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7b6eb9c21b
* Integration of libresvg SVG library (optional during build) * Major refactor of max_width and max_height for preview optimization * Fixed many bugs related to preview resizing, with regards to cached frames * Updating gitlab CI to find RESVGDIR correctly for windows, and adding svgz support * Updating cmake findresvg module to search for windows locations first, to prevent an issue on our windows builders and updating some CMake output. * Removing folder path from resvg header, since it could be installed in different named folders. This is an attempt to fix Windows include issues. * Making call to AV_FREE_FRAME conditional for non windows systems (because it crashes on Windows for seemingly no reason). Needs more investigation.
115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
/**
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* @file
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* @brief Header file for QtImageReader class
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* @author Jonathan Thomas <jonathan@openshot.org>
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*
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* @section LICENSE
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*
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* Copyright (c) 2008-2014 OpenShot Studios, LLC
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* <http://www.openshotstudios.com/>. This file is part of
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* OpenShot Library (libopenshot), an open-source project dedicated to
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* delivering high quality video editing and animation solutions to the
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* world. For more information visit <http://www.openshot.org/>.
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*
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* OpenShot Library (libopenshot) is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* OpenShot Library (libopenshot) is distributed in the hope that it will be
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* useful, 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPENSHOT_QIMAGE_READER_H
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#define OPENSHOT_QIMAGE_READER_H
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#include <cmath>
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#include <ctime>
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#include <iostream>
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#include <omp.h>
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#include <stdio.h>
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#include <memory>
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#include "Exceptions.h"
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#include "ReaderBase.h"
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using namespace std;
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namespace openshot
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{
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/**
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* @brief This class uses the Qt library, to open image files, and return
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* openshot::Frame objects containing the image.
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*
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* @code
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* // Create a reader for a video
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* QtImageReader r("MyAwesomeImage.jpeg");
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* r.Open(); // Open the reader
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*
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* // Get frame number 1 from the video
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* std::shared_ptr<Frame> f = r.GetFrame(1);
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*
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* // Now that we have an openshot::Frame object, lets have some fun!
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* f->Display(); // Display the frame on the screen
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*
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* // Close the reader
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* r.Close();
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* @endcode
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*/
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class QtImageReader : public ReaderBase
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{
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private:
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string path;
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std::shared_ptr<QImage> image; ///> Original image (full quality)
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std::shared_ptr<QImage> cached_image; ///> Scaled for performance
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bool is_open;
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public:
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/// Constructor for QtImageReader. This automatically opens the media file and loads
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/// frame 1, or it throws one of the following exceptions.
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QtImageReader(string path);
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/// Constructor for QtImageReader. This only opens the media file to inspect it's properties
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/// if inspect_reader=true. When not inspecting the media file, it's much faster, and useful
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/// when you are inflating the object using JSON after instantiating it.
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QtImageReader(string path, bool inspect_reader);
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/// Close File
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void Close();
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/// Get the cache object used by this reader (always returns NULL for this object)
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CacheMemory* GetCache() { return NULL; };
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/// Get an openshot::Frame object for a specific frame number of this reader. All numbers
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/// return the same Frame, since they all share the same image data.
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///
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/// @returns The requested frame (containing the image)
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/// @param requested_frame The frame number that is requested.
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std::shared_ptr<Frame> GetFrame(int64_t requested_frame);
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/// Determine if reader is open or closed
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bool IsOpen() { return is_open; };
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/// Return the type name of the class
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string Name() { return "QtImageReader"; };
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/// Get and Set JSON methods
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string Json(); ///< Generate JSON string of this object
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void SetJson(string value); ///< Load JSON string into this object
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Json::Value JsonValue(); ///< Generate Json::JsonValue for this object
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void SetJsonValue(Json::Value root); ///< Load Json::JsonValue into this object
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/// Open File - which is called by the constructor automatically
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void Open();
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};
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}
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#endif
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