Merge pull request #3197 from opentx/projectkk2glider/issue_3167_image_support

Projectkk2glider/issue 3167 image support

radio/src/bmp.cpp

@@ -422,3 +422,97 @@ const char *writeScreenshot()
 
   return NULL;
 }
+
+#if defined(PCBHORUS)
+
+
+#define STB_IMAGE_IMPLEMENTATION
+#define STBI_ONLY_PNG
+#define STBI_ONLY_JPEG
+#define STBI_ONLY_BMP
+#define STBI_NO_STDIO
+#include "thirdparty/Stb/stb_image.h"
+
+
+// fill 'data' with 'size' bytes.  return number of bytes actually read
+int stbc_read(void *user, char *data, int size) 
+{
+  FIL * fp = (FIL *)user;
+  UINT br = 0;
+  FRESULT res = f_read(fp, data, size, &br);
+  if (res == FR_OK) {
+    return (int)br;
+  }
+  return 0;
+}
+
+// skip the next 'n' bytes, or 'unget' the last -n bytes if negative
+void stbc_skip(void *user, int n)
+{
+  FIL * fp = (FIL *)user;
+  f_lseek(fp, f_tell(fp) + n);
+}
+
+// returns nonzero if we are at end of file/data
+int stbc_eof(void *user)
+{
+  FIL * fp = (FIL *)user;
+  return f_eof(fp);
+}
+
+// callbacks for stb-image
+const stbi_io_callbacks stbCallbacks = {
+  stbc_read,
+  stbc_skip,
+  stbc_eof
+};
+
+
+const char * imgLoad(uint8_t * bmp, const char * filename, uint16_t width, uint16_t height)
+{
+  FIL imgFile;
+
+  // if (width > LCD_W) {
+  //   return STR_INCOMPATIBLE;
+  // }
+
+  FRESULT result = f_open(&imgFile, filename, FA_OPEN_EXISTING | FA_READ);
+  if (result != FR_OK) {
+    return SDCARD_ERROR(result);
+  }
+
+  // if (f_size(&bmpFile) < 14) {
+  //   f_close(&bmpFile);
+  //   return STR_INCOMPATIBLE;
+  // }
+
+  int x,y,n;
+  unsigned char *data = stbi_load_from_callbacks(&stbCallbacks, &imgFile, &x, &y, &n, 3);
+  f_close(&imgFile);
+  
+  if (!data) {
+    return "stb error";
+  }
+
+  //convert to 565 fromat
+  // todo use dma2d for conversion from 888 to 565
+  unsigned char *p = data;
+  uint16_t * dest = (uint16_t *)bmp;
+
+  *dest++ = min<int>(width, x);
+  *dest++ = min<int>(height, y);
+
+  for(int row = 0; row < min<int>(height, y); ++row) {
+    unsigned char *l = p;
+    for(int col = 0; col < min<int>(width, x); ++col) {
+      *dest = RGB(l[0], l[1], l[2]);
+      ++dest;
+      l += 3;
+    }
+    p += 3 * x;
+  }
+  stbi_image_free(data);
+  return 0;
+}
+
+#endif    // if defined(PCBHORUS)

radio/src/gui/horus/lcd.h

@@ -311,6 +311,8 @@ void lcdSetContrast();
 #define lcdOff(...)
 
 const char * bmpLoad(uint8_t * dest, const char * filename, uint16_t width, uint16_t height);
+const char * imgLoad(uint8_t * dest, const char * filename, uint16_t width, uint16_t height);
+
 
 #if defined(BOOT)
   #define BLINK_ON_PHASE               (0)

radio/src/gui/horus/menu_general_sdmanager.cpp

@@ -357,10 +357,10 @@ bool menuGeneralSdManager(evt_t _event)
   }
 
   char * ext = getFileExtension(reusableBuffer.sdmanager.lines[index], SD_SCREEN_FILE_LENGTH+1);
-  if (ext && !strcasecmp(ext, BITMAPS_EXT)) {
+  if (ext && (!strcasecmp(ext, BITMAPS_EXT) || !strcasecmp(ext, PNG_EXT) || !strcasecmp(ext, JPG_EXT))) {
     if (lastBitmap != menuVerticalPosition) {
       lastBitmap = menuVerticalPosition;
-      if (bmpLoad(modelBitmap, reusableBuffer.sdmanager.lines[index], MODEL_BITMAP_WIDTH, MODEL_BITMAP_HEIGHT)) {
+      if (imgLoad(modelBitmap, reusableBuffer.sdmanager.lines[index], MODEL_BITMAP_WIDTH, MODEL_BITMAP_HEIGHT)) {
         ((uint32_t *)modelBitmap)[0] = 0;
       }
     }

radio/src/sdcard.h

@@ -46,6 +46,8 @@
 #define LOGS_EXT            ".csv"
 #define SOUNDS_EXT          ".wav"
 #define BITMAPS_EXT         ".bmp"
+#define PNG_EXT             ".png"
+#define JPG_EXT             ".jpg"
 #define SCRIPTS_EXT         ".lua"
 #define TEXT_EXT            ".txt"
 #define FIRMWARE_EXT        ".bin"