參數(shù)資料
型號: μSAP70732-B03
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 70/166頁
文件大小: 713K
代理商: ΜSAP70732-B03
70
μSAP705100-B03, μSAP70732-B03 USER'S MANUAL
2.3.1 CJINFO Structure
The CJINFO structure is used for compression processing.
The type of this structure is defined in file jpeg.h.
The first address of this structure is passed to the compression routine as an argument.
Table 2-6. CJINFO Structure (AP70732-B03) (1/2)
Member
Type
Description
In/Out
ErrorState
int
Error status
In/Out
FileSize
int
JPEG file size
Out
Restart
unsigned short
Restart interval
In
Width
unsigned short
Number of horizontal pixels of image
In
Height
unsigned short
Number of vertical pixels of image
In
Quality
char
Quantization parameter
In
Sampling
char
Sampling ratio
In
Mode
char
Compression mode
In
Reserve
char x 3
Reserved
-
JPEG_Buff_Bptr
unsigned char*
JPEG buffer first address
In
JPEG_Buff_Eptr
unsigned char*
JPEG buffer first address + JPEG buffer size
In
IRAM_Buff_Bptr
int*
Reserved
-
StartX
short
Start x position of image (number of pixels)
In
StartY
short
Start y position of image (number of pixels)
In
VRAM_Bptr
unsigned char*
VRAM first address
In
Note 1
VRAM_W_Pixel
short
Horizontal width of VRAM (number of pixels)
In
Note 2
VRAM_H_Pixel
short
Vertical width of VRAM (number of pixels)
In
Note 2
VRAM_Line_Byte
int
Address difference of one vertical pixel of VRAM
In
Note 1
VRAM_Pixel_Byte
int
Address difference of one horizontal pixel of VRAM
In
Note 1
VRAM_Gap1_Byte
int
Address difference of /R and B between Y and Cb of VRAM
In
Note 1
VRAM_Gap2_Byte
int
Address difference of /R and G between Y and Cr of VRAM
In
Note 1
APP_Info_Bptr
APPINFO*
APPINFO structure first address
In
DQT_Y_Bptr
char*
Luminance component quantization table first address
In
DQT_C_Bptr
char*
Chrominance component quantization table first address
In
DHT_DC_Y_Bptr
char*
Luminance DC Huffman table first address
In
DHT_DC_C_Bptr
char*
Luminance AC Huffman table first address
In
DHT_AC_Y_Bptr
char*
Chrominance DC Huffman table first address
In
Notes 1.
These members need not be set if the getmcu function is created by the user.
2.
Set these members as dummies if the getmcu function is created by the user.
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