4 // This is broken, but allows the file to compile without a POSIX
6 static unsigned int sleep(unsigned int secs) { return 0; }
8 #include <unistd.h> // sleep()
11 #if defined( __APPLE__ )
12 # define AL_ILLEGAL_ENUM AL_INVALID_ENUM
13 # define AL_ILLEGAL_COMMAND AL_INVALID_OPERATION
14 # include <OpenAL/al.h>
15 # include <OpenAL/alc.h>
16 # include <OpenAL/alut.h>
23 #define AUDIOFILE SRC_DIR"/jet.wav"
25 #include <simgear/debug/logstream.hxx>
27 static void print_openal_error( ALuint error ) {
28 if ( error == AL_INVALID_NAME ) {
29 SG_LOG( SG_GENERAL, SG_ALERT, "AL_INVALID_NAME" );
30 } else if ( error == AL_ILLEGAL_ENUM ) {
31 SG_LOG( SG_GENERAL, SG_ALERT, "AL_ILLEGAL_ENUM" );
32 } else if ( error == AL_INVALID_VALUE ) {
33 SG_LOG( SG_GENERAL, SG_ALERT, "AL_INVALID_VALUE" );
34 } else if ( error == AL_ILLEGAL_COMMAND ) {
35 SG_LOG( SG_GENERAL, SG_ALERT, "AL_ILLEGAL_COMMAND" );
36 } else if ( error == AL_OUT_OF_MEMORY ) {
37 SG_LOG( SG_GENERAL, SG_ALERT, "AL_OUT_OF_MEMORY" );
39 SG_LOG( SG_GENERAL, SG_ALERT, "Unhandled error code = " << error );
44 int main( int argc, char *argv[] ) {
50 if ( (dev = alcOpenDevice( NULL )) != NULL
51 && ( context = alcCreateContext( dev, NULL )) != NULL ) {
52 alcMakeContextCurrent( context );
55 SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
58 // Position of the listener.
59 ALfloat listener_pos[3];
61 // Velocity of the listener.
62 ALfloat listener_vel[3];
64 // Orientation of the listener. (first 3 elements are "at", second
66 ALfloat listener_ori[6];
68 listener_pos[0] = 0.0;
69 listener_pos[1] = 0.0;
70 listener_pos[2] = 0.0;
72 listener_vel[0] = 0.0;
73 listener_vel[1] = 0.0;
74 listener_vel[2] = 0.0;
76 listener_ori[0] = 0.0;
77 listener_ori[1] = 0.0;
78 listener_ori[2] = -1.0;
79 listener_ori[3] = 0.0;
80 listener_ori[4] = 1.0;
81 listener_ori[5] = 0.0;
83 alListenerfv( AL_POSITION, listener_pos );
84 alListenerfv( AL_VELOCITY, listener_vel );
85 alListenerfv( AL_ORIENTATION, listener_ori );
87 // Buffers hold sound data.
90 // Sources are points emitting sound.
93 // Position of the source sound.
94 ALfloat source_pos[3];
96 // Velocity of the source sound.
97 ALfloat source_vel[3];
99 // configuration values
104 ALboolean loop = false;
106 source_pos[0] = 0.0; source_pos[1] = 0.0; source_pos[2] = 0.0;
107 source_vel[0] = 0.0; source_vel[1] = 0.0; source_vel[2] = 0.0;
109 // create an OpenAL buffer handle
110 alGenBuffers(1, &buffer);
111 ALuint error = alGetError();
112 if ( error != AL_NO_ERROR ) {
113 print_openal_error( error );
114 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to gen OpenAL buffer." );
116 SG_LOG( SG_GENERAL, SG_ALERT, "Buffer created ok!" );
119 // Load the sample file
120 #if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
122 buffer = alutCreateBufferFromFile(AUDIOFILE);
123 if (buffer == AL_NONE) {
124 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to buffer data.");
128 # if defined (__APPLE__)
129 alutLoadWAVFile( (ALbyte *)AUDIOFILE, &format, &data, &size, &freq );
131 alutLoadWAVFile( (ALbyte *)AUDIOFILE, &format, &data, &size, &freq, &loop );
133 if (alGetError() != AL_NO_ERROR) {
134 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to load wav file.");
137 // Copy data to the internal OpenAL buffer
138 alBufferData( buffer, format, data, size, freq );
139 if (alGetError() != AL_NO_ERROR) {
140 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to buffer data.");
143 alutUnloadWAV( format, data, size, freq );
146 alGenSources(1, &source);
147 if (alGetError() != AL_NO_ERROR) {
148 print_openal_error( error );
151 alSourcei( source, AL_BUFFER, buffer );
152 alSourcef( source, AL_PITCH, 1.0 );
153 alSourcef( source, AL_GAIN, 1.0 );
154 alSourcefv( source, AL_POSITION, source_pos );
155 alSourcefv( source, AL_VELOCITY, source_vel );
156 alSourcei( source, AL_LOOPING, loop );
158 alSourcePlay( source );