On 9/3/19 12:58 PM, Vandana BN wrote:
> Print UVC Metadata information in verbose mode.
>
> Signed-off-by: Vandana BN <[email protected]>
> ---
> utils/v4l2-ctl/v4l2-ctl-meta.cpp | 20 ++++++++++++++++++++
> utils/v4l2-ctl/v4l2-ctl-streaming.cpp | 14 ++++++++------
> utils/v4l2-ctl/v4l2-ctl.h | 1 +
> 3 files changed, 29 insertions(+), 6 deletions(-)
>
> diff --git a/utils/v4l2-ctl/v4l2-ctl-meta.cpp
> b/utils/v4l2-ctl/v4l2-ctl-meta.cpp
> index 75fbd6f4..f1003604 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-meta.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-meta.cpp
> @@ -127,3 +127,23 @@ void meta_list(cv4l_fd &fd)
> print_video_formats(fd, V4L2_BUF_TYPE_META_OUTPUT);
> }
> }
> +
> +static struct vivid_uvc_meta_buf {
Drop static. See the note about __packed below.
> + __u64 ns;
> + __u16 sof;
> + __u8 length;
> + __u8 flags;
> + __u8 buf[];
> +} __packed;
__packed is not needed. And in fact produces this warning:
v4l2-ctl-meta.cpp: At global scope:
v4l2-ctl-meta.cpp:137:3: warning: ‘__packed’ defined but not used
[-Wunused-variable]
} __packed;
^~~~~~~~
gcc doesn't know about it, so it thinks __packed is the name of a variable.
(__packed is a linux kernel define)
> +
> +void print_meta_buffer(FILE *f, cv4l_buffer &buf, cv4l_fmt &fmt, cv4l_queue
> &q)
> +{
> + struct vivid_uvc_meta_buf *vbuf;
> + if (fmt.g_pixelformat() == V4L2_META_FMT_UVC) {
> + fprintf(f, "META format V4L2_META_FMT_UVC:");
That's too long. Just use "UVC: ".
> + for (unsigned i = 0; i< buf.g_num_planes(); i++) {
> + vbuf = (vivid_uvc_meta_buf
> *)(q.g_dataptr(buf.g_index(), i) + buf.g_mem_offset(i));
Why buf.g_mem_offset(i)? Just use q.g_dataptr(buf.g_index(), i), that does the
right thing.
> + fprintf(f, "ns %llu sof %u, len %u, flags
> 0x%x\n",vbuf[i].ns, vbuf[i].sof, vbuf[i].length, vbuf[i].flags);
Print the time in seconds: "%.6fs," , (double)vbuf[i].ns / 1000000000.0
That's easier to read.
Regards,
Hans
> + }
> + }
> +}
> diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> index 11157434..46d53f23 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
> @@ -540,9 +540,9 @@ static void print_buffer(FILE *f, struct v4l2_buffer &buf)
> fprintf(f, "\n");
> }
>
> -static void print_concise_buffer(FILE *f, cv4l_buffer &buf,
> - fps_timestamps &fps_ts, int comp_perc,
> - bool skip_ts = false)
> +static void print_concise_buffer(FILE *f, cv4l_buffer &buf, cv4l_fmt &fmt,
> + cv4l_queue &q, fps_timestamps &fps_ts,
> + int comp_perc, bool skip_ts = false)
> {
> static double last_ts;
>
> @@ -592,6 +592,8 @@ static void print_concise_buffer(FILE *f, cv4l_buffer
> &buf,
> if (fl)
> fprintf(f, " (%s)", bufferflags2s(fl).c_str());
> fprintf(f, "\n");
> + if (v4l_type_is_meta(buf.g_type()))
> + print_meta_buffer(f, buf, fmt, q);
> }
>
> static void stream_buf_caps(cv4l_fd &fd, unsigned buftype)
> @@ -1390,7 +1392,7 @@ static int do_handle_cap(cv4l_fd &fd, cv4l_queue &q,
> FILE *fout, int *index,
> if (!(buf.g_flags() & V4L2_BUF_FLAG_ERROR))
> break;
> if (verbose)
> - print_concise_buffer(stderr, buf, fps_ts, -1);
> + print_concise_buffer(stderr, buf, fmt, q, fps_ts, -1);
> if (fd.qbuf(buf))
> return QUEUE_ERROR;
> }
> @@ -1412,7 +1414,7 @@ static int do_handle_cap(cv4l_fd &fd, cv4l_queue &q,
> FILE *fout, int *index,
> else if (buf.g_flags() & V4L2_BUF_FLAG_BFRAME)
> ch = 'B';
> if (verbose) {
> - print_concise_buffer(stderr, buf, fps_ts,
> + print_concise_buffer(stderr, buf, fmt, q, fps_ts,
> host_fd_to >= 0 ? 100 - comp_perc /
> comp_perc_count : -1);
> comp_perc_count = comp_perc = 0;
> }
> @@ -1502,7 +1504,7 @@ static int do_handle_out(cv4l_fd &fd, cv4l_queue &q,
> FILE *fin, cv4l_buffer *cap
> double ts_secs = buf.g_timestamp().tv_sec +
> buf.g_timestamp().tv_usec / 1000000.0;
> fps_ts.add_ts(ts_secs, buf.g_sequence(), buf.g_field());
> if (verbose)
> - print_concise_buffer(stderr, buf, fps_ts, -1);
> + print_concise_buffer(stderr, buf, fmt, q, fps_ts, -1);
>
> for (unsigned j = 0; j < buf.g_num_planes(); j++)
> buf.s_bytesused(buf.g_length(j), j);
> diff --git a/utils/v4l2-ctl/v4l2-ctl.h b/utils/v4l2-ctl/v4l2-ctl.h
> index 5797d784..36051566 100644
> --- a/utils/v4l2-ctl/v4l2-ctl.h
> +++ b/utils/v4l2-ctl/v4l2-ctl.h
> @@ -406,6 +406,7 @@ void meta_cmd(int ch, char *optarg);
> void meta_set(cv4l_fd &fd);
> void meta_get(cv4l_fd &fd);
> void meta_list(cv4l_fd &fd);
> +void print_meta_buffer(FILE *f, cv4l_buffer &buf, cv4l_fmt &fmt, cv4l_queue
> &q);
>
> // v4l2-ctl-subdev.cpp
> void subdev_usage(void);
>
