libcamera/libcamera.git - libcamera official repository

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author	Jacopo Mondi <jacopo.mondi@ideasonboard.com>	2023-10-19 16:01:27 +0200
committer	Laurent Pinchart <laurent.pinchart@ideasonboard.com>	2023-10-23 16:05:59 +0300
commit	b54c935dd764ac3348bcedb9ff67d53a26cfaceb (patch)
tree	ce558e390a37d6a92cde7c77d60f8387f0a4b053 /src/apps/cam
parent	250577878bff825516ea5a942aea1b3339acb15c (diff)

libcamera: transform: Invert operator*() operands

The current definition of operator*(Transform t1, Transform t0) follows the function composition notion, where t0 is applied first then t1 is applied last. In order to introduce operator*(Orientation, Transform) where a Transform is applied on top of an Orientation, invert the operand order of operator*(Transform, Transform) so that usage of operator* with both Orientation and Transform can be made associative. For example: Orientation o; Transform t = t1 * t2 Orientation o1 = o * t = o * (t1 * t2) = (o * t1) * t2 = o * t1 * t2 Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

Diffstat (limited to 'src/apps/cam')

0 files changed, 0 insertions, 0 deletions

/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2018-2019, Google Inc. * * media_device_print_test.cpp - Print out media devices */ #include <iostream> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include "media_device.h" #include "test.h" using namespace libcamera; using namespace std; /* * MediaDevicePrintTest takes all media devices found in the system and print * them out to verify correctness. * * If no accessible media device is found, the test is skipped. */ class MediaDevicePrintTest : public Test { public: MediaDevicePrintTest() { } ~MediaDevicePrintTest() { } protected: int init() { return 0; } int run(); void cleanup() { } private: int testMediaDevice(string deviceNode); void printMediaGraph(const MediaDevice &media, ostream &os); void printLinkFlags(const MediaLink *link, ostream &os); void printNode(const MediaPad *pad, ostream &os); }; void MediaDevicePrintTest::printNode(const MediaPad *pad, ostream &os) { const MediaEntity *entity = pad->entity(); os << "\"" << entity->name() << "\"[" << pad->index() << "]"; } void MediaDevicePrintTest::printLinkFlags(const MediaLink *link, ostream &os) { unsigned int flags = link->flags(); os << " ["; if (flags) { os << (flags & MEDIA_LNK_FL_ENABLED ? "ENABLED," : "") << (flags & MEDIA_LNK_FL_IMMUTABLE ? "IMMUTABLE" : ""); } os << "]\n"; } /* * For each entity in the media graph, printout links directed to its sinks * and source pads. */ void MediaDevicePrintTest::printMediaGraph(const MediaDevice &media, ostream &os) { os << "\n" << media.driver() << " - " << media.deviceNode() << "\n\n"; for (auto const &entity : media.entities()) { os << "\"" << entity->name() << "\"\n"; for (auto const &sink : entity->pads()) { if (!(sink->flags() & MEDIA_PAD_FL_SINK)) continue; os << " [" << sink->index() << "]" << ": Sink\n"; for (auto const &link : sink->links()) { os << "\t"; printNode(sink, os); os << " <- "; printNode(link->source(), os); printLinkFlags(link, os); } os << "\n"; } for (auto const &source : entity->pads()) { if (!(source->flags() & MEDIA_PAD_FL_SOURCE)) continue; os << " [" << source->index() << "]" << ": Source\n"; for (auto const &link : source->links()) { os << "\t"; printNode(source, os); os << " -> "; printNode(link->sink(), os); printLinkFlags(link, os); } os << "\n"; } } os.flush(); } /* Test a single media device. */ int MediaDevicePrintTest::testMediaDevice(const string deviceNode) { MediaDevice dev(deviceNode); int ret; ret = dev.populate(); if (ret) return ret; /* Print out the media graph. */ printMediaGraph(dev, cerr); return 0; } /* Run tests on all media devices. */ #define MAX_MEDIA_DEV 256 int MediaDevicePrintTest::run() { const string deviceNode("/dev/media"); unsigned int i; int ret = 77; /* skip test exit code */ /* * Run the test sequence on all media device found in the * system, if any. */ for (i = 0; i < MAX_MEDIA_DEV; i++) { string mediadev = deviceNode + to_string(i); struct stat pstat = { }; if (stat(mediadev.c_str(), &pstat)) continue; ret = testMediaDevice(mediadev); if (ret) return ret; } return ret; } TEST_REGISTER(MediaDevicePrintTest);


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