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JDEC Struct Reference
Internal structure for the jpeg engine. More...
#include <GraphicsDisplayJPEG.h>
Data Fields | |
| uint16_t | dctr |
| Number of bytes available in the input buffer. | |
| uint8_t * | dptr |
| Current data read ptr. | |
| uint8_t * | inbuf |
| Bit stream input buffer. | |
| uint8_t | dmsk |
| Current bit in the current read byte. | |
| uint8_t | scale |
| Output scaling ratio. | |
| uint8_t | msx |
| MCU size in unit of block (width, ...) | |
| uint8_t | msy |
| MCU size in unit of block (..., height) | |
| uint8_t | qtid [3] |
| Quantization table ID of each component. | |
| int16_t | dcv [3] |
| Previous DC element of each component. | |
| uint16_t | nrst |
| Restart inverval. | |
| uint16_t | width |
| Size of the input image (pixel width, ...) | |
| uint16_t | height |
| Size of the input image (..., pixel height) | |
| uint8_t * | huffbits [2][2] |
| Huffman bit distribution tables [id][dcac]. | |
| uint16_t * | huffcode [2][2] |
| Huffman code word tables [id][dcac]. | |
| uint8_t * | huffdata [2][2] |
| Huffman decoded data tables [id][dcac]. | |
| int32_t * | qttbl [4] |
| Dequaitizer tables [id]. | |
| void * | workbuf |
| Working buffer for IDCT and RGB output. | |
| uint8_t * | mcubuf |
| Working buffer for the MCU. | |
| void * | pool |
| Pointer to available memory pool. | |
| uint16_t | sz_pool |
| Size of momory pool (bytes available) | |
| uint16_t(* | infunc )(JDEC *jd, uint8_t *buffer, uint16_t bufsize) |
| Pointer to jpeg stream input function. | |
| void * | device |
| Pointer to I/O device identifiler for the session. | |
Detailed Description
Internal structure for the jpeg engine.
Definition at line 71 of file GraphicsDisplayJPEG.h.
Field Documentation
| uint16_t dctr |
Number of bytes available in the input buffer.
Definition at line 72 of file GraphicsDisplayJPEG.h.
| int16_t dcv[3] |
Previous DC element of each component.
Definition at line 80 of file GraphicsDisplayJPEG.h.
| void* device |
Pointer to I/O device identifiler for the session.
Definition at line 93 of file GraphicsDisplayJPEG.h.
| uint8_t dmsk |
Current bit in the current read byte.
Definition at line 75 of file GraphicsDisplayJPEG.h.
| uint8_t* dptr |
Current data read ptr.
Definition at line 73 of file GraphicsDisplayJPEG.h.
| uint16_t height |
Size of the input image (..., pixel height)
Definition at line 83 of file GraphicsDisplayJPEG.h.
| uint8_t* huffbits[2][2] |
Huffman bit distribution tables [id][dcac].
Definition at line 84 of file GraphicsDisplayJPEG.h.
| uint16_t* huffcode[2][2] |
Huffman code word tables [id][dcac].
Definition at line 85 of file GraphicsDisplayJPEG.h.
| uint8_t* huffdata[2][2] |
Huffman decoded data tables [id][dcac].
Definition at line 86 of file GraphicsDisplayJPEG.h.
| uint8_t* inbuf |
Bit stream input buffer.
Definition at line 74 of file GraphicsDisplayJPEG.h.
Pointer to jpeg stream input function.
Definition at line 92 of file GraphicsDisplayJPEG.h.
| uint8_t* mcubuf |
Working buffer for the MCU.
Definition at line 89 of file GraphicsDisplayJPEG.h.
| uint8_t msx |
MCU size in unit of block (width, ...)
Definition at line 77 of file GraphicsDisplayJPEG.h.
| uint8_t msy |
MCU size in unit of block (..., height)
Definition at line 78 of file GraphicsDisplayJPEG.h.
| uint16_t nrst |
Restart inverval.
Definition at line 81 of file GraphicsDisplayJPEG.h.
| void* pool |
Pointer to available memory pool.
Definition at line 90 of file GraphicsDisplayJPEG.h.
| uint8_t qtid[3] |
Quantization table ID of each component.
Definition at line 79 of file GraphicsDisplayJPEG.h.
| int32_t* qttbl[4] |
Dequaitizer tables [id].
Definition at line 87 of file GraphicsDisplayJPEG.h.
| uint8_t scale |
Output scaling ratio.
Definition at line 76 of file GraphicsDisplayJPEG.h.
| uint16_t sz_pool |
Size of momory pool (bytes available)
Definition at line 91 of file GraphicsDisplayJPEG.h.
| uint16_t width |
Size of the input image (pixel width, ...)
Definition at line 82 of file GraphicsDisplayJPEG.h.
| void* workbuf |
Working buffer for IDCT and RGB output.
Definition at line 88 of file GraphicsDisplayJPEG.h.
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