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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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2440
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30 inline ~OpenALSoundProvider()
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31 {
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32 Release();
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33 }
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34
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2315
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35 inline bool Initialize()
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36 {
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2440
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37
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2315
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38 auto device_names = alcGetString(nullptr, ALC_ALL_DEVICES_SPECIFIER);
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39 if (!device_names)
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2440
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40 {
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2315
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41 device_names = alcGetString(nullptr, ALC_DEVICE_SPECIFIER);
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2440
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42 }
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2315
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43 if (device_names)
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44 {
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45 for (auto device_name = device_names; device_name[0]; device_name += strlen(device_name))
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46 {
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47 continue;
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48 }
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49 }
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50
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51 device = alcOpenDevice(nullptr);
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52 if (!device || CheckError())
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53 return false;
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54
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55 context = alcCreateContext(device, nullptr);
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56 if (!context || CheckError())
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57 return Release(), false;
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58
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59 alcMakeContextCurrent(context);
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60
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61 bool eax2 = alIsExtensionPresent("EAX2.0");
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62 bool eax3 = alIsExtensionPresent("EAX3.0");
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63 bool eax4 = alIsExtensionPresent("EAX4.0");
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64 bool eax5 = alIsExtensionPresent("EAX5.0");
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65
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66 auto vendor = alGetString(AL_VENDOR);
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67 auto version = alGetString(AL_VERSION);
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68 auto extensions = alcGetString(device, ALC_EXTENSIONS);
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69
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70 return true;
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71 }
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72
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73 void Release()
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74 {
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75 alcMakeContextCurrent(nullptr);
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76 if (context)
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77 {
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78 alcDestroyContext(context);
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79 }
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80 if (device)
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81 {
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82 alcCloseDevice(device);
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83 }
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84 }
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85
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2431
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86 void DeleteStreamingTrack(StreamingTrackBuffer **buffer)
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87 {
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88 if (!buffer && !*buffer)
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89 return;
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90 auto track = *buffer;
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91
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92 int status;
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93 alGetSourcei(track->source_id, AL_SOURCE_STATE, &status);
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94 if (status == AL_PLAYING)
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95 {
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96 alSourceStop(track->source_id);
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97 if (CheckError()) __debugbreak();
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98 }
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99
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100 int num_processed_buffers = 0;
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101 int num_queued_buffers = 0;
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102 alGetSourcei(track->source_id, AL_BUFFERS_PROCESSED, &num_processed_buffers);
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103 alGetSourcei(track->source_id, AL_BUFFERS_QUEUED, &num_queued_buffers);
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104 int num_track_buffers = num_queued_buffers + num_processed_buffers;
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105 for (int i = 0; i < num_processed_buffers; ++i)
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106 {
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107 unsigned int buffer_id;
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108 alSourceUnqueueBuffers(track->source_id, 1, &buffer_id);
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109 if (!CheckError())
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110 alDeleteBuffers(1, &buffer_id);
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111 else __debugbreak();
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112 }
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113
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114 alDeleteSources(1, &track->source_id);
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115 CheckError();
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116
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117 delete *buffer;
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118 *buffer = nullptr;
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119 }
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2315
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120
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121 void DeleteBuffer16(TrackBuffer **buffer)
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122 {
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123 alDeleteBuffers(1, &(*buffer)->buffer_id);
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124 CheckError();
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125
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126 delete *buffer;
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127 *buffer = nullptr;
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128 }
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129
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130 float alBufferLength(unsigned int buffer)
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131 {
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132 int size, bits, channels, freq;
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133
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134 alGetBufferi(buffer, AL_SIZE, &size);
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135 alGetBufferi(buffer, AL_BITS, &bits);
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136 alGetBufferi(buffer, AL_CHANNELS, &channels);
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137 alGetBufferi(buffer, AL_FREQUENCY, &freq);
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138 if (CheckError())
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139 return 0.0f;
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140
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141 return (ALfloat)((ALuint)size / channels / (bits / 8)) / (ALfloat)freq;
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142 }
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143
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144 StreamingTrackBuffer *CreateStreamingTrack16(int num_channels, int sample_rate, int bytes_per_sample)
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145 {
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146 Assert(bytes_per_sample == 2, "OpenALSoundProvider: unsupported sample size: %u", bytes_per_sample);
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147
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148 ALenum sound_format;
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149 switch (num_channels)
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150 {
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151 case 1: sound_format = AL_FORMAT_MONO16; break;
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152 case 2: sound_format = AL_FORMAT_STEREO16; break;
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153 default:
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154 if (bool multichannel = alIsExtensionPresent("AL_EXT_MCFORMATS"))
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155 {
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156 switch (num_channels)
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157 {
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158 case 4: sound_format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
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159 case 6: sound_format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
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160 case 7: sound_format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
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161 case 8: sound_format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
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162 }
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163 }
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164 Error("Unsupported number of audio channels: %u", num_channels);
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165 }
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166
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167 unsigned int al_source = -1;
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2432
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168 alGetError();
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2315
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169 alGenSources(1, &al_source);
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170 if (CheckError())
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171 return nullptr;
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172
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173 float sound_pos[] = {0.0f, 0.0f, 0.0f},
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174 sound_vel[] = {0.0f, 0.0f, 0.0f};
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175
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176 alSourcei(al_source, AL_LOOPING, AL_FALSE);
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177 alSourcef(al_source, AL_PITCH, 1.0f);
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178 alSourcef(al_source, AL_GAIN, 1.0f);
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179 alSourcefv(al_source, AL_POSITION, sound_pos);
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180 alSourcefv(al_source, AL_VELOCITY, sound_vel);
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181
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182 auto ret = new StreamingTrackBuffer;
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183 ret->source_id = al_source;
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184 ret->sample_format = sound_format;
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185 ret->sample_rate = sample_rate;
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186 return ret;
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187 }
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188
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189 void Stream16(StreamingTrackBuffer *buffer, int num_samples, const void *samples, bool wait = false)
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190 {
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191 int bytes_per_sample = 2;
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192
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193 unsigned int al_buffer;
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194 alGenBuffers(1, &al_buffer);
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195 alBufferData(al_buffer, buffer->sample_format, samples, num_samples * bytes_per_sample, buffer->sample_rate);
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196 if (CheckError())
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197 {
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198 alDeleteBuffers(1, &al_buffer);
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199 return;
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200 }
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201
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202 int num_processed_buffers = 0;
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203 alGetSourcei(buffer->source_id, AL_BUFFERS_PROCESSED, &num_processed_buffers);
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204 for (int i = 0; i < num_processed_buffers; ++i)
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205 {
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206 unsigned int processed_buffer_id;
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207 alSourceUnqueueBuffers(buffer->source_id, 1, &processed_buffer_id);
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208 if (!CheckError())
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209 alDeleteBuffers(1, &processed_buffer_id);
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210 }
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211
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212 alSourceQueueBuffers(buffer->source_id, 1, &al_buffer);
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213 if (CheckError())
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214 {
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215 alDeleteBuffers(1, &al_buffer);
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216 return;
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217 }
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218
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219 volatile int status;
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220 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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221 if (status != AL_PLAYING)
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222 {
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223 float listener_pos[] = {0.0f, 0.0f, 0.0f};
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224 float listener_vel[] = {0.0f, 0.0f, 0.0f};
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225 float listener_orientation[] = {0.0f, 0.0f, -1.0f, // direction
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226 0.0f, 1.0f, 0.0f}; // up vector
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227 alListenerfv(AL_POSITION, listener_pos);
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228 alListenerfv(AL_VELOCITY, listener_vel);
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229 alListenerfv(AL_ORIENTATION, listener_orientation);
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230
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231 alSourcePlay(buffer->source_id);
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232 if (CheckError())
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233 __debugbreak();
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234
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235 if (wait)
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236 {
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237 do
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238 {
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239 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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240 }
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241 while (status == AL_PLAYING);
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242 }
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243 }
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244 }
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245
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246
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247
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248
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249 TrackBuffer *CreateTrack16(int num_channels, int sample_rate, int bytes_per_sample, int num_samples, const void *samples)
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250 {
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251 Assert(bytes_per_sample == 2, "OpenALSoundProvider: unsupported sample size: %u", bytes_per_sample);
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252
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253 ALenum sound_format;
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254 switch (num_channels)
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255 {
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256 case 1: sound_format = AL_FORMAT_MONO16; break;
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257 case 2: sound_format = AL_FORMAT_STEREO16; break;
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258 default:
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259 if (bool multichannel = alIsExtensionPresent("AL_EXT_MCFORMATS"))
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260 {
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261 switch (num_channels)
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262 {
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263 case 4: sound_format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
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264 case 6: sound_format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
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265 case 7: sound_format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
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266 case 8: sound_format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
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267 }
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268 }
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269 Error("Unsupported number of audio channels: %u", num_channels);
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270 }
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271
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272 unsigned int al_source = -1;
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273 alGenSources(1, &al_source);
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274 if (CheckError())
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275 return nullptr;
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276
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277 float sound_pos[] = {0.0f, 0.0f, 0.0f},
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278 sound_vel[] = {0.0f, 0.0f, 0.0f};
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279
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280 alSourcei(al_source, AL_LOOPING, AL_FALSE);
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281 alSourcef(al_source, AL_PITCH, 1.0f);
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282 alSourcef(al_source, AL_GAIN, 1.0f);
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283 alSourcefv(al_source, AL_POSITION, sound_pos);
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284 alSourcefv(al_source, AL_VELOCITY, sound_vel);
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285
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286 unsigned int al_buffer = -1;
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287 alGenBuffers(1, &al_buffer);
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288 if (CheckError())
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289 {
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290 alDeleteSources(1, &al_source);
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291 return nullptr;
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292 }
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293
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294 alBufferData(al_buffer, sound_format, samples, num_samples * bytes_per_sample, sample_rate);
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295 if (CheckError())
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296 {
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297 alDeleteSources(1, &al_source);
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298 alDeleteBuffers(1, &al_buffer);
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299 return nullptr;
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300 }
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301
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302 alSourcei(al_source, AL_BUFFER, al_buffer);
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303 if (CheckError())
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304 {
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305 alDeleteSources(1, &al_source);
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306 alDeleteBuffers(1, &al_buffer);
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307 return nullptr;
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308 }
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309
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310 auto ret = new TrackBuffer;
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311 ret->source_id = al_source;
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312 ret->buffer_id = al_buffer;
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313 return ret;
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314 }
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315
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316
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317 void PlayTrack16(TrackBuffer *buffer, bool loop = false, bool wait = false)
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318 {
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319 volatile int status;
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320 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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321 if (status == AL_PLAYING)
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322 Error("Already playing");
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323 else
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324 {
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325 float listener_pos[] = {0.0f, 0.0f, 0.0f};
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326 float listener_vel[] = {0.0f, 0.0f, 0.0f};
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327 float listener_orientation[] = {0.0f, 0.0f, -1.0f, // direction
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328 0.0f, 1.0f, 0.0f}; // up vector
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329 alListenerfv(AL_POSITION, listener_pos);
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330 alListenerfv(AL_VELOCITY, listener_vel);
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331 alListenerfv(AL_ORIENTATION, listener_orientation);
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332
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333 alSourcei(buffer->source_id, AL_LOOPING, loop ? AL_TRUE : AL_FALSE);
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334 alSourcePlay(buffer->source_id);
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335 if (CheckError())
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336 __debugbreak();
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337
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338 if (wait && !loop)
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339 {
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340 float track_length = alBufferLength(buffer->buffer_id);
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341 do
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342 {
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343 float track_offset = 0;
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344 alGetSourcef(buffer->source_id, AL_SEC_OFFSET, &track_offset);
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345 log("playing: %.4f/%.4f\n", track_offset, track_length);
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346
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347 alGetSourcei(buffer->source_id, AL_SOURCE_STATE, (int *)&status);
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348 }
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349 while (status == AL_PLAYING);
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350 }
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351 }
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352 }
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353
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354
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355
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356 protected:
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357 ALCdevice *device;
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358 ALCcontext *context;
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359
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360
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361 bool CheckError()
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362 {
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363 ALenum code1 = alGetError();
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364 if (code1 != AL_NO_ERROR)
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365 {
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366 DWORD w;
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367 const char *message = alGetString(code1);
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368 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlenA(message), &w, nullptr);
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369 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), "\n", 1, &w, nullptr);
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370 return true;
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371 }
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372
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373 ALenum code2 = alcGetError(device);
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374 if (code2 != ALC_NO_ERROR)
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375 {
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376 DWORD w;
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377 const char *message = alcGetString(device, code2);
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378 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), message, lstrlenA(message), &w, nullptr);
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379 WriteConsoleA(GetStdHandle(STD_OUTPUT_HANDLE), "\n", 1, &w, nullptr);
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380 return true;
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381 }
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382 return false;
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383 }
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384 }; |
