{"id":896,"date":"2023-02-22T13:58:27","date_gmt":"2023-02-22T05:58:27","guid":{"rendered":"http:\/\/www.huangrongzhen.ink\/?p=896"},"modified":"2023-03-04T19:50:50","modified_gmt":"2023-03-04T11:50:50","slug":"%e5%8d%95%e7%89%87%e6%9c%ba-gui-%e8%ae%be%e8%ae%a1%ef%bc%88%e4%b9%9d%ef%bc%89-%e4%b8%ba-png-%e6%98%be%e7%a4%ba%e5%88%86%e9%85%8d%e5%8a%a8%e6%80%81%e5%86%85%e5%ad%98","status":"publish","type":"post","link":"https:\/\/www.huangrongzhen.ink\/?p=896","title":{"rendered":"\u5355\u7247\u673a GUI \u8bbe\u8ba1\uff08\u4e5d\uff09- \u4e3a PNG \u663e\u793a\u5206\u914d\u52a8\u6001\u5185\u5b58"},"content":{"rendered":"

\u57fa\u4e8e GD32F303ZET6 \u82f9\u679c\u6d3e\u5f00\u53d1\u677f <\/p><\/div>\n\n\n

<\/span>\u7b80\u4ecb<\/span><\/h2>\n\n\n\n

\u7ec8\u7aef\u63a7\u4ef6\u90a3\u4e00\u7ae0\u5f15\u5165\u81ea\u5b9a\u4e49\u7684\u52a8\u6001\u5185\u5b58\u7ba1\u7406\u7ec4\u4ef6\u65f6\uff0c\u5fd8\u8bb0\u914d\u7f6e PNG \u9a71\u52a8\u7684\u52a8\u6001\u5185\u5b58\u4e86\uff0c\u6700\u8fd1\u624d\u53d1\u73b0\u7684\uff0c\u5c31\u633a\u70e6\u3002\u8fd9\u5bfc\u81f4\u4e86 PNG \u9a71\u52a8\u4f7f\u7528\u7684\u52a8\u6001\u5185\u5b58\u7ba1\u7406\u65b9\u6848\u4e00\u76f4\u90fd\u662f C \u8bed\u8a00\u9ed8\u8ba4\u7684\uff0c\u5373 malloc \u3001realloc \u548c free \u51fd\u6570\u3002\u8fd9\u51e0\u4e2a\u51fd\u6570\u4f7f\u7528\u7684\u5806\u533a\u5728\u542f\u52a8\u6587\u4ef6\u4e2d\u5b9a\u4e49\u3002\u5728\u7ec8\u7aef\u63a7\u4ef6\u4e4b\u524d\uff0c\u542f\u52a8\u6587\u4ef6\u4e2d\u7684\u5806\u533a\u5f00\u7684\u6bd4\u8f83\u5927\uff0cmalloc \u51fd\u6570\u80fd\u591f\u6210\u529f\u7533\u8bf7\u5230\u6bd4\u8f83\u5927\u7684\u3001\u4e14\u8fde\u7eed\u7684\u52a8\u6001\u5185\u5b58\u3002\u53ef\u662f\u5230\u540e\u8fb9\u9010\u6e10\u53d1\u73b0\u8fd9\u4e2a\u5806\u533a\u5f00\u7684\u5b9e\u5728\u662f\u592a\u5927\u4e86\uff0c\u5f88\u5bb9\u6613\u5bfc\u81f4\u5185\u90e8 SRAM \u4e0d\u591f\u7528\uff0c\u591a\u5b9a\u4e49\u51e0\u4e2a\u63a7\u4ef6\u5185\u5b58\u5c31\u6ca1\u4e86\u3002\u4e8e\u662f\u5c31\u5f15\u5165\u4e86\u81ea\u5b9a\u4e49\u7684\u5185\u5b58\u7ba1\u7406\u7ec4\u4ef6\uff0c\u5e76\u5c06\u542f\u52a8\u6587\u4ef6\u4e2d\u7684\u5806\u533a\u5b9a\u4e49\u7684\u5f88\u5c0f\u3002\u8fd9\u5c31\u5bfc\u81f4\u4e86 PNG \u6a21\u5757\u89e3\u7801\u65f6\uff0c\u901a\u8fc7 malloc \u51fd\u6570\u65e0\u6cd5\u7533\u8bf7\u5230\u8db3\u591f\u591a\u7684\u52a8\u6001\u5185\u5b58\uff0c\u5bfc\u81f4\u89e3\u7801\u5931\u8d25\u3002<\/p>\n\n\n\n

\u672c\u7ae0\u4e2d\u5c31\u662f\u4e3a\u4e86\u7ed9 PNG \u9a71\u52a8\u914d\u7f6e\u52a8\u6001\u5185\u5b58\u5206\u914d\uff0c\u987a\u4fbf\u4e86\u89e3\u4e00\u4e0b LodePNG \u5982\u4f55\u914d\u7f6e\u5404\u4e2a\u529f\u80fd\u3002<\/p>\n\n\n\n

<\/span>\u914d\u7f6e\u5b8f\u5b9a\u4e49<\/span><\/h2>\n\n\n\n

LodePNG \u901a\u8fc7\u5b8f\u5b9a\u4e49\u914d\u7f6e\u5404\u9879\u529f\u80fd\uff0c\u52a8\u6001\u5185\u5b58\u914d\u7f6e\u76f8\u5173\u7684\u5b8f\u5b9a\u4e49\u5982\u4e0b\u6240\u793a\u3002LodePNG \u6bcf\u4e2a\u914d\u7f6e\u5b8f\u90fd\u4f1a\u6709\u8be6\u7ec6\u7684\u8bf4\u660e\uff0c\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\u7684\u610f\u601d\u662f\uff1a\u5982\u679c\u7528\u6237\u672a\u5b9a\u4e49 LODEPNG_NO_COMPILE_ALLOCATORS \u5b8f\uff0c\u90a3\u4e48 LodePNG \u5c06\u4f7f\u7528 C \u8bed\u8a00\u9ed8\u8ba4\u7684\u52a8\u6001\u5185\u5b58\u5206\u914d\u65b9\u6848\uff0c\u5373 free\u3001malloc \u548c realloc\uff1b\u5982\u679c\u7528\u6237\u5b9a\u4e49\u4e86\u8be5\u5b8f\uff0c\u90a3\u4e48\u7528\u6237\u5c31\u9700\u8981\u5b9e\u73b0 lodepng_free\u3001lodepng_malloc \u548c lodepng_realloc \u4e09\u4e2a\u51fd\u6570\uff0c\u6765\u4e3a LodePNG \u91ca\u653e\u3001\u7533\u8bf7\u548c\u91cd\u65b0\u7533\u8bf7\u52a8\u6001\u5185\u5b58\u3002<\/p>\n\n\n\n

\/*Compile the default allocators (C's free, malloc and realloc). If you disable this,\nyou can define the functions lodepng_free, lodepng_malloc and lodepng_realloc in your\nsource files with custom allocators.*\/\n#ifndef LODEPNG_NO_COMPILE_ALLOCATORS\n\/*pass -DLODEPNG_NO_COMPILE_ALLOCATORS to the compiler to disable the built-in ones,\nor comment out LODEPNG_COMPILE_ALLOCATORS below*\/\n#define LODEPNG_COMPILE_ALLOCATORS\n#endif<\/code><\/pre>\n\n\n\n
\u7efc\u4e0a\u53ef\u77e5\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5728\u4e0a\u8ff0\u6bb5\u4ee3\u7801\u4e4b\u524d\u5b9a\u4e49 LODEPNG_NO_COMPILE_ALLOCATORS \u5b8f\uff0c\u5373\u53ef\u53d6\u6d88 LodePNG \u9ed8\u8ba4\u7684\u52a8\u6001\u5185\u5b58\u65b9\u6848\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n\n\n\n
\/\/\u7981\u6b62\u4f7f\u7528 C \u8bed\u8a00\u81ea\u5e26\u7684\u5185\u5b58\u5206\u914d\u51fd\u6570\n#define LODEPNG_NO_COMPILE_ALLOCATORS<\/code><\/pre>\n\n\n\n
<\/span>LodePNG \u9ed8\u8ba4\u5185\u5b58\u7ba1\u7406\u65b9\u6848\u5206\u6790<\/span><\/h2>\n\n\n\n
\u5728  LodePNG \u6e90\u6587\u4ef6\u4e2d\uff0c\u52a8\u6001\u5185\u5b58\u7684\u7533\u8bf7\u548c\u91ca\u653e\u5982\u4e0b\u6240\u793a\u3002\u4e00\u65e6\u7528\u6237\u5b9a\u4e49\u4e86 LODEPNG_NO_COMPILE_ALLOCATORS \u5b8f\uff0c\u6839\u636e\u4e0a\u8ff0\u7684\u4ee3\u7801\uff0cLODEPNG_COMPILE_ALLOCATORS \u5b8f\u5c06\u53d8\u6210\u672a\u5b9a\u4e49\uff0c\u6240\u4ee5 lodepng_malloc \u3001lodepng_realloc \u548c lodepng_free \u4e09\u4e2a\u51fd\u6570\u5c06\u4f1a\u7531\u5b9a\u4e49\u8f6c\u53d8\u6210\u58f0\u660e\uff0c\u6240\u4ee5\u7528\u6237\u9700\u8981\u5728\u81ea\u884c\u5b9a\u4e49\u8fd9\u4e09\u4e2a\u51fd\u6570\uff0c\u5426\u5219\u7f16\u8bd1\u5668\u4f1a\u62a5\u9519\u3002<\/p>\n\n\n\n
\u6709\u4e9b\u540c\u5b66\u53ef\u80fd\u4f1a\u4e3a\u4e86\u65b9\u4fbf\uff0c\u76f4\u63a5\u4fee\u6539 LodePNG \u6e90\u7801\u4e2d lodepng_malloc \u3001lodepng_realloc \u548c lodepng_free\uff0c\u8fd9\u4e5f\u662f\u53ef\u4ee5\u7684\uff0c\u4f46\u662f\u4e3a\u4e86\u65b9\u4fbf\u79fb\u690d\u5230\u5176\u5b83\u5e73\u53f0\uff0c\u4fdd\u8bc1\u6e90\u7801\u7684\u539f\u6c41\u539f\u5473\uff0c\u5728\u8fd9\u91cc\u8fd8\u662f\u63a8\u8350\u81ea\u5df1\u5b9e\u73b0\u8fd9\u4e09\u4e2a\u51fd\u6570\u3002<\/p>\n\n\n\n
#ifdef LODEPNG_COMPILE_ALLOCATORS\nstatic void* lodepng_malloc(size_t size) {\n#ifdef LODEPNG_MAX_ALLOC\n  if(size > LODEPNG_MAX_ALLOC) return 0;\n#endif\n  return malloc(size);\n}\n\n\/* NOTE: when realloc returns NULL, it leaves the original memory untouched *\/\nstatic void* lodepng_realloc(void* ptr, size_t new_size) {\n#ifdef LODEPNG_MAX_ALLOC\n  if(new_size > LODEPNG_MAX_ALLOC) return 0;\n#endif\n  return realloc(ptr, new_size);\n}\n\nstatic void lodepng_free(void* ptr) {\n  free(ptr);\n}\n#else \/*LODEPNG_COMPILE_ALLOCATORS*\/\n\/* TODO: support giving additional void* payload to the custom allocators *\/\nvoid* lodepng_malloc(size_t size);\nvoid* lodepng_realloc(void* ptr, size_t new_size);\nvoid lodepng_free(void* ptr);\n#endif \/*LODEPNG_COMPILE_ALLOCATORS*\/<\/code><\/pre>\n\n\n\n
<\/span>\u4e3a LodePNG \u5206\u914d\u52a8\u6001\u5185\u5b58<\/span><\/h2>\n\n\n\n
\u5728 lodepng.h \u4e2d\u5b9a\u4e49\u4e86 LODEPNG_NO_COMPILE_ALLOCATORS \u5b8f\u4e4b\u540e\uff0c\u5728 PNG.c \u6216\u5de5\u7a0b\u4e2d\u4efb\u610f\u4e00\u4e2a\u5730\u65b9\u6dfb\u52a0\u5982\u4e0b\u6240\u793a\u4ee3\u7801\u3002\u5728\u8fd9\u91cc\u4eff\u7167\u4e86 LodePNG \u6e90\u7801\u4e2d\u7684\u683c\u5f0f\uff0c\u4f7f\u7528\u4e86\u9884\u7f16\u8bd1\u547d\u4ee4\u6765\u63a7\u5236\u8fd9\u51e0\u4e2a\u51fd\u6570\u662f\u5426\u8981\u88ab\u7f16\u8bd1\u3002<\/p>\n\n\n\n
\/*********************************************************************************************************\n* \u51fd\u6570\u540d\u79f0\uff1a lodepng_malloc\n* \u51fd\u6570\u529f\u80fd\uff1a lodepng \u52a8\u6001\u5185\u5b58\u5206\u914d\u51fd\u6570\n* \u8f93\u5165\u53c2\u6570\uff1a size\uff1a\u9700\u8981\u7533\u8bf7\u7684\u52a8\u6001\u5185\u5b58\u5927\u5c0f\uff08\u5b57\u8282\uff09\n* \u8f93\u51fa\u53c2\u6570\uff1a void\n* \u8fd4 \u56de \u503c\uff1a \u7533\u8bf7\u5230\u7684\u52a8\u6001\u5185\u5b58\u7684\u9996\u5730\u5740\n* \u521b\u5efa\u65e5\u671f\uff1a 2023\u5e7402\u670822\u65e5\n* \u6ce8    \u610f\uff1a\n*********************************************************************************************************\/\n#ifdef LODEPNG_NO_COMPILE_ALLOCATORS\nvoid* lodepng_malloc(size_t size)\n{\n  return MyMalloc(SRAMEX, size);\n}\n#endif\n\n\/*********************************************************************************************************\n* \u51fd\u6570\u540d\u79f0\uff1a lodepng_realloc\n* \u51fd\u6570\u529f\u80fd\uff1a lodepng \u5185\u5b58\u91cd\u65b0\u5206\u914d\u51fd\u6570\n* \u8f93\u5165\u53c2\u6570\uff1a ptr\uff1a\u65e7\u52a8\u6001\u5185\u5b58\u7684\u9996\u5730\u5740\uff0cnew_size\uff1a\u65b0\u52a8\u6001\u5185\u5b58\u7684\u5927\u5c0f\n* \u8f93\u51fa\u53c2\u6570\uff1a void\n* \u8fd4 \u56de \u503c\uff1a \u7533\u8bf7\u5230\u7684\u52a8\u6001\u5185\u5b58\u7684\u9996\u5730\u5740\n* \u521b\u5efa\u65e5\u671f\uff1a 2023\u5e7402\u670822\u65e5\n* \u6ce8    \u610f\uff1a\n*********************************************************************************************************\/\n#ifdef LODEPNG_NO_COMPILE_ALLOCATORS\nvoid* lodepng_realloc(void* ptr, size_t new_size)\n{\n  return MyRealloc(SRAMEX, ptr, new_size);\n}\n#endif\n\n\/*********************************************************************************************************\n* \u51fd\u6570\u540d\u79f0\uff1a DrawPNG\n* \u51fd\u6570\u529f\u80fd\uff1a lodepng \u5185\u5b58\u91ca\u653e\u51fd\u6570\n* \u8f93\u5165\u53c2\u6570\uff1a ptr\uff1a\u52a8\u6001\u5185\u5b58\u9996\u5730\u5740\n* \u8f93\u51fa\u53c2\u6570\uff1a void\n* \u8fd4 \u56de \u503c\uff1a void\n* \u521b\u5efa\u65e5\u671f\uff1a 2023\u5e7402\u670822\u65e5\n* \u6ce8    \u610f\uff1a\n*********************************************************************************************************\/\n#ifdef LODEPNG_NO_COMPILE_ALLOCATORS\nvoid lodepng_free(void* ptr)\n{\n  MyFree(ptr);\n}\n#endif<\/code><\/pre>\n\n\n\n
<\/span>\u4fee\u6539 PNG \u7ed8\u5236\u51fd\u6570<\/span><\/h2>\n\n\n\n
\u73b0\u5728 PNG \u663e\u793a\u6a21\u5757\u4f7f\u7528\u7684\u52a8\u6001\u5185\u5b58\u662f\u7531\u81ea\u5b9a\u4e49\u7684\u5185\u5b58\u7ba1\u7406\u673a\u5236\u63d0\u4f9b\u7684\uff0c\u4e0d\u662f\u7531 C \u8bed\u8a00 malloc \u51fd\u6570\u5206\u914d\u800c\u6765\uff0c\u4e0d\u80fd\u7528 free \u51fd\u6570\u91ca\u653e\uff0c\u6240\u4ee5 PNG \u7ed8\u5236\u51fd\u6570\u4e2d\uff0c\u6700\u540e\u7684\u5185\u5b58\u91ca\u653e\u9700\u8981\u7a0d\u52a0\u4fee\u6539\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n\n\n\n
void DrawPNG(unsigned char* image, unsigned int x, unsigned int y, unsigned int size)\n{  \n  \/\/\u89e3\u7801 PNG \u56fe\u7247\n  ...\n\n  \/\/\u91ca\u653e\u52a8\u6001\u5185\u5b58\n#ifdef LODEPNG_NO_COMPILE_ALLOCATORS\n  MyFree(output);\n#else\n  free(output);\n#endif\n}<\/code><\/pre>\n\n\n\n
<\/span>\u5b9e\u9a8c\u7ed3\u679c<\/span><\/h2>\n\n\n\n
\u5b9e\u9a8c\u7ed3\u679c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n\n\n
\n
\"\"<\/figure><\/div>\n\n\n
<\/span>\u6e90\u7801<\/span><\/h2>\n\n\n\n
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