VideoAudioBufferedSync Class Reference

Logic to Synchronize video and audio output: we use a buffer to store the audio and instead of delaying the frames with delay() we play audio. The bufferSize defines the audio buffer in bytes. The correctionMs is used to slow down or speed up the playback of the video to prevent any audio buffer underflows. More...

#include <Video.h>

Inheritance diagram for VideoAudioBufferedSync:

Public Member Functions
	VideoAudioBufferedSync (int bufferSize, int correctionMs)
void	delayVideoFrame (int32_t microsecondsPerFrame, uint32_t time_used_ms)
void	writeAudio (Print *out, uint8_t *data, size_t size)
	Process the audio data.

Protected Attributes
int	correction_ms = 0
Print *	p_out = nullptr
RingBuffer< uint8_t >	ring_buffer {0}

Detailed Description

Logic to Synchronize video and audio output: we use a buffer to store the audio and instead of delaying the frames with delay() we play audio. The bufferSize defines the audio buffer in bytes. The correctionMs is used to slow down or speed up the playback of the video to prevent any audio buffer underflows.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

VideoAudioBufferedSync()

VideoAudioBufferedSync ( int  bufferSize, int  correctionMs  )

inline

Member Function Documentation

delayVideoFrame()

void delayVideoFrame ( int32_t  microsecondsPerFrame, uint32_t  time_used_ms  )

inlinevirtual

Adds a delay after playing a frame to process with the correct frame rate. If the playing is too slow we return the mod to select the frames

Reimplemented from VideoAudioSync.

writeAudio()

void writeAudio ( Print *  out, uint8_t *  data, size_t  size  )

inlinevirtual

Process the audio data.

Reimplemented from VideoAudioSync.

Member Data Documentation

correction_ms

int correction_ms = 0

protected

p_out

Print* p_out = nullptr

protected

ring_buffer

RingBuffer<uint8_t> ring_buffer {0}

protected

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The documentation for this class was generated from the following file:

• src/AudioTools/Video/Video.h