声明 x264_param_t 结构体变量:
x264_param_t params;
x264_param_default_preset(¶ms, "ultrafast", "zerolatency");//优化编码延迟?
变量参数编码前赋值:
params.i_csp = (csp == ) ? X264_CSP_NV12 : csp;//编码比特流的CSP,仅支持i420,色彩空间设置
#ifdef SQUARE_AND_ROTATE
params.i_width = w;
params.i_height = h;
#else
params.i_width = width;
params.i_height = height;
#endif
params.vui.i_sar_width = ;
params.vui.i_sar_height = ; //设置长宽比 params.i_fps_num = fpsnum;//帧率分子
params.i_fps_den = fpsden;//帧率分母 params.i_timebase_num = ;
params.i_timebase_den = ;//ms params.i_keyint_max = fpsnum/fpsden;
params.i_keyint_min = fpsnum/fpsden;//X264_KEYINT_MIN_AUTO params.b_repeat_headers = ;//
params.b_annexb = ; params.b_deblocking_filter = ;
params.rc.f_rf_constant = ;
params.rc.i_bitrate = bitrate;
初始化编码器:
enc = x264_encoder_open(¶ms);
获取整个流的pps和SPS??:
int s = x264_encoder_headers(enc, &nals, &nal_count);
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x264编码:
初始化图片信息:
x264_picture_t picin, picout;
x264_picture_init(&picin);
对图片信息参数设定:
picin.i_pts = ts;
picin.i_type = X264_TYPE_AUTO;
picin.i_qpplus1 = ;
picin.img.i_csp = (csp == ) ? X264_CSP_NV12 : csp;//special hack for android
。。。。。。。
。。。。。。。
。。。。。
对帧进行x264编码:
ret = x264_encoder_encode(enc, &nals, &nnal, &picin, &picout);
备注:总结一下就是:
(1)初始化并设定x264_param_t
(2)初始化并设定 x264_picture_t
(3)x264编码
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参考:
X264多线程分析
http://blog.sina.com.cn/s/blog_4ae178ba01013yix.html
x264的编码示例
http://blog.csdn.net/xyyangkun/article/details/7255372/
http://www.cnblogs.com/chuncn/archive/2011/02/25/1459805.html