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axmol/cocos/platform/CCImage.cpp

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/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies 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.
****************************************************************************/
#include "platform/CCImage.h"
#include <string>
#include <ctype.h>
#include "base/CCData.h"
extern "C"
{
// To resolve link error when building 32bits with Xcode 6.
// More information please refer to the discussion in https://github.com/cocos2d/cocos2d-x/pull/6986
#if defined (__unix) || (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
#ifndef __ENABLE_COMPATIBILITY_WITH_UNIX_2003__
#define __ENABLE_COMPATIBILITY_WITH_UNIX_2003__
#include <stdio.h>
FILE *fopen$UNIX2003( const char *filename, const char *mode )
{
return fopen(filename, mode);
}
size_t fwrite$UNIX2003( const void *a, size_t b, size_t c, FILE *d )
{
return fwrite(a, b, c, d);
}
char *strerror$UNIX2003( int errnum )
{
return strerror(errnum);
}
// int fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
int fputs$UNIX2003(const char *str, FILE *stream)
{
return fputs(str, stream);
}
#endif
#endif
#include "png.h"
#include "base/etc1.h"
}
#include "base/s3tc.h"
#include "base/atitc.h"
#include "base/pvr.h"
#include "base/TGAlib.h"
#include "base/ccMacros.h"
#include "CCCommon.h"
#include "CCStdC.h"
#include "CCFileUtils.h"
#include "base/CCConfiguration.h"
#include "base/ccUtils.h"
#include "base/ZipUtils.h"
#include "base/CCModuleManager.h"
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
#include "android/CCFileUtilsAndroid.h"
#endif
#define CC_GL_ATC_RGB_AMD 0x8C92
#define CC_GL_ATC_RGBA_EXPLICIT_ALPHA_AMD 0x8C93
#define CC_GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD 0x87EE
NS_CC_BEGIN
//////////////////////////////////////////////////////////////////////////
//struct and data for pvr structure
namespace
{
static const int PVR_TEXTURE_FLAG_TYPE_MASK = 0xff;
static bool _PVRHaveAlphaPremultiplied = false;
// Values taken from PVRTexture.h from http://www.imgtec.com
enum class PVR2TextureFlag
{
Mipmap = (1<<8), // has mip map levels
Twiddle = (1<<9), // is twiddled
Bumpmap = (1<<10), // has normals encoded for a bump map
Tiling = (1<<11), // is bordered for tiled pvr
Cubemap = (1<<12), // is a cubemap/skybox
FalseMipCol = (1<<13), // are there false colored MIP levels
Volume = (1<<14), // is this a volume texture
Alpha = (1<<15), // v2.1 is there transparency info in the texture
VerticalFlip = (1<<16), // v2.1 is the texture vertically flipped
};
enum class PVR3TextureFlag
{
PremultipliedAlpha = (1<<1) // has premultiplied alpha
};
static const char gPVRTexIdentifier[5] = "PVR!";
// v2
enum class PVR2TexturePixelFormat : unsigned char
{
RGBA4444 = 0x10,
RGBA5551,
RGBA8888,
RGB565,
RGB555, // unsupported
RGB888,
I8,
AI88,
PVRTC2BPP_RGBA,
PVRTC4BPP_RGBA,
BGRA8888,
A8,
};
// v3
enum class PVR3TexturePixelFormat : uint64_t
{
PVRTC2BPP_RGB = 0ULL,
PVRTC2BPP_RGBA = 1ULL,
PVRTC4BPP_RGB = 2ULL,
PVRTC4BPP_RGBA = 3ULL,
PVRTC2_2BPP_RGBA = 4ULL,
PVRTC2_4BPP_RGBA = 5ULL,
ETC1 = 6ULL,
DXT1 = 7ULL,
DXT2 = 8ULL,
DXT3 = 9ULL,
DXT4 = 10ULL,
DXT5 = 11ULL,
BC1 = 7ULL,
BC2 = 9ULL,
BC3 = 11ULL,
BC4 = 12ULL,
BC5 = 13ULL,
BC6 = 14ULL,
BC7 = 15ULL,
UYVY = 16ULL,
YUY2 = 17ULL,
BW1bpp = 18ULL,
R9G9B9E5 = 19ULL,
RGBG8888 = 20ULL,
GRGB8888 = 21ULL,
ETC2_RGB = 22ULL,
ETC2_RGBA = 23ULL,
ETC2_RGBA1 = 24ULL,
EAC_R11_Unsigned = 25ULL,
EAC_R11_Signed = 26ULL,
EAC_RG11_Unsigned = 27ULL,
EAC_RG11_Signed = 28ULL,
BGRA8888 = 0x0808080861726762ULL,
RGBA8888 = 0x0808080861626772ULL,
RGBA4444 = 0x0404040461626772ULL,
RGBA5551 = 0x0105050561626772ULL,
RGB565 = 0x0005060500626772ULL,
RGB888 = 0x0008080800626772ULL,
A8 = 0x0000000800000061ULL,
L8 = 0x000000080000006cULL,
LA88 = 0x000008080000616cULL,
};
// v2
typedef const std::map<PVR2TexturePixelFormat, Texture2D::PixelFormat> _pixel2_formathash;
static const _pixel2_formathash::value_type v2_pixel_formathash_value[] =
{
_pixel2_formathash::value_type(PVR2TexturePixelFormat::BGRA8888, Texture2D::PixelFormat::BGRA8888),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::RGBA8888, Texture2D::PixelFormat::RGBA8888),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::RGBA4444, Texture2D::PixelFormat::RGBA4444),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::RGBA5551, Texture2D::PixelFormat::RGB5A1),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::RGB565, Texture2D::PixelFormat::RGB565),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::RGB888, Texture2D::PixelFormat::RGB888),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::A8, Texture2D::PixelFormat::A8),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::I8, Texture2D::PixelFormat::I8),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::AI88, Texture2D::PixelFormat::AI88),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::PVRTC2BPP_RGBA, Texture2D::PixelFormat::PVRTC2A),
_pixel2_formathash::value_type(PVR2TexturePixelFormat::PVRTC4BPP_RGBA, Texture2D::PixelFormat::PVRTC4A),
};
static const int PVR2_MAX_TABLE_ELEMENTS = sizeof(v2_pixel_formathash_value) / sizeof(v2_pixel_formathash_value[0]);
static const _pixel2_formathash v2_pixel_formathash(v2_pixel_formathash_value, v2_pixel_formathash_value + PVR2_MAX_TABLE_ELEMENTS);
// v3
typedef const std::map<PVR3TexturePixelFormat, Texture2D::PixelFormat> _pixel3_formathash;
static _pixel3_formathash::value_type v3_pixel_formathash_value[] =
{
_pixel3_formathash::value_type(PVR3TexturePixelFormat::BGRA8888, Texture2D::PixelFormat::BGRA8888),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::RGBA8888, Texture2D::PixelFormat::RGBA8888),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::RGBA4444, Texture2D::PixelFormat::RGBA4444),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::RGBA5551, Texture2D::PixelFormat::RGB5A1),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::RGB565, Texture2D::PixelFormat::RGB565),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::RGB888, Texture2D::PixelFormat::RGB888),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::A8, Texture2D::PixelFormat::A8),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::L8, Texture2D::PixelFormat::I8),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::LA88, Texture2D::PixelFormat::AI88),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::PVRTC2BPP_RGB, Texture2D::PixelFormat::PVRTC2),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::PVRTC2BPP_RGBA, Texture2D::PixelFormat::PVRTC2A),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::PVRTC4BPP_RGB, Texture2D::PixelFormat::PVRTC4),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::PVRTC4BPP_RGBA, Texture2D::PixelFormat::PVRTC4A),
_pixel3_formathash::value_type(PVR3TexturePixelFormat::ETC1, Texture2D::PixelFormat::ETC),
};
static const int PVR3_MAX_TABLE_ELEMENTS = sizeof(v3_pixel_formathash_value) / sizeof(v3_pixel_formathash_value[0]);
static const _pixel3_formathash v3_pixel_formathash(v3_pixel_formathash_value, v3_pixel_formathash_value + PVR3_MAX_TABLE_ELEMENTS);
typedef struct _PVRTexHeader
{
unsigned int headerLength;
unsigned int height;
unsigned int width;
unsigned int numMipmaps;
unsigned int flags;
unsigned int dataLength;
unsigned int bpp;
unsigned int bitmaskRed;
unsigned int bitmaskGreen;
unsigned int bitmaskBlue;
unsigned int bitmaskAlpha;
unsigned int pvrTag;
unsigned int numSurfs;
} PVRv2TexHeader;
#ifdef _MSC_VER
#pragma pack(push,1)
#endif
typedef struct
{
uint32_t version;
uint32_t flags;
uint64_t pixelFormat;
uint32_t colorSpace;
uint32_t channelType;
uint32_t height;
uint32_t width;
uint32_t depth;
uint32_t numberOfSurfaces;
uint32_t numberOfFaces;
uint32_t numberOfMipmaps;
uint32_t metadataLength;
#ifdef _MSC_VER
} PVRv3TexHeader;
#pragma pack(pop)
#else
} __attribute__((packed)) PVRv3TexHeader;
#endif
}
//pvr structure end
//////////////////////////////////////////////////////////////////////////
//struct and data for s3tc(dds) struct
namespace
{
struct DDColorKey
{
uint32_t colorSpaceLowValue;
uint32_t colorSpaceHighValue;
};
struct DDSCaps
{
uint32_t caps;
uint32_t caps2;
uint32_t caps3;
uint32_t caps4;
};
struct DDPixelFormat
{
uint32_t size;
uint32_t flags;
uint32_t fourCC;
uint32_t RGBBitCount;
uint32_t RBitMask;
uint32_t GBitMask;
uint32_t BBitMask;
uint32_t ABitMask;
};
struct DDSURFACEDESC2
{
uint32_t size;
uint32_t flags;
uint32_t height;
uint32_t width;
union
{
uint32_t pitch;
uint32_t linearSize;
} DUMMYUNIONNAMEN1;
union
{
uint32_t backBufferCount;
uint32_t depth;
} DUMMYUNIONNAMEN5;
union
{
uint32_t mipMapCount;
uint32_t refreshRate;
uint32_t srcVBHandle;
} DUMMYUNIONNAMEN2;
uint32_t alphaBitDepth;
uint32_t reserved;
uint32_t surface;
union
{
DDColorKey ddckCKDestOverlay;
uint32_t emptyFaceColor;
} DUMMYUNIONNAMEN3;
DDColorKey ddckCKDestBlt;
DDColorKey ddckCKSrcOverlay;
DDColorKey ddckCKSrcBlt;
union
{
DDPixelFormat ddpfPixelFormat;
uint32_t FVF;
} DUMMYUNIONNAMEN4;
DDSCaps ddsCaps;
uint32_t textureStage;
} ;
#pragma pack(push,1)
struct S3TCTexHeader
{
char fileCode[4];
DDSURFACEDESC2 ddsd;
};
#pragma pack(pop)
}
//s3tc struct end
//////////////////////////////////////////////////////////////////////////
//struct and data for atitc(ktx) struct
namespace
{
struct ATITCTexHeader
{
//HEADER
char identifier[12];
uint32_t endianness;
uint32_t glType;
uint32_t glTypeSize;
uint32_t glFormat;
uint32_t glInternalFormat;
uint32_t glBaseInternalFormat;
uint32_t pixelWidth;
uint32_t pixelHeight;
uint32_t pixelDepth;
uint32_t numberOfArrayElements;
uint32_t numberOfFaces;
uint32_t numberOfMipmapLevels;
uint32_t bytesOfKeyValueData;
};
}
//atittc struct end
//////////////////////////////////////////////////////////////////////////
namespace
{
typedef struct
{
const unsigned char * data;
ssize_t size;
int offset;
}tImageSource;
static void pngReadCallback(png_structp png_ptr, png_bytep data, png_size_t length)
{
tImageSource* isource = (tImageSource*)png_get_io_ptr(png_ptr);
if((int)(isource->offset + length) <= isource->size)
{
memcpy(data, isource->data+isource->offset, length);
isource->offset += length;
}
else
{
png_error(png_ptr, "pngReaderCallback failed");
}
}
}
Texture2D::PixelFormat getDevicePixelFormat(Texture2D::PixelFormat format)
{
switch (format) {
case Texture2D::PixelFormat::PVRTC4:
case Texture2D::PixelFormat::PVRTC4A:
case Texture2D::PixelFormat::PVRTC2:
case Texture2D::PixelFormat::PVRTC2A:
if(Configuration::getInstance()->supportsPVRTC())
return format;
else
return Texture2D::PixelFormat::RGBA8888;
case Texture2D::PixelFormat::ETC:
if(Configuration::getInstance()->supportsETC())
return format;
else
return Texture2D::PixelFormat::RGB888;
default:
return format;
}
}
//////////////////////////////////////////////////////////////////////////
// Implement Image
//////////////////////////////////////////////////////////////////////////
Image::Image()
: _data(nullptr)
, _dataLen(0)
, _width(0)
, _height(0)
, _unpack(false)
, _fileType(Format::UNKOWN)
, _renderFormat(Texture2D::PixelFormat::NONE)
, _numberOfMipmaps(0)
, _hasPremultipliedAlpha(true)
{
}
Image::~Image()
{
if(_unpack)
{
for (unsigned int i = 0; i < _numberOfMipmaps; ++i)
CC_SAFE_DELETE_ARRAY(_mipmaps[i].address);
}
else
CC_SAFE_FREE(_data);
}
bool Image::initWithImageFile(const std::string& path)
{
bool ret = false;
_filePath = FileUtils::getInstance()->fullPathForFilename(path);
#ifdef EMSCRIPTEN
// Emscripten includes a re-implementation of SDL that uses HTML5 canvas
// operations underneath. Consequently, loading images via IMG_Load (an SDL
// API) will be a lot faster than running libpng et al as compiled with
// Emscripten.
SDL_Surface *iSurf = IMG_Load(fullPath.c_str());
int size = 4 * (iSurf->w * iSurf->h);
ret = initWithRawData((const unsigned char*)iSurf->pixels, size, iSurf->w, iSurf->h, 8, true);
unsigned int *tmp = (unsigned int *)_data;
int nrPixels = iSurf->w * iSurf->h;
for(int i = 0; i < nrPixels; i++)
{
unsigned char *p = _data + i * 4;
tmp[i] = CC_RGB_PREMULTIPLY_ALPHA( p[0], p[1], p[2], p[3] );
}
SDL_FreeSurface(iSurf);
#else
Data data = FileUtils::getInstance()->getDataFromFile(_filePath);
if (!data.isNull())
{
ret = initWithImageData(data.getBytes(), data.getSize());
}
#endif // EMSCRIPTEN
return ret;
}
bool Image::initWithImageFileThreadSafe(const std::string& fullpath)
{
bool ret = false;
_filePath = fullpath;
Data data = FileUtils::getInstance()->getDataFromFile(fullpath);
if (!data.isNull())
{
ret = initWithImageData(data.getBytes(), data.getSize());
}
return ret;
}
bool Image::initWithImageData(const unsigned char * data, ssize_t dataLen)
{
bool ret = false;
do
{
CC_BREAK_IF(! data || dataLen <= 0);
unsigned char* unpackedData = nullptr;
ssize_t unpackedLen = 0;
//detecgt and unzip the compress file
if (ZipUtils::isCCZBuffer(data, dataLen))
{
unpackedLen = ZipUtils::inflateCCZBuffer(data, dataLen, &unpackedData);
}
else if (ZipUtils::isGZipBuffer(data, dataLen))
{
unpackedLen = ZipUtils::inflateMemory(const_cast<unsigned char*>(data), dataLen, &unpackedData);
}
else
{
unpackedData = const_cast<unsigned char*>(data);
unpackedLen = dataLen;
}
_fileType = detectFormat(unpackedData, unpackedLen);
switch (_fileType)
{
case Format::PNG:
ret = initWithPngData(unpackedData, unpackedLen);
break;
case Format::JPG:
ret = initWithJpgData(unpackedData, unpackedLen);
break;
case Format::TIFF:
ret = initWithTiffData(unpackedData, unpackedLen);
break;
case Format::WEBP:
ret = initWithWebpData(unpackedData, unpackedLen);
break;
case Format::PVR:
ret = initWithPVRData(unpackedData, unpackedLen);
break;
case Format::ETC:
ret = initWithETCData(unpackedData, unpackedLen);
break;
case Format::S3TC:
ret = initWithS3TCData(unpackedData, unpackedLen);
break;
case Format::ATITC:
ret = initWithATITCData(unpackedData, unpackedLen);
break;
default:
{
// load and detect image format
tImageTGA* tgaData = tgaLoadBuffer(unpackedData, unpackedLen);
if (tgaData != nullptr && tgaData->status == TGA_OK)
{
ret = initWithTGAData(tgaData);
}
else
{
CCAssert(false, "unsupport image format!");
}
free(tgaData);
break;
}
}
if(unpackedData != data)
{
free(unpackedData);
}
} while (0);
return ret;
}
bool Image::isPng(const unsigned char * data, ssize_t dataLen)
{
if (dataLen <= 8)
{
return false;
}
static const unsigned char PNG_SIGNATURE[] = {0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a};
return memcmp(PNG_SIGNATURE, data, sizeof(PNG_SIGNATURE)) == 0;
}
bool Image::isEtc(const unsigned char * data, ssize_t dataLen)
{
return etc1_pkm_is_valid((etc1_byte*)data) ? true : false;
}
bool Image::isS3TC(const unsigned char * data, ssize_t dataLen)
{
S3TCTexHeader *header = (S3TCTexHeader *)data;
if (strncmp(header->fileCode, "DDS", 3) != 0)
{
CCLOG("cocos2d: the file is not a dds file!");
return false;
}
return true;
}
bool Image::isATITC(const unsigned char *data, ssize_t dataLen)
{
ATITCTexHeader *header = (ATITCTexHeader *)data;
if (strncmp(&header->identifier[1], "KTX", 3) != 0)
{
CCLOG("cocos3d: the file is not a ktx file!");
return false;
}
return true;
}
bool Image::isJpg(const unsigned char * data, ssize_t dataLen)
{
if (dataLen <= 4)
{
return false;
}
static const unsigned char JPG_SOI[] = {0xFF, 0xD8};
return memcmp(data, JPG_SOI, 2) == 0;
}
bool Image::isTiff(const unsigned char * data, ssize_t dataLen)
{
if (dataLen <= 4)
{
return false;
}
static const char* TIFF_II = "II";
static const char* TIFF_MM = "MM";
return (memcmp(data, TIFF_II, 2) == 0 && *(static_cast<const unsigned char*>(data) + 2) == 42 && *(static_cast<const unsigned char*>(data) + 3) == 0) ||
(memcmp(data, TIFF_MM, 2) == 0 && *(static_cast<const unsigned char*>(data) + 2) == 0 && *(static_cast<const unsigned char*>(data) + 3) == 42);
}
bool Image::isWebp(const unsigned char * data, ssize_t dataLen)
{
if (dataLen <= 12)
{
return false;
}
static const char* WEBP_RIFF = "RIFF";
static const char* WEBP_WEBP = "WEBP";
return memcmp(data, WEBP_RIFF, 4) == 0
&& memcmp(static_cast<const unsigned char*>(data) + 8, WEBP_WEBP, 4) == 0;
}
bool Image::isPvr(const unsigned char * data, ssize_t dataLen)
{
if (static_cast<size_t>(dataLen) < sizeof(PVRv2TexHeader) || static_cast<size_t>(dataLen) < sizeof(PVRv3TexHeader))
{
return false;
}
const PVRv2TexHeader* headerv2 = static_cast<const PVRv2TexHeader*>(static_cast<const void*>(data));
const PVRv3TexHeader* headerv3 = static_cast<const PVRv3TexHeader*>(static_cast<const void*>(data));
return memcmp(&headerv2->pvrTag, gPVRTexIdentifier, strlen(gPVRTexIdentifier)) == 0 || CC_SWAP_INT32_BIG_TO_HOST(headerv3->version) == 0x50565203;
}
Image::Format Image::detectFormat(const unsigned char * data, ssize_t dataLen)
{
if (isPng(data, dataLen))
{
return Format::PNG;
}
else if (isJpg(data, dataLen))
{
return Format::JPG;
}
else if (isTiff(data, dataLen))
{
return Format::TIFF;
}
else if (isWebp(data, dataLen))
{
return Format::WEBP;
}
else if (isPvr(data, dataLen))
{
return Format::PVR;
}
else if (isEtc(data, dataLen))
{
return Format::ETC;
}
else if (isS3TC(data, dataLen))
{
return Format::S3TC;
}
else if (isATITC(data, dataLen))
{
return Format::ATITC;
}
else
{
return Format::UNKOWN;
}
}
int Image::getBitPerPixel()
{
return Texture2D::getPixelFormatInfoMap().at(_renderFormat).bpp;
}
bool Image::hasAlpha()
{
return Texture2D::getPixelFormatInfoMap().at(_renderFormat).alpha;
}
bool Image::isCompressed()
{
return Texture2D::getPixelFormatInfoMap().at(_renderFormat).compressed;
}
bool Image::initWithJpgData(const unsigned char * data, ssize_t dataLen)
{
_hasPremultipliedAlpha = false;
JPEGModule *jpegModule = static_cast<JPEGModule*>(ModuleManager::getModule("jpeg"));
if (jpegModule)
{
DataFromModule dataFromJPEGInit;
bool result = jpegModule->initWithJPEGData(data, dataLen, dataFromJPEGInit);
_width = dataFromJPEGInit.width;
_height = dataFromJPEGInit.height;
_renderFormat = dataFromJPEGInit.renderFormat;
_dataLen = dataFromJPEGInit.dataLength;
_data = dataFromJPEGInit.data;
return result;
}
else
{
CCLOG("jpeg module is not enabled");
return false;
}
}
bool Image::initWithPngData(const unsigned char * data, ssize_t dataLen)
{
// length of bytes to check if it is a valid png file
#define PNGSIGSIZE 8
bool bRet = false;
png_byte header[PNGSIGSIZE] = {0};
png_structp png_ptr = 0;
png_infop info_ptr = 0;
do
{
// png header len is 8 bytes
CC_BREAK_IF(dataLen < PNGSIGSIZE);
// check the data is png or not
memcpy(header, data, PNGSIGSIZE);
CC_BREAK_IF(png_sig_cmp(header, 0, PNGSIGSIZE));
// init png_struct
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
CC_BREAK_IF(! png_ptr);
// init png_info
info_ptr = png_create_info_struct(png_ptr);
CC_BREAK_IF(!info_ptr);
#if (CC_TARGET_PLATFORM != CC_PLATFORM_BADA && CC_TARGET_PLATFORM != CC_PLATFORM_NACL)
CC_BREAK_IF(setjmp(png_jmpbuf(png_ptr)));
#endif
// set the read call back function
tImageSource imageSource;
imageSource.data = (unsigned char*)data;
imageSource.size = dataLen;
imageSource.offset = 0;
png_set_read_fn(png_ptr, &imageSource, pngReadCallback);
// read png header info
// read png file info
png_read_info(png_ptr, info_ptr);
_width = png_get_image_width(png_ptr, info_ptr);
_height = png_get_image_height(png_ptr, info_ptr);
png_byte bit_depth = png_get_bit_depth(png_ptr, info_ptr);
png_uint_32 color_type = png_get_color_type(png_ptr, info_ptr);
//CCLOG("color type %u", color_type);
// force palette images to be expanded to 24-bit RGB
// it may include alpha channel
if (color_type == PNG_COLOR_TYPE_PALETTE)
{
png_set_palette_to_rgb(png_ptr);
}
// low-bit-depth grayscale images are to be expanded to 8 bits
if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
{
bit_depth = 8;
png_set_expand_gray_1_2_4_to_8(png_ptr);
}
// expand any tRNS chunk data into a full alpha channel
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
{
png_set_tRNS_to_alpha(png_ptr);
}
// reduce images with 16-bit samples to 8 bits
if (bit_depth == 16)
{
png_set_strip_16(png_ptr);
}
// Expanded earlier for grayscale, now take care of palette and rgb
if (bit_depth < 8) {
png_set_packing(png_ptr);
}
// update info
png_read_update_info(png_ptr, info_ptr);
bit_depth = png_get_bit_depth(png_ptr, info_ptr);
color_type = png_get_color_type(png_ptr, info_ptr);
switch (color_type)
{
case PNG_COLOR_TYPE_GRAY:
_renderFormat = Texture2D::PixelFormat::I8;
break;
case PNG_COLOR_TYPE_GRAY_ALPHA:
_renderFormat = Texture2D::PixelFormat::AI88;
break;
case PNG_COLOR_TYPE_RGB:
_renderFormat = Texture2D::PixelFormat::RGB888;
break;
case PNG_COLOR_TYPE_RGB_ALPHA:
_renderFormat = Texture2D::PixelFormat::RGBA8888;
break;
default:
break;
}
// read png data
png_size_t rowbytes;
png_bytep* row_pointers = (png_bytep*)malloc( sizeof(png_bytep) * _height );
rowbytes = png_get_rowbytes(png_ptr, info_ptr);
_dataLen = rowbytes * _height;
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
if(!_data)
{
if (row_pointers != nullptr)
{
free(row_pointers);
}
break;
}
for (unsigned short i = 0; i < _height; ++i)
{
row_pointers[i] = _data + i*rowbytes;
}
png_read_image(png_ptr, row_pointers);
png_read_end(png_ptr, nullptr);
// premultiplied alpha for RGBA8888
if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
premultipliedAlpha();
}
else
{
_hasPremultipliedAlpha = false;
}
if (row_pointers != nullptr)
{
free(row_pointers);
}
bRet = true;
} while (0);
if (png_ptr)
{
png_destroy_read_struct(&png_ptr, (info_ptr) ? &info_ptr : 0, 0);
}
return bRet;
}
bool Image::initWithTiffData(const unsigned char * data, ssize_t dataLen)
{
_hasPremultipliedAlpha = true;
TIFFModule *tiffModule = static_cast<TIFFModule*>(ModuleManager::getModule("tiff"));
if (tiffModule)
{
DataFromModule dataFromTIFFInit;
bool result = tiffModule->initWithTIFFData(data, dataLen, dataFromTIFFInit);
_width = dataFromTIFFInit.width;
_height = dataFromTIFFInit.height;
_renderFormat = dataFromTIFFInit.renderFormat;
_dataLen = dataFromTIFFInit.dataLength;
_data = dataFromTIFFInit.data;
return result;
}
else
{
CCLOG("tiff module is not enabled");
return false;
}
}
namespace
{
bool testFormatForPvr2TCSupport(PVR2TexturePixelFormat format)
{
return true;
}
bool testFormatForPvr3TCSupport(PVR3TexturePixelFormat format)
{
switch (format) {
case PVR3TexturePixelFormat::DXT1:
case PVR3TexturePixelFormat::DXT3:
case PVR3TexturePixelFormat::DXT5:
return Configuration::getInstance()->supportsS3TC();
case PVR3TexturePixelFormat::BGRA8888:
return Configuration::getInstance()->supportsBGRA8888();
case PVR3TexturePixelFormat::PVRTC2BPP_RGB:
case PVR3TexturePixelFormat::PVRTC2BPP_RGBA:
case PVR3TexturePixelFormat::PVRTC4BPP_RGB:
case PVR3TexturePixelFormat::PVRTC4BPP_RGBA:
case PVR3TexturePixelFormat::ETC1:
case PVR3TexturePixelFormat::RGBA8888:
case PVR3TexturePixelFormat::RGBA4444:
case PVR3TexturePixelFormat::RGBA5551:
case PVR3TexturePixelFormat::RGB565:
case PVR3TexturePixelFormat::RGB888:
case PVR3TexturePixelFormat::A8:
case PVR3TexturePixelFormat::L8:
case PVR3TexturePixelFormat::LA88:
return true;
default:
return false;
}
}
}
bool Image::initWithPVRv2Data(const unsigned char * data, ssize_t dataLen)
{
int dataLength = 0, dataOffset = 0, dataSize = 0;
int blockSize = 0, widthBlocks = 0, heightBlocks = 0;
int width = 0, height = 0;
//Cast first sizeof(PVRTexHeader) bytes of data stream as PVRTexHeader
const PVRv2TexHeader *header = static_cast<const PVRv2TexHeader *>(static_cast<const void*>(data));
//Make sure that tag is in correct formatting
if (memcmp(&header->pvrTag, gPVRTexIdentifier, strlen(gPVRTexIdentifier)) != 0)
{
return false;
}
Configuration *configuration = Configuration::getInstance();
//can not detect the premultiplied alpha from pvr file, use _PVRHaveAlphaPremultiplied instead.
_hasPremultipliedAlpha = _PVRHaveAlphaPremultiplied;
unsigned int flags = CC_SWAP_INT32_LITTLE_TO_HOST(header->flags);
PVR2TexturePixelFormat formatFlags = static_cast<PVR2TexturePixelFormat>(flags & PVR_TEXTURE_FLAG_TYPE_MASK);
bool flipped = (flags & (unsigned int)PVR2TextureFlag::VerticalFlip) ? true : false;
if (flipped)
{
CCLOG("cocos2d: WARNING: Image is flipped. Regenerate it using PVRTexTool");
}
if (! configuration->supportsNPOT() &&
(static_cast<int>(header->width) != ccNextPOT(header->width)
|| static_cast<int>(header->height) != ccNextPOT(header->height)))
{
CCLOG("cocos2d: ERROR: Loading an NPOT texture (%dx%d) but is not supported on this device", header->width, header->height);
return false;
}
if (!testFormatForPvr2TCSupport(formatFlags))
{
CCLOG("cocos2d: WARNING: Unsupported PVR Pixel Format: 0x%02X. Re-encode it with a OpenGL pixel format variant", (int)formatFlags);
return false;
}
if (v2_pixel_formathash.find(formatFlags) == v2_pixel_formathash.end())
{
CCLOG("cocos2d: WARNING: Unsupported PVR Pixel Format: 0x%02X. Re-encode it with a OpenGL pixel format variant", (int)formatFlags);
return false;
}
auto it = Texture2D::getPixelFormatInfoMap().find(getDevicePixelFormat(v2_pixel_formathash.at(formatFlags)));
if (it == Texture2D::getPixelFormatInfoMap().end())
{
CCLOG("cocos2d: WARNING: Unsupported PVR Pixel Format: 0x%02X. Re-encode it with a OpenGL pixel format variant", (int)formatFlags);
return false;
}
_renderFormat = it->first;
int bpp = it->second.bpp;
//Reset num of mipmaps
_numberOfMipmaps = 0;
//Get size of mipmap
_width = width = CC_SWAP_INT32_LITTLE_TO_HOST(header->width);
_height = height = CC_SWAP_INT32_LITTLE_TO_HOST(header->height);
//Get ptr to where data starts..
dataLength = CC_SWAP_INT32_LITTLE_TO_HOST(header->dataLength);
//Move by size of header
_dataLen = dataLen - sizeof(PVRv2TexHeader);
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
memcpy(_data, (unsigned char*)data + sizeof(PVRv2TexHeader), _dataLen);
// Calculate the data size for each texture level and respect the minimum number of blocks
while (dataOffset < dataLength)
{
switch (formatFlags) {
case PVR2TexturePixelFormat::PVRTC2BPP_RGBA:
if(!Configuration::getInstance()->supportsPVRTC())
{
CCLOG("cocos2d: Hardware PVR decoder not present. Using software decoder");
_unpack = true;
_mipmaps[_numberOfMipmaps].len = width*height*4;
_mipmaps[_numberOfMipmaps].address = new unsigned char[width*height*4];
PVRTDecompressPVRTC(_data+dataOffset,width,height,_mipmaps[_numberOfMipmaps].address, true);
bpp = 2;
}
blockSize = 8 * 4; // Pixel by pixel block size for 2bpp
widthBlocks = width / 8;
heightBlocks = height / 4;
break;
case PVR2TexturePixelFormat::PVRTC4BPP_RGBA:
if(!Configuration::getInstance()->supportsPVRTC())
{
CCLOG("cocos2d: Hardware PVR decoder not present. Using software decoder");
_unpack = true;
_mipmaps[_numberOfMipmaps].len = width*height*4;
_mipmaps[_numberOfMipmaps].address = new unsigned char[width*height*4];
PVRTDecompressPVRTC(_data+dataOffset,width,height,_mipmaps[_numberOfMipmaps].address, false);
bpp = 4;
}
blockSize = 4 * 4; // Pixel by pixel block size for 4bpp
widthBlocks = width / 4;
heightBlocks = height / 4;
break;
case PVR2TexturePixelFormat::BGRA8888:
if (Configuration::getInstance()->supportsBGRA8888() == false)
{
CCLOG("cocos2d: Image. BGRA8888 not supported on this device");
return false;
}
default:
blockSize = 1;
widthBlocks = width;
heightBlocks = height;
break;
}
// Clamp to minimum number of blocks
if (widthBlocks < 2)
{
widthBlocks = 2;
}
if (heightBlocks < 2)
{
heightBlocks = 2;
}
dataSize = widthBlocks * heightBlocks * ((blockSize * bpp) / 8);
int packetLength = (dataLength - dataOffset);
packetLength = packetLength > dataSize ? dataSize : packetLength;
//Make record to the mipmaps array and increment counter
if(!_unpack)
{
_mipmaps[_numberOfMipmaps].address = _data + dataOffset;
_mipmaps[_numberOfMipmaps].len = packetLength;
}
_numberOfMipmaps++;
dataOffset += packetLength;
//Update width and height to the next lower power of two
width = MAX(width >> 1, 1);
height = MAX(height >> 1, 1);
}
if(_unpack)
{
_data = _mipmaps[0].address;
_dataLen = _mipmaps[0].len;
}
return true;
}
bool Image::initWithPVRv3Data(const unsigned char * data, ssize_t dataLen)
{
if (static_cast<size_t>(dataLen) < sizeof(PVRv3TexHeader))
{
return false;
}
const PVRv3TexHeader *header = static_cast<const PVRv3TexHeader *>(static_cast<const void*>(data));
// validate version
if (CC_SWAP_INT32_BIG_TO_HOST(header->version) != 0x50565203)
{
CCLOG("cocos2d: WARNING: pvr file version mismatch");
return false;
}
// parse pixel format
PVR3TexturePixelFormat pixelFormat = static_cast<PVR3TexturePixelFormat>(header->pixelFormat);
if (!testFormatForPvr3TCSupport(pixelFormat))
{
CCLOG("cocos2d: WARNING: Unsupported PVR Pixel Format: 0x%016llX. Re-encode it with a OpenGL pixel format variant",
static_cast<unsigned long long>(pixelFormat));
return false;
}
if (v3_pixel_formathash.find(pixelFormat) == v3_pixel_formathash.end())
{
CCLOG("cocos2d: WARNING: Unsupported PVR Pixel Format: 0x%016llX. Re-encode it with a OpenGL pixel format variant",
static_cast<unsigned long long>(pixelFormat));
return false;
}
auto it = Texture2D::getPixelFormatInfoMap().find(getDevicePixelFormat(v3_pixel_formathash.at(pixelFormat)));
if (it == Texture2D::getPixelFormatInfoMap().end())
{
CCLOG("cocos2d: WARNING: Unsupported PVR Pixel Format: 0x%016llX. Re-encode it with a OpenGL pixel format variant",
static_cast<unsigned long long>(pixelFormat));
return false;
}
_renderFormat = it->first;
int bpp = it->second.bpp;
// flags
int flags = CC_SWAP_INT32_LITTLE_TO_HOST(header->flags);
// PVRv3 specifies premultiply alpha in a flag -- should always respect this in PVRv3 files
if (flags & (unsigned int)PVR3TextureFlag::PremultipliedAlpha)
{
_hasPremultipliedAlpha = true;
}
// sizing
int width = CC_SWAP_INT32_LITTLE_TO_HOST(header->width);
int height = CC_SWAP_INT32_LITTLE_TO_HOST(header->height);
_width = width;
_height = height;
int dataOffset = 0, dataSize = 0;
int blockSize = 0, widthBlocks = 0, heightBlocks = 0;
_dataLen = dataLen - (sizeof(PVRv3TexHeader) + header->metadataLength);
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
memcpy(_data, static_cast<const unsigned char*>(data) + sizeof(PVRv3TexHeader) + header->metadataLength, _dataLen);
_numberOfMipmaps = header->numberOfMipmaps;
CCAssert(_numberOfMipmaps < MIPMAP_MAX, "Image: Maximum number of mimpaps reached. Increate the CC_MIPMAP_MAX value");
for (int i = 0; i < _numberOfMipmaps; i++)
{
switch ((PVR3TexturePixelFormat)pixelFormat)
{
case PVR3TexturePixelFormat::PVRTC2BPP_RGB :
case PVR3TexturePixelFormat::PVRTC2BPP_RGBA :
if(!Configuration::getInstance()->supportsPVRTC())
{
CCLOG("cocos2d: Hardware PVR decoder not present. Using software decoder");
_unpack = true;
_mipmaps[i].len = width*height*4;
_mipmaps[i].address = new unsigned char[width*height*4];
PVRTDecompressPVRTC(_data+dataOffset,width,height,_mipmaps[i].address, true);
bpp = 2;
}
blockSize = 8 * 4; // Pixel by pixel block size for 2bpp
widthBlocks = width / 8;
heightBlocks = height / 4;
break;
case PVR3TexturePixelFormat::PVRTC4BPP_RGB :
case PVR3TexturePixelFormat::PVRTC4BPP_RGBA :
if(!Configuration::getInstance()->supportsPVRTC())
{
CCLOG("cocos2d: Hardware PVR decoder not present. Using software decoder");
_unpack = true;
_mipmaps[i].len = width*height*4;
_mipmaps[i].address = new unsigned char[width*height*4];
PVRTDecompressPVRTC(_data+dataOffset,width,height,_mipmaps[i].address, false);
bpp = 4;
}
blockSize = 4 * 4; // Pixel by pixel block size for 4bpp
widthBlocks = width / 4;
heightBlocks = height / 4;
break;
case PVR3TexturePixelFormat::ETC1:
if(!Configuration::getInstance()->supportsETC())
{
CCLOG("cocos2d: Hardware ETC1 decoder not present. Using software decoder");
int bytePerPixel = 3;
unsigned int stride = width * bytePerPixel;
_unpack = true;
_mipmaps[i].len = width*height*bytePerPixel;
_mipmaps[i].address = new unsigned char[width*height*bytePerPixel];
if (etc1_decode_image(static_cast<const unsigned char*>(_data+dataOffset), static_cast<etc1_byte*>(_mipmaps[i].address), width, height, bytePerPixel, stride) != 0)
{
return false;
}
}
blockSize = 4 * 4; // Pixel by pixel block size for 4bpp
widthBlocks = width / 4;
heightBlocks = height / 4;
break;
case PVR3TexturePixelFormat::BGRA8888:
if( ! Configuration::getInstance()->supportsBGRA8888())
{
CCLOG("cocos2d: Image. BGRA8888 not supported on this device");
return false;
}
default:
blockSize = 1;
widthBlocks = width;
heightBlocks = height;
break;
}
// Clamp to minimum number of blocks
if (widthBlocks < 2)
{
widthBlocks = 2;
}
if (heightBlocks < 2)
{
heightBlocks = 2;
}
dataSize = widthBlocks * heightBlocks * ((blockSize * bpp) / 8);
auto packetLength = _dataLen - dataOffset;
packetLength = packetLength > dataSize ? dataSize : packetLength;
if(!_unpack)
{
_mipmaps[i].address = _data + dataOffset;
_mipmaps[i].len = static_cast<int>(packetLength);
}
dataOffset += packetLength;
CCAssert(dataOffset <= _dataLen, "CCTexurePVR: Invalid lenght");
width = MAX(width >> 1, 1);
height = MAX(height >> 1, 1);
}
if(_unpack)
{
_data = _mipmaps[0].address;
_dataLen = _mipmaps[0].len;
}
return true;
}
bool Image::initWithETCData(const unsigned char * data, ssize_t dataLen)
{
const etc1_byte* header = static_cast<const etc1_byte*>(data);
//check the data
if(!etc1_pkm_is_valid(header))
{
return false;
}
_width = etc1_pkm_get_width(header);
_height = etc1_pkm_get_height(header);
if( 0 == _width || 0 == _height )
{
return false;
}
if(Configuration::getInstance()->supportsETC())
{
//old opengl version has no define for GL_ETC1_RGB8_OES, add macro to make compiler happy.
#ifdef GL_ETC1_RGB8_OES
_renderFormat = Texture2D::PixelFormat::ETC;
_dataLen = dataLen - ETC_PKM_HEADER_SIZE;
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
memcpy(_data, static_cast<const unsigned char*>(data) + ETC_PKM_HEADER_SIZE, _dataLen);
return true;
#endif
}
else
{
CCLOG("cocos2d: Hardware ETC1 decoder not present. Using software decoder");
//if it is not gles or device do not support ETC, decode texture by software
int bytePerPixel = 3;
unsigned int stride = _width * bytePerPixel;
_renderFormat = Texture2D::PixelFormat::RGB888;
_dataLen = _width * _height * bytePerPixel;
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
if (etc1_decode_image(static_cast<const unsigned char*>(data) + ETC_PKM_HEADER_SIZE, static_cast<etc1_byte*>(_data), _width, _height, bytePerPixel, stride) != 0)
{
_dataLen = 0;
if (_data != nullptr)
{
free(_data);
}
return false;
}
return true;
}
return false;
}
bool Image::initWithTGAData(tImageTGA* tgaData)
{
bool ret = false;
do
{
CC_BREAK_IF(tgaData == nullptr);
// tgaLoadBuffer only support type 2, 3, 10
if (2 == tgaData->type || 10 == tgaData->type)
{
// true color
// unsupport RGB555
if (tgaData->pixelDepth == 16)
{
_renderFormat = Texture2D::PixelFormat::RGB5A1;
}
else if(tgaData->pixelDepth == 24)
{
_renderFormat = Texture2D::PixelFormat::RGB888;
}
else if(tgaData->pixelDepth == 32)
{
_renderFormat = Texture2D::PixelFormat::RGBA8888;
}
else
{
CCLOG("Image WARNING: unsupport true color tga data pixel format. FILE: %s", _filePath.c_str());
break;
}
}
else if(3 == tgaData->type)
{
// gray
if (8 == tgaData->pixelDepth)
{
_renderFormat = Texture2D::PixelFormat::I8;
}
else
{
// actually this won't happen, if it happens, maybe the image file is not a tga
CCLOG("Image WARNING: unsupport gray tga data pixel format. FILE: %s", _filePath.c_str());
break;
}
}
_width = tgaData->width;
_height = tgaData->height;
_data = tgaData->imageData;
_dataLen = _width * _height * tgaData->pixelDepth / 8;
_fileType = Format::TGA;
_hasPremultipliedAlpha = false;
ret = true;
}while(false);
if (ret)
{
const unsigned char tgaSuffix[] = ".tga";
for(int i = 0; i < 4; ++i)
{
if (tolower(_filePath[_filePath.length() - i - 1]) != tgaSuffix[3 - i])
{
CCLOG("Image WARNING: the image file suffix is not tga, but parsed as a tga image file. FILE: %s", _filePath.c_str());
break;
};
}
}
else
{
if (tgaData && tgaData->imageData != nullptr)
{
free(tgaData->imageData);
_data = nullptr;
}
}
return ret;
}
namespace
{
static const uint32_t makeFourCC(char ch0, char ch1, char ch2, char ch3)
{
const uint32_t fourCC = ((uint32_t)(char)(ch0) | ((uint32_t)(char)(ch1) << 8) | ((uint32_t)(char)(ch2) << 16) | ((uint32_t)(char)(ch3) << 24 ));
return fourCC;
}
}
bool Image::initWithS3TCData(const unsigned char * data, ssize_t dataLen)
{
const uint32_t FOURCC_DXT1 = makeFourCC('D', 'X', 'T', '1');
const uint32_t FOURCC_DXT3 = makeFourCC('D', 'X', 'T', '3');
const uint32_t FOURCC_DXT5 = makeFourCC('D', 'X', 'T', '5');
/* load the .dds file */
S3TCTexHeader *header = (S3TCTexHeader *)data;
unsigned char *pixelData = static_cast<unsigned char*>(malloc((dataLen - sizeof(S3TCTexHeader)) * sizeof(unsigned char)));
memcpy((void *)pixelData, data + sizeof(S3TCTexHeader), dataLen - sizeof(S3TCTexHeader));
_width = header->ddsd.width;
_height = header->ddsd.height;
_numberOfMipmaps = MAX(1, header->ddsd.DUMMYUNIONNAMEN2.mipMapCount); //if dds header reports 0 mipmaps, set to 1 to force correct software decoding (if needed).
_dataLen = 0;
int blockSize = (FOURCC_DXT1 == header->ddsd.DUMMYUNIONNAMEN4.ddpfPixelFormat.fourCC) ? 8 : 16;
/* calculate the dataLen */
int width = _width;
int height = _height;
if (Configuration::getInstance()->supportsS3TC()) //compressed data length
{
_dataLen = dataLen - sizeof(S3TCTexHeader);
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
memcpy((void *)_data,(void *)pixelData , _dataLen);
}
else //decompressed data length
{
for (int i = 0; i < _numberOfMipmaps && (width || height); ++i)
{
if (width == 0) width = 1;
if (height == 0) height = 1;
_dataLen += (height * width *4);
width >>= 1;
height >>= 1;
}
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
}
/* if hardware supports s3tc, set pixelformat before loading mipmaps, to support non-mipmapped textures */
if (Configuration::getInstance()->supportsS3TC())
{ //decode texture throught hardware
if (FOURCC_DXT1 == header->ddsd.DUMMYUNIONNAMEN4.ddpfPixelFormat.fourCC)
{
_renderFormat = Texture2D::PixelFormat::S3TC_DXT1;
}
else if (FOURCC_DXT3 == header->ddsd.DUMMYUNIONNAMEN4.ddpfPixelFormat.fourCC)
{
_renderFormat = Texture2D::PixelFormat::S3TC_DXT3;
}
else if (FOURCC_DXT5 == header->ddsd.DUMMYUNIONNAMEN4.ddpfPixelFormat.fourCC)
{
_renderFormat = Texture2D::PixelFormat::S3TC_DXT5;
}
} else { //will software decode
_renderFormat = Texture2D::PixelFormat::RGBA8888;
}
/* load the mipmaps */
int encodeOffset = 0;
int decodeOffset = 0;
width = _width; height = _height;
for (int i = 0; i < _numberOfMipmaps && (width || height); ++i)
{
if (width == 0) width = 1;
if (height == 0) height = 1;
int size = ((width+3)/4)*((height+3)/4)*blockSize;
if (Configuration::getInstance()->supportsS3TC())
{ //decode texture throught hardware
_mipmaps[i].address = (unsigned char *)_data + encodeOffset;
_mipmaps[i].len = size;
}
else
{ //if it is not gles or device do not support S3TC, decode texture by software
CCLOG("cocos2d: Hardware S3TC decoder not present. Using software decoder");
int bytePerPixel = 4;
unsigned int stride = width * bytePerPixel;
std::vector<unsigned char> decodeImageData(stride * height);
if (FOURCC_DXT1 == header->ddsd.DUMMYUNIONNAMEN4.ddpfPixelFormat.fourCC)
{
s3tc_decode(pixelData + encodeOffset, &decodeImageData[0], width, height, S3TCDecodeFlag::DXT1);
}
else if (FOURCC_DXT3 == header->ddsd.DUMMYUNIONNAMEN4.ddpfPixelFormat.fourCC)
{
s3tc_decode(pixelData + encodeOffset, &decodeImageData[0], width, height, S3TCDecodeFlag::DXT3);
}
else if (FOURCC_DXT5 == header->ddsd.DUMMYUNIONNAMEN4.ddpfPixelFormat.fourCC)
{
s3tc_decode(pixelData + encodeOffset, &decodeImageData[0], width, height, S3TCDecodeFlag::DXT5);
}
_mipmaps[i].address = (unsigned char *)_data + decodeOffset;
_mipmaps[i].len = (stride * height);
memcpy((void *)_mipmaps[i].address, (void *)&decodeImageData[0], _mipmaps[i].len);
decodeOffset += stride * height;
}
encodeOffset += size;
width >>= 1;
height >>= 1;
}
/* end load the mipmaps */
if (pixelData != nullptr)
{
free(pixelData);
};
return true;
}
bool Image::initWithATITCData(const unsigned char *data, ssize_t dataLen)
{
/* load the .ktx file */
ATITCTexHeader *header = (ATITCTexHeader *)data;
_width = header->pixelWidth;
_height = header->pixelHeight;
_numberOfMipmaps = header->numberOfMipmapLevels;
int blockSize = 0;
switch (header->glInternalFormat)
{
case CC_GL_ATC_RGB_AMD:
blockSize = 8;
break;
case CC_GL_ATC_RGBA_EXPLICIT_ALPHA_AMD:
blockSize = 16;
break;
case CC_GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
blockSize = 16;
break;
default:
break;
}
/* pixelData point to the compressed data address */
unsigned char *pixelData = (unsigned char *)data + sizeof(ATITCTexHeader) + header->bytesOfKeyValueData + 4;
/* caculate the dataLen */
int width = _width;
int height = _height;
if (Configuration::getInstance()->supportsATITC()) //compressed data length
{
_dataLen = dataLen - sizeof(ATITCTexHeader) - header->bytesOfKeyValueData - 4;
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
memcpy((void *)_data,(void *)pixelData , _dataLen);
}
else //decompressed data length
{
for (int i = 0; i < _numberOfMipmaps && (width || height); ++i)
{
if (width == 0) width = 1;
if (height == 0) height = 1;
_dataLen += (height * width *4);
width >>= 1;
height >>= 1;
}
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
}
/* load the mipmaps */
int encodeOffset = 0;
int decodeOffset = 0;
width = _width; height = _height;
for (int i = 0; i < _numberOfMipmaps && (width || height); ++i)
{
if (width == 0) width = 1;
if (height == 0) height = 1;
int size = ((width+3)/4)*((height+3)/4)*blockSize;
if (Configuration::getInstance()->supportsATITC())
{
/* decode texture throught hardware */
CCLOG("this is atitc H decode");
switch (header->glInternalFormat)
{
case CC_GL_ATC_RGB_AMD:
_renderFormat = Texture2D::PixelFormat::ATC_RGB;
break;
case CC_GL_ATC_RGBA_EXPLICIT_ALPHA_AMD:
_renderFormat = Texture2D::PixelFormat::ATC_EXPLICIT_ALPHA;
break;
case CC_GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
_renderFormat = Texture2D::PixelFormat::ATC_INTERPOLATED_ALPHA;
break;
default:
break;
}
_mipmaps[i].address = (unsigned char *)_data + encodeOffset;
_mipmaps[i].len = size;
}
else
{
/* if it is not gles or device do not support ATITC, decode texture by software */
CCLOG("cocos2d: Hardware ATITC decoder not present. Using software decoder");
int bytePerPixel = 4;
unsigned int stride = width * bytePerPixel;
_renderFormat = Texture2D::PixelFormat::RGBA8888;
std::vector<unsigned char> decodeImageData(stride * height);
switch (header->glInternalFormat)
{
case CC_GL_ATC_RGB_AMD:
atitc_decode(pixelData + encodeOffset, &decodeImageData[0], width, height, ATITCDecodeFlag::ATC_RGB);
break;
case CC_GL_ATC_RGBA_EXPLICIT_ALPHA_AMD:
atitc_decode(pixelData + encodeOffset, &decodeImageData[0], width, height, ATITCDecodeFlag::ATC_EXPLICIT_ALPHA);
break;
case CC_GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
atitc_decode(pixelData + encodeOffset, &decodeImageData[0], width, height, ATITCDecodeFlag::ATC_INTERPOLATED_ALPHA);
break;
default:
break;
}
_mipmaps[i].address = (unsigned char *)_data + decodeOffset;
_mipmaps[i].len = (stride * height);
memcpy((void *)_mipmaps[i].address, (void *)&decodeImageData[0], _mipmaps[i].len);
decodeOffset += stride * height;
}
encodeOffset += (size + 4);
width >>= 1;
height >>= 1;
}
/* end load the mipmaps */
return true;
}
bool Image::initWithPVRData(const unsigned char * data, ssize_t dataLen)
{
return initWithPVRv2Data(data, dataLen) || initWithPVRv3Data(data, dataLen);
}
bool Image::initWithWebpData(const unsigned char * data, ssize_t dataLen)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
CCLOG("WEBP image format not supported on WinRT or WP8");
return false;
#else
WEBPModule *webpModule = static_cast<WEBPModule*>(ModuleManager::getModule("webp"));
if (webpModule)
{
DataFromModule dataFromWEBPInit;
bool result = webpModule->initWithWEBPData(data, dataLen, dataFromWEBPInit);
_width = dataFromWEBPInit.width;
_height = dataFromWEBPInit.height;
_renderFormat = dataFromWEBPInit.renderFormat;
_dataLen = dataFromWEBPInit.dataLength;
_data = dataFromWEBPInit.data;
return result;
}
else
{
CCLOG("webp module is not enabled");
return false;
}
#endif
}
bool Image::initWithRawData(const unsigned char * data, ssize_t dataLen, int width, int height, int bitsPerComponent, bool preMulti)
{
bool bRet = false;
do
{
CC_BREAK_IF(0 == width || 0 == height);
_height = height;
_width = width;
_hasPremultipliedAlpha = preMulti;
_renderFormat = Texture2D::PixelFormat::RGBA8888;
// only RGBA8888 supported
int bytesPerComponent = 4;
_dataLen = height * width * bytesPerComponent;
_data = static_cast<unsigned char*>(malloc(_dataLen * sizeof(unsigned char)));
CC_BREAK_IF(! _data);
memcpy(_data, data, _dataLen);
bRet = true;
} while (0);
return bRet;
}
#if (CC_TARGET_PLATFORM != CC_PLATFORM_IOS)
bool Image::saveToFile(const std::string& filename, bool bIsToRGB)
{
//only support for Texture2D::PixelFormat::RGB888 or Texture2D::PixelFormat::RGBA8888 uncompressed data
if (isCompressed() || (_renderFormat != Texture2D::PixelFormat::RGB888 && _renderFormat != Texture2D::PixelFormat::RGBA8888))
{
CCLOG("cocos2d: Image: saveToFile is only support for Texture2D::PixelFormat::RGB888 or Texture2D::PixelFormat::RGBA8888 uncompressed data for now");
return false;
}
bool bRet = false;
do
{
CC_BREAK_IF(filename.size() <= 4);
std::string strLowerCasePath(filename);
for (unsigned int i = 0; i < strLowerCasePath.length(); ++i)
{
strLowerCasePath[i] = tolower(filename[i]);
}
if (std::string::npos != strLowerCasePath.find(".png"))
{
CC_BREAK_IF(!saveImageToPNG(filename, bIsToRGB));
}
else if (std::string::npos != strLowerCasePath.find(".jpg"))
{
CC_BREAK_IF(!saveImageToJPG(filename));
}
else
{
break;
}
bRet = true;
} while (0);
return bRet;
}
#endif
bool Image::saveImageToPNG(const std::string& filePath, bool isToRGB)
{
bool bRet = false;
do
{
FILE *fp;
png_structp png_ptr;
png_infop info_ptr;
png_colorp palette;
png_bytep *row_pointers;
fp = fopen(filePath.c_str(), "wb");
CC_BREAK_IF(nullptr == fp);
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
if (nullptr == png_ptr)
{
fclose(fp);
break;
}
info_ptr = png_create_info_struct(png_ptr);
if (nullptr == info_ptr)
{
fclose(fp);
png_destroy_write_struct(&png_ptr, nullptr);
break;
}
#if (CC_TARGET_PLATFORM != CC_PLATFORM_BADA && CC_TARGET_PLATFORM != CC_PLATFORM_NACL)
if (setjmp(png_jmpbuf(png_ptr)))
{
fclose(fp);
png_destroy_write_struct(&png_ptr, &info_ptr);
break;
}
#endif
png_init_io(png_ptr, fp);
if (!isToRGB && hasAlpha())
{
png_set_IHDR(png_ptr, info_ptr, _width, _height, 8, PNG_COLOR_TYPE_RGB_ALPHA,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
}
else
{
png_set_IHDR(png_ptr, info_ptr, _width, _height, 8, PNG_COLOR_TYPE_RGB,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
}
palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof (png_color));
png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
png_write_info(png_ptr, info_ptr);
png_set_packing(png_ptr);
row_pointers = (png_bytep *)malloc(_height * sizeof(png_bytep));
if(row_pointers == nullptr)
{
fclose(fp);
png_destroy_write_struct(&png_ptr, &info_ptr);
break;
}
if (!hasAlpha())
{
for (int i = 0; i < (int)_height; i++)
{
row_pointers[i] = (png_bytep)_data + i * _width * 3;
}
png_write_image(png_ptr, row_pointers);
free(row_pointers);
row_pointers = nullptr;
}
else
{
if (isToRGB)
{
unsigned char *pTempData = static_cast<unsigned char*>(malloc(_width * _height * 3 * sizeof(unsigned char)));
if (nullptr == pTempData)
{
fclose(fp);
png_destroy_write_struct(&png_ptr, &info_ptr);
free(row_pointers);
row_pointers = nullptr;
break;
}
for (int i = 0; i < _height; ++i)
{
for (int j = 0; j < _width; ++j)
{
pTempData[(i * _width + j) * 3] = _data[(i * _width + j) * 4];
pTempData[(i * _width + j) * 3 + 1] = _data[(i * _width + j) * 4 + 1];
pTempData[(i * _width + j) * 3 + 2] = _data[(i * _width + j) * 4 + 2];
}
}
for (int i = 0; i < (int)_height; i++)
{
row_pointers[i] = (png_bytep)pTempData + i * _width * 3;
}
png_write_image(png_ptr, row_pointers);
free(row_pointers);
row_pointers = nullptr;
if (pTempData != nullptr)
{
free(pTempData);
}
}
else
{
for (int i = 0; i < (int)_height; i++)
{
row_pointers[i] = (png_bytep)_data + i * _width * 4;
}
png_write_image(png_ptr, row_pointers);
free(row_pointers);
row_pointers = nullptr;
}
}
png_write_end(png_ptr, info_ptr);
png_free(png_ptr, palette);
palette = nullptr;
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(fp);
bRet = true;
} while (0);
return bRet;
}
bool Image::saveImageToJPG(const std::string& filePath)
{
JPEGModule *jpegModule = static_cast<JPEGModule*>(ModuleManager::getModule("jpeg"));
if (jpegModule)
{
return jpegModule->saveImage(filePath, this);
}
else
{
CCLOG("jpeg module is not enabled");
return false;
}
}
void Image::premultipliedAlpha()
{
CCASSERT(_renderFormat == Texture2D::PixelFormat::RGBA8888, "The pixel format should be RGBA8888!");
unsigned int* fourBytes = (unsigned int*)_data;
for(int i = 0; i < _width * _height; i++)
{
unsigned char* p = _data + i * 4;
fourBytes[i] = CC_RGB_PREMULTIPLY_ALPHA(p[0], p[1], p[2], p[3]);
}
_hasPremultipliedAlpha = true;
}
void Image::setPVRImagesHavePremultipliedAlpha(bool haveAlphaPremultiplied)
{
_PVRHaveAlphaPremultiplied = haveAlphaPremultiplied;
}
NS_CC_END
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