[PATCH v4] v4l2-ctl:Add Support for Touch

[Vandana BN <bnvandana@xxxxxxxxx>]

Add support to verify V4L2_TCH_FMT_DELTA_TD16 format touch inputs.

Signed-off-by: Vandana BN <bnvandana@xxxxxxxxx>
---
 utils/v4l2-ctl/v4l2-ctl-streaming.cpp |  5 +++++
 utils/v4l2-ctl/v4l2-ctl-vidcap.cpp    | 19 +++++++++++++++++++
 utils/v4l2-ctl/v4l2-ctl.h             |  1 +
 3 files changed, 25 insertions(+)

diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
index 184bfd64..47addc41 100644
--- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
@@ -595,6 +595,11 @@ static void print_concise_buffer(FILE *f, cv4l_buffer &buf, cv4l_fmt &fmt,
 	if (v4l_type_is_meta(buf.g_type()) && buf.g_bytesused(0) &&
 	    !(buf.g_flags() & V4L2_BUF_FLAG_ERROR))
 		print_meta_buffer(f, buf, fmt, q);
+
+	if ((capabilities & V4L2_CAP_TOUCH) && buf.g_bytesused(0) &&
+	    !(buf.g_flags() & V4L2_BUF_FLAG_ERROR) &&
+	    (fmt.g_width() < 64 ||  fmt.g_height() < 64))
+		print_touch_buffer(f, buf, fmt, q);
 }
 
 static void stream_buf_caps(cv4l_fd &fd, unsigned buftype)
diff --git a/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp b/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
index 3a29251a..538ece3e 100644
--- a/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
@@ -358,3 +358,22 @@ void vidcap_list(cv4l_fd &fd)
 		}
 	}
 }
+
+void print_touch_buffer(FILE *f, cv4l_buffer &buf, cv4l_fmt &fmt, cv4l_queue &q)
+{
+	__s16 *vbuf = NULL;
+	__u32 x, y;
+
+	switch (fmt.g_pixelformat()) {
+	case V4L2_TCH_FMT_DELTA_TD16:
+		vbuf = (__s16*)q.g_dataptr(buf.g_index(), 0);
+		for (y = 0; y < fmt.g_height(); y++) {
+			fprintf(f, "TD16:");
+			for (x = 0; x < fmt.g_width(); x++, vbuf++) {
+				fprintf(f, "%-3d ", (__s16)le16toh(*vbuf));
+			}
+			fprintf(f, "\n");
+		}
+		break;
+	}
+}
diff --git a/utils/v4l2-ctl/v4l2-ctl.h b/utils/v4l2-ctl/v4l2-ctl.h
index b0f65e9b..b31be7f5 100644
--- a/utils/v4l2-ctl/v4l2-ctl.h
+++ b/utils/v4l2-ctl/v4l2-ctl.h
@@ -373,6 +373,7 @@ 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);
+void print_touch_buffer(FILE *f, cv4l_buffer &buf, cv4l_fmt &fmt, cv4l_queue &q);
 
 // v4l2-ctl-vidout.cpp
 void vidout_usage(void);
-- 
2.17.1