jpeg.h File Reference

Encode images with the use of the JPEG encoding. More...

#include "std.h"
#include "lib/vision/image.h"

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Macros
#define	FOUR_ZERO_ZERO   0
#define	FOUR_TWO_ZERO   1
#define	FOUR_TWO_TWO   2
#define	FOUR_FOUR_FOUR   3
#define	RGB   4

Functions
void	jpeg_encode_image (struct image_t *in, struct image_t *out, uint32_t quality_factor, bool add_dri_header)
	Encode an YUV422 image. More...
int	jpeg_create_svs_header (unsigned char *buf, int32_t size, int w)

Detailed Description

Encode images with the use of the JPEG encoding.

Definition in file jpeg.h.

Macro Definition Documentation

FOUR_FOUR_FOUR

#define FOUR_FOUR_FOUR   3

Definition at line 31 of file jpeg.h.

FOUR_TWO_TWO

#define FOUR_TWO_TWO   2

Definition at line 30 of file jpeg.h.

FOUR_TWO_ZERO

#define FOUR_TWO_ZERO   1

Definition at line 29 of file jpeg.h.

FOUR_ZERO_ZERO

#define FOUR_ZERO_ZERO   0

Definition at line 28 of file jpeg.h.

RGB

#define RGB   4

Definition at line 32 of file jpeg.h.

Function Documentation

jpeg_create_svs_header()

int jpeg_create_svs_header	(	unsigned char *	buf,
		int32_t	size,
		int	w
	)

Definition at line 44 of file jpeg.c.

References p, s, and svs_size_code().

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jpeg_encode_image()

void jpeg_encode_image	(	struct image_t *	in,
		struct image_t *	out,
		uint32_t	quality_factor,
		bool	add_dri_header
	)

Encode an YUV422 image.

Parameters

[in]	*in	The input image
[out]	*out	The output JPEG image
[in]	quality_factor	Quality factor of the encoding (0-99)
[in]	add_dri_header	Add the DRI header (needed for full JPEG)

Definition at line 408 of file jpeg.c.

References image_t::buf, image_t::buf_size, JPEG_ENCODER_STRUCTURE::cols, JPEG_ENCODER_STRUCTURE::cols_in_right_mcus, FOUR_TWO_TWO, FOUR_ZERO_ZERO, image_t::h, JPEG_ENCODER_STRUCTURE::horizontal_mcus, IMAGE_GRAYSCALE, IMAGE_YUV422, JPEG_ENCODER_STRUCTURE::incr, jpeg_close_bitstream(), jpeg_encodeMCU(), jpeg_initialization(), jpeg_write_markers(), JPEG_ENCODER_STRUCTURE::length_minus_mcu_width, JPEG_ENCODER_STRUCTURE::length_minus_width, MakeTables(), JPEG_ENCODER_STRUCTURE::mcu_height, JPEG_ENCODER_STRUCTURE::mcu_width, JPEG_ENCODER_STRUCTURE::mcu_width_size, JPEG_ENCODER_STRUCTURE::offset, read_format, JPEG_ENCODER_STRUCTURE::rows, JPEG_ENCODER_STRUCTURE::rows_in_bottom_mcus, image_t::type, JPEG_ENCODER_STRUCTURE::vertical_mcus, and image_t::w.

Referenced by save_shot_on_disk(), video_capture_save(), and viewvideo_function().

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