//
// 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 "AudioOutput.h"
#include "../tools/logging.h"
#include <stdlib.h>

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#if defined(TGVOIP_USE_CALLBACK_AUDIO_IO)
// nothing
#elif defined(__ANDROID__)
#include "../os/android/AudioOutputOpenSLES.h"
#include "../os/android/AudioOutputAndroid.h"
#include <sys/system_properties.h>
#elif defined(__APPLE__)
#include <TargetConditionals.h>
#include "../os/darwin/AudioOutputAudioUnit.h"
#if TARGET_OS_OSX
#include "../os/darwin/AudioOutputAudioUnitOSX.h"
#endif
#elif defined(_WIN32)
#ifdef TGVOIP_WINXP_COMPAT
#include "../os/windows/AudioOutputWave.h"
#endif
#include "../os/windows/AudioOutputWASAPI.h"
#elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__gnu_hurd__)
#ifndef WITHOUT_ALSA
#include "../os/linux/AudioOutputALSA.h"
#endif
#ifndef WITHOUT_PULSE
#include "../os/linux/AudioOutputPulse.h"
#include "../os/linux/AudioPulse.h"
#endif
#else
#error "Unsupported operating system"
#endif

using namespace tgvoip;
using namespace tgvoip::audio;

int32_t AudioOutput::estimatedDelay = 60;

AudioOutput::AudioOutput() : currentDevice("default")
{
	failed = false;
}

AudioOutput::AudioOutput(std::string deviceID) : currentDevice(deviceID)
{
	failed = false;
}

AudioOutput::~AudioOutput()
{
}

int32_t AudioOutput::GetEstimatedDelay()
{
#if defined(__ANDROID__)
	char sdkNum[PROP_VALUE_MAX];
	__system_property_get("ro.build.version.sdk", sdkNum);
	int systemVersion = atoi(sdkNum);
	return systemVersion < 21 ? 150 : 50;
#endif
	return estimatedDelay;
}

void AudioOutput::EnumerateDevices(std::vector<AudioOutputDevice> &devs)
{
#if defined(TGVOIP_USE_CALLBACK_AUDIO_IO)
	// not supported
#elif defined(__APPLE__) && TARGET_OS_OSX
	AudioOutputAudioUnitLegacy::EnumerateDevices(devs);
#elif defined(_WIN32)
#ifdef TGVOIP_WINXP_COMPAT
	if (LOBYTE(LOWORD(GetVersion())) < 6)
	{
		AudioOutputWave::EnumerateDevices(devs);
		return;
	}
#endif
	AudioOutputWASAPI::EnumerateDevices(devs);
#elif defined(__linux__) && !defined(__ANDROID__)
#if !defined(WITHOUT_PULSE) && !defined(WITHOUT_ALSA)
	if (!AudioOutputPulse::EnumerateDevices(devs))
		AudioOutputALSA::EnumerateDevices(devs);
#elif defined(WITHOUT_PULSE)
	AudioOutputALSA::EnumerateDevices(devs);
#else
	AudioOutputPulse::EnumerateDevices(devs);
#endif
#endif
}

std::string AudioOutput::GetCurrentDevice()
{
	return currentDevice;
}

void AudioOutput::SetCurrentDevice(std::string deviceID)
{
}

bool AudioOutput::IsInitialized()
{
	return !failed;
}