From: Vandana BN <bnvandana@gmail.com>
To: linux-media@vger.kernel.org,
linux-kernel-mentees@lists.linuxfoundation.org
Subject: [Linux-kernel-mentees] [PATCH] v4l2-ctl:Add Support for Touch
Date: Fri, 8 Nov 2019 12:42:27 +0530 [thread overview]
Message-ID: <20191108071227.10982-1-bnvandana@gmail.com> (raw)
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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reply other threads:[~2019-11-08 7:12 UTC|newest]
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