BurstSPI support for improved performance
Fork of RA8875 by
GraphicsDisplayJPEG.h
- Committer:
- WiredHome
- Date:
- 2016-05-16
- Revision:
- 115:c9862fd0c689
- Child:
- 125:7a0b70f56550
File content as of revision 115:c9862fd0c689:
/// Wrapping ChaN's TJpgDec into this graphics engine /// #ifndef GraphicsDisplayJPEG_H #define GraphicsDisplayJPEG_H /*----------------------------------------------------------------------------/ / TJpgDec - Tiny JPEG Decompressor include file (C)ChaN, 2012 /----------------------------------------------------------------------------*/ #ifndef _TJPGDEC #define _TJPGDEC /*---------------------------------------------------------------------------*/ /* System Configurations */ #define JD_SZBUF 512 /* Size of stream input buffer */ #define JD_FORMAT 1 /* Output pixel format 0:RGB888 (3 BYTE/pix), 1:RGB565 (1 WORD/pix) */ #define JD_USE_SCALE 1 /* Use descaling feature for output */ #define JD_TBLCLIP 1 /* Use table for saturation (might be a bit faster but increases 1K bytes of code size) */ /*---------------------------------------------------------------------------*/ #include "DisplayDefs.h" /* Error code */ typedef enum { JDR_OK = noerror, /* 0: Succeeded */ JDR_INTR = external_abort, /* 1: Interrupted by output function */ JDR_INP = bad_parameter, /* 2: Device error or wrong termination of input stream */ JDR_MEM1 = not_enough_ram, /* 3: Insufficient memory pool for the image */ JDR_MEM2 = not_enough_ram, /* 4: Insufficient stream input buffer */ JDR_PAR = bad_parameter, /* 5: Parameter error */ JDR_FMT1 = not_supported_format, /* 6: Data format error (may be damaged data) */ JDR_FMT2 = not_supported_format, /* 7: Right format but not supported */ JDR_FMT3 = not_supported_format /* 8: Not supported JPEG standard */ } JRESULT; /* Rectangular structure */ typedef struct { loc_t left, right, top, bottom; } JRECT; /* Decompressor object structure */ typedef struct JDEC JDEC; struct JDEC { 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, msy; /* MCU size in unit of block (width, 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, height; /* Size of the input image (pixel) */ 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 */ }; #endif /* _TJPGDEC */ #endif // GraphicsDisplayJPEG_H