Re: Attempting to use OpenAL in C++ for a video game

Hi.

On Sunday, May 01, 2011 7:44:55 PM Colin DeClue wrote:
> // Create the Audio Buffers
> alGenBuffers( MAX_AUDIO_BUFFERS, mAudioBuffers );
[...]
> mAudioBuffers[bufferID] = alutCreateBufferFromFile(filename.c_str());

You're leaking buffers, here. The buffer IDs are first generated and stored by 
alGenBuffers, and are then overwritten by the return value of 
alutCreateBufferFromFile, which is a new buffer ID. If you're using 
alutCreateBufferFromFile to load your sounds, there's no need for the 
alGenBuffers (just make sure the buffer IDs are initialized to 0, instead of 
leaving the array filled with random memory).

> mAudioBuffers[bufferID] = alutCreateBufferFromFile(filename.c_str());
> if ( checkALError("loadWAV::alutCreateBufferFromFile: ") )
> return false;

That's not the right way to check for Alut errors. The function will return 0 
if loading fails, it doesn't generate an AL error.

Make sure the filename being given to Alut is correct (print it out somewhere 
right before calling to verify), if you can. Also, make sure the sounds are 
normal PCM wave. Alut doesn't handle MP3 or Ogg or anything fancy like that 
(wav files can have MP3, or other compressed formats, sometimes).


If you're still having trouble, please write back.
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