CameraFrameSourceTinyCamera Class Reference

VideoFrameSource that pulls frames from a camera via TinyCamera (https://github.com/pschatzmann/TinyCamera) - so it works on every platform TinyCamera supports (ESP32 via esp32-camera, ESP32-P4 MIPI-CSI via ESP_Video, RP2040, STM32, desktop). nextFrame() returns the buffer of a freshly captured frame, returning the previous one to the driver first; as with any VideoFrameSource, the returned pointer is only valid until the next nextFrame() call. More...

#include <CameraFrameSourceTinyCamera.h>

Inheritance diagram for CameraFrameSourceTinyCamera:

Collaboration diagram for CameraFrameSourceTinyCamera:

Public Member Functions
	CameraFrameSourceTinyCamera ()=default
bool	begin (const camera_config_t &config, float fps)
tiny_camera::TinyCamera &	camera ()
	Access to the camera, e.g. for sensor tuning (camera().sensor()).
void	end ()
	Returns the last captured frame (if any) and releases the camera.
const uint8_t *	nextFrame (size_t &len) override
VideoInfo	videoInfo () override
	Width/height/format determined by begin(), and the fps given to it.
bool	writeTo (Print &out)
	Write the frame to the indicated destination.

Static Protected Member Functions
static VideoFormat	toVideoFormat (pixformat_t format)

Protected Attributes
tiny_camera::TinyCamera	camera_
tiny_camera::TinyCameraFrame	frame_
VideoInfo	info

Detailed Description

VideoFrameSource that pulls frames from a camera via TinyCamera (https://github.com/pschatzmann/TinyCamera) - so it works on every platform TinyCamera supports (ESP32 via esp32-camera, ESP32-P4 MIPI-CSI via ESP_Video, RP2040, STM32, desktop). nextFrame() returns the buffer of a freshly captured frame, returning the previous one to the driver first; as with any VideoFrameSource, the returned pointer is only valid until the next nextFrame() call.

begin() captures one probe frame to determine width/height/format, so videoInfo() is complete right after it (as VideoMuxer::begin() requires) without any frame_size lookup table. Only the frame rate has to be given, since a camera has no fixed one: use the rate you actually want to capture (and encode) at.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

CameraFrameSourceTinyCamera()

CameraFrameSourceTinyCamera ( )

default

Member Function Documentation

begin()

bool begin ( const camera_config_t &  config, float  fps  )

inline

Initializes the camera and captures a probe frame to determine width/height/format - see the class comment.

Parameters

fps	frame rate reported by videoInfo().

camera()

tiny_camera::TinyCamera & camera ( )

inline

Access to the camera, e.g. for sensor tuning (camera().sensor()).

end()

void end ( )

inline

Returns the last captured frame (if any) and releases the camera.

nextFrame()

const uint8_t * nextFrame ( size_t &  len )

inlineoverridevirtual

Returns the previous frame (if still held), captures a new one and returns its buffer - nullptr (len 0) if the capture failed.

Implements VideoFrameSource.

toVideoFormat()

static VideoFormat toVideoFormat ( pixformat_t  format )

inlinestaticprotected

videoInfo()

VideoInfo videoInfo ( )

inlineoverridevirtual

Width/height/format determined by begin(), and the fps given to it.

Implements VideoFrameSource.

writeTo()

bool writeTo ( Print &  out )

inlineinherited

Write the frame to the indicated destination.

Member Data Documentation

camera_

tiny_camera::TinyCamera camera_

protected

frame_

tiny_camera::TinyCameraFrame frame_

protected

info

VideoInfo info

protected

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

• src/AudioTools/Video/Camera/CameraFrameSourceTinyCamera.h