Embedded Artists / DMBasicGUI

A basic graphics package for the LPC4088 Display Module.

Dependents:   lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI lpc4088_displaymodule_fs_aid ... more

Fork of DMBasicGUI by EmbeddedArtists AB

Application/Image.cpp@5:f4de114c31c3, 2014-12-21 (annotated)

Committer:
embeddedartists
Date:
Sun Dec 21 13:53:07 2014 +0100
Revision:
5:f4de114c31c3
Parent:
1:46c8df4608c8
Child:
6:7917b0894655
- Added support for RAW images

- Added SlideShow + App for it

- Moved App-specific stuff out from the AppLauncher and into main

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 1:46c8df4608c8 1 /*
embeddedartists 1:46c8df4608c8 2 * Copyright 2014 Embedded Artists AB
embeddedartists 1:46c8df4608c8 3 *
embeddedartists 1:46c8df4608c8 4 * Licensed under the Apache License, Version 2.0 (the "License");
embeddedartists 1:46c8df4608c8 5 * you may not use this file except in compliance with the License.
embeddedartists 1:46c8df4608c8 6 * You may obtain a copy of the License at
embeddedartists 1:46c8df4608c8 7 *
embeddedartists 1:46c8df4608c8 8 * http://www.apache.org/licenses/LICENSE-2.0
embeddedartists 1:46c8df4608c8 9 *
embeddedartists 1:46c8df4608c8 10 * Unless required by applicable law or agreed to in writing, software
embeddedartists 1:46c8df4608c8 11 * distributed under the License is distributed on an "AS IS" BASIS,
embeddedartists 1:46c8df4608c8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
embeddedartists 1:46c8df4608c8 13 * See the License for the specific language governing permissions and
embeddedartists 1:46c8df4608c8 14 * limitations under the License.
embeddedartists 1:46c8df4608c8 15 */
embeddedartists 0:4977187e90c7 16
embeddedartists 0:4977187e90c7 17 #include "mbed.h"
embeddedartists 0:4977187e90c7 18 #include "Image.h"
embeddedartists 0:4977187e90c7 19
embeddedartists 0:4977187e90c7 20 #include "bmp.h"
embeddedartists 0:4977187e90c7 21 #include "lodepng.h"
embeddedartists 0:4977187e90c7 22
embeddedartists 5:f4de114c31c3 23 struct eaimg_header_t
embeddedartists 5:f4de114c31c3 24 {
embeddedartists 5:f4de114c31c3 25 char prefix[6];
embeddedartists 5:f4de114c31c3 26 uint16_t width;
embeddedartists 5:f4de114c31c3 27 uint16_t height;
embeddedartists 5:f4de114c31c3 28 } __attribute__ ((packed));
embeddedartists 5:f4de114c31c3 29
embeddedartists 0:4977187e90c7 30 int Image::decode(const unsigned char* pDataIn, unsigned int sizeIn, Resolution resolution, ImageData_t* pDataOut)
embeddedartists 0:4977187e90c7 31 {
embeddedartists 0:4977187e90c7 32 Image::Type type = imageType(pDataIn, sizeIn);
embeddedartists 0:4977187e90c7 33 int result = -1;
embeddedartists 0:4977187e90c7 34 switch (type)
embeddedartists 0:4977187e90c7 35 {
embeddedartists 0:4977187e90c7 36 case BMP:
embeddedartists 0:4977187e90c7 37 {
embeddedartists 0:4977187e90c7 38 struct BMPHeader* hdr = (struct BMPHeader *) pDataIn;
embeddedartists 0:4977187e90c7 39 if (resolution == RES_16BIT) {
embeddedartists 0:4977187e90c7 40 pDataOut->pixels = (uint16_t*)malloc(hdr->width * hdr->height * 2);
embeddedartists 0:4977187e90c7 41 } else if (resolution == RES_24BIT) {
embeddedartists 0:4977187e90c7 42 pDataOut->pixels = (uint16_t*)malloc(hdr->width * hdr->height * 4);
embeddedartists 0:4977187e90c7 43 } else {
embeddedartists 0:4977187e90c7 44 return -1;
embeddedartists 0:4977187e90c7 45 }
embeddedartists 5:f4de114c31c3 46 pDataOut->pointerToFree = pDataOut->pixels;
embeddedartists 0:4977187e90c7 47 if (pDataOut->pixels != NULL)
embeddedartists 0:4977187e90c7 48 {
embeddedartists 0:4977187e90c7 49 unsigned char error = BMP_Decode((void*)pDataIn, (unsigned char*)pDataOut->pixels,
embeddedartists 0:4977187e90c7 50 hdr->width, hdr->height, 24, ((resolution == RES_16BIT) ? 16 : 24));
embeddedartists 0:4977187e90c7 51 if (error == 0)
embeddedartists 0:4977187e90c7 52 {
embeddedartists 0:4977187e90c7 53 pDataOut->width = hdr->width;
embeddedartists 0:4977187e90c7 54 pDataOut->height = hdr->height;
embeddedartists 0:4977187e90c7 55 pDataOut->res = resolution;
embeddedartists 0:4977187e90c7 56 return 0;
embeddedartists 0:4977187e90c7 57 }
embeddedartists 0:4977187e90c7 58 free(pDataOut->pixels);
embeddedartists 5:f4de114c31c3 59 pDataOut->pointerToFree = NULL;
embeddedartists 0:4977187e90c7 60 }
embeddedartists 0:4977187e90c7 61 }
embeddedartists 0:4977187e90c7 62 break;
embeddedartists 0:4977187e90c7 63
embeddedartists 0:4977187e90c7 64 case PNG:
embeddedartists 0:4977187e90c7 65 {
embeddedartists 0:4977187e90c7 66 unsigned char* pTmp;
embeddedartists 0:4977187e90c7 67 unsigned error = lodepng_decode24(&pTmp, &pDataOut->width, &pDataOut->height, pDataIn, sizeIn);
embeddedartists 0:4977187e90c7 68 pDataOut->res = resolution;
embeddedartists 0:4977187e90c7 69 if (error == 0)
embeddedartists 0:4977187e90c7 70 {
embeddedartists 0:4977187e90c7 71 int x, y;
embeddedartists 0:4977187e90c7 72 uint8_t r;
embeddedartists 0:4977187e90c7 73 uint8_t g;
embeddedartists 0:4977187e90c7 74 uint8_t b;
embeddedartists 0:4977187e90c7 75 int off = 0;
embeddedartists 0:4977187e90c7 76
embeddedartists 0:4977187e90c7 77 result = 0;
embeddedartists 0:4977187e90c7 78 if (resolution == RES_16BIT) {
embeddedartists 0:4977187e90c7 79 pDataOut->pixels = (uint16_t*)malloc(pDataOut->width * pDataOut->height * 2);
embeddedartists 5:f4de114c31c3 80 pDataOut->pointerToFree = pDataOut->pixels;
embeddedartists 0:4977187e90c7 81 if (pDataOut->pixels != NULL)
embeddedartists 0:4977187e90c7 82 {
embeddedartists 0:4977187e90c7 83 uint16_t* pConverted = pDataOut->pixels;
embeddedartists 0:4977187e90c7 84
embeddedartists 0:4977187e90c7 85 for (y = 0; y < pDataOut->height; y++) {
embeddedartists 0:4977187e90c7 86 for (x = 0; x < pDataOut->width; x++) {
embeddedartists 0:4977187e90c7 87 r = pTmp[off ];
embeddedartists 0:4977187e90c7 88 g = pTmp[off + 1];
embeddedartists 0:4977187e90c7 89 b = pTmp[off + 2];
embeddedartists 0:4977187e90c7 90 *pConverted = (((unsigned short)r & 0xF8) << 8) |
embeddedartists 0:4977187e90c7 91 (((unsigned short)g & 0xFC) << 3) |
embeddedartists 0:4977187e90c7 92 (((unsigned short)b & 0xF8) >> 3);
embeddedartists 0:4977187e90c7 93 pConverted++;
embeddedartists 0:4977187e90c7 94 off += 3;
embeddedartists 0:4977187e90c7 95 }
embeddedartists 0:4977187e90c7 96 }
embeddedartists 0:4977187e90c7 97 }
embeddedartists 0:4977187e90c7 98 } else if (resolution == RES_24BIT) {
embeddedartists 0:4977187e90c7 99 uint32_t* pConverted = (uint32_t*)malloc(pDataOut->width * pDataOut->height * 4);
embeddedartists 0:4977187e90c7 100 pDataOut->pixels = (uint16_t*)pConverted;
embeddedartists 5:f4de114c31c3 101 pDataOut->pointerToFree = pDataOut->pixels;
embeddedartists 0:4977187e90c7 102 if (pDataOut->pixels != NULL)
embeddedartists 0:4977187e90c7 103 {
embeddedartists 0:4977187e90c7 104 uint8_t* p = pTmp;
embeddedartists 0:4977187e90c7 105 int num = pDataOut->width * pDataOut->height;
embeddedartists 0:4977187e90c7 106 for (int i = 0; i < num; i++) {
embeddedartists 0:4977187e90c7 107 uint32_t a = 0;
embeddedartists 0:4977187e90c7 108 a |= (*p++) << 16; // red
embeddedartists 0:4977187e90c7 109 a |= (*p++) << 8; // green
embeddedartists 0:4977187e90c7 110 a |= (*p++) << 0; // blue
embeddedartists 0:4977187e90c7 111 *pConverted++ = a;
embeddedartists 0:4977187e90c7 112 }
embeddedartists 0:4977187e90c7 113 }
embeddedartists 0:4977187e90c7 114 } else {
embeddedartists 0:4977187e90c7 115 // unknown format
embeddedartists 0:4977187e90c7 116 result = -2;
embeddedartists 0:4977187e90c7 117 }
embeddedartists 0:4977187e90c7 118 free(pTmp);
embeddedartists 0:4977187e90c7 119 return result;
embeddedartists 0:4977187e90c7 120 }
embeddedartists 0:4977187e90c7 121 }
embeddedartists 0:4977187e90c7 122 break;
embeddedartists 0:4977187e90c7 123
embeddedartists 5:f4de114c31c3 124 case RAW:
embeddedartists 5:f4de114c31c3 125 {
embeddedartists 5:f4de114c31c3 126 eaimg_header_t* hdr = (eaimg_header_t*)pDataIn;
embeddedartists 5:f4de114c31c3 127 pDataOut->width = hdr->width;
embeddedartists 5:f4de114c31c3 128 pDataOut->height = hdr->height;
embeddedartists 5:f4de114c31c3 129 pDataOut->pointerToFree = malloc(sizeIn-sizeof(eaimg_header_t));
embeddedartists 5:f4de114c31c3 130 pDataOut->pixels = (uint16_t*)pDataOut->pointerToFree;
embeddedartists 5:f4de114c31c3 131 pDataOut->res = RES_16BIT;
embeddedartists 5:f4de114c31c3 132 if (pDataOut->pixels != NULL)
embeddedartists 5:f4de114c31c3 133 {
embeddedartists 5:f4de114c31c3 134 memcpy(pDataOut->pixels, pDataIn+sizeof(eaimg_header_t), sizeIn-sizeof(eaimg_header_t));
embeddedartists 5:f4de114c31c3 135 return 0;
embeddedartists 5:f4de114c31c3 136 }
embeddedartists 5:f4de114c31c3 137 }
embeddedartists 5:f4de114c31c3 138 break;
embeddedartists 5:f4de114c31c3 139
embeddedartists 0:4977187e90c7 140 default:
embeddedartists 0:4977187e90c7 141 break;
embeddedartists 0:4977187e90c7 142 }
embeddedartists 0:4977187e90c7 143
embeddedartists 0:4977187e90c7 144 pDataOut->pixels = NULL;
embeddedartists 5:f4de114c31c3 145 pDataOut->pointerToFree = NULL;
embeddedartists 0:4977187e90c7 146 pDataOut->width = 0;
embeddedartists 0:4977187e90c7 147 pDataOut->height = 0;
embeddedartists 5:f4de114c31c3 148 pDataOut->res = resolution;
embeddedartists 0:4977187e90c7 149 return result;
embeddedartists 0:4977187e90c7 150 }
embeddedartists 0:4977187e90c7 151
embeddedartists 5:f4de114c31c3 152 int Image::decode(const char* filename, Resolution res, ImageData_t* pDataOut, Mutex* pLock)
embeddedartists 0:4977187e90c7 153 {
embeddedartists 0:4977187e90c7 154 FILE* fh = NULL;
embeddedartists 0:4977187e90c7 155 uint8_t* buff = NULL;
embeddedartists 0:4977187e90c7 156 int result = 1;
embeddedartists 0:4977187e90c7 157
embeddedartists 5:f4de114c31c3 158 pDataOut->height = 0;
embeddedartists 5:f4de114c31c3 159 pDataOut->width = 0;
embeddedartists 5:f4de114c31c3 160 pDataOut->pixels = NULL;
embeddedartists 5:f4de114c31c3 161 pDataOut->pointerToFree = NULL;
embeddedartists 5:f4de114c31c3 162 pDataOut->res = res;
embeddedartists 5:f4de114c31c3 163
embeddedartists 5:f4de114c31c3 164 if (pLock != NULL) {
embeddedartists 5:f4de114c31c3 165 pLock->lock();
embeddedartists 5:f4de114c31c3 166 }
embeddedartists 5:f4de114c31c3 167
embeddedartists 0:4977187e90c7 168 do
embeddedartists 0:4977187e90c7 169 {
embeddedartists 0:4977187e90c7 170 fh = fopen(filename, "r");
embeddedartists 0:4977187e90c7 171 if (fh == NULL) {
embeddedartists 0:4977187e90c7 172 break;
embeddedartists 0:4977187e90c7 173 }
embeddedartists 0:4977187e90c7 174
embeddedartists 0:4977187e90c7 175 uint32_t size = fileSize(fh);
embeddedartists 0:4977187e90c7 176 buff = (uint8_t*)malloc(size);
embeddedartists 0:4977187e90c7 177 if (buff == NULL) {
embeddedartists 0:4977187e90c7 178 return 1;
embeddedartists 0:4977187e90c7 179 }
embeddedartists 0:4977187e90c7 180
embeddedartists 0:4977187e90c7 181 uint32_t num;
embeddedartists 0:4977187e90c7 182 uint32_t left = size;
embeddedartists 0:4977187e90c7 183 uint32_t off = 0;
embeddedartists 0:4977187e90c7 184 do
embeddedartists 0:4977187e90c7 185 {
embeddedartists 0:4977187e90c7 186 num = fread(buff+off, 1, left, fh);
embeddedartists 0:4977187e90c7 187 if (num > 0) {
embeddedartists 0:4977187e90c7 188 left -= num;
embeddedartists 0:4977187e90c7 189 off += num;
embeddedartists 0:4977187e90c7 190 }
embeddedartists 0:4977187e90c7 191 } while (left > 0 && num > 0);
embeddedartists 0:4977187e90c7 192 if (left > 0) {
embeddedartists 0:4977187e90c7 193 break;
embeddedartists 0:4977187e90c7 194 }
embeddedartists 0:4977187e90c7 195
embeddedartists 5:f4de114c31c3 196 fclose(fh);
embeddedartists 5:f4de114c31c3 197 if (pLock != NULL) {
embeddedartists 5:f4de114c31c3 198 pLock->unlock();
embeddedartists 5:f4de114c31c3 199 }
embeddedartists 5:f4de114c31c3 200
embeddedartists 5:f4de114c31c3 201 Type type = imageType(buff, size);
embeddedartists 5:f4de114c31c3 202 if (type == RAW) {
embeddedartists 5:f4de114c31c3 203 pDataOut->width = ((eaimg_header_t*)buff)->width;
embeddedartists 5:f4de114c31c3 204 pDataOut->height = ((eaimg_header_t*)buff)->height;
embeddedartists 5:f4de114c31c3 205 pDataOut->pointerToFree = buff;
embeddedartists 5:f4de114c31c3 206 pDataOut->res = RES_16BIT;
embeddedartists 5:f4de114c31c3 207 pDataOut->pixels = (uint16_t*)(buff + sizeof(eaimg_header_t));
embeddedartists 5:f4de114c31c3 208 } else {
embeddedartists 5:f4de114c31c3 209 result = Image::decode(buff, size, res, pDataOut);
embeddedartists 5:f4de114c31c3 210 free(buff);
embeddedartists 0:4977187e90c7 211 }
embeddedartists 0:4977187e90c7 212
embeddedartists 0:4977187e90c7 213 // success
embeddedartists 5:f4de114c31c3 214 return 0;
embeddedartists 0:4977187e90c7 215
embeddedartists 0:4977187e90c7 216 } while (false);
embeddedartists 0:4977187e90c7 217
embeddedartists 0:4977187e90c7 218 if (fh != NULL) {
embeddedartists 0:4977187e90c7 219 fclose(fh);
embeddedartists 0:4977187e90c7 220 }
embeddedartists 0:4977187e90c7 221 if (buff != NULL) {
embeddedartists 0:4977187e90c7 222 free(buff);
embeddedartists 0:4977187e90c7 223 }
embeddedartists 5:f4de114c31c3 224 if (pLock != NULL) {
embeddedartists 5:f4de114c31c3 225 pLock->unlock();
embeddedartists 5:f4de114c31c3 226 }
embeddedartists 0:4977187e90c7 227 return result;
embeddedartists 0:4977187e90c7 228 }
embeddedartists 0:4977187e90c7 229
embeddedartists 0:4977187e90c7 230 Image::Type Image::imageType(const unsigned char* pDataIn, unsigned int sizeIn)
embeddedartists 0:4977187e90c7 231 {
embeddedartists 0:4977187e90c7 232 if (sizeIn > 4)
embeddedartists 0:4977187e90c7 233 {
embeddedartists 0:4977187e90c7 234 if (pDataIn[0] == 0x89 && pDataIn[1] == 'P' && pDataIn[2] == 'N' && pDataIn[3] == 'G')
embeddedartists 0:4977187e90c7 235 {
embeddedartists 0:4977187e90c7 236 return PNG;
embeddedartists 0:4977187e90c7 237 }
embeddedartists 0:4977187e90c7 238 }
embeddedartists 0:4977187e90c7 239 if (BMP_IsValid((void*)pDataIn))
embeddedartists 0:4977187e90c7 240 {
embeddedartists 0:4977187e90c7 241 return BMP;
embeddedartists 0:4977187e90c7 242 }
embeddedartists 5:f4de114c31c3 243 if (sizeIn >= sizeof(eaimg_header_t))
embeddedartists 5:f4de114c31c3 244 {
embeddedartists 5:f4de114c31c3 245 eaimg_header_t* hdr = (eaimg_header_t*)pDataIn;
embeddedartists 5:f4de114c31c3 246 if (memcmp(hdr->prefix, "eaimg:", 6) == 0)
embeddedartists 5:f4de114c31c3 247 {
embeddedartists 5:f4de114c31c3 248 return RAW;
embeddedartists 5:f4de114c31c3 249 }
embeddedartists 5:f4de114c31c3 250 }
embeddedartists 0:4977187e90c7 251 return UNKNOWN;
embeddedartists 0:4977187e90c7 252 }
embeddedartists 0:4977187e90c7 253
embeddedartists 0:4977187e90c7 254 uint32_t Image::fileSize(FILE* f)
embeddedartists 0:4977187e90c7 255 {
embeddedartists 0:4977187e90c7 256 uint32_t pos = ftell(f);
embeddedartists 0:4977187e90c7 257 fseek(f, 0, SEEK_END);
embeddedartists 0:4977187e90c7 258 uint32_t size = ftell(f);
embeddedartists 0:4977187e90c7 259 fseek(f, pos, SEEK_SET);
embeddedartists 0:4977187e90c7 260 return size;
embeddedartists 0:4977187e90c7 261 }