// Copyright (c) 2016-2018 Kiwano - Nomango
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include <kiwano/renderer/win32/helper.h>  // DX::ThrowIfFailed
#include <kiwano-audio/audio-modules.h>
#include <kiwano-audio/AudioEngine.h>

namespace kiwano
{
	namespace audio
	{
		AudioEngine::AudioEngine()
			: x_audio2_(nullptr)
			, mastering_voice_(nullptr)
		{
		}

		AudioEngine::~AudioEngine()
		{
		}

		void AudioEngine::SetupComponent()
		{
			// KGE_SYS_LOG(L"Creating audio resources");

			HRESULT hr = modules::MediaFoundation::Get().MFStartup(MF_VERSION, MFSTARTUP_FULL);

			if (SUCCEEDED(hr))
			{
				hr = modules::XAudio2::Get().XAudio2Create(&x_audio2_, 0, XAUDIO2_DEFAULT_PROCESSOR);
			}

			if (SUCCEEDED(hr))
			{
				hr = x_audio2_->CreateMasteringVoice(&mastering_voice_);
			}

			DX::ThrowIfFailed(hr);
		}

		void AudioEngine::DestroyComponent()
		{
			// KGE_SYS_LOG(L"Destroying audio resources");

			if (mastering_voice_)
			{
				mastering_voice_->DestroyVoice();
				mastering_voice_ = nullptr;
			}

			if (x_audio2_)
			{
				x_audio2_->Release();
				x_audio2_ = nullptr;
			}

			modules::MediaFoundation::Get().MFShutdown();
		}

		HRESULT AudioEngine::CreateVoice(IXAudio2SourceVoice** voice, const Transcoder::Buffer& buffer)
		{
			KGE_ASSERT(x_audio2_ && "AudioEngine hasn't been initialized!");

			if (voice == nullptr)
			{
				return E_INVALIDARG;
			}

			if (*voice)
			{
				(*voice)->DestroyVoice();
				(*voice) = nullptr;
			}

			return x_audio2_->CreateSourceVoice(voice, buffer.format, 0, XAUDIO2_DEFAULT_FREQ_RATIO);
		}

		void AudioEngine::Open()
		{
			KGE_ASSERT(x_audio2_ && "AudioEngine hasn't been initialized!");

			x_audio2_->StartEngine();
		}

		void AudioEngine::Close()
		{
			KGE_ASSERT(x_audio2_ && "AudioEngine hasn't been initialized!");

			x_audio2_->StopEngine();
		}
	}
}