249 lines
8.9 KiB
C++
249 lines
8.9 KiB
C++
/*
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* Authors (alphabetical order)
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* - Andre Bernet <bernet.andre@gmail.com>
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* - Andreas Weitl
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* - Bertrand Songis <bsongis@gmail.com>
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* - Bryan J. Rentoul (Gruvin) <gruvin@gmail.com>
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* - Cameron Weeks <th9xer@gmail.com>
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* - Erez Raviv
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* - Gabriel Birkus
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* - Jean-Pierre Parisy
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* - Karl Szmutny
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* - Michael Blandford
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* - Michal Hlavinka
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* - Pat Mackenzie
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* - Philip Moss
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* - Rob Thomson
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* - Romolo Manfredini <romolo.manfredini@gmail.com>
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* - Thomas Husterer
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*
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* opentx is based on code named
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* gruvin9x by Bryan J. Rentoul: http://code.google.com/p/gruvin9x/,
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* er9x by Erez Raviv: http://code.google.com/p/er9x/,
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* and the original (and ongoing) project by
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* Thomas Husterer, th9x: http://code.google.com/p/th9x/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include "opentx.h"
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const pm_char * bmpLoad(bmp_ptr_t &bmp, const char *filename, const xcoord_t width, const uint8_t height)
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{
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FIL bmpFile;
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UINT read;
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uint8_t palette[16];
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uint8_t bmpBuf[LCD_W]; /* maximum with LCD_W */
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uint8_t *buf = &bmpBuf[0];
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assert(width <= LCD_W);
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FRESULT result = f_open(&bmpFile, filename, FA_OPEN_EXISTING | FA_READ);
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if (result != FR_OK) {
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return SDCARD_ERROR(result);
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}
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if (f_size(&bmpFile) < 14) {
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f_close(&bmpFile);
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return STR_INCOMPATIBLE;
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}
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result = f_read(&bmpFile, buf, 14, &read);
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if (result != FR_OK || read != 14) {
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f_close(&bmpFile);
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return SDCARD_ERROR(result);
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}
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if (buf[0] != 'B' || buf[1] != 'M') {
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f_close(&bmpFile);
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return STR_INCOMPATIBLE;
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}
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uint32_t fsize = *((uint32_t *)&buf[2]);
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uint32_t hsize = *((uint32_t *)&buf[10]); /* header size */
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uint32_t len = limit((uint32_t)0, (uint32_t)(hsize-14), (uint32_t)32);
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result = f_read(&bmpFile, buf, len, &read);
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if (result != FR_OK || read != len) {
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f_close(&bmpFile);
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return SDCARD_ERROR(result);
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}
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uint32_t ihsize = *((uint32_t *)&buf[0]); /* more header size */
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/* invalid header size */
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if (ihsize + 14 > hsize) {
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f_close(&bmpFile);
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return STR_INCOMPATIBLE;
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}
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/* sometimes file size is set to some headers size, set a real size in that case */
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if (fsize == 14 || fsize == ihsize + 14)
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fsize = f_size(&bmpFile) - 2;
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/* declared file size less than header size */
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if (fsize <= hsize) {
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f_close(&bmpFile);
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return STR_INCOMPATIBLE;
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}
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uint32_t w, h;
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switch (ihsize){
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case 40: // windib
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case 56: // windib v3
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case 64: // OS/2 v2
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case 108: // windib v4
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case 124: // windib v5
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w = *((uint32_t *)&buf[4]);
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h = *((uint32_t *)&buf[8]);
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buf += 12;
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break;
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case 12: // OS/2 v1
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w = *((uint16_t *)&buf[4]);
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h = *((uint16_t *)&buf[6]);
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buf += 8;
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break;
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default:
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f_close(&bmpFile);
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return STR_INCOMPATIBLE;
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}
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if (*((uint16_t *)&buf[0]) != 1) { /* planes */
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f_close(&bmpFile);
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return STR_INCOMPATIBLE;
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}
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if (w > width || h > height) {
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f_close(&bmpFile);
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return STR_INCOMPATIBLE;
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}
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uint16_t depth = *((uint16_t *)&buf[2]);
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buf = &bmpBuf[0];
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if (depth == 4) {
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if (f_lseek(&bmpFile, hsize-64) != FR_OK || f_read(&bmpFile, buf, 64, &read) != FR_OK || read != 64) {
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f_close(&bmpFile);
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return SDCARD_ERROR(result);
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}
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for (uint8_t i=0; i<16; i++) {
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palette[i] = buf[4*i] >> 4;
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}
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}
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else {
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if (f_lseek(&bmpFile, hsize) != FR_OK) {
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f_close(&bmpFile);
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return SDCARD_ERROR(result);
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}
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}
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if (bmp == NULL) {
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bmp = (uint8_t *)malloc(2+w*((h+7)/8)*4);
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}
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uint8_t *dest = bmp;
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*dest++ = w;
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*dest++ = h;
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memset(dest, 0, w*((h+7)/8)*4);
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uint32_t n;
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switch (depth) {
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case 1:
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n = w/8;
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for (uint32_t i=0; i<h; i+=8) {
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result = f_read(&bmpFile, buf, n*8, &read);
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if (result != FR_OK || read != n*8) {
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f_close(&bmpFile);
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return SDCARD_ERROR(result);
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}
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uint8_t * dst = dest + 4*((h-i-8)/8 * w);
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for (uint32_t j=0; j<n; j++) {
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#define PUSH_4BYTES(x) *dst = *(dst+1) = *(dst+2) = *(dst+3) = (x); dst += 4
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PUSH_4BYTES(~(((buf[j+0*n] >> 7) << 7) + ((buf[j+1*n] >> 7) << 6) + ((buf[j+2*n] >> 7) << 5) + ((buf[j+3*n] >> 7) << 4) + ((buf[j+4*n] >> 7) << 3) + ((buf[j+5*n] >> 7) << 2) + ((buf[j+6*n] >> 7) << 1) + ((buf[j+7*n] >> 7) << 0)));
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PUSH_4BYTES(~((((buf[j+0*n] >> 6) & 1) << 7) + (((buf[j+1*n] >> 6) & 1) << 6) + (((buf[j+2*n] >> 6) & 1) << 5) + (((buf[j+3*n] >> 6) & 1) << 4) + (((buf[j+4*n] >> 6) & 1) << 3) + (((buf[j+5*n] >> 6) & 1) << 2) + (((buf[j+6*n] >> 6) & 1) << 1) + (((buf[j+7*n] >> 6) & 1) << 0)));
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PUSH_4BYTES(~((((buf[j+0*n] >> 5) & 1) << 7) + (((buf[j+1*n] >> 5) & 1) << 6) + (((buf[j+2*n] >> 5) & 1) << 5) + (((buf[j+3*n] >> 5) & 1) << 4) + (((buf[j+4*n] >> 5) & 1) << 3) + (((buf[j+5*n] >> 5) & 1) << 2) + (((buf[j+6*n] >> 5) & 1) << 1) + (((buf[j+7*n] >> 5) & 1) << 0)));
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PUSH_4BYTES(~((((buf[j+0*n] >> 4) & 1) << 7) + (((buf[j+1*n] >> 4) & 1) << 6) + (((buf[j+2*n] >> 4) & 1) << 5) + (((buf[j+3*n] >> 4) & 1) << 4) + (((buf[j+4*n] >> 4) & 1) << 3) + (((buf[j+5*n] >> 4) & 1) << 2) + (((buf[j+6*n] >> 4) & 1) << 1) + (((buf[j+7*n] >> 4) & 1) << 0)));
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PUSH_4BYTES(~((((buf[j+0*n] >> 3) & 1) << 7) + (((buf[j+1*n] >> 3) & 1) << 6) + (((buf[j+2*n] >> 3) & 1) << 5) + (((buf[j+3*n] >> 3) & 1) << 4) + (((buf[j+4*n] >> 3) & 1) << 3) + (((buf[j+5*n] >> 3) & 1) << 2) + (((buf[j+6*n] >> 3) & 1) << 1) + (((buf[j+7*n] >> 3) & 1) << 0)));
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PUSH_4BYTES(~((((buf[j+0*n] >> 2) & 1) << 7) + (((buf[j+1*n] >> 2) & 1) << 6) + (((buf[j+2*n] >> 2) & 1) << 5) + (((buf[j+3*n] >> 2) & 1) << 4) + (((buf[j+4*n] >> 2) & 1) << 3) + (((buf[j+5*n] >> 2) & 1) << 2) + (((buf[j+6*n] >> 2) & 1) << 1) + (((buf[j+7*n] >> 2) & 1) << 0)));
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PUSH_4BYTES(~((((buf[j+0*n] >> 1) & 1) << 7) + (((buf[j+1*n] >> 1) & 1) << 6) + (((buf[j+2*n] >> 1) & 1) << 5) + (((buf[j+3*n] >> 1) & 1) << 4) + (((buf[j+4*n] >> 1) & 1) << 3) + (((buf[j+5*n] >> 1) & 1) << 2) + (((buf[j+6*n] >> 1) & 1) << 1) + (((buf[j+7*n] >> 1) & 1) << 0)));
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PUSH_4BYTES(~((((buf[j+0*n] >> 0) & 1) << 7) + (((buf[j+1*n] >> 0) & 1) << 6) + (((buf[j+2*n] >> 0) & 1) << 5) + (((buf[j+3*n] >> 0) & 1) << 4) + (((buf[j+4*n] >> 0) & 1) << 3) + (((buf[j+5*n] >> 0) & 1) << 2) + (((buf[j+6*n] >> 0) & 1) << 1) + (((buf[j+7*n] >> 0) & 1) << 0)));
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}
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}
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break;
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case 4:
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for (int32_t i=h-1; i>=0; i--) {
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result = f_read(&bmpFile, buf, ((w+7)/8)*4, &read);
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if (result != FR_OK || read != ((w+7)/8)*4) {
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f_close(&bmpFile);
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return SDCARD_ERROR(result);
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}
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uint8_t mask = 1 << (i%8);
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for (uint32_t j=0; j<w/2; j++) {
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uint8_t * dst = dest + (i/8)*w*4 + j*8;
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uint8_t val = palette[(buf[j] >> 4) & 0x0F];
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*(dst+0) = ((*(dst+0)) & (~mask)) + ((val & 0x1) ? 0 : mask);
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*(dst+1) = ((*(dst+1)) & (~mask)) + ((val & 0x2) ? 0 : mask);
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*(dst+2) = ((*(dst+2)) & (~mask)) + ((val & 0x4) ? 0 : mask);
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*(dst+3) = ((*(dst+3)) & (~mask)) + ((val & 0x8) ? 0 : mask);
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val = palette[buf[j] & 0x0F];
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*(dst+4) = ((*(dst+4)) & (~mask)) + ((val & 0x1) ? 0 : mask);
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*(dst+5) = ((*(dst+5)) & (~mask)) + ((val & 0x2) ? 0 : mask);
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*(dst+6) = ((*(dst+6)) & (~mask)) + ((val & 0x4) ? 0 : mask);
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*(dst+7) = ((*(dst+7)) & (~mask)) + ((val & 0x8) ? 0 : mask);
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}
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}
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break;
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default:
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f_close(&bmpFile);
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return STR_INCOMPATIBLE;
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}
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f_close(&bmpFile);
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return 0;
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}
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void lcd_bmp(xcoord_t x, uint8_t y, const pm_uchar * img, uint8_t offset, uint8_t width)
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{
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const pm_uchar *q = img;
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#if LCD_W >= 260
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xcoord_t w = pgm_read_byte(q++);
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if (w == 255) w += pgm_read_byte(q++);
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#else
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uint8_t w = pgm_read_byte(q++);
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#endif
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if (!width) width = w;
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uint8_t hb = (pgm_read_byte(q++)+7)/8;
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q += 4*offset;
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for (uint8_t yb = 0; yb < hb; yb++) {
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uint8_t *p = &displayBuf[ (y / 8 + yb) * LCD_W + x ];
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for (xcoord_t i=0; i<width; i++) {
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for (uint8_t plan=0; plan<4; plan++) {
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uint8_t b = pgm_read_byte(q++);
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uint8_t ym8 = (y & 0x07);
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uint8_t *pp = p + plan*DISPLAY_PLAN_SIZE;
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LCD_BYTE_FILTER_PLAN(pp, ~(0xff << ym8), b << ym8);
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if (ym8) {
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uint8_t *r = pp + LCD_W;
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LCD_BYTE_FILTER_PLAN(r, ~(0xff >> (8-ym8)), b >> (8-ym8));
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}
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}
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p++;
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}
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}
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}
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