mirror of
https://github.com/f4exb/sdrangel.git
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374 lines
12 KiB
C++
374 lines
12 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015-2018 Edouard Griffiths, F4EXB. //
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// Copyright (C) 2021 Jon Beniston, M7RCE //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <algorithm>
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#include <QTime>
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#include <QDebug>
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#include "aptdemod.h"
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#include "aptdemodimageworker.h"
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MESSAGE_CLASS_DEFINITION(APTDemodImageWorker::MsgConfigureAPTDemodImageWorker, Message)
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MESSAGE_CLASS_DEFINITION(APTDemodImageWorker::MsgSaveImageToDisk, Message)
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APTDemodImageWorker::APTDemodImageWorker() :
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m_messageQueueToGUI(nullptr),
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m_running(false),
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m_mutex(QMutex::Recursive)
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{
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for (int y = 0; y < APT_MAX_HEIGHT; y++)
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{
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m_image.prow[y] = new float[APT_PROW_WIDTH];
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m_tempImage.prow[y] = new float[APT_PROW_WIDTH];
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}
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resetDecoder();
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}
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APTDemodImageWorker::~APTDemodImageWorker()
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{
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m_inputMessageQueue.clear();
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for (int y = 0; y < APT_MAX_HEIGHT; y++)
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{
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delete[] m_image.prow[y];
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delete[] m_tempImage.prow[y];
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}
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}
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void APTDemodImageWorker::reset()
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{
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QMutexLocker mutexLocker(&m_mutex);
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m_inputMessageQueue.clear();
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}
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void APTDemodImageWorker::startWork()
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{
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QMutexLocker mutexLocker(&m_mutex);
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connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
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m_running = true;
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}
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void APTDemodImageWorker::stopWork()
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{
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QMutexLocker mutexLocker(&m_mutex);
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disconnect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
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m_running = false;
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}
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void APTDemodImageWorker::handleInputMessages()
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{
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Message* message;
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while ((message = m_inputMessageQueue.pop()) != nullptr)
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{
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if (handleMessage(*message)) {
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delete message;
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}
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}
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}
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bool APTDemodImageWorker::handleMessage(const Message& cmd)
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{
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if (MsgConfigureAPTDemodImageWorker::match(cmd))
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{
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QMutexLocker mutexLocker(&m_mutex);
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MsgConfigureAPTDemodImageWorker& cfg = (MsgConfigureAPTDemodImageWorker&) cmd;
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qDebug("APTDemodImageWorker::handleMessage: MsgConfigureAPTDemodImageWorker");
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applySettings(cfg.getSettings(), cfg.getForce());
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return true;
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}
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else if (MsgSaveImageToDisk::match(cmd))
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{
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saveImageToDisk();
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return true;
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}
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else if (APTDemod::MsgPixels::match(cmd))
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{
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QMutexLocker mutexLocker(&m_mutex);
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const APTDemod::MsgPixels& pixelsMsg = (APTDemod::MsgPixels&) cmd;
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const float *pixels = pixelsMsg.getPixels();
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processPixels(pixels);
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delete[] pixels;
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return true;
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}
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else if (APTDemod::MsgResetDecoder::match(cmd))
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{
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resetDecoder();
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return true;
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}
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else
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{
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return false;
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}
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}
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void APTDemodImageWorker::applySettings(const APTDemodSettings& settings, bool force)
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{
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(void) force;
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bool callProcessImage = false;
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if ((settings.m_cropNoise != m_settings.m_cropNoise) ||
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(settings.m_denoise != m_settings.m_denoise) ||
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(settings.m_linearEqualise != m_settings.m_linearEqualise) ||
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(settings.m_histogramEqualise != m_settings.m_histogramEqualise) ||
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(settings.m_precipitationOverlay != m_settings.m_precipitationOverlay) ||
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(settings.m_flip != m_settings.m_flip) ||
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(settings.m_channels != m_settings.m_channels))
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{
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// Call after settings have been applied
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callProcessImage = true;
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}
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m_settings = settings;
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if (callProcessImage) {
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sendImageToGUI();
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}
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}
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void APTDemodImageWorker::resetDecoder()
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{
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m_image.nrow = 0;
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m_tempImage.nrow = 0;
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m_greyImage = QImage(APT_IMG_WIDTH, APT_MAX_HEIGHT, QImage::Format_Grayscale8);
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m_greyImage.fill(0);
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m_colourImage = QImage(APT_IMG_WIDTH, APT_MAX_HEIGHT, QImage::Format_RGB888);
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m_colourImage.fill(0);
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m_satelliteName = "";
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}
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void APTDemodImageWorker::processPixels(const float *pixels)
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{
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std::copy(pixels, pixels + APT_PROW_WIDTH, m_image.prow[m_image.nrow]);
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if (m_image.nrow % 20 == 0) { // send full image only every 20 lines
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sendImageToGUI();
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} else { // else send unprocessed line just to show stg is moving
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sendLineToGUI();
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}
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m_image.nrow++;
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}
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void APTDemodImageWorker::sendImageToGUI()
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{
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// Send image to GUI
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if (m_messageQueueToGUI)
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{
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QStringList imageTypes;
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QImage image = processImage(imageTypes);
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m_messageQueueToGUI->push(APTDemod::MsgImage::create(image, imageTypes, m_satelliteName));
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}
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}
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void APTDemodImageWorker::sendLineToGUI()
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{
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if (m_messageQueueToGUI)
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{
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float *pixels = m_image.prow[m_image.nrow];
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uchar *line;
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APTDemod::MsgLine *msg = APTDemod::MsgLine::create(&line);
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if (m_settings.m_channels == APTDemodSettings::BOTH_CHANNELS)
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{
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for (int i = 0; i < APT_IMG_WIDTH; i++) {
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line[i] = roundAndClip(pixels[i]);
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}
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msg->setSize(APT_IMG_WIDTH);
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}
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else if (m_settings.m_channels == APTDemodSettings::CHANNEL_A)
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{
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for (int i = 0; i < APT_CH_WIDTH; i++) {
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line[i] = roundAndClip(pixels[i + APT_CHA_OFFSET]);
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}
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msg->setSize(APT_CH_WIDTH);
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}
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else
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{
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for (int i = 0; i < APT_CH_WIDTH; i++) {
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line[i] = roundAndClip(pixels[i + APT_CHB_OFFSET]);
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}
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msg->setSize(APT_CH_WIDTH);
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}
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m_messageQueueToGUI->push(msg);
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}
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}
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QImage APTDemodImageWorker::processImage(QStringList& imageTypes)
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{
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copyImage(&m_tempImage, &m_image);
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// Calibrate channels according to wavelength
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if (m_tempImage.nrow >= APT_CALIBRATION_ROWS)
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{
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m_tempImage.chA = apt_calibrate(m_tempImage.prow, m_tempImage.nrow, APT_CHA_OFFSET, APT_CH_WIDTH);
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m_tempImage.chB = apt_calibrate(m_tempImage.prow, m_tempImage.nrow, APT_CHB_OFFSET, APT_CH_WIDTH);
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QStringList channelTypes({
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"", // Unknown
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"Visible (0.58-0.68 um)",
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"Near-IR (0.725-1.0 um)",
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"Near-IR (1.58-1.64 um)",
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"Mid-infrared (3.55-3.93 um)",
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"Thermal-infrared (10.3-11.3 um)",
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"Thermal-infrared (11.5-12.5 um)"
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});
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imageTypes.append(channelTypes[m_tempImage.chA]);
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imageTypes.append(channelTypes[m_tempImage.chB]);
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}
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// Crop noise due to low elevation at top and bottom of image
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if (m_settings.m_cropNoise)
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m_tempImage.zenith -= apt_cropNoise(&m_tempImage);
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// Denoise filter
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if (m_settings.m_denoise)
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{
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apt_denoise(m_tempImage.prow, m_tempImage.nrow, APT_CHA_OFFSET, APT_CH_WIDTH);
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apt_denoise(m_tempImage.prow, m_tempImage.nrow, APT_CHB_OFFSET, APT_CH_WIDTH);
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}
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// Flip image if satellite pass is North to South
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if (m_settings.m_flip)
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{
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apt_flipImage(&m_tempImage, APT_CH_WIDTH, APT_CHA_OFFSET);
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apt_flipImage(&m_tempImage, APT_CH_WIDTH, APT_CHB_OFFSET);
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}
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// Linear equalise to improve contrast
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if (m_settings.m_linearEqualise)
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{
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apt_linearEnhance(m_tempImage.prow, m_tempImage.nrow, APT_CHA_OFFSET, APT_CH_WIDTH);
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apt_linearEnhance(m_tempImage.prow, m_tempImage.nrow, APT_CHB_OFFSET, APT_CH_WIDTH);
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}
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// Histogram equalise to improve contrast
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if (m_settings.m_histogramEqualise)
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{
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apt_histogramEqualise(m_tempImage.prow, m_tempImage.nrow, APT_CHA_OFFSET, APT_CH_WIDTH);
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apt_histogramEqualise(m_tempImage.prow, m_tempImage.nrow, APT_CHB_OFFSET, APT_CH_WIDTH);
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}
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if (m_settings.m_precipitationOverlay)
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{
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// Overlay precipitation
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for (int r = 0; r < m_tempImage.nrow; r++)
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{
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uchar *l = m_colourImage.scanLine(r);
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for (int i = 0; i < APT_IMG_WIDTH; i++)
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{
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float p = m_tempImage.prow[r][i];
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if ((i >= APT_CHB_OFFSET) && (i < APT_CHB_OFFSET + APT_CH_WIDTH) && (p >= 198))
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{
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apt_rgb_t rgb = apt_applyPalette(apt_PrecipPalette, p - 198);
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// Negative float values get converted to positive uchars here
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l[i*3] = (uchar)rgb.r;
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l[i*3+1] = (uchar)rgb.g;
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l[i*3+2] = (uchar)rgb.b;
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int a = i - APT_CHB_OFFSET + APT_CHA_OFFSET;
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l[a*3] = (uchar)rgb.r;
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l[a*3+1] = (uchar)rgb.g;
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l[a*3+2] = (uchar)rgb.b;
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}
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else
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{
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uchar q = roundAndClip(p);
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l[i*3] = q;
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l[i*3+1] = q;
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l[i*3+2] = q;
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}
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}
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}
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return extractImage(m_colourImage);
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}
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else
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{
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for (int r = 0; r < m_tempImage.nrow; r++)
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{
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uchar *l = m_greyImage.scanLine(r);
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for (int i = 0; i < APT_IMG_WIDTH; i++)
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{
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float p = m_tempImage.prow[r][i];
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l[i] = roundAndClip(p);
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}
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}
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return extractImage(m_greyImage);
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}
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}
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QImage APTDemodImageWorker::extractImage(QImage image)
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{
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if (m_settings.m_channels == APTDemodSettings::BOTH_CHANNELS) {
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return image.copy(0, 0, APT_IMG_WIDTH, m_tempImage.nrow);
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} else if (m_settings.m_channels == APTDemodSettings::CHANNEL_A) {
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return image.copy(APT_CHA_OFFSET, 0, APT_CH_WIDTH, m_tempImage.nrow);
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} else {
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return image.copy(APT_CHB_OFFSET, 0, APT_CH_WIDTH, m_tempImage.nrow);
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}
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}
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void APTDemodImageWorker::saveImageToDisk()
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{
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QStringList imageTypes;
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QImage image = processImage(imageTypes);
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if (image.height() >= m_settings.m_autoSaveMinScanLines)
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{
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QString filename;
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QDateTime datetime = QDateTime::currentDateTime();
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filename = QString("apt_%1_%2.png").arg(m_satelliteName).arg(datetime.toString("yyyyMMdd_hhmm"));
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if (!m_settings.m_autoSavePath.isEmpty())
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{
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if (m_settings.m_autoSavePath.endsWith('/')) {
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filename = m_settings.m_autoSavePath + filename;
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} else {
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filename = m_settings.m_autoSavePath + '/' + filename;
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}
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}
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if (!image.save(filename)) {
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qCritical() << "Failed to save APT image to: " << filename;
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}
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}
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}
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void APTDemodImageWorker::copyImage(apt_image_t *dst, apt_image_t *src)
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{
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dst->nrow = src->nrow;
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dst->zenith = src->zenith;
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dst->chA = src->chA;
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dst->chB = src->chB;
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for (int i = 0; i < src->nrow; i++) {
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std::copy(src->prow[i], src->prow[i] + APT_PROW_WIDTH, dst->prow[i]);
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}
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}
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uchar APTDemodImageWorker::roundAndClip(float p)
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{
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int q = (int) round(p);
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q = q > 255 ? 255 : q < 0 ? 0 : q;
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return q;
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}
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