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drivers/video/video: add NONBLOCK support 

Signed-off-by: jihandong <jihandong@xiaomi.com>
This commit is contained in:
jihandong 2023-02-01 15:23:55 +08:00 committed by Xiang Xiao
parent a20bc77010
commit ae7bc4e300
1 changed files with 11 additions and 3 deletions
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14
drivers/video/video.c
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@ -236,7 +236,8 @@ static int video_reqbufs(FAR struct video_mng_s *vmng,
static int video_qbuf(FAR struct video_mng_s *vmng,
FAR struct v4l2_buffer *buf);
static int video_dqbuf(FAR struct video_mng_s *vmng,
FAR struct v4l2_buffer *buf);
FAR struct v4l2_buffer *buf,
int oflags);
static int video_cancel_dqbuf(FAR struct video_mng_s *vmng,
enum v4l2_buf_type type);
static int video_g_fmt(FAR struct video_mng_s *priv,
@ -1304,7 +1305,8 @@ static int video_qbuf(FAR struct video_mng_s *vmng,
}
static int video_dqbuf(FAR struct video_mng_s *vmng,
FAR struct v4l2_buffer *buf)
FAR struct v4l2_buffer *buf,
int oflags)
{
irqstate_t flags;
FAR video_type_inf_t *type_inf;
@ -1326,6 +1328,11 @@ static int video_dqbuf(FAR struct video_mng_s *vmng,
container = video_framebuff_dq_valid_container(&type_inf->bufinf);
if (container == NULL)
{
if (oflags & O_NONBLOCK)
{
return -EAGAIN;
}
/* Not yet done capture. Wait done */
dqbuf_wait_flg = &type_inf->wait_capture.dqbuf_wait_flg;
@ -3009,7 +3016,8 @@ static int video_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
break;
case VIDIOC_DQBUF:
ret = video_dqbuf(priv, (FAR struct v4l2_buffer *)arg);
ret = video_dqbuf(priv, (FAR struct v4l2_buffer *)arg,
filep->f_oflags);
break;
case VIDIOC_CANCEL_DQBUF: