David Smart / RA8875 Featured

Library to control a Graphics TFT connected to 4-wire SPI - revised for the Raio RA8875 Display Controller.

Dependents:   FRDM_RA8875_mPaint RA8875_Demo RA8875_KeyPadDemo SignalGenerator ... more

Fork of SPI_TFT by Peter Drescher

See Components - RA8875 Based Display

Enhanced touch-screen support - where it previous supported both the Resistive Touch and Capacitive Touch based on the FT5206 Touch Controller, now it also has support for the GSL1680 Touch Controller.

Offline Help Manual (Windows chm)

/media/uploads/WiredHome/ra8875.zip.bin (download, rename to .zip and unzip)

GraphicsDisplayJPEG.h@206:83edda283d90, 2020-05-25 (annotated)

Committer:
WiredHome
Date:
Mon May 25 16:08:50 2020 +0000
Revision:
206:83edda283d90
Parent:
167:8aa3fb2a5a31 
Pick up a change in the touch ISR to pick up the final release.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WiredHome 167:8aa3fb2a5a31 1 /// @page TinyJPEGDecompressor_Copyright Tiny JPEG Decompressor
WiredHome 167:8aa3fb2a5a31 2 ///
WiredHome 167:8aa3fb2a5a31 3 /// TJpgDec - Tiny JPEG Decompressor R0.01b (C)ChaN, 2012
WiredHome 167:8aa3fb2a5a31 4 ///-----------------------------------------------------------------------------/
WiredHome 167:8aa3fb2a5a31 5 /// The TJpgDec is a generic JPEG decompressor module for tiny embedded systems.
WiredHome 167:8aa3fb2a5a31 6 /// This is a free software that opened for education, research and commercial
WiredHome 167:8aa3fb2a5a31 7 /// developments under license policy of following terms.
WiredHome 167:8aa3fb2a5a31 8 ///
WiredHome 167:8aa3fb2a5a31 9 /// @copyright © 2012, ChaN, all right reserved.
WiredHome 115:c9862fd0c689 10 ///
WiredHome 167:8aa3fb2a5a31 11 /// * The TJpgDec module is a free software and there is NO WARRANTY.
WiredHome 167:8aa3fb2a5a31 12 /// * No restriction on use. You can use, modify and redistribute it for
WiredHome 167:8aa3fb2a5a31 13 /// personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
WiredHome 167:8aa3fb2a5a31 14 /// * Redistributions of source code must retain the above copyright notice.
WiredHome 167:8aa3fb2a5a31 15 ///
WiredHome 167:8aa3fb2a5a31 16 ///-----------------------------------------------------------------------------/
WiredHome 167:8aa3fb2a5a31 17 /// Oct 04,'11 R0.01 First release.
WiredHome 167:8aa3fb2a5a31 18 /// Feb 19,'12 R0.01a Fixed decompression fails when scan starts with an escape seq.
WiredHome 167:8aa3fb2a5a31 19 /// Sep 03,'12 R0.01b Added JD_TBLCLIP option.
WiredHome 167:8aa3fb2a5a31 20 ///----------------------------------------------------------------------------*/
WiredHome 115:c9862fd0c689 21
WiredHome 115:c9862fd0c689 22 #ifndef GraphicsDisplayJPEG_H
WiredHome 115:c9862fd0c689 23 #define GraphicsDisplayJPEG_H
WiredHome 115:c9862fd0c689 24
WiredHome 115:c9862fd0c689 25 /*----------------------------------------------------------------------------/
WiredHome 115:c9862fd0c689 26 / TJpgDec - Tiny JPEG Decompressor include file (C)ChaN, 2012
WiredHome 115:c9862fd0c689 27 /----------------------------------------------------------------------------*/
WiredHome 115:c9862fd0c689 28 #ifndef _TJPGDEC
WiredHome 115:c9862fd0c689 29 #define _TJPGDEC
WiredHome 115:c9862fd0c689 30
WiredHome 115:c9862fd0c689 31 /*---------------------------------------------------------------------------*/
WiredHome 115:c9862fd0c689 32 /* System Configurations */
WiredHome 115:c9862fd0c689 33
WiredHome 115:c9862fd0c689 34 #define JD_SZBUF 512 /* Size of stream input buffer */
WiredHome 115:c9862fd0c689 35 #define JD_FORMAT 1 /* Output pixel format 0:RGB888 (3 BYTE/pix), 1:RGB565 (1 WORD/pix) */
WiredHome 115:c9862fd0c689 36 #define JD_USE_SCALE 1 /* Use descaling feature for output */
WiredHome 115:c9862fd0c689 37 #define JD_TBLCLIP 1 /* Use table for saturation (might be a bit faster but increases 1K bytes of code size) */
WiredHome 115:c9862fd0c689 38
WiredHome 115:c9862fd0c689 39 /*---------------------------------------------------------------------------*/
WiredHome 115:c9862fd0c689 40
WiredHome 115:c9862fd0c689 41 #include "DisplayDefs.h"
WiredHome 115:c9862fd0c689 42
WiredHome 125:7a0b70f56550 43 /// Error code results for the jpeg engine
WiredHome 115:c9862fd0c689 44 typedef enum {
WiredHome 125:7a0b70f56550 45 JDR_OK = noerror, ///< 0: Succeeded
WiredHome 125:7a0b70f56550 46 JDR_INTR = external_abort, ///< 1: Interrupted by output function
WiredHome 125:7a0b70f56550 47 JDR_INP = bad_parameter, ///< 2: Device error or wrong termination of input stream
WiredHome 125:7a0b70f56550 48 JDR_MEM1 = not_enough_ram, ///< 3: Insufficient memory pool for the image
WiredHome 125:7a0b70f56550 49 JDR_MEM2 = not_enough_ram, ///< 4: Insufficient stream input buffer
WiredHome 125:7a0b70f56550 50 JDR_PAR = bad_parameter, ///< 5: Parameter error
WiredHome 125:7a0b70f56550 51 JDR_FMT1 = not_supported_format, ///< 6: Data format error (may be damaged data)
WiredHome 125:7a0b70f56550 52 JDR_FMT2 = not_supported_format, ///< 7: Right format but not supported
WiredHome 125:7a0b70f56550 53 JDR_FMT3 = not_supported_format ///< 8: Not supported JPEG standard
WiredHome 115:c9862fd0c689 54 } JRESULT;
WiredHome 115:c9862fd0c689 55
WiredHome 115:c9862fd0c689 56
WiredHome 115:c9862fd0c689 57
WiredHome 125:7a0b70f56550 58 /// Rectangular structure definition for the jpeg engine
WiredHome 115:c9862fd0c689 59 typedef struct {
WiredHome 125:7a0b70f56550 60 loc_t left; ///< left coord
WiredHome 125:7a0b70f56550 61 loc_t right; ///< right coord
WiredHome 125:7a0b70f56550 62 loc_t top; ///< top coord
WiredHome 125:7a0b70f56550 63 loc_t bottom; ///< bottom coord
WiredHome 115:c9862fd0c689 64 } JRECT;
WiredHome 115:c9862fd0c689 65
WiredHome 115:c9862fd0c689 66
WiredHome 125:7a0b70f56550 67 /// Decompressor object structure for the jpeg engine
WiredHome 125:7a0b70f56550 68 typedef struct JDEC JDEC;
WiredHome 115:c9862fd0c689 69
WiredHome 125:7a0b70f56550 70 /// Internal structure for the jpeg engine
WiredHome 115:c9862fd0c689 71 struct JDEC {
WiredHome 125:7a0b70f56550 72 uint16_t dctr; ///< Number of bytes available in the input buffer
WiredHome 125:7a0b70f56550 73 uint8_t * dptr; ///< Current data read ptr
WiredHome 125:7a0b70f56550 74 uint8_t * inbuf; ///< Bit stream input buffer
WiredHome 125:7a0b70f56550 75 uint8_t dmsk; ///< Current bit in the current read byte
WiredHome 125:7a0b70f56550 76 uint8_t scale; ///< Output scaling ratio
WiredHome 125:7a0b70f56550 77 uint8_t msx; ///< MCU size in unit of block (width, ...)
WiredHome 125:7a0b70f56550 78 uint8_t msy; ///< MCU size in unit of block (..., height)
WiredHome 125:7a0b70f56550 79 uint8_t qtid[3]; ///< Quantization table ID of each component
WiredHome 125:7a0b70f56550 80 int16_t dcv[3]; ///< Previous DC element of each component
WiredHome 125:7a0b70f56550 81 uint16_t nrst; ///< Restart inverval
WiredHome 125:7a0b70f56550 82 uint16_t width; ///< Size of the input image (pixel width, ...)
WiredHome 125:7a0b70f56550 83 uint16_t height; ///< Size of the input image (..., pixel height)
WiredHome 125:7a0b70f56550 84 uint8_t * huffbits[2][2]; ///< Huffman bit distribution tables [id][dcac]
WiredHome 125:7a0b70f56550 85 uint16_t * huffcode[2][2]; ///< Huffman code word tables [id][dcac]
WiredHome 125:7a0b70f56550 86 uint8_t * huffdata[2][2]; ///< Huffman decoded data tables [id][dcac]
WiredHome 125:7a0b70f56550 87 int32_t * qttbl[4]; ///< Dequaitizer tables [id]
WiredHome 125:7a0b70f56550 88 void * workbuf; ///< Working buffer for IDCT and RGB output
WiredHome 125:7a0b70f56550 89 uint8_t * mcubuf; ///< Working buffer for the MCU
WiredHome 125:7a0b70f56550 90 void * pool; ///< Pointer to available memory pool
WiredHome 125:7a0b70f56550 91 uint16_t sz_pool; ///< Size of momory pool (bytes available)
WiredHome 125:7a0b70f56550 92 uint16_t (*infunc)(JDEC * jd, uint8_t * buffer, uint16_t bufsize); ///< Pointer to jpeg stream input function
WiredHome 125:7a0b70f56550 93 void * device; ///< Pointer to I/O device identifiler for the session
WiredHome 115:c9862fd0c689 94 };
WiredHome 115:c9862fd0c689 95
WiredHome 115:c9862fd0c689 96
WiredHome 115:c9862fd0c689 97 #endif /* _TJPGDEC */
WiredHome 115:c9862fd0c689 98
WiredHome 115:c9862fd0c689 99 #endif // GraphicsDisplayJPEG_H