From 75ef810f8867c703ad2cdd6409e091c748ad1436 Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Tue, 4 Aug 2020 14:30:33 +0800
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Subject: [PATCH 25/74] Support setting touch calibration through environment
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For example:
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1/ Use weston-calibrator tool to get calibration data
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[root@rk3399:/]# weston-calibrator
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Final calibration values: -0.846961 0.122487 0.864176 -0.110204 -0.685913 0.958219
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2/ Export calibration data through environment:
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export WESTON_TOUCH_CALIBRATION="-0.846961 0.122487 0.864176 -0.110204 -0.685913 0.958219"
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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clients/calibrator.c | 9 +++++++++
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clients/touch-calibrator.c | 12 ++++++++----
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libweston/libinput-device.c | 13 +++++++++++++
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3 files changed, 30 insertions(+), 4 deletions(-)
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diff --git a/clients/calibrator.c b/clients/calibrator.c
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index be65d9b..20fc1e7 100644
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--- a/clients/calibrator.c
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+++ b/clients/calibrator.c
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@@ -106,6 +106,7 @@ finish_calibration (struct calibrator *calibrator)
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struct weston_matrix m;
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struct weston_matrix inverse;
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struct weston_vector x_calib, y_calib;
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+ struct rectangle allocation;
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int i;
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@@ -141,6 +142,14 @@ finish_calibration (struct calibrator *calibrator)
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x_calib.f[0], x_calib.f[1], x_calib.f[2],
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y_calib.f[0], y_calib.f[1], y_calib.f[2]);
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+ widget_get_allocation(calibrator->widget, &allocation);
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+ x_calib.f[2] /= allocation.width;
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+ y_calib.f[2] /= allocation.height;
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+
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+ printf ("Final calibration values: %f %f %f %f %f %f\n",
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+ x_calib.f[0], x_calib.f[1], x_calib.f[2],
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+ y_calib.f[0], y_calib.f[1], y_calib.f[2]);
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+
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exit(0);
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}
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diff --git a/clients/touch-calibrator.c b/clients/touch-calibrator.c
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index 49dd920..04a966b 100644
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--- a/clients/touch-calibrator.c
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+++ b/clients/touch-calibrator.c
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@@ -772,15 +772,19 @@ touch_device_handler(void *data, struct weston_touch_calibration *c,
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if (!cal->match_name) {
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printf("device \"%s\" - head \"%s\"\n", device, head);
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- return;
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- }
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- if (cal->device_name)
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+ if (!cal->device_name)
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+ cal->device_name = strdup(device);
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return;
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+ }
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if (strcmp(cal->match_name, device) == 0 ||
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- strcmp(cal->match_name, head) == 0)
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+ strcmp(cal->match_name, head) == 0) {
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+ if (cal->device_name)
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+ free(cal->device_name);
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+
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cal->device_name = strdup(device);
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+ }
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}
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struct weston_touch_calibration_listener touch_calibration_listener = {
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diff --git a/libweston/libinput-device.c b/libweston/libinput-device.c
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index 4ea89de..09bd459 100644
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--- a/libweston/libinput-device.c
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+++ b/libweston/libinput-device.c
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@@ -627,6 +627,19 @@ evdev_device_set_calibration(struct evdev_device *device)
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return;
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}
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+ calibration_values = getenv("WESTON_TOUCH_CALIBRATION");
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+ if (calibration_values && sscanf(calibration_values,
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+ "%f %f %f %f %f %f",
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+ &calibration.m[0],
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+ &calibration.m[1],
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+ &calibration.m[2],
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+ &calibration.m[3],
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+ &calibration.m[4],
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+ &calibration.m[5]) == 6) {
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+ do_set_calibration(device, &calibration);
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+ return;
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+ }
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+
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width = device->output->width;
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height = device->output->height;
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if (width == 0 || height == 0)
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--
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2.20.1
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