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* [Linux-kernel-mentees] [PATCH] v4l2-ctl:Add Support for Touch
@ 2019-11-08  7:12 Vandana BN
  0 siblings, 0 replies; only message in thread
From: Vandana BN @ 2019-11-08  7:12 UTC (permalink / raw)
  To: linux-media, linux-kernel-mentees

Add support to verify V4L2_TCH_FMT_TU16 format touch inputs.

Signed-off-by: Vandana BN <bnvandana@gmail.com>
---
 utils/v4l2-ctl/v4l2-ctl-streaming.cpp |  4 ++++
 utils/v4l2-ctl/v4l2-ctl-vidcap.cpp    | 29 +++++++++++++++++++++++++++
 utils/v4l2-ctl/v4l2-ctl.h             |  1 +
 3 files changed, 34 insertions(+)

diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
index 184bfd64..191a18c5 100644
--- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
@@ -595,6 +595,10 @@ 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))
+		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..99945248 100644
--- a/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-vidcap.cpp
@@ -358,3 +358,32 @@ void vidcap_list(cv4l_fd &fd)
 		}
 	}
 }
+
+#define VIVID_TCH_HEIGHT        24
+#define VIVID_TCH_WIDTH         14
+
+struct vivid_touch_buf {
+        __u16     buf[VIVID_TCH_WIDTH * VIVID_TCH_HEIGHT];
+	int test_pattern;
+};
+
+void print_touch_buffer(FILE *f, cv4l_buffer &buf, cv4l_fmt &fmt, cv4l_queue &q)
+{
+        struct vivid_touch_buf *vbuf;
+        int i=0;
+
+        switch (fmt.g_pixelformat()) {
+        case V4L2_TCH_FMT_TU16:
+                vbuf = (vivid_touch_buf *)q.g_dataptr(buf.g_index(), 0);
+		fprintf(f, "Test Pattern: %d\n",vbuf->test_pattern);
+                fprintf(f, "TU16: ");
+		for (i = 0; i < (VIVID_TCH_HEIGHT*VIVID_TCH_WIDTH); i++) {
+			if (vbuf->buf[i])
+			fprintf(f, "x: %d y: %d Pressure Value: %d\n",
+				i % VIVID_TCH_WIDTH,
+				i / VIVID_TCH_WIDTH,
+				vbuf->buf[i]);
+		}
+                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

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