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path: root/src/android/camera_ops.cpp
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * camera_ops.h - Android Camera HAL Operations
 */

#include "camera_ops.h"

#include <system/camera_metadata.h>

#include "camera_device.h"

using namespace libcamera;

/*
 * Translatation layer between the Android Camera HAL device operations and the
 * CameraDevice.
 */

static int hal_dev_initialize(const struct camera3_device *dev,
			      const camera3_callback_ops_t *callback_ops)
{
	if (!dev)
		return -EINVAL;

	CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
	camera->setCallbacks(callback_ops);

	return 0;
}

static int hal_dev_configure_streams(const struct camera3_device *dev,
				     camera3_stream_configuration_t *stream_list)
{
	if (!dev)
		return -EINVAL;

	CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
	return camera->configureStreams(stream_list);
}

static const camera_metadata_t *
hal_dev_construct_default_request_settings(const struct camera3_device *dev,
					   int type)
{
	if (!dev)
		return nullptr;

	CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
	return camera->constructDefaultRequestSettings(type);
}

static int hal_dev_process_capture_request(const struct camera3_device *dev,
					   camera3_capture_request_t *request)
{
	if (!dev)
		return -EINVAL;

	CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
	return camera->processCaptureRequest(request);
}

static void hal_dev_dump(const struct camera3_device *dev, int fd)
{
}

static int hal_dev_flush(const struct camera3_device *dev)
{
	return 0;
}

int hal_dev_close(hw_device_t *hw_device)
{
	if (!hw_device)
		return -EINVAL;

	camera3_device_t *dev = reinterpret_cast<camera3_device_t *>(hw_device);
	CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);

	camera->close();

	return 0;
}

camera3_device_ops hal_dev_ops = {
	.initialize = hal_dev_initialize,
	.configure_streams = hal_dev_configure_streams,
	.register_stream_buffers = nullptr,
	.construct_default_request_settings = hal_dev_construct_default_request_settings,
	.process_capture_request = hal_dev_process_capture_request,
	.get_metadata_vendor_tag_ops = nullptr,
	.dump = hal_dev_dump,
	.flush = hal_dev_flush,
	.reserved = { nullptr },
};
lass="hl kwc">ViewFinder::nativeFormats() const { static const QList<libcamera::PixelFormat> formats = ::nativeFormats.keys(); return formats; } int ViewFinder::setFormat(const libcamera::PixelFormat &format, const QSize &size) { image_ = QImage(); /* * If format conversion is needed, configure the converter and allocate * the destination image. */ if (!::nativeFormats.contains(format)) { int ret = converter_.configure(format, size); if (ret < 0) return ret; image_ = QImage(size, QImage::Format_RGB32); qInfo() << "Using software format conversion from" << format.toString().c_str(); } else { qInfo() << "Zero-copy enabled"; } format_ = format; size_ = size; updateGeometry(); return 0; } void ViewFinder::render(libcamera::FrameBuffer *buffer, MappedBuffer *map) { if (buffer->planes().size() != 1) { qWarning() << "Multi-planar buffers are not supported"; return; } unsigned char *memory = static_cast<unsigned char *>(map->memory); size_t size = buffer->metadata().planes[0].bytesused; { QMutexLocker locker(&mutex_); if (::nativeFormats.contains(format_)) { /* * If the frame format is identical to the display * format, create a QImage that references the frame * and store a reference to the frame buffer. The * previously stored frame buffer, if any, will be * released. * * \todo Get the stride from the buffer instead of * computing it naively */ image_ = QImage(memory, size_.width(), size_.height(), size / size_.height(), ::nativeFormats[format_]); std::swap(buffer, buffer_); } else { /* * Otherwise, convert the format and release the frame * buffer immediately. */ converter_.convert(memory, size, &image_); } } update(); if (buffer) renderComplete(buffer); } void ViewFinder::stop() { image_ = QImage(); if (buffer_) { renderComplete(buffer_); buffer_ = nullptr; } update(); } QImage ViewFinder::getCurrentImage() { QMutexLocker locker(&mutex_); return image_.copy(); } void ViewFinder::paintEvent(QPaintEvent *) { QPainter painter(this); /* If we have an image, draw it. */ if (!image_.isNull()) { painter.drawImage(rect(), image_, image_.rect()); return; } /* * Otherwise, draw the camera stopped icon. Render it to the pixmap if * the size has changed. */ constexpr int margin = 20; if (vfSize_ != size() || pixmap_.isNull()) { QSize vfSize = size() - QSize{ 2 * margin, 2 * margin }; QSize pixmapSize{ 1, 1 }; pixmapSize.scale(vfSize, Qt::KeepAspectRatio); pixmap_ = icon_.pixmap(pixmapSize); vfSize_ = size(); } QPoint point{ margin, margin }; if (pixmap_.width() < width() - 2 * margin) point.setX((width() - pixmap_.width()) / 2); else point.setY((height() - pixmap_.height()) / 2); painter.setBackgroundMode(Qt::OpaqueMode); painter.drawPixmap(point, pixmap_); } QSize ViewFinder::sizeHint() const { return size_.isValid() ? size_ : QSize(640, 480); }