174 lines
4.2 KiB
C++
174 lines
4.2 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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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, either version 3 of the License, or
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(at your option) any later version.
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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 for more details.
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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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#ifndef RENDERWORKER_H
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#define RENDERWORKER_H
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#include <QMatrix4x4>
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#include "decodercache.h"
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#include "node/traverser.h"
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#include "node/output/viewer/viewer.h"
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OLIVE_NAMESPACE_ENTER
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class RenderBackend;
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class RenderWorker : public QObject, public NodeTraverser
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{
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Q_OBJECT
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public:
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RenderWorker(RenderBackend* parent);
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virtual ~RenderWorker() override;
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void Init(ViewerOutput *viewer);
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void Close();
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void Queue(NodeInput* input);
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void ProcessQueue();
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bool IsAvailable() const
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{
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return available_;
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}
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void SetAvailable(bool a)
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{
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available_ = a;
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}
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ViewerOutput* GetViewer() const
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{
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return viewer_;
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}
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void SetVideoParams(const VideoRenderingParams& params)
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{
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video_params_ = params;
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}
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void SetAudioParams(const AudioRenderingParams& params)
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{
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audio_params_ = params;
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}
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void SetVideoDownloadMatrix(const QMatrix4x4& mat)
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{
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video_download_matrix_ = mat;
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}
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/**
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* @brief Return a unique ID for the image generated at this time
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*
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* This hash should always be unique to this image and can therefore be used to match existing
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* cached frames.
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*
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* @return
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*
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* SHA-1 hash or empty QByteArray if no viewer node is set.
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*/
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QByteArray Hash(const rational &time, bool block_for_update);
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/**
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* @brief Render the frame at this time
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*
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* Produces a fully rendered frame from the connected viewer at this time.
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*
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* @return
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*
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* A frame corresponding to the set video parameters. If no nodes are active at the time, this
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* function will still return a blank frame with the same parameters. If no viewer node is set,
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* nullptr is returned.
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*/
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FramePtr RenderFrame(const rational& time, bool block_for_update);
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SampleBufferPtr RenderAudio(const TimeRange& range);
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protected:
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virtual void TextureToFrame(const QVariant& texture, FramePtr frame, const QMatrix4x4 &mat) const = 0;
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virtual NodeValue FrameToTexture(DecoderPtr decoder, StreamPtr stream, const TimeRange &range) const = 0;
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virtual void FootageProcessingEvent(StreamPtr stream, const TimeRange &input_time, NodeValueTable* table) override;
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virtual NodeValueTable GenerateBlockTable(const TrackOutput *track, const TimeRange &range) override;
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virtual void ProcessNodeEvent(const Node *node, const TimeRange &range, NodeValueDatabase &input_params_in, NodeValueTable &output_params) override;
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const VideoRenderingParams& video_params() const
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{
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return video_params_;
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}
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const AudioRenderingParams& audio_params() const
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{
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return audio_params_;
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}
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signals:
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void AudioConformUnavailable();
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void FinishedJob();
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private:
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void UpdateData(bool block_for_update);
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NodeValue GetDataFromStream(StreamPtr stream, const TimeRange& input_time);
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DecoderPtr ResolveDecoderFromInput(StreamPtr stream);
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void CopyNodeInputValue(NodeInput* input);
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Node *CopyNodeConnections(Node *src_node);
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void CopyNodeMakeConnection(NodeInput *src_input, NodeInput *dst_input);
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RenderBackend* parent_;
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VideoRenderingParams video_params_;
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AudioRenderingParams audio_params_;
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struct CachedStill {
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NodeValue texture;
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QString colorspace;
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bool alpha_is_associated;
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int divider;
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rational time;
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};
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QHash<Stream*, CachedStill> still_image_cache_;
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QMatrix4x4 video_download_matrix_;
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DecoderCache decoder_cache_;
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ViewerOutput* viewer_;
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QList<NodeInput*> queued_updates_;
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QHash<Node*, Node*> copy_map_;
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bool available_;
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QMutex lock_;
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};
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OLIVE_NAMESPACE_EXIT
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#endif // RENDERWORKER_H
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