如上所述，我使用objcopy在Eclipse Helios for Windows上使用MinGW加载SDL_Image图像。
我正在使用命令：objcopy --input-target binary --output-target pei-i386 --binary-architecture i386 Lilothyn.jpg Lilothyn.o
这导致文件：
Lilothyn.o: file format pei-i386
Lilothyn.o
architecture: i386, flags 0x00000030:
HAS_SYMS, HAS_LOCALS
start address 0x00000000
Characteristics 0x305
relocations stripped
line numbers stripped
32 bit words
debugging information removed
Time/Date Thu Jan 01 00:00:00 1970
Magic 0000
MajorLinkerVersion 0
MinorLinkerVersion 0
SizeOfCode 00000000
SizeOfInitializedData 00000000
SizeOfUninitializedData 00000000
AddressOfEntryPoint 00000000
BaseOfCode 00000000
BaseOfData 00000000
ImageBase 00000000
SectionAlignment 00000000
FileAlignment 00000000
MajorOSystemVersion 0
MinorOSystemVersion 0
MajorImageVersion 0
MinorImageVersion 0
MajorSubsystemVersion 0
MinorSubsystemVersion 0
Win32Version 00000000
SizeOfImage 00000000
SizeOfHeaders 00000000
CheckSum 00000000
Subsystem 00000000 (unspecified)
DllCharacteristics 00000000
SizeOfStackReserve 00000000
SizeOfStackCommit 00000000
SizeOfHeapReserve 00000000
SizeOfHeapCommit 00000000
LoaderFlags 00000000
NumberOfRvaAndSizes 00000000
The Data Directory
Entry 0 00000000 00000000 Export Directory [.edata (or where ever we found it)]
Entry 1 00000000 00000000 Import Directory [parts of .idata]
Entry 2 00000000 00000000 Resource Directory [.rsrc]
Entry 3 00000000 00000000 Exception Directory [.pdata]
Entry 4 00000000 00000000 Security Directory
Entry 5 00000000 00000000 Base Relocation Directory [.reloc]
Entry 6 00000000 00000000 Debug Directory
Entry 7 00000000 00000000 Description Directory
Entry 8 00000000 00000000 Special Directory
Entry 9 00000000 00000000 Thread Storage Directory [.tls]
Entry a 00000000 00000000 Load Configuration Directory
Entry b 00000000 00000000 Bound Import Directory
Entry c 00000000 00000000 Import Address Table Directory
Entry d 00000000 00000000 Delay Import Directory
Entry e 00000000 00000000 CLR Runtime Header
Entry f 00000000 00000000 Reserved
Sections:
Idx Name Size VMA LMA File off Algn
0 .data 000024fb 00000000 00000000 000000c0 2**0
CONTENTS, ALLOC, LOAD, DATA
SYMBOL TABLE:
[ 0](sec 1)(fl 0x00)(ty 0)(scl 2) (nx 0) 0x00000000 _binary_Lilothyn_jpg_start
[ 1](sec 1)(fl 0x00)(ty 0)(scl 2) (nx 0) 0x000024fb _binary_Lilothyn_jpg_end
[ 2](sec -1)(fl 0x00)(ty 0)(scl 2) (nx 0) 0x000024fb _binary_Lilothyn_jpg_size
......和另一个：
Tommy.o: file format pei-i386
Tommy.o
architecture: i386, flags 0x00000030:
HAS_SYMS, HAS_LOCALS
start address 0x00000000
Characteristics 0x305
relocations stripped
line numbers stripped
32 bit words
debugging information removed
Time/Date Thu Jan 01 00:00:00 1970
Magic 0000
MajorLinkerVersion 0
MinorLinkerVersion 0
SizeOfCode 00000000
SizeOfInitializedData 00000000
SizeOfUninitializedData 00000000
AddressOfEntryPoint 00000000
BaseOfCode 00000000
BaseOfData 00000000
ImageBase 00000000
SectionAlignment 00000000
FileAlignment 00000000
MajorOSystemVersion 0
MinorOSystemVersion 0
MajorImageVersion 0
MinorImageVersion 0
MajorSubsystemVersion 0
MinorSubsystemVersion 0
Win32Version 00000000
SizeOfImage 00000000
SizeOfHeaders 00000000
CheckSum 00000000
Subsystem 00000000 (unspecified)
DllCharacteristics 00000000
SizeOfStackReserve 00000000
SizeOfStackCommit 00000000
SizeOfHeapReserve 00000000
SizeOfHeapCommit 00000000
LoaderFlags 00000000
NumberOfRvaAndSizes 00000000
The Data Directory
Entry 0 00000000 00000000 Export Directory [.edata (or where ever we found it)]
Entry 1 00000000 00000000 Import Directory [parts of .idata]
Entry 2 00000000 00000000 Resource Directory [.rsrc]
Entry 3 00000000 00000000 Exception Directory [.pdata]
Entry 4 00000000 00000000 Security Directory
Entry 5 00000000 00000000 Base Relocation Directory [.reloc]
Entry 6 00000000 00000000 Debug Directory
Entry 7 00000000 00000000 Description Directory
Entry 8 00000000 00000000 Special Directory
Entry 9 00000000 00000000 Thread Storage Directory [.tls]
Entry a 00000000 00000000 Load Configuration Directory
Entry b 00000000 00000000 Bound Import Directory
Entry c 00000000 00000000 Import Address Table Directory
Entry d 00000000 00000000 Delay Import Directory
Entry e 00000000 00000000 CLR Runtime Header
Entry f 00000000 00000000 Reserved
Sections:
Idx Name Size VMA LMA File off Algn
0 .data 000834fe 00000000 00000000 000000c0 2**0
CONTENTS, ALLOC, LOAD, DATA
SYMBOL TABLE:
[ 0](sec 1)(fl 0x00)(ty 0)(scl 2) (nx 0) 0x00000000 _binary_Tommy_jpg_start
[ 1](sec 1)(fl 0x00)(ty 0)(scl 2) (nx 0) 0x000834fe _binary_Tommy_jpg_end
[ 2](sec -1)(fl 0x00)(ty 0)(scl 2) (nx 0) 0x000834fe _binary_Tommy_jpg_size
问题是最后一个文件（Tommy.o）正确加载，而第一个文件（Lilothyn.o）没有。你可以看到两者看似相似。
我的代码非常广泛，所以我只发布相关部分。
Source.cpp：
int displayFillThread(SDL_Renderer *renderer, SDL_Window *window, bool *_end) throw()
{
std::cout << "Thread initializing..." << std::endl;
SDL_Texture *texture = getTextureFromStream(&binary_Lilothyn_jpg_start, binary_Lilothyn_jpg_size, window, renderer);
if (texture == NULL)
{
std::cout << "Thread: Failed to load image - " << SDL_GetError() << std::endl;
return 1;
}
std::cout << "Thread initialized!" << std::endl;
for(int i= 10; !*_end && i < 400; i+= 100)
for(int j= 10; !*_end && j < 400; j+= 100)
{
SDL_Delay(100);
AddTextureToRederer(renderer, texture, i, j, 100, 100);
SDL_RenderPresent(renderer);
}
return 0;
}
SDL_Texture *getTextureFromStream(char binary[], unsigned int binary_size, SDL_Window *window, SDL_Renderer *renderer) throw()
{
std::cout << "Starting getTextureFromJPEGStream!" << std::endl;
// char* st = loadFileObject(binary_start, binary_end);
SDL_RWops *rw = SDL_RWFromConstMem(binary, binary_size);
std::cout << "rw loaded!" << std::endl;
SDL_Surface *tmpSurf = IMG_Load_RW(rw, 0);
//SDL_Surface *tmpSurf = SDL_CreateRGBSurfaceFrom(Lilothyn_jpg, 123, 102, 24, 96, 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff);
if (tmpSurf != NULL)
{
SDL_Surface *surf = SDL_ConvertSurfaceFormat(tmpSurf, SDL_GetWindowPixelFormat(window), 0);
if (surf != NULL)
{
SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, surf);
SDL_FreeSurface(surf);
std::cout << "tmpSurf loaded!" << std::endl;
return texture;
}//*/
// SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, tmpSurf);
SDL_FreeSurface(tmpSurf);
std::cout << "surf load failed!" << std::endl;
return NULL;
}
std::cout << "tmpSurf load failed!" << std::endl;
return NULL;
}
int main(int argc, char** argv)
{
if (SDL_Init(SDL_INIT_EVERYTHING) < 0)
{
std::cout << "SDL init Error: " << SDL_GetError() << std::endl;
exit(1);
}
SDL_Window *window = SDL_CreateWindow("SDL_Test", 0, 0, _SCREEN_WIDTH_, _SCREEN_HEIGHT_, SDL_WINDOW_OPENGL | SDL_RENDERER_ACCELERATED); // SDL_WINDOW_FULLSCREEN |
if (window == NULL)
{
std::cout << "Window init Error: " << SDL_GetError() << std::endl;
exit(1);
}
SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
if (renderer == NULL)
{
SDL_ShowSimpleMessageBox(0, "Renderer init error", SDL_GetError(), window);
}
//SDL_Texture *texture = getTextureFromJPEGStream(binary_Tommy_jpg_start, binary_Tommy_jpg_end, binary_Tommy_jpg_size, window, renderer);
SDL_Texture *texture = getTextureFromStream(&binary_Tommy_jpg_start, binary_Tommy_jpg_size, window, renderer);
//getTextureFromImage("Resources/Tommy.jpg", window, renderer);
if (texture == NULL)
{
SDL_ShowSimpleMessageBox(0, "Background Texture init error", SDL_GetError(), window);
return 1;
}
SDL_RenderCopy(renderer, texture, NULL, NULL);
//AddTextureToRederer(renderer, FTex, 10, 10, 100, 100);
SDL_RenderPresent(renderer);
SDL_Event event;
bool _end = false;
std::cout << "Starting Thread!" << std::endl;
std::thread thread1;
try
{
thread1 = std::thread(displayFillThread, renderer, window, &_end);
std::cout << "Thread loaded!" << std::endl;
}
catch(std::exception& e)
{
std::cout << "Thread load failed: " << e.what() << std::endl;
return 1;
}
std::cout << "main while starting!" << std::endl;
while(!_end)
{
//...
Source.h：
#ifndef SOURCE_H_
#define SOURCE_H_
static int _SCREEN_WIDTH_ = 1024;
static int _SCREEN_HEIGHT_ = 800;
extern char binary_Tommy_jpg_start;
extern unsigned int binary_Tommy_jpg_size;
extern char binary_Lilothyn_jpg_start;
extern unsigned int binary_Lilothyn_jpg_size;
int displayFillThread(SDL_Renderer *renderer, SDL_Window *window, bool *_end) throw();
SDL_Texture *getTextureFromStream(char binary[], unsigned int binary_size, SDL_Window *window, SDL_Renderer *renderer) throw();
//...
输出：
Starting getTextureFromJPEGStream!
rw loaded!
tmpSurf loaded!
Starting Thread!
Thread loaded!
Thread initializing...
main while starting!
请注意，它没有写第二个＆＃34; getTextureFromJPEGStream！＆＃34;它似乎也没有抛出异常。 它编译没有任何问题，是否有可能Lilothyn.o文件被创建损坏？ （我已经多次重建了它）和/或链接器可能没有正确链接？ 执行时，程序在加载第一张图像后停止响应，同时尝试加载第二张图像。 谢谢你的回复。
答案 0 :(得分：0)
我现在已经解决了这个问题，问题是.o文件中使用的类型。 新代码如下。
Source.h：
extern uint8_t binary_Lilothyn_jpg_start[];
extern uint8_t binary_Lilothyn_jpg_size[];
Source.cpp
SDL_Texture *getTextureFromStream(uint8_t binary[], uint8_t binary_size[], SDL_Window *window, SDL_Renderer *renderer) throw()
{
size_t converted_size = (size_t)((void *)binary_size);
SDL_Surface *tmpSurf = IMG_Load_RW(SDL_RWFromConstMem(binary, converted_size), 0);
if (tmpSurf != NULL)
{
//...
感谢所有观众，我希望这会有所帮助！