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/*
* Copyright 2019 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.
*/
#define LOG_TAG "BTAudioHw"
#include <android-base/logging.h>
#include <errno.h>
#include <hardware/hardware.h>
#include <log/log.h>
#include <malloc.h>
#include <string.h>
#include <system/audio.h>
#include "stream_apis.h"
#include "utils.h"
using ::android::bluetooth::audio::utils::GetAudioParamString;
using ::android::bluetooth::audio::utils::ParseAudioParams;
static int adev_set_parameters(struct audio_hw_device* dev,
const char* kvpairs) {
LOG(VERBOSE) << __func__ << ": kevpairs=[" << kvpairs << "]";
std::unordered_map<std::string, std::string> params =
ParseAudioParams(kvpairs);
if (params.empty()) return 0;
LOG(VERBOSE) << __func__ << ": ParamsMap=[" << GetAudioParamString(params)
<< "]";
if (params.find("A2dpSuspended") == params.end()) {
return -ENOSYS;
}
auto* bluetooth_device = reinterpret_cast<BluetoothAudioDevice*>(dev);
std::lock_guard<std::mutex> guard(bluetooth_device->mutex_);
for (auto sout : bluetooth_device->opened_stream_outs_) {
if (sout->stream_out_.common.set_parameters != nullptr) {
sout->stream_out_.common.set_parameters(&sout->stream_out_.common,
kvpairs);
}
}
return 0;
}
static char* adev_get_parameters(const struct audio_hw_device* dev,
const char* keys) {
LOG(VERBOSE) << __func__ << ": keys=[" << keys << "]";
return strdup("");
}
static int adev_init_check(const struct audio_hw_device* dev) { return 0; }
static int adev_set_voice_volume(struct audio_hw_device* dev, float volume) {
LOG(VERBOSE) << __func__ << ": volume=" << volume;
return -ENOSYS;
}
static int adev_set_master_volume(struct audio_hw_device* dev, float volume) {
LOG(VERBOSE) << __func__ << ": volume=" << volume;
return -ENOSYS;
}
static int adev_get_master_volume(struct audio_hw_device* dev, float* volume) {
return -ENOSYS;
}
static int adev_set_master_mute(struct audio_hw_device* dev, bool muted) {
LOG(VERBOSE) << __func__ << ": mute=" << muted;
return -ENOSYS;
}
static int adev_get_master_mute(struct audio_hw_device* dev, bool* muted) {
return -ENOSYS;
}
static int adev_set_mode(struct audio_hw_device* dev, audio_mode_t mode) {
LOG(VERBOSE) << __func__ << ": mode=" << mode;
return 0;
}
static int adev_set_mic_mute(struct audio_hw_device* dev, bool state) {
LOG(VERBOSE) << __func__ << ": state=" << state;
return -ENOSYS;
}
static int adev_get_mic_mute(const struct audio_hw_device* dev, bool* state) {
return -ENOSYS;
}
static int adev_dump(const audio_hw_device_t* device, int fd) { return 0; }
static int adev_close(hw_device_t* device) {
auto* bluetooth_device = reinterpret_cast<BluetoothAudioDevice*>(device);
delete bluetooth_device;
return 0;
}
static int adev_open(const hw_module_t* module, const char* name,
hw_device_t** device) {
LOG(VERBOSE) << __func__ << ": name=[" << name << "]";
if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0) return -EINVAL;
auto bluetooth_audio_device = new BluetoothAudioDevice{};
struct audio_hw_device* adev = &bluetooth_audio_device->audio_device_;
if (!adev) return -ENOMEM;
adev->common.tag = HARDWARE_DEVICE_TAG;
adev->common.version = AUDIO_DEVICE_API_VERSION_2_0;
adev->common.module = (struct hw_module_t*)module;
adev->common.close = adev_close;
adev->init_check = adev_init_check;
adev->set_voice_volume = adev_set_voice_volume;
adev->set_master_volume = adev_set_master_volume;
adev->get_master_volume = adev_get_master_volume;
adev->set_mode = adev_set_mode;
adev->set_mic_mute = adev_set_mic_mute;
adev->get_mic_mute = adev_get_mic_mute;
adev->set_parameters = adev_set_parameters;
adev->get_parameters = adev_get_parameters;
adev->get_input_buffer_size = adev_get_input_buffer_size;
adev->open_output_stream = adev_open_output_stream;
adev->close_output_stream = adev_close_output_stream;
adev->open_input_stream = adev_open_input_stream;
adev->close_input_stream = adev_close_input_stream;
adev->dump = adev_dump;
adev->set_master_mute = adev_set_master_mute;
adev->get_master_mute = adev_get_master_mute;
*device = &adev->common;
return 0;
}
static struct hw_module_methods_t hal_module_methods = {
.open = adev_open,
};
struct audio_module HAL_MODULE_INFO_SYM = {
.common =
{
.tag = HARDWARE_MODULE_TAG,
.module_api_version = AUDIO_MODULE_API_VERSION_0_1,
.hal_api_version = HARDWARE_HAL_API_VERSION,
.id = AUDIO_HARDWARE_MODULE_ID,
.name = "Bluetooth Audio HW HAL",
.author = "The Android Open Source Project",
.methods = &hal_module_methods,
},
};
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