On 01/20/2019 12:15 PM, Dafna Hirschfeld wrote:
> Add function capture_setup that implements the
> capture setup sequence.
>
> Signed-off-by: Dafna Hirschfeld <daf...@gmail.com>
> ---
> utils/v4l2-ctl/v4l2-ctl-streaming.cpp | 58 +++++++++++++++++++++++----
> 1 file changed, 50 insertions(+), 8 deletions(-)
>
> diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> index fc204304..cd20dec7 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> @@ -1836,6 +1836,48 @@ enum stream_type {
> OUT,
> };
>
> +static int capture_setup(cv4l_fd &fd, cv4l_queue &in)
> +{
> + struct v4l2_fmtdesc fmt_desc;
> + cv4l_fmt fmt;
> +
> + if (fd.streamoff(in.g_type())) {
> + fprintf(stderr, "%s: fd.streamoff error\n", __func__);
> + return -1;
> + }
> + get_cap_compose_rect(fd);
> +
> + /* release any buffer allocated */
> + if (in.reqbufs(&fd)) {
> + fprintf(stderr, "%s: in.reqbufs 0 error\n", __func__);
> + return -1;
> + }
> +
> + if (fd.enum_fmt(fmt_desc, true, 0, in.g_type())) {
> + fprintf(stderr, "%s: fd.enum_fmt error\n", __func__);
> + return -1;
> + }
> +
> + fd.g_fmt(fmt, in.g_type());
> + fmt.s_pixelformat(fmt_desc.pixelformat);
This isn't what I would expect. First try to keep the current pixelformat,
and only if that doesn't work do you pick a new format from the available
formats.
In fact, I don't think you need to do anything here at all since the driver
will update the format if needed on a resolution change.
Regards,
Hans
> + fd.s_fmt(fmt, in.g_type());
> +
> + if (in.reqbufs(&fd, reqbufs_count_cap)) {
> + fprintf(stderr, "%s: in.reqbufs %u error\n", __func__,
> + reqbufs_count_cap);
> + return -1;
> + }
> + if (in.obtain_bufs(&fd) || in.queue_all(&fd)) {
> + fprintf(stderr, "%s: in.obtain_bufs error\n", __func__);
> + return -1;
> + }
> + if (fd.streamon(in.g_type())) {
> + fprintf(stderr, "%s: fd.streamon error\n", __func__);
> + return -1;
> + }
> + return 0;
> +}
> +
> static void streaming_set_m2m(cv4l_fd &fd)
> {
> int fd_flags = fcntl(fd.g_fd(), F_GETFL);
> @@ -1900,21 +1942,21 @@ static void streaming_set_m2m(cv4l_fd &fd)
> }
> }
>
> - if (in.reqbufs(&fd, reqbufs_count_cap) ||
> - out.reqbufs(&fd, reqbufs_count_out))
> + if (out.reqbufs(&fd, reqbufs_count_out))
> goto done;
>
> - if (in.obtain_bufs(&fd) ||
> - in.queue_all(&fd) ||
> - do_setup_out_buffers(fd, out, file[OUT], true))
> + if (do_setup_out_buffers(fd, out, file[OUT], true))
> goto done;
>
> - fps_ts[CAP].determine_field(fd.g_fd(), in.g_type());
> - fps_ts[OUT].determine_field(fd.g_fd(), out.g_type());
> + if (fd.streamon(out.g_type()))
> + goto done;
>
> - if (fd.streamon(in.g_type()) || fd.streamon(out.g_type()))
> + if (capture_setup(fd, in))
> goto done;
>
> + fps_ts[CAP].determine_field(fd.g_fd(), in.g_type());
> + fps_ts[OUT].determine_field(fd.g_fd(), out.g_type());
> +
> while (stream_sleep == 0)
> sleep(100);
>
>
