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/*
* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/audio_processing/test/wav_based_simulator.h"
#include <stdio.h>
#include <iostream>
#include <memory>
#include <utility>
#include <vector>
#include "absl/base/nullability.h"
#include "absl/strings/string_view.h"
#include "api/audio/audio_processing.h"
#include "api/scoped_refptr.h"
#include "common_audio/wav_file.h"
#include "modules/audio_processing/test/audio_processing_simulator.h"
#include "modules/audio_processing/test/test_utils.h"
#include "rtc_base/checks.h"
#include "rtc_base/system/file_wrapper.h"
namespace webrtc {
namespace test {
std::vector<WavBasedSimulator::SimulationEventType>
WavBasedSimulator::GetCustomEventChain(absl::string_view filename) {
std::vector<WavBasedSimulator::SimulationEventType> call_chain;
FileWrapper file_wrapper = FileWrapper::OpenReadOnly(filename);
RTC_CHECK(file_wrapper.is_open())
<< "Could not open the custom call order file, reverting "
"to using the default call order";
char c;
size_t num_read = file_wrapper.Read(&c, sizeof(char));
while (num_read > 0) {
switch (c) {
case 'r':
call_chain.push_back(SimulationEventType::kProcessReverseStream);
break;
case 'c':
call_chain.push_back(SimulationEventType::kProcessStream);
break;
case '\n':
break;
default:
RTC_FATAL() << "Incorrect custom call order file";
}
num_read = file_wrapper.Read(&c, sizeof(char));
}
return call_chain;
}
WavBasedSimulator::WavBasedSimulator(
const SimulationSettings& settings,
absl_nonnull scoped_refptr<AudioProcessing> audio_processing)
: AudioProcessingSimulator(settings, std::move(audio_processing)) {
if (settings_.call_order_input_filename) {
call_chain_ = WavBasedSimulator::GetCustomEventChain(
*settings_.call_order_input_filename);
} else {
call_chain_ = WavBasedSimulator::GetDefaultEventChain();
}
}
WavBasedSimulator::~WavBasedSimulator() = default;
std::vector<WavBasedSimulator::SimulationEventType>
WavBasedSimulator::GetDefaultEventChain() {
std::vector<WavBasedSimulator::SimulationEventType> call_chain(2);
call_chain[0] = SimulationEventType::kProcessStream;
call_chain[1] = SimulationEventType::kProcessReverseStream;
return call_chain;
}
void WavBasedSimulator::PrepareProcessStreamCall() {
if (settings_.fixed_interface) {
fwd_frame_.CopyFrom(*in_buf_);
}
ap_->set_stream_key_pressed(settings_.override_key_pressed.value_or(false));
if (!settings_.use_stream_delay || *settings_.use_stream_delay) {
RTC_CHECK_EQ(AudioProcessing::kNoError,
ap_->set_stream_delay_ms(
settings_.stream_delay ? *settings_.stream_delay : 0));
}
}
void WavBasedSimulator::PrepareReverseProcessStreamCall() {
if (settings_.fixed_interface) {
rev_frame_.CopyFrom(*reverse_in_buf_);
}
}
void WavBasedSimulator::Process() {
ConfigureAudioProcessor();
Initialize();
bool samples_left_to_process = true;
int call_chain_index = 0;
int capture_frames_since_init = 0;
constexpr int kInitIndex = 1;
while (samples_left_to_process) {
switch (call_chain_[call_chain_index]) {
case SimulationEventType::kProcessStream:
SelectivelyToggleDataDumping(kInitIndex, capture_frames_since_init);
samples_left_to_process = HandleProcessStreamCall();
++capture_frames_since_init;
break;
case SimulationEventType::kProcessReverseStream:
if (settings_.reverse_input_filename) {
samples_left_to_process = HandleProcessReverseStreamCall();
}
break;
default:
RTC_CHECK_NOTREACHED();
}
call_chain_index = (call_chain_index + 1) % call_chain_.size();
}
DetachAecDump();
}
void WavBasedSimulator::Analyze() {
std::cout << "Inits:" << std::endl;
std::cout << "1: -->" << std::endl;
std::cout << " Time:" << std::endl;
std::cout << " Capture: 0 s (0 frames) " << std::endl;
std::cout << " Render: 0 s (0 frames)" << std::endl;
}
bool WavBasedSimulator::HandleProcessStreamCall() {
bool samples_left_to_process = buffer_reader_->Read(in_buf_.get());
if (samples_left_to_process) {
PrepareProcessStreamCall();
ProcessStream(settings_.fixed_interface);
}
return samples_left_to_process;
}
bool WavBasedSimulator::HandleProcessReverseStreamCall() {
bool samples_left_to_process =
reverse_buffer_reader_->Read(reverse_in_buf_.get());
if (samples_left_to_process) {
PrepareReverseProcessStreamCall();
ProcessReverseStream(settings_.fixed_interface);
}
return samples_left_to_process;
}
void WavBasedSimulator::Initialize() {
std::unique_ptr<WavReader> in_file(
new WavReader(settings_.input_filename->c_str()));
int input_sample_rate_hz = in_file->sample_rate();
int input_num_channels = in_file->num_channels();
buffer_reader_.reset(new ChannelBufferWavReader(std::move(in_file)));
int output_sample_rate_hz = settings_.output_sample_rate_hz
? *settings_.output_sample_rate_hz
: input_sample_rate_hz;
int output_num_channels = settings_.output_num_channels
? *settings_.output_num_channels
: input_num_channels;
int reverse_sample_rate_hz = 48000;
int reverse_num_channels = 1;
int reverse_output_sample_rate_hz = 48000;
int reverse_output_num_channels = 1;
if (settings_.reverse_input_filename) {
std::unique_ptr<WavReader> reverse_in_file(
new WavReader(settings_.reverse_input_filename->c_str()));
reverse_sample_rate_hz = reverse_in_file->sample_rate();
reverse_num_channels = reverse_in_file->num_channels();
reverse_buffer_reader_.reset(
new ChannelBufferWavReader(std::move(reverse_in_file)));
reverse_output_sample_rate_hz =
settings_.reverse_output_sample_rate_hz
? *settings_.reverse_output_sample_rate_hz
: reverse_sample_rate_hz;
reverse_output_num_channels = settings_.reverse_output_num_channels
? *settings_.reverse_output_num_channels
: reverse_num_channels;
}
SetupBuffersConfigsOutputs(
input_sample_rate_hz, output_sample_rate_hz, reverse_sample_rate_hz,
reverse_output_sample_rate_hz, input_num_channels, output_num_channels,
reverse_num_channels, reverse_output_num_channels);
}
} // namespace test
} // namespace webrtc
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