mirror of https://github.com/axmolengine/axmol.git
283 lines
9.8 KiB
C++
283 lines
9.8 KiB
C++
/****************************************************************************
|
|
Copyright (c) 2010-2012 cocos2d-x.org
|
|
Copyright (c) 2013-2016 Chukong Technologies Inc.
|
|
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
|
|
Copyright (c) 2020 c4games.com
|
|
Copyright (c) 2021 Bytedance Inc.
|
|
|
|
http://www.cocos2d-x.org
|
|
|
|
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.
|
|
****************************************************************************/
|
|
|
|
#ifndef __CC_IMAGE_H__
|
|
#define __CC_IMAGE_H__
|
|
|
|
#include "base/CCRef.h"
|
|
#include "renderer/CCTexture2D.h"
|
|
#include "base/CCData.h"
|
|
|
|
// premultiply alpha, or the effect will be wrong when using other pixel formats in Texture2D,
|
|
// such as RGB888, RGB5A1
|
|
#define CC_RGB_PREMULTIPLY_ALPHA(vr, vg, vb, va) \
|
|
(unsigned)(((unsigned)((uint8_t)(vr) * ((uint8_t)(va) + 1)) >> 8) | \
|
|
((unsigned)((uint8_t)(vg) * ((uint8_t)(va) + 1) >> 8) << 8) | \
|
|
((unsigned)((uint8_t)(vb) * ((uint8_t)(va) + 1) >> 8) << 16) | ((unsigned)(uint8_t)(va) << 24))
|
|
|
|
NS_CC_BEGIN
|
|
|
|
/**
|
|
* @addtogroup platform
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
@brief Structure which can tell where mipmap begins and how long is it
|
|
*/
|
|
typedef struct _MipmapInfo
|
|
{
|
|
uint8_t* address;
|
|
int len;
|
|
_MipmapInfo() : address(NULL), len(0) {}
|
|
} MipmapInfo;
|
|
|
|
/** The Image class for loading all images supported by adxe . */
|
|
class CC_DLL Image : public Ref
|
|
{
|
|
public:
|
|
friend class TextureCache;
|
|
/**
|
|
* @js ctor
|
|
*/
|
|
Image();
|
|
/**
|
|
* @js NA
|
|
* @lua NA
|
|
*/
|
|
virtual ~Image();
|
|
|
|
/** Supported formats for Image */
|
|
enum class Format
|
|
{
|
|
//! JPEG
|
|
JPG,
|
|
//! PNG
|
|
PNG,
|
|
//! BMP,
|
|
BMP,
|
|
//! WebP
|
|
WEBP,
|
|
//! PVR
|
|
PVR,
|
|
//! ETC1
|
|
ETC1,
|
|
//! ETC2
|
|
ETC2,
|
|
//! S3TC
|
|
S3TC,
|
|
//! ATITC
|
|
ATITC,
|
|
//! TGA
|
|
TGA,
|
|
//! ASTC
|
|
ASTC,
|
|
//! Raw Data
|
|
RAW_DATA,
|
|
//! Unknown format
|
|
UNKNOWN
|
|
};
|
|
|
|
struct CompressedImagePMAFlag
|
|
{
|
|
enum : uint32_t
|
|
{
|
|
ASTC = 1,
|
|
DUAL_SAMPLER = 1 << 1, // for dual sampler, such as ETC1_RGB + ETC1_Alpha
|
|
ETC2 = 1 << 2,
|
|
PVR = 1 << 3,
|
|
ALL = 0xffff,
|
|
};
|
|
};
|
|
|
|
/**
|
|
* Enables or disables premultiplied alpha for PNG files.
|
|
*
|
|
* @param enabled (default: true)
|
|
*/
|
|
static void setPNGPremultipliedAlphaEnabled(bool enabled) { PNG_PREMULTIPLIED_ALPHA_ENABLED = enabled; }
|
|
|
|
/** treats (or not) PVR files as if they have alpha premultiplied.
|
|
Since it is impossible to know at runtime if the PVR images have the alpha channel premultiplied, it is
|
|
possible load them as if they have (or not) the alpha channel premultiplied.
|
|
|
|
By default it is disabled.
|
|
!!!DEPRECATED, use setCompressedImagesHavePMA(CompressedImagePMAFlag::PVR, true) instead
|
|
*/
|
|
CC_DEPRECATED_ATTRIBUTE static void setPVRImagesHavePremultipliedAlpha(bool haveAlphaPremultiplied);
|
|
|
|
/** The new APIs to treats (or not) compressed image files as if they have alpha premultiplied.
|
|
*
|
|
* By default, ETC1 + ETC1_ALPHA is enabled, because we do PMA at shader etc1.frag
|
|
* !!!IMPORTANT:
|
|
* The spine-runtimes official always regard texture has PMA, so you needs
|
|
* do compressed images PMA at texture convert tools or GPU fragment shader, such as
|
|
* positionTexture.frag, positionTextureColor.frag and others which have texture sampler,
|
|
* otherwise, the spine animations can't be render properly
|
|
*/
|
|
static void setCompressedImagesHavePMA(uint32_t targets, bool havePMA);
|
|
static bool isCompressedImageHavePMA(uint32_t target);
|
|
|
|
/**
|
|
@brief Load the image from the specified path.
|
|
@param path the absolute file path.
|
|
@return true if loaded correctly.
|
|
*/
|
|
bool initWithImageFile(const std::string& path);
|
|
|
|
/**
|
|
@brief Load image from stream buffer.
|
|
@param data stream buffer which holds the image data.
|
|
@param dataLen data length expressed in (number of) bytes.
|
|
@param ownData whether take the data memory management.
|
|
@return true if loaded correctly.
|
|
* @js NA
|
|
* @lua NA
|
|
*/
|
|
bool initWithImageData(const uint8_t* data, ssize_t dataLen);
|
|
bool initWithImageData(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
|
|
// @warning kFmtRawData only support RGBA8888
|
|
bool initWithRawData(const uint8_t* data,
|
|
ssize_t dataLen,
|
|
int width,
|
|
int height,
|
|
int bitsPerComponent,
|
|
bool preMulti = false);
|
|
|
|
// Getters
|
|
uint8_t* getData() { return _data + _offset; }
|
|
ssize_t getDataLen() { return _dataLen - _offset; }
|
|
Format getFileType() { return _fileType; }
|
|
backend::PixelFormat getPixelFormat() { return _pixelFormat; }
|
|
int getWidth() { return _width; }
|
|
int getHeight() { return _height; }
|
|
int getNumberOfMipmaps() { return _numberOfMipmaps; }
|
|
MipmapInfo* getMipmaps() { return _mipmaps; }
|
|
bool hasPremultipliedAlpha() { return _hasPremultipliedAlpha; }
|
|
std::string getFilePath() const { return _filePath; }
|
|
|
|
int getBitPerPixel();
|
|
bool hasAlpha();
|
|
bool isCompressed();
|
|
|
|
/**
|
|
@brief Save Image data to the specified file, with specified format.
|
|
@param filePath the file's absolute path, including file suffix.
|
|
@param isToRGB whether the image is saved as RGB format.
|
|
*/
|
|
bool saveToFile(const std::string& filename, bool isToRGB = true);
|
|
void premultiplyAlpha();
|
|
void reversePremultipliedAlpha();
|
|
|
|
protected:
|
|
typedef struct sImageTGA tImageTGA;
|
|
|
|
bool initWithJpgData(uint8_t* data, ssize_t dataLen);
|
|
bool initWithPngData(uint8_t* data, ssize_t dataLen);
|
|
bool initWithBmpData(uint8_t* data, ssize_t dataLen);
|
|
bool initWithWebpData(uint8_t* data, ssize_t dataLen);
|
|
bool initWithTGAData(tImageTGA* tgaData);
|
|
|
|
// All internal init function have chance to own the data for fast forward data to hardware decoder
|
|
// see: initWithImageData
|
|
bool initWithPVRData(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
bool initWithPVRv2Data(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
bool initWithPVRv3Data(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
bool initWithETCData(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
bool initWithETC2Data(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
bool initWithASTCData(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
bool initWithS3TCData(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
bool initWithATITCData(uint8_t* data, ssize_t dataLen, bool ownData);
|
|
|
|
// fast forward pixels to GPU if ownData
|
|
void forwardPixels(uint8_t* data, ssize_t dataLen, int offset, bool ownData);
|
|
|
|
bool saveImageToPNG(const std::string& filePath, bool isToRGB = true);
|
|
bool saveImageToJPG(const std::string& filePath);
|
|
|
|
protected:
|
|
/**
|
|
@brief Determine how many mipmaps can we have.
|
|
It's same as define but it respects namespaces
|
|
*/
|
|
static const int MIPMAP_MAX = 16;
|
|
/**
|
|
@brief Determine whether we premultiply alpha for png files.
|
|
*/
|
|
static bool PNG_PREMULTIPLIED_ALPHA_ENABLED;
|
|
static uint32_t COMPRESSED_IMAGE_PMA_FLAGS;
|
|
|
|
uint8_t* _data;
|
|
ssize_t _dataLen;
|
|
ssize_t _offset; // useful for hardware decoder present to hold data without copy
|
|
int _width;
|
|
int _height;
|
|
bool _unpack;
|
|
Format _fileType;
|
|
backend::PixelFormat _pixelFormat;
|
|
MipmapInfo _mipmaps[MIPMAP_MAX]; // pointer to mipmap images
|
|
int _numberOfMipmaps;
|
|
// false if we can't auto detect the image is premultiplied or not.
|
|
bool _hasPremultipliedAlpha;
|
|
std::string _filePath;
|
|
|
|
protected:
|
|
// noncopyable
|
|
Image(const Image& rImg);
|
|
Image& operator=(const Image&);
|
|
|
|
/*
|
|
@brief The same result as with initWithImageFile, but thread safe. It is caused by
|
|
loadImage() in TextureCache.cpp.
|
|
@param fullpath full path of the file.
|
|
@param imageType the type of image, currently only supporting two types.
|
|
@return true if loaded correctly.
|
|
*/
|
|
bool initWithImageFileThreadSafe(const std::string& fullpath);
|
|
|
|
Format detectFormat(const uint8_t* data, ssize_t dataLen);
|
|
bool isPng(const uint8_t* data, ssize_t dataLen);
|
|
bool isJpg(const uint8_t* data, ssize_t dataLen);
|
|
bool isBmp(const uint8_t* data, ssize_t dataLen);
|
|
bool isWebp(const uint8_t* data, ssize_t dataLen);
|
|
bool isPvr(const uint8_t* data, ssize_t dataLen);
|
|
bool isEtc1(const uint8_t* data, ssize_t dataLen);
|
|
bool isEtc2(const uint8_t* data, ssize_t dataLen);
|
|
bool isS3TC(const uint8_t* data, ssize_t dataLen);
|
|
bool isATITC(const uint8_t* data, ssize_t dataLen);
|
|
bool isASTC(const uint8_t* data, ssize_t dataLen);
|
|
};
|
|
|
|
// end of platform group
|
|
/// @}
|
|
|
|
NS_CC_END
|
|
|
|
#endif // __CC_IMAGE_H__
|