本例程中首先你得有一个yuv422交叉  yuyv的数据 尺寸为640x480，然后转换为rgb565，可以通过yuvplayer进行查看。

#include "fastcv.h"

include "stdio.h"

include <stdio.h>

include <stdlib.h>

include <string.h>

include <assert.h>

include <sys/select.h>

include <fcntl.h>   //low_level i/o

include <unistd.h>

include <errno.h>

include <malloc.h>

include <sys/stat.h>

include <sys/types.h>

include <sys/time.h>

include <sys/mman.h>

include <sys/ioctl.h>

include "mybmp.h"

ifdef __cplusplus

extern "C" {

endif / __cplusplus /

int yuvgetfromfrmae(unsigned char frame)

{

int index_y, index_uv, index_v,num;

int ii;

unsigned char ybuf[10241024];

unsigned char chrombuf[10241024];

unsigned char outimg[640480];

index_y = 0;

index_uv = 0;

index_v = 0;

num = (640 480 ) 2 - 4  ;

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

{

ybuf[index_y++] = frame[ii];

chrombuf[index_uv++]= frame[ii + 1];

ybuf[index_y++]= frame[ii + 2];

chrombuf[index_uv++] = frame[ii + 3];

}

fcvColorYCbCr422PseudoPlanarToRGB565u8 (ybuf,chrombuf,640,480,0,0,outimg,0);

int file_fd;

int write_size;

//struct v4l2_frmsizeenum frame_size;

//struct v4l2_fmtdesc image_fmt;

if ((file_fd = open("outimg.img",O_CREAT | O_RDWR | O_APPEND,777)) == -1)

{

printf("create a picture file error!\n");

}

write_size=write(file_fd,outimg,sizeof(outimg));

printf("write_size = %d\n",write_size);

// Rgb565ConvertBmp((char)outimg,640,480, "test.bmp");



close(file_fd);

}

int main(){



char sVersion[32];



unsigned char ybuf = (unsigned char )malloc(1024600);

fcvGetVersion(sVersion, 32);

printf("FastCV version %s\n", sVersion);

FILE fpyuv = fopen("640x480_yuyv422.yuv", "rb");

    if(fpyuv==NULL){

   printf("Error open files.\n");

   return -1;

         }

int size=fread(ybuf, 1, (6001024), fpyuv);

printf("read %d \n",size);

yuvgetfromfrmae(ybuf);

fclose(fpyuv);

free(ybuf);

}

ifdef  __cplusplus

}

endif

src下有源码，inc有头文件，usr/lib下libfastcv.a 使用静态库

Makefile如下
##### 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 += -lfastcv
LDFLAGS += -L./lib
LDFLAGS += -ldl
LDFLAGS += -lz -lm 

C_SRC=
CXX_SRC=
CXX_SRC +=src/mybmp.cpp
CXX_SRC +=src/getver.cpp
OBJ=
DEP=

#LDFLAGS+= -lcamera
OBJ_CAM_SRV = src/getver.o
TARGETS    += getver
$(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

虽然生成的图有问题，但是验证fastcvapi可用