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Add some comment markers to the OpenAL sound classes

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This commit is contained in:
Chris Robinson 2012-03-19 01:33:33 -07:00
parent e234b90173
commit 2c27827e4f
1 changed files with 56 additions and 45 deletions
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101
apps/openmw/mwsound/openal_output.cpp
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@ -46,33 +46,9 @@ static ALenum getALFormat(ChannelConfig chans, SampleType type)
return AL_NONE;
}
ALuint LoadBuffer(DecoderPtr decoder)
{
int srate;
ChannelConfig chans;
SampleType type;
ALenum format;
decoder->getInfo(&srate, &chans, &type);
format = getALFormat(chans, type);
std::vector<char> data(32768);
size_t got, total = 0;
while((got=decoder->read(&data[total], data.size()-total)) > 0)
{
total += got;
data.resize(total*2);
}
data.resize(total);
ALuint buf;
alGenBuffers(1, &buf);
alBufferData(buf, format, &data[0], total, srate);
return buf;
}
//
// A streaming OpenAL sound.
//
class OpenAL_SoundStream : public Sound
{
static const ALuint sNumBuffers = 4;
@ -100,26 +76,15 @@ public:
bool process();
};
class OpenAL_Sound : public Sound
{
public:
ALuint mSource;
ALuint mBuffer;
OpenAL_Sound(ALuint src, ALuint buf);
virtual ~OpenAL_Sound();
virtual void stop();
virtual bool isPlaying();
virtual void update(const float *pos);
};
//
// A background streaming thread (keeps active streams processed)
//
struct StreamThread {
typedef std::vector<OpenAL_SoundStream*> StreamVec;
static StreamVec sStreams;
static boost::mutex sMutex;
// boost::thread entry point
void operator()()
{
while(1)
@ -243,12 +208,12 @@ void OpenAL_SoundStream::play(float volume, float pitch)
void OpenAL_SoundStream::stop()
{
StreamThread::remove(this);
mIsFinished = true;
alSourceStop(mSource);
alSourcei(mSource, AL_BUFFER, 0);
throwALerror();
// FIXME: Rewind decoder
mIsFinished = true;
}
bool OpenAL_SoundStream::isPlaying()
@ -311,6 +276,49 @@ bool OpenAL_SoundStream::process()
return true;
}
//
// A regular OpenAL sound
//
class OpenAL_Sound : public Sound
{
ALuint mSource;
ALuint mBuffer;
public:
OpenAL_Sound(ALuint src, ALuint buf);
virtual ~OpenAL_Sound();
virtual void stop();
virtual bool isPlaying();
virtual void update(const float *pos);
static ALuint LoadBuffer(DecoderPtr decoder);
};
ALuint OpenAL_Sound::LoadBuffer(DecoderPtr decoder)
{
int srate;
ChannelConfig chans;
SampleType type;
ALenum format;
decoder->getInfo(&srate, &chans, &type);
format = getALFormat(chans, type);
std::vector<char> data(32768);
size_t got, total = 0;
while((got=decoder->read(&data[total], data.size()-total)) > 0)
{
total += got;
data.resize(total*2);
}
data.resize(total);
ALuint buf;
alGenBuffers(1, &buf);
alBufferData(buf, format, &data[0], total, srate);
return buf;
}
OpenAL_Sound::OpenAL_Sound(ALuint src, ALuint buf)
: mSource(src), mBuffer(buf)
@ -348,6 +356,9 @@ void OpenAL_Sound::update(const float *pos)
}
//
// An OpenAL output device
//
void OpenAL_Output::init(const std::string &devname)
{
if(mDevice || mContext)
@ -390,7 +401,7 @@ Sound* OpenAL_Output::playSound(const std::string &fname, float volume, float pi
ALuint src=0, buf=0;
try
{
buf = LoadBuffer(decoder);
buf = OpenAL_Sound::LoadBuffer(decoder);
decoder->close();
alGenSources(1, &src);
throwALerror();
@ -439,7 +450,7 @@ Sound* OpenAL_Output::playSound3D(const std::string &fname, const float *pos, fl
ALuint src=0, buf=0;
try
{
buf = LoadBuffer(decoder);
buf = OpenAL_Sound::LoadBuffer(decoder);
decoder->close();
alGenSources(1, &src);
throwALerror();