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113 lines
4.3 KiB
113 lines
4.3 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef AUDIO_HW_H
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#define AUDIO_HW_H
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#include <pthread.h>
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#include <cutils/hashmap.h>
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#include <hardware/audio.h>
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#include <tinyalsa/asoundlib.h>
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#include "audio_vbuffer.h"
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struct generic_audio_device {
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struct audio_hw_device device; // Constant after init
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pthread_mutex_t lock;
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unsigned int last_patch_id; // Protected by this->lock
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bool main_mute; // Protected by this->lock
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bool mic_mute; // Protected by this->lock
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struct mixer *mixer; // Protected by this->lock
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Hashmap *out_bus_stream_map; // Extended field. Constant after init
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Hashmap *in_bus_tone_frequency_map; // Extended field. Constant after init
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int next_tone_frequency_to_assign; // Protected by this->lock
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// Play on Speaker zone selection
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int last_zone_selected_to_play; // Protected by this->lock
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};
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enum output_channel_enable {
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LEFT_CHANNEL = 1,
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RIGHT_CHANNEL = 1 << 1,
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BOTH_CHANNELS = LEFT_CHANNEL | RIGHT_CHANNEL
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};
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struct generic_stream_out {
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struct audio_stream_out stream; // Constant after init
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pthread_mutex_t lock;
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struct generic_audio_device *dev; // Constant after init
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audio_devices_t device; // Protected by this->lock
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struct audio_config req_config; // Constant after init
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struct pcm_config pcm_config; // Constant after init
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audio_vbuffer_t buffer; // Constant after init
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const char *bus_address; // Extended field. Constant after init
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struct audio_gain gain_stage; // Constant after init
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float amplitude_ratio; // Protected by this->lock
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enum output_channel_enable enabled_channels; // Constant after init
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// Time & Position Keeping
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bool standby; // Protected by this->lock
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uint64_t underrun_position; // Protected by this->lock
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struct timespec underrun_time; // Protected by this->lock
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uint64_t last_write_time_us; // Protected by this->lock
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uint64_t frames_total_buffered; // Protected by this->lock
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uint64_t frames_written; // Protected by this->lock
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uint64_t frames_rendered; // Protected by this->lock
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// Worker
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pthread_t worker_thread; // Constant after init
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pthread_cond_t worker_wake; // Protected by this->lock
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pthread_cond_t write_wake; // Protected by this->lock
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bool worker_standby; // Protected by this->lock
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bool worker_exit; // Protected by this->lock
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};
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struct oscillator {
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float phase;
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float phase_increment;
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};
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struct generic_stream_in {
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struct audio_stream_in stream; // Constant after init
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pthread_mutex_t lock;
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struct generic_audio_device *dev; // Constant after init
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audio_devices_t device; // Protected by this->lock
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struct audio_config req_config; // Constant after init
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struct pcm *pcm; // Protected by this->lock
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struct pcm_config pcm_config; // Constant after init
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int16_t *stereo_to_mono_buf; // Protected by this->lock
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size_t stereo_to_mono_buf_size; // Protected by this->lock
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audio_vbuffer_t buffer; // Protected by this->lock
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const char *bus_address; // Extended field. Constant after init
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// Time & Position Keeping
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bool standby; // Protected by this->lock
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int64_t standby_position; // Protected by this->lock
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struct timespec standby_exit_time; // Protected by this->lock
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int64_t standby_frames_read; // Protected by this->lock
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// Worker
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pthread_t worker_thread; // Constant after init
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pthread_cond_t worker_wake; // Protected by this->lock
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bool worker_standby; // Protected by this->lock
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bool worker_exit; // Protected by this->lock
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// Tone Oscillator
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struct oscillator oscillator; // Protected by this->lock
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};
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#endif // AUDIO_HW_H
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