uvc camera yuv422 planer格式编码h264测试例程

小v 2019-9-5 4452 0

/*

最简单的基于X264的视频编码器

Simplest X264 Encoder

jiangyu

本程序可以YUV格式的像素数据编码为H.264码流，是最简单的

基于libx264的视频编码器

This software encode YUV data to H.264 bitstream.

It's the simplest encoder example based on libx264.

*/

include <stdio.h>

include <stdlib.h>

include "stdint.h"

if defined ( __cplusplus)

extern "C"

{

include "x264.h"

};

else

include "x264.h"

endif

int width=640;

int height=480;

int csp=X264_CSP_I422;

// nv12 转 yuv 并写入本地

#if 0

void nv12toYuv(uint8_t NV12, uint8_t I420,size_t pixelWidth,size_t pixelHeight,const char resultCString,const char resultCString2){

unsigned char ybuf = (unsigned char )malloc(pixelHeight pixelWidth);

unsigned char ubuf = (unsigned char )malloc((pixelHeight/2) (pixelWidth/2));

unsigned char vbuf = (unsigned char )malloc((pixelHeight/2) (pixelWidth/2));

unsigned char y = ybuf;

unsigned char u = ubuf;

unsigned char v = vbuf;

int len = (int)pixelHeight pixelWidth + pixelHeight pixelWidth / 2;

FILE fpyuv = fopen(resultCString, "wb");

for (int i = 0; i < len; i ++) {

if (i < (pixelWidth pixelHeight)) { //yyyyy

y = NV12;

y++;

}

else{//uvuvuv

if (i % 2 == 0) {//uuuuu

u = NV12;

u ++;

}else{//vvvvv

v = NV12;

v ++;

}

}

NV12 ++;

}

fwrite(ybuf, 1, pixelWidthpixelHeight, fpyuv);

fwrite(ubuf, 1, pixelWidthpixelHeight/4, fpyuv);

fwrite(vbuf, 1, pixelWidth*pixelHeight/4, fpyuv);

fclose(fpyuv);

free(ybuf);

free(ubuf);

free(vbuf);

}

endif

//未用到

int yuv422toyuv420(unsigned char out, const unsigned char in, unsigned int width, unsigned int height)

{

unsigned char y = out;

unsigned char u = out + widthheight;

unsigned char v = out + widthheight + widthheight/4;

unsigned int i,j;

unsigned int base_h;

unsigned int is_y = 1, is_u = 1;

unsigned int y_index = 0, u_index = 0, v_index = 0;

unsigned long yuv422_length = 2 width height;

//序列为YU YV YU YV，一个yuv422帧的长度 width height 2 个字节

//丢弃偶数行 u v

for(i=0; i<yuv422_length; i+=2){

(y+y_index) = (in+i);

y_index++;

}

for(i=0; i<height; i+=2){

base_h = iwidth2;

for(j=base_h+1; j<base_h+width2; j+=2){

if(is_u){

(u+u_index) = (in+j);

u_index++;

is_u = 0;

}

else{

(v+v_index) = *(in+j);

v_index++;

is_u = 1;

}

}

}

return 1;

}

int main(int argc, char* argv)

{

int ret;

int y_size;

int i,j,ii,len;

char tmpbuf = NULL;

FILE fp_src = fopen("./640x480.yuv", "rb");

FILE fp_dst = fopen("output.h264", "wb");

//Encode frame number

//if set 0, encode all frame

int frame_num=0;

int index_y, index_u, index_v;

int num;

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));//编码之前进行填充

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));

tmpbuf = (char )malloc(widthheight2sizeof(char)+1);

if(!tmpbuf)

{

printf("malloc");

}

//Check

if(fp_src==NULL||fp_dst==NULL){

printf("Error open files.\n");

return -1;

}

x264_param_default(pParam); //给参数结构体赋默认值

x264_param_default_preset(pParam, "fast" , "zerolatency" ); //设置preset和tune

char y = pPic_in->img.plane[0];

char u = pPic_in->img.plane[1];

char v = pPic_in->img.plane[2];

//修改部分参数

pParam->i_csp=csp;

pParam->i_width = width; // 宽度

pParam->i_height = height; // 高度

pParam->i_fps_num = 25; // 设置帧率（分子）

pParam->i_fps_den = 1; // 设置帧率时间1s（分母）

pParam->i_threads = X264_SYNC_LOOKAHEAD_AUTO;

pParam->i_keyint_max = 10; //在此间隔设置IDR关键帧

pParam->rc.i_bitrate = 1200; // 设置码率,在ABR(平均码率)模式下才生效，且必须在设置ABR前先设置bitrate

pParam->rc.i_rc_method = X264_RC_ABR; // 码率控制方法，CQP(恒定质量)，CRF(恒定码率,缺省值23)，ABR(平均码率)

/

//Param

pParam->i_log_level = X264_LOG_DEBUG;

pParam->i_frame_total = 0;

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_timebase_den = pParam->i_fps_num;

pParam->i_timebase_num = pParam->i_fps_den;

/

//set profile x264_profile_names[] = { "baseline", "main", "high", "high10", "high422", "high444", 0 };

if(csp == X264_CSP_I420)

x264_param_apply_profile(pParam, "baseline");

else if(csp == X264_CSP_I422)

x264_param_apply_profile(pParam, "high422");

//open encoder

pHandle = x264_encoder_open(pParam);

if(csp == X264_CSP_NV12){

pPic_in->img.i_stride[0] = pParam->i_width;

pPic_in->img.i_stride[1] = pParam->i_width;

pPic_in->img.i_stride[2] = 0;

pPic_in->img.i_csp = X264_CSP_NV12;

pPic_in->img.i_plane = 2;

} else if(csp == X264_CSP_I422)

{

pPic_in->img.i_csp = X264_CSP_I422;

pPic_in->img.i_plane = 3;

}else { // 其他暂认为都是YUV420格式

pPic_in->img.i_stride[0] = pParam->i_width;

pPic_in->img.i_stride[1] = pParam->i_width>>1;

pPic_in->img.i_stride[2] = pParam->i_width>>1;

pPic_in->img.i_csp = X264_CSP_I420;

pPic_in->img.i_plane = 3;

}

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_size3);break;

case X264_CSP_I422:frame_num=ftell(fp_src)/(y_size2);break;

case X264_CSP_I420:frame_num=ftell(fp_src)/(y_size3/2);break;

case X264_CSP_NV12:frame_num=ftell(fp_src)/(y_size3/2);break;

default:printf("Colorspace Not Support.\n");return -1;

}

fseek(fp_src,0,SEEK_SET);

}

printf("franme count :%d \n",frame_num);

//Loop to Encode

for( i=0;i<frame_num;i++){

switch(csp){

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;}

case X264_CSP_NV12:

printf("nv12 enc y\n");

fread(pPic_in->img.plane[0],y_size,1,fp_src); //Y

fread(pPic_in->img.plane[1],y_size/2,1,fp_src); //uv

printf("nv12 enc uv end\n");

break;

case X264_CSP_I422:

printf("i422 enc yuv start\n");

index_y = 0;

index_u = 0;

index_v = 0;

len =fread(tmpbuf,y_size2,1,fp_src);

printf("read len:%d %x %x\n",len,tmpbuf[0],tmpbuf[y_size2]);

num = width height 2 - 4 ;

for(ii=0; ii<num; ii=ii+4)

{

(pPic_in->img.plane[0]+index_y++) = tmpbuf[ii];

(pPic_in->img.plane[1] +index_u++) = tmpbuf[ii + 1];

(pPic_in->img.plane[0] +index_y++) = tmpbuf[ii + 2];

(pPic_in->img.plane[2] +index_v++) = tmpbuf[ii + 3];

}

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);

free(tmpbuf);

fclose(fp_src);

fclose(fp_dst);

return 0;

}

makefile

##### Make sure all is the first target.
all:

CXX ?= g++
CC ?= gcc

CFLAGS += -g -pthread -Wall
CFLAGS += -rdynamic -funwind-tables

CFLAGS += -I${SDKTARGETSYSROOT}/usr/include/linux-headers/usr/include
CFLAGS += -I./inc
CFLAGS += -I./usr/include

CFLAGS += -D__unused="__attribute__((__unused__))"

#LDFLAGS += -L./usr/lib/gpac
LDFLAGS += -lx264 -ldl

LDFLAGS += -L./usr/lib/

C_SRC=
C_SRC+=src/main.c
C_SRC+=src/osp.c
C_SRC+=src/osp_common.c
C_SRC+=src/osp_proc_data.c
C_SRC+=src/osp_syslog.c
C_SRC+=src/osp_timer.c
CXX_SRC=
OBJ=
DEP=

#LDFLAGS+= -lcamera

OBJ_CAM_SRV = src/main.o
TARGETS += camera-rtp-service
$(TARGETS): $(OBJ_CAM_SRV)
TARGET_OBJ += $(OBJ_CAM_SRV)

FILE_LIST := files.txt
COUNT := ./make/count.sh
MK := $(word 1,$(MAKEFILE_LIST))
ME := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))

OBJ=$(CXX_SRC:.cpp=.o) $(C_SRC:.c=.o)
DEP=$(OBJ:.o=.d) $(TARGET_OBJ:.o=.d)

CXXFLAGS += -std=c++11 $(CFLAGS)
#include ./common.mk
.PHONY: all clean distclean

all: $(TARGETS)

clean:
rm -f $(TARGETS) $(FILE_LIST)
find . -name "*.o" -delete
find . -name "*.d" -delete

distclean:
rm -f $(TARGETS) $(FILE_LIST)
find . -name "*.o" -delete
find . -name "*.d" -delete

-include $(DEP)

%.o: %.c $(MK) $(ME)
@[ -f $(COUNT) ] && $(COUNT) $(FILE_LIST) $^ || true
@$(CC) -c $< -MM -MT $@ -MF $(@:.o=.d) $(CFLAGS) $(LIBQCAM_CFLAGS)
$(CC) -c $< $(CFLAGS) -o $@ $(LIBQCAM_CFLAGS)

%.o: %.cpp $(MK) $(ME)
@[ -f $(COUNT) ] && $(COUNT) $(FILE_LIST) $^ || true
@$(CXX) -c $< -MM -MT $@ -MF $(@:.o=.d) $(CXXFLAGS)
$(CXX) -c $< $(CXXFLAGS) -o $@

$(TARGETS): $(OBJ)
$(CXX) -o $@ $^ $(CXXFLAGS) $(LDFLAGS)
@[ -f $(COUNT) -a -n "$(FILES)" ] && $(COUNT) $(FILE_LIST) $(FILES) || true
@[ -f $(COUNT) ] && $(COUNT) $(FILE_LIST) || true