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Code Issues 123 Wiki Activity

use openal-soft extensions to pause sounds and defer updates

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This commit is contained in:
milek7
2017-08-25 22:02:31 +02:00
parent 9d91b19841
commit 83c0f4b8e2
4 changed files with 76 additions and 35 deletions
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68
sound.cpp
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@@ -18,6 +18,10 @@ load_error::load_error(std::string const &f) : std::runtime_error("sound: cannot
sound_manager::sound_manager()
{
if (created)
throw std::runtime_error("sound_manager can be instantinated only once");
created = true;
dev = alcOpenDevice(0);
if (!dev)
throw std::runtime_error("sound: cannot open device");
@@ -35,6 +39,22 @@ sound_manager::sound_manager()
if (!alcMakeContextCurrent(ctx))
throw std::runtime_error("sound: cannot select context");
if (alIsExtensionPresent("AL_SOFT_deferred_updates"))
{
alDeferUpdatesSOFT = (void(*)())alGetProcAddress("alDeferUpdatesSOFT");
alProcessUpdatesSOFT = (void(*)())alGetProcAddress("alProcessUpdatesSOFT");
}
if (!alDeferUpdatesSOFT || !alProcessUpdatesSOFT)
WriteLog("sound: warning: extension AL_SOFT_deferred_updates not found");
if (alcIsExtensionPresent(dev, "ALC_SOFT_pause_device"))
{
alcDevicePauseSOFT = (void(*)(ALCdevice*))alcGetProcAddress(dev, "alcDevicePauseSOFT");
alcDeviceResumeSOFT = (void(*)(ALCdevice*))alcGetProcAddress(dev, "alcDeviceResumeSOFT");
}
if (!alcDevicePauseSOFT || !alcDeviceResumeSOFT)
WriteLog("sound: warning: extension ALC_SOFT_pause_device not found");
alDistanceModel(AL_INVERSE_DISTANCE_CLAMPED);
alGetError();
@@ -45,6 +65,8 @@ sound_manager::~sound_manager()
alcMakeContextCurrent(0);
alcDestroyContext(ctx);
alcCloseDevice(dev);
created = false;
}
sound_buffer* sound_manager::find_buffer(std::string name)
@@ -198,25 +220,43 @@ void sound_manager::update(float dt)
throw std::runtime_error("sound: al error: " + errname);
}
auto now = std::chrono::steady_clock::now();
auto it = buffers.begin();
while (it != buffers.end())
if (dt > 0.0f)
{
if (now - it->second->unused_since() > gc_time)
if (alcDeviceResumeSOFT)
alcDeviceResumeSOFT(dev);
auto now = std::chrono::steady_clock::now();
auto it = buffers.begin();
while (it != buffers.end())
{
delete it->second;
it = buffers.erase(it);
if (now - it->second->unused_since() > gc_time)
{
delete it->second;
it = buffers.erase(it);
}
else
it++;
}
else
it++;
glm::vec3 velocity = (pos - last_pos) / dt;
alListenerfv(AL_VELOCITY, glm::value_ptr(velocity));
last_pos = pos;
for (auto &s : sounds)
s->update(dt);
}
else
{
if (alcDevicePauseSOFT)
alcDevicePauseSOFT(dev);
}
glm::vec3 velocity = (pos - last_pos) / dt;
alListenerfv(AL_VELOCITY, glm::value_ptr(velocity));
last_pos = pos;
for (auto &s : sounds)
s->update(dt);
if (alProcessUpdatesSOFT)
{
alProcessUpdatesSOFT();
alDeferUpdatesSOFT();
}
}
void sound_manager::set_listener(glm::vec3 const &p, glm::vec3 const &at, glm::vec3 const &up)
@@ -613,4 +653,4 @@ std::chrono::time_point<std::chrono::steady_clock> sound_buffer::unused_since()
return last_unref;
}
sound_manager* sound_man;
bool sound_manager::created = false;