itsmattkc
92da0c220d
The audio rendering system uses an event-based mechanism where if audio needs to be converted (i.e. to a different sample rate), it will create a conform task and re-render that section again when the audio is ready. Unfortunately, the export code didn't respect this and would start encoding audio once the initial queue was done. This usually resulted in silent audio, but could also result in "uninitialized" audio that would crash any float-based encoders (e.g. AAC). Now we use a different signal that only emits once the queue is done AND all conforms are done.
86 lines
2.0 KiB
C++
86 lines
2.0 KiB
C++
#ifndef AUDIORENDERBACKEND_H
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#define AUDIORENDERBACKEND_H
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#include "common/timerange.h"
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#include "renderbackend.h"
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class AudioRenderBackend : public RenderBackend
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{
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Q_OBJECT
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public:
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AudioRenderBackend(QObject* parent = nullptr);
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/**
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* @brief Set parameters of the Renderer
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*
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* The Renderer owns the buffers that are used in the rendering process and this function sets the kind of buffers
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* to use. The Renderer must be stopped when calling this function.
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*/
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void SetParameters(const AudioRenderingParams ¶ms);
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virtual QIODevice* GetAudioPullDevice() = 0;
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const AudioRenderingParams& params();
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QString CachePathName();
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signals:
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void ParamsChanged();
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void AudioComplete();
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protected:
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virtual void ConnectViewer(ViewerOutput* node) override;
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virtual void DisconnectViewer(ViewerOutput* node) override;
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virtual bool CompileInternal() override;
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virtual void DecompileInternal() override;
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/**
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* @brief Internal function for generating the cache ID
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*/
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virtual bool GenerateCacheIDInternal(QCryptographicHash& hash) override;
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virtual NodeInput* GetDependentInput() override;
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virtual bool CanRender() override;
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virtual void ConnectWorkerToThis(RenderWorker* worker) override;
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virtual TimeRange PopNextFrameFromQueue() override;
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virtual void InvalidateCacheInternal(const rational &start_range, const rational &end_range) override;
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QHash<Node*, Node*> copy_map_;
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private:
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struct ConformWaitInfo {
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StreamPtr stream;
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AudioRenderingParams params;
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TimeRange affected_range;
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rational stream_time;
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bool operator==(const ConformWaitInfo& rhs) const;
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};
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QList<ConformWaitInfo> conform_wait_info_;
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AudioRenderingParams params_;
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bool ic_from_conform_;
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private slots:
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void ConformUnavailable(StreamPtr stream, const TimeRange& range, const rational& stream_time, const AudioRenderingParams ¶ms);
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void ConformUpdated(Stream *stream, const AudioRenderingParams& params);
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void TruncateCache(const rational& r);
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void FilterQueueCompleteSignal();
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};
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#endif // AUDIORENDERBACKEND_H
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