1 /* 2 * Copyright 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef OBOE_AAUDIO_LOADER_H_ 18 #define OBOE_AAUDIO_LOADER_H_ 19 20 #include <unistd.h> 21 #include "oboe/Definitions.h" 22 23 // If the NDK is before O then define this in your build 24 // so that AAudio.h will not be included. 25 #ifdef OBOE_NO_INCLUDE_AAUDIO 26 27 // Define missing types from AAudio.h 28 typedef int32_t aaudio_stream_state_t; 29 typedef int32_t aaudio_direction_t; 30 typedef int32_t aaudio_format_t; 31 typedef int32_t aaudio_data_callback_result_t; 32 typedef int32_t aaudio_result_t; 33 typedef int32_t aaudio_sharing_mode_t; 34 typedef int32_t aaudio_performance_mode_t; 35 36 typedef struct AAudioStreamStruct AAudioStream; 37 typedef struct AAudioStreamBuilderStruct AAudioStreamBuilder; 38 39 typedef aaudio_data_callback_result_t (*AAudioStream_dataCallback)( 40 AAudioStream *stream, 41 void *userData, 42 void *audioData, 43 int32_t numFrames); 44 45 typedef void (*AAudioStream_errorCallback)( 46 AAudioStream *stream, 47 void *userData, 48 aaudio_result_t error); 49 50 // These were defined in P 51 typedef int32_t aaudio_usage_t; 52 typedef int32_t aaudio_content_type_t; 53 typedef int32_t aaudio_input_preset_t; 54 typedef int32_t aaudio_session_id_t; 55 56 // There are a few definitions used by Oboe. 57 #define AAUDIO_OK static_cast<aaudio_result_t>(Result::OK) 58 #define AAUDIO_ERROR_TIMEOUT static_cast<aaudio_result_t>(Result::ErrorTimeout) 59 #define AAUDIO_STREAM_STATE_STARTING static_cast<aaudio_stream_state_t>(StreamState::Starting) 60 #define AAUDIO_STREAM_STATE_STARTED static_cast<aaudio_stream_state_t>(StreamState::Started) 61 #else 62 #include <aaudio/AAudio.h> 63 #endif 64 65 #ifndef __NDK_MAJOR__ 66 #define __NDK_MAJOR__ 0 67 #endif 68 69 #if __NDK_MAJOR__ < 24 70 // Defined in SC_V2 71 typedef uint32_t aaudio_channel_mask_t; 72 typedef int32_t aaudio_spatialization_behavior_t; 73 #endif 74 75 #ifndef __ANDROID_API_Q__ 76 #define __ANDROID_API_Q__ 29 77 #endif 78 79 #ifndef __ANDROID_API_R__ 80 #define __ANDROID_API_R__ 30 81 #endif 82 83 #ifndef __ANDROID_API_S__ 84 #define __ANDROID_API_S__ 31 85 #endif 86 87 #ifndef __ANDROID_API_S_V2__ 88 #define __ANDROID_API_S_V2__ 32 89 #endif 90 91 #ifndef __ANDROID_API_U__ 92 #define __ANDROID_API_U__ 34 93 #endif 94 95 namespace oboe { 96 97 /** 98 * The AAudio API was not available in early versions of Android. 99 * To avoid linker errors, we dynamically link with the functions by name using dlsym(). 100 * On older versions this linkage will safely fail. 101 */ 102 class AAudioLoader { 103 public: 104 // Use signatures for common functions. 105 // Key to letter abbreviations. 106 // S = Stream 107 // B = Builder 108 // I = int32_t 109 // L = int64_t 110 // T = sTate 111 // K = clocKid_t 112 // P = Pointer to following data type 113 // C = Const prefix 114 // H = cHar 115 // U = uint32_t 116 // O = bOol 117 118 typedef int32_t (*signature_I_PPB)(AAudioStreamBuilder **builder); 119 120 typedef const char * (*signature_CPH_I)(int32_t); 121 122 typedef int32_t (*signature_I_PBPPS)(AAudioStreamBuilder *, 123 AAudioStream **stream); // AAudioStreamBuilder_open() 124 125 typedef int32_t (*signature_I_PB)(AAudioStreamBuilder *); // AAudioStreamBuilder_delete() 126 // AAudioStreamBuilder_setSampleRate() 127 typedef void (*signature_V_PBI)(AAudioStreamBuilder *, int32_t); 128 129 // AAudioStreamBuilder_setChannelMask() 130 typedef void (*signature_V_PBU)(AAudioStreamBuilder *, uint32_t); 131 132 typedef void (*signature_V_PBCPH)(AAudioStreamBuilder *, const char *); 133 134 // AAudioStreamBuilder_setPrivacySensitive 135 typedef void (*signature_V_PBO)(AAudioStreamBuilder *, bool); 136 137 typedef int32_t (*signature_I_PS)(AAudioStream *); // AAudioStream_getSampleRate() 138 typedef int64_t (*signature_L_PS)(AAudioStream *); // AAudioStream_getFramesRead() 139 // AAudioStream_setBufferSizeInFrames() 140 typedef int32_t (*signature_I_PSI)(AAudioStream *, int32_t); 141 142 typedef void (*signature_V_PBPDPV)(AAudioStreamBuilder *, 143 AAudioStream_dataCallback, 144 void *); 145 146 typedef void (*signature_V_PBPEPV)(AAudioStreamBuilder *, 147 AAudioStream_errorCallback, 148 void *); 149 150 typedef aaudio_format_t (*signature_F_PS)(AAudioStream *stream); 151 152 typedef int32_t (*signature_I_PSPVIL)(AAudioStream *, void *, int32_t, int64_t); 153 typedef int32_t (*signature_I_PSCPVIL)(AAudioStream *, const void *, int32_t, int64_t); 154 155 typedef int32_t (*signature_I_PSTPTL)(AAudioStream *, 156 aaudio_stream_state_t, 157 aaudio_stream_state_t *, 158 int64_t); 159 160 typedef int32_t (*signature_I_PSKPLPL)(AAudioStream *, clockid_t, int64_t *, int64_t *); 161 162 typedef bool (*signature_O_PS)(AAudioStream *); 163 164 typedef uint32_t (*signature_U_PS)(AAudioStream *); 165 166 static AAudioLoader* getInstance(); // singleton 167 168 /** 169 * Open the AAudio shared library and load the function pointers. 170 * This can be called multiple times. 171 * It should only be called from one thread. 172 * 173 * The destructor will clean up after the open. 174 * 175 * @return 0 if successful or negative error. 176 */ 177 int open(); 178 getLibHandle()179 void *getLibHandle() const { return mLibHandle; } 180 181 // Function pointers into the AAudio shared library. 182 signature_I_PPB createStreamBuilder = nullptr; 183 184 signature_I_PBPPS builder_openStream = nullptr; 185 186 signature_V_PBI builder_setBufferCapacityInFrames = nullptr; 187 signature_V_PBI builder_setChannelCount = nullptr; 188 signature_V_PBI builder_setDeviceId = nullptr; 189 signature_V_PBI builder_setDirection = nullptr; 190 signature_V_PBI builder_setFormat = nullptr; 191 signature_V_PBI builder_setFramesPerDataCallback = nullptr; 192 signature_V_PBI builder_setPerformanceMode = nullptr; 193 signature_V_PBI builder_setSampleRate = nullptr; 194 signature_V_PBI builder_setSharingMode = nullptr; 195 signature_V_PBU builder_setChannelMask = nullptr; 196 197 signature_V_PBI builder_setUsage = nullptr; 198 signature_V_PBI builder_setContentType = nullptr; 199 signature_V_PBI builder_setInputPreset = nullptr; 200 signature_V_PBI builder_setSessionId = nullptr; 201 202 signature_V_PBO builder_setPrivacySensitive = nullptr; 203 signature_V_PBI builder_setAllowedCapturePolicy = nullptr; 204 205 signature_V_PBCPH builder_setPackageName = nullptr; 206 signature_V_PBCPH builder_setAttributionTag = nullptr; 207 208 signature_V_PBO builder_setIsContentSpatialized = nullptr; 209 signature_V_PBI builder_setSpatializationBehavior = nullptr; 210 211 signature_V_PBPDPV builder_setDataCallback = nullptr; 212 signature_V_PBPEPV builder_setErrorCallback = nullptr; 213 214 signature_I_PB builder_delete = nullptr; 215 216 signature_F_PS stream_getFormat = nullptr; 217 218 signature_I_PSPVIL stream_read = nullptr; 219 signature_I_PSCPVIL stream_write = nullptr; 220 221 signature_I_PSTPTL stream_waitForStateChange = nullptr; 222 223 signature_I_PSKPLPL stream_getTimestamp = nullptr; 224 225 signature_I_PS stream_release = nullptr; 226 signature_I_PS stream_close = nullptr; 227 228 signature_I_PS stream_getChannelCount = nullptr; 229 signature_I_PS stream_getDeviceId = nullptr; 230 231 signature_I_PS stream_getBufferSize = nullptr; 232 signature_I_PS stream_getBufferCapacity = nullptr; 233 signature_I_PS stream_getFramesPerBurst = nullptr; 234 signature_I_PS stream_getState = nullptr; 235 signature_I_PS stream_getPerformanceMode = nullptr; 236 signature_I_PS stream_getSampleRate = nullptr; 237 signature_I_PS stream_getSharingMode = nullptr; 238 signature_I_PS stream_getXRunCount = nullptr; 239 240 signature_I_PSI stream_setBufferSize = nullptr; 241 signature_I_PS stream_requestStart = nullptr; 242 signature_I_PS stream_requestPause = nullptr; 243 signature_I_PS stream_requestFlush = nullptr; 244 signature_I_PS stream_requestStop = nullptr; 245 246 signature_L_PS stream_getFramesRead = nullptr; 247 signature_L_PS stream_getFramesWritten = nullptr; 248 249 signature_CPH_I convertResultToText = nullptr; 250 251 signature_I_PS stream_getUsage = nullptr; 252 signature_I_PS stream_getContentType = nullptr; 253 signature_I_PS stream_getInputPreset = nullptr; 254 signature_I_PS stream_getSessionId = nullptr; 255 256 signature_O_PS stream_isPrivacySensitive = nullptr; 257 signature_I_PS stream_getAllowedCapturePolicy = nullptr; 258 259 signature_U_PS stream_getChannelMask = nullptr; 260 261 signature_O_PS stream_isContentSpatialized = nullptr; 262 signature_I_PS stream_getSpatializationBehavior = nullptr; 263 264 signature_I_PS stream_getHardwareChannelCount = nullptr; 265 signature_I_PS stream_getHardwareSampleRate = nullptr; 266 signature_F_PS stream_getHardwareFormat = nullptr; 267 268 private: AAudioLoader()269 AAudioLoader() {} 270 ~AAudioLoader(); 271 272 // Load function pointers for specific signatures. 273 signature_I_PPB load_I_PPB(const char *name); 274 signature_CPH_I load_CPH_I(const char *name); 275 signature_V_PBI load_V_PBI(const char *name); 276 signature_V_PBCPH load_V_PBCPH(const char *name); 277 signature_V_PBPDPV load_V_PBPDPV(const char *name); 278 signature_V_PBPEPV load_V_PBPEPV(const char *name); 279 signature_I_PB load_I_PB(const char *name); 280 signature_I_PBPPS load_I_PBPPS(const char *name); 281 signature_I_PS load_I_PS(const char *name); 282 signature_L_PS load_L_PS(const char *name); 283 signature_F_PS load_F_PS(const char *name); 284 signature_O_PS load_O_PS(const char *name); 285 signature_I_PSI load_I_PSI(const char *name); 286 signature_I_PSPVIL load_I_PSPVIL(const char *name); 287 signature_I_PSCPVIL load_I_PSCPVIL(const char *name); 288 signature_I_PSTPTL load_I_PSTPTL(const char *name); 289 signature_I_PSKPLPL load_I_PSKPLPL(const char *name); 290 signature_V_PBU load_V_PBU(const char *name); 291 signature_U_PS load_U_PS(const char *name); 292 signature_V_PBO load_V_PBO(const char *name); 293 294 void *mLibHandle = nullptr; 295 }; 296 297 } // namespace oboe 298 299 #endif //OBOE_AAUDIO_LOADER_H_ 300