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/**
* Copyright 2023 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 "bluetooth-a2dp"
#include "a2dp_ext.h"
#include <bluetooth/log.h>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <vector>
#include "a2dp_codec_api.h"
#include "a2dp_constants.h"
#include "audio_hal_interface/a2dp_encoding.h"
#include "hardware/bt_av.h"
using namespace bluetooth;
static a2dp::CodecId codec_id(btav_a2dp_codec_index_t codec_index) {
bluetooth::a2dp::CodecId id;
auto result = ::bluetooth::audio::a2dp::provider::codec_info(codec_index, &id, nullptr, nullptr);
log::assert_that(result, "provider::codec_info unexpectdly failed");
return id;
}
A2dpCodecConfigExt::A2dpCodecConfigExt(btav_a2dp_codec_index_t codec_index, bool is_source)
: A2dpCodecConfig(codec_index, codec_id(codec_index),
bluetooth::audio::a2dp::provider::codec_index_str(codec_index).value(),
BTAV_A2DP_CODEC_PRIORITY_DEFAULT),
is_source_(is_source) {
// Load the local capabilities from the provider info.
auto result = ::bluetooth::audio::a2dp::provider::codec_info(
codec_index, nullptr, ota_codec_config_, &codec_local_capability_);
log::assert_that(result, "provider::codec_info unexpectdly failed");
}
tA2DP_STATUS A2dpCodecConfigExt::setCodecConfig(const uint8_t* p_peer_codec_info,
bool /* is_capability */,
uint8_t* p_result_codec_config) {
if (p_peer_codec_info == nullptr || p_result_codec_config == nullptr) {
return A2DP_FAIL;
}
// Call get_a2dp_config to recompute best capabilities.
// This method need to update codec_config_, and ota_codec_config_
// using the local codec_user_config_, and input peer_codec_info.
using namespace bluetooth::audio::a2dp;
provider::a2dp_remote_capabilities capabilities = {
.seid = 0, // the SEID does not matter here.
.capabilities = p_peer_codec_info,
};
auto result = provider::get_a2dp_configuration(
RawAddress::kEmpty, std::vector<provider::a2dp_remote_capabilities>{capabilities},
codec_user_config_);
if (!result.has_value()) {
log::error("Failed to set a configuration for {}", name_);
return AVDTP_UNSUPPORTED_CONFIGURATION;
}
// Use the local capabilities for the selectable capabilities:
// the provider AIDL HAL does not provide an interface to parse the
// peer capabilities and the selectable capabilities cannot be
// computed.
codec_selectable_capability_ = codec_local_capability_;
codec_config_ = result->codec_parameters;
vendor_specific_parameters_ = result->vendor_specific_parameters;
memcpy(ota_codec_config_, result->codec_config, sizeof(ota_codec_config_));
memcpy(p_result_codec_config, result->codec_config, sizeof(ota_codec_config_));
return A2DP_SUCCESS;
}
bool A2dpCodecConfigExt::setPeerCodecCapabilities(const uint8_t* p_peer_codec_capabilities) {
// Use the local capabilities for the selectable capabilities:
// the provider AIDL HAL does not provide an interface to parse the
// peer capabilities and the selectable capabilities cannot be
// computed.
codec_selectable_capability_ = codec_local_capability_;
memcpy(ota_codec_peer_capability_, p_peer_codec_capabilities, sizeof(ota_codec_peer_capability_));
return true;
}
void A2dpCodecConfigExt::setCodecConfig(btav_a2dp_codec_config_t codec_parameters,
uint8_t const codec_config[AVDT_CODEC_SIZE],
std::vector<uint8_t> const& vendor_specific_parameters) {
// Use the local capabilities for the selectable capabilities:
// the provider AIDL HAL does not provide an interface to parse the
// peer capabilities and the selectable capabilities cannot be
// computed.
codec_selectable_capability_ = codec_local_capability_;
codec_config_ = codec_parameters;
memcpy(ota_codec_config_, codec_config, sizeof(ota_codec_config_));
vendor_specific_parameters_ = vendor_specific_parameters;
}
tA2DP_ENCODER_INTERFACE const a2dp_encoder_interface_ext = {
.encoder_init = [](const tA2DP_ENCODER_INIT_PEER_PARAMS*, A2dpCodecConfig*,
a2dp_source_read_callback_t, a2dp_source_enqueue_callback_t) {},
.encoder_cleanup = []() {},
.feeding_reset = []() {},
.feeding_flush = []() {},
.get_encoder_interval_ms = []() { return (uint64_t)20; },
.get_effective_frame_size = []() { return 0; },
.send_frames = [](uint64_t) {},
.set_transmit_queue_length = [](size_t) {},
};
const tA2DP_ENCODER_INTERFACE* A2DP_GetEncoderInterfaceExt(const uint8_t*) {
return &a2dp_encoder_interface_ext;
}
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