Struct DEC

#[repr(C)]
pub struct DEC {

    pub imageproperty: IMAGEPROPERTY,
    pub swreset: SWRESET,
    pub decodingstatus: DECODINGSTATUS,
    pub quanttableno: QUANTTABLENO,
    pub huffmantableno: HUFFMANTABLENO,
    pub dri: DRI,
    pub sizey: SIZEY,
    pub sizex: SIZEX,
    pub decodingoption: DECODINGOPTION,
    pub intr_dec_en: INTR_DEC_EN,
    pub intr_dec: INTR_DEC,
    pub errorcode: ERRORCODE,
    pub correctioncropstatus: CORRECTIONCROPSTATUS,
    pub suspend: SUSPEND,
    pub dnl: DNL,
    pub cropstarty: CROPSTARTY,
    pub cropstartx: CROPSTARTX,
    pub cropsizey: CROPSIZEY,
    pub cropsizex: CROPSIZEX,
    pub quanttable0: [QUANTTABLE0; 32],
    pub quanttable1: [QUANTTABLE1; 32],
    pub quanttable2: [QUANTTABLE2; 32],
    pub quanttable3: [QUANTTABLE3; 32],
    pub huffmantabledc0codelength: [HUFFMANTABLEDC0CODELENGTH; 4],
    pub huffmantabledc0groupno: [HUFFMANTABLEDC0GROUPNO; 3],
    pub huffmantableac0codelength: [HUFFMANTABLEAC0CODELENGTH; 4],
    pub huffmantableac0groupno: [HUFFMANTABLEAC0GROUPNO; 41],
    pub huffmantabledc1codelength: [HUFFMANTABLEDC1CODELENGTH; 4],
    pub huffmantabledc1groupno: [HUFFMANTABLEDC1GROUPNO; 3],
    pub huffmantableac1codelength: [HUFFMANTABLEAC1CODELENGTH; 4],
    pub huffmantableac1groupno: [HUFFMANTABLEAC1GROUPNO; 41],
    /* private fields */
}

Register block

Fields

imageproperty: IMAGEPROPERTY

0x00 - Image property settings.

swreset: SWRESET

0x04 - Software reset trigger.

decodingstatus: DECODINGSTATUS

0x08 - Decoding status

quanttableno: QUANTTABLENO

0x0c - Quantization table number downloaded from the JPEG image.

huffmantableno: HUFFMANTABLENO

0x10 - Huffman Table number downloaded from the JPEG image.

dri: DRI

0x14 - The DRI value downloaded from the JPEG image.

sizey: SIZEY

0x18 - Y size downloaded from the JPEG image.

sizex: SIZEX

0x1c - X size downloaded from the JPEG image.

decodingoption: DECODINGOPTION

0x24 - Decoding option settings.

intr_dec_en: INTR_DEC_EN

0x28 - Interrupt Setting

intr_dec: INTR_DEC

0x2c - Interrupt status

errorcode: ERRORCODE

0x30 - Error code for INTR_DEC.ErrorMarker.

correctioncropstatus: CORRECTIONCROPSTATUS

0x34 - Correction Mode and Crop Decoding status. This register is initialized by the decoding start trigger (CMD.START).

suspend: SUSPEND

0x38 - Suspend status. Decoding can be resumed from Suspended State by writing ‘1’ to CMD.RESUME.

dnl: DNL

0x3c - DNL value downloaded from the JPEG image. This register is initialized by the decoding start trigger (CMD.START).

cropstarty: CROPSTARTY

0x40 - Y crop start position

cropstartx: CROPSTARTX

0x44 - X crop start position

cropsizey: CROPSIZEY

0x48 - Crop size for Y direction

cropsizex: CROPSIZEX

0x4c - Crop size for X direction

quanttable0: [QUANTTABLE0; 32]

0x100..0x180 - Quantization Table number 0 downloaded from a JPEG image.

quanttable1: [QUANTTABLE1; 32]

0x180..0x200 - Quantization Table number 1 downloaded from a JPEG image.

quanttable2: [QUANTTABLE2; 32]

0x200..0x280 - Quantization Table number 2 downloaded from a JPEG image.

quanttable3: [QUANTTABLE3; 32]

0x280..0x300 - Quantization Table number 3 downloaded from a JPEG image.

huffmantabledc0codelength: [HUFFMANTABLEDC0CODELENGTH; 4]

0x300..0x310 - Shows the code length distribution for DC Huffman Table 0. For each Huffman code lengths (0 to 16), the number of used codes is shown. e.g. Field for code length 3 has the value ‘5’ when 010/011/100/101/110 are used.

huffmantabledc0groupno: [HUFFMANTABLEDC0GROUPNO; 3]

0x310..0x31c - Shows the group numbers in the order of descending appearance frequencies for DC Huffman Table 0.

huffmantableac0codelength: [HUFFMANTABLEAC0CODELENGTH; 4]

0x320..0x330 - Shows the code length distribution for AC Huffman Table 0. For each Huffman code lengths (0 to 16), the number of used codes is shown. e.g. Field for code length 3 has the value ‘5’ when 010/011/100/101/110 are used.

huffmantableac0groupno: [HUFFMANTABLEAC0GROUPNO; 41]

0x330..0x3d4 - Shows the zero run-length+group number values in the order of descending appearance frequencies for AC Huffman Table 0.

huffmantabledc1codelength: [HUFFMANTABLEDC1CODELENGTH; 4]

0x414..0x424 - Shows the code length distribution for DC Huffman Table 1. For each Huffman code lengths (0 to 16), the number of used codes is shown. e.g. Field for code length 3 has the value ‘5’ when 010/011/100/101/110 are used.

huffmantabledc1groupno: [HUFFMANTABLEDC1GROUPNO; 3]

0x424..0x430 - Shows the group numbers in the order of descending appearance frequencies for DC Huffman Table 1.

huffmantableac1codelength: [HUFFMANTABLEAC1CODELENGTH; 4]

0x434..0x444 - Shows the code length distribution for AC Huffman Table 1. For each Huffman code lengths (0 to 16), the number of used codes is shown. e.g. Field for code length 3 has the value ‘5’ when 010/011/100/101/110 are used.

huffmantableac1groupno: [HUFFMANTABLEAC1GROUPNO; 41]

0x444..0x4e8 - Shows the zero run-length+group number values in the order of descending appearance frequencies for AC Huffman Table 1.