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Added a couple more OpenAL error checks

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This commit is contained in:
Nicolay Korslund 2010-08-13 14:11:05 +02:00
parent 86a811c736
commit f3fa05ba2f
1 changed files with 19 additions and 1 deletions
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20
sound/outputs/openal_out.cpp
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@ -11,11 +11,23 @@ using namespace Mangle::Sound;
static void fail(const std::string &msg)
{ throw str_exception("OpenAL exception: " + msg); }
static void checkALError(const std::string &msg)
/*
Check for AL error. Since we're always calling this with string
literals, and it only makes sense to optimize for the non-error
case, the parameter is const char* rather than std::string.
This way we don't force the compiler to create a string object each
time we're called (since the string is never used unless there's an
error), although a good compiler might have optimized that away in
any case.
*/
static void checkALError(const char *where)
{
ALenum err = alGetError();
if(err != AL_NO_ERROR)
{
std::string msg = where;
const ALchar* errmsg = alGetString(err);
if(errmsg)
fail("\"" + std::string(alGetString(err)) + "\" while " + msg);
@ -154,7 +166,9 @@ OpenAL_Sound::OpenAL_Sound(ALuint buf, int *ref)
// Create a source
alGenSources(1, &inst);
checkALError("creating instance (clone)");
alSourcei(inst, AL_BUFFER, bufferID);
checkALError("assigning buffer (clone)");
}
// Constructor used for original (non-cloned) sounds
@ -166,6 +180,7 @@ OpenAL_Sound::OpenAL_Sound(SampleSourcePtr input)
// Set up the OpenAL buffer
alGenBuffers(1, &bufferID);
checkALError("generating buffer");
assert(bufferID != 0);
// Does the stream support pointer operations?
@ -187,7 +202,9 @@ OpenAL_Sound::OpenAL_Sound(SampleSourcePtr input)
// Create a source
alGenSources(1, &inst);
checkALError("creating source");
alSourcei(inst, AL_BUFFER, bufferID);
checkALError("assigning buffer");
// Create a cheap reference counter for the buffer
refCnt = new int;
@ -208,6 +225,7 @@ OpenAL_Sound::~OpenAL_Sound()
// We're the last owner. Delete the buffer and the counter
// itself.
alDeleteBuffers(1, &bufferID);
checkALError("deleting buffer");
delete refCnt;
}
}