libcmo21/LibCmo/CK2/DataHandlers/CKBitmapHandler.cpp

299 lines
9.2 KiB
C++

#include "CKBitmapHandler.hpp"
#include "stb_image.h"
#include "stb_image_write.h"
#include "stb_image_resize.h"
namespace LibCmo::CK2::DataHandlers {
#pragma region Help Functions
static void RGBAToARGB(CK2::CKDWORD count, const void* _rgba, void* _argb) {
const char* rgba = reinterpret_cast<const char*>(_rgba);
char* argb = reinterpret_cast<char*>(_argb);
// copy RGB
VxMath::VxCopyStructure(
count,
argb + sizeof(uint8_t),
4 * sizeof(uint8_t),
3 * sizeof(uint8_t),
rgba,
4 * sizeof(uint8_t)
);
// copy A
VxMath::VxCopyStructure(
count,
argb,
4 * sizeof(uint8_t),
sizeof(uint8_t),
rgba + (3 * sizeof(uint8_t)),
4 * sizeof(uint8_t)
);
}
static void ARGBToRGBA(CK2::CKDWORD count, const void* _argb, void* _rgba) {
const char* argb = reinterpret_cast<const char*>(_argb);
char* rgba = reinterpret_cast<char*>(_rgba);
// copy RGB
VxMath::VxCopyStructure(
count,
rgba,
4 * sizeof(uint8_t),
3 * sizeof(uint8_t),
argb + sizeof(uint8_t),
4 * sizeof(uint8_t)
);
// copy A
VxMath::VxCopyStructure(
count,
rgba + (3 * sizeof(uint8_t)),
4 * sizeof(uint8_t),
sizeof(uint8_t),
argb,
4 * sizeof(uint8_t)
);
}
static bool StbReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
if (u8filename == nullptr || read_image == nullptr) return false;
FILE* fs = EncodingHelper::U8FOpen(u8filename, "rb");
if (fs == nullptr) return false;
// read data
int x, y, channels_in_file;
stbi_uc* data = stbi_load_from_file(fs, &x, &y, &channels_in_file, 4); // 4 == RGBA8888
std::fclose(fs);
if (data == nullptr) return false;
// create read image
read_image->CreateImage(static_cast<CKDWORD>(x), static_cast<CKDWORD>(y));
// copy data
RGBAToARGB(read_image->GetPixelCount(), data, read_image->GetMutableImage());
// clear data
stbi_image_free(data);
return true;
}
static bool StbReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) {
// same like ReadFile
if (memory == nullptr || read_image == nullptr) return false;
// read data
int x, y, channels_in_file;
stbi_uc* data = stbi_load_from_memory(
reinterpret_cast<const stbi_uc*>(memory),
static_cast<int>(size),
&x, &y, &channels_in_file, 4 // 4 == RGBA8888
);
if (data == nullptr) return false;
// create read image
read_image->CreateImage(static_cast<CKDWORD>(x), static_cast<CKDWORD>(y));
// copy data
RGBAToARGB(read_image->GetPixelCount(), data, read_image->GetMutableImage());
// clear data
stbi_image_free(data);
return true;
}
struct FileSaveContext {
FileSaveContext(FILE* fs) :
m_Fs(fs), m_Counter(0) {}
FILE* m_Fs;
size_t m_Counter;
};
static void FileWriteFunction(void* context, void* data, int size) {
FileSaveContext* ctx = reinterpret_cast<FileSaveContext*>(context);
if (ctx->m_Fs != nullptr) {
std::fwrite(data, sizeof(char), size, ctx->m_Fs);
}
ctx->m_Counter += size;
}
struct MemorySaveContext {
MemorySaveContext(void* mem) :
m_Mem(mem), m_Counter(0) {}
void* m_Mem;
size_t m_Counter;
};
static void MemoryWriteFunction(void* context, void* data, int size) {
MemorySaveContext* ctx = reinterpret_cast<MemorySaveContext*>(context);
if (ctx->m_Mem != nullptr) {
std::memcpy(ctx->m_Mem, data, size);
ctx->m_Mem = reinterpret_cast<char*>(ctx->m_Mem) + size;
}
ctx->m_Counter += size;
}
using SaveOperation = std::function<int(stbi_write_func*, void*, int, int, int, const void*)>;
static bool StbSaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, SaveOperation oper) {
if (u8filename == nullptr || write_image == nullptr) return false;
if (!write_image->IsValid()) return false;
FILE* fs = EncodingHelper::U8FOpen(u8filename, "wb");
if (fs == nullptr) return false;
// allocate buffer and convert data from ARGB to RGBA
CKBYTE* data = new CKBYTE[write_image->GetImageSize()];
ARGBToRGBA(write_image->GetPixelCount(), write_image->GetImage(), data);
// write data
FileSaveContext* ctx = new FileSaveContext(fs);
int ret = oper(
&FileWriteFunction, ctx,
static_cast<int>(write_image->GetWidth()), static_cast<int>(write_image->GetHeight()),
4, data // 4 == RGBA8888
);
// free data
delete ctx;
delete[] data;
std::fclose(fs);
return ret == 0;
}
static CKDWORD StbSaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, SaveOperation oper) {
if (write_image == nullptr) return 0;
if (!write_image->IsValid()) return 0;
// allocate buffer and convert data from ARGB to RGBA
CKBYTE* data = new CKBYTE[write_image->GetImageSize()];
ARGBToRGBA(write_image->GetPixelCount(), write_image->GetImage(), data);
// write data
MemorySaveContext* ctx = new MemorySaveContext(memory);
int ret = oper(
&MemoryWriteFunction, ctx,
static_cast<int>(write_image->GetWidth()), static_cast<int>(write_image->GetHeight()),
4, data // 4 == RGBA8888
);
// free data
CKDWORD expected = static_cast<CKDWORD>(ctx->m_Counter);
delete ctx;
delete[] data;
if (ret == 0) return 0;
else return expected;
}
#pragma endregion
#pragma region CKBitmapBMPHandler
static const CKBitmapProperties g_BMPProperties(CKGUID(0xBCA97223u, 0x48578BCAu), "Bmp");
CKBitmapBMPHandler::CKBitmapBMPHandler() :
CKBitmapHandler() {}
CKBitmapBMPHandler::~CKBitmapBMPHandler() {}
const CKBitmapProperties& CKBitmapBMPHandler::GetBitmapDefaultProperties() {
return g_BMPProperties;
}
bool CKBitmapBMPHandler::ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
return StbReadFile(u8filename, read_image);
}
bool CKBitmapBMPHandler::ReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) {
return StbReadMemory(memory, size, read_image);
}
bool CKBitmapBMPHandler::SaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) {
return StbSaveFile(u8filename, write_image,
[&codec_param](stbi_write_func* func, void* context, int w, int h, int comp, const void* data) -> int {
return stbi_write_bmp_to_func(func, context, w, h, comp, data);
});
}
CKDWORD CKBitmapBMPHandler::SaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) {
return StbSaveMemory(memory, write_image,
[&codec_param](stbi_write_func* func, void* context, int w, int h, int comp, const void* data) -> int {
return stbi_write_bmp_to_func(func, context, w, h, comp, data);
});
}
#pragma endregion
#pragma region CKBitmapTGAHandler
static const CKBitmapProperties g_TGAProperties(CKGUID(0x585C7216u, 0x33302657u), "Tga");
CKBitmapTGAHandler::CKBitmapTGAHandler() :
CKBitmapHandler() {}
CKBitmapTGAHandler::~CKBitmapTGAHandler() {}
const CKBitmapProperties& CKBitmapTGAHandler::GetBitmapDefaultProperties() {
return g_TGAProperties;
}
bool CKBitmapTGAHandler::ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
return StbReadFile(u8filename, read_image);
}
bool CKBitmapTGAHandler::ReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) {
return StbReadMemory(memory, size, read_image);
}
bool CKBitmapTGAHandler::SaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) {
return StbSaveFile(u8filename, write_image,
[&codec_param](stbi_write_func* func, void* context, int w, int h, int comp, const void* data) -> int {
return stbi_write_tga_to_func(func, context, w, h, comp, data);
});
}
CKDWORD CKBitmapTGAHandler::SaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) {
return StbSaveMemory(memory, write_image,
[&codec_param](stbi_write_func* func, void* context, int w, int h, int comp, const void* data) -> int {
return stbi_write_tga_to_func(func, context, w, h, comp, data);
});
}
#pragma endregion
#pragma region General Getter Freer
static CKBitmapHandler* FindHandlerByExt(const CKFileExtension& ext) {
if (ext == g_BMPProperties.m_Ext) return new CKBitmapBMPHandler();
if (ext == g_TGAProperties.m_Ext) return new CKBitmapTGAHandler();
return nullptr;
}
static CKBitmapHandler* FindHandlerByGuid(const CKGUID& guid) {
if (guid == g_BMPProperties.m_ReaderGuid) return new CKBitmapBMPHandler();
if (guid == g_TGAProperties.m_ReaderGuid) return new CKBitmapTGAHandler();
return nullptr;
}
CKBitmapHandler* CKBitmapHandler::GetBitmapHandler(const CKFileExtension& ext, const CKGUID& guid) {
CKBitmapHandler* handler = nullptr;
// check ext first
handler = FindHandlerByExt(ext);
if (handler != nullptr) return handler;
// check guid
handler = FindHandlerByGuid(guid);
if (handler != nullptr) return handler;
return nullptr;
}
std::unique_ptr<CKBitmapHandler, CKBitmapHandlerDeleter> CKBitmapHandler::GetBitmapHandlerWrapper(const CKFileExtension& ext, const CKGUID& guid) {
return std::unique_ptr<CKBitmapHandler, std::function<void(CKBitmapHandler*)>>(GetBitmapHandler(ext, guid));
}
void CKBitmapHandlerDeleter::operator()(CKBitmapHandler* handler) {
CKBitmapHandler::ReleaseBitmapHandler(handler);
}
void CKBitmapHandler::ReleaseBitmapHandler(CKBitmapHandler* handler) {
if (handler != nullptr) delete handler;
}
#pragma endregion
}