v4l2-ctl: add timestamp source support.

Show the timestamp source when receiving a buffer.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>

diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
index 49aad26..975dbf2 100644 (file)
--- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
@@ -131,6 +131,21 @@ static std::string timestamp_type2s(__u32 flags)
        }
 }
 
+static std::string timestamp_src2s(__u32 flags)
+{
+       char buf[20];
+
+       switch (flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK) {
+       case V4L2_BUF_FLAG_TSTAMP_SRC_EOF:
+               return "End-of-Frame";
+       case V4L2_BUF_FLAG_TSTAMP_SRC_SOE:
+               return "Start-of-Exposure";
+       default:
+               sprintf(buf, "Source %d", (flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK) >> 16);
+               return std::string(buf);
+       }
+}
+
 static const flag_def tc_flags_def[] = {
        { V4L2_TC_FLAG_DROPFRAME, "dropframe" },
        { V4L2_TC_FLAG_COLORFRAME, "colorframe" },
@@ -149,8 +164,8 @@ static void print_buffer(FILE *f, struct v4l2_buffer &buf)
        fprintf(f, "\tSequence : %u\n", buf.sequence);
        fprintf(f, "\tLength   : %u\n", buf.length);
        fprintf(f, "\tBytesused: %u\n", buf.bytesused);
-       fprintf(f, "\tTimestamp: %lu.%06lus (%s)\n", buf.timestamp.tv_sec, buf.timestamp.tv_usec,
-                       timestamp_type2s(buf.flags).c_str());
+       fprintf(f, "\tTimestamp: %lu.%06lus (%s, %s)\n", buf.timestamp.tv_sec, buf.timestamp.tv_usec,
+                       timestamp_type2s(buf.flags).c_str(), timestamp_src2s(buf.flags).c_str());
        if (buf.flags & V4L2_BUF_FLAG_TIMECODE) {
                static const int fps_types[] = { 0, 24, 25, 30, 50, 60 };
                int fps = buf.timecode.type;