Hi Dafna,
One simple comment:
On 1/30/19 2:00 PM, Dafna Hirschfeld wrote:
> add a function vidcap_get_and_update_fmt to set
> the format from cmd params. Use it in capture_setup.
>
> Signed-off-by: Dafna Hirschfeld <daf...@gmail.com>
> ---
> utils/v4l2-ctl/v4l2-ctl-streaming.cpp | 13 +++
> utils/v4l2-ctl/v4l2-ctl-vidcap.cpp | 140 ++++++++++++++------------
> utils/v4l2-ctl/v4l2-ctl.h | 1 +
> 3 files changed, 91 insertions(+), 63 deletions(-)
>
> diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> index d6c3f6a9..2f66e052 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> @@ -1902,17 +1902,30 @@ static int capture_setup(cv4l_fd &fd, cv4l_queue &in,
> cv4l_fd *exp_fd)
> return -1;
> }
>
> + if (options[OptSetVideoFormat]) {
> + cv4l_fmt fmt;
> +
> + if (vidcap_get_and_update_fmt(fd, fmt)) {
> + fprintf(stderr, "%s: vidcap_get_and_update_fmt error\n",
> + __func__);
> + return -1;
> + }
> + 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 (exp_fd && in.export_bufs(exp_fd, exp_fd->g_type()))
> 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;
> diff --git a/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
> b/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
> index dc17a868..df1203a9 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
> @@ -155,72 +155,12 @@ void vidcap_cmd(int ch, char *optarg)
>
> void vidcap_set(cv4l_fd &_fd)
> {
> - int fd = _fd.g_fd();
> - int ret;
> -
> if (options[OptSetVideoFormat] || options[OptTryVideoFormat]) {
> + int fd = _fd.g_fd();
> + int ret;
> struct v4l2_format vfmt;
>
> - memset(&vfmt, 0, sizeof(vfmt));
> - vfmt.fmt.pix.priv = priv_magic;
> - vfmt.type = vidcap_buftype;
> -
> - if (doioctl(fd, VIDIOC_G_FMT, &vfmt) == 0) {
> - if (is_multiplanar) {
> - if (set_fmts & FmtWidth)
> - vfmt.fmt.pix_mp.width = width;
> - if (set_fmts & FmtHeight)
> - vfmt.fmt.pix_mp.height = height;
> - if (set_fmts & FmtPixelFormat) {
> - vfmt.fmt.pix_mp.pixelformat = pixfmt;
> - if (vfmt.fmt.pix_mp.pixelformat < 256) {
> - vfmt.fmt.pix_mp.pixelformat =
> - find_pixel_format(fd,
> vfmt.fmt.pix_mp.pixelformat,
> - false,
> true);
> - }
> - }
> - if (set_fmts & FmtField)
> - vfmt.fmt.pix_mp.field = field;
> - if (set_fmts & FmtFlags)
> - vfmt.fmt.pix_mp.flags = flags;
> - if (set_fmts & FmtBytesPerLine) {
> - for (unsigned i = 0; i <
> VIDEO_MAX_PLANES; i++)
> -
> vfmt.fmt.pix_mp.plane_fmt[i].bytesperline =
> - bytesperline[i];
> - } else {
> - /* G_FMT might return bytesperline
> values > width,
> - * reset them to 0 to force the driver
> to update them
> - * to the closest value for the new
> width. */
> - for (unsigned i = 0; i <
> vfmt.fmt.pix_mp.num_planes; i++)
> -
> vfmt.fmt.pix_mp.plane_fmt[i].bytesperline = 0;
> - }
> - } else {
> - if (set_fmts & FmtWidth)
> - vfmt.fmt.pix.width = width;
> - if (set_fmts & FmtHeight)
> - vfmt.fmt.pix.height = height;
> - if (set_fmts & FmtPixelFormat) {
> - vfmt.fmt.pix.pixelformat = pixfmt;
> - if (vfmt.fmt.pix.pixelformat < 256) {
> - vfmt.fmt.pix.pixelformat =
> - find_pixel_format(fd,
> vfmt.fmt.pix.pixelformat,
> - false,
> false);
> - }
> - }
> - if (set_fmts & FmtField)
> - vfmt.fmt.pix.field = field;
> - if (set_fmts & FmtFlags)
> - vfmt.fmt.pix.flags = flags;
> - if (set_fmts & FmtBytesPerLine) {
> - vfmt.fmt.pix.bytesperline =
> bytesperline[0];
> - } else {
> - /* G_FMT might return a bytesperline
> value > width,
> - * reset this to 0 to force the driver
> to update it
> - * to the closest value for the new
> width. */
> - vfmt.fmt.pix.bytesperline = 0;
> - }
> - }
> -
> + if (vidcap_get_and_update_fmt(_fd, vfmt) == 0) {
> if (options[OptSetVideoFormat])
> ret = doioctl(fd, VIDIOC_S_FMT, &vfmt);
> else
> @@ -231,6 +171,80 @@ void vidcap_set(cv4l_fd &_fd)
> }
> }
>
> +int vidcap_get_and_update_fmt(cv4l_fd &_fd, struct v4l2_format &vfmt)
> +{
> + int fd = _fd.g_fd();
> + int ret;
> +
> + memset(&vfmt, 0, sizeof(vfmt));
> + vfmt.fmt.pix.priv = priv_magic;
> + vfmt.type = vidcap_buftype;
> +
> + ret = doioctl(fd, VIDIOC_G_FMT, &vfmt);
> + if (ret)
> + return ret;
> +
> + if (is_multiplanar) {
> + if (set_fmts & FmtWidth)
> + vfmt.fmt.pix_mp.width = width;
> + if (set_fmts & FmtHeight)
> + vfmt.fmt.pix_mp.height = height;
> + if (set_fmts & FmtPixelFormat) {
> + vfmt.fmt.pix_mp.pixelformat = pixfmt;
> + if (vfmt.fmt.pix_mp.pixelformat < 256) {
> + vfmt.fmt.pix_mp.pixelformat =
> + find_pixel_format(fd,
> vfmt.fmt.pix_mp.pixelformat,
> + false, true);
> + }
> + }
> + if (set_fmts & FmtField)
> + vfmt.fmt.pix_mp.field = field;
> + if (set_fmts & FmtFlags)
> + vfmt.fmt.pix_mp.flags = flags;
> + if (set_fmts & FmtBytesPerLine) {
> + for (unsigned i = 0; i < VIDEO_MAX_PLANES; i++)
> + vfmt.fmt.pix_mp.plane_fmt[i].bytesperline =
> + bytesperline[i];
> + } else {
> + /*
> + * G_FMT might return bytesperline values > width,
> + * reset them to 0 to force the driver to update them
> + * to the closest value for the new width.
> + */
> + for (unsigned i = 0; i < vfmt.fmt.pix_mp.num_planes;
> i++)
> + vfmt.fmt.pix_mp.plane_fmt[i].bytesperline = 0;
> + }
> + } else {
> + if (set_fmts & FmtWidth)
> + vfmt.fmt.pix.width = width;
> + if (set_fmts & FmtHeight)
> + vfmt.fmt.pix.height = height;
> + if (set_fmts & FmtPixelFormat) {
> + vfmt.fmt.pix.pixelformat = pixfmt;
> + if (vfmt.fmt.pix.pixelformat < 256) {
> + vfmt.fmt.pix.pixelformat =
> + find_pixel_format(fd,
> vfmt.fmt.pix.pixelformat,
> + false, false);
> + }
> + }
> + if (set_fmts & FmtField)
> + vfmt.fmt.pix.field = field;
> + if (set_fmts & FmtFlags)
> + vfmt.fmt.pix.flags = flags;
> + if (set_fmts & FmtBytesPerLine) {
> + vfmt.fmt.pix.bytesperline = bytesperline[0];
> + } else {
> + /*
> + * G_FMT might return a bytesperline value > width,
> + * reset this to 0 to force the driver to update it
> + * to the closest value for the new width.
> + */
> + vfmt.fmt.pix.bytesperline = 0;
> + }
> + }
> + return 0;
> +}
> +
Looks good, but please move vidcap_get_and_update_fmt() before vidcap_set
instead
of after it. It is generally good practice to have lower level functions appear
before higher level functions.
Regards,
Hans
> void vidcap_get(cv4l_fd &fd)
> {
> if (options[OptGetVideoFormat]) {
> diff --git a/utils/v4l2-ctl/v4l2-ctl.h b/utils/v4l2-ctl/v4l2-ctl.h
> index dcc39b51..739dc5a9 100644
> --- a/utils/v4l2-ctl/v4l2-ctl.h
> +++ b/utils/v4l2-ctl/v4l2-ctl.h
> @@ -348,6 +348,7 @@ void stds_list(cv4l_fd &fd);
> // v4l2-ctl-vidcap.cpp
> void vidcap_usage(void);
> void vidcap_cmd(int ch, char *optarg);
> +int vidcap_get_and_update_fmt(cv4l_fd &_fd, struct v4l2_format &vfmt);
> void vidcap_set(cv4l_fd &fd);
> void vidcap_get(cv4l_fd &fd);
> void vidcap_list(cv4l_fd &fd);
>
