6787c53c9b
File browser thumbnails for raw images start with a minimally-processed
images. These images are cached and image adjustments are applied on
top. The black level is "baked-into" the cached image. Therefore, to
reflect the black level adjustments in the thumbnail, one of two options
are required:
1. Cache an image before the black level is applied and process the
black level on top of this image.
2. Recreate the base image with the new black level and cache it.
The first option yields better performance when the user changes the
black level. However, it requires other base adjustments to be applied
every time, such as the camera multipliers. The second option requires
the base image to be recreated every time the black level is changed.
This commit implements the second option. It minimizes code changes, and
therefore possible bugs. It does add a performance penalty when the
black level changes, but the black level adjustment is rarely used.
115 lines
2.8 KiB
C++
115 lines
2.8 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
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*
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* RawTherapee 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, either version 3 of the License, or
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* (at your option) any later version.
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*
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* RawTherapee 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 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 RawTherapee. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <glib.h>
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#include "../rtengine/noncopyable.h"
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namespace rtengine
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{
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class IImage8;
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namespace procparams
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{
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struct CropParams;
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}
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}
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class ThumbBrowserEntryBase;
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class ThumbImageUpdateListener
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{
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public:
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virtual ~ThumbImageUpdateListener() = default;
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/**
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* @brief Called when thumbnail image is update
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*
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* @param img new thumbnail image
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* @param scale scale (??)
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* @param cropParams how it was cropped (??)
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*
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* @note no locks are held when called back
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*/
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virtual void updateImage(rtengine::IImage8* img, double scale, const rtengine::procparams::CropParams& cropParams) = 0;
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};
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class ThumbImageUpdater :
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public rtengine::NonCopyable
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{
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public:
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/**
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* @brief Singleton entry point.
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*
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* @return Pointer to thumbnail image updater.
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*/
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static ThumbImageUpdater* getInstance(void);
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/**
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* @brief Add an thumbnail image update request.
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*
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* Code will add the request to the queue and, if needed, start a pool
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* thread to process it.
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*
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* @param t thumbnail
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* @param params processing params (?)
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* @param height how big
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* @param priority if \c true then run as soon as possible
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* @param l listener waiting on update
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*/
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void add(ThumbBrowserEntryBase* tbe, bool* priority, bool upgrade, bool forceUpgrade, ThumbImageUpdateListener* l);
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/**
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* @brief Remove jobs associated with listener \c l.
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*
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* Jobs being processed will be finished. Will not return till all jobs for
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* \c l have been completed.
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*
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* @param listener jobs associated with this will be stopped
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*/
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void removeJobs(ThumbImageUpdateListener* listener);
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/**
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* @brief Stop processing and remove all jobs.
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*
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* Will not return till all running jobs have completed.
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*/
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void removeAllJobs(void);
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private:
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ThumbImageUpdater();
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~ThumbImageUpdater();
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class Impl;
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Impl* impl_;
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};
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/**
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* @brief Singleton boiler plate.
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*
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* To use: \c thumbImageUpdater->start() ,
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*/
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#define thumbImageUpdater ThumbImageUpdater::getInstance()
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