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authorHirokazu Honda <hiroh@chromium.org>2021-04-03 22:10:14 +0900
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-04-04 04:02:18 +0300
commitac209efabf44827eb73f7f4d8baaffa9c1a58665 (patch)
tree3528b622e062182f4a7f2d9365df0d9d9fafb830 /.clang-tidy
parent4ae2a75200e0062ecade3634c43d5d6266fc179f (diff)
android: CameraDevice: Log rotation variables in camera3_stream
|rotation| and |crop_rotate_scale_degrees| are important info of a configuration. They should be logged. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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generated by cgit v1.2.1 (git 2.18.0) at 2024-12-20 20:27:14 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * stream.cpp - Video stream for a Camera
 */

#include <libcamera/stream.h>

#include <algorithm>
#include <array>
#include <climits>
#include <iomanip>
#include <sstream>

#include "log.h"

/**
 * \file stream.h
 * \brief Video stream for a Camera
 *
 * A camera device can provide frames in different resolutions and formats
 * concurrently from a single image source. The Stream class represents
 * one of the multiple concurrent streams.
 *
 * All streams exposed by a camera device share the same image source and are
 * thus not fully independent. Parameters related to the image source, such as
 * the exposure time or flash control, are common to all streams. Other
 * parameters, such as format or resolution, may be specified per-stream,
 * depending on the capabilities of the camera device.
 *
 * Camera devices expose at least one stream, and may expose additional streams
 * based on the device capabilities. This can be used, for instance, to
 * implement concurrent viewfinder and video capture, or concurrent viewfinder,
 * video capture and still image capture.
 */

namespace libcamera {

LOG_DEFINE_CATEGORY(Stream)

/**
 * \class StreamFormats
 * \brief Hold information about supported stream formats
 *
 * The StreamFormats class holds information about the pixel formats and frame
 * sizes a stream supports. The class groups size information by the pixel
 * format which can produce it.
 *
 * There are two ways to examine the size information, as a range or as a list
 * of discrete sizes. When sizes are viewed as a range it describes the minimum
 * and maximum width and height values. The range description can include
 * horizontal and vertical steps.
 *
 * When sizes are viewed as a list of discrete sizes they describe the exact
 * dimensions which can be selected and used.
 *
 * Pipeline handlers can create StreamFormats describing each pixel format using
 * either a range or a list of discrete sizes. The StreamFormats class attempts
 * to translate between the two different ways to view them. The translations
 * are performed as:
 *
 *  - If the StreamFormat is constructed using a list of discrete image sizes
 *    and a range is requested, it gets created by taking the minimum and
 *    maximum width/height in the list. The step information is not recreated
 *    and is set to 0 to indicate the range is generated.
 *
 *  - If the image sizes used to construct a StreamFormat are expressed as a
 *    range and a list of discrete sizes is requested, one which fits inside
 *    that range are selected from a list of common sizes. The step information
 *    is taken into consideration when generating the sizes.
 *