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87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
/**
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* @file
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* @brief Source file for VideoCacheThread class
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* @author Jonathan Thomas <jonathan@openshot.org>
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*
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* @ref License
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*/
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// Copyright (c) 2008-2019 OpenShot Studios, LLC
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//
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// SPDX-License-Identifier: LGPL-3.0-or-later
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#ifndef OPENSHOT_VIDEO_CACHE_THREAD_H
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#define OPENSHOT_VIDEO_CACHE_THREAD_H
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#include "ReaderBase.h"
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#include <AppConfig.h>
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#include <juce_audio_basics/juce_audio_basics.h>
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namespace openshot
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{
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using juce::Thread;
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using juce::WaitableEvent;
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/**
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* @brief The video cache class.
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*/
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class VideoCacheThread : Thread
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{
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protected:
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std::shared_ptr<Frame> last_cached_frame;
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int speed;
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int last_speed;
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bool is_playing;
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int64_t requested_display_frame;
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int64_t current_display_frame;
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int64_t cached_frame_count = 0;
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ReaderBase *reader;
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int64_t min_frames_ahead;
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int64_t max_frames_ahead;
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bool should_pause_cache;
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/// Constructor
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VideoCacheThread();
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/// Destructor
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~VideoCacheThread();
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/// Get the size in bytes of a frame (rough estimate)
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int64_t getBytes(int width, int height, int sample_rate, int channels, float fps);
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/// Get Speed (The speed and direction to playback a reader (1=normal, 2=fast, 3=faster, -1=rewind, etc...)
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int getSpeed() const { return speed; }
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/// Play the video
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void Play();
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/// Seek the reader to a particular frame number
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void Seek(int64_t new_position);
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/// Seek the reader to a particular frame number and optionally start the pre-roll
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void Seek(int64_t new_position, bool start_preroll);
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/// Set Speed (The speed and direction to playback a reader (1=normal, 2=fast, 3=faster, -1=rewind, etc...)
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void setSpeed(int new_speed) { speed = new_speed; }
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/// Stop the audio playback
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void Stop();
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/// Start the thread
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void run();
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/// Set the current thread's reader
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void Reader(ReaderBase *new_reader) { reader=new_reader; Play(); };
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/// Parent class of VideoCacheThread
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friend class PlayerPrivate;
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friend class QtPlayer;
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public:
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/// Is cache ready for video/audio playback
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bool isReady();
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};
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}
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#endif // OPENSHOT_VIDEO_CACHE_THREAD_H
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