参考:
1.http://blog.csdn.net/leixiaohua1020/article/details/25430425
2.http://blog.csdn.net/leixiaohua1020/article/details/42078645
操作系统版本信息为
$ cat /proc/version
Linux version 3.2.0-29-generic-pae (buildd@roseapple) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC 2012
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.5 LTS
Release: 12.04
Codename: precise
$ uname -a
Linux ubuntu 3.2.0-29-generic-pae #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC 2012 i686 i686 i386 GNU/Linux
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
/*
* Simplest X264 Encoder
*
* Lei Xiaohua
* [email protected]
* Communication University of China / Digital TV Technology
* http://blog.csdn.net/leixiaohua1020
*
* This software encode YUV data to H.264 bitstream.
* It's the simplest encoder example based on libx264.
*
* modify:openswc
*
* build:
* gcc simplest_x264_encoder.cpp -g -o sx264encoder -lx264
*
*/
#include
#include
#include "stdint.h"
//Linux...
#ifdef __cplusplus
extern "C"
{
#endif
#include
#ifdef __cplusplus
};
#endif
int main(int argc, char** argv)
{
int ret;
int y_size;
int i,j;
//FILE* fp_src = fopen("cuc_ieschool_640x360_yuv444p.yuv", "rb");
FILE* fp_src = fopen("cuc_ieschool_640x360_yuv420p.yuv", "rb");
FILE* fp_dst = fopen("cuc_ieschool.h264", "wb");
//Encode 50 frame
//if set 0, encode all frame
int frame_num=50;
int csp=X264_CSP_I420;
int width=640,height=360;
int iNal = 0;
x264_nal_t* pNals = NULL;
x264_t* pHandle = NULL;
x264_picture_t* pPic_in = (x264_picture_t*)malloc(sizeof(x264_picture_t));
x264_picture_t* pPic_out = (x264_picture_t*)malloc(sizeof(x264_picture_t));
x264_param_t* pParam = (x264_param_t*)malloc(sizeof(x264_param_t));
//Check
if(fp_src==NULL||fp_dst==NULL){
printf("Error open files.\n");
return -1;
}
x264_param_default(pParam);
pParam->i_width = width;
pParam->i_height = height;
/*
//Param
pParam->i_log_level = X264_LOG_DEBUG;
pParam->i_threads = X264_SYNC_LOOKAHEAD_AUTO;
pParam->i_frame_total = 0;
pParam->i_keyint_max = 10;
pParam->i_bframe = 5;
pParam->b_open_gop = 0;
pParam->i_bframe_pyramid = 0;
pParam->rc.i_qp_constant=0;
pParam->rc.i_qp_max=0;
pParam->rc.i_qp_min=0;
pParam->i_bframe_adaptive = X264_B_ADAPT_TRELLIS;
pParam->i_fps_den = 1;
pParam->i_fps_num = 25;
pParam->i_timebase_den = pParam->i_fps_num;
pParam->i_timebase_num = pParam->i_fps_den;
*/
pParam->i_csp=csp;
x264_param_apply_profile(pParam, x264_profile_names[5]);
pHandle = x264_encoder_open(pParam);
x264_picture_init(pPic_out);
x264_picture_alloc(pPic_in, csp, pParam->i_width, pParam->i_height);
//ret = x264_encoder_headers(pHandle, &pNals, &iNal);
y_size = pParam->i_width * pParam->i_height;
//detect frame number
if(frame_num==0){
fseek(fp_src,0,SEEK_END);
switch(csp){
case X264_CSP_I444:frame_num=ftell(fp_src)/(y_size*3);break;
case X264_CSP_I420:frame_num=ftell(fp_src)/(y_size*3/2);break;
default:printf("Colorspace Not Support.\n");return -1;
}
fseek(fp_src,0,SEEK_SET);
}
//Loop to Encode
for( i=0;iimg.plane[0],y_size,1,fp_src); //Y
fread(pPic_in->img.plane[1],y_size,1,fp_src); //U
fread(pPic_in->img.plane[2],y_size,1,fp_src); //V
break;}
case X264_CSP_I420:{
fread(pPic_in->img.plane[0],y_size,1,fp_src); //Y
fread(pPic_in->img.plane[1],y_size/4,1,fp_src); //U
fread(pPic_in->img.plane[2],y_size/4,1,fp_src); //V
break;}
default:{
printf("Colorspace Not Support.\n");
return -1;}
}
pPic_in->i_pts = i;
ret = x264_encoder_encode(pHandle, &pNals, &iNal, pPic_in, pPic_out);
if (ret< 0){
printf("Error.\n");
return -1;
}
printf("Succeed encode frame: %5d\n",i);
for ( j = 0; j < iNal; ++j){
fwrite(pNals[j].p_payload, 1, pNals[j].i_payload, fp_dst);
}
}
i=0;
//flush encoder
while(1){
ret = x264_encoder_encode(pHandle, &pNals, &iNal, NULL, pPic_out);
if(ret==0){
break;
}
printf("Flush 1 frame.\n");
for (j = 0; j < iNal; ++j){
fwrite(pNals[j].p_payload, 1, pNals[j].i_payload, fp_dst);
}
i++;
}
x264_picture_clean(pPic_in);
x264_encoder_close(pHandle);
pHandle = NULL;
free(pPic_in);
free(pPic_out);
free(pParam);
fclose(fp_src);
fclose(fp_dst);
return 0;
}