1 /* 2 * Copyright (C) 2018 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 AUDIO_HW_H 18 #define AUDIO_HW_H 19 20 #include <pthread.h> 21 22 #include <cutils/hashmap.h> 23 #include <hardware/audio.h> 24 #include <tinyalsa/asoundlib.h> 25 26 #include "audio_vbuffer.h" 27 28 struct generic_audio_device { 29 struct audio_hw_device device; // Constant after init 30 pthread_mutex_t lock; 31 bool master_mute; // Proteced by this->lock 32 bool mic_mute; // Proteced by this->lock 33 struct mixer *mixer; // Proteced by this->lock 34 Hashmap *out_bus_stream_map; // Extended field. Constant after init 35 }; 36 37 struct generic_stream_out { 38 struct audio_stream_out stream; // Constant after init 39 pthread_mutex_t lock; 40 struct generic_audio_device *dev; // Constant after init 41 audio_devices_t device; // Protected by this->lock 42 struct audio_config req_config; // Constant after init 43 struct pcm_config pcm_config; // Constant after init 44 audio_vbuffer_t buffer; // Constant after init 45 const char *bus_address; // Extended field. Constant after init 46 struct audio_gain gain_stage; // Constant after init 47 float amplitude_ratio; // Protected by this->lock 48 49 // Time & Position Keeping 50 bool standby; // Protected by this->lock 51 uint64_t underrun_position; // Protected by this->lock 52 struct timespec underrun_time; // Protected by this->lock 53 uint64_t last_write_time_us; // Protected by this->lock 54 uint64_t frames_total_buffered; // Protected by this->lock 55 uint64_t frames_written; // Protected by this->lock 56 uint64_t frames_rendered; // Protected by this->lock 57 58 // Worker 59 pthread_t worker_thread; // Constant after init 60 pthread_cond_t worker_wake; // Protected by this->lock 61 bool worker_standby; // Protected by this->lock 62 bool worker_exit; // Protected by this->lock 63 }; 64 65 struct generic_stream_in { 66 struct audio_stream_in stream; // Constant after init 67 pthread_mutex_t lock; 68 struct generic_audio_device *dev; // Constant after init 69 audio_devices_t device; // Protected by this->lock 70 struct audio_config req_config; // Constant after init 71 struct pcm *pcm; // Protected by this->lock 72 struct pcm_config pcm_config; // Constant after init 73 int16_t *stereo_to_mono_buf; // Protected by this->lock 74 size_t stereo_to_mono_buf_size; // Protected by this->lock 75 audio_vbuffer_t buffer; // Protected by this->lock 76 const char *bus_address; // Extended field. Constant after init 77 78 // Time & Position Keeping 79 bool standby; // Protected by this->lock 80 int64_t standby_position; // Protected by this->lock 81 struct timespec standby_exit_time; // Protected by this->lock 82 int64_t standby_frames_read; // Protected by this->lock 83 84 // Worker 85 pthread_t worker_thread; // Constant after init 86 pthread_cond_t worker_wake; // Protected by this->lock 87 bool worker_standby; // Protected by this->lock 88 bool worker_exit; // Protected by this->lock 89 }; 90 91 #endif // AUDIO_HW_H 92
