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