libtgvoip/audio/AudioIOCallback.cpp

//
// libtgvoip is free and unencumbered public domain software.
// For more information, see http://unlicense.org or the UNLICENSE file
// you should have received with this source code distribution.
//

#include "AudioIOCallback.h"
#include "../VoIPController.h"
#include "../tools/logging.h"

using namespace tgvoip;
using namespace tgvoip::audio;

#pragma mark - IO

AudioIOCallback::AudioIOCallback()
{
	input = std::make_shared<AudioInputCallback>();
	output = std::make_shared<AudioOutputCallback>();
}

AudioIOCallback::~AudioIOCallback()
{
}

std::shared_ptr<AudioInput> AudioIOCallback::GetInput()
{
	return input;
}

std::shared_ptr<AudioOutput> AudioIOCallback::GetOutput()
{
	return output;
}

#pragma mark - Input

AudioInputCallback::AudioInputCallback()
{
	thread = new Thread(std::bind(&AudioInputCallback::RunThread, this));
	thread->SetName("AudioInputCallback");
}

AudioInputCallback::~AudioInputCallback()
{
	running = false;
	thread->Join();
	delete thread;
}

void AudioInputCallback::Start()
{
	if (!running)
	{
		running = true;
		thread->Start();
	}
	recording = true;
}

void AudioInputCallback::Stop()
{
	recording = false;
}

void AudioInputCallback::SetDataCallback(std::function<void(int16_t *, size_t)> c)
{
	dataCallback = c;
}

void AudioInputCallback::RunThread()
{
	int16_t buf[960];
	while (running)
	{
		double t = VoIPController::GetCurrentTime();
		memset(buf, 0, sizeof(buf));
		dataCallback(buf, 960);
		InvokeCallback(reinterpret_cast<unsigned char *>(buf), 960 * 2);
		double sl = 0.02 - (VoIPController::GetCurrentTime() - t);
		if (sl > 0)
			Thread::Sleep(sl);
	}
}

#pragma mark - Output

AudioOutputCallback::AudioOutputCallback()
{
	thread = new Thread(std::bind(&AudioOutputCallback::RunThread, this));
	thread->SetName("AudioOutputCallback");
}

AudioOutputCallback::~AudioOutputCallback()
{
	running = false;
	thread->Join();
	delete thread;
}

void AudioOutputCallback::Start()
{
	if (!running)
	{
		running = true;
		thread->Start();
	}
	playing = true;
}

void AudioOutputCallback::Stop()
{
	playing = false;
}

bool AudioOutputCallback::IsPlaying()
{
	return playing;
}

void AudioOutputCallback::SetDataCallback(std::function<void(int16_t *, size_t)> c)
{
	dataCallback = c;
}

void AudioOutputCallback::RunThread()
{
	int16_t buf[960];
	while (running)
	{
		double t = VoIPController::GetCurrentTime();
		InvokeCallback(reinterpret_cast<unsigned char *>(buf), 960 * 2);
		dataCallback(buf, 960);
		double sl = 0.02 - (VoIPController::GetCurrentTime() - t);
		if (sl > 0)
			Thread::Sleep(sl);
	}
}