David Fletcher / Mbed 2 deprecated cc3100_Test_websock_Camera_CM4F

Port of TI's CC3100 Websock camera demo. Using FreeRTOS, mbedTLS, also parts of Arducam for cams ov5642 and 0v2640. Can also use MT9D111. Work in progress. Be warned some parts maybe a bit flacky. This is for Seeed Arch max only, for an M3, see the demo for CM3 using the 0v5642 aducam mini.

Dependencies:   mbed

camera_app/camera_app.cpp@2:b92db44a29b4, 2015-06-26 (annotated)

Committer:
dflet
Date:
Fri Jun 26 16:49:04 2015 +0000
Revision:
2:b92db44a29b4
Parent:
1:1a80c1529aa3
Child:
3:7643714ec664
WIP commit 2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dflet 0:50cedd586816 1 //*****************************************************************************
dflet 0:50cedd586816 2 // camera_app.c
dflet 0:50cedd586816 3 //
dflet 0:50cedd586816 4 // camera application macro & APIs
dflet 0:50cedd586816 5 //
dflet 0:50cedd586816 6 // Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
dflet 0:50cedd586816 7 //
dflet 0:50cedd586816 8 //
dflet 0:50cedd586816 9 // Redistribution and use in source and binary forms, with or without
dflet 0:50cedd586816 10 // modification, are permitted provided that the following conditions
dflet 0:50cedd586816 11 // are met:
dflet 0:50cedd586816 12 //
dflet 0:50cedd586816 13 // Redistributions of source code must retain the above copyright
dflet 0:50cedd586816 14 // notice, this list of conditions and the following disclaimer.
dflet 0:50cedd586816 15 //
dflet 0:50cedd586816 16 // Redistributions in binary form must reproduce the above copyright
dflet 0:50cedd586816 17 // notice, this list of conditions and the following disclaimer in the
dflet 0:50cedd586816 18 // documentation and/or other materials provided with the
dflet 0:50cedd586816 19 // distribution.
dflet 0:50cedd586816 20 //
dflet 0:50cedd586816 21 // Neither the name of Texas Instruments Incorporated nor the names of
dflet 0:50cedd586816 22 // its contributors may be used to endorse or promote products derived
dflet 0:50cedd586816 23 // from this software without specific prior written permission.
dflet 0:50cedd586816 24 //
dflet 0:50cedd586816 25 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
dflet 0:50cedd586816 26 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
dflet 0:50cedd586816 27 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
dflet 0:50cedd586816 28 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
dflet 0:50cedd586816 29 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
dflet 0:50cedd586816 30 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
dflet 0:50cedd586816 31 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
dflet 0:50cedd586816 32 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
dflet 0:50cedd586816 33 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
dflet 0:50cedd586816 34 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
dflet 0:50cedd586816 35 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
dflet 0:50cedd586816 36 //
dflet 0:50cedd586816 37 //*****************************************************************************
dflet 0:50cedd586816 38 //*****************************************************************************
dflet 0:50cedd586816 39 //
dflet 0:50cedd586816 40 //! \addtogroup camera_app
dflet 0:50cedd586816 41 //! @{
dflet 0:50cedd586816 42 //
dflet 0:50cedd586816 43 //*****************************************************************************
dflet 0:50cedd586816 44 #include "mbed.h"
dflet 0:50cedd586816 45 #include <stdio.h>
dflet 0:50cedd586816 46 #include <string.h>
dflet 0:50cedd586816 47 #include <stdlib.h>
dflet 0:50cedd586816 48
dflet 0:50cedd586816 49 // SimpleLink include
dflet 0:50cedd586816 50 #include "cc3100_simplelink.h"
dflet 0:50cedd586816 51
dflet 0:50cedd586816 52 #include "camera_app.h"
dflet 0:50cedd586816 53
dflet 0:50cedd586816 54 #include "mt9d111.h"
dflet 0:50cedd586816 55 #include "i2cconfig.h"
dflet 0:50cedd586816 56 #include "cli_uart.h"
dflet 0:50cedd586816 57
dflet 0:50cedd586816 58 using namespace mbed_cc3100;
dflet 0:50cedd586816 59
dflet 0:50cedd586816 60 #define ENABLE_JPEG
dflet 0:50cedd586816 61
dflet 0:50cedd586816 62 //*****************************************************************************
dflet 0:50cedd586816 63 // Macros
dflet 0:50cedd586816 64 //*****************************************************************************
dflet 0:50cedd586816 65 #define USER_FILE_NAME "www/images/cc3200_camera_capture.jpg"
dflet 0:50cedd586816 66 #define TOTAL_DMA_ELEMENTS 64
dflet 0:50cedd586816 67 #define AP_SSID_LEN_MAX (33)
dflet 0:50cedd586816 68 #define ROLE_INVALID (-5)
dflet 0:50cedd586816 69 //*****************************************************************************
dflet 0:50cedd586816 70 // GLOBAL VARIABLES
dflet 0:50cedd586816 71 //*****************************************************************************
dflet 0:50cedd586816 72 unsigned int g_frame_size_in_bytes;
dflet 0:50cedd586816 73 unsigned int g_uiDeviceModeConfig = ROLE_AP; //default is AP mode
dflet 0:50cedd586816 74 extern volatile unsigned char g_CaptureImage;
dflet 0:50cedd586816 75 extern int g_uiIpObtained = 0;
dflet 0:50cedd586816 76 extern int g_uiSimplelinkRole = ROLE_INVALID;
dflet 0:50cedd586816 77 unsigned int g_uiIpAddress = 0;
dflet 0:50cedd586816 78 static unsigned int *p_buffer = NULL;
dflet 0:50cedd586816 79 static unsigned char g_dma_txn_done;
dflet 0:50cedd586816 80 volatile static unsigned char g_frame_end;
dflet 0:50cedd586816 81 static unsigned int g_total_dma_intrpts;
dflet 0:50cedd586816 82
dflet 0:50cedd586816 83 #ifdef ENABLE_JPEG
dflet 0:50cedd586816 84 int PIXELS_IN_X_AXIS = 640;
dflet 0:50cedd586816 85 int PIXELS_IN_Y_AXIS = 480;
dflet 0:50cedd586816 86 int FRAME_SIZE_IN_BYTES = (640 * 480 * 2);
dflet 0:50cedd586816 87 #else
dflet 0:50cedd586816 88 int PIXELS_IN_X_AXIS = 240;
dflet 0:50cedd586816 89 int PIXELS_IN_Y_AXIS = 256;
dflet 0:50cedd586816 90 #endif
dflet 0:50cedd586816 91
dflet 0:50cedd586816 92 #ifdef ENABLE_JPEG
dflet 0:50cedd586816 93 unsigned int g_header_length;
dflet 0:50cedd586816 94 #endif
dflet 0:50cedd586816 95
dflet 0:50cedd586816 96 struct ImageBuffer
dflet 0:50cedd586816 97 {
dflet 0:50cedd586816 98 #ifdef ENABLE_JPEG
dflet 0:50cedd586816 99 char g_header[SMTP_BUF_LEN] /*= {'\0'}*/;
dflet 0:50cedd586816 100 #endif
dflet 0:50cedd586816 101 unsigned int g_image_buffer[NUM_OF_4B_CHUNKS];
dflet 0:50cedd586816 102 };
dflet 0:50cedd586816 103
dflet 0:50cedd586816 104 ImageBuffer g_image;
dflet 0:50cedd586816 105
dflet 0:50cedd586816 106 typedef enum pictureRequest{
dflet 0:50cedd586816 107 NO_PICTURE = 0x00,
dflet 0:50cedd586816 108 SINGLE_HIGH_RESOLUTION = 0x01,
dflet 0:50cedd586816 109 STREAM_LOW_RESOLUTION = 0x02
dflet 0:50cedd586816 110
dflet 0:50cedd586816 111 }e_pictureRequest;
dflet 0:50cedd586816 112
dflet 0:50cedd586816 113 typedef enum pictureFormat{
dflet 0:50cedd586816 114 RAW_10BIT = 0,
dflet 0:50cedd586816 115 ITU_R_BT601,
dflet 0:50cedd586816 116 YCbCr_4_2_2,
dflet 0:50cedd586816 117 YCbCr_4_2_0,
dflet 0:50cedd586816 118 RGB_565,
dflet 0:50cedd586816 119 RGB_555,
dflet 0:50cedd586816 120 RGB_444
dflet 0:50cedd586816 121
dflet 0:50cedd586816 122 }e_pictureFormat;
dflet 0:50cedd586816 123
dflet 0:50cedd586816 124 typedef enum pictureResolution{
dflet 0:50cedd586816 125 QVGA = 0,
dflet 0:50cedd586816 126 VGA,
dflet 0:50cedd586816 127 SVGA,
dflet 0:50cedd586816 128 XGA,
dflet 0:50cedd586816 129 uXGA
dflet 0:50cedd586816 130
dflet 0:50cedd586816 131 }e_pictureResolution;
dflet 0:50cedd586816 132
dflet 0:50cedd586816 133
dflet 0:50cedd586816 134 #ifdef ENABLE_JPEG
dflet 0:50cedd586816 135 #define FORMAT_YCBCR422 0
dflet 0:50cedd586816 136 #define FORMAT_YCBCR420 1
dflet 0:50cedd586816 137 #define FORMAT_MONOCHROME 2
dflet 0:50cedd586816 138
dflet 0:50cedd586816 139 unsigned char JPEG_StdQuantTblY[64] =
dflet 0:50cedd586816 140 {
dflet 0:50cedd586816 141 16, 11, 10, 16, 24, 40, 51, 61,
dflet 0:50cedd586816 142 12, 12, 14, 19, 26, 58, 60, 55,
dflet 0:50cedd586816 143 14, 13, 16, 24, 40, 57, 69, 56,
dflet 0:50cedd586816 144 14, 17, 22, 29, 51, 87, 80, 62,
dflet 0:50cedd586816 145 18, 22, 37, 56, 68, 109, 103, 77,
dflet 0:50cedd586816 146 24, 35, 55, 64, 81, 104, 113, 92,
dflet 0:50cedd586816 147 49, 64, 78, 87, 103, 121, 120, 101,
dflet 0:50cedd586816 148 72, 92, 95, 98, 112, 100, 103, 99
dflet 0:50cedd586816 149 };
dflet 0:50cedd586816 150
dflet 0:50cedd586816 151 unsigned char JPEG_StdQuantTblC[64] =
dflet 0:50cedd586816 152 {
dflet 0:50cedd586816 153 17, 18, 24, 47, 99, 99, 99, 99,
dflet 0:50cedd586816 154 18, 21, 26, 66, 99, 99, 99, 99,
dflet 0:50cedd586816 155 24, 26, 56, 99, 99, 99, 99, 99,
dflet 0:50cedd586816 156 47, 66, 99, 99, 99, 99, 99, 99,
dflet 0:50cedd586816 157 99, 99, 99, 99, 99, 99, 99, 99,
dflet 0:50cedd586816 158 99, 99, 99, 99, 99, 99, 99, 99,
dflet 0:50cedd586816 159 99, 99, 99, 99, 99, 99, 99, 99,
dflet 0:50cedd586816 160 99, 99, 99, 99, 99, 99, 99, 99
dflet 0:50cedd586816 161 };
dflet 0:50cedd586816 162 //
dflet 0:50cedd586816 163 // This table is used for regular-position to zigzagged-position lookup
dflet 0:50cedd586816 164 // This is Figure A.6 from the ISO/IEC 10918-1 1993 specification
dflet 0:50cedd586816 165 //
dflet 0:50cedd586816 166 static unsigned char zigzag[64] =
dflet 0:50cedd586816 167 {
dflet 0:50cedd586816 168 0, 1, 5, 6,14,15,27,28,
dflet 0:50cedd586816 169 2, 4, 7,13,16,26,29,42,
dflet 0:50cedd586816 170 3, 8,12,17,25,30,41,43,
dflet 0:50cedd586816 171 9,11,18,24,31,40,44,53,
dflet 0:50cedd586816 172 10,19,23,32,39,45,52,54,
dflet 0:50cedd586816 173 20,22,33,38,46,51,55,60,
dflet 0:50cedd586816 174 21,34,37,47,50,56,59,61,
dflet 0:50cedd586816 175 35,36,48,49,57,58,62,63
dflet 0:50cedd586816 176 };
dflet 0:50cedd586816 177
dflet 0:50cedd586816 178 unsigned int JPEG_StdHuffmanTbl[384] =
dflet 0:50cedd586816 179 {
dflet 0:50cedd586816 180 0x100, 0x101, 0x204, 0x30b, 0x41a, 0x678, 0x7f8, 0x9f6,
dflet 0:50cedd586816 181 0xf82, 0xf83, 0x30c, 0x41b, 0x679, 0x8f6, 0xaf6, 0xf84,
dflet 0:50cedd586816 182 0xf85, 0xf86, 0xf87, 0xf88, 0x41c, 0x7f9, 0x9f7, 0xbf4,
dflet 0:50cedd586816 183 0xf89, 0xf8a, 0xf8b, 0xf8c, 0xf8d, 0xf8e, 0x53a, 0x8f7,
dflet 0:50cedd586816 184 0xbf5, 0xf8f, 0xf90, 0xf91, 0xf92, 0xf93, 0xf94, 0xf95,
dflet 0:50cedd586816 185 0x53b, 0x9f8, 0xf96, 0xf97, 0xf98, 0xf99, 0xf9a, 0xf9b,
dflet 0:50cedd586816 186 0xf9c, 0xf9d, 0x67a, 0xaf7, 0xf9e, 0xf9f, 0xfa0, 0xfa1,
dflet 0:50cedd586816 187 0xfa2, 0xfa3, 0xfa4, 0xfa5, 0x67b, 0xbf6, 0xfa6, 0xfa7,
dflet 0:50cedd586816 188 0xfa8, 0xfa9, 0xfaa, 0xfab, 0xfac, 0xfad, 0x7fa, 0xbf7,
dflet 0:50cedd586816 189 0xfae, 0xfaf, 0xfb0, 0xfb1, 0xfb2, 0xfb3, 0xfb4, 0xfb5,
dflet 0:50cedd586816 190 0x8f8, 0xec0, 0xfb6, 0xfb7, 0xfb8, 0xfb9, 0xfba, 0xfbb,
dflet 0:50cedd586816 191 0xfbc, 0xfbd, 0x8f9, 0xfbe, 0xfbf, 0xfc0, 0xfc1, 0xfc2,
dflet 0:50cedd586816 192 0xfc3, 0xfc4, 0xfc5, 0xfc6, 0x8fa, 0xfc7, 0xfc8, 0xfc9,
dflet 0:50cedd586816 193 0xfca, 0xfcb, 0xfcc, 0xfcd, 0xfce, 0xfcf, 0x9f9, 0xfd0,
dflet 0:50cedd586816 194 0xfd1, 0xfd2, 0xfd3, 0xfd4, 0xfd5, 0xfd6, 0xfd7, 0xfd8,
dflet 0:50cedd586816 195 0x9fa, 0xfd9, 0xfda, 0xfdb, 0xfdc, 0xfdd, 0xfde, 0xfdf,
dflet 0:50cedd586816 196 0xfe0, 0xfe1, 0xaf8, 0xfe2, 0xfe3, 0xfe4, 0xfe5, 0xfe6,
dflet 0:50cedd586816 197 0xfe7, 0xfe8, 0xfe9, 0xfea, 0xfeb, 0xfec, 0xfed, 0xfee,
dflet 0:50cedd586816 198 0xfef, 0xff0, 0xff1, 0xff2, 0xff3, 0xff4, 0xff5, 0xff6,
dflet 0:50cedd586816 199 0xff7, 0xff8, 0xff9, 0xffa, 0xffb, 0xffc, 0xffd, 0xffe,
dflet 0:50cedd586816 200 0x30a, 0xaf9, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
dflet 0:50cedd586816 201 0xfd0, 0xfd1, 0xfd2, 0xfd3, 0xfd4, 0xfd5, 0xfd6, 0xfd7,
dflet 0:50cedd586816 202 0x101, 0x204, 0x30a, 0x418, 0x419, 0x538, 0x678, 0x8f4,
dflet 0:50cedd586816 203 0x9f6, 0xbf4, 0x30b, 0x539, 0x7f6, 0x8f5, 0xaf6, 0xbf5,
dflet 0:50cedd586816 204 0xf88, 0xf89, 0xf8a, 0xf8b, 0x41a, 0x7f7, 0x9f7, 0xbf6,
dflet 0:50cedd586816 205 0xec2, 0xf8c, 0xf8d, 0xf8e, 0xf8f, 0xf90, 0x41b, 0x7f8,
dflet 0:50cedd586816 206 0x9f8, 0xbf7, 0xf91, 0xf92, 0xf93, 0xf94, 0xf95, 0xf96,
dflet 0:50cedd586816 207 0x53a, 0x8f6, 0xf97, 0xf98, 0xf99, 0xf9a, 0xf9b, 0xf9c,
dflet 0:50cedd586816 208 0xf9d, 0xf9e, 0x53b, 0x9f9, 0xf9f, 0xfa0, 0xfa1, 0xfa2,
dflet 0:50cedd586816 209 0xfa3, 0xfa4, 0xfa5, 0xfa6, 0x679, 0xaf7, 0xfa7, 0xfa8,
dflet 0:50cedd586816 210 0xfa9, 0xfaa, 0xfab, 0xfac, 0xfad, 0xfae, 0x67a, 0xaf8,
dflet 0:50cedd586816 211 0xfaf, 0xfb0, 0xfb1, 0xfb2, 0xfb3, 0xfb4, 0xfb5, 0xfb6,
dflet 0:50cedd586816 212 0x7f9, 0xfb7, 0xfb8, 0xfb9, 0xfba, 0xfbb, 0xfbc, 0xfbd,
dflet 0:50cedd586816 213 0xfbe, 0xfbf, 0x8f7, 0xfc0, 0xfc1, 0xfc2, 0xfc3, 0xfc4,
dflet 0:50cedd586816 214 0xfc5, 0xfc6, 0xfc7, 0xfc8, 0x8f8, 0xfc9, 0xfca, 0xfcb,
dflet 0:50cedd586816 215 0xfcc, 0xfcd, 0xfce, 0xfcf, 0xfd0, 0xfd1, 0x8f9, 0xfd2,
dflet 0:50cedd586816 216 0xfd3, 0xfd4, 0xfd5, 0xfd6, 0xfd7, 0xfd8, 0xfd9, 0xfda,
dflet 0:50cedd586816 217 0x8fa, 0xfdb, 0xfdc, 0xfdd, 0xfde, 0xfdf, 0xfe0, 0xfe1,
dflet 0:50cedd586816 218 0xfe2, 0xfe3, 0xaf9, 0xfe4, 0xfe5, 0xfe6, 0xfe7, 0xfe8,
dflet 0:50cedd586816 219 0xfe9, 0xfea, 0xfeb, 0xfec, 0xde0, 0xfed, 0xfee, 0xfef,
dflet 0:50cedd586816 220 0xff0, 0xff1, 0xff2, 0xff3, 0xff4, 0xff5, 0xec3, 0xff6,
dflet 0:50cedd586816 221 0xff7, 0xff8, 0xff9, 0xffa, 0xffb, 0xffc, 0xffd, 0xffe,
dflet 0:50cedd586816 222 0x100, 0x9fa, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
dflet 0:50cedd586816 223 0xfd0, 0xfd1, 0xfd2, 0xfd3, 0xfd4, 0xfd5, 0xfd6, 0xfd7,
dflet 0:50cedd586816 224 0x100, 0x202, 0x203, 0x204, 0x205, 0x206, 0x30e, 0x41e,
dflet 0:50cedd586816 225 0x53e, 0x67e, 0x7fe, 0x8fe, 0xfff, 0xfff, 0xfff, 0xfff,
dflet 0:50cedd586816 226 0x100, 0x101, 0x102, 0x206, 0x30e, 0x41e, 0x53e, 0x67e,
dflet 0:50cedd586816 227 0x7fe, 0x8fe, 0x9fe, 0xafe, 0xfff, 0xfff, 0xfff, 0xfff
dflet 0:50cedd586816 228 };
dflet 0:50cedd586816 229 #endif
dflet 0:50cedd586816 230 /****************************************************************************/
dflet 0:50cedd586816 231 /* LOCAL FUNCTION PROTOTYPES */
dflet 0:50cedd586816 232 /****************************************************************************/
dflet 0:50cedd586816 233 static void CamControllerInit();
dflet 0:50cedd586816 234 static void CameraIntHandler();
dflet 0:50cedd586816 235 static unsigned short CaptureImage(char **WriteBuffer);
dflet 0:50cedd586816 236 static void DMAConfig();
dflet 0:50cedd586816 237
dflet 0:50cedd586816 238 #ifdef ENABLE_JPEG
dflet 0:50cedd586816 239 static int CreateJpegHeader(char *header, int width, int height,
dflet 0:50cedd586816 240 int format, int restart_int, int qscale);
dflet 0:50cedd586816 241 static int DefineRestartIntervalMarker(char *pbuf, int ri);
dflet 0:50cedd586816 242 static int DefineHuffmanTableMarkerAC(char *pbuf, unsigned int *htable, int class_id);
dflet 0:50cedd586816 243 static int DefineHuffmanTableMarkerDC(char *pbuf, unsigned int *htable, int class_id);
dflet 0:50cedd586816 244 static int DefineQuantizationTableMarker (unsigned char *pbuf, int qscale, int format);
dflet 0:50cedd586816 245 static int ScanHeaderMarker(char *pbuf, int format);
dflet 0:50cedd586816 246 static int FrameHeaderMarker(char *pbuf, int width, int height, int format);
dflet 0:50cedd586816 247 static int JfifApp0Marker(char *pbuf);
dflet 0:50cedd586816 248 #endif
dflet 0:50cedd586816 249
dflet 0:50cedd586816 250 //*****************************************************************************
dflet 0:50cedd586816 251 //
dflet 0:50cedd586816 252 //! Start Camera
dflet 0:50cedd586816 253 //! 1. Establishes connection w/ AP//
dflet 0:50cedd586816 254 //! 2. Initializes the camera sub-components//! GPIO Enable & Configuration
dflet 0:50cedd586816 255 //! 3. Listens and processes the image capture requests from user-applications
dflet 0:50cedd586816 256 //!
dflet 0:50cedd586816 257 //! \param[out] WriteBuffer - Pointer to the Frame Buffer
dflet 0:50cedd586816 258 //! \return None
dflet 0:50cedd586816 259 //
dflet 0:50cedd586816 260 //*****************************************************************************
dflet 0:50cedd586816 261
dflet 0:50cedd586816 262 unsigned short StartCamera(char **WriteBuffer)
dflet 0:50cedd586816 263 {
dflet 0:50cedd586816 264 Uart_Write((uint8_t*)"StartCamera \n\r");
dflet 0:50cedd586816 265 unsigned short Writelength;
dflet 0:50cedd586816 266 //
dflet 0:50cedd586816 267 // Waits in the below loop till Capture button is pressed
dflet 0:50cedd586816 268 //
dflet 0:50cedd586816 269 Writelength = CaptureImage(WriteBuffer);
dflet 0:50cedd586816 270
dflet 0:50cedd586816 271 return(Writelength);
dflet 0:50cedd586816 272
dflet 0:50cedd586816 273 }
dflet 0:50cedd586816 274 //*****************************************************************************
dflet 0:50cedd586816 275 //
dflet 0:50cedd586816 276 //! InitCameraComponents
dflet 0:50cedd586816 277 //! PinMux, Camera Initialization and Configuration
dflet 0:50cedd586816 278 //!
dflet 0:50cedd586816 279 //! \param[in] width - X-Axis
dflet 0:50cedd586816 280 //! \param[in] width - Y-Axis
dflet 0:50cedd586816 281 //! \return None
dflet 0:50cedd586816 282 //
dflet 0:50cedd586816 283 //*****************************************************************************
dflet 0:50cedd586816 284
dflet 0:50cedd586816 285 void InitCameraComponents(int width, int height)
dflet 0:50cedd586816 286 {
dflet 0:50cedd586816 287 Uart_Write((uint8_t*)"InitCameraComponents \n\r");
dflet 0:50cedd586816 288 //
dflet 0:50cedd586816 289 // Initialize I2C Interface
dflet 0:50cedd586816 290 //
dflet 0:50cedd586816 291 I2CInit();
dflet 0:50cedd586816 292 //
dflet 0:50cedd586816 293 // Initialize camera controller
dflet 0:50cedd586816 294 //
dflet 0:50cedd586816 295 CamControllerInit();
dflet 0:50cedd586816 296 //
dflet 0:50cedd586816 297 // Initialize camera sensor
dflet 0:50cedd586816 298 //
dflet 0:50cedd586816 299 CameraSensorInit();
dflet 0:50cedd586816 300
dflet 0:50cedd586816 301 #ifdef ENABLE_JPEG
dflet 0:50cedd586816 302 //
dflet 0:50cedd586816 303 // Configure Sensor in Capture Mode
dflet 0:50cedd586816 304 //
dflet 0:50cedd586816 305 PIXELS_IN_X_AXIS = width;
dflet 0:50cedd586816 306 PIXELS_IN_Y_AXIS = height;
dflet 0:50cedd586816 307 FRAME_SIZE_IN_BYTES = PIXELS_IN_X_AXIS * PIXELS_IN_Y_AXIS * BYTES_PER_PIXEL;
dflet 0:50cedd586816 308
dflet 0:50cedd586816 309 StartSensorInJpegMode(width, height);
dflet 0:50cedd586816 310
dflet 0:50cedd586816 311 #endif
dflet 0:50cedd586816 312 }
dflet 0:50cedd586816 313
dflet 0:50cedd586816 314 //*****************************************************************************
dflet 0:50cedd586816 315 //
dflet 0:50cedd586816 316 //! Set resolution of camera
dflet 0:50cedd586816 317 //!
dflet 0:50cedd586816 318 //! \param[in] width - X Axis
dflet 0:50cedd586816 319 //! \param[in] height - Y Axis
dflet 0:50cedd586816 320 //! \return 0 on success else -ve
dflet 0:50cedd586816 321 //
dflet 0:50cedd586816 322 //*****************************************************************************
dflet 0:50cedd586816 323
dflet 0:50cedd586816 324 int SetCameraResolution(int width, int height)
dflet 0:50cedd586816 325 {
dflet 0:50cedd586816 326 Uart_Write((uint8_t*)"SetCameraResolution \n\r");
dflet 0:50cedd586816 327 int lRetVal = 0;
dflet 0:50cedd586816 328
dflet 0:50cedd586816 329 PIXELS_IN_X_AXIS = width;
dflet 0:50cedd586816 330 PIXELS_IN_Y_AXIS = height;
dflet 0:50cedd586816 331 FRAME_SIZE_IN_BYTES = PIXELS_IN_X_AXIS * PIXELS_IN_Y_AXIS * BYTES_PER_PIXEL;
dflet 0:50cedd586816 332 lRetVal = CameraSensorResolution(width, height);
dflet 0:50cedd586816 333 return lRetVal;
dflet 0:50cedd586816 334 }
dflet 0:50cedd586816 335
dflet 0:50cedd586816 336 //*****************************************************************************
dflet 0:50cedd586816 337 //
dflet 0:50cedd586816 338 //! CaptureImage
dflet 0:50cedd586816 339 //! Configures DMA and starts the Capture. Post Capture writes to SFLASH
dflet 0:50cedd586816 340 //!
dflet 0:50cedd586816 341 //! \param None
dflet 0:50cedd586816 342 //! \return None
dflet 0:50cedd586816 343 //!
dflet 0:50cedd586816 344 //
dflet 0:50cedd586816 345 //*****************************************************************************
dflet 0:50cedd586816 346
dflet 0:50cedd586816 347 static unsigned short CaptureImage(char** WriteBuffer)
dflet 0:50cedd586816 348 {
dflet 0:50cedd586816 349 Uart_Write((uint8_t*)"CaptureImage \n\r");
dflet 1:1a80c1529aa3 350 DCMI_HandleTypeDef hdcmi;
dflet 1:1a80c1529aa3 351 DMA_HandleTypeDef hdma_dcmi;
dflet 2:b92db44a29b4 352 memset(g_image.g_image_buffer,0xF80F,sizeof(g_image.g_image_buffer));
dflet 2:b92db44a29b4 353 p_buffer = &(g_image.g_image_buffer[0]);
dflet 0:50cedd586816 354
dflet 0:50cedd586816 355 DMAConfig();
dflet 0:50cedd586816 356
dflet 0:50cedd586816 357 //
dflet 0:50cedd586816 358 // Perform Image Capture
dflet 0:50cedd586816 359 //
dflet 2:b92db44a29b4 360 Uart_Write((uint8_t*)"CaptureImage Start\n\r");
dflet 2:b92db44a29b4 361 HAL_DCMI_Start_DMA(&hdcmi, DCMI_MODE_SNAPSHOT, (uint32_t)p_buffer, sizeof(g_image.g_image_buffer));
dflet 2:b92db44a29b4 362
dflet 2:b92db44a29b4 363 /* Wait for frame */
dflet 2:b92db44a29b4 364 while ((DCMI->CR & DCMI_CR_CAPTURE) != 0) {
dflet 2:b92db44a29b4 365
dflet 2:b92db44a29b4 366 }
dflet 2:b92db44a29b4 367 g_frame_end = 1;
dflet 2:b92db44a29b4 368
dflet 2:b92db44a29b4 369 Uart_Write((uint8_t*)"CaptureImage Complete\n\r");
dflet 2:b92db44a29b4 370 /* The frame is finished, but DMA still waiting
dflet 2:b92db44a29b4 371 for data because we set max frame size
dflet 2:b92db44a29b4 372 so we need to abort the DMA transfer here */
dflet 2:b92db44a29b4 373 HAL_DMA_Abort(&hdma_dcmi);//need this???
dflet 2:b92db44a29b4 374
dflet 2:b92db44a29b4 375 /* Read the number of data items transferred */
dflet 2:b92db44a29b4 376 uint16_t image_size = (FRAME_SIZE_IN_BYTES - hdma_dcmi.Instance->NDTR)*4;
dflet 0:50cedd586816 377
dflet 0:50cedd586816 378 //
dflet 0:50cedd586816 379 // Create JPEG Header
dflet 0:50cedd586816 380 //
dflet 0:50cedd586816 381 #ifdef ENABLE_JPEG
dflet 0:50cedd586816 382 memset(g_image.g_header, '\0', sizeof(g_image.g_header));
dflet 0:50cedd586816 383 g_header_length = CreateJpegHeader((char *)&(g_image.g_header[0]), PIXELS_IN_X_AXIS,
dflet 0:50cedd586816 384 PIXELS_IN_Y_AXIS, 0, 0x0020, 9);
dflet 0:50cedd586816 385
dflet 0:50cedd586816 386 // This loop pushes the header to the end of the array so that the entire picture can be contiguous in memory
dflet 0:50cedd586816 387 unsigned short shift;
dflet 0:50cedd586816 388
dflet 0:50cedd586816 389 for(shift=1; shift <= g_header_length; shift++)
dflet 0:50cedd586816 390 {
dflet 0:50cedd586816 391 g_image.g_header[SMTP_BUF_LEN - shift] = g_image.g_header[g_header_length - shift];
dflet 0:50cedd586816 392
dflet 0:50cedd586816 393 }
dflet 0:50cedd586816 394 #endif
dflet 0:50cedd586816 395 *WriteBuffer = &(g_image.g_header[SMTP_BUF_LEN - g_header_length]);
dflet 0:50cedd586816 396
dflet 0:50cedd586816 397 return(g_header_length + g_frame_size_in_bytes);
dflet 0:50cedd586816 398 }
dflet 0:50cedd586816 399 //*****************************************************************************
dflet 0:50cedd586816 400 //
dflet 0:50cedd586816 401 //! DMA Config
dflet 0:50cedd586816 402 //! Initialize the DMA and Setup the DMA transfer
dflet 0:50cedd586816 403 //!
dflet 0:50cedd586816 404 //! \param None
dflet 0:50cedd586816 405 //! \return None
dflet 0:50cedd586816 406 //
dflet 0:50cedd586816 407 //*****************************************************************************
dflet 0:50cedd586816 408 static void DMAConfig()
dflet 0:50cedd586816 409 {
dflet 0:50cedd586816 410 Uart_Write((uint8_t*)"DMAConfig \n\r");
dflet 2:b92db44a29b4 411 // memset(g_image.g_image_buffer,0xF80F,sizeof(g_image.g_image_buffer));
dflet 2:b92db44a29b4 412 // p_buffer = &(g_image.g_image_buffer[0]);
dflet 0:50cedd586816 413 //
dflet 0:50cedd586816 414 // Initilalize DMA
dflet 0:50cedd586816 415 //
dflet 0:50cedd586816 416 // UDMAInit();
dflet 0:50cedd586816 417 //
dflet 0:50cedd586816 418 // Setup ping-pong transfer
dflet 0:50cedd586816 419 //
dflet 0:50cedd586816 420 // UDMASetupTransfer(UDMA_CH22_CAMERA,UDMA_MODE_PINGPONG,TOTAL_DMA_ELEMENTS,UDMA_SIZE_32,
dflet 0:50cedd586816 421 // UDMA_ARB_8,(void *)CAM_BUFFER_ADDR, UDMA_SRC_INC_32,
dflet 0:50cedd586816 422 // (void *)p_buffer, UDMA_DST_INC_32);
dflet 0:50cedd586816 423 //
dflet 0:50cedd586816 424 // Pong Buffer
dflet 0:50cedd586816 425 //
dflet 2:b92db44a29b4 426 // p_buffer += TOTAL_DMA_ELEMENTS;
dflet 0:50cedd586816 427 // UDMASetupTransfer(UDMA_CH22_CAMERA|UDMA_ALT_SELECT,UDMA_MODE_PINGPONG,TOTAL_DMA_ELEMENTS,
dflet 0:50cedd586816 428 // UDMA_SIZE_32, UDMA_ARB_8,(void *)CAM_BUFFER_ADDR,
dflet 0:50cedd586816 429 // UDMA_SRC_INC_32, (void *)p_buffer, UDMA_DST_INC_32);
dflet 0:50cedd586816 430 //
dflet 0:50cedd586816 431 // Ping Buffer
dflet 0:50cedd586816 432 //
dflet 2:b92db44a29b4 433 // p_buffer += TOTAL_DMA_ELEMENTS;
dflet 0:50cedd586816 434
dflet 0:50cedd586816 435 g_dma_txn_done = 0;
dflet 0:50cedd586816 436 g_frame_size_in_bytes = 0;
dflet 0:50cedd586816 437 g_frame_end = 0;
dflet 0:50cedd586816 438 g_total_dma_intrpts = 0;
dflet 0:50cedd586816 439
dflet 0:50cedd586816 440 //
dflet 0:50cedd586816 441 // Clear any pending interrupt
dflet 0:50cedd586816 442 //
dflet 0:50cedd586816 443 // CameraIntClear(CAMERA_BASE,CAM_INT_DMA);
dflet 0:50cedd586816 444
dflet 0:50cedd586816 445 //
dflet 0:50cedd586816 446 // DMA Interrupt unmask from apps config
dflet 0:50cedd586816 447 //
dflet 0:50cedd586816 448 // CameraIntEnable(CAMERA_BASE,CAM_INT_DMA);
dflet 0:50cedd586816 449 }
dflet 0:50cedd586816 450
dflet 0:50cedd586816 451 //*****************************************************************************
dflet 0:50cedd586816 452 //
dflet 0:50cedd586816 453 //! Camera Controller Initialisation
dflet 0:50cedd586816 454 //!
dflet 0:50cedd586816 455 //! \param None
dflet 0:50cedd586816 456 //! \return None
dflet 0:50cedd586816 457 //!
dflet 0:50cedd586816 458 //
dflet 0:50cedd586816 459 //*****************************************************************************
dflet 0:50cedd586816 460
dflet 0:50cedd586816 461 static void CamControllerInit()
dflet 0:50cedd586816 462 {
dflet 0:50cedd586816 463 Uart_Write((uint8_t*)"CamControllerInit \n\r");
dflet 0:50cedd586816 464 // DCMI_HandleTypeDef hdcmi;
dflet 0:50cedd586816 465 // MAP_PRCMPeripheralClkEnable(PRCM_CAMERA, PRCM_RUN_MODE_CLK);
dflet 0:50cedd586816 466 // MAP_PRCMPeripheralReset(PRCM_CAMERA);
dflet 0:50cedd586816 467
dflet 0:50cedd586816 468 #ifndef ENABLE_JPEG
dflet 0:50cedd586816 469 // Configure Camera clock
dflet 0:50cedd586816 470 // CamClkIn = ((240)/((1+1)+(1+1))) = 60 MHz
dflet 0:50cedd586816 471 // PRCMCameraFreqSet(4, 2);
dflet 0:50cedd586816 472 #else
dflet 0:50cedd586816 473 // PRCMCameraFreqSet(2,1);
dflet 0:50cedd586816 474 #endif
dflet 0:50cedd586816 475
dflet 0:50cedd586816 476 // MAP_CameraReset(CAMERA_BASE);
dflet 0:50cedd586816 477
dflet 0:50cedd586816 478 #ifndef ENABLE_JPEG
dflet 0:50cedd586816 479 // MAP_CameraParamsConfig(CAMERA_BASE, CAM_HS_POL_HI, CAM_VS_POL_HI,
dflet 0:50cedd586816 480 // CAM_ORDERCAM_SWAP|CAM_NOBT_SYNCHRO);
dflet 0:50cedd586816 481 #else
dflet 0:50cedd586816 482 // MAP_CameraParamsConfig(CAMERA_BASE, CAM_HS_POL_HI,CAM_VS_POL_HI,
dflet 0:50cedd586816 483 // CAM_NOBT_SYNCHRO|CAM_IF_SYNCHRO|CAM_BT_CORRECT_EN);
dflet 0:50cedd586816 484 #endif
dflet 0:50cedd586816 485
dflet 0:50cedd586816 486 // MAP_CameraIntRegister(CAMERA_BASE, CameraIntHandler);
dflet 0:50cedd586816 487
dflet 0:50cedd586816 488 #ifndef ENABLE_JPEG
dflet 0:50cedd586816 489 // MAP_CameraXClkConfig(CAMERA_BASE, 60000000,3750000);
dflet 0:50cedd586816 490 #else
dflet 0:50cedd586816 491 // MAP_CameraXClkConfig(CAMERA_BASE, 120000000,24000000);
dflet 0:50cedd586816 492 #endif
dflet 0:50cedd586816 493
dflet 0:50cedd586816 494 // MAP_CameraThresholdSet(CAMERA_BASE, 8);
dflet 0:50cedd586816 495 // MAP_CameraIntEnable(CAMERA_BASE, CAM_INT_FE);
dflet 0:50cedd586816 496 // MAP_CameraDMAEnable(CAMERA_BASE);
dflet 0:50cedd586816 497
dflet 0:50cedd586816 498 // hdcmi.Instance = DCMI;
dflet 0:50cedd586816 499 // hdcmi.Init.SynchroMode = DCMI_SYNCHRO_HARDWARE;
dflet 0:50cedd586816 500 // hdcmi.Init.PCKPolarity = DCMI_PCKPOLARITY_FALLING;
dflet 0:50cedd586816 501 // hdcmi.Init.VSPolarity = DCMI_VSPOLARITY_LOW;
dflet 0:50cedd586816 502 // hdcmi.Init.HSPolarity = DCMI_HSPOLARITY_LOW;
dflet 0:50cedd586816 503 // hdcmi.Init.CaptureRate = DCMI_CR_ALL_FRAME;
dflet 0:50cedd586816 504 // hdcmi.Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B;
dflet 0:50cedd586816 505 //#ifdef ENABLE_JPEG
dflet 0:50cedd586816 506 // hdcmi.Init.JPEGMode = DCMI_JPEG_ENABLE;
dflet 0:50cedd586816 507 //#else
dflet 0:50cedd586816 508 // hdcmi.Init.JPEGMode = DCMI_JPEG_DISABLE;
dflet 0:50cedd586816 509 //#endif
dflet 0:50cedd586816 510 // HAL_DCMI_Init(&hdcmi);
dflet 0:50cedd586816 511
dflet 0:50cedd586816 512 /*
dflet 0:50cedd586816 513 hdcmi.Instance = DCMI;
dflet 0:50cedd586816 514 hdcmi.Init.SynchroMode = DCMI_SYNCHRO_EMBEDDED;
dflet 0:50cedd586816 515 hdcmi.Init.PCKPolarity = DCMI_PCKPOLARITY_FALLING;
dflet 0:50cedd586816 516 hdcmi.Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B;
dflet 0:50cedd586816 517 hdcmi.Init.SyncroCode.FrameEndCode = 0;
dflet 0:50cedd586816 518 hdcmi.Init.SyncroCode.FrameStartCode = 0;
dflet 0:50cedd586816 519 hdcmi.Init.SyncroCode.LineStartCode = 0;
dflet 0:50cedd586816 520 hdcmi.Init.SyncroCode.LineEndCode = 0;
dflet 0:50cedd586816 521 HAL_DCMI_Init(&hdcmi);
dflet 0:50cedd586816 522 */
dflet 0:50cedd586816 523
dflet 0:50cedd586816 524 }
dflet 0:50cedd586816 525
dflet 0:50cedd586816 526
dflet 0:50cedd586816 527 //*****************************************************************************
dflet 0:50cedd586816 528 //
dflet 0:50cedd586816 529 //! Camera Interrupt Handler
dflet 0:50cedd586816 530 //!
dflet 0:50cedd586816 531 //! \param None
dflet 0:50cedd586816 532 //! \return None
dflet 0:50cedd586816 533 //
dflet 0:50cedd586816 534 //*****************************************************************************
dflet 0:50cedd586816 535 static void CameraIntHandler()
dflet 0:50cedd586816 536 {
dflet 0:50cedd586816 537 Uart_Write((uint8_t*)"CameraIntHandler \n\r");
dflet 1:1a80c1529aa3 538 DCMI_HandleTypeDef hdcmi;
dflet 1:1a80c1529aa3 539 DMA_HandleTypeDef hdma_dcmi;
dflet 0:50cedd586816 540 //MAP_CameraIntClear(CAMERA_BASE, CAM_INT_FE);
dflet 0:50cedd586816 541 // if(g_total_dma_intrpts > 1 && MAP_CameraIntStatus(CAMERA_BASE) & CAM_INT_FE)
dflet 0:50cedd586816 542 // {
dflet 0:50cedd586816 543 // MAP_CameraIntClear(CAMERA_BASE, CAM_INT_FE);
dflet 0:50cedd586816 544 // g_frame_end = 1;
dflet 0:50cedd586816 545 // MAP_CameraCaptureStop(CAMERA_BASE, true);
dflet 0:50cedd586816 546 // }
dflet 0:50cedd586816 547
dflet 0:50cedd586816 548 // if(CameraIntStatus(CAMERA_BASE)& CAM_INT_DMA)
dflet 0:50cedd586816 549 // {
dflet 0:50cedd586816 550 // Camera DMA Done clear
dflet 0:50cedd586816 551 // CameraIntClear(CAMERA_BASE,CAM_INT_DMA);
dflet 0:50cedd586816 552
dflet 0:50cedd586816 553 // g_total_dma_intrpts++;
dflet 0:50cedd586816 554
dflet 0:50cedd586816 555 // g_frame_size_in_bytes += (TOTAL_DMA_ELEMENTS*sizeof(unsigned long));
dflet 0:50cedd586816 556 // if(g_frame_size_in_bytes < FRAME_SIZE_IN_BYTES && g_frame_size_in_bytes < IMAGE_BUF_SIZE)
dflet 0:50cedd586816 557 // {
dflet 0:50cedd586816 558 // if(g_dma_txn_done == 0)
dflet 0:50cedd586816 559 // {
dflet 0:50cedd586816 560 // UDMASetupTransfer(UDMA_CH22_CAMERA,UDMA_MODE_PINGPONG,TOTAL_DMA_ELEMENTS,UDMA_SIZE_32,
dflet 0:50cedd586816 561 // UDMA_ARB_8,(void *)CAM_BUFFER_ADDR, UDMA_SRC_INC_32,
dflet 0:50cedd586816 562 // (void *)p_buffer, UDMA_DST_INC_32);
dflet 0:50cedd586816 563 // p_buffer += TOTAL_DMA_ELEMENTS;
dflet 0:50cedd586816 564 // g_dma_txn_done = 1;
dflet 0:50cedd586816 565 // }
dflet 0:50cedd586816 566 // else
dflet 0:50cedd586816 567 // {
dflet 0:50cedd586816 568 // UDMASetupTransfer(UDMA_CH22_CAMERA|UDMA_ALT_SELECT,UDMA_MODE_PINGPONG,TOTAL_DMA_ELEMENTS,
dflet 0:50cedd586816 569 // UDMA_SIZE_32, UDMA_ARB_8,(void *)CAM_BUFFER_ADDR,
dflet 0:50cedd586816 570 // UDMA_SRC_INC_32, (void *)p_buffer, UDMA_DST_INC_32);
dflet 0:50cedd586816 571 // p_buffer += TOTAL_DMA_ELEMENTS;
dflet 0:50cedd586816 572 // g_dma_txn_done = 0;
dflet 0:50cedd586816 573 // }
dflet 0:50cedd586816 574 // }
dflet 0:50cedd586816 575 // else
dflet 0:50cedd586816 576 // {
dflet 0:50cedd586816 577 // Disable DMA
dflet 0:50cedd586816 578 // wait_us(25);
dflet 0:50cedd586816 579 // MAP_UtilsDelay(20000);
dflet 0:50cedd586816 580 // MAP_uDMAChannelDisable(UDMA_CH22_CAMERA);
dflet 0:50cedd586816 581 // CameraIntDisable(CAMERA_BASE,CAM_INT_DMA);
dflet 0:50cedd586816 582 // g_frame_end = 1;
dflet 0:50cedd586816 583 // }
dflet 0:50cedd586816 584 // }
dflet 0:50cedd586816 585 /* Enable DMA2 stream 1 and DCMI interface then start image capture */
dflet 0:50cedd586816 586 // DMA_Cmd(DMA2_Stream1, ENABLE);
dflet 0:50cedd586816 587 // DCMI_Cmd(ENABLE);
dflet 0:50cedd586816 588
dflet 0:50cedd586816 589 /* Insert 100ms delay: wait 100ms */
dflet 0:50cedd586816 590 // wait_ms(100);
dflet 0:50cedd586816 591
dflet 1:1a80c1529aa3 592 // DCMI_CaptureCmd(ENABLE);
dflet 1:1a80c1529aa3 593 //HAL_DCMI_Start_DMA(hdcmi, DCMI_MODE_SNAPSHOT, WriteBuffer, Length)
dflet 0:50cedd586816 594 }
dflet 0:50cedd586816 595
dflet 0:50cedd586816 596 //*****************************************************************************
dflet 0:50cedd586816 597 //
dflet 0:50cedd586816 598 //! JfifApp0Marker
dflet 0:50cedd586816 599 //!
dflet 0:50cedd586816 600 //! \param Pointer to the output buffer
dflet 0:50cedd586816 601 //! \return Length of the Marker
dflet 0:50cedd586816 602 //
dflet 0:50cedd586816 603 //*****************************************************************************
dflet 0:50cedd586816 604
dflet 0:50cedd586816 605 #ifdef ENABLE_JPEG
dflet 0:50cedd586816 606 static int JfifApp0Marker(char *pbuf)
dflet 0:50cedd586816 607 {
dflet 0:50cedd586816 608 *pbuf++= 0xFF; // APP0 marker
dflet 0:50cedd586816 609 *pbuf++= 0xE0;
dflet 0:50cedd586816 610 *pbuf++= 0x00; // length
dflet 0:50cedd586816 611 *pbuf++= 0x10;
dflet 0:50cedd586816 612 *pbuf++= 0x4A; // JFIF identifier
dflet 0:50cedd586816 613 *pbuf++= 0x46;
dflet 0:50cedd586816 614 *pbuf++= 0x49;
dflet 0:50cedd586816 615 *pbuf++= 0x46;
dflet 0:50cedd586816 616 *pbuf++= 0x00;
dflet 0:50cedd586816 617 *pbuf++= 0x01; // version
dflet 0:50cedd586816 618 *pbuf++= 0x02;
dflet 0:50cedd586816 619 *pbuf++= 0x00; // units
dflet 0:50cedd586816 620 *pbuf++= 0x00; // X density
dflet 0:50cedd586816 621 *pbuf++= 0x01;
dflet 0:50cedd586816 622 *pbuf++= 0x00; // Y density
dflet 0:50cedd586816 623 *pbuf++= 0x01;
dflet 0:50cedd586816 624 *pbuf++= 0x00; // X thumbnail
dflet 0:50cedd586816 625 *pbuf++= 0x00; // Y thumbnail
dflet 0:50cedd586816 626 return 18;
dflet 0:50cedd586816 627 }
dflet 0:50cedd586816 628
dflet 0:50cedd586816 629
dflet 0:50cedd586816 630 //*****************************************************************************
dflet 0:50cedd586816 631 //
dflet 0:50cedd586816 632 //! FrameHeaderMarker
dflet 0:50cedd586816 633 //!
dflet 0:50cedd586816 634 //! \param1 pointer to the output buffer
dflet 0:50cedd586816 635 //! \param2 width
dflet 0:50cedd586816 636 //! \param3 height
dflet 0:50cedd586816 637 //! \param4 format
dflet 0:50cedd586816 638 //!
dflet 0:50cedd586816 639 //! \return Length of the header marker
dflet 0:50cedd586816 640 //
dflet 0:50cedd586816 641 //*****************************************************************************
dflet 0:50cedd586816 642 static int FrameHeaderMarker(char *pbuf, int width, int height, int format)
dflet 0:50cedd586816 643 {
dflet 0:50cedd586816 644 int length;
dflet 0:50cedd586816 645 if (format == FORMAT_MONOCHROME)
dflet 0:50cedd586816 646 length = 11;
dflet 0:50cedd586816 647 else
dflet 0:50cedd586816 648 length = 17;
dflet 0:50cedd586816 649
dflet 0:50cedd586816 650 *pbuf++= 0xFF; // start of frame: baseline DCT
dflet 0:50cedd586816 651 *pbuf++= 0xC0;
dflet 0:50cedd586816 652 *pbuf++= length>>8; // length field
dflet 0:50cedd586816 653 *pbuf++= length&0xFF;
dflet 0:50cedd586816 654 *pbuf++= 0x08; // sample precision
dflet 0:50cedd586816 655 *pbuf++= height>>8; // number of lines
dflet 0:50cedd586816 656 *pbuf++= height&0xFF;
dflet 0:50cedd586816 657 *pbuf++= width>>8; // number of samples per line
dflet 0:50cedd586816 658 *pbuf++= width&0xFF;
dflet 0:50cedd586816 659
dflet 0:50cedd586816 660 if (format == FORMAT_MONOCHROME) // monochrome
dflet 0:50cedd586816 661 {
dflet 0:50cedd586816 662 *pbuf++= 0x01; // number of image components in frame
dflet 0:50cedd586816 663 *pbuf++= 0x00; // component identifier: Y
dflet 0:50cedd586816 664 *pbuf++= 0x11; // horizontal | vertical sampling factor: Y
dflet 0:50cedd586816 665 *pbuf++= 0x00; // quantization table selector: Y
dflet 0:50cedd586816 666 }
dflet 0:50cedd586816 667 else if (format == FORMAT_YCBCR422) // YCbCr422
dflet 0:50cedd586816 668 {
dflet 0:50cedd586816 669 *pbuf++= 0x03; // number of image components in frame
dflet 0:50cedd586816 670 *pbuf++= 0x00; // component identifier: Y
dflet 0:50cedd586816 671 *pbuf++= 0x21; // horizontal | vertical sampling factor: Y
dflet 0:50cedd586816 672 *pbuf++= 0x00; // quantization table selector: Y
dflet 0:50cedd586816 673 *pbuf++= 0x01; // component identifier: Cb
dflet 0:50cedd586816 674 *pbuf++= 0x11; // horizontal | vertical sampling factor: Cb
dflet 0:50cedd586816 675 *pbuf++= 0x01; // quantization table selector: Cb
dflet 0:50cedd586816 676 *pbuf++= 0x02; // component identifier: Cr
dflet 0:50cedd586816 677 *pbuf++= 0x11; // horizontal | vertical sampling factor: Cr
dflet 0:50cedd586816 678 *pbuf++= 0x01; // quantization table selector: Cr
dflet 0:50cedd586816 679 }
dflet 0:50cedd586816 680 else // YCbCr420
dflet 0:50cedd586816 681 {
dflet 0:50cedd586816 682 *pbuf++= 0x03; // number of image components in frame
dflet 0:50cedd586816 683 *pbuf++= 0x00; // component identifier: Y
dflet 0:50cedd586816 684 *pbuf++= 0x22; // horizontal | vertical sampling factor: Y
dflet 0:50cedd586816 685 *pbuf++= 0x00; // quantization table selector: Y
dflet 0:50cedd586816 686 *pbuf++= 0x01; // component identifier: Cb
dflet 0:50cedd586816 687 *pbuf++= 0x11; // horizontal | vertical sampling factor: Cb
dflet 0:50cedd586816 688 *pbuf++= 0x01; // quantization table selector: Cb
dflet 0:50cedd586816 689 *pbuf++= 0x02; // component identifier: Cr
dflet 0:50cedd586816 690 *pbuf++= 0x11; // horizontal | vertical sampling factor: Cr
dflet 0:50cedd586816 691 *pbuf++= 0x01; // quantization table selector: Cr
dflet 0:50cedd586816 692 }
dflet 0:50cedd586816 693
dflet 0:50cedd586816 694 return (length+2);
dflet 0:50cedd586816 695 }
dflet 0:50cedd586816 696
dflet 0:50cedd586816 697
dflet 0:50cedd586816 698 //*****************************************************************************
dflet 0:50cedd586816 699 //
dflet 0:50cedd586816 700 //! ScanHeaderMarker
dflet 0:50cedd586816 701 //!
dflet 0:50cedd586816 702 //! \param1 pointer to output buffer
dflet 0:50cedd586816 703 //! \param2 Format
dflet 0:50cedd586816 704 //!
dflet 0:50cedd586816 705 //! \return Length
dflet 0:50cedd586816 706 //
dflet 0:50cedd586816 707 //*****************************************************************************
dflet 0:50cedd586816 708 static int ScanHeaderMarker(char *pbuf, int format)
dflet 0:50cedd586816 709 {
dflet 0:50cedd586816 710 int length;
dflet 0:50cedd586816 711 if (format == FORMAT_MONOCHROME)
dflet 0:50cedd586816 712 length = 8;
dflet 0:50cedd586816 713 else
dflet 0:50cedd586816 714 length = 12;
dflet 0:50cedd586816 715
dflet 0:50cedd586816 716 *pbuf++= 0xFF; // start of scan
dflet 0:50cedd586816 717 *pbuf++= 0xDA;
dflet 0:50cedd586816 718 *pbuf++= length>>8; // length field
dflet 0:50cedd586816 719 *pbuf++= length&0xFF;
dflet 0:50cedd586816 720 if (format == FORMAT_MONOCHROME)// monochrome
dflet 0:50cedd586816 721 {
dflet 0:50cedd586816 722 *pbuf++= 0x01; // number of image components in scan
dflet 0:50cedd586816 723 *pbuf++= 0x00; // scan component selector: Y
dflet 0:50cedd586816 724 *pbuf++= 0x00; // DC | AC huffman table selector: Y
dflet 0:50cedd586816 725 }
dflet 0:50cedd586816 726 else // YCbCr
dflet 0:50cedd586816 727 {
dflet 0:50cedd586816 728 *pbuf++= 0x03; // number of image components in scan
dflet 0:50cedd586816 729 *pbuf++= 0x00; // scan component selector: Y
dflet 0:50cedd586816 730 *pbuf++= 0x00; // DC | AC huffman table selector: Y
dflet 0:50cedd586816 731 *pbuf++= 0x01; // scan component selector: Cb
dflet 0:50cedd586816 732 *pbuf++= 0x11; // DC | AC huffman table selector: Cb
dflet 0:50cedd586816 733 *pbuf++= 0x02; // scan component selector: Cr
dflet 0:50cedd586816 734 *pbuf++= 0x11; // DC | AC huffman table selector: Cr
dflet 0:50cedd586816 735 }
dflet 0:50cedd586816 736
dflet 0:50cedd586816 737 *pbuf++= 0x00; // Ss: start of predictor selector
dflet 0:50cedd586816 738 *pbuf++= 0x3F; // Se: end of spectral selector
dflet 0:50cedd586816 739 *pbuf++= 0x00; // Ah | Al: successive approximation bit position
dflet 0:50cedd586816 740
dflet 0:50cedd586816 741 return (length+2);
dflet 0:50cedd586816 742 }
dflet 0:50cedd586816 743
dflet 0:50cedd586816 744
dflet 0:50cedd586816 745 //*****************************************************************************
dflet 0:50cedd586816 746 //
dflet 0:50cedd586816 747 //! DefineQuantizationTableMarker
dflet 0:50cedd586816 748 //! Calculate and write the quantisation tables
dflet 0:50cedd586816 749 //! qscale is the customised scaling factor - see MT9D131 developer guide page 78
dflet 0:50cedd586816 750 //!
dflet 0:50cedd586816 751 //! \param1 pointer to the output buffer
dflet 0:50cedd586816 752 //! \param2 Quantization Scale
dflet 0:50cedd586816 753 //! \param3 Format
dflet 0:50cedd586816 754 //!
dflet 0:50cedd586816 755 //! \return Length of the Marker
dflet 0:50cedd586816 756 //
dflet 0:50cedd586816 757 //*****************************************************************************
dflet 0:50cedd586816 758 static int DefineQuantizationTableMarker (unsigned char *pbuf, int qscale, int format)
dflet 0:50cedd586816 759 {
dflet 0:50cedd586816 760 int i, length, temp;
dflet 0:50cedd586816 761 unsigned char newtbl[64]; // temporary array to store scaled zigzagged quant entries
dflet 0:50cedd586816 762
dflet 0:50cedd586816 763 if (format == FORMAT_MONOCHROME) // monochrome
dflet 0:50cedd586816 764 length = 67;
dflet 0:50cedd586816 765 else
dflet 0:50cedd586816 766 length = 132;
dflet 0:50cedd586816 767
dflet 0:50cedd586816 768 *pbuf++ = 0xFF; // define quantization table marker
dflet 0:50cedd586816 769 *pbuf++ = 0xDB;
dflet 0:50cedd586816 770 *pbuf++ = length>>8; // length field
dflet 0:50cedd586816 771 *pbuf++ = length&0xFF;
dflet 0:50cedd586816 772 *pbuf++ = 0; // quantization table precision | identifier for luminance
dflet 0:50cedd586816 773
dflet 0:50cedd586816 774 // calculate scaled zigzagged luminance quantisation table entries
dflet 0:50cedd586816 775 for (i=0; i<64; i++) {
dflet 0:50cedd586816 776 temp = (JPEG_StdQuantTblY[i] * qscale + 16) / 32;
dflet 0:50cedd586816 777 // limit the values to the valid range
dflet 0:50cedd586816 778 if (temp <= 0)
dflet 0:50cedd586816 779 temp = 1;
dflet 0:50cedd586816 780 if (temp > 255)
dflet 0:50cedd586816 781 temp = 255;
dflet 0:50cedd586816 782 newtbl[zigzag[i]] = (unsigned char) temp;
dflet 0:50cedd586816 783 }
dflet 0:50cedd586816 784
dflet 0:50cedd586816 785 // write the resulting luminance quant table to the output buffer
dflet 0:50cedd586816 786 for (i=0; i<64; i++)
dflet 0:50cedd586816 787 *pbuf++ = newtbl[i];
dflet 0:50cedd586816 788
dflet 0:50cedd586816 789 // if format is monochrome we're finished, otherwise continue on, to do chrominance quant table
dflet 0:50cedd586816 790 if (format == FORMAT_MONOCHROME)
dflet 0:50cedd586816 791 return (length+2);
dflet 0:50cedd586816 792
dflet 0:50cedd586816 793 *pbuf++ = 1; // quantization table precision | identifier for chrominance
dflet 0:50cedd586816 794
dflet 0:50cedd586816 795 // calculate scaled zigzagged chrominance quantisation table entries
dflet 0:50cedd586816 796 for (i=0; i<64; i++) {
dflet 0:50cedd586816 797 temp = (JPEG_StdQuantTblC[i] * qscale + 16) / 32;
dflet 0:50cedd586816 798 // limit the values to the valid range
dflet 0:50cedd586816 799 if (temp <= 0)
dflet 0:50cedd586816 800 temp = 1;
dflet 0:50cedd586816 801 if (temp > 255)
dflet 0:50cedd586816 802 temp = 255;
dflet 0:50cedd586816 803 newtbl[zigzag[i]] = (unsigned char) temp;
dflet 0:50cedd586816 804 }
dflet 0:50cedd586816 805
dflet 0:50cedd586816 806 // write the resulting chrominance quant table to the output buffer
dflet 0:50cedd586816 807 for (i=0; i<64; i++)
dflet 0:50cedd586816 808 *pbuf++ = newtbl[i];
dflet 0:50cedd586816 809
dflet 0:50cedd586816 810 return (length+2);
dflet 0:50cedd586816 811 }
dflet 0:50cedd586816 812
dflet 0:50cedd586816 813
dflet 0:50cedd586816 814 //*****************************************************************************
dflet 0:50cedd586816 815 //
dflet 0:50cedd586816 816 //! DefineHuffmanTableMarkerDC
dflet 0:50cedd586816 817 //!
dflet 0:50cedd586816 818 //! \param1 pointer to Marker buffer
dflet 0:50cedd586816 819 //! \param2 Huffman table
dflet 0:50cedd586816 820 //! \param3 Class Identifier
dflet 0:50cedd586816 821 //!
dflet 0:50cedd586816 822 //! \return Length of the marker
dflet 0:50cedd586816 823 //
dflet 0:50cedd586816 824 //*****************************************************************************
dflet 0:50cedd586816 825 static int DefineHuffmanTableMarkerDC(char *pbuf, unsigned int *htable, int class_id)
dflet 0:50cedd586816 826 {
dflet 0:50cedd586816 827 int i, l, count;
dflet 0:50cedd586816 828 int length;
dflet 0:50cedd586816 829 char *plength;
dflet 0:50cedd586816 830
dflet 0:50cedd586816 831 *pbuf++= 0xFF; // define huffman table marker
dflet 0:50cedd586816 832 *pbuf++= 0xC4;
dflet 0:50cedd586816 833 plength = pbuf; // place holder for length field
dflet 0:50cedd586816 834 *pbuf++;
dflet 0:50cedd586816 835 *pbuf++;
dflet 0:50cedd586816 836 *pbuf++= class_id; // huffman table class | identifier
dflet 0:50cedd586816 837
dflet 0:50cedd586816 838 for (l = 0; l < 16; l++)
dflet 0:50cedd586816 839 {
dflet 0:50cedd586816 840 count = 0;
dflet 0:50cedd586816 841 for (i = 0; i < 12; i++)
dflet 0:50cedd586816 842 {
dflet 0:50cedd586816 843 if ((htable[i] >> 8) == l)
dflet 0:50cedd586816 844 count++;
dflet 0:50cedd586816 845 }
dflet 0:50cedd586816 846 *pbuf++= count; // number of huffman codes of length l+1
dflet 0:50cedd586816 847 }
dflet 0:50cedd586816 848
dflet 0:50cedd586816 849 length = 19;
dflet 0:50cedd586816 850 for (l = 0; l < 16; l++)
dflet 0:50cedd586816 851 {
dflet 0:50cedd586816 852 for (i = 0; i < 12; i++)
dflet 0:50cedd586816 853 {
dflet 0:50cedd586816 854 if ((htable[i] >> 8) == l)
dflet 0:50cedd586816 855 {
dflet 0:50cedd586816 856 *pbuf++= i; // HUFFVAL with huffman codes of length l+1
dflet 0:50cedd586816 857 length++;
dflet 0:50cedd586816 858 }
dflet 0:50cedd586816 859 }
dflet 0:50cedd586816 860 }
dflet 0:50cedd586816 861
dflet 0:50cedd586816 862 *plength++= length>>8; // length field
dflet 0:50cedd586816 863 *plength = length&0xFF;
dflet 0:50cedd586816 864
dflet 0:50cedd586816 865 return (length + 2);
dflet 0:50cedd586816 866 }
dflet 0:50cedd586816 867
dflet 0:50cedd586816 868
dflet 0:50cedd586816 869 //*****************************************************************************
dflet 0:50cedd586816 870 //
dflet 0:50cedd586816 871 //! DefineHuffmanTableMarkerAC
dflet 0:50cedd586816 872 //! 1. Establishes connection w/ AP//
dflet 0:50cedd586816 873 //! 2. Initializes the camera sub-components//! GPIO Enable & Configuration
dflet 0:50cedd586816 874 //! 3. Listens and processes the image capture requests from user-applications
dflet 0:50cedd586816 875 //!
dflet 0:50cedd586816 876 //! \param1 pointer to Marker buffer
dflet 0:50cedd586816 877 //! \param2 Huffman table
dflet 0:50cedd586816 878 //! \param3 Class Identifier
dflet 0:50cedd586816 879 //!
dflet 0:50cedd586816 880 //! \return Length of the Marker
dflet 0:50cedd586816 881 //!
dflet 0:50cedd586816 882 //
dflet 0:50cedd586816 883 //*****************************************************************************
dflet 0:50cedd586816 884 static int DefineHuffmanTableMarkerAC(char *pbuf, unsigned int *htable, int class_id)
dflet 0:50cedd586816 885 {
dflet 0:50cedd586816 886 int i, l, a, b, count;
dflet 0:50cedd586816 887 char *plength;
dflet 0:50cedd586816 888 int length;
dflet 0:50cedd586816 889
dflet 0:50cedd586816 890 *pbuf++= 0xFF; // define huffman table marker
dflet 0:50cedd586816 891 *pbuf++= 0xC4;
dflet 0:50cedd586816 892 plength = pbuf; // place holder for length field
dflet 0:50cedd586816 893 *pbuf++;
dflet 0:50cedd586816 894 *pbuf++;
dflet 0:50cedd586816 895 *pbuf++= class_id; // huffman table class | identifier
dflet 0:50cedd586816 896
dflet 0:50cedd586816 897 for (l = 0; l < 16; l++)
dflet 0:50cedd586816 898 {
dflet 0:50cedd586816 899 count = 0;
dflet 0:50cedd586816 900 for (i = 0; i < 162; i++)
dflet 0:50cedd586816 901 {
dflet 0:50cedd586816 902 if ((htable[i] >> 8) == l)
dflet 0:50cedd586816 903 count++;
dflet 0:50cedd586816 904 }
dflet 0:50cedd586816 905
dflet 0:50cedd586816 906 *pbuf++= count; // number of huffman codes of length l+1
dflet 0:50cedd586816 907 }
dflet 0:50cedd586816 908
dflet 0:50cedd586816 909 length = 19;
dflet 0:50cedd586816 910 for (l = 0; l < 16; l++)
dflet 0:50cedd586816 911 {
dflet 0:50cedd586816 912 // check EOB: 0|0
dflet 0:50cedd586816 913 if ((htable[160] >> 8) == l)
dflet 0:50cedd586816 914 {
dflet 0:50cedd586816 915 *pbuf++= 0; // HUFFVAL with huffman codes of length l+1
dflet 0:50cedd586816 916 length++;
dflet 0:50cedd586816 917 }
dflet 0:50cedd586816 918
dflet 0:50cedd586816 919 // check HUFFVAL: 0|1 to E|A
dflet 0:50cedd586816 920 for (i = 0; i < 150; i++)
dflet 0:50cedd586816 921 {
dflet 0:50cedd586816 922 if ((htable[i] >> 8) == l)
dflet 0:50cedd586816 923 {
dflet 0:50cedd586816 924 a = i/10;
dflet 0:50cedd586816 925 b = i%10;
dflet 0:50cedd586816 926 *pbuf++= (a<<4)|(b+1); // HUFFVAL with huffman codes of length l+1
dflet 0:50cedd586816 927 length++;
dflet 0:50cedd586816 928 }
dflet 0:50cedd586816 929 }
dflet 0:50cedd586816 930
dflet 0:50cedd586816 931 // check ZRL: F|0
dflet 0:50cedd586816 932 if ((htable[161] >> 8) == l)
dflet 0:50cedd586816 933 {
dflet 0:50cedd586816 934 *pbuf++= 0xF0; // HUFFVAL with huffman codes of length l+1
dflet 0:50cedd586816 935 length++;
dflet 0:50cedd586816 936 }
dflet 0:50cedd586816 937
dflet 0:50cedd586816 938 // check HUFFVAL: F|1 to F|A
dflet 0:50cedd586816 939 for (i = 150; i < 160; i++)
dflet 0:50cedd586816 940 {
dflet 0:50cedd586816 941 if ((htable[i] >> 8) == l)
dflet 0:50cedd586816 942 {
dflet 0:50cedd586816 943 a = i/10;
dflet 0:50cedd586816 944 b = i%10;
dflet 0:50cedd586816 945 *pbuf++= (a<<4)|(b+1); // HUFFVAL with huffman codes of length l+1
dflet 0:50cedd586816 946 length++;
dflet 0:50cedd586816 947 }
dflet 0:50cedd586816 948 }
dflet 0:50cedd586816 949 }
dflet 0:50cedd586816 950
dflet 0:50cedd586816 951 *plength++= length>>8; // length field
dflet 0:50cedd586816 952 *plength = length&0xFF;
dflet 0:50cedd586816 953 return (length + 2);
dflet 0:50cedd586816 954 }
dflet 0:50cedd586816 955
dflet 0:50cedd586816 956
dflet 0:50cedd586816 957 //*****************************************************************************
dflet 0:50cedd586816 958 //
dflet 0:50cedd586816 959 //! DefineRestartIntervalMarker
dflet 0:50cedd586816 960 //!
dflet 0:50cedd586816 961 //! \param1 pointer to Marker buffer
dflet 0:50cedd586816 962 //! \param2 return interval
dflet 0:50cedd586816 963 //!
dflet 0:50cedd586816 964 //! \return Length
dflet 0:50cedd586816 965 //
dflet 0:50cedd586816 966 //*****************************************************************************
dflet 0:50cedd586816 967 static int DefineRestartIntervalMarker(char *pbuf, int ri)
dflet 0:50cedd586816 968 {
dflet 0:50cedd586816 969 *pbuf++= 0xFF; // define restart interval marker
dflet 0:50cedd586816 970 *pbuf++= 0xDD;
dflet 0:50cedd586816 971 *pbuf++= 0x00; // length
dflet 0:50cedd586816 972 *pbuf++= 0x04;
dflet 0:50cedd586816 973 *pbuf++= ri >> 8; // restart interval
dflet 0:50cedd586816 974 *pbuf++= ri & 0xFF;
dflet 0:50cedd586816 975 return 6;
dflet 0:50cedd586816 976 }
dflet 0:50cedd586816 977 //*****************************************************************************
dflet 0:50cedd586816 978 //
dflet 0:50cedd586816 979 //! CreateJpegHeader
dflet 0:50cedd586816 980 //! Create JPEG Header in JFIF format
dflet 0:50cedd586816 981 //!
dflet 0:50cedd586816 982 //! \param1 header - pointer to JPEG header buffer
dflet 0:50cedd586816 983 //! \param2 width - image width
dflet 0:50cedd586816 984 //! \param3 height - image height
dflet 0:50cedd586816 985 //! \param4 format - color format (0 = YCbCr422, 1 = YCbCr420, 2 = monochrome)
dflet 0:50cedd586816 986 //! \param5 restart_int - restart marker interval
dflet 0:50cedd586816 987 //! \param6 qscale - quantization table scaling factor
dflet 0:50cedd586816 988 //!
dflet 0:50cedd586816 989 //! \return length of JPEG header (bytes)
dflet 0:50cedd586816 990 //
dflet 0:50cedd586816 991 //*****************************************************************************
dflet 0:50cedd586816 992
dflet 0:50cedd586816 993 static int CreateJpegHeader(char *header, int width, int height,
dflet 0:50cedd586816 994 int format, int restart_int, int qscale)
dflet 0:50cedd586816 995 {
dflet 0:50cedd586816 996 Uart_Write((uint8_t*)"CreateJpegHeader \n\r");
dflet 0:50cedd586816 997 char *pbuf = header;
dflet 0:50cedd586816 998 int length;
dflet 0:50cedd586816 999
dflet 0:50cedd586816 1000 // SOI
dflet 0:50cedd586816 1001 *pbuf++= 0xFF;
dflet 0:50cedd586816 1002 *pbuf++= 0xD8;
dflet 0:50cedd586816 1003 length = 2;
dflet 0:50cedd586816 1004
dflet 0:50cedd586816 1005 // JFIF APP0
dflet 0:50cedd586816 1006 length += JfifApp0Marker(pbuf);
dflet 0:50cedd586816 1007
dflet 0:50cedd586816 1008 // Quantization Tables
dflet 0:50cedd586816 1009 pbuf = header + length;
dflet 0:50cedd586816 1010 length += DefineQuantizationTableMarker((unsigned char *)pbuf, qscale, format);
dflet 0:50cedd586816 1011
dflet 0:50cedd586816 1012 // Frame Header
dflet 0:50cedd586816 1013 pbuf = header + length;
dflet 0:50cedd586816 1014 length += FrameHeaderMarker(pbuf, width, height, format);
dflet 0:50cedd586816 1015
dflet 0:50cedd586816 1016 // Huffman Table DC 0 for Luma
dflet 0:50cedd586816 1017 pbuf = header + length;
dflet 0:50cedd586816 1018 length += DefineHuffmanTableMarkerDC(pbuf, &JPEG_StdHuffmanTbl[352], 0x00);
dflet 0:50cedd586816 1019
dflet 0:50cedd586816 1020 // Huffman Table AC 0 for Luma
dflet 0:50cedd586816 1021 pbuf = header + length;
dflet 0:50cedd586816 1022 length += DefineHuffmanTableMarkerAC(pbuf, &JPEG_StdHuffmanTbl[0], 0x10);
dflet 0:50cedd586816 1023
dflet 0:50cedd586816 1024 if (format != FORMAT_MONOCHROME)// YCbCr
dflet 0:50cedd586816 1025 {
dflet 0:50cedd586816 1026 // Huffman Table DC 1 for Chroma
dflet 0:50cedd586816 1027 pbuf = header + length;
dflet 0:50cedd586816 1028 length += DefineHuffmanTableMarkerDC(pbuf, &JPEG_StdHuffmanTbl[368], 0x01);
dflet 0:50cedd586816 1029
dflet 0:50cedd586816 1030 // Huffman Table AC 1 for Chroma
dflet 0:50cedd586816 1031 pbuf = header + length;
dflet 0:50cedd586816 1032 length += DefineHuffmanTableMarkerAC(pbuf, &JPEG_StdHuffmanTbl[176], 0x11);
dflet 0:50cedd586816 1033 }
dflet 0:50cedd586816 1034
dflet 0:50cedd586816 1035 // Restart Interval
dflet 0:50cedd586816 1036 if (restart_int > 0)
dflet 0:50cedd586816 1037 {
dflet 0:50cedd586816 1038 pbuf = header + length;
dflet 0:50cedd586816 1039 length += DefineRestartIntervalMarker(pbuf, restart_int);
dflet 0:50cedd586816 1040 }
dflet 0:50cedd586816 1041
dflet 0:50cedd586816 1042 // Scan Header
dflet 0:50cedd586816 1043 pbuf = header + length;
dflet 0:50cedd586816 1044 length += ScanHeaderMarker(pbuf, format);
dflet 0:50cedd586816 1045
dflet 0:50cedd586816 1046 return length;
dflet 0:50cedd586816 1047 }
dflet 0:50cedd586816 1048 #endif
dflet 0:50cedd586816 1049
dflet 0:50cedd586816 1050
dflet 0:50cedd586816 1051
dflet 0:50cedd586816 1052 //*****************************************************************************
dflet 0:50cedd586816 1053 //
dflet 0:50cedd586816 1054 // Close the Doxygen group.
dflet 0:50cedd586816 1055 //! @}
dflet 0:50cedd586816 1056 //
dflet 0:50cedd586816 1057 //*****************************************************************************
dflet 0:50cedd586816 1058