/
Mixer.cpp
273 lines (232 loc) · 7.84 KB
/
Mixer.cpp
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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "AudioCommon/AudioCommon.h"
#include "AudioCommon/Mixer.h"
#include "Common/CPUDetect.h"
#include "Common/MathUtil.h"
#include "Core/ConfigManager.h"
#include "Core/Core.h"
#include "Core/HW/AudioInterface.h"
#include "Core/HW/VideoInterface.h"
// UGLINESS
#include "Core/PowerPC/PowerPC.h"
#if _M_SSE >= 0x301 && !(defined __GNUC__ && !defined __SSSE3__)
#include <tmmintrin.h>
#endif
// Executed from sound stream thread
unsigned int CMixer::MixerFifo::Mix(short* samples, unsigned int numSamples, bool consider_framelimit)
{
unsigned int currentSample = 0;
// Cache access in non-volatile variable
// This is the only function changing the read value, so it's safe to
// cache it locally although it's written here.
// The writing pointer will be modified outside, but it will only increase,
// so we will just ignore new written data while interpolating.
// Without this cache, the compiler wouldn't be allowed to optimize the
// interpolation loop.
u32 indexR = m_indexR.load();
u32 indexW = m_indexW.load();
float numLeft = (float)(((indexW - indexR) & INDEX_MASK) / 2);
m_numLeftI = (numLeft + m_numLeftI*(CONTROL_AVG-1)) / CONTROL_AVG;
float offset = (m_numLeftI - LOW_WATERMARK) * CONTROL_FACTOR;
if (offset > MAX_FREQ_SHIFT) offset = MAX_FREQ_SHIFT;
if (offset < -MAX_FREQ_SHIFT) offset = -MAX_FREQ_SHIFT;
//render numleft sample pairs to samples[]
//advance indexR with sample position
//remember fractional offset
u32 framelimit = SConfig::GetInstance().m_Framelimit;
float aid_sample_rate = m_input_sample_rate + offset;
if (consider_framelimit && framelimit > 1)
{
aid_sample_rate = aid_sample_rate * (framelimit - 1) * 5 / VideoInterface::TargetRefreshRate;
}
const u32 ratio = (u32)(65536.0f * aid_sample_rate / (float)m_mixer->m_sampleRate);
s32 lvolume = m_LVolume.load();
s32 rvolume = m_RVolume.load();
// TODO: consider a higher-quality resampling algorithm.
for (; currentSample < numSamples * 2 && ((indexW-indexR) & INDEX_MASK) > 2; currentSample += 2)
{
u32 indexR2 = indexR + 2; //next sample
s16 l1 = Common::swap16(m_buffer[indexR & INDEX_MASK]); //current
s16 l2 = Common::swap16(m_buffer[indexR2 & INDEX_MASK]); //next
int sampleL = ((l1 << 16) + (l2 - l1) * (u16)m_frac) >> 16;
sampleL = (sampleL * lvolume) >> 8;
sampleL += samples[currentSample + 1];
MathUtil::Clamp(&sampleL, -32767, 32767);
samples[currentSample + 1] = sampleL;
s16 r1 = Common::swap16(m_buffer[(indexR + 1) & INDEX_MASK]); //current
s16 r2 = Common::swap16(m_buffer[(indexR2 + 1) & INDEX_MASK]); //next
int sampleR = ((r1 << 16) + (r2 - r1) * (u16)m_frac) >> 16;
sampleR = (sampleR * rvolume) >> 8;
sampleR += samples[currentSample];
MathUtil::Clamp(&sampleR, -32767, 32767);
samples[currentSample] = sampleR;
m_frac += ratio;
indexR += 2 * (u16)(m_frac >> 16);
m_frac &= 0xffff;
}
// Padding
short s[2];
s[0] = Common::swap16(m_buffer[(indexR - 1) & INDEX_MASK]);
s[1] = Common::swap16(m_buffer[(indexR - 2) & INDEX_MASK]);
s[0] = (s[0] * rvolume) >> 8;
s[1] = (s[1] * lvolume) >> 8;
for (; currentSample < numSamples * 2; currentSample += 2)
{
int sampleR = s[0] + samples[currentSample];
MathUtil::Clamp(&sampleR, -32767, 32767);
samples[currentSample] = sampleR;
int sampleL = s[1] + samples[currentSample + 1];
MathUtil::Clamp(&sampleL, -32767, 32767);
samples[currentSample + 1] = sampleL;
}
// Flush cached variable
m_indexR.store(indexR);
return numSamples;
}
unsigned int CMixer::Mix(short* samples, unsigned int num_samples, bool consider_framelimit)
{
if (!samples)
return 0;
memset(samples, 0, num_samples * 2 * sizeof(short));
if (PowerPC::GetState() != PowerPC::CPU_RUNNING)
{
// Silence
return num_samples;
}
m_dma_mixer.Mix(samples, num_samples, consider_framelimit);
m_streaming_mixer.Mix(samples, num_samples, consider_framelimit);
m_wiimote_speaker_mixer.Mix(samples, num_samples, consider_framelimit);
return num_samples;
}
void CMixer::MixerFifo::PushSamples(const short *samples, unsigned int num_samples)
{
// Cache access in non-volatile variable
// indexR isn't allowed to cache in the audio throttling loop as it
// needs to get updates to not deadlock.
u32 indexW = m_indexW.load();
// Check if we have enough free space
// indexW == m_indexR results in empty buffer, so indexR must always be smaller than indexW
if (num_samples * 2 + ((indexW - m_indexR.load()) & INDEX_MASK) >= MAX_SAMPLES * 2)
return;
// AyuanX: Actual re-sampling work has been moved to sound thread
// to alleviate the workload on main thread
// and we simply store raw data here to make fast mem copy
int over_bytes = num_samples * 4 - (MAX_SAMPLES * 2 - (indexW & INDEX_MASK)) * sizeof(short);
if (over_bytes > 0)
{
memcpy(&m_buffer[indexW & INDEX_MASK], samples, num_samples * 4 - over_bytes);
memcpy(&m_buffer[0], samples + (num_samples * 4 - over_bytes) / sizeof(short), over_bytes);
}
else
{
memcpy(&m_buffer[indexW & INDEX_MASK], samples, num_samples * 4);
}
m_indexW.fetch_add(num_samples * 2);
}
void CMixer::PushSamples(const short *samples, unsigned int num_samples)
{
m_dma_mixer.PushSamples(samples, num_samples);
if (m_log_dsp_audio)
m_wave_writer_dsp.AddStereoSamplesBE(samples, num_samples);
}
void CMixer::PushStreamingSamples(const short *samples, unsigned int num_samples)
{
m_streaming_mixer.PushSamples(samples, num_samples);
if (m_log_dtk_audio)
m_wave_writer_dtk.AddStereoSamplesBE(samples, num_samples);
}
void CMixer::PushWiimoteSpeakerSamples(const short *samples, unsigned int num_samples, unsigned int sample_rate)
{
short samples_stereo[MAX_SAMPLES * 2];
if (num_samples < MAX_SAMPLES)
{
m_wiimote_speaker_mixer.SetInputSampleRate(sample_rate);
for (unsigned int i = 0; i < num_samples; ++i)
{
samples_stereo[i * 2] = Common::swap16(samples[i]);
samples_stereo[i * 2 + 1] = Common::swap16(samples[i]);
}
m_wiimote_speaker_mixer.PushSamples(samples_stereo, num_samples);
}
}
void CMixer::SetDMAInputSampleRate(unsigned int rate)
{
m_dma_mixer.SetInputSampleRate(rate);
}
void CMixer::SetStreamInputSampleRate(unsigned int rate)
{
m_streaming_mixer.SetInputSampleRate(rate);
}
void CMixer::SetStreamingVolume(unsigned int lvolume, unsigned int rvolume)
{
m_streaming_mixer.SetVolume(lvolume, rvolume);
}
void CMixer::SetWiimoteSpeakerVolume(unsigned int lvolume, unsigned int rvolume)
{
m_wiimote_speaker_mixer.SetVolume(lvolume, rvolume);
}
void CMixer::StartLogDTKAudio(const std::string& filename)
{
if (!m_log_dtk_audio)
{
m_log_dtk_audio = true;
m_wave_writer_dtk.Start(filename, 48000);
m_wave_writer_dtk.SetSkipSilence(false);
NOTICE_LOG(DSPHLE, "Starting DTK Audio logging");
}
else
{
WARN_LOG(DSPHLE, "DTK Audio logging has already been started");
}
}
void CMixer::StopLogDTKAudio()
{
if (m_log_dtk_audio)
{
m_log_dtk_audio = false;
m_wave_writer_dtk.Stop();
NOTICE_LOG(DSPHLE, "Stopping DTK Audio logging");
}
else
{
WARN_LOG(DSPHLE, "DTK Audio logging has already been stopped");
}
}
void CMixer::StartLogDSPAudio(const std::string& filename)
{
if (!m_log_dsp_audio)
{
m_log_dsp_audio = true;
m_wave_writer_dsp.Start(filename, 32000);
m_wave_writer_dsp.SetSkipSilence(false);
NOTICE_LOG(DSPHLE, "Starting DSP Audio logging");
}
else
{
WARN_LOG(DSPHLE, "DSP Audio logging has already been started");
}
}
void CMixer::StopLogDSPAudio()
{
if (m_log_dsp_audio)
{
m_log_dsp_audio = false;
m_wave_writer_dsp.Stop();
NOTICE_LOG(DSPHLE, "Stopping DSP Audio logging");
}
else
{
WARN_LOG(DSPHLE, "DSP Audio logging has already been stopped");
}
}
void CMixer::MixerFifo::SetInputSampleRate(unsigned int rate)
{
m_input_sample_rate = rate;
}
void CMixer::MixerFifo::SetVolume(unsigned int lvolume, unsigned int rvolume)
{
m_LVolume.store(lvolume + (lvolume >> 7));
m_RVolume.store(rvolume + (rvolume >> 7));
}