{"id":38,"date":"2021-11-24T09:45:47","date_gmt":"2021-11-24T01:45:47","guid":{"rendered":"http:\/\/www.doogi.cn\/?p=38"},"modified":"2022-11-09T11:46:24","modified_gmt":"2022-11-09T03:46:24","slug":"%e8%b0%83%e8%8a%82rgb%e9%a2%9c%e8%89%b2%e7%9a%84%e4%ba%ae%e5%ba%a6","status":"publish","type":"post","link":"http:\/\/www.doogi.cn\/?p=38","title":{"rendered":"\u8c03\u8282RGB\u989c\u8272\u7684\u4eae\u5ea6"},"content":{"rendered":"\n<p>\u5148\u8bf4\u4e00\u4e0b\u95ee\u9898\uff0c\u56fe\u50cf\u7ecf\u8fc7H.264\u7f16\u7801\u540e\uff0c\u6309\u94ae\u4e0a\u7684\u6587\u5b57\u4e0e\u80cc\u666f\u7cca\u505a\u4e00\u56e2\uff0c\u65e0\u6cd5\u8fa8\u8ba4\u3002\u5b8c\u5168\u770b\u4e0d\u6e05\u6309\u94ae\u4e0a\u7684\u6587\u5b57\u3002<\/p>\n\n\n\n<p>\u5206\u6790\u539f\u56e0\uff0c\u6309\u94ae\u4e0a\u7684\u6587\u5b57\u7684\u989c\u8272\u4e0e\u80cc\u666f\u989c\u8272\u592a\u8fc7\u63a5\u8fd1\uff0c\u5bfc\u81f4\u7f16\u7801\u540e\u7cca\u505a\u4e00\u56e2\u3002\u66f4\u6362\u6587\u5b57\u989c\u8272\u540e\uff0c\u95ee\u9898\u89e3\u51b3\u3002\u4f46\u5ba2\u6237\u8981\u6c42\uff0c\u4e0d\u80fd\u6539\u53d8\u6587\u5b57\u7684\u989c\u8272\u3002\u4e8e\u662f\uff0c\u8fdb\u4e00\u6b65\u5206\u6790\uff0c\u5bfc\u81f4\u7cca\u6210\u4e00\u56e2\u7684\u6839\u672c\u539f\u56e0\u5e76\u4e0d\u662f\u989c\u8272\u7684RGB\u503c\u63a5\u8fd1\uff0c\u800c\u662f\u4e24\u79cd\u8272\u7684\u4eae\u5ea6\u503c\u63a5\u8fd1\u3002\u56e0\u4e3a\u539f\u59cb\u5728RGB\u56fe\u50cf\u5728\u751f\u6210h.264\u65f6\uff0c\u4e2d\u95f4\u8fc7\u7a0b\u9700\u8981\u5148\u8f6c\u6362\u6210YUV\u6570\u636e\uff0c\u5f53\u4e24\u79cd\u76f8\u90bb\u8272\u7684\u4eae\u5ea6\u503c\u76f8\u8fd1\u65f6\uff0c\u5c31\u5bb9\u6613\u5bfc\u81f4\u7cca\u3002<\/p>\n\n\n\n<p>\u65e2\u7136\u5982\u6b64\uff0c\u89e3\u51b3\u65b9\u6848\u5c31\u662f\u62c9\u5927\u76f8\u90bb\u4e24\u8272\u7684\u4eae\u5ea6\u503c\u5dee\u5373\u53ef\u3002\u5148\u628a\u6587\u5b57\u989c\u8272\u7684RGB\u503c\u5f55\u5165\u5230\u753b\u56fe\u7a0b\u5e8f\u7684\u7f16\u8f91\u989c\u8272\u4e2d\uff0c\u67e5\u770b\u5176\u8f6c\u6362\u540e\u7684\u4eae\u5ea6\u503c\uff0c\u8c03\u9ad8\u4eae\u5ea6\u503c\u751f\u6210\u65b0\u7684RGB\u503c\u3002\u4e4b\u540e\u901a\u8fc7\u4fee\u6539\u4ee3\u7801\uff0c\u4ece\u539f\u59cbRGB\u6570\u636e\u4e2d\u62ff\u5230\u6587\u5b57\u7684RGB\u6570\u636e\uff0c\u505a\u5bf9\u5e94\u4fee\u6539\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u5728\u6b64\u8fc7\u7a0b\u4e2d\uff0c\u8fd0\u7528\u5230\u7684\u77e5\u8bc6\u5305\u62ecH.264\u7f16\u7801\u539f\u7406\u3001RGB\u6570\u636e\u683c\u5f0f\u3001YUV\u6570\u636e\u683c\u5f0f\u3001\u989c\u8272\u8f6c\u6362\u76f8\u5173\u77e5\u8bc6\u7b49\u3002<\/p>\n\n\n\n<p>\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre lang=\"c\" line=\"1\">\nvoid rgb2rgba(unsigned char* rgb, unsigned char* rgba, int w, int h)\n{\n\tint index = 0;\n\twhile (index < w * h * 3)\n\t{\n\t\t*rgba++ = *rgb++;\n\t\tindex++;\n\t\tif (index % 3 == 0) \n\t\t{\n\t\t\tif (*(rgba - 3) == 231 &#038;&#038; 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