Audio: Rewrite audio module

src/Nazara/Audio/OpenALBuffer.cpp

@@ -0,0 +1,92 @@
+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Audio module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Audio/OpenALBuffer.hpp>
+#include <Nazara/Audio/OpenALDevice.hpp>
+#include <Nazara/Audio/OpenALLibrary.hpp>
+#include <Nazara/Core/Algorithm.hpp>
+#include <Nazara/Audio/Debug.hpp>
+
+namespace Nz
+{
+	OpenALBuffer::~OpenALBuffer()
+	{
+		GetDevice().MakeContextCurrent();
+
+		m_library.alDeleteBuffers(1, &m_bufferId);
+	}
+
+	UInt32 OpenALBuffer::GetSampleCount() const
+	{
+		GetDevice().MakeContextCurrent();
+
+		ALint bits, size;
+		m_library.alGetBufferi(m_bufferId, AL_BITS, &bits);
+		m_library.alGetBufferi(m_bufferId, AL_SIZE, &size);
+
+		UInt32 sampleCount = 0;
+		if (bits != 0)
+			sampleCount += (8 * SafeCast<UInt32>(size)) / SafeCast<UInt32>(bits);
+
+		return sampleCount;
+	}
+
+	UInt32 OpenALBuffer::GetSize() const
+	{
+		GetDevice().MakeContextCurrent();
+
+		ALint size;
+		m_library.alGetBufferi(m_bufferId, AL_SIZE, &size);
+
+		return SafeCast<UInt32>(size);
+	}
+
+	UInt32 OpenALBuffer::GetSampleRate() const
+	{
+		GetDevice().MakeContextCurrent();
+
+		ALint sampleRate;
+		m_library.alGetBufferi(m_bufferId, AL_FREQUENCY, &sampleRate);
+
+		return SafeCast<UInt32>(sampleRate);
+	}
+
+	bool OpenALBuffer::Reset(AudioFormat format, UInt64 sampleCount, UInt32 sampleRate, const void* samples)
+	{
+		OpenALDevice& device = GetDevice();
+
+		ALenum alFormat = device.TranslateAudioFormat(format);
+		if (!alFormat)
+		{
+			NazaraError("unsupported format");
+			return false;
+		}
+
+		device.MakeContextCurrent();
+
+		// We empty the error stack
+		while (m_library.alGetError() != AL_NO_ERROR);
+
+		// TODO: Use SafeCast
+		m_library.alBufferData(m_bufferId, alFormat, samples, static_cast<ALsizei>(sampleCount * sizeof(Int16)), static_cast<ALsizei>(sampleRate));
+
+		if (ALenum lastError = m_library.alGetError(); lastError != AL_NO_ERROR)
+		{
+			NazaraError("failed to reset OpenAL buffer: " + std::to_string(lastError));
+			return false;
+		}
+
+		return true;
+	}
+
+	OpenALDevice& OpenALBuffer::GetDevice()
+	{
+		return SafeCast<OpenALDevice&>(*GetAudioDevice());
+	}
+
+	const OpenALDevice& OpenALBuffer::GetDevice() const
+	{
+		return SafeCast<OpenALDevice&>(*GetAudioDevice());
+	}
+}