int main(int argc, char **argv)
{
int fd_v4l;
quitflag = 0;
pthread_t sigtid;
sigemptyset(&sigset);
sigaddset(&sigset, SIGINT);
pthread_sigmask(SIG_BLOCK, &sigset, NULL);
pthread_create(&sigtid, NULL, (void *)&signal_thread, NULL);
if (process_cmdline(argc, argv) < 0) {
return -1;
}
fd_v4l = v4l_capture_setup();
if (g_mem_type == V4L2_MEMORY_USERPTR)
if (memalloc(g_frame_size, TEST_BUFFER_NUM) < 0) {
close(fd_v4l);
}
v4l_capture_test(fd_v4l);
if (g_mem_type == V4L2_MEMORY_USERPTR)
memfree(g_frame_size, TEST_BUFFER_NUM);
return 0;
}
void* capture_thread(void* arg)
{
void *shm = NULL;
int shmid;
shmid = shmget((key_t)123456, g_display_width*g_display_height*3, 0666|IPC_CREAT);
if(shmid == -1)
{
fprintf(stderr, "shmget failed\n");
return NULL;
}
//将共享内存连接到当前进程的地址空间
shm = shmat(shmid, (void*)0, 0);
if(shm == (void*)-1)
{
fprintf(stderr, "shmat failed\n");
return NULL;
}
printf("Memory attached at %X\n", (int)shm);
shared = (char*)shm;
init();
enum v4l2_buf_type type;
if ((fd_capture_v4l = open(v4l_capture_dev, O_RDWR, 0)) < 0)
{
printf("Unable to open %s\n", v4l_capture_dev);
return NULL;
}
if (v4l_capture_setup() < 0) {
printf("Setup v4l capture failed.\n");
return NULL;
}
mxc_v4l_tvin_test();
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ioctl(fd_capture_v4l, VIDIOC_STREAMOFF, &type);
int i;
for (i = 0; i < g_capture_num_buffers; i++)
{
munmap(capture_buffers[i].start, capture_buffers[i].length);
}
close(fd_capture_v4l);
if(shmdt(shm) == -1)
fprintf(stderr, "shmdt failed\n");
if(shmctl(shmid, IPC_RMID, 0) == -1)
{
fprintf(stderr, "shmctl(IPC_RMID) failed\n");
}
return NULL;
}
int main(int argc, char **argv)
{
char fb_device[100] = "/dev/fb0";
int fd_fb = 0, i;
struct mxcfb_gbl_alpha alpha;
enum v4l2_buf_type type;
if ((fd_capture_v4l = open(v4l_capture_dev, O_RDWR, 0)) < 0)
{
printf("Unable to open %s\n", v4l_capture_dev);
return TFAIL;
}
if ((fd_output_v4l = open(v4l_output_dev, O_RDWR, 0)) < 0)
{
printf("Unable to open %s\n", v4l_output_dev);
return TFAIL;
}
if (v4l_capture_setup() < 0) {
printf("Setup v4l capture failed.\n");
return TFAIL;
}
if (v4l_output_setup() < 0) {
printf("Setup v4l output failed.\n");
close(fd_capture_v4l);
return TFAIL;
}
if ((fd_fb = open(fb_device, O_RDWR )) < 0) {
printf("Unable to open frame buffer\n");
close(fd_capture_v4l);
close(fd_output_v4l);
return TFAIL;
}
/* Overlay setting */
alpha.alpha = 0;
alpha.enable = 1;
if (ioctl(fd_fb, MXCFB_SET_GBL_ALPHA, &alpha) < 0) {
printf("Set global alpha failed\n");
close(fd_fb);
close(fd_capture_v4l);
close(fd_output_v4l);
return TFAIL;
}
mxc_v4l_tvin_test();
type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
ioctl(fd_output_v4l, VIDIOC_STREAMOFF, &type);
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ioctl(fd_capture_v4l, VIDIOC_STREAMOFF, &type);
for (i = 0; i < g_output_num_buffers; i++)
{
munmap(output_buffers[i].start, output_buffers[i].length);
}
for (i = 0; i < g_capture_num_buffers; i++)
{
munmap(capture_buffers[i].start, capture_buffers[i].length);
}
close(fd_capture_v4l);
close(fd_output_v4l);
close(fd_fb);
return 0;
}
int
mxc_v4l_tvin_test(void)
{
struct v4l2_buffer capture_buf;
v4l2_std_id id;
int i, j;
enum v4l2_buf_type type;
if (start_capturing() < 0)
{
printf("start_capturing failed\n");
return TFAIL;
}
for (i = 0; ; i++) {
begin:
if (ioctl(fd_capture_v4l, VIDIOC_G_STD, &id)) {
printf("VIDIOC_G_STD failed.\n");
return TFAIL;
}
if (id == g_current_std)
goto next;
else if (id == V4L2_STD_PAL || id == V4L2_STD_NTSC) {
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ioctl(fd_capture_v4l, VIDIOC_STREAMOFF, &type);
for (j = 0; j < g_capture_num_buffers; j++)
{
munmap(capture_buffers[j].start, capture_buffers[j].length);
}
if (v4l_capture_setup() < 0) {
printf("Setup v4l capture failed.\n");
return TFAIL;
}
if (start_capturing() < 0)
{
printf("start_capturing failed\n");
return TFAIL;
}
i = 0;
printf("TV standard changed\n");
} else {
sleep(1);
/* Try again */
if (ioctl(fd_capture_v4l, VIDIOC_G_STD, &id)) {
printf("VIDIOC_G_STD failed.\n");
return TFAIL;
}
if (id != V4L2_STD_ALL)
goto begin;
printf("Cannot detect TV standard\n");
return 0;
}
next:
waitSem(semSetId,0);//获取一个空间用于存放产品
waitSem(semSetId,2);//占有产品缓冲区
memset(&capture_buf, 0, sizeof(capture_buf));
capture_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
capture_buf.memory = V4L2_MEMORY_MMAP;
if (ioctl(fd_capture_v4l, VIDIOC_DQBUF, &capture_buf) < 0) {
printf("VIDIOC_DQBUF failed.\n");
return TFAIL;
}
//printf("copy yuyv\n");
memcpy(shared,capture_buffers[capture_buf.index].start,g_in_width*g_in_height*2);
//printf("after copy yuyv\n");
sigSem(semSetId,2);//释放产品缓冲区
sigSem(semSetId,1);//告知消费者有产品了
if (ioctl(fd_capture_v4l, VIDIOC_QBUF, &capture_buf) < 0) {
printf("VIDIOC_QBUF failed\n");
return TFAIL;
}
}
return 0;
}
