一、x264 将YUV编码为.h264
1.下载安装x264
./configure --prefix=/usr --enable-shared
make
make install
2.用安装好的x264用命令将YUV编码为.h264
./x264 cuc_ieschool_640x360_yuv420p.yuv --input-res 640x360 --dump-yuv testv/fdec-cucies420p.yuv -o ieschool420p.h264 -v
yuv文件:
https://github.com/leixiaohua1020/simplest_encoder/blob/master/cuc_ieschool_640x360_yuv420p.yuv
https://github.com/leixiaohua1020/simplest_encoder/blob/master/cuc_ieschool_640x360_yuv444p.yuv
3.用C语言代码调用x264接口将YUV编码为.h264
编译命令:
gcc simplest_x264_encoder.cpp -g -o sx264encoder -lx264
代码如下
stdint.h
https://github.com/leixiaohua1020/simplest_encoder/blob/master/simplest_x264_encoder/stdint.h
simplest_x264_encoder.cpp
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/*
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* Simplest X264 Encoder
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*
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* Lei Xiaohua
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* Communication University of China / Digital TV Technology
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* http://blog.csdn.net/leixiaohua1020
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*
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* This software encode YUV data to H.264 bitstream.
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* It's the simplest encoder example based on libx264.
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*
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* modify:openswc
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*
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* build:
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* gcc simplest_x264_encoder.cpp -g -o sx264encoder -lx264
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "stdint.h"
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//Linux...
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include <x264.h>
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#ifdef __cplusplus
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};
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#endif
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int main(int argc, char** argv)
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{
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int ret;
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int y_size;
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int i,j;
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//FILE* fp_src = fopen("cuc_ieschool_640x360_yuv444p.yuv", "rb");
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FILE* fp_src = fopen("cuc_ieschool_640x360_yuv420p.yuv", "rb");
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FILE* fp_dst = fopen("cuc_ieschool.h264", "wb");
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//Encode 50 frame
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//if set 0, encode all frame
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int frame_num=50;
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int csp=X264_CSP_I420;
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int width=640,height=360;
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int iNal = 0;
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x264_nal_t* pNals = NULL;
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x264_t* pHandle = NULL;
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x264_picture_t* pPic_in = (x264_picture_t*)malloc(sizeof(x264_picture_t));
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x264_picture_t* pPic_out = (x264_picture_t*)malloc(sizeof(x264_picture_t));
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x264_param_t* pParam = (x264_param_t*)malloc(sizeof(x264_param_t));
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//Check
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if(fp_src==NULL||fp_dst==NULL){
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printf("Error open files.\n");
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return -1;
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}
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x264_param_default(pParam);
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pParam->i_width = width;
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pParam->i_height = height;
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/*
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//Param
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pParam->i_log_level = X264_LOG_DEBUG;
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pParam->i_threads = X264_SYNC_LOOKAHEAD_AUTO;
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pParam->i_frame_total = 0;
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pParam->i_keyint_max = 10;
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pParam->i_bframe = 5;
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pParam->b_open_gop = 0;
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pParam->i_bframe_pyramid = 0;
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pParam->rc.i_qp_constant=0;
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pParam->rc.i_qp_max=0;
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pParam->rc.i_qp_min=0;
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pParam->i_bframe_adaptive = X264_B_ADAPT_TRELLIS;
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pParam->i_fps_den = 1;
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pParam->i_fps_num = 25;
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pParam->i_timebase_den = pParam->i_fps_num;
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pParam->i_timebase_num = pParam->i_fps_den;
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*/
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pParam->i_csp=csp;
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x264_param_apply_profile(pParam, x264_profile_names[5]);
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pHandle = x264_encoder_open(pParam);
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x264_picture_init(pPic_out);
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x264_picture_alloc(pPic_in, csp, pParam->i_width, pParam->i_height);
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//ret = x264_encoder_headers(pHandle, &pNals, &iNal);
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y_size = pParam->i_width * pParam->i_height;
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//detect frame number
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if(frame_num==0){
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fseek(fp_src,0,SEEK_END);
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switch(csp){
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case X264_CSP_I444:frame_num=ftell(fp_src)/(y_size*3);break;
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case X264_CSP_I420:frame_num=ftell(fp_src)/(y_size*3/2);break;
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default:printf("Colorspace Not Support.\n");return -1;
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}
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fseek(fp_src,0,SEEK_SET);
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}
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//Loop to Encode
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for( i=0;i<frame_num;i++){
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switch(csp){
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case X264_CSP_I444:{
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fread(pPic_in->img.plane[0],y_size,1,fp_src); //Y
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fread(pPic_in->img.plane[1],y_size,1,fp_src); //U
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fread(pPic_in->img.plane[2],y_size,1,fp_src); //V
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break;}
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case X264_CSP_I420:{
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fread(pPic_in->img.plane[0],y_size,1,fp_src); //Y
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fread(pPic_in->img.plane[1],y_size/4,1,fp_src); //U
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fread(pPic_in->img.plane[2],y_size/4,1,fp_src); //V
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break;}
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default:{
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printf("Colorspace Not Support.\n");
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return -1;}
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}
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pPic_in->i_pts = i;
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ret = x264_encoder_encode(pHandle, &pNals, &iNal, pPic_in, pPic_out);
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if (ret< 0){
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printf("Error.\n");
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return -1;
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}
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printf("Succeed encode frame: %5d\n",i);
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for ( j = 0; j < iNal; ++j){
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fwrite(pNals[j].p_payload, 1, pNals[j].i_payload, fp_dst);
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}
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}
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i=0;
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//flush encoder
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while(1){
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ret = x264_encoder_encode(pHandle, &pNals, &iNal, NULL, pPic_out);
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if(ret==0){
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break;
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}
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printf("Flush 1 frame.\n");
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for (j = 0; j < iNal; ++j){
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fwrite(pNals[j].p_payload, 1, pNals[j].i_payload, fp_dst);
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}
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i++;
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}
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x264_picture_clean(pPic_in);
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x264_encoder_close(pHandle);
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pHandle = NULL;
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free(pPic_in);
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free(pPic_out);
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free(pParam);
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fclose(fp_src);
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fclose(fp_dst);
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return 0;
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}