jdatasrc.c File Reference

#include <stdbool.h>
#include <stdio.h>
#include <setjmp.h>
#include "compiler.h"
#include "board.h"
#include "file.h"
#include "sdram_loader.h"
#include "jpeg_decoder.h"
#include "conf_jpeg_decoder.h"
#include "jpeglib.h"
#include "jinclude.h"

Data Structures
struct	extended_error_mgr
struct	jpeg_lib
struct	my_source_mgr

Macros
#define	DEFAULT_MAX_IMAGE_HEIGHT   128
#define	DEFAULT_MAX_IMAGE_WIDTH   128
#define	DEFAULT_PIXEL_SIZE_IN_BYTES   2
#define	JPEG_INPUT_BUF_SIZE   1024

Typedefs
typedef struct extended_error_mgr *	extended_error_ptr
typedef my_source_mgr *	my_src_ptr

Functions
	extended_error_exit (j_common_ptr cinfo)
static boolean	fill_input_buffer (j_decompress_ptr cinfo)
static void	init_source (j_decompress_ptr cinfo)
bool	jpeg_lib_decode (int offset)
void *	jpeg_lib_decode_ex (int offset, uint16_t *width, uint16_t *height)
void	jpeg_lib_exit (void)
bool	jpeg_lib_init (void)
void	jpeg_stdio_src (j_decompress_ptr cinfo, FILE *infile)
static void	skip_input_data (j_decompress_ptr cinfo, long num_bytes)
static void	term_source (j_decompress_ptr cinfo)

Variables
static struct jpeg_lib	jpeg_lib_data
uint16_t *	jpeg_out_buffer_pos

#define DEFAULT_MAX_IMAGE_HEIGHT   128

#define DEFAULT_MAX_IMAGE_WIDTH   128

#define DEFAULT_PIXEL_SIZE_IN_BYTES   2

#define JPEG_INPUT_BUF_SIZE   1024

Referenced by fill_input_buffer(), and jpeg_stdio_src().

typedef struct extended_error_mgr* extended_error_ptr

typedef my_source_mgr* my_src_ptr

extended_error_exit

(

j_common_ptr

cinfo

)

References extended_error_mgr::setjmp_buffer.

Referenced by jpeg_lib_init().

static boolean fill_input_buffer ( j_decompress_ptr  cinfo )

static

References my_source_mgr::buffer, jpeg_source_mgr::bytes_in_buffer, file_read_buf(), JPEG_EOI, JPEG_INPUT_BUF_SIZE, jpeg_source_mgr::next_input_byte, my_source_mgr::pub, jpeg_decompress_struct::src, and my_source_mgr::start_of_file.

Referenced by jpeg_stdio_src(), and skip_input_data().

static void init_source ( j_decompress_ptr  cinfo )

static

References jpeg_decompress_struct::src, and my_source_mgr::start_of_file.

Referenced by jpeg_stdio_src().

bool jpeg_lib_decode

(

int

offset

)

References jpeg_lib::cinfo, jpeg_decompress_struct::dct_method, jpeg_decompress_struct::do_fancy_upsampling, file_close(), file_open(), file_seek(), FOPEN_MODE_R, FS_SEEK_SET, jpeg_decompress_struct::image_height, jpeg_decompress_struct::image_width, JCS_RGB565, JDCT_FASTEST, JPEG_HEADER_OK, jpeg_lib_data, jpeg_out_buffer_pos, jpeg_stdio_src(), max_lines, jpeg_decompress_struct::out_color_space, jpeg_decompress_struct::output_height, jpeg_lib::output_image, jpeg_decompress_struct::output_scanline, jpeg_decompress_struct::output_width, and jpeg_decompress_struct::scale_denom.

Referenced by jpeg_lib_decode_ex().

void* jpeg_lib_decode_ex	(	int	offset,
		uint16_t *	width,
		uint16_t *	height
	)

References jpeg_lib::cinfo, jpeg_lib_data, jpeg_lib_decode(), jpeg_decompress_struct::output_height, jpeg_lib::output_image, and jpeg_decompress_struct::output_width.

Referenced by ai_usb_ms_support_info_image().

void jpeg_lib_exit

(

void

)

References jpeg_lib::cinfo, jpeg_lib_data, mspace_free(), jpeg_lib::output_image, and sdram_mspace.

bool jpeg_lib_init

(

void

)

References jpeg_lib::cinfo, extended_error_exit(), jpeg_create_decompress, JPEG_DECODER_MAX_IMAGE_HEIGHT, JPEG_DECODER_MAX_IMAGE_WIDTH, JPEG_DECODER_PIXEL_SIZE_IN_BYTES, jpeg_lib_data, mspace_free(), mspace_malloc(), jpeg_lib::output_image, and sdram_mspace.

Referenced by ai_usb_ms_mp3_support_init().

void jpeg_stdio_src	(	j_decompress_ptr	cinfo,
		FILE *	infile
	)

References my_source_mgr::buffer, jpeg_source_mgr::bytes_in_buffer, fill_input_buffer(), my_source_mgr::infile, init_source(), JPEG_INPUT_BUF_SIZE, JPOOL_PERMANENT, jpeg_source_mgr::next_input_byte, my_source_mgr::pub, SIZEOF, skip_input_data(), jpeg_decompress_struct::src, and term_source().

Referenced by jpeg_lib_decode().

static void skip_input_data ( j_decompress_ptr  cinfo, long  num_bytes  )

static

References jpeg_source_mgr::bytes_in_buffer, fill_input_buffer(), jpeg_source_mgr::next_input_byte, my_source_mgr::pub, and jpeg_decompress_struct::src.

Referenced by jpeg_stdio_src().

static void term_source ( j_decompress_ptr  cinfo )

static

Referenced by jpeg_stdio_src().

struct jpeg_lib jpeg_lib_data

static

Referenced by jpeg_lib_decode(), jpeg_lib_decode_ex(), jpeg_lib_exit(), and jpeg_lib_init().

uint16_t* jpeg_out_buffer_pos

Referenced by jpeg_lib_decode().