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audio_processing_module.cpp
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131 lines (103 loc) · 4.46 KB
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/*
* Copyright 2025 LiveKit
*
* 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.
*/
#include "livekit/audio_processing_module.h"
#include <stdexcept>
#include "audio_frame.pb.h"
#include "ffi.pb.h"
#include "ffi_client.h"
namespace livekit {
AudioProcessingModule::AudioProcessingModule() : AudioProcessingModule(Options{}) {}
AudioProcessingModule::AudioProcessingModule(const Options& options) {
proto::FfiRequest req;
auto* msg = req.mutable_new_apm();
msg->set_echo_canceller_enabled(options.echo_cancellation);
msg->set_noise_suppression_enabled(options.noise_suppression);
msg->set_high_pass_filter_enabled(options.high_pass_filter);
msg->set_gain_controller_enabled(options.auto_gain_control);
const proto::FfiResponse resp = FfiClient::instance().sendRequest(req);
if (!resp.has_new_apm()) {
throw std::runtime_error("AudioProcessingModule: failed to create APM - no response");
}
const auto& apm_info = resp.new_apm().apm();
handle_ = FfiHandle(static_cast<uintptr_t>(apm_info.handle().id()));
if (!handle_.valid()) {
throw std::runtime_error("AudioProcessingModule: failed to create APM - invalid handle");
}
}
void AudioProcessingModule::processStream(AudioFrame& frame) {
if (!handle_.valid()) {
throw std::runtime_error("AudioProcessingModule: invalid handle");
}
if (frame.data().empty()) {
return;
}
proto::FfiRequest req;
auto* msg = req.mutable_apm_process_stream();
msg->set_apm_handle(static_cast<std::uint64_t>(handle_.get()));
msg->set_data_ptr(reinterpret_cast<std::uint64_t>(frame.data().data()));
msg->set_size(static_cast<std::uint32_t>(frame.data().size() * sizeof(std::int16_t)));
msg->set_sample_rate(static_cast<std::uint32_t>(frame.sample_rate()));
msg->set_num_channels(static_cast<std::uint32_t>(frame.num_channels()));
const proto::FfiResponse resp = FfiClient::instance().sendRequest(req);
if (!resp.has_apm_process_stream()) {
throw std::runtime_error("AudioProcessingModule::processStream: unexpected response");
}
const auto& result = resp.apm_process_stream();
if (result.has_error()) {
throw std::runtime_error("AudioProcessingModule::processStream: " + result.error());
}
}
void AudioProcessingModule::processReverseStream(AudioFrame& frame) {
if (!handle_.valid()) {
throw std::runtime_error("AudioProcessingModule: invalid handle");
}
if (frame.data().empty()) {
return;
}
proto::FfiRequest req;
auto* msg = req.mutable_apm_process_reverse_stream();
msg->set_apm_handle(static_cast<std::uint64_t>(handle_.get()));
msg->set_data_ptr(reinterpret_cast<std::uint64_t>(frame.data().data()));
msg->set_size(static_cast<std::uint32_t>(frame.data().size() * sizeof(std::int16_t)));
msg->set_sample_rate(static_cast<std::uint32_t>(frame.sample_rate()));
msg->set_num_channels(static_cast<std::uint32_t>(frame.num_channels()));
const proto::FfiResponse resp = FfiClient::instance().sendRequest(req);
if (!resp.has_apm_process_reverse_stream()) {
throw std::runtime_error("AudioProcessingModule::processReverseStream: unexpected response");
}
const auto& result = resp.apm_process_reverse_stream();
if (result.has_error()) {
throw std::runtime_error("AudioProcessingModule::processReverseStream: " + result.error());
}
}
void AudioProcessingModule::setStreamDelayMs(int delay_ms) {
if (!handle_.valid()) {
throw std::runtime_error("AudioProcessingModule: invalid handle");
}
proto::FfiRequest req;
auto* msg = req.mutable_apm_set_stream_delay();
msg->set_apm_handle(static_cast<std::uint64_t>(handle_.get()));
msg->set_delay_ms(delay_ms);
const proto::FfiResponse resp = FfiClient::instance().sendRequest(req);
if (!resp.has_apm_set_stream_delay()) {
throw std::runtime_error("AudioProcessingModule::setStreamDelayMs: unexpected response");
}
const auto& result = resp.apm_set_stream_delay();
if (result.has_error()) {
throw std::runtime_error("AudioProcessingModule::setStreamDelayMs: " + result.error());
}
}
} // namespace livekit