-
Notifications
You must be signed in to change notification settings - Fork 3
/
AEChannelInfo.cpp
255 lines (214 loc) · 6.33 KB
/
AEChannelInfo.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
/*
* Copyright (C) 2005-2011 Team XBMC
* http://xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "AEChannelInfo.h"
#include <string.h>
CAEChannelInfo::CAEChannelInfo()
{
Reset();
}
CAEChannelInfo::CAEChannelInfo(const enum AEChannel* rhs)
{
*this = rhs;
}
CAEChannelInfo::CAEChannelInfo(const AEStdChLayout rhs)
{
*this = rhs;
}
CAEChannelInfo::~CAEChannelInfo()
{
}
void CAEChannelInfo::ResolveChannels(const CAEChannelInfo& rhs)
{
/* mono gets upmixed to dual mono */
if (m_channelCount == 1 && m_channels[0] == AE_CH_FC)
{
Reset();
*this += AE_CH_FL;
*this += AE_CH_FR;
return;
}
bool srcHasSL = false;
bool srcHasSR = false;
bool srcHasRL = false;
bool srcHasRR = false;
bool dstHasSL = false;
bool dstHasSR = false;
bool dstHasRL = false;
bool dstHasRR = false;
for(unsigned int c = 0; c < rhs.m_channelCount; ++c)
switch(rhs.m_channels[c])
{
case AE_CH_SL: dstHasSL = true; break;
case AE_CH_SR: dstHasSR = true; break;
case AE_CH_BL: dstHasRL = true; break;
case AE_CH_BR: dstHasRR = true; break;
default:
break;
}
CAEChannelInfo newInfo;
for(unsigned int i = 0; i < m_channelCount; ++i)
{
switch(m_channels[i])
{
case AE_CH_SL: srcHasSL = true; break;
case AE_CH_SR: srcHasSR = true; break;
case AE_CH_BL: srcHasRL = true; break;
case AE_CH_BR: srcHasRR = true; break;
default:
break;
}
bool found = false;
for(unsigned int c = 0; c < rhs.m_channelCount; ++c)
if (m_channels[i] == rhs.m_channels[c])
{
found = true;
break;
}
if (found)
newInfo += m_channels[i];
}
/* we need to ensure we end up with rear or side channels for downmix to work */
if (srcHasSL && !dstHasSL && dstHasRL) newInfo += AE_CH_BL;
if (srcHasSR && !dstHasSR && dstHasRR) newInfo += AE_CH_BR;
if (srcHasRL && !dstHasRL && dstHasSL) newInfo += AE_CH_SL;
if (srcHasRR && !dstHasRR && dstHasSR) newInfo += AE_CH_SR;
*this = newInfo;
}
void CAEChannelInfo::Reset()
{
m_channelCount = 0;
for(unsigned int i = 0; i < AE_CH_MAX; ++i)
m_channels[i] = AE_CH_NULL;
}
CAEChannelInfo& CAEChannelInfo::operator=(const CAEChannelInfo& rhs)
{
if (this == &rhs)
return *this;
/* clone the information */
m_channelCount = rhs.m_channelCount;
memcpy(m_channels, rhs.m_channels, sizeof(enum AEChannel) * rhs.m_channelCount);
return *this;
}
CAEChannelInfo& CAEChannelInfo::operator=(const enum AEChannel* rhs)
{
Reset();
if(rhs == NULL)
return *this;
while(m_channelCount < AE_CH_MAX && rhs[m_channelCount] != AE_CH_NULL)
{
m_channels[m_channelCount] = rhs[m_channelCount];
++m_channelCount;
}
/* the last entry should be NULL, if not we were passed a non null terminated list */
ASSERT(rhs[m_channelCount] == AE_CH_NULL);
return *this;
}
CAEChannelInfo& CAEChannelInfo::operator=(const enum AEStdChLayout rhs)
{
ASSERT(rhs > AE_CH_LAYOUT_INVALID && rhs < AE_CH_LAYOUT_MAX);
static enum AEChannel layouts[AE_CH_LAYOUT_MAX][9] = {
{AE_CH_FC, AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_LFE, AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_FC , AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_FC , AE_CH_LFE, AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_BL , AE_CH_BR , AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_BL , AE_CH_BR , AE_CH_LFE, AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_FC , AE_CH_BL , AE_CH_BR , AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_FC , AE_CH_BL , AE_CH_BR , AE_CH_LFE, AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_FC , AE_CH_BL , AE_CH_BR , AE_CH_SL , AE_CH_SR, AE_CH_NULL},
{AE_CH_FL, AE_CH_FR, AE_CH_FC , AE_CH_BL , AE_CH_BR , AE_CH_SL , AE_CH_SR, AE_CH_LFE, AE_CH_NULL}
};
*this = layouts[rhs];
return *this;
}
bool CAEChannelInfo::operator==(const CAEChannelInfo& rhs)
{
/* if the channel count doesnt match, no need to check further */
if (m_channelCount != rhs.m_channelCount)
return false;
/* make sure the channel order is the same */
for(unsigned int i = 0; i < m_channelCount; ++i)
if (m_channels[i] != rhs.m_channels[i])
return false;
return true;
}
bool CAEChannelInfo::operator!=(const CAEChannelInfo& rhs)
{
return !(*this == rhs);
}
void CAEChannelInfo::operator+=(const enum AEChannel rhs)
{
ASSERT(m_channelCount < AE_CH_MAX);
ASSERT(rhs > AE_CH_NULL && rhs < AE_CH_MAX);
m_channels[m_channelCount++] = rhs;
}
const enum AEChannel CAEChannelInfo::operator[](unsigned int i) const
{
ASSERT(i < m_channelCount);
return m_channels[i];
}
CAEChannelInfo::operator std::string()
{
if (m_channelCount == 0)
return "NULL";
std::string s;
for(unsigned int i = 0; i < m_channelCount - 1; ++i)
{
s.append(GetChName(m_channels[i]));
s.append(",");
}
s.append(GetChName(m_channels[m_channelCount-1]));
return s;
}
unsigned int CAEChannelInfo::Count() const
{
return m_channelCount;
}
const char* CAEChannelInfo::GetChName(const enum AEChannel ch)
{
if (ch < 0 || ch >= AE_CH_MAX)
return "UNKNOWN";
static const char* channels[AE_CH_MAX] =
{
"RAW" ,
"FL" , "FR" , "FC" , "LFE", "BL" , "BR" , "FLOC",
"FROC", "BC" , "SL" , "SR" , "TFL" , "TFR" , "TFC" ,
"TC" , "TBL", "TBR", "TBC", "BLOC", "BROC"
};
return channels[ch];
}
bool CAEChannelInfo::HasChannel(const enum AEChannel ch)
{
for(unsigned int i = 0; i < m_channelCount; ++i)
if (m_channels[i] == ch)
return true;
return false;
}
bool CAEChannelInfo::ContainsChannels(CAEChannelInfo& rhs)
{
for(unsigned int i = 0; i < rhs.m_channelCount; ++i)
{
if (!HasChannel(rhs.m_channels[i]))
return false;
}
return true;
}