itsmattkc
3b224c7638
commit For testing the new iteration, the texture cache disk download was written into the main thread instead of into the separate threads. Now they're back in separate threads again. Also I think some of these files probably should have been in the previous commit.
157 lines
3.7 KiB
C++
157 lines
3.7 KiB
C++
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2019 Olive Team
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
***/
|
|
|
|
#ifndef VIDEORENDERERBACKEND_H
|
|
#define VIDEORENDERERBACKEND_H
|
|
|
|
#include <QLinkedList>
|
|
|
|
#include "node/output/viewer/viewer.h"
|
|
#include "renderbackend.h"
|
|
#include "render/pixelformat.h"
|
|
#include "render/rendermodes.h"
|
|
|
|
/**
|
|
* @brief A multithreaded OpenGL based renderer for node systems
|
|
*/
|
|
class VideoRenderBackend : public RenderBackend
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
/**
|
|
* @brief Renderer Constructor
|
|
*
|
|
* Constructing a Renderer object will not start any threads/backend on its own. Use Start() to do this and Stop()
|
|
* when the Renderer is about to be destroyed.
|
|
*/
|
|
VideoRenderBackend(QObject* parent = nullptr);
|
|
|
|
virtual ~VideoRenderBackend() override;
|
|
|
|
/**
|
|
* @brief Set parameters of the Renderer
|
|
*
|
|
* The Renderer owns the buffers that are used in the rendering process and this function sets the kind of buffers
|
|
* to use. The Renderer must be stopped when calling this function.
|
|
*
|
|
* @param width
|
|
*
|
|
* Buffer width
|
|
*
|
|
* @param height
|
|
*
|
|
* Buffer height
|
|
*
|
|
* @param format
|
|
*
|
|
* Buffer pixel format
|
|
*/
|
|
void SetParameters(const VideoRenderingParams ¶ms);
|
|
|
|
/**
|
|
* @brief Return whether a frame with this hash already exists
|
|
*/
|
|
bool HasHash(const QByteArray& hash);
|
|
|
|
/**
|
|
* @brief Return whether a frame is currently being cached
|
|
*/
|
|
bool IsCaching(const QByteArray& hash);
|
|
|
|
/**
|
|
* @brief Check if a frame is currently being cached, and if not reserve it
|
|
*/
|
|
bool TryCache(const QByteArray& hash);
|
|
|
|
public slots:
|
|
virtual void InvalidateCache(const rational &start_range, const rational &end_range) override;
|
|
|
|
protected:
|
|
/**
|
|
* @brief Allocate and start the multithreaded backend
|
|
*/
|
|
virtual bool InitInternal() override;
|
|
|
|
/**
|
|
* @brief Terminate and deallocate the multithreaded backend
|
|
*/
|
|
virtual void CloseInternal() override;
|
|
|
|
struct HashTimeMapping {
|
|
rational time;
|
|
QByteArray hash;
|
|
};
|
|
|
|
virtual void ViewerNodeChangedEvent(ViewerOutput* node) override;
|
|
|
|
virtual void GenerateFrame(const rational&) = 0;
|
|
|
|
const char *GetCachedFrame(const rational& time);
|
|
|
|
/**
|
|
* @brief Return the path of the cached image at this time
|
|
*/
|
|
QString CachePathName(const QByteArray &hash);
|
|
|
|
void DeferMap(const rational &time, const QByteArray &hash);
|
|
|
|
/**
|
|
* @brief Function called when there are frames in the queue to cache
|
|
*
|
|
* This function is NOT thread-safe and should only be called in the main thread.
|
|
*/
|
|
void CacheNext();
|
|
|
|
const VideoRenderingParams& params() const;
|
|
|
|
QMap<rational, QByteArray> time_hash_map_;
|
|
|
|
QList<HashTimeMapping> deferred_maps_;
|
|
|
|
QMutex cache_hash_list_mutex_;
|
|
QVector<QByteArray> cache_hash_list_;
|
|
|
|
rational last_time_requested_;
|
|
|
|
bool caching_;
|
|
|
|
signals:
|
|
void CachedFrameReady(const rational& time);
|
|
|
|
protected:
|
|
/**
|
|
* @brief Internal function for generating the cache ID
|
|
*/
|
|
virtual bool GenerateCacheIDInternal(QCryptographicHash& hash) override;
|
|
|
|
private:
|
|
VideoRenderingParams params_;
|
|
|
|
QLinkedList<rational> cache_queue_;
|
|
|
|
QByteArray cache_frame_load_buffer_;
|
|
|
|
private slots:
|
|
|
|
|
|
};
|
|
|
|
#endif // VIDEORENDERERBACKEND_H
|