🛠️🐜 Antkeeper superbuild with dependencies included
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
3.8 KiB
120 lines
3.8 KiB
/**
|
|
* OpenAL cross platform audio library
|
|
* Copyright (C) 2011 by Chris Robinson.
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
* Or go to http://www.gnu.org/copyleft/lgpl.html
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <algorithm>
|
|
#include <array>
|
|
#include <cstdlib>
|
|
#include <iterator>
|
|
|
|
#include "alc/effects/base.h"
|
|
#include "almalloc.h"
|
|
#include "alspan.h"
|
|
#include "core/bufferline.h"
|
|
#include "core/devformat.h"
|
|
#include "core/device.h"
|
|
#include "core/effectslot.h"
|
|
#include "core/mixer.h"
|
|
#include "intrusive_ptr.h"
|
|
|
|
struct ContextBase;
|
|
|
|
|
|
namespace {
|
|
|
|
using uint = unsigned int;
|
|
|
|
struct DedicatedState final : public EffectState {
|
|
float mCurrentGains[MAX_OUTPUT_CHANNELS];
|
|
float mTargetGains[MAX_OUTPUT_CHANNELS];
|
|
|
|
|
|
void deviceUpdate(const DeviceBase *device, const Buffer &buffer) override;
|
|
void update(const ContextBase *context, const EffectSlot *slot, const EffectProps *props,
|
|
const EffectTarget target) override;
|
|
void process(const size_t samplesToDo, const al::span<const FloatBufferLine> samplesIn,
|
|
const al::span<FloatBufferLine> samplesOut) override;
|
|
|
|
DEF_NEWDEL(DedicatedState)
|
|
};
|
|
|
|
void DedicatedState::deviceUpdate(const DeviceBase*, const Buffer&)
|
|
{
|
|
std::fill(std::begin(mCurrentGains), std::end(mCurrentGains), 0.0f);
|
|
}
|
|
|
|
void DedicatedState::update(const ContextBase*, const EffectSlot *slot,
|
|
const EffectProps *props, const EffectTarget target)
|
|
{
|
|
std::fill(std::begin(mTargetGains), std::end(mTargetGains), 0.0f);
|
|
|
|
const float Gain{slot->Gain * props->Dedicated.Gain};
|
|
|
|
if(slot->EffectType == EffectSlotType::DedicatedLFE)
|
|
{
|
|
const uint idx{!target.RealOut ? INVALID_CHANNEL_INDEX :
|
|
GetChannelIdxByName(*target.RealOut, LFE)};
|
|
if(idx != INVALID_CHANNEL_INDEX)
|
|
{
|
|
mOutTarget = target.RealOut->Buffer;
|
|
mTargetGains[idx] = Gain;
|
|
}
|
|
}
|
|
else if(slot->EffectType == EffectSlotType::DedicatedDialog)
|
|
{
|
|
/* Dialog goes to the front-center speaker if it exists, otherwise it
|
|
* plays from the front-center location. */
|
|
const uint idx{!target.RealOut ? INVALID_CHANNEL_INDEX :
|
|
GetChannelIdxByName(*target.RealOut, FrontCenter)};
|
|
if(idx != INVALID_CHANNEL_INDEX)
|
|
{
|
|
mOutTarget = target.RealOut->Buffer;
|
|
mTargetGains[idx] = Gain;
|
|
}
|
|
else
|
|
{
|
|
const auto coeffs = CalcDirectionCoeffs({0.0f, 0.0f, -1.0f}, 0.0f);
|
|
|
|
mOutTarget = target.Main->Buffer;
|
|
ComputePanGains(target.Main, coeffs.data(), Gain, mTargetGains);
|
|
}
|
|
}
|
|
}
|
|
|
|
void DedicatedState::process(const size_t samplesToDo, const al::span<const FloatBufferLine> samplesIn, const al::span<FloatBufferLine> samplesOut)
|
|
{
|
|
MixSamples({samplesIn[0].data(), samplesToDo}, samplesOut, mCurrentGains, mTargetGains,
|
|
samplesToDo, 0);
|
|
}
|
|
|
|
|
|
struct DedicatedStateFactory final : public EffectStateFactory {
|
|
al::intrusive_ptr<EffectState> create() override
|
|
{ return al::intrusive_ptr<EffectState>{new DedicatedState{}}; }
|
|
};
|
|
|
|
} // namespace
|
|
|
|
EffectStateFactory *DedicatedStateFactory_getFactory()
|
|
{
|
|
static DedicatedStateFactory DedicatedFactory{};
|
|
return &DedicatedFactory;
|
|
}
|