image_jpeg.c File Reference

JPEG image functions. More...

#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#include "jpeglib.h"
#include "jerror.h"
#include "techtype.h"
#include "dbgfuncs.h"
#include "stbheap.h"

Classes
struct	S_PSEUDO_FILE
struct	my_error_mgr
struct	my_source_mgr

Macros
#define	INPUT_BUF_SIZE   4096 /* choose an efficiently fread'able size */
#define	DBG(x)

Typedefs
typedef struct my_error_mgr *	my_error_ptr
typedef my_source_mgr *	my_src_ptr

Functions
BOOLEAN	STB_IMGConvertJPEG (U8BIT *image_data, U32BIT image_data_size, U8BIT **output_data, U32BIT *output_data_size, U16BIT *pixel_width, U16BIT *pixel_height)
	Converts the given JPEG image data to a bitmap image that can be displayed on-screen, but no scaling is applied. More...

Detailed Description

JPEG image functions.

Date

1 December 2010

Author

Steve Ford

Function Documentation

BOOLEAN STB_IMGConvertJPEG	(	U8BIT *	image_data,
		U32BIT	image_data_size,
		U8BIT **	output_data,
		U32BIT *	output_data_size,
		U16BIT *	pixel_width,
		U16BIT *	pixel_height
	)

Converts the given JPEG image data to a bitmap image that can be displayed on-screen, but no scaling is applied.

---

Parameters

image_data	- PNG image data
image_data_size	- number of PNG image data bytes
output_data	- address of pointer to buffer allocated for output data
output_data_size	- pointer to number of bytes in output bitmap
pixel_width	- pointer to returned width in pixels
pixel_height	- pointer to returned height in pixels

Returns

TRUE if image data is a valid PNG and conversion succeeds, FALSE otherwise