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| /**
x264库编码要使用以下库
-lpthread -ldl
要求头文件：stdint.h
ffprobe信息：
Input #0, h264, from 'test.h264':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264 (High), yuv420p, 176x144, 25 fps, 25 tbr, 1200k tbn
, 50 tbc
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h> // for uint8_t in x264.h
#include "x264.h"
int x264_encode(const char* infile, int width, int height, int type, const char* outfile)
{
FILE *fp_src = NULL;
FILE *fp_dst = NULL;
unsigned int luma_size = 0;
unsigned int chroma_size = 0;
int i_nal = 0;
int i_frame = 0;
unsigned int i_frame_size = 0;
int csp = type;//X264_CSP_I420;
x264_nal_t* nal = NULL;
x264_t* handle = NULL;
x264_picture_t* pic_in = NULL;
x264_picture_t* pic_out = NULL;
x264_param_t param;
fp_src = fopen(infile, "rb");
fp_dst = fopen(outfile, "wb");
if(fp_src==NULL || fp_dst==NULL)
{
perror("Error open yuv files:");
return -1;
}
x264_param_default(¶m);
param.i_width = width;
param.i_height = height;
/*
//Param
param.i_log_level = X264_LOG_DEBUG;
param.i_threads = X264_SYNC_LOOKAHEAD_AUTO;
param.i_frame_total = 0;
param.i_keyint_max = 10;
param.i_bframe = 5;
param.b_open_gop = 0;
param.i_bframe_pyramid = 0;
param.rc.i_qp_constant=0;
param.rc.i_qp_max=0;
param.rc.i_qp_min=0;
param.i_bframe_adaptive = X264_B_ADAPT_TRELLIS;
param.i_fps_den = 1;
param.i_fps_num = 25;
param.i_timebase_den = param.i_fps_num;
param.i_timebase_num = param.i_fps_den;
*/
param.i_csp = csp;
param.b_repeat_headers = 1;
param.b_annexb = 1;
// profile: high x264_profile_names定义见x264.h
x264_param_apply_profile(¶m, x264_profile_names[2]);
pic_in = (x264_picture_t*)malloc(sizeof(x264_picture_t));
if (pic_in == NULL)
{
goto out;
}
pic_out = (x264_picture_t*)malloc(sizeof(x264_picture_t));
if (pic_out == NULL)
{
goto out;
}
x264_picture_init(pic_out);
x264_picture_alloc(pic_in, csp, param.i_width, param.i_height);
handle = x264_encoder_open(¶m);
// 计算有多少帧
luma_size = param.i_width * param.i_height;
fseek(fp_src, 0, SEEK_END);
switch (csp)
{
case X264_CSP_I444:
i_frame = ftell(fp_src) / (luma_size*3);
chroma_size = luma_size;
break;
case X264_CSP_I420:
i_frame = ftell(fp_src) / (luma_size*3/2);
chroma_size = luma_size / 4;
break;
default:
printf("Colorspace Not Support.\n");
goto out;
}
fseek(fp_src, 0, SEEK_SET);
printf("framecnt: %d, y: %d u: %d\n", i_frame, luma_size, chroma_size);
// 编码
for (int i = 0; i < i_frame; i++)
{
switch(csp)
{
case X264_CSP_I444:
case X264_CSP_I420:
i_frame_size = fread(pic_in->img.plane[0], 1, luma_size, fp_src);
if (i_frame_size != luma_size)
{
printf("read luma failed %d.\n", i_frame_size);
break;
}
i_frame_size = fread(pic_in->img.plane[1], 1, chroma_size, fp_src);
if (i_frame_size != chroma_size)
{
printf("read chroma1 failed %d.\n", i_frame_size);
break;
}
i_frame_size = fread(pic_in->img.plane[2], 1, chroma_size, fp_src);
if (i_frame_size != chroma_size)
{
printf("read chrome2 failed %d.\n", i_frame_size);
break;
}
break;
default:
printf("Colorspace Not Support.\n");
return -1;
}
pic_in->i_pts = i;
i_frame_size = x264_encoder_encode(handle, &nal, &i_nal, pic_in, pic_out);
printf("encode frame: %5d framesize: %d nal: %d\n", i+1, i_frame_size, i_nal);
if (i_frame_size < 0)
{
printf("Error encode frame: %d.\n", i+1);
goto out;
}
#if 01
else if (i_frame_size)
{
if(!fwrite(nal->p_payload, 1, i_frame_size, fp_dst))
goto out;
}
#endif
// 另一种做法
#if 0
// i_nal有可能为0，有可能多于1
for (int j = 0; j < i_nal; j++)
{
fwrite(nal[j].p_payload, 1, nal[j].i_payload, fp_dst);
}
#endif
}
//flush encoder
while(x264_encoder_delayed_frames(handle))
//while(1)
{
static int cnt = 1;
i_frame_size = x264_encoder_encode(handle, &nal, &i_nal, NULL, pic_out);
printf("flush frame: %d framesize: %d nalsize: %d\n", cnt++, i_frame_size, i_nal);
if(i_frame_size == 0)
{
break;
//goto out;
}
#if 01
else if(i_frame_size)
{
if(!fwrite(nal->p_payload, 1, i_frame_size, fp_dst))
goto out;
}
#endif
// 另一种做法
#if 0
// i_nal有可能为0，有可能多于1
for (int j = 0; j < i_nal; j++)
{
fwrite(nal[j].p_payload, 1, nal[j].i_payload, fp_dst);
}
#endif
}
out:
x264_picture_clean(pic_in);
if (handle)
{
x264_encoder_close(handle);
handle = NULL;
}
if (pic_in)
free(pic_in);
if (pic_out)
free(pic_out);
fclose(fp_src);
fclose(fp_dst);
return 0;
}
|
