Hi Sakari,

Can you check if this patch is needed at all? The latest v4l2-ctl should work
for both meta capture and output, i.e. all meta options (v4l2-ctl --help-meta)
just look up the buffer type of the video device and use that to 
list/set/get/try
the formats.

Regards,

        Hans

On 01/14/2019 03:13 PM, Sakari Ailus wrote:
> Add support for META_OUTPUT buffer type to v4l2-ctl.
> 
> Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
> ---
>  utils/v4l2-ctl/Makefile.am           |   3 +-
>  utils/v4l2-ctl/v4l2-ctl-common.cpp   |   3 +-
>  utils/v4l2-ctl/v4l2-ctl-meta-out.cpp | 106 
> +++++++++++++++++++++++++++++++++++
>  utils/v4l2-ctl/v4l2-ctl-meta.cpp     |  19 ++++---
>  utils/v4l2-ctl/v4l2-ctl.cpp          |  16 ++++++
>  utils/v4l2-ctl/v4l2-ctl.h            |  13 +++++
>  6 files changed, 150 insertions(+), 10 deletions(-)
>  create mode 100644 utils/v4l2-ctl/v4l2-ctl-meta-out.cpp
> 
> diff --git a/utils/v4l2-ctl/Makefile.am b/utils/v4l2-ctl/Makefile.am
> index f612e0eee4..2b99a95e41 100644
> --- a/utils/v4l2-ctl/Makefile.am
> +++ b/utils/v4l2-ctl/Makefile.am
> @@ -7,7 +7,8 @@ v4l2_ctl_SOURCES = v4l2-ctl.cpp v4l2-ctl.h 
> v4l2-ctl-common.cpp v4l2-ctl-tuner.cp
>       v4l2-ctl-overlay.cpp v4l2-ctl-vbi.cpp v4l2-ctl-selection.cpp 
> v4l2-ctl-misc.cpp \
>       v4l2-ctl-streaming.cpp v4l2-ctl-sdr.cpp v4l2-ctl-edid.cpp 
> v4l2-ctl-modes.cpp \
>       v4l2-ctl-subdev.cpp v4l2-tpg-colors.c v4l2-tpg-core.c v4l-stream.c 
> v4l2-ctl-meta.cpp \
> -     media-info.cpp v4l2-info.cpp codec-fwht.c codec-v4l2-fwht.c
> +     v4l2-ctl-meta-out.cpp media-info.cpp v4l2-info.cpp codec-fwht.c \
> +     codec-v4l2-fwht.c
>  v4l2_ctl_CPPFLAGS = -I$(top_srcdir)/utils/common
>  
>  media-bus-format-names.h: ../../include/linux/media-bus-format.h
> diff --git a/utils/v4l2-ctl/v4l2-ctl-common.cpp 
> b/utils/v4l2-ctl/v4l2-ctl-common.cpp
> index e2710335ec..ffe4627498 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-common.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-common.cpp
> @@ -70,7 +70,8 @@ void common_usage(void)
>              "  -h, --help         display this help message\n"
>              "  --help-all         all options\n"
>              "  --help-io          input/output options\n"
> -            "  --help-meta        metadata format options\n"
> +            "  --help-meta        metadata capture format options\n"
> +            "  --help-meta-out    metadata output format options\n"
>              "  --help-misc        miscellaneous options\n"
>              "  --help-overlay     overlay format options\n"
>              "  --help-sdr         SDR format options\n"
> diff --git a/utils/v4l2-ctl/v4l2-ctl-meta-out.cpp 
> b/utils/v4l2-ctl/v4l2-ctl-meta-out.cpp
> new file mode 100644
> index 0000000000..3ffeee0ee5
> --- /dev/null
> +++ b/utils/v4l2-ctl/v4l2-ctl-meta-out.cpp
> @@ -0,0 +1,106 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +
> +#include <unistd.h>
> +#include <stdlib.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <inttypes.h>
> +#include <getopt.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <fcntl.h>
> +#include <ctype.h>
> +#include <errno.h>
> +#include <sys/ioctl.h>
> +#include <sys/time.h>
> +#include <dirent.h>
> +#include <math.h>
> +
> +#include "v4l2-ctl.h"
> +
> +static struct v4l2_format vfmt;      /* set_format/get_format */
> +
> +void meta_out_usage(void)
> +{
> +     printf("\nMetadata Output Formats options:\n"
> +            "  --list-formats-meta-out display supported metadata output 
> formats [VIDIOC_ENUM_FMT]\n"
> +            "  --get-fmt-meta-out      query the metadata output format 
> [VIDIOC_G_FMT]\n"
> +            "  --set-fmt-meta-out <f>  set the metadata output format 
> [VIDIOC_S_FMT]\n"
> +            "                          parameter is either the format index 
> as reported by\n"
> +            "                          --list-formats-meta-out, or the 
> fourcc value as a string\n"
> +            "  --try-fmt-meta-out <f>  try the metadata output format 
> [VIDIOC_TRY_FMT]\n"
> +            "                          parameter is either the format index 
> as reported by\n"
> +            "                          --list-formats-meta-out, or the 
> fourcc value as a string\n"
> +            );
> +}
> +
> +void meta_out_cmd(int ch, char *optarg)
> +{
> +     switch (ch) {
> +     case OptSetMetaOutFormat:
> +     case OptTryMetaOutFormat:
> +             if (strlen(optarg) == 0) {
> +                     meta_out_usage();
> +                     exit(1);
> +             } else if (strlen(optarg) == 4) {
> +                     vfmt.fmt.meta.dataformat = v4l2_fourcc(optarg[0],
> +                                     optarg[1], optarg[2], optarg[3]);
> +             } else {
> +                     vfmt.fmt.meta.dataformat = strtol(optarg, 0L, 0);
> +             }
> +             break;
> +     }
> +}
> +
> +void meta_out_set(cv4l_fd &_fd)
> +{
> +     int fd = _fd.g_fd();
> +     int ret;
> +
> +     if ((options[OptSetMetaOutFormat] || options[OptTryMetaOutFormat]) &&
> +         v4l_type_is_meta(_fd.g_type()) &&
> +         v4l_type_is_output(_fd.g_type())) {
> +             struct v4l2_format in_vfmt;
> +
> +             in_vfmt.type = _fd.g_type();
> +             in_vfmt.fmt.meta.dataformat = vfmt.fmt.meta.dataformat;
> +
> +             if (in_vfmt.fmt.meta.dataformat < 256) {
> +                     struct v4l2_fmtdesc fmt;
> +
> +                     fmt.index = in_vfmt.fmt.meta.dataformat;
> +                     fmt.type = in_vfmt.type;
> +
> +                     if (doioctl(fd, VIDIOC_ENUM_FMT, &fmt))
> +                             fmt.pixelformat = 0;
> +
> +                     in_vfmt.fmt.meta.dataformat = fmt.pixelformat;
> +             }
> +
> +             if (options[OptSetMetaFormat])
> +                     ret = doioctl(fd, VIDIOC_S_FMT, &in_vfmt);
> +             else
> +                     ret = doioctl(fd, VIDIOC_TRY_FMT, &in_vfmt);
> +             if (ret == 0 && (verbose || options[OptTryMetaFormat]))
> +                     printfmt(fd, in_vfmt);
> +     }
> +}
> +
> +void meta_out_get(cv4l_fd &fd)
> +{
> +     if (options[OptGetMetaOutFormat] && v4l_type_is_meta(fd.g_type()) &&
> +         v4l_type_is_output(fd.g_type())) {
> +             vfmt.type = fd.g_type();
> +             if (doioctl(fd.g_fd(), VIDIOC_G_FMT, &vfmt) == 0)
> +                     printfmt(fd.g_fd(), vfmt);
> +     }
> +}
> +
> +void meta_out_list(cv4l_fd &fd)
> +{
> +     if (options[OptListMetaOutFormats] && v4l_type_is_meta(fd.g_type()) &&
> +         v4l_type_is_output(fd.g_type())) {
> +             printf("ioctl: VIDIOC_ENUM_FMT\n");
> +             print_video_formats(fd, fd.g_type());
> +     }
> +}
> diff --git a/utils/v4l2-ctl/v4l2-ctl-meta.cpp 
> b/utils/v4l2-ctl/v4l2-ctl-meta.cpp
> index 37c91940a8..32060832f0 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-meta.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-meta.cpp
> @@ -20,13 +20,13 @@ static struct v4l2_format vfmt;   /* 
> set_format/get_format */
>  
>  void meta_usage(void)
>  {
> -     printf("\nMetadata Formats options:\n"
> -            "  --list-formats-meta display supported metadata formats 
> [VIDIOC_ENUM_FMT]\n"
> -            "  --get-fmt-meta      query the metadata format 
> [VIDIOC_G_FMT]\n"
> -            "  --set-fmt-meta <f>  set the metadata format [VIDIOC_S_FMT]\n"
> +     printf("\nMetadata Capture Formats options:\n"
> +            "  --list-formats-meta display supported metadata capture 
> formats [VIDIOC_ENUM_FMT]\n"
> +            "  --get-fmt-meta      query the metadata capture format 
> [VIDIOC_G_FMT]\n"
> +            "  --set-fmt-meta <f>  set the metadata capture format 
> [VIDIOC_S_FMT]\n"
>              "                     parameter is either the format index as 
> reported by\n"
>              "                     --list-formats-meta, or the fourcc value 
> as a string\n"
> -            "  --try-fmt-meta <f>  try the metadata format 
> [VIDIOC_TRY_FMT]\n"
> +            "  --try-fmt-meta <f>  try the metadata capture format 
> [VIDIOC_TRY_FMT]\n"
>              "                     parameter is either the format index as 
> reported by\n"
>              "                     --list-formats-meta, or the fourcc value 
> as a string\n"
>              );
> @@ -56,7 +56,8 @@ void meta_set(cv4l_fd &_fd)
>       int ret;
>  
>       if ((options[OptSetMetaFormat] || options[OptTryMetaFormat]) &&
> -         v4l_type_is_meta(_fd.g_type())) {
> +         v4l_type_is_meta(_fd.g_type()) &&
> +         v4l_type_is_capture(_fd.g_type())) {
>               struct v4l2_format in_vfmt;
>  
>               in_vfmt.type = _fd.g_type();
> @@ -85,7 +86,8 @@ void meta_set(cv4l_fd &_fd)
>  
>  void meta_get(cv4l_fd &fd)
>  {
> -     if (options[OptGetMetaFormat] && v4l_type_is_meta(fd.g_type())) {
> +     if (options[OptGetMetaFormat] && v4l_type_is_meta(fd.g_type()) &&
> +         v4l_type_is_capture(fd.g_type())) {
>               vfmt.type = fd.g_type();
>               if (doioctl(fd.g_fd(), VIDIOC_G_FMT, &vfmt) == 0)
>                       printfmt(fd.g_fd(), vfmt);
> @@ -94,7 +96,8 @@ void meta_get(cv4l_fd &fd)
>  
>  void meta_list(cv4l_fd &fd)
>  {
> -     if (options[OptListMetaFormats] && v4l_type_is_meta(fd.g_type())) {
> +     if (options[OptListMetaFormats] && v4l_type_is_meta(fd.g_type()) &&
> +         v4l_type_is_capture(fd.g_type())) {
>               printf("ioctl: VIDIOC_ENUM_FMT\n");
>               print_video_formats(fd, fd.g_type());
>       }
> diff --git a/utils/v4l2-ctl/v4l2-ctl.cpp b/utils/v4l2-ctl/v4l2-ctl.cpp
> index 1783979d76..81a66938b6 100644
> --- a/utils/v4l2-ctl/v4l2-ctl.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl.cpp
> @@ -88,6 +88,7 @@ static struct option long_options[] = {
>       {"help-vbi", no_argument, 0, OptHelpVbi},
>       {"help-sdr", no_argument, 0, OptHelpSdr},
>       {"help-meta", no_argument, 0, OptHelpMeta},
> +     {"help-meta-out", no_argument, 0, OptHelpMetaOut},
>       {"help-subdev", no_argument, 0, OptHelpSubDev},
>       {"help-selection", no_argument, 0, OptHelpSelection},
>       {"help-misc", no_argument, 0, OptHelpMisc},
> @@ -122,6 +123,7 @@ static struct option long_options[] = {
>       {"list-formats-out", no_argument, 0, OptListOutFormats},
>       {"list-formats-out-ext", no_argument, 0, OptListOutFormatsExt},
>       {"list-formats-meta", no_argument, 0, OptListMetaFormats},
> +     {"list-formats-meta-out", no_argument, 0, OptListMetaOutFormats},
>       {"list-subdev-mbus-codes", optional_argument, 0, 
> OptListSubDevMBusCodes},
>       {"list-subdev-framesizes", required_argument, 0, 
> OptListSubDevFrameSizes},
>       {"list-subdev-frameintervals", required_argument, 0, 
> OptListSubDevFrameIntervals},
> @@ -174,6 +176,9 @@ static struct option long_options[] = {
>       {"get-fmt-meta", no_argument, 0, OptGetMetaFormat},
>       {"set-fmt-meta", required_argument, 0, OptSetMetaFormat},
>       {"try-fmt-meta", required_argument, 0, OptTryMetaFormat},
> +     {"get-fmt-meta-out", no_argument, 0, OptGetMetaOutFormat},
> +     {"set-fmt-meta-out", required_argument, 0, OptSetMetaOutFormat},
> +     {"try-fmt-meta-out", required_argument, 0, OptTryMetaOutFormat},
>       {"get-subdev-fmt", optional_argument, 0, OptGetSubDevFormat},
>       {"set-subdev-fmt", required_argument, 0, OptSetSubDevFormat},
>       {"try-subdev-fmt", required_argument, 0, OptTrySubDevFormat},
> @@ -238,6 +243,7 @@ static struct option long_options[] = {
>       {"list-buffers-sdr", no_argument, 0, OptListBuffersSdr},
>       {"list-buffers-sdr-out", no_argument, 0, OptListBuffersSdrOut},
>       {"list-buffers-meta", no_argument, 0, OptListBuffersMeta},
> +     {"list-buffers-meta-out", no_argument, 0, OptListBuffersMetaOut},
>       {"stream-count", required_argument, 0, OptStreamCount},
>       {"stream-skip", required_argument, 0, OptStreamSkip},
>       {"stream-loop", no_argument, 0, OptStreamLoop},
> @@ -290,6 +296,7 @@ static void usage_all(void)
>         vbi_usage();
>         sdr_usage();
>         meta_usage();
> +       meta_out_usage();
>         selection_usage();
>         misc_usage();
>         streaming_usage();
> @@ -507,6 +514,7 @@ void printfmt(int fd, const struct v4l2_format &vfmt)
>               printf("\tBuffer Size     : %u\n", vfmt.fmt.sdr.buffersize);
>               break;
>       case V4L2_BUF_TYPE_META_CAPTURE:
> +     case V4L2_BUF_TYPE_META_OUTPUT:
>               printf("\tSample Format   : '%s'%s\n", 
> fcc2s(vfmt.fmt.meta.dataformat).c_str(),
>                      printfmtname(fd, vfmt.type, 
> vfmt.fmt.meta.dataformat).c_str());
>               printf("\tBuffer Size     : %u\n", vfmt.fmt.meta.buffersize);
> @@ -1039,6 +1047,9 @@ int main(int argc, char **argv)
>               case OptHelpMeta:
>                       meta_usage();
>                       return 0;
> +             case OptHelpMetaOut:
> +                     meta_out_usage();
> +                     return 0;
>               case OptHelpSubDev:
>                       subdev_usage();
>                       return 0;
> @@ -1109,6 +1120,7 @@ int main(int argc, char **argv)
>                       vbi_cmd(ch, optarg);
>                       sdr_cmd(ch, optarg);
>                       meta_cmd(ch, optarg);
> +                     meta_out_cmd(ch, optarg);
>                       subdev_cmd(ch, optarg);
>                       selection_cmd(ch, optarg);
>                       misc_cmd(ch, optarg);
> @@ -1247,6 +1259,7 @@ int main(int argc, char **argv)
>               options[OptGetSdrFormat] = 1;
>               options[OptGetSdrOutFormat] = 1;
>               options[OptGetMetaFormat] = 1;
> +             options[OptGetMetaOutFormat] = 1;
>               options[OptGetFBuf] = 1;
>               options[OptGetCropCap] = 1;
>               options[OptGetOutputCropCap] = 1;
> @@ -1282,6 +1295,7 @@ int main(int argc, char **argv)
>       vbi_set(c_fd);
>       sdr_set(c_fd);
>       meta_set(c_fd);
> +     meta_out_set(c_fd);
>       subdev_set(c_fd);
>       selection_set(c_fd);
>       misc_set(c_fd);
> @@ -1299,6 +1313,7 @@ int main(int argc, char **argv)
>       vbi_get(c_fd);
>       sdr_get(c_fd);
>       meta_get(c_fd);
> +     meta_out_get(c_fd);
>       subdev_get(c_fd);
>       selection_get(c_fd);
>       misc_get(c_fd);
> @@ -1315,6 +1330,7 @@ int main(int argc, char **argv)
>       vbi_list(c_fd);
>       sdr_list(c_fd);
>       meta_list(c_fd);
> +     meta_out_list(c_fd);
>       subdev_list(c_fd);
>       streaming_list(c_fd, c_out_fd);
>  
> diff --git a/utils/v4l2-ctl/v4l2-ctl.h b/utils/v4l2-ctl/v4l2-ctl.h
> index 5a52a0a48f..da9615392e 100644
> --- a/utils/v4l2-ctl/v4l2-ctl.h
> +++ b/utils/v4l2-ctl/v4l2-ctl.h
> @@ -89,6 +89,7 @@ enum Option {
>       OptGetSdrFormat,
>       OptGetSdrOutFormat,
>       OptGetMetaFormat,
> +     OptGetMetaOutFormat,
>       OptGetSubDevFormat,
>       OptSetSlicedVbiOutFormat,
>       OptSetOverlayFormat,
> @@ -97,6 +98,7 @@ enum Option {
>       OptSetSdrFormat,
>       OptSetSdrOutFormat,
>       OptSetMetaFormat,
> +     OptSetMetaOutFormat,
>       OptSetSubDevFormat,
>       OptTryVideoOutFormat,
>       OptTrySlicedVbiOutFormat,
> @@ -108,6 +110,7 @@ enum Option {
>       OptTrySdrFormat,
>       OptTrySdrOutFormat,
>       OptTryMetaFormat,
> +     OptTryMetaOutFormat,
>       OptTrySubDevFormat,
>       OptAll,
>       OptListStandards,
> @@ -122,6 +125,7 @@ enum Option {
>       OptListOutFormats,
>       OptListOutFormatsExt,
>       OptListMetaFormats,
> +     OptListMetaOutFormats,
>       OptListSubDevMBusCodes,
>       OptListSubDevFrameSizes,
>       OptListSubDevFrameIntervals,
> @@ -205,6 +209,7 @@ enum Option {
>       OptListBuffersSdr,
>       OptListBuffersSdrOut,
>       OptListBuffersMeta,
> +     OptListBuffersMetaOut,
>       OptStreamCount,
>       OptStreamSkip,
>       OptStreamLoop,
> @@ -249,6 +254,7 @@ enum Option {
>       OptHelpVbi,
>       OptHelpSdr,
>       OptHelpMeta,
> +     OptHelpMetaOut,
>       OptHelpSubDev,
>       OptHelpSelection,
>       OptHelpMisc,
> @@ -386,6 +392,13 @@ void meta_set(cv4l_fd &fd);
>  void meta_get(cv4l_fd &fd);
>  void meta_list(cv4l_fd &fd);
>  
> +// v4l2-ctl-meta-out.cpp
> +void meta_out_usage(void);
> +void meta_out_cmd(int ch, char *optarg);
> +void meta_out_set(cv4l_fd &fd);
> +void meta_out_get(cv4l_fd &fd);
> +void meta_out_list(cv4l_fd &fd);
> +
>  // v4l2-ctl-subdev.cpp
>  void subdev_usage(void);
>  void subdev_cmd(int ch, char *optarg);
> 

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