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
|
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <memory>
#include "audio_core/hle/dsp.h"
#include "audio_core/hle/pipe.h"
#include "audio_core/hle/source.h"
#include "audio_core/sink.h"
#include "audio_core/time_stretch.h"
namespace DSP {
namespace HLE {
std::array<SharedMemory, 2> g_regions;
static size_t CurrentRegionIndex() {
// The region with the higher frame counter is chosen unless there is wraparound.
// This function only returns a 0 or 1.
if (g_regions[0].frame_counter == 0xFFFFu && g_regions[1].frame_counter != 0xFFFEu) {
// Wraparound has occured.
return 1;
}
if (g_regions[1].frame_counter == 0xFFFFu && g_regions[0].frame_counter != 0xFFFEu) {
// Wraparound has occured.
return 0;
}
return (g_regions[0].frame_counter > g_regions[1].frame_counter) ? 0 : 1;
}
static SharedMemory& ReadRegion() {
return g_regions[CurrentRegionIndex()];
}
static SharedMemory& WriteRegion() {
return g_regions[1 - CurrentRegionIndex()];
}
static std::array<Source, num_sources> sources = {
Source(0), Source(1), Source(2), Source(3), Source(4), Source(5),
Source(6), Source(7), Source(8), Source(9), Source(10), Source(11),
Source(12), Source(13), Source(14), Source(15), Source(16), Source(17),
Source(18), Source(19), Source(20), Source(21), Source(22), Source(23)
};
static std::unique_ptr<AudioCore::Sink> sink;
static AudioCore::TimeStretcher time_stretcher;
void Init() {
DSP::HLE::ResetPipes();
for (auto& source : sources) {
source.Reset();
}
time_stretcher.Reset();
if (sink) {
time_stretcher.SetOutputSampleRate(sink->GetNativeSampleRate());
}
}
void Shutdown() {
time_stretcher.Flush();
while (true) {
std::vector<s16> residual_audio = time_stretcher.Process(sink->SamplesInQueue());
if (residual_audio.empty())
break;
sink->EnqueueSamples(residual_audio);
}
}
bool Tick() {
SharedMemory& read = ReadRegion();
SharedMemory& write = WriteRegion();
std::array<QuadFrame32, 3> intermediate_mixes = {};
for (size_t i = 0; i < num_sources; i++) {
write.source_statuses.status[i] = sources[i].Tick(read.source_configurations.config[i], read.adpcm_coefficients.coeff[i]);
for (size_t mix = 0; mix < 3; mix++) {
sources[i].MixInto(intermediate_mixes[mix], mix);
}
}
return true;
}
void SetSink(std::unique_ptr<AudioCore::Sink> sink_) {
sink = std::move(sink_);
time_stretcher.SetOutputSampleRate(sink->GetNativeSampleRate());
}
} // namespace HLE
} // namespace DSP
|
