CODEWITHSUNDEEP
c++openal
Colin DeClue
Colin DeClue

Reputation: 2244

Trying to play something in OpenAL, but it never gets out of the AL_INITIAL state

I'm attempting to play an audio file using OpenAl, but it's not actually playing anything. When I check if the audio file is playing after calling alSourcePlay, the state is still AL_INITIAL.

Here's where I play the audio:

// Make sure the audio source ident is valid and usable
if ( audioID >= MAX_AUDIO_SOURCES || !mAudioSourceInUse[audioID])
    return false;

int sourceAudioState = 0;

if(!alIsSource(mAudioSources[audioID]) == AL_TRUE) return false;

alGetError();
// Are we currently playing the audio source?
alGetSourcei( mAudioSources[audioID], AL_SOURCE_STATE, &sourceAudioState );

if ( sourceAudioState == AL_PLAYING )
{
    printf("Currently playing!\n");
    if ( forceRestart )
        stopAudio( audioID );
    else
        return false; // Not forced, so we don't do anything
}
alSourcePlay( mAudioSources[ audioID ] );
if ( checkALError( "playAudio::alSourcePlay: ") )
    return false;
alGetSourcei( mAudioSources[audioID], AL_SOURCE_STATE, &sourceAudioState );
printState(sourceAudioState);
if(sourceAudioState == AL_PLAYING)
{
    printf("Now playing!\n\n");
}
return true;

mAudioSources is an array of buffers created by alGenBuffers. The file is loaded with 

mAudioBuffers[bufferID] = alutCreateBufferFromFile(filename.c_str());

Which doesn't cause an error in alGetError. Any ideas?

Upvotes: 1

Views: 1816

Answers (1)

Friedrich
Friedrich

Reputation: 4817

alutCreateBufferFromFile will not cause an error in alGetError. You have to use alutGetError (note the prefix alut instead of al) instead. If alutCreateBufferFromFile fails, it will return AL_NONE which is a valid buffer: the NULL buffer which will not be played.

Check the ALUT documentation for information on alutGetError as well as the OpenAL Specs.

Upvotes: 3

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