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test: v4l2_videodevice: Add V4L2 control test

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Add a test that exercises the control enumeration, get and set APIs on a
V4L2Device.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Tested-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
This commit is contained in:
Laurent Pinchart 2019-10-12 05:56:13 +03:00
parent a1c6b2b641
commit abe2c1b55c
2 changed files with 94 additions and 0 deletions
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93
test/v4l2_videodevice/controls.cpp Normal file
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* controls.cpp - V4L2 device controls handling test
*/
#include <climits>
#include <iostream>
#include "v4l2_videodevice.h"
#include "v4l2_videodevice_test.h"
using namespace std;
using namespace libcamera;
class V4L2ControlTest : public V4L2VideoDeviceTest
{
public:
V4L2ControlTest()
: V4L2VideoDeviceTest("vivid", "vivid-000-vid-cap")
{
}
protected:
int run()
{
const V4L2ControlInfoMap &info = capture_->controls();
/* Test control enumeration. */
if (info.empty()) {
cerr << "Failed to enumerate controls" << endl;
return TestFail;
}
if (info.find(V4L2_CID_BRIGHTNESS) == info.end() ||
info.find(V4L2_CID_CONTRAST) == info.end() ||
info.find(V4L2_CID_SATURATION) == info.end()) {
cerr << "Missing controls" << endl;
return TestFail;
}
const V4L2ControlInfo &brightness = info.find(V4L2_CID_BRIGHTNESS)->second;
const V4L2ControlInfo &contrast = info.find(V4L2_CID_CONTRAST)->second;
const V4L2ControlInfo &saturation = info.find(V4L2_CID_SATURATION)->second;
/* Test getting controls. */
V4L2ControlList ctrls;
ctrls.add(V4L2_CID_BRIGHTNESS);
ctrls.add(V4L2_CID_CONTRAST);
ctrls.add(V4L2_CID_SATURATION);
int ret = capture_->getControls(&ctrls);
if (ret) {
cerr << "Failed to get controls" << endl;
return TestFail;
}
/* Test setting controls. */
ctrls[V4L2_CID_BRIGHTNESS]->value() = brightness.range().min();
ctrls[V4L2_CID_CONTRAST]->value() = contrast.range().max();
ctrls[V4L2_CID_SATURATION]->value() = saturation.range().min();
ret = capture_->setControls(&ctrls);
if (ret) {
cerr << "Failed to set controls" << endl;
return TestFail;
}
/* Test setting controls outside of range. */
ctrls[V4L2_CID_BRIGHTNESS]->value() = brightness.range().min().get<int32_t>() - 1;
ctrls[V4L2_CID_CONTRAST]->value() = contrast.range().max().get<int32_t>() + 1;
ctrls[V4L2_CID_SATURATION]->value() = saturation.range().min().get<int32_t>() + 1;
ret = capture_->setControls(&ctrls);
if (ret) {
cerr << "Failed to set controls (out of range)" << endl;
return TestFail;
}
if (ctrls[V4L2_CID_BRIGHTNESS]->value() != brightness.range().min() ||
ctrls[V4L2_CID_CONTRAST]->value() != brightness.range().max() ||
ctrls[V4L2_CID_SATURATION]->value() != saturation.range().min().get<int32_t>() + 1) {
cerr << "Controls not updated when set" << endl;
return TestFail;
}
return TestPass;
}
};
TEST_REGISTER(V4L2ControlTest);