esphome::runtime_image::JpegDecoder Class Reference

Image decoder specialization for JPEG images. More...

#include <jpeg_decoder.h>

Inheritance diagram for esphome::runtime_image::JpegDecoder:

Public Member Functions
	JpegDecoder (RuntimeImage *image)
	Construct a new JPEG Decoder object.
	~JpegDecoder () override
int	prepare (size_t expected_size) override
int HOT	decode (uint8_t *buffer, size_t size) override
Public Member Functions inherited from esphome::runtime_image::ImageDecoder
	ImageDecoder (RuntimeImage *image)
	Construct a new Image Decoder object.
virtual	~ImageDecoder ()=default
bool	set_size (int width, int height)
	Request the image to be resized once the actual dimensions are known.
void	draw (int x, int y, int w, int h, const Color &color)
	Fill a rectangle on the display_buffer using the defined color.
virtual bool	is_finished () const
	Check if the decoder has finished processing.

Protected Attributes
JPEGDEC	jpeg_ {}
Protected Attributes inherited from esphome::runtime_image::ImageDecoder
RuntimeImage *	image_
size_t	expected_size_ = 0
size_t	decoded_bytes_ = 0
double	x_scale_ = 1.0
double	y_scale_ = 1.0

Detailed Description

Image decoder specialization for JPEG images.

Definition at line 14 of file jpeg_decoder.h.

Constructor & Destructor Documentation

JpegDecoder()

esphome::runtime_image::JpegDecoder::JpegDecoder ( RuntimeImage * image )

inline

Construct a new JPEG Decoder object.

Parameters

image

The RuntimeImage to decode the stream into.

Definition at line 21 of file jpeg_decoder.h.

~JpegDecoder()

esphome::runtime_image::JpegDecoder::~JpegDecoder ( )

inlineoverride

Definition at line 22 of file jpeg_decoder.h.

Member Function Documentation

decode()

int HOT esphome::runtime_image::JpegDecoder::decode ( uint8_t * buffer, size_t size )

overridevirtual

Implements esphome::runtime_image::ImageDecoder.

Definition at line 61 of file jpeg_decoder.cpp.

prepare()

int esphome::runtime_image::JpegDecoder::prepare ( size_t expected_size )

overridevirtual

Reimplemented from esphome::runtime_image::ImageDecoder.

Definition at line 55 of file jpeg_decoder.cpp.

Field Documentation

jpeg_

JPEGDEC esphome::runtime_image::JpegDecoder::jpeg_ {}

protected

Definition at line 28 of file jpeg_decoder.h.

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

• esphome/components/runtime_image/jpeg_decoder.h
• esphome/components/runtime_image/jpeg_decoder.cpp