data);
alcGetIntegerv(device, ALC_MINOR_VERSION, 1, data);
printf("%i\n", *data);
testForALCError(device);
s = (char *)alcGetString(device, ALC_EXTENSIONS);
printExtensions ("ALC extensions", ' ', s);
testForALCError(device);
s = (char *)alGetString(AL_VENDOR);
error = alGetError();
if ((error = alGetError()) != AL_NO_ERROR)
printf("Error #%x: %s\n", error, alGetString(error));
else
printf("OpenAL vendor string: %s\n", s);
s = (char *)alGetString(AL_RENDERER);
if ((error = alGetError()) != AL_NO_ERROR)
printf("Error #%x: %s\n", error, alGetString(error));
else
printf("OpenAL renderer string: %s\n", s);
s = (char *)alGetString(AL_VERSION);
if ((error = alGetError()) != AL_NO_ERROR)
printf("Error #%x: %s\n", error, alGetString(error));
else if (!s)
printf("Quering AL_VERSION returned NULL pointer!\n");
else
printf("OpenAL version string: %s\n", s);
s = (char *)alGetString(AL_EXTENSIONS);
printExtensions ("OpenAL extensions", ' ', s);
testForALCError(device);
/* alut testing mechanism */
context = alcGetCurrentContext();
if (context == NULL)
{
printf("Error: no current context\n");
}
else
{
if (alGetError () != AL_NO_ERROR)
{
printf("Alert: AL error on entry\n");
}
else
{
if (alcGetError (alcGetContextsDevice (context)) != ALC_NO_ERROR)
{
printf("Alert: ALC error on entry\n");
}
}
}
/* end of alut test */
if (alcMakeContextCurrent(NULL) == 0)
printf("alcMakeContextCurrent failed.\n");
device = alcGetContextsDevice(context);
alcDestroyContext(context);
testForALCError(device);
if (alcCloseDevice(device) == 0)
printf("alcCloseDevice failed.\n");
return 0;
}
/* -------------------------------------------------------------------------- */
void
printChar (int c, int *width)
{
putchar (c);
*width = (c == '\n') ? 0 : (*width + 1);
}
void
indent (int *width)
{
int i;
for (i = 0; i < indentation; i++)
{
printChar (' ', width);
}
}
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);
}
char *
getCommandLineOption(int argc, char **argv, const string& option)
{
int slen = option.size();
char *rv = 0;
int i;
for (i=0; i<argc; i++)
{
if (strncmp(argv[i], option.c_str(), slen) == 0)
{
i++;
if (i<argc) rv = argv[i];
}
}
return rv;
}
char *
getDeviceName(int argc, char **argv)
{
static char devname[255];
int len = 255;
char *s;
s = getCommandLineOption(argc, argv, "-d");
if (s)
{
strncpy((char *)&devname, s, len);
len -= strlen(s);
s = getCommandLineOption(argc, argv, "-r");
if (s)
{
strncat((char *)&devname, " on ", len);
len -= 4;
strncat((char *)&devname, s, len);
}
s = (char *)&devname;
}
return s;
}
void
displayDevices(const char *type, const char *list)
{
ALCchar *ptr, *nptr;
ptr = (ALCchar *)list;
printf("list of all available %s devices:\n", type);
if (!list)
{
printf("none\n");
}
else
{
nptr = ptr;
while (*(nptr += strlen(ptr)+1) != 0)
{
printf(" %s\n", ptr);
ptr = nptr;
}
printf(" %s\n", ptr);
}
}
void
testForError(void *p, const string& s)
{
if (p == NULL)
{
printf("\nError: %s\n\n", s.c_str());
exit(-1);
}
}
void
testForALCError(ALCdevice *device)
{
ALenum error;
error = alcGetError(device);
if (error != ALC_NO_ERROR)
printf("\nALC Error %x occurred: %s\n", error, alcGetString(device, error));
}
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