Magic_Game/src/kiwano-audio/AudioEngine.cpp

// 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/platform/win32/helper.h>  // win32::ThrowIfFailed
#include <kiwano/core/Logger.h>
#include <kiwano-audio/libraries.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 = dlls::MediaFoundation::Get().MFStartup(MF_VERSION, MFSTARTUP_FULL);

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

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

			win32::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;
			}

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

		bool AudioEngine::CreateSound(Sound& sound, const Transcoder::Buffer& buffer)
		{
			KGE_ASSERT(x_audio2_ && "AudioEngine hasn't been initialized!");

			HRESULT hr = S_OK;

			if (buffer.format == nullptr)
				hr = E_INVALIDARG;

			if (SUCCEEDED(hr))
			{
				IXAudio2SourceVoice* voice = nullptr;
				hr = x_audio2_->CreateSourceVoice(&voice, buffer.format, 0, XAUDIO2_DEFAULT_FREQ_RATIO);

				if (SUCCEEDED(hr))
				{
					IXAudio2SourceVoice* old = sound.GetXAudio2Voice();
					if (old)
					{
						old->DestroyVoice();
						old = nullptr;
					}

					sound.SetXAudio2Voice(voice);
				}
			}

			win32::WarnIfFailed(hr);
			return SUCCEEDED(hr);
		}

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

			if (x_audio2_)
				x_audio2_->StartEngine();
		}

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

			if (x_audio2_)
				x_audio2_->StopEngine();
		}
	}
}