Android S5PV210 camera驱动测试程序
2012-11-18 14:02
429 查看
分类： Android Samsung
S5PV2102012-07-04 13:47 480人阅读 评论(13) 收藏 举报
最近在调试S5PV210上的camera驱动，因为对Android的samsung camera hal 不太了解，自己写了个测试程序方便调试
因为camera驱动都是遵守V4L2标准，所以测试程序是通用的，在MX51平台也能工作。
[html] view
plaincopy
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <getopt.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <asm/types.h>
#include <linux/videodev2.h>
#include <linux/fb.h>
#define CLEAR(x) memset (&(x), 0, sizeof (x))
int PAL_WIDTH = 720;
int PAL_HEIGHT = 576;
enum {
RGB565,
RGB888,
RGB32,
};
struct buffer {
void *start;
size_t length;
};
static char *dev_name = NULL;
static int fd = -1;
static unsigned int n_buffers = 0;
static int g_width;
static int g_height;
static unsigned g_pixelformat;
static struct fb_var_screeninfo vinfo;
static struct fb_fix_screeninfo finfo;
struct buffer *buffers = NULL;
static int file_index = 1;
static int g_count = 9;
static void errno_exit (const char * s)
{
fprintf (stderr, "%s error %d, %s\n",s, errno, strerror (errno));
exit (EXIT_FAILURE);
}
static int xioctl (int fd,int request,void * arg)
{
int r;
do r = ioctl (fd, request, arg);
while (-1 == r && EINTR == errno);
return r;
}
static void write_yuv(const void *p, int index)
{
int write_fd = 0;
int ret;
int length;
char tmp[20];
sprintf(tmp, "/data/file/yuvfile%d", index);
write_fd = open(tmp, O_RDWR|O_CREAT);
if (write_fd == -1) {
printf("%s: open yuvfile failed, errno(%d)\n", __func__, errno);
}
length = g_width * g_height * 2;
ret = write(write_fd, p, length);
if (ret != length) {
printf("%s: write yuvfile failed, ret(%d), errno(%d)\n", __func__, ret, errno);
}
}
static void process_image(const void *p)
{
if (file_index < g_count) {
write_yuv(p, file_index);
file_index = file_index + 1;
}
}
static int read_frame(void)
{
int ret = 0;
struct timeval timer;
struct v4l2_buffer buf;
CLEAR (buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
if (-1 == xioctl(fd, VIDIOC_DQBUF, &buf)) {
switch (errno) {
case EAGAIN:
printf("VIDIOC_DQBUF return EAGAIN\n");
return 0;
default:
printf("VIDIOC_DQBUF failed, errno(%d):\n", errno, strerror(errno));
ret = -errno;
return ret;
}
}
assert (buf.index < n_buffers);
printf("%s: buf.bytesused(%d), buf.index(%d)\n",
__func__, buf.index);
process_image(buffers[buf.index].start);
if (-1 == xioctl(fd, VIDIOC_QBUF, &buf)) {
printf("VIDIOC_BUF failed, errno(%d)\n", errno);
ret = -errno;
}
gettimeofday(&timer, NULL);
printf("(%d)th capture, tv_sec(%d), tv_usec\n",
file_index, timer.tv_sec, timer.tv_usec);
return ret;
}
static void run(void)
{
int ret;
printf("%s: enter\n", __func__);
while (1) {
fd_set fds;
struct timeval tv;
FD_ZERO (&fds);
FD_SET(fd, &fds);
if (file_index == g_count) {
break;
}
tv.tv_sec = 5;
tv.tv_usec = 0;
ret = select(fd + 1, &fds, NULL, NULL, &tv);
if (-1 == ret) {
if (EINTR == errno) {
printf("errno == EINTR\n");
continue;
}
errno_exit("select");
}
if (0 == ret) {
printf("select timeout\n");
exit(EXIT_FAILURE);
}
if (read_frame())
continue;
sleep(1);
}
printf("%s: end run\n", __func__);
}
static void stop_capturing (void)
{
enum v4l2_buf_type type;
printf("%s: enter\n", __func__);
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl (fd, VIDIOC_STREAMOFF, &type))
errno_exit ("VIDIOC_STREAMOFF");
}
static void start_capturing(void)
{
unsigned int i;
enum v4l2_buf_type type;
printf("%s: enter\n", __func__);
for (i = 0; i < n_buffers; ++i) {
struct v4l2_buffer buf;
CLEAR (buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
if (-1 == xioctl (fd, VIDIOC_QBUF, &buf))
errno_exit ("VIDIOC_QBUF");
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl (fd, VIDIOC_STREAMON, &type))
errno_exit ("VIDIOC_STREAMON");
}
static void uninit_device (void)
{
unsigned int i;
for (i = 0; i < n_buffers; ++i)
if (-1 == munmap(buffers[i].start, buffers[i].length))
errno_exit ("munmap");
free (buffers);
}
static void init_mmap (void)
{
struct v4l2_requestbuffers req;
CLEAR (req);
req.count = 4;
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_MMAP;
if (-1 == xioctl (fd, VIDIOC_REQBUFS, &req)) {
if (EINVAL == errno) {
fprintf (stderr, "%s does not support memory mapping\n", dev_name);
exit (EXIT_FAILURE);
} else {
errno_exit ("VIDIOC_REQBUFS");
}
}
if (req.count < 2) { //if (req.count < 2)
fprintf (stderr, "Insufficient buffer memory on %s\n",dev_name);
exit (EXIT_FAILURE);
}
buffers = calloc(req.count, sizeof(*buffers));
if (!buffers) {
fprintf (stderr, "Out of memory\n");
exit (EXIT_FAILURE);
}
printf("request buffer count(%d)\n", req.count);
for (n_buffers = 0; n_buffers < req.count; ++n_buffers) {
struct v4l2_buffer buf;
CLEAR (buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = n_buffers;
if (-1 == xioctl (fd, VIDIOC_QUERYBUF, &buf))
errno_exit ("VIDIOC_QUERYBUF");
buffers[n_buffers].length = buf.length;
buffers[n_buffers].start = mmap(NULL, buf.length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, buf.m.offset);
printf("buf.start(%p), buf.length(%d)\n", buffers[n_buffers].start, buf.length);
if (MAP_FAILED == buffers[n_buffers].start)
errno_exit ("mmap");
}
}
static void init_device (void)
{
struct v4l2_capability cap;
struct v4l2_cropcap cropcap;
struct v4l2_crop crop;
struct v4l2_format fmt;
if (-1 == xioctl(fd, VIDIOC_QUERYCAP, &cap)) {
printf("%s: VIDIOC_QUERYCAP\n", __func__, errno);
exit (EXIT_FAILURE);
}
printf("support overlay cap.capabilities(0x%x)\n", cap.capabilities);
if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
fprintf (stderr, "%s is no video capture device\n",dev_name);
exit (EXIT_FAILURE);
}
if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
fprintf (stderr, "%s does not support streaming i/o\n",dev_name);
exit (EXIT_FAILURE);
}
CLEAR (cropcap);
cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (0 == xioctl (fd, VIDIOC_CROPCAP, &cropcap)) {
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c = cropcap.defrect;
if (-1 == xioctl(fd, VIDIOC_S_CROP, &crop)) {
printf("VIDIOC_S_CROP failed(%d), %s\n", errno, strerror(errno));
}
}
CLEAR (fmt);
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.width = PAL_WIDTH;
fmt.fmt.pix.height = PAL_HEIGHT;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
fmt.fmt.pix.field = V4L2_FIELD_NONE;
if (-1 == xioctl (fd, VIDIOC_S_FMT, &fmt)) {
errno_exit ("VIDIOC_S_FMT");
}
printf("width(%d), height(%d), pixelformat(0x%x), field(%d)\n",
fmt.fmt.pix.width, fmt.fmt.pix.height, fmt.fmt.pix.pixelformat,
fmt.fmt.pix.field);
g_width = fmt.fmt.pix.width;
g_height = fmt.fmt.pix.height;
init_mmap ();
}
static void close_device(void)
{
close(fd);
}
static void open_device(void)
{
struct stat st;
fd = open(dev_name, O_RDWR| O_NONBLOCK, 0);
if (-1 == fd) {
fprintf (stderr, "Cannot open '%s': %d, %s\n",
dev_name, errno, strerror (errno));
exit (EXIT_FAILURE);
}
}
static void usage (FILE * fp,int argc,char ** argv)
{
fprintf (fp,
"Usage: %s [options]\n\n"
"Options:\n"
"-d | --device name Video device name [/dev/video]\n"
"-h | --help Print this message\n"
"-t | --how long will display in seconds\n"
"",
argv[0]);
}
static const char short_options [] = "d:w:h:f:p:c:";
static const struct option long_options [] = {
{ "device", required_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "time", no_argument, NULL, 't' },
{ 0, 0, 0, 0 }
};
int select_input(int input)
{
int ret;
ret = xioctl(fd, VIDIOC_S_INPUT, &input);
if (ret) {
printf("xioctl VIDIOC_S_INPUT failed errno(%d)\n", errno);
}
return ret;
}
int main (int argc,char ** argv)
{
dev_name = "/dev/video0";
for (;;) {
int index;
int c;
int tmp;
c = getopt_long(argc, argv, short_options, long_options, &index);
if (-1 == c)
break;
switch (c) {
case 0:
break;
case 'd':
dev_name = optarg;
break;
case 'c':
g_count = strtol(optarg, NULL, 10);
break;
case 'p':
tmp = strtol(optarg, NULL, 10);
if (tmp == 0) {
g_pixelformat = V4L2_PIX_FMT_UYVY;
}
else if (tmp == 1) {
g_pixelformat = V4L2_PIX_FMT_YUYV;
}
break;
case 'w':
PAL_WIDTH = strtol(optarg, NULL, 10);
printf("PAL_WIDTH(%d)\n", PAL_WIDTH);
break;
case 'h':
PAL_HEIGHT = strtol(optarg, NULL, 10);
printf("PAL_HEIGHT(%d)\n", PAL_HEIGHT);
break;
default:
usage (stderr, argc, argv);
exit (EXIT_FAILURE);
}
}
open_device();
select_input(0);
init_device();
start_capturing ();
run();
stop_capturing();
uninit_device();
close_device();
return 0;
}
S5PV2102012-07-04 13:47 480人阅读 评论(13) 收藏 举报
最近在调试S5PV210上的camera驱动，因为对Android的samsung camera hal 不太了解，自己写了个测试程序方便调试
因为camera驱动都是遵守V4L2标准，所以测试程序是通用的，在MX51平台也能工作。
[html] view
plaincopy
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <getopt.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <asm/types.h>
#include <linux/videodev2.h>
#include <linux/fb.h>
#define CLEAR(x) memset (&(x), 0, sizeof (x))
int PAL_WIDTH = 720;
int PAL_HEIGHT = 576;
enum {
RGB565,
RGB888,
RGB32,
};
struct buffer {
void *start;
size_t length;
};
static char *dev_name = NULL;
static int fd = -1;
static unsigned int n_buffers = 0;
static int g_width;
static int g_height;
static unsigned g_pixelformat;
static struct fb_var_screeninfo vinfo;
static struct fb_fix_screeninfo finfo;
struct buffer *buffers = NULL;
static int file_index = 1;
static int g_count = 9;
static void errno_exit (const char * s)
{
fprintf (stderr, "%s error %d, %s\n",s, errno, strerror (errno));
exit (EXIT_FAILURE);
}
static int xioctl (int fd,int request,void * arg)
{
int r;
do r = ioctl (fd, request, arg);
while (-1 == r && EINTR == errno);
return r;
}
static void write_yuv(const void *p, int index)
{
int write_fd = 0;
int ret;
int length;
char tmp[20];
sprintf(tmp, "/data/file/yuvfile%d", index);
write_fd = open(tmp, O_RDWR|O_CREAT);
if (write_fd == -1) {
printf("%s: open yuvfile failed, errno(%d)\n", __func__, errno);
}
length = g_width * g_height * 2;
ret = write(write_fd, p, length);
if (ret != length) {
printf("%s: write yuvfile failed, ret(%d), errno(%d)\n", __func__, ret, errno);
}
}
static void process_image(const void *p)
{
if (file_index < g_count) {
write_yuv(p, file_index);
file_index = file_index + 1;
}
}
static int read_frame(void)
{
int ret = 0;
struct timeval timer;
struct v4l2_buffer buf;
CLEAR (buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
if (-1 == xioctl(fd, VIDIOC_DQBUF, &buf)) {
switch (errno) {
case EAGAIN:
printf("VIDIOC_DQBUF return EAGAIN\n");
return 0;
default:
printf("VIDIOC_DQBUF failed, errno(%d):\n", errno, strerror(errno));
ret = -errno;
return ret;
}
}
assert (buf.index < n_buffers);
printf("%s: buf.bytesused(%d), buf.index(%d)\n",
__func__, buf.index);
process_image(buffers[buf.index].start);
if (-1 == xioctl(fd, VIDIOC_QBUF, &buf)) {
printf("VIDIOC_BUF failed, errno(%d)\n", errno);
ret = -errno;
}
gettimeofday(&timer, NULL);
printf("(%d)th capture, tv_sec(%d), tv_usec\n",
file_index, timer.tv_sec, timer.tv_usec);
return ret;
}
static void run(void)
{
int ret;
printf("%s: enter\n", __func__);
while (1) {
fd_set fds;
struct timeval tv;
FD_ZERO (&fds);
FD_SET(fd, &fds);
if (file_index == g_count) {
break;
}
tv.tv_sec = 5;
tv.tv_usec = 0;
ret = select(fd + 1, &fds, NULL, NULL, &tv);
if (-1 == ret) {
if (EINTR == errno) {
printf("errno == EINTR\n");
continue;
}
errno_exit("select");
}
if (0 == ret) {
printf("select timeout\n");
exit(EXIT_FAILURE);
}
if (read_frame())
continue;
sleep(1);
}
printf("%s: end run\n", __func__);
}
static void stop_capturing (void)
{
enum v4l2_buf_type type;
printf("%s: enter\n", __func__);
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl (fd, VIDIOC_STREAMOFF, &type))
errno_exit ("VIDIOC_STREAMOFF");
}
static void start_capturing(void)
{
unsigned int i;
enum v4l2_buf_type type;
printf("%s: enter\n", __func__);
for (i = 0; i < n_buffers; ++i) {
struct v4l2_buffer buf;
CLEAR (buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
if (-1 == xioctl (fd, VIDIOC_QBUF, &buf))
errno_exit ("VIDIOC_QBUF");
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl (fd, VIDIOC_STREAMON, &type))
errno_exit ("VIDIOC_STREAMON");
}
static void uninit_device (void)
{
unsigned int i;
for (i = 0; i < n_buffers; ++i)
if (-1 == munmap(buffers[i].start, buffers[i].length))
errno_exit ("munmap");
free (buffers);
}
static void init_mmap (void)
{
struct v4l2_requestbuffers req;
CLEAR (req);
req.count = 4;
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_MMAP;
if (-1 == xioctl (fd, VIDIOC_REQBUFS, &req)) {
if (EINVAL == errno) {
fprintf (stderr, "%s does not support memory mapping\n", dev_name);
exit (EXIT_FAILURE);
} else {
errno_exit ("VIDIOC_REQBUFS");
}
}
if (req.count < 2) { //if (req.count < 2)
fprintf (stderr, "Insufficient buffer memory on %s\n",dev_name);
exit (EXIT_FAILURE);
}
buffers = calloc(req.count, sizeof(*buffers));
if (!buffers) {
fprintf (stderr, "Out of memory\n");
exit (EXIT_FAILURE);
}
printf("request buffer count(%d)\n", req.count);
for (n_buffers = 0; n_buffers < req.count; ++n_buffers) {
struct v4l2_buffer buf;
CLEAR (buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = n_buffers;
if (-1 == xioctl (fd, VIDIOC_QUERYBUF, &buf))
errno_exit ("VIDIOC_QUERYBUF");
buffers[n_buffers].length = buf.length;
buffers[n_buffers].start = mmap(NULL, buf.length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, buf.m.offset);
printf("buf.start(%p), buf.length(%d)\n", buffers[n_buffers].start, buf.length);
if (MAP_FAILED == buffers[n_buffers].start)
errno_exit ("mmap");
}
}
static void init_device (void)
{
struct v4l2_capability cap;
struct v4l2_cropcap cropcap;
struct v4l2_crop crop;
struct v4l2_format fmt;
if (-1 == xioctl(fd, VIDIOC_QUERYCAP, &cap)) {
printf("%s: VIDIOC_QUERYCAP\n", __func__, errno);
exit (EXIT_FAILURE);
}
printf("support overlay cap.capabilities(0x%x)\n", cap.capabilities);
if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
fprintf (stderr, "%s is no video capture device\n",dev_name);
exit (EXIT_FAILURE);
}
if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
fprintf (stderr, "%s does not support streaming i/o\n",dev_name);
exit (EXIT_FAILURE);
}
CLEAR (cropcap);
cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (0 == xioctl (fd, VIDIOC_CROPCAP, &cropcap)) {
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c = cropcap.defrect;
if (-1 == xioctl(fd, VIDIOC_S_CROP, &crop)) {
printf("VIDIOC_S_CROP failed(%d), %s\n", errno, strerror(errno));
}
}
CLEAR (fmt);
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.width = PAL_WIDTH;
fmt.fmt.pix.height = PAL_HEIGHT;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
fmt.fmt.pix.field = V4L2_FIELD_NONE;
if (-1 == xioctl (fd, VIDIOC_S_FMT, &fmt)) {
errno_exit ("VIDIOC_S_FMT");
}
printf("width(%d), height(%d), pixelformat(0x%x), field(%d)\n",
fmt.fmt.pix.width, fmt.fmt.pix.height, fmt.fmt.pix.pixelformat,
fmt.fmt.pix.field);
g_width = fmt.fmt.pix.width;
g_height = fmt.fmt.pix.height;
init_mmap ();
}
static void close_device(void)
{
close(fd);
}
static void open_device(void)
{
struct stat st;
fd = open(dev_name, O_RDWR| O_NONBLOCK, 0);
if (-1 == fd) {
fprintf (stderr, "Cannot open '%s': %d, %s\n",
dev_name, errno, strerror (errno));
exit (EXIT_FAILURE);
}
}
static void usage (FILE * fp,int argc,char ** argv)
{
fprintf (fp,
"Usage: %s [options]\n\n"
"Options:\n"
"-d | --device name Video device name [/dev/video]\n"
"-h | --help Print this message\n"
"-t | --how long will display in seconds\n"
"",
argv[0]);
}
static const char short_options [] = "d:w:h:f:p:c:";
static const struct option long_options [] = {
{ "device", required_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "time", no_argument, NULL, 't' },
{ 0, 0, 0, 0 }
};
int select_input(int input)
{
int ret;
ret = xioctl(fd, VIDIOC_S_INPUT, &input);
if (ret) {
printf("xioctl VIDIOC_S_INPUT failed errno(%d)\n", errno);
}
return ret;
}
int main (int argc,char ** argv)
{
dev_name = "/dev/video0";
for (;;) {
int index;
int c;
int tmp;
c = getopt_long(argc, argv, short_options, long_options, &index);
if (-1 == c)
break;
switch (c) {
case 0:
break;
case 'd':
dev_name = optarg;
break;
case 'c':
g_count = strtol(optarg, NULL, 10);
break;
case 'p':
tmp = strtol(optarg, NULL, 10);
if (tmp == 0) {
g_pixelformat = V4L2_PIX_FMT_UYVY;
}
else if (tmp == 1) {
g_pixelformat = V4L2_PIX_FMT_YUYV;
}
break;
case 'w':
PAL_WIDTH = strtol(optarg, NULL, 10);
printf("PAL_WIDTH(%d)\n", PAL_WIDTH);
break;
case 'h':
PAL_HEIGHT = strtol(optarg, NULL, 10);
printf("PAL_HEIGHT(%d)\n", PAL_HEIGHT);
break;
default:
usage (stderr, argc, argv);
exit (EXIT_FAILURE);
}
}
open_device();
select_input(0);
init_device();
start_capturing ();
run();
stop_capturing();
uninit_device();
close_device();
return 0;
}
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 
相关文章推荐
- Android S5PV210 camera驱动测试程序
- S5PV210 Android camera驱动测试程序
- Android S5PV210 camera驱动测试程序
- Android S5PV210 camera驱动测试程序
- android从应用到驱动之—camera(1)---程序调用流程
- 编译Android驱动对应的C测试程序出错的解决方法以及正确流程
- android从应用到驱动之—camera(1)---程序调用流程
- S5PV210 camera 驱动分析（android）
- V4L2 camera 驱动 capture测试程序【转】
- android从应用到驱动之—camera(1)---程序调用流程[转]
- (转)android从应用到驱动之—camera(1)---程序调用流程
- android从应用到驱动之—camera(1)---程序调用流程
- android从应用到驱动之—camera(1)---程序调用流程
- android从应用到驱动之—camera(1)---程序调用流程（转）
- 在ok6410 Androdi开发板运行c程序，添加驱动模块，并测试android驱动
- android从应用到驱动之—camera(1)---程序调用流程
- Android S5PV210 camera驱动（tw9912）小结
- android从应用到驱动之—camera(1)---程序调用流程
- android从应用到驱动之—camera(1)---程序调用流程
- S5PV210 camera 驱动分析（android）