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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 <algorithm>
#include <array>
#include <iostream>
#include <limits.h>
#include "libcamera/internal/v4l2_videodevice.h"
#include "v4l2_videodevice_test.h"
/* These come from the vivid driver. */
#define VIVID_CID_CUSTOM_BASE (V4L2_CID_USER_BASE | 0xf000)
#define VIVID_CID_U8_4D_ARRAY (VIVID_CID_CUSTOM_BASE + 10)
/* Helper for VIVID_CID_U8_4D_ARRAY control array size: not from kernel. */
#define VIVID_CID_U8_ARRAY_SIZE (2 * 3 * 4 * 5)
using namespace std;
using namespace libcamera;
class V4L2ControlTest : public V4L2VideoDeviceTest
{
public:
V4L2ControlTest()
: V4L2VideoDeviceTest("vivid", "vivid-000-vid-cap")
{
}
protected:
int run()
{
const ControlInfoMap &infoMap = capture_->controls();
/* Test control enumeration. */
if (infoMap.empty()) {
cerr << "Failed to enumerate controls" << endl;
return TestFail;
}
if (infoMap.find(V4L2_CID_BRIGHTNESS) == infoMap.end() ||
infoMap.find(V4L2_CID_CONTRAST) == infoMap.end() ||
infoMap.find(V4L2_CID_SATURATION) == infoMap.end() ||
infoMap.find(VIVID_CID_U8_4D_ARRAY) == infoMap.end()) {
cerr << "Missing controls" << endl;
return TestFail;
}
const ControlInfo &brightness = infoMap.find(V4L2_CID_BRIGHTNESS)->second;
const ControlInfo &contrast = infoMap.find(V4L2_CID_CONTRAST)->second;
const ControlInfo &saturation = infoMap.find(V4L2_CID_SATURATION)->second;
const ControlInfo &u8 = infoMap.find(VIVID_CID_U8_4D_ARRAY)->second;
/* Test getting controls. */
ControlList ctrls = capture_->getControls({ V4L2_CID_BRIGHTNESS,
V4L2_CID_CONTRAST,
V4L2_CID_SATURATION,
VIVID_CID_U8_4D_ARRAY });
if (ctrls.empty()) {
cerr << "Failed to get controls" << endl;
return TestFail;
}
if (ctrls.infoMap() != &infoMap) {
cerr << "Incorrect infoMap for retrieved controls" << endl;
return TestFail;
}
if (ctrls.get(V4L2_CID_BRIGHTNESS).get<int32_t>() == -1 ||
ctrls.get(V4L2_CID_CONTRAST).get<int32_t>() == -1 ||
ctrls.get(V4L2_CID_SATURATION).get<int32_t>() == -1) {
cerr << "Incorrect value for retrieved controls" << endl;
return TestFail;
}
uint8_t u8Min = u8.min().get<uint8_t>();
uint8_t u8Max = u8.max().get<uint8_t>();
Span<const uint8_t> u8Span = ctrls.get(VIVID_CID_U8_4D_ARRAY).get<Span<const uint8_t>>();
bool valid = std::all_of(u8Span.begin(), u8Span.end(),
[&](uint8_t v) { return v >= u8Min && v <= u8Max; });
if (!valid) {
cerr << "Incorrect value for retrieved array control"
<< endl;
return TestFail;
}
/* Test setting controls. */
ctrls.set(V4L2_CID_BRIGHTNESS, brightness.min());
ctrls.set(V4L2_CID_CONTRAST, contrast.max());
ctrls.set(V4L2_CID_SATURATION, saturation.min());
std::array<uint8_t, VIVID_CID_U8_ARRAY_SIZE> u8Values;
std::fill(u8Values.begin(), u8Values.end(), u8.min().get<uint8_t>());
ctrls.set(VIVID_CID_U8_4D_ARRAY, Span<const uint8_t>(u8Values));
int ret = capture_->setControls(&ctrls);
if (ret) {
cerr << "Failed to set controls" << endl;
return TestFail;
}
/* Test setting controls outside of range. */
ctrls.set(V4L2_CID_BRIGHTNESS, brightness.min().get<int32_t>() - 1);
ctrls.set(V4L2_CID_CONTRAST, contrast.max().get<int32_t>() + 1);
ctrls.set(V4L2_CID_SATURATION, saturation.min().get<int32_t>() + 1);
ret = capture_->setControls(&ctrls);
if (ret) {
cerr << "Failed to set controls (out of range)" << endl;
return TestFail;
}
if (ctrls.get(V4L2_CID_BRIGHTNESS) != brightness.min() ||
ctrls.get(V4L2_CID_CONTRAST) != contrast.max() ||
ctrls.get(V4L2_CID_SATURATION) != saturation.min().get<int32_t>() + 1) {
cerr << "Controls not updated when set" << endl;
return TestFail;
}
return TestPass;
}
};
TEST_REGISTER(V4L2ControlTest)
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