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
|
#if defined(WITH_AUDIO)
# define NCINE_INCLUDE_OPENAL
# include "../CommonHeaders.h"
#endif
#include "AudioBuffer.h"
#include "IAudioLoader.h"
#include "../../Main.h"
#include <Containers/String.h>
namespace nCine
{
#if defined(WITH_AUDIO)
namespace
{
ALenum alFormat(int bytesPerSample, int numChannels)
{
ALenum format = AL_FORMAT_MONO8;
if (bytesPerSample == 1 && numChannels == 2) {
format = AL_FORMAT_STEREO8;
} else if (bytesPerSample == 2 && numChannels == 1) {
format = AL_FORMAT_MONO16;
} else if (bytesPerSample == 2 && numChannels == 2) {
format = AL_FORMAT_STEREO16;
}
return format;
}
}
#endif
AudioBuffer::AudioBuffer()
: Object(ObjectType::AudioBuffer), bufferId_(0), bytesPerSample_(0), numChannels_(0), frequency_(0),
numSamples_(0), duration_(0.0f)
{
#if defined(WITH_AUDIO)
alGetError();
alGenBuffers(1, &bufferId_);
const ALenum error = alGetError();
if DEATH_UNLIKELY(error != AL_NO_ERROR) {
LOGW("alGenBuffers() failed with error 0x{:x}", error);
}
#endif
}
/*AudioBuffer::AudioBuffer(const unsigned char* bufferPtr, unsigned long int bufferSize)
: AudioBuffer()
{
#if defined(WITH_AUDIO)
const bool hasLoaded = loadFromMemory(bufferPtr, bufferSize);
if (!hasLoaded) {
LOGE("Audio buffer cannot be loaded");
}
#endif
}*/
AudioBuffer::AudioBuffer(StringView filename)
: AudioBuffer()
{
#if defined(WITH_AUDIO)
const bool hasLoaded = loadFromFile(filename);
if (!hasLoaded) {
LOGE("Audio file \"{}\" cannot be loaded", filename);
}
#endif
}
AudioBuffer::AudioBuffer(std::unique_ptr<Death::IO::Stream> fileHandle, StringView filename)
: AudioBuffer()
{
#if defined(WITH_AUDIO)
const bool hasLoaded = loadFromStream(std::move(fileHandle), filename);
if (!hasLoaded) {
LOGE("Audio file \"{}\" cannot be loaded", filename);
}
#endif
}
AudioBuffer::~AudioBuffer()
{
#if defined(WITH_AUDIO)
// Moved out objects have their buffer id set to zero
alDeleteBuffers(1, &bufferId_);
#endif
}
AudioBuffer::AudioBuffer(AudioBuffer&& other) noexcept
: Object(std::move(other)), bufferId_(other.bufferId_), bytesPerSample_(other.bytesPerSample_), numChannels_(other.numChannels_),
frequency_(other.frequency_), numSamples_(other.numSamples_), duration_(other.duration_)
{
other.bufferId_ = 0;
}
AudioBuffer& AudioBuffer::operator=(AudioBuffer&& other) noexcept
{
Object::operator=(std::move(other));
bufferId_ = other.bufferId_;
bytesPerSample_ = other.bytesPerSample_;
numChannels_ = other.numChannels_;
frequency_ = other.frequency_;
numSamples_ = other.numSamples_;
duration_ = other.duration_;
other.bufferId_ = 0;
return *this;
}
void AudioBuffer::init(Format format, std::int32_t frequency)
{
#if defined(WITH_AUDIO)
switch (format) {
case Format::Mono8:
bytesPerSample_ = 1;
numChannels_ = 1;
break;
case Format::Stereo8:
bytesPerSample_ = 1;
numChannels_ = 2;
break;
case Format::Mono16:
bytesPerSample_ = 2;
numChannels_ = 1;
break;
case Format::Stereo16:
bytesPerSample_ = 2;
numChannels_ = 2;
break;
}
frequency_ = frequency;
loadFromSamples(nullptr, 0);
#endif
}
/*bool AudioBuffer::loadFromMemory(const unsigned char* bufferPtr, unsigned long int bufferSize)
{
#if defined(WITH_AUDIO)
std::unique_ptr<IAudioLoader> audioLoader = IAudioLoader::createFromMemory(bufferPtr, bufferSize);
if (audioLoader->hasLoaded()) {
return load(*audioLoader.get());
}
#endif
return false;
}*/
bool AudioBuffer::loadFromFile(StringView filename)
{
#if defined(WITH_AUDIO)
std::unique_ptr<IAudioLoader> audioLoader = IAudioLoader::createFromFile(filename);
if (audioLoader->hasLoaded()) {
return load(*audioLoader);
}
#endif
return false;
}
bool AudioBuffer::loadFromStream(std::unique_ptr<Death::IO::Stream> fileHandle, StringView filename)
{
#if defined(WITH_AUDIO)
std::unique_ptr<IAudioLoader> audioLoader = IAudioLoader::createFromStream(std::move(fileHandle), filename);
if (audioLoader->hasLoaded()) {
return load(*audioLoader);
}
#endif
return false;
}
bool AudioBuffer::loadFromSamples(const unsigned char* bufferPtr, std::int32_t bufferSize)
{
#if defined(WITH_AUDIO)
if (bytesPerSample_ != 0 && numChannels_ != 0 && frequency_ != 0) {
if (bufferSize % (bytesPerSample_ * numChannels_) != 0) {
LOGW("Buffer size is incompatible with format");
}
const ALenum format = alFormat(bytesPerSample_, numChannels_);
alGetError();
// On iOS `alBufferDataStatic()` could be used instead
alBufferData(bufferId_, format, bufferPtr, bufferSize, frequency_);
const ALenum error = alGetError();
DEATH_ASSERT(error == AL_NO_ERROR, ("alBufferData() failed with error 0x{:x}", error), false);
numSamples_ = bufferSize / (numChannels_ * bytesPerSample_);
duration_ = float(numSamples_) / frequency_;
return (error == AL_NO_ERROR);
}
#endif
return false;
}
bool AudioBuffer::load(IAudioLoader& audioLoader)
{
#if defined(WITH_AUDIO)
DEATH_ASSERT(audioLoader.bytesPerSample() == 1 || audioLoader.bytesPerSample() == 2,
("Unsupported number of bytes per sample: {}", audioLoader.bytesPerSample()), false);
DEATH_ASSERT(audioLoader.numChannels() == 1 || audioLoader.numChannels() == 2,
("Unsupported number of channels: {}", audioLoader.numChannels()), false);
bytesPerSample_ = audioLoader.bytesPerSample();
numChannels_ = audioLoader.numChannels();
frequency_ = audioLoader.frequency();
// Buffer size calculated as samples * channels * bytes per samples
const unsigned long int bufferSize = audioLoader.bufferSize();
std::unique_ptr<unsigned char[]> buffer = std::make_unique<unsigned char[]>(bufferSize);
std::unique_ptr<IAudioReader> audioReader = audioLoader.createReader();
audioReader->read(buffer.get(), bufferSize);
return loadFromSamples(buffer.get(), bufferSize);
#else
return false;
#endif
}
}
|
