void SimpleAudioEngine::playBackgroundMusic(const char* pszFilePath, bool bLoop)
{
// If there is already a background music source we stop it first
if (s_backgroundSource != AL_NONE)
stopBackgroundMusic(false);
// Changing file path to full path
std::string fullPath = FileUtils::getInstance()->fullPathForFilename(pszFilePath);
BackgroundMusicsMap::const_iterator it = s_backgroundMusics.find(fullPath);
if (it == s_backgroundMusics.end())
{
preloadBackgroundMusic(fullPath.c_str());
it = s_backgroundMusics.find(fullPath);
}
if (it != s_backgroundMusics.end())
{
s_backgroundSource = it->second->source;
alSourcei(s_backgroundSource, AL_LOOPING, bLoop ? AL_TRUE : AL_FALSE);
setBackgroundVolume(s_volume);
alSourcePlay(s_backgroundSource);
checkALError("playBackgroundMusic:alSourcePlay");
}
}
void SimpleAudioEngine::setBackgroundMusicVolume(float volume)
{
if (s_volume != volume && volume >= -0.0001 && volume <= 1.0001)
{
s_volume = volume;
setBackgroundVolume(volume);
}
}
void SimpleAudioEngine::setBackgroundMusicVolume(float volume)
{
if (s_volume != volume && volume >= -0.0001 && volume <= 1.0001)
{
s_volume = volume;
// No source, no background music, no volume adjustment
if (s_backgroundSource != AL_NONE)
{
setBackgroundVolume(volume);
}
}
}
//
// background audio (using mmrenderer)
//
void SimpleAudioEngine::preloadBackgroundMusic(const char* pszFilePath)
{
if (!s_isBackgroundInitialized)
{
const char *mmrname = NULL;
const char *ctxtname = "mmrplayer";
char cwd[PATH_MAX];
mode_t mode = S_IRUSR | S_IXUSR;
getcwd(cwd, PATH_MAX);
string path = "file://";
path += cwd;
path += "/";
path += pszFilePath;
s_mmrConnection = mmr_connect(mmrname);
if (!s_mmrConnection)
{
perror("mmr_connect");
s_hasMMRError = true;
return;
}
s_mmrContext = mmr_context_create(s_mmrConnection, ctxtname, 0, mode);
if (!s_mmrContext)
{
perror(ctxtname);
s_hasMMRError = true;
return;
}
if ((s_audioOid = mmr_output_attach(s_mmrContext, "audio:default", "audio")) < 0)
{
mmrerror(s_mmrContext, "audio:default");
return;
}
if (mmr_input_attach(s_mmrContext, path.data(), "autolist") < 0)
{
fprintf(stderr, "unable to load %s\n", path.data());
mmrerror(s_mmrContext, path.data());
return;
}
s_currentBackgroundStr = pszFilePath;
s_isBackgroundInitialized = true;
setBackgroundVolume(s_volume);
}
}
