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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2020-2021, Google Inc.
*
* Simple capture helper
*/
#include "capture.h"
#include <assert.h>
#include <gtest/gtest.h>
using namespace libcamera;
Capture::Capture(std::shared_ptr<Camera> camera)
: camera_(std::move(camera)), allocator_(camera_)
{
}
Capture::~Capture()
{
stop();
}
void Capture::configure(libcamera::Span<const libcamera::StreamRole> roles)
{
assert(!roles.empty());
config_ = camera_->generateConfiguration(roles);
if (!config_)
GTEST_SKIP() << "Roles not supported by camera";
ASSERT_EQ(config_->size(), roles.size()) << "Unexpected number of streams in configuration";
/*
* Set the buffers count to the largest value across all streams.
* \todo: Should all streams from a Camera have the same buffer count ?
*/
auto largest =
std::max_element(config_->begin(), config_->end(),
[](const StreamConfiguration &l, const StreamConfiguration &r)
{ return l.bufferCount < r.bufferCount; });
assert(largest != config_->end());
for (auto &cfg : *config_)
cfg.bufferCount = largest->bufferCount;
if (config_->validate() != CameraConfiguration::Valid) {
config_.reset();
FAIL() << "Configuration not valid";
}
if (camera_->configure(config_.get())) {
config_.reset();
FAIL() << "Failed to configure camera";
}
}
void Capture::run(unsigned int captureLimit, std::optional<unsigned int> queueLimit)
{
assert(!queueLimit || captureLimit <= *queueLimit);
captureLimit_ = captureLimit;
queueLimit_ = queueLimit;
captureCount_ = queueCount_ = 0;
EventLoop loop;
loop_ = &loop;
start();
for (const auto &request : requests_)
queueRequest(request.get());
EXPECT_EQ(loop_->exec(), 0);
stop();
EXPECT_LE(captureLimit_, captureCount_);
EXPECT_LE(captureCount_, queueCount_);
EXPECT_TRUE(!queueLimit_ || queueCount_ <= *queueLimit_);
}
int Capture::queueRequest(libcamera::Request *request)
{
if (queueLimit_ && queueCount_ >= *queueLimit_)
return 0;
int ret = camera_->queueRequest(request);
if (ret < 0)
return ret;
queueCount_ += 1;
return 0;
}
void Capture::requestComplete(Request *request)
{
captureCount_++;
if (captureCount_ >= captureLimit_) {
loop_->exit(0);
return;
}
EXPECT_EQ(request->status(), Request::Status::RequestComplete)
<< "Request didn't complete successfully";
request->reuse(Request::ReuseBuffers);
if (queueRequest(request))
loop_->exit(-EINVAL);
}
void Capture::start()
{
assert(config_);
assert(!config_->empty());
assert(!allocator_.allocated());
assert(requests_.empty());
const auto bufferCount = config_->at(0).bufferCount;
/* No point in testing less requests then the camera depth. */
if (queueLimit_ && *queueLimit_ < bufferCount) {
GTEST_SKIP() << "Camera needs " << bufferCount
<< " requests, can't test only " << *queueLimit_;
}
for (std::size_t i = 0; i < bufferCount; i++) {
std::unique_ptr<Request> request = camera_->createRequest();
ASSERT_TRUE(request) << "Can't create request";
requests_.push_back(std::move(request));
}
for (const auto &cfg : *config_) {
Stream *stream = cfg.stream();
int count = allocator_.allocate(stream);
ASSERT_GE(count, 0) << "Failed to allocate buffers";
const auto &buffers = allocator_.buffers(stream);
ASSERT_EQ(buffers.size(), bufferCount) << "Mismatching buffer count";
for (std::size_t i = 0; i < bufferCount; i++) {
ASSERT_EQ(requests_[i]->addBuffer(stream, buffers[i].get()), 0)
<< "Failed to add buffer to request";
}
}
ASSERT_TRUE(allocator_.allocated());
camera_->requestCompleted.connect(this, &Capture::requestComplete);
ASSERT_EQ(camera_->start(), 0) << "Failed to start camera";
}
void Capture::stop()
{
if (!config_ || !allocator_.allocated())
return;
camera_->stop();
camera_->requestCompleted.disconnect(this);
requests_.clear();
for (const auto &cfg : *config_) {
EXPECT_EQ(allocator_.free(cfg.stream()), 0)
<< "Failed to free buffers associated with stream";
}
EXPECT_FALSE(allocator_.allocated());
}
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