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2315
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1 #pragma once
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2 #include "lib/OpenAL/al.h"
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3 #include "lib/OpenAL/alc.h"
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4 #pragma comment(lib, "OpenAL32.lib")
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5
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6 #include "stuff.h"
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7
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8 class OpenALSoundProvider
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9 {
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10 public:
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11 struct TrackBuffer
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12 {
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13 unsigned int source_id;
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14 unsigned int buffer_id;
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15 };
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16
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17 struct StreamingTrackBuffer
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18 {
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19 unsigned int source_id;
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20 ALenum sample_format;
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21 int sample_rate;
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22 };
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23
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24 inline OpenALSoundProvider()
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25 {
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26 this->device = nullptr;
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27 this->context = nullptr;
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28 }
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29
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30 inline bool Initialize()
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31 {
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32 auto device_names = alcGetString(nullptr, ALC_ALL_DEVICES_SPECIFIER);
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33 if (!device_names)
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34 device_names = alcGetString(nullptr, ALC_DEVICE_SPECIFIER);
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35 if (device_names)
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36 {
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37 for (auto device_name = device_names; device_name[0]; device_name += strlen(device_name))
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38 {
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39 continue;
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40 }
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41 }
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42
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43 device = alcOpenDevice(nullptr);
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44 if (!device || CheckError())
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45 return false;
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46
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47 context = alcCreateContext(device, nullptr);
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48 if (!context || CheckError())
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49 return Release(), false;
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50
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51 alcMakeContextCurrent(context);
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52
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53 bool eax2 = alIsExtensionPresent("EAX2.0");
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54 bool eax3 = alIsExtensionPresent("EAX3.0");
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55 bool eax4 = alIsExtensionPresent("EAX4.0");
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56 bool eax5 = alIsExtensionPresent("EAX5.0");
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57
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58 auto vendor = alGetString(AL_VENDOR);
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59 auto version = alGetString(AL_VERSION);
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60 auto extensions = alcGetString(device, ALC_EXTENSIONS);
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61
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62 return true;
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63 }
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64
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65 void Release()
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66 {
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67 alcMakeContextCurrent(nullptr);
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68 if (context)
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69 {
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70 alcDestroyContext(context);
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71 context = nullptr;
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72 }
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73 if (device)
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74 {
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75 alcCloseDevice(device);
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76 device = nullptr;
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77 }
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78 }
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79
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80
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81 void DeleteBuffer16(TrackBuffer **buffer)
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82 {
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83 alDeleteBuffers(1, &(*buffer)->buffer_id);
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84 CheckError();
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85
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86 delete *buffer;
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87 *buffer = nullptr;
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88 }
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89
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90 float alBufferLength(unsigned int buffer)
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91 {
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92 int size, bits, channels, freq;
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93
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94 alGetBufferi(buffer, AL_SIZE, &size);
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95 alGetBufferi(buffer, AL_BITS, &bits);
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96 alGetBufferi(buffer, AL_CHANNELS, &channels);
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97 alGetBufferi(buffer, AL_FREQUENCY, &freq);
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98 if (CheckError())
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99 return 0.0f;
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100
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101 return (ALfloat)((ALuint)size / channels / (bits / 8)) / (ALfloat)freq;
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102 }
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103
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104 StreamingTrackBuffer *CreateStreamingTrack16(int num_channels, int sample_rate, int bytes_per_sample)
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105 {
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106 Assert(bytes_per_sample == 2, "OpenALSoundProvider: unsupported sample size: %u", bytes_per_sample);
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107
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108 ALenum sound_format;
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109 switch (num_channels)
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110 {
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111 case 1: sound_format = AL_FORMAT_MONO16; break;
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112 case 2: sound_format = AL_FORMAT_STEREO16; break;
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113 default:
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114 if (bool multichannel = alIsExtensionPresent("AL_EXT_MCFORMATS"))
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115 {
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116 switch (num_channels)
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117 {
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118 case 4: sound_format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
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119 case 6: sound_format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
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120 case 7: sound_format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
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121 case 8: sound_format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
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122 }
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123 }
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124 Error("Unsupported number of audio channels: %u", num_channels);
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125 }
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126
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127 unsigned int al_source = -1;
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128 alGenSources(1, &al_source);
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129 if (CheckError())
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130 return nullptr;
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131
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132 float sound_pos[] = {0.0f, 0.0f, 0.0f},
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133 sound_vel[] = {0.0f, 0.0f, 0.0f};
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134
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135 alSourcei(al_source, AL_LOOPING, AL_FALSE);
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136 alSourcef(al_source, AL_PITCH, 1.0f);
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137 alSourcef(al_source, AL_GAIN, 1.0f);
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138 alSourcefv(al_source, AL_POSITION, sound_pos);
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139 alSourcefv(al_source, AL_VELOCITY, sound_vel);
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140
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141 auto ret = new StreamingTrackBuffer;
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142 ret->source_id = al_source;
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143 ret->sample_format = sound_format;
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144 ret->sample_rate = sample_rate;
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145 return ret;
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146 }
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147
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148 void Stream16(StreamingTrackBuffer *buffer, int num_samples, const void *samples, bool wait = false)
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149 {
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150 int bytes_per_sample = 2;
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151
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152 unsigned int al_buffer;
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153 alGenBuffers(1, &al_buffer);
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154 alBufferData(al_buffer, buffer->sample_format, samples, num_samples * bytes_per_sample, buffer->sample_rate);
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155 if (CheckError())
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156 {
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157 alDeleteBuffers(1, &al_buffer);
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158 return;
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159 }
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160
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161 int num_processed_buffers = 0;
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162 alGetSourcei(buffer->source_id, AL_BUFFERS_PROCESSED, &num_processed_buffers);
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163 for (int i = 0; i < num_processed_buffers; ++i)
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164 {
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165 unsigned int processed_buffer_id;
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166 alSourceUnqueueBuffers(buffer->source_id, 1, &processed_buffer_id);
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167 if (!CheckError())
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168 alDeleteBuffers(1, &processed_buffer_id);
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169 }
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170
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171 alSourceQueueBuffers(buffer->source_id, 1, &al_buffer);
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172 if (CheckError())
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173 {
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174 alDeleteBuffers(1, &al_buffer);
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175 return;
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176 }
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177
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178 volatile int status;
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179 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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180 if (status != AL_PLAYING)
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181 {
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182 float listener_pos[] = {0.0f, 0.0f, 0.0f};
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183 float listener_vel[] = {0.0f, 0.0f, 0.0f};
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184 float listener_orientation[] = {0.0f, 0.0f, -1.0f, // direction
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185 0.0f, 1.0f, 0.0f}; // up vector
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186 alListenerfv(AL_POSITION, listener_pos);
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187 alListenerfv(AL_VELOCITY, listener_vel);
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188 alListenerfv(AL_ORIENTATION, listener_orientation);
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189
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190 alSourcePlay(buffer->source_id);
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191 if (CheckError())
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192 __debugbreak();
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193
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194 if (wait)
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195 {
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196 do
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197 {
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198 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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199 }
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200 while (status == AL_PLAYING);
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201 }
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202 }
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203 }
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204
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205
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206
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207
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208 TrackBuffer *CreateTrack16(int num_channels, int sample_rate, int bytes_per_sample, int num_samples, const void *samples)
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209 {
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210 Assert(bytes_per_sample == 2, "OpenALSoundProvider: unsupported sample size: %u", bytes_per_sample);
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211
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212 ALenum sound_format;
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213 switch (num_channels)
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214 {
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215 case 1: sound_format = AL_FORMAT_MONO16; break;
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216 case 2: sound_format = AL_FORMAT_STEREO16; break;
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217 default:
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218 if (bool multichannel = alIsExtensionPresent("AL_EXT_MCFORMATS"))
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219 {
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220 switch (num_channels)
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221 {
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222 case 4: sound_format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
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223 case 6: sound_format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
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224 case 7: sound_format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
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225 case 8: sound_format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
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226 }
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227 }
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228 Error("Unsupported number of audio channels: %u", num_channels);
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229 }
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230
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231 unsigned int al_source = -1;
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232 alGenSources(1, &al_source);
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233 if (CheckError())
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234 return nullptr;
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235
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236 float sound_pos[] = {0.0f, 0.0f, 0.0f},
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237 sound_vel[] = {0.0f, 0.0f, 0.0f};
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238
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239 alSourcei(al_source, AL_LOOPING, AL_FALSE);
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240 alSourcef(al_source, AL_PITCH, 1.0f);
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241 alSourcef(al_source, AL_GAIN, 1.0f);
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242 alSourcefv(al_source, AL_POSITION, sound_pos);
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243 alSourcefv(al_source, AL_VELOCITY, sound_vel);
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244
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245 unsigned int al_buffer = -1;
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246 alGenBuffers(1, &al_buffer);
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247 if (CheckError())
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248 {
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249 alDeleteSources(1, &al_source);
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250 return nullptr;
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251 }
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252
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253 alBufferData(al_buffer, sound_format, samples, num_samples * bytes_per_sample, sample_rate);
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254 if (CheckError())
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255 {
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256 alDeleteSources(1, &al_source);
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257 alDeleteBuffers(1, &al_buffer);
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258 return nullptr;
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259 }
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260
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261 alSourcei(al_source, AL_BUFFER, al_buffer);
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262 if (CheckError())
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263 {
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264 alDeleteSources(1, &al_source);
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265 alDeleteBuffers(1, &al_buffer);
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266 return nullptr;
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267 }
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268
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269 auto ret = new TrackBuffer;
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270 ret->source_id = al_source;
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271 ret->buffer_id = al_buffer;
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272 return ret;
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273 }
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274
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275
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276 void PlayTrack16(TrackBuffer *buffer, bool loop = false, bool wait = false)
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277 {
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278 volatile int status;
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279 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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280 if (status == AL_PLAYING)
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281 Error("Already playing");
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282 else
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283 {
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284 float listener_pos[] = {0.0f, 0.0f, 0.0f};
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285 float listener_vel[] = {0.0f, 0.0f, 0.0f};
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286 float listener_orientation[] = {0.0f, 0.0f, -1.0f, // direction
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287 0.0f, 1.0f, 0.0f}; // up vector
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288 alListenerfv(AL_POSITION, listener_pos);
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289 alListenerfv(AL_VELOCITY, listener_vel);
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290 alListenerfv(AL_ORIENTATION, listener_orientation);
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291
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292 alSourcei(buffer->source_id, AL_LOOPING, loop ? AL_TRUE : AL_FALSE);
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293 alSourcePlay(buffer->source_id);
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294 if (CheckError())
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295 __debugbreak();
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296
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297 if (wait && !loop)
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298 {
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299 float track_length = alBufferLength(buffer->buffer_id);
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300 do
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301 {
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302 float track_offset = 0;
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303 alGetSourcef(buffer->source_id, AL_SEC_OFFSET, &track_offset);
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304 log("playing: %.4f/%.4f\n", track_offset, track_length);
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305
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306 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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307 }
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308 while (status == AL_PLAYING);
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309 }
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310 }
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311 }
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312
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313
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314
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315 protected:
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316 ALCdevice *device;
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317 ALCcontext *context;
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318
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319
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320 bool CheckError()
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321 {
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322 ALenum code1 = alGetError();
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323 if (code1 != AL_NO_ERROR)
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324 {
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325 DWORD w;
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326 const char *message = alGetString(code1);
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327 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlenA(message), &w, nullptr);
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328 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), "\n", 1, &w, nullptr);
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329 return true;
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330 }
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331
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332 ALenum code2 = alcGetError(device);
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333 if (code2 != ALC_NO_ERROR)
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334 {
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335 DWORD w;
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336 const char *message = alcGetString(device, code2);
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337 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlenA(message), &w, nullptr);
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338 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), "\n", 1, &w, nullptr);
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339 return true;
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340 }
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341 return false;
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342 }
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343 }; |
