1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/**
* 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 <cstdlib>
#include <cmath>
#include <algorithm>
#include "alMain.h"
#include "alcontext.h"
#include "alAuxEffectSlot.h"
#include "alError.h"
#include "alu.h"
namespace {
struct DedicatedState final : public EffectState {
ALfloat mCurrentGains[MAX_OUTPUT_CHANNELS];
ALfloat mTargetGains[MAX_OUTPUT_CHANNELS];
ALboolean deviceUpdate(const ALCdevice *device) override;
void update(const ALCcontext *context, const ALeffectslot *slot, const ALeffectProps *props, const EffectTarget target) override;
void process(ALsizei samplesToDo, const ALfloat (*RESTRICT samplesIn)[BUFFERSIZE], const ALsizei numInput, ALfloat (*RESTRICT samplesOut)[BUFFERSIZE], const ALsizei numOutput) override;
DEF_NEWDEL(DedicatedState)
};
ALboolean DedicatedState::deviceUpdate(const ALCdevice *UNUSED(device))
{
std::fill(std::begin(mCurrentGains), std::end(mCurrentGains), 0.0f);
return AL_TRUE;
}
void DedicatedState::update(const ALCcontext* UNUSED(context), const ALeffectslot *slot, const ALeffectProps *props, const EffectTarget target)
{
std::fill(std::begin(mTargetGains), std::end(mTargetGains), 0.0f);
const ALfloat Gain{slot->Params.Gain * props->Dedicated.Gain};
if(slot->Params.EffectType == AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT)
{
const int idx{!target.RealOut ? -1 : GetChannelIdxByName(*target.RealOut, LFE)};
if(idx != -1)
{
mOutBuffer = target.RealOut->Buffer;
mOutChannels = target.RealOut->NumChannels;
mTargetGains[idx] = Gain;
}
}
else if(slot->Params.EffectType == AL_EFFECT_DEDICATED_DIALOGUE)
{
/* Dialog goes to the front-center speaker if it exists, otherwise it
* plays from the front-center location. */
const int idx{!target.RealOut ? -1 : GetChannelIdxByName(*target.RealOut, FrontCenter)};
if(idx != -1)
{
mOutBuffer = target.RealOut->Buffer;
mOutChannels = target.RealOut->NumChannels;
mTargetGains[idx] = Gain;
}
else
{
ALfloat coeffs[MAX_AMBI_CHANNELS];
CalcAngleCoeffs(0.0f, 0.0f, 0.0f, coeffs);
mOutBuffer = target.Main->Buffer;
mOutChannels = target.Main->NumChannels;
ComputePanGains(target.Main, coeffs, Gain, mTargetGains);
}
}
}
void DedicatedState::process(ALsizei samplesToDo, const ALfloat (*RESTRICT samplesIn)[BUFFERSIZE], const ALsizei /*numInput*/, ALfloat (*RESTRICT samplesOut)[BUFFERSIZE], const ALsizei numOutput)
{
MixSamples(samplesIn[0], numOutput, samplesOut, mCurrentGains, mTargetGains, samplesToDo, 0,
samplesToDo);
}
void Dedicated_setParami(ALeffectProps*, ALCcontext *context, ALenum param, ALint)
{ alSetError(context, AL_INVALID_ENUM, "Invalid dedicated integer property 0x%04x", param); }
void Dedicated_setParamiv(ALeffectProps*, ALCcontext *context, ALenum param, const ALint*)
{ alSetError(context, AL_INVALID_ENUM, "Invalid dedicated integer-vector property 0x%04x", param); }
void Dedicated_setParamf(ALeffectProps *props, ALCcontext *context, ALenum param, ALfloat val)
{
switch(param)
{
case AL_DEDICATED_GAIN:
if(!(val >= 0.0f && std::isfinite(val)))
SETERR_RETURN(context, AL_INVALID_VALUE,, "Dedicated gain out of range");
props->Dedicated.Gain = val;
break;
default:
alSetError(context, AL_INVALID_ENUM, "Invalid dedicated float property 0x%04x", param);
}
}
void Dedicated_setParamfv(ALeffectProps *props, ALCcontext *context, ALenum param, const ALfloat *vals)
{ Dedicated_setParamf(props, context, param, vals[0]); }
void Dedicated_getParami(const ALeffectProps*, ALCcontext *context, ALenum param, ALint*)
{ alSetError(context, AL_INVALID_ENUM, "Invalid dedicated integer property 0x%04x", param); }
void Dedicated_getParamiv(const ALeffectProps*, ALCcontext *context, ALenum param, ALint*)
{ alSetError(context, AL_INVALID_ENUM, "Invalid dedicated integer-vector property 0x%04x", param); }
void Dedicated_getParamf(const ALeffectProps *props, ALCcontext *context, ALenum param, ALfloat *val)
{
switch(param)
{
case AL_DEDICATED_GAIN:
*val = props->Dedicated.Gain;
break;
default:
alSetError(context, AL_INVALID_ENUM, "Invalid dedicated float property 0x%04x", param);
}
}
void Dedicated_getParamfv(const ALeffectProps *props, ALCcontext *context, ALenum param, ALfloat *vals)
{ Dedicated_getParamf(props, context, param, vals); }
DEFINE_ALEFFECT_VTABLE(Dedicated);
struct DedicatedStateFactory final : public EffectStateFactory {
EffectState *create() override { return new DedicatedState{}; }
ALeffectProps getDefaultProps() const noexcept override;
const EffectVtable *getEffectVtable() const noexcept override { return &Dedicated_vtable; }
};
ALeffectProps DedicatedStateFactory::getDefaultProps() const noexcept
{
ALeffectProps props{};
props.Dedicated.Gain = 1.0f;
return props;
}
} // namespace
EffectStateFactory *DedicatedStateFactory_getFactory()
{
static DedicatedStateFactory DedicatedFactory{};
return &DedicatedFactory;
}
|
