Image decoder specialization for JPEG images. More...

Inheritance diagram for esphome::runtime_image::JpegDecoder:

Public Member Functions
	JpegDecoder (RuntimeImage *image)
	Construct a new JPEG Decoder object.

	~JpegDecoder () override

int HOT	decode (uint8_t *buffer, size_t size) override

Public Member Functions inherited from esphome::runtime_image::ImageDecoder
	ImageDecoder (RuntimeImage *image, ImageFormat format)
	Construct a new Image Decoder object.

virtual	~ImageDecoder ()=default

ImageFormat	get_format () const
	Get the image format handled by this decoder.

bool	is_active () const
	Check if a decoding session is in progress (prepare() called, reset() not yet).

virtual void	reset ()
	Reset the decoder state, ending any decoding session.

virtual int	prepare (size_t expected_size)
	Initialize the decoder, starting a new decoding session.

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
double	x_scale_ = 1.0

double	y_scale_ = 1.0

RuntimeImage *	image_

size_t	expected_size_ = 0

size_t	decoded_bytes_ = 0

const ImageFormat	format_

bool	active_ = false

bool	size_valid_ = true

Detailed Description

Image decoder specialization for JPEG images.

Definition at line 14 of file jpeg_decoder.h.

Constructor & Destructor Documentation

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.

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

inlineoverride

Definition at line 22 of file jpeg_decoder.h.

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

overridevirtual

Definition at line 55 of file jpeg_decoder.cpp.

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

protected

Definition at line 27 of file jpeg_decoder.h.

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