teamnwah/openmw-tes3coop
2
0
Fork 1
forked from mirror/openmw-tes3mp
Code Issues Pull requests 1 Releases Wiki Activity

Add a method to stream sounds in 3D

Browse source
This commit is contained in:
Chris Robinson 2015-11-23 19:41:57 -08:00
parent f1a1dc8408
commit eee6a19e31
3 changed files with 73 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

67
apps/openmw/mwsound/openal_output.cpp
View file

@ -158,9 +158,12 @@ class OpenAL_SoundStream : public Sound
static const ALuint sNumBuffers = 6;
static const ALfloat sBufferLength;
protected:
OpenAL_Output &mOutput;
ALuint mSource;
private:
ALuint mBuffers[sNumBuffers];
ALint mCurrentBufIdx;
@ -194,9 +197,22 @@ public:
bool process();
ALint refillQueue();
};
const ALfloat OpenAL_SoundStream::sBufferLength = 0.125f;
class OpenAL_SoundStream3D : public OpenAL_SoundStream
{
OpenAL_SoundStream3D(const OpenAL_SoundStream3D &rhs);
OpenAL_SoundStream3D& operator=(const OpenAL_SoundStream3D &rhs);
public:
OpenAL_SoundStream3D(OpenAL_Output &output, ALuint src, DecoderPtr decoder, const osg::Vec3f& pos, float vol, float basevol, float pitch, float mindist, float maxdist, int flags)
: OpenAL_SoundStream(output, src, decoder, pos, vol, basevol, pitch, mindist, maxdist, flags)
{ }
virtual void update();
};
//
// A background streaming thread (keeps active streams processed)
//
@ -481,6 +497,26 @@ ALint OpenAL_SoundStream::refillQueue()
return queued;
}
void OpenAL_SoundStream3D::update()
{
ALfloat gain = mVolume*mBaseVolume;
ALfloat pitch = mPitch;
if((mPos - mOutput.mPos).length2() > mMaxDistance*mMaxDistance)
gain = 0.0f;
else if(!(mFlags&MWBase::SoundManager::Play_NoEnv) && mOutput.mLastEnvironment == Env_Underwater)
{
gain *= 0.9f;
pitch *= 0.7f;
}
alSourcef(mSource, AL_GAIN, gain);
alSourcef(mSource, AL_PITCH, pitch);
alSource3f(mSource, AL_POSITION, mPos[0], mPos[1], mPos[2]);
alSource3f(mSource, AL_DIRECTION, 0.0f, 0.0f, 0.0f);
alSource3f(mSource, AL_VELOCITY, 0.0f, 0.0f, 0.0f);
throwALerror();
}
//
// A regular 2D OpenAL sound
@ -917,6 +953,35 @@ MWBase::SoundPtr OpenAL_Output::streamSound(DecoderPtr decoder, float basevol, f
}
MWBase::SoundPtr OpenAL_Output::streamSound3D(DecoderPtr decoder, const osg::Vec3f &pos, float volume, float basevol, float pitch, float min, float max, int flags)
{
boost::shared_ptr<OpenAL_SoundStream> sound;
ALuint src;
if(mFreeSources.empty())
fail("No free sources");
src = mFreeSources.front();
mFreeSources.pop_front();
if((flags&MWBase::SoundManager::Play_Loop))
std::cout <<"Warning: cannot loop stream \""<<decoder->getName()<<"\""<< std::endl;
try
{
sound.reset(new OpenAL_SoundStream3D(*this, src, decoder, pos, volume, basevol, pitch, min, max, flags));
}
catch(std::exception&)
{
mFreeSources.push_back(src);
throw;
}
sound->updateAll(true);
sound->play();
return sound;
}
void OpenAL_Output::updateListener(const osg::Vec3f &pos, const osg::Vec3f &atdir, const osg::Vec3f &updir, Environment env)
{
mPos = pos;

5
apps/openmw/mwsound/openal_output.hpp
View file

@ -47,7 +47,9 @@ namespace MWSound
/// @param offset Value from [0,1] meaning from which fraction the sound the playback starts.
virtual MWBase::SoundPtr playSound3D(Sound_Handle data, const osg::Vec3f &pos,
float vol, float basevol, float pitch, float min, float max, int flags, float offset);
virtual MWBase::SoundPtr streamSound(DecoderPtr decoder, float volume, float pitch, int flags);
virtual MWBase::SoundPtr streamSound(DecoderPtr decoder, float basevol, float pitch, int flags);
virtual MWBase::SoundPtr streamSound3D(DecoderPtr decoder, const osg::Vec3f &pos,
float vol, float basevol, float pitch, float min, float max, int flags);
virtual void updateListener(const osg::Vec3f &pos, const osg::Vec3f &atdir, const osg::Vec3f &updir, Environment env);
@ -66,6 +68,7 @@ namespace MWSound
friend class OpenAL_Sound;
friend class OpenAL_Sound3D;
friend class OpenAL_SoundStream;
friend class OpenAL_SoundStream3D;
friend class SoundManager;
};
#ifndef DEFAULT_OUTPUT

4
apps/openmw/mwsound/sound_output.hpp
View file

@ -35,7 +35,9 @@ namespace MWSound
/// @param offset Value from [0,1] meaning from which fraction the sound the playback starts.
virtual MWBase::SoundPtr playSound3D(Sound_Handle data, const osg::Vec3f &pos,
float vol, float basevol, float pitch, float min, float max, int flags, float offset) = 0;
virtual MWBase::SoundPtr streamSound(DecoderPtr decoder, float volume, float pitch, int flags) = 0;
virtual MWBase::SoundPtr streamSound(DecoderPtr decoder, float basevol, float pitch, int flags) = 0;
virtual MWBase::SoundPtr streamSound3D(DecoderPtr decoder, const osg::Vec3f &pos,
float vol, float basevol, float pitch, float min, float max, int flags) = 0;
virtual void updateListener(const osg::Vec3f &pos, const osg::Vec3f &atdir, const osg::Vec3f &updir, Environment env) = 0;