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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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2431
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80 void DeleteStreamingTrack(StreamingTrackBuffer **buffer)
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81 {
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82 if (!buffer && !*buffer)
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83 return;
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84 auto track = *buffer;
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85
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86 int status;
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87 alGetSourcei(track->source_id, AL_SOURCE_STATE, &status);
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88 if (status == AL_PLAYING)
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89 {
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90 alSourceStop(track->source_id);
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91 if (CheckError()) __debugbreak();
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92 }
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93
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94 int num_processed_buffers = 0;
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95 int num_queued_buffers = 0;
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96 alGetSourcei(track->source_id, AL_BUFFERS_PROCESSED, &num_processed_buffers);
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97 alGetSourcei(track->source_id, AL_BUFFERS_QUEUED, &num_queued_buffers);
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98 int num_track_buffers = num_queued_buffers + num_processed_buffers;
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99 for (int i = 0; i < num_processed_buffers; ++i)
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100 {
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101 unsigned int buffer_id;
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102 alSourceUnqueueBuffers(track->source_id, 1, &buffer_id);
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103 if (!CheckError())
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104 alDeleteBuffers(1, &buffer_id);
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105 else __debugbreak();
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106 }
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107
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108 alDeleteSources(1, &track->source_id);
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109 CheckError();
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110
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111 delete *buffer;
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112 *buffer = nullptr;
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113 }
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2315
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114
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115 void DeleteBuffer16(TrackBuffer **buffer)
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116 {
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117 alDeleteBuffers(1, &(*buffer)->buffer_id);
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118 CheckError();
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119
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120 delete *buffer;
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121 *buffer = nullptr;
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122 }
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123
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124 float alBufferLength(unsigned int buffer)
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125 {
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126 int size, bits, channels, freq;
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127
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128 alGetBufferi(buffer, AL_SIZE, &size);
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129 alGetBufferi(buffer, AL_BITS, &bits);
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130 alGetBufferi(buffer, AL_CHANNELS, &channels);
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131 alGetBufferi(buffer, AL_FREQUENCY, &freq);
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132 if (CheckError())
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133 return 0.0f;
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134
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135 return (ALfloat)((ALuint)size / channels / (bits / 8)) / (ALfloat)freq;
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136 }
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137
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138 StreamingTrackBuffer *CreateStreamingTrack16(int num_channels, int sample_rate, int bytes_per_sample)
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139 {
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140 Assert(bytes_per_sample == 2, "OpenALSoundProvider: unsupported sample size: %u", bytes_per_sample);
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141
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142 ALenum sound_format;
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143 switch (num_channels)
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144 {
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145 case 1: sound_format = AL_FORMAT_MONO16; break;
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146 case 2: sound_format = AL_FORMAT_STEREO16; break;
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147 default:
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148 if (bool multichannel = alIsExtensionPresent("AL_EXT_MCFORMATS"))
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149 {
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150 switch (num_channels)
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151 {
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152 case 4: sound_format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
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153 case 6: sound_format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
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154 case 7: sound_format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
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155 case 8: sound_format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
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156 }
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157 }
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158 Error("Unsupported number of audio channels: %u", num_channels);
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159 }
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160
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161 unsigned int al_source = -1;
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2432
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162 alGetError();
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2315
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163 alGenSources(1, &al_source);
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164 if (CheckError())
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165 return nullptr;
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166
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167 float sound_pos[] = {0.0f, 0.0f, 0.0f},
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168 sound_vel[] = {0.0f, 0.0f, 0.0f};
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169
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170 alSourcei(al_source, AL_LOOPING, AL_FALSE);
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171 alSourcef(al_source, AL_PITCH, 1.0f);
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172 alSourcef(al_source, AL_GAIN, 1.0f);
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173 alSourcefv(al_source, AL_POSITION, sound_pos);
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174 alSourcefv(al_source, AL_VELOCITY, sound_vel);
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175
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176 auto ret = new StreamingTrackBuffer;
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177 ret->source_id = al_source;
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178 ret->sample_format = sound_format;
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179 ret->sample_rate = sample_rate;
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180 return ret;
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181 }
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182
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183 void Stream16(StreamingTrackBuffer *buffer, int num_samples, const void *samples, bool wait = false)
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184 {
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185 int bytes_per_sample = 2;
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186
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187 unsigned int al_buffer;
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188 alGenBuffers(1, &al_buffer);
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189 alBufferData(al_buffer, buffer->sample_format, samples, num_samples * bytes_per_sample, buffer->sample_rate);
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190 if (CheckError())
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191 {
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192 alDeleteBuffers(1, &al_buffer);
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193 return;
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194 }
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195
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196 int num_processed_buffers = 0;
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197 alGetSourcei(buffer->source_id, AL_BUFFERS_PROCESSED, &num_processed_buffers);
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198 for (int i = 0; i < num_processed_buffers; ++i)
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199 {
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200 unsigned int processed_buffer_id;
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201 alSourceUnqueueBuffers(buffer->source_id, 1, &processed_buffer_id);
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202 if (!CheckError())
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203 alDeleteBuffers(1, &processed_buffer_id);
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204 }
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205
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206 alSourceQueueBuffers(buffer->source_id, 1, &al_buffer);
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207 if (CheckError())
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208 {
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209 alDeleteBuffers(1, &al_buffer);
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210 return;
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211 }
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212
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213 volatile int status;
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214 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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215 if (status != AL_PLAYING)
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216 {
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217 float listener_pos[] = {0.0f, 0.0f, 0.0f};
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218 float listener_vel[] = {0.0f, 0.0f, 0.0f};
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219 float listener_orientation[] = {0.0f, 0.0f, -1.0f, // direction
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220 0.0f, 1.0f, 0.0f}; // up vector
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221 alListenerfv(AL_POSITION, listener_pos);
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222 alListenerfv(AL_VELOCITY, listener_vel);
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223 alListenerfv(AL_ORIENTATION, listener_orientation);
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224
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225 alSourcePlay(buffer->source_id);
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226 if (CheckError())
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227 __debugbreak();
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228
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229 if (wait)
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230 {
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231 do
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232 {
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233 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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234 }
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235 while (status == AL_PLAYING);
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236 }
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237 }
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238 }
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239
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240
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241
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242
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243 TrackBuffer *CreateTrack16(int num_channels, int sample_rate, int bytes_per_sample, int num_samples, const void *samples)
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244 {
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245 Assert(bytes_per_sample == 2, "OpenALSoundProvider: unsupported sample size: %u", bytes_per_sample);
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246
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247 ALenum sound_format;
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248 switch (num_channels)
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249 {
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250 case 1: sound_format = AL_FORMAT_MONO16; break;
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251 case 2: sound_format = AL_FORMAT_STEREO16; break;
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252 default:
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253 if (bool multichannel = alIsExtensionPresent("AL_EXT_MCFORMATS"))
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254 {
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255 switch (num_channels)
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256 {
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257 case 4: sound_format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
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258 case 6: sound_format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
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259 case 7: sound_format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
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260 case 8: sound_format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
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261 }
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262 }
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263 Error("Unsupported number of audio channels: %u", num_channels);
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264 }
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265
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266 unsigned int al_source = -1;
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267 alGenSources(1, &al_source);
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268 if (CheckError())
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269 return nullptr;
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270
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271 float sound_pos[] = {0.0f, 0.0f, 0.0f},
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272 sound_vel[] = {0.0f, 0.0f, 0.0f};
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273
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274 alSourcei(al_source, AL_LOOPING, AL_FALSE);
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275 alSourcef(al_source, AL_PITCH, 1.0f);
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276 alSourcef(al_source, AL_GAIN, 1.0f);
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277 alSourcefv(al_source, AL_POSITION, sound_pos);
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278 alSourcefv(al_source, AL_VELOCITY, sound_vel);
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279
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280 unsigned int al_buffer = -1;
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281 alGenBuffers(1, &al_buffer);
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282 if (CheckError())
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283 {
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284 alDeleteSources(1, &al_source);
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285 return nullptr;
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286 }
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287
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288 alBufferData(al_buffer, sound_format, samples, num_samples * bytes_per_sample, sample_rate);
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289 if (CheckError())
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290 {
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291 alDeleteSources(1, &al_source);
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292 alDeleteBuffers(1, &al_buffer);
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293 return nullptr;
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294 }
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295
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296 alSourcei(al_source, AL_BUFFER, al_buffer);
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297 if (CheckError())
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298 {
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299 alDeleteSources(1, &al_source);
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300 alDeleteBuffers(1, &al_buffer);
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301 return nullptr;
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302 }
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303
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304 auto ret = new TrackBuffer;
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305 ret->source_id = al_source;
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306 ret->buffer_id = al_buffer;
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307 return ret;
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308 }
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309
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310
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311 void PlayTrack16(TrackBuffer *buffer, bool loop = false, bool wait = false)
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312 {
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313 volatile int status;
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314 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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315 if (status == AL_PLAYING)
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316 Error("Already playing");
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317 else
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318 {
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319 float listener_pos[] = {0.0f, 0.0f, 0.0f};
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320 float listener_vel[] = {0.0f, 0.0f, 0.0f};
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321 float listener_orientation[] = {0.0f, 0.0f, -1.0f, // direction
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322 0.0f, 1.0f, 0.0f}; // up vector
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323 alListenerfv(AL_POSITION, listener_pos);
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324 alListenerfv(AL_VELOCITY, listener_vel);
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325 alListenerfv(AL_ORIENTATION, listener_orientation);
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326
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327 alSourcei(buffer->source_id, AL_LOOPING, loop ? AL_TRUE : AL_FALSE);
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328 alSourcePlay(buffer->source_id);
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329 if (CheckError())
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330 __debugbreak();
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331
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332 if (wait && !loop)
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333 {
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334 float track_length = alBufferLength(buffer->buffer_id);
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335 do
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336 {
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337 float track_offset = 0;
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338 alGetSourcef(buffer->source_id, AL_SEC_OFFSET, &track_offset);
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339 log("playing: %.4f/%.4f\n", track_offset, track_length);
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340
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341 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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342 }
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343 while (status == AL_PLAYING);
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344 }
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345 }
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346 }
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347
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348
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349
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350 protected:
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351 ALCdevice *device;
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352 ALCcontext *context;
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353
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354
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355 bool CheckError()
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356 {
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357 ALenum code1 = alGetError();
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358 if (code1 != AL_NO_ERROR)
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359 {
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360 DWORD w;
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361 const char *message = alGetString(code1);
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362 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlenA(message), &w, nullptr);
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363 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), "\n", 1, &w, nullptr);
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364 return true;
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365 }
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366
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367 ALenum code2 = alcGetError(device);
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368 if (code2 != ALC_NO_ERROR)
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369 {
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370 DWORD w;
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371 const char *message = alcGetString(device, code2);
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372 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlenA(message), &w, nullptr);
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373 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), "\n", 1, &w, nullptr);
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374 return true;
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375 }
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376 return false;
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377 }
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378 }; |
