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/* Copyright 2019 Diligent Graphics LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 OF ANY PROPRIETARY RIGHTS.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#pragma once
#include <vector>
#include "../../../DiligentCore/Graphics/GraphicsEngine/interface/GraphicsTypes.h"
#include "../../../DiligentCore/Primitives/interface/FileStream.h"
#include "../../../DiligentCore/Primitives/interface/DataBlob.h"
#include "../../../DiligentCore/Common/interface/RefCntAutoPtr.h"
#include "../../../DiligentCore/Common/interface/ObjectBase.h"
namespace Diligent
{
/// Image file format
enum class EImageFileFormat
{
/// Unknown format
unknown = 0,
/// The image is encoded in JPEG format
jpeg,
/// The image is encoded in PNG format
png,
/// The image is encoded in TIFF format
tiff,
/// DDS file
dds,
/// KTX file
ktx
};
/// Image loading information
struct ImageLoadInfo
{
/// Image file format
EImageFileFormat Format = EImageFileFormat::unknown;
};
/// Image description
struct ImageDesc
{
/// Image width in pixels
Uint32 Width = 0;
/// Image height in pixels
Uint32 Height = 0;
/// Component type
VALUE_TYPE ComponentType = VT_UNDEFINED;
/// Number of color components
Uint32 NumComponents = 0;
/// Image row stride in bytes
Uint32 RowStride = 0;
};
/// Implementation of a 2D image
class Image : public ObjectBase<IObject>
{
public:
typedef ObjectBase<IObject> TBase;
/// Creates a new image from the data blob
/// \param [in] pFileData - Pointer to the data blob containing image data
/// \param [in] LoadInfo - Image loading information
/// \param [out] ppImage - Memory location where pointer to the created image is written.
/// The image should be released via Release().
static void CreateFromDataBlob(IDataBlob* pFileData,
const ImageLoadInfo& LoadInfo,
Image** ppImage);
struct EncodeInfo
{
Uint32 Width = 0;
Uint32 Height = 0;
TEXTURE_FORMAT TexFormat = TEX_FORMAT_UNKNOWN;
bool KeepAlpha = false;
const void* pData = nullptr;
Uint32 Stride = 0;
EImageFileFormat FileFormat = EImageFileFormat::jpeg;
int JpegQuality = 95;
};
static void Encode(const EncodeInfo& Info, IDataBlob** ppEncodedData);
/// Returns image description
const ImageDesc& GetDesc(){ return m_Desc; }
/// Returns a pointer to the image data
IDataBlob* GetData(){ return m_pData; }
static std::vector<Uint8> ConvertImageData(Uint32 Width,
Uint32 Height,
const Uint8* pData,
Uint32 Stride,
TEXTURE_FORMAT SrcFormat,
TEXTURE_FORMAT DstFormat,
bool KeepAlpha);
static EImageFileFormat GetFileFormat(const Uint8* pData, size_t Size);
private:
template<typename AllocatorType, typename ObjectType>
friend class MakeNewRCObj;
Image(IReferenceCounters* pRefCounters,
IDataBlob* pFileData,
const ImageLoadInfo& LoadInfo);
void LoadPngFile( IDataBlob* pFileData, const ImageLoadInfo& LoadInfo );
void LoadTiffFile( IDataBlob* pFileData, const ImageLoadInfo& LoadInfo );
void LoadJpegFile( IDataBlob* pFileData, const ImageLoadInfo& LoadInfo );
ImageDesc m_Desc;
RefCntAutoPtr<IDataBlob> m_pData;
};
/// Creates an image from file
/// \param [in] FilePath - Source file path
/// \param [out] ppImage - Memory location where pointer to the created image will be stored
/// \param [out] ppRawData - If the file format is not recognized by the function, it will load raw bytes
/// and return them in the data blob. This parameter can be null.
/// \return Image file format.
EImageFileFormat CreateImageFromFile(const Char* FilePath,
Image** ppImage,
IDataBlob** ppRawData = nullptr);
}
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