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<p>以下是全部内容，个人见解，谢谢！（序号为函数调用过程），帧间的看的没那么仔细，还在看，以后争取补上！ （<span style="font-family:Times New Roman">1</span><span style="font-family:宋体">） </span><span style="font-family:Times New Roman">x264_param_default( x264_param_t *param ) </span><span style="font-family:宋体">作用： 对编码器进行参数设定 </span><span style="font-family:Times New Roman">cqm:</span><span style="font-family:宋体">量化表相关信息 </span><span style="font-family:Times New Roman">csp</span><span style="font-family:宋体">： 量化表相关信息里的</span><span style="font-family:Times New Roman">memset( param->cqm_4iy, 16, 16 ); memset( param->cqm_4ic, 16, 16 ); memset( param->cqm_4py, 16, 16 ); memset( param->cqm_4pc, 16, 16 ); memset( param->cqm_8iy, 16, 64 ); memset( param->cqm_8py, 16, 64 ); </span><span style="font-family:宋体">（</span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">）</span><span style="font-family:Times New Roman">static int Parse( int argc, char **argv, x264_param_t *param, cli_opt_t *opt ) </span><span style="font-family:宋体">初始化</span></p>
<p>1<span style="font-family:宋体">． </span><span style="font-family:Times New Roman">getopt_long(nargc, nargv, options, long_options, idx) </span><span style="font-family:宋体">得到入口地址的向量与方式的选择 </span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">． </span><span style="font-family:Times New Roman">getopt_internal(nargc, nargv, options) </span><span style="font-family:宋体">解析入口地址向量 （</span><span style="font-family:Times New Roman">3</span><span style="font-family:宋体">） </span><span style="font-family:Times New Roman">static int Encode( x264_param_t *param, cli_opt_t *opt ) /* Create a copy of param */ h->param=param /* VUI */vui</span><span style="font-family:宋体">信息主要包括帧率、图像尺寸等信息 </span><span style="font-family:Times New Roman">/* Init x264_t */ x264_sps_init( h->sps, 0, &h->param ); x264_pps_init( h->pps, 0, &h->param, h->sps); /* Init frames. */ </span><span style="font-family:宋体">初始化并开辟帧空间 </span><span style="font-family:Times New Roman">/* init mb cache */ </span><span style="font-family:宋体">对前一宏块的信息保存，因为是初始化，所以作为第一个宏块的参考，后面会有</span><span style="font-family:Times New Roman">x264_macroblock_cache_load( h, i_mb_x, i_mb_y );</span><span style="font-family:宋体">它是将要编码的宏块的周围的宏块的值读进来</span><span style="font-family:Times New Roman">, </span><span style="font-family:宋体">要想得到当前块的预测值，要先知道上面，左面的预测值 </span><span style="font-family:Times New Roman">/* init cabac adaptive model */ /* init CPU functions */ </span><span style="font-family:宋体">初始化</span><span style="font-family:Times New Roman">cpu</span><span style="font-family:宋体">对各种分块的参数设定 </span><span style="font-family:Times New Roman">/* rate control */ 1</span><span style="font-family:宋体">． </span><span style="font-family:Times New Roman">x264_t *x264_encoder_open ( x264_param_t *param ) </span><span style="font-family:宋体">这个函数是对不正确的参数进行修改</span><span style="font-family:Times New Roman">,</span><span style="font-family:宋体">并对各结构体参数和</span><span style="font-family:Times New Roman">cabac</span><span style="font-family:宋体">编码</span><span style="font-family:Times New Roman">,</span><span style="font-family:宋体">预测等需要的参数进行初始化 </span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">p_read_frame( &pic, opt->hin, i_frame + opt->i_seek, param->i_width, param->i_height ) </span><span style="font-family:宋体">读取一帧，并把这帧设为</span><span style="font-family:Times New Roman">prev 3. i_file += Encode_frame( h, opt->hout, &pic );</span><span style="font-family:宋体">进入核码层 核心编码层的总流程图：（</span><span style="font-family:Times New Roman">x264.c</span></p>
<p>1<span style="font-family:宋体">． </span><span style="font-family:Times New Roman">x264_encoder_encode( h, &nal, &i_nal, pic, &pic_out )</span><span style="font-family:宋体">对帧进行编码 </span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">． </span><span style="font-family:Times New Roman">i_size = x264_nal_encode( data, &i_data, 1, &nal[i] ) </span><span style="font-family:宋体">网络打包编码 </span><span style="font-family:Times New Roman">3</span><span style="font-family:宋体">． </span><span style="font-fa |
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