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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* capture.cpp - Cam capture
*/
#include <iomanip>
#include <iostream>
#include <limits.h>
#include <sstream>
#include "capture.h"
#include "main.h"
using namespace libcamera;
Capture::Capture(std::shared_ptr<Camera> camera, CameraConfiguration *config,
EventLoop *loop)
: camera_(camera), config_(config), writer_(nullptr), last_(0), loop_(loop),
queueCount_(0), captureCount_(0), captureLimit_(0)
{
}
int Capture::run(const OptionsParser::Options &options)
{
int ret;
queueCount_ = 0;
captureCount_ = 0;
captureLimit_ = options[OptCapture].toInteger();
if (!camera_) {
std::cout << "Can't capture without a camera" << std::endl;
return -ENODEV;
}
ret = camera_->configure(config_);
if (ret < 0) {
std::cout << "Failed to configure camera" << std::endl;
return ret;
}
streamName_.clear();
for (unsigned int index = 0; index < config_->size(); ++index) {
StreamConfiguration &cfg = config_->at(index);
streamName_[cfg.stream()] = "stream" + std::to_string(index);
}
camera_->requestCompleted.connect(this, &Capture::requestComplete);
if (options.isSet(OptFile)) {
if (!options[OptFile].toString().empty())
writer_ = new BufferWriter(options[OptFile]);
else
writer_ = new BufferWriter();
}
FrameBufferAllocator *allocator = new FrameBufferAllocator(camera_);
ret = capture(allocator);
if (options.isSet(OptFile)) {
delete writer_;
writer_ = nullptr;
}
requests_.clear();
delete allocator;
return ret;
}
int Capture::capture(FrameBufferAllocator *allocator)
{
description: Maximum allowed value (place any new values above here).
# AeExposureMode needs further attention:
# - Auto-generate max enum value.
# - Better handling of custom types.
- AeExposureMode:
type: int32_t
= allocator->allocate(cfg.stream());
if (ret < 0) {
std::cerr << "Can't allocate buffers" << std::endl;
return -ENOMEM;
}
unsigned int allocated = allocator->buffers(cfg.stream()).size();
nbuffers = std::min(nbuffers, allocated);
}
/*
* TODO: make cam tool smarter to support still capture by for
* example pushing a button. For now run all streams all the time.
*/
for (unsigned int i = 0; i < nbuffers; i++) {
std::unique_ptr<Request> request = camera_->createRequest();
if (!request) {
std::cerr << "Can't create request" << std::endl;
return -ENOMEM;
}
for (StreamConfiguration &cfg : *config_) {
Stream *stream = cfg.stream();
const std::vector<std::unique_ptr<FrameBuffer>> &buffers =
allocator->buffers(stream);
const std::unique_ptr<FrameBuffer> &buffer = buffers[i];
ret = request->addBuffer(stream, buffer.get());
if (ret < 0) {
std::cerr << "Can't set buffer for request"
<< std::endl;
return ret;
}
if (writer_)
writer_->mapBuffer(buffer.get());
}
requests_.push_back(std::move(request));
}
ret = camera_->start();
if (ret) {
std::cout << "Failed to start capture" << std::endl;
return ret;
}
for (std::unique_ptr<Request> &request : requests_) {
ret = queueRequest(request.get());
if (ret < 0) {
std::cerr << "Can't queue request" << std::endl;
camera_->stop();
return ret;
}
}
if (captureLimit_)
std::cout << "Capture " << captureLimit_ << " frames" << std::endl;
else
std::cout << "Capture until user interrupts by SIGINT" << std::endl;
ret = loop_->exec();
if (ret)
std::cout << "Failed to run capture loop" << std::endl;
ret = camera_->stop();
if (ret)
std::cout << "Failed to stop capture" << std::endl;
return ret;
}
int Capture::queueRequest(Request *request)
{
if (captureLimit_ && queueCount_ >= captureLimit_)
return 0;
queueCount_++;
return camera_->queueRequest(request);
}
void Capture::requestComplete(Request *request)
{
if (request->status, and shall be 0.0 unless the camera can't
disable sharpening completely. The default value shall give a
"reasonable" level of sharpening, suitable for most use cases.
The maximum value may apply extremely high levels of sharpening,
higher than anyone could reasonably want. Negative values are
not allowed. Note also that sharpening is not applied to raw
streams.
- FocusFoM:
type: int32_t
description: |
Reports a Figure of Merit (FoM) to indicate how in-focus the frame is.
A larger FocusFoM value indicates a more in-focus frame. This control
depends on the IPA to gather ISP statistics from the defined focus
region, and combine them in a suitable way to generate a FocusFoM value.
In this respect, it is not necessarily aimed at providing a way to
implement a focus algorithm by the application, rather an indication of
how in-focus a frame is.
- ColourCorrectionMatrix:
type: float
description: |
The 3x3 matrix that converts camera RGB to sRGB within the
imaging pipeline. This should describe the matrix that is used
after pixels have been white-balanced, but before any gamma
transformation. The 3x3 matrix is stored in conventional reading
order in an array of 9 floating point values.
size: [3x3]
...
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