cmsis runtime complement for XiZi

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wuzheng 2023-02-27 14:19:04 +08:00
parent 918b3663b8
commit d7e72942b5
2 changed files with 1165 additions and 0 deletions

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/*----------------------------------------------------------------------------/
/ TJpgDec - Tiny JPEG Decompressor include file (C)ChaN, 2019
/----------------------------------------------------------------------------*/
#ifndef DEF_TJPGDEC
#define DEF_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) */
#define JD_SCALE 2 /* 0:1/1 1:1/2 2:1/4 3:1/8 */
/*---------------------------------------------------------------------------*/
#ifdef __cplusplus
extern "C" {
#endif
#if defined(_WIN32) /* Main development platform */
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef short int16_t;
typedef unsigned long uint32_t;
typedef long int32_t;
#else
#include "stdint.h"
#endif
/* Error code */
typedef enum
{
JDR_OK = 0, /* 0: Succeeded */
JDR_INTR, /* 1: Interrupted by output function */
JDR_INP, /* 2: Device error or wrong termination of input stream */
JDR_MEM1, /* 3: Insufficient memory pool for the image */
JDR_MEM2, /* 4: Insufficient stream input buffer */
JDR_PAR, /* 5: Parameter error */
JDR_FMT1, /* 6: Data format error (may be damaged data) */
JDR_FMT2, /* 7: Right format but not supported */
JDR_FMT3 /* 8: Not supported JPEG standard */
} JRESULT;
/* Rectangular structure */
typedef struct
{
uint16_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]; /* Dequantizer 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 *, uint8_t *, uint16_t); /* Pointer to jpeg stream input function */
void *device; /* Pointer to I/O device identifiler for the session */
};
/* TJpgDec API functions */
JRESULT jd_prepare (JDEC *, uint16_t(*)(JDEC *, uint8_t *, uint16_t), void *, uint16_t, void *);
JRESULT jd_decomp (JDEC *, uint16_t(*)(JDEC *, void *, JRECT *), uint8_t);
#ifdef __cplusplus
}
#endif
#endif /* _TJPGDEC */