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/*
* Copyright (c) 2012 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 <stdio.h>
#include <string.h>
#include <math.h>
#include "webrtc/common_types.h"
#include "webrtc/modules/audio_coding/test/SpatialAudio.h"
#include "webrtc/system_wrappers/include/trace.h"
#include "webrtc/system_wrappers/include/trace.h"
#include "webrtc/test/testsupport/fileutils.h"
namespace webrtc {
#define NUM_PANN_COEFFS 10
SpatialAudio::SpatialAudio(int testMode)
: _acmLeft(AudioCodingModule::Create(1)),
_acmRight(AudioCodingModule::Create(2)),
_acmReceiver(AudioCodingModule::Create(3)),
_testMode(testMode) {
}
SpatialAudio::~SpatialAudio() {
delete _channel;
_inFile.Close();
_outFile.Close();
}
int16_t SpatialAudio::Setup() {
_channel = new Channel;
// Register callback for the sender side.
CHECK_ERROR(_acmLeft->RegisterTransportCallback(_channel));
CHECK_ERROR(_acmRight->RegisterTransportCallback(_channel));
// Register the receiver ACM in channel
_channel->RegisterReceiverACM(_acmReceiver.get());
uint16_t sampFreqHz = 32000;
const std::string file_name = webrtc::test::ResourcePath(
"audio_coding/testfile32kHz", "pcm");
_inFile.Open(file_name, sampFreqHz, "rb", false);
std::string output_file = webrtc::test::OutputPath()
+ "out_spatial_autotest.pcm";
if (_testMode == 1) {
output_file = webrtc::test::OutputPath() + "testspatial_out.pcm";
printf("\n");
printf("Enter the output file [%s]: ", output_file.c_str());
PCMFile::ChooseFile(&output_file, MAX_FILE_NAME_LENGTH_BYTE, &sampFreqHz);
} else {
output_file = webrtc::test::OutputPath() + "testspatial_out.pcm";
}
_outFile.Open(output_file, sampFreqHz, "wb", false);
_outFile.SaveStereo(true);
// Register all available codes as receiving codecs.
CodecInst codecInst;
int status;
uint8_t num_encoders = _acmReceiver->NumberOfCodecs();
// Register all available codes as receiving codecs once more.
for (uint8_t n = 0; n < num_encoders; n++) {
status = _acmReceiver->Codec(n, &codecInst);
if (status < 0) {
printf("Error in Codec(), no matching codec found");
}
status = _acmReceiver->RegisterReceiveCodec(codecInst);
if (status < 0) {
printf("Error in RegisterReceiveCodec() for payload type %d",
codecInst.pltype);
}
}
return 0;
}
void SpatialAudio::Perform() {
if (_testMode == 0) {
printf("Running SpatialAudio Test");
WEBRTC_TRACE(webrtc::kTraceStateInfo, webrtc::kTraceAudioCoding, -1,
"---------- SpatialAudio ----------");
}
Setup();
CodecInst codecInst;
_acmLeft->Codec((uint8_t) 1, &codecInst);
CHECK_ERROR(_acmLeft->RegisterSendCodec(codecInst));
EncodeDecode();
int16_t pannCntr = 0;
double leftPanning[NUM_PANN_COEFFS] = { 1.00, 0.95, 0.90, 0.85, 0.80, 0.75,
0.70, 0.60, 0.55, 0.50 };
double rightPanning[NUM_PANN_COEFFS] = { 0.50, 0.55, 0.60, 0.70, 0.75, 0.80,
0.85, 0.90, 0.95, 1.00 };
while ((pannCntr + 1) < NUM_PANN_COEFFS) {
_acmLeft->Codec((uint8_t) 0, &codecInst);
codecInst.pacsize = 480;
CHECK_ERROR(_acmLeft->RegisterSendCodec(codecInst));
CHECK_ERROR(_acmRight->RegisterSendCodec(codecInst));
EncodeDecode(leftPanning[pannCntr], rightPanning[pannCntr]);
pannCntr++;
// Change codec
_acmLeft->Codec((uint8_t) 3, &codecInst);
codecInst.pacsize = 320;
CHECK_ERROR(_acmLeft->RegisterSendCodec(codecInst));
CHECK_ERROR(_acmRight->RegisterSendCodec(codecInst));
EncodeDecode(leftPanning[pannCntr], rightPanning[pannCntr]);
pannCntr++;
if (_testMode == 0) {
printf(".");
}
}
_acmLeft->Codec((uint8_t) 4, &codecInst);
CHECK_ERROR(_acmLeft->RegisterSendCodec(codecInst));
EncodeDecode();
_acmLeft->Codec((uint8_t) 0, &codecInst);
codecInst.pacsize = 480;
CHECK_ERROR(_acmLeft->RegisterSendCodec(codecInst));
CHECK_ERROR(_acmRight->RegisterSendCodec(codecInst));
pannCntr = NUM_PANN_COEFFS - 1;
while (pannCntr >= 0) {
EncodeDecode(leftPanning[pannCntr], rightPanning[pannCntr]);
pannCntr--;
if (_testMode == 0) {
printf(".");
}
}
if (_testMode == 0) {
printf("Done!\n");
}
}
void SpatialAudio::EncodeDecode(const double leftPanning,
const double rightPanning) {
AudioFrame audioFrame;
int32_t outFileSampFreq = _outFile.SamplingFrequency();
const double rightToLeftRatio = rightPanning / leftPanning;
_channel->SetIsStereo(true);
while (!_inFile.EndOfFile()) {
_inFile.Read10MsData(audioFrame);
for (size_t n = 0; n < audioFrame.samples_per_channel_; n++) {
audioFrame.data_[n] = (int16_t) floor(
audioFrame.data_[n] * leftPanning + 0.5);
}
CHECK_ERROR(_acmLeft->Add10MsData(audioFrame));
for (size_t n = 0; n < audioFrame.samples_per_channel_; n++) {
audioFrame.data_[n] = (int16_t) floor(
audioFrame.data_[n] * rightToLeftRatio + 0.5);
}
CHECK_ERROR(_acmRight->Add10MsData(audioFrame));
CHECK_ERROR(_acmReceiver->PlayoutData10Ms(outFileSampFreq, &audioFrame));
_outFile.Write10MsData(audioFrame);
}
_inFile.Rewind();
}
void SpatialAudio::EncodeDecode() {
AudioFrame audioFrame;
int32_t outFileSampFreq = _outFile.SamplingFrequency();
_channel->SetIsStereo(false);
while (!_inFile.EndOfFile()) {
_inFile.Read10MsData(audioFrame);
CHECK_ERROR(_acmLeft->Add10MsData(audioFrame));
CHECK_ERROR(_acmReceiver->PlayoutData10Ms(outFileSampFreq, &audioFrame));
_outFile.Write10MsData(audioFrame);
}
_inFile.Rewind();
}
} // namespace webrtc
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