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comparison Media/Audio/OpenALSoundProvider.h @ 2502:a77c34acdbc9

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Media folder
author Ritor1
date Fri, 19 Sep 2014 05:13:32 +0600
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children a902abdfc7f2
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2501:0ff6a9e9bf7f 2502:a77c34acdbc9
1 #pragma once
2 #include "lib/OpenAL/al.h"
3 #include "lib/OpenAL/alc.h"
4 #pragma comment(lib, "OpenAL32.lib")
5
6 #include "Engine/stuff.h"
7 #include "Engine/Log.h"
8
9 class OpenALSoundProvider
10 {
11 public:
12 struct TrackBuffer
13 {
14 unsigned int source_id;
15 unsigned int buffer_id;
16 };
17
18 struct StreamingTrackBuffer
19 {
20 unsigned int source_id;
21 ALenum sample_format;
22 int sample_rate;
23 };
24
25 inline OpenALSoundProvider()
26 {
27 this->device = nullptr;
28 this->context = nullptr;
29 }
30
31 inline ~OpenALSoundProvider()
32 {
33 Release();
34 }
35
36 inline bool Initialize()
37 {
38
39 auto device_names = alcGetString(nullptr, ALC_ALL_DEVICES_SPECIFIER);
40 if (!device_names)
41 {
42 device_names = alcGetString(nullptr, ALC_DEVICE_SPECIFIER);
43 }
44 if (device_names)
45 {
46 for (auto device_name = device_names; device_name[0]; device_name += strlen(device_name))
47 {
48 continue;
49 }
50 }
51
52 device = alcOpenDevice(nullptr);
53 if (!device || CheckError())
54 {
55 Log::Warning(L"Default sound device not present");
56 return false;
57 }
58
59 context = alcCreateContext(device, nullptr);
60 if (!context || CheckError())
61 return Release(), false;
62
63 alcMakeContextCurrent(context);
64
65 bool eax2 = alIsExtensionPresent("EAX2.0");
66 bool eax3 = alIsExtensionPresent("EAX3.0");
67 bool eax4 = alIsExtensionPresent("EAX4.0");
68 bool eax5 = alIsExtensionPresent("EAX5.0");
69
70 auto vendor = alGetString(AL_VENDOR);
71 auto version = alGetString(AL_VERSION);
72 auto extensions = alcGetString(device, ALC_EXTENSIONS);
73
74 return true;
75 }
76
77 void Release()
78 {
79 alcMakeContextCurrent(nullptr);
80 if (context)
81 {
82 alcDestroyContext(context);
83 }
84 if (device)
85 {
86 alcCloseDevice(device);
87 }
88 }
89
90 void DeleteStreamingTrack(StreamingTrackBuffer **buffer)
91 {
92 if (!buffer && !*buffer)
93 return;
94 auto track = *buffer;
95
96 int status;
97 alGetSourcei(track->source_id, AL_SOURCE_STATE, &status);
98 if (status == AL_PLAYING)
99 {
100 alSourceStop(track->source_id);
101 if (CheckError()) __debugbreak();
102 }
103
104 int num_processed_buffers = 0;
105 int num_queued_buffers = 0;
106 alGetSourcei(track->source_id, AL_BUFFERS_PROCESSED, &num_processed_buffers);
107 alGetSourcei(track->source_id, AL_BUFFERS_QUEUED, &num_queued_buffers);
108 int num_track_buffers = num_queued_buffers + num_processed_buffers;
109 for (int i = 0; i < num_processed_buffers; ++i)
110 {
111 unsigned int buffer_id;
112 alSourceUnqueueBuffers(track->source_id, 1, &buffer_id);
113 if (!CheckError())
114 alDeleteBuffers(1, &buffer_id);
115 else __debugbreak();
116 }
117
118 alDeleteSources(1, &track->source_id);
119 CheckError();
120
121 delete *buffer;
122 *buffer = nullptr;
123 }
124
125 void DeleteBuffer16(TrackBuffer **buffer)
126 {
127 alDeleteBuffers(1, &(*buffer)->buffer_id);
128 CheckError();
129
130 delete *buffer;
131 *buffer = nullptr;
132 }
133
134 float alBufferLength(unsigned int buffer)
135 {
136 int size, bits, channels, freq;
137
138 alGetBufferi(buffer, AL_SIZE, &size);
139 alGetBufferi(buffer, AL_BITS, &bits);
140 alGetBufferi(buffer, AL_CHANNELS, &channels);
141 alGetBufferi(buffer, AL_FREQUENCY, &freq);
142 if (CheckError())
143 return 0.0f;
144
145 return (ALfloat)((ALuint)size / channels / (bits / 8)) / (ALfloat)freq;
146 }
147
148 StreamingTrackBuffer *CreateStreamingTrack16(int num_channels, int sample_rate, int bytes_per_sample)
149 {
150 Assert(bytes_per_sample == 2, "OpenALSoundProvider: unsupported sample size: %u", bytes_per_sample);
151
152 ALenum sound_format;
153 switch (num_channels)
154 {
155 case 1: sound_format = AL_FORMAT_MONO16; break;
156 case 2: sound_format = AL_FORMAT_STEREO16; break;
157 default:
158 if (bool multichannel = alIsExtensionPresent("AL_EXT_MCFORMATS"))
159 {
160 switch (num_channels)
161 {
162 case 4: sound_format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
163 case 6: sound_format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
164 case 7: sound_format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
165 case 8: sound_format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
166 }
167 }
168 Error("Unsupported number of audio channels: %u", num_channels);
169 }
170
171 unsigned int al_source = -1;
172 alGetError();
173 alGenSources(1, &al_source);
174 if (CheckError())
175 return nullptr;
176
177 float sound_pos[] = {0.0f, 0.0f, 0.0f},
178 sound_vel[] = {0.0f, 0.0f, 0.0f};
179
180 alSourcei(al_source, AL_LOOPING, AL_FALSE);
181 alSourcef(al_source, AL_PITCH, 1.0f);
182 alSourcef(al_source, AL_GAIN, 1.0f);
183 alSourcefv(al_source, AL_POSITION, sound_pos);
184 alSourcefv(al_source, AL_VELOCITY, sound_vel);
185
186 auto ret = new StreamingTrackBuffer;
187 ret->source_id = al_source;
188 ret->sample_format = sound_format;
189 ret->sample_rate = sample_rate;
190 return ret;
191 }
192
193 void Stream16(StreamingTrackBuffer *buffer, int num_samples, const void *samples, bool wait = false)
194 {
195 int bytes_per_sample = 2;
196
197 unsigned int al_buffer;
198 alGenBuffers(1, &al_buffer);
199 alBufferData(al_buffer, buffer->sample_format, samples, num_samples * bytes_per_sample, buffer->sample_rate);
200 if (CheckError())
201 {
202 alDeleteBuffers(1, &al_buffer);
203 return;
204 }
205
206 int num_processed_buffers = 0;
207 alGetSourcei(buffer->source_id, AL_BUFFERS_PROCESSED, &num_processed_buffers);
208 for (int i = 0; i < num_processed_buffers; ++i)
209 {
210 unsigned int processed_buffer_id;
211 alSourceUnqueueBuffers(buffer->source_id, 1, &processed_buffer_id);
212 if (!CheckError())
213 alDeleteBuffers(1, &processed_buffer_id);
214 }
215
216 alSourceQueueBuffers(buffer->source_id, 1, &al_buffer);
217 if (CheckError())
218 {
219 alDeleteBuffers(1, &al_buffer);
220 return;
221 }
222
223 volatile int status;
224 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
225 if (status != AL_PLAYING)
226 {
227 float listener_pos[] = {0.0f, 0.0f, 0.0f};
228 float listener_vel[] = {0.0f, 0.0f, 0.0f};
229 float listener_orientation[] = {0.0f, 0.0f, -1.0f, // direction
230 0.0f, 1.0f, 0.0f}; // up vector
231 alListenerfv(AL_POSITION, listener_pos);
232 alListenerfv(AL_VELOCITY, listener_vel);
233 alListenerfv(AL_ORIENTATION, listener_orientation);
234
235 alSourcePlay(buffer->source_id);
236 if (CheckError())
237 __debugbreak();
238
239 if (wait)
240 {
241 do
242 {
243 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
244 }
245 while (status == AL_PLAYING);
246 }
247 }
248 }
249
250
251
252
253 TrackBuffer *CreateTrack16(int num_channels, int sample_rate, int bytes_per_sample, int num_samples, const void *samples)
254 {
255 Assert(bytes_per_sample == 2, "OpenALSoundProvider: unsupported sample size: %u", bytes_per_sample);
256
257 ALenum sound_format;
258 switch (num_channels)
259 {
260 case 1: sound_format = AL_FORMAT_MONO16; break;
261 case 2: sound_format = AL_FORMAT_STEREO16; break;
262 default:
263 if (bool multichannel = alIsExtensionPresent("AL_EXT_MCFORMATS"))
264 {
265 switch (num_channels)
266 {
267 case 4: sound_format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
268 case 6: sound_format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
269 case 7: sound_format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
270 case 8: sound_format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
271 }
272 }
273 Error("Unsupported number of audio channels: %u", num_channels);
274 }
275
276 unsigned int al_source = -1;
277 alGenSources(1, &al_source);
278 if (CheckError())
279 return nullptr;
280
281 float sound_pos[] = {0.0f, 0.0f, 0.0f},
282 sound_vel[] = {0.0f, 0.0f, 0.0f};
283
284 alSourcei(al_source, AL_LOOPING, AL_FALSE);
285 alSourcef(al_source, AL_PITCH, 1.0f);
286 alSourcef(al_source, AL_GAIN, 1.0f);
287 alSourcefv(al_source, AL_POSITION, sound_pos);
288 alSourcefv(al_source, AL_VELOCITY, sound_vel);
289
290 unsigned int al_buffer = -1;
291 alGenBuffers(1, &al_buffer);
292 if (CheckError())
293 {
294 alDeleteSources(1, &al_source);
295 return nullptr;
296 }
297
298 alBufferData(al_buffer, sound_format, samples, num_samples * bytes_per_sample, sample_rate);
299 if (CheckError())
300 {
301 alDeleteSources(1, &al_source);
302 alDeleteBuffers(1, &al_buffer);
303 return nullptr;
304 }
305
306 alSourcei(al_source, AL_BUFFER, al_buffer);
307 if (CheckError())
308 {
309 alDeleteSources(1, &al_source);
310 alDeleteBuffers(1, &al_buffer);
311 return nullptr;
312 }
313
314 auto ret = new TrackBuffer;
315 ret->source_id = al_source;
316 ret->buffer_id = al_buffer;
317 return ret;
318 }
319
320
321 void PlayTrack16(TrackBuffer *buffer, bool loop = false, bool wait = false)
322 {
323 volatile int status;
324 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
325 if (status == AL_PLAYING)
326 Error("Already playing");
327 else
328 {
329 float listener_pos[] = {0.0f, 0.0f, 0.0f};
330 float listener_vel[] = {0.0f, 0.0f, 0.0f};
331 float listener_orientation[] = {0.0f, 0.0f, -1.0f, // direction
332 0.0f, 1.0f, 0.0f}; // up vector
333 alListenerfv(AL_POSITION, listener_pos);
334 alListenerfv(AL_VELOCITY, listener_vel);
335 alListenerfv(AL_ORIENTATION, listener_orientation);
336
337 alSourcei(buffer->source_id, AL_LOOPING, loop ? AL_TRUE : AL_FALSE);
338 alSourcePlay(buffer->source_id);
339 if (CheckError())
340 __debugbreak();
341
342 if (wait && !loop)
343 {
344 float track_length = alBufferLength(buffer->buffer_id);
345 do
346 {
347 float track_offset = 0;
348 alGetSourcef(buffer->source_id, AL_SEC_OFFSET, &track_offset);
349 log("playing: %.4f/%.4f\n", track_offset, track_length);
350
351 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
352 }
353 while (status == AL_PLAYING);
354 }
355 }
356 }
357
358
359
360 protected:
361 ALCdevice *device;
362 ALCcontext *context;
363
364
365 bool CheckError()
366 {
367 ALenum code1 = alGetError();
368 if (code1 != AL_NO_ERROR)
369 {
370 DWORD w;
371 const char *message = alGetString(code1);
372 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlenA(message), &w, nullptr);
373 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), "\n", 1, &w, nullptr);
374 return true;
375 }
376
377 ALenum code2 = alcGetError(device);
378 if (code2 != ALC_NO_ERROR)
379 {
380 DWORD w;
381 const char *message = alcGetString(device, code2);
382 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlenA(message), &w, nullptr);
383 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), "\n", 1, &w, nullptr);
384 return true;
385 }
386 return false;
387 }
388 };