initial commit

2026-02-12 00:45:31 -08:00
commit 5f168f370b
3024 changed files with 804889 additions and 0 deletions
--- a/examples/LVGL_Image/LCD_Image.cpp
+++ b/examples/LVGL_Image/LCD_Image.cpp
@@ -0,0 +1,124 @@
+#include "LCD_Image.h"
+  
+PNG png;
+File Image_file;
+
+uint16_t Image_CNT;   
+char SD_Image_Name[100][100] ;    
+char File_Image_Name[100][100] ;  
+
+int16_t xpos = 0;
+int16_t ypos = 0;
+void * pngOpen(const char *filePath, int32_t *size) {
+  Image_file = SD.open(filePath);
+  *size = Image_file.size();
+  return &Image_file;
+}
+
+void pngClose(void *handle) {
+  File Image_file = *((File*)handle);
+  if (Image_file) Image_file.close();
+}
+
+int32_t pngRead(PNGFILE *page, uint8_t *buffer, int32_t length) {
+  if (!Image_file) return 0;
+  page = page; // Avoid warning
+  return Image_file.read(buffer, length);
+}
+
+int32_t pngSeek(PNGFILE *page, int32_t position) {
+  if (!Image_file) return 0;
+  page = page; // Avoid warning
+  return Image_file.seek(position);
+}
+//=========================================v==========================================
+//                                      pngDraw
+//====================================================================================
+// This next function will be called during decoding of the png file to
+// render each image line to the TFT.  If you use a different TFT library
+// you will need to adapt this function to suit.
+// Callback function to draw pixels to the display
+static uint16_t lineBuffer[MAX_IMAGE_WIDTH];
+void pngDraw(PNGDRAW *pDraw) {
+  png.getLineAsRGB565(pDraw, lineBuffer, PNG_RGB565_BIG_ENDIAN, 0xffffffff);
+  uint32_t size = pDraw->iWidth;
+  for (size_t i = 0; i < size; i++) {
+    lineBuffer[i] = (((lineBuffer[i] >> 8) & 0xFF) | ((lineBuffer[i] << 8) & 0xFF00));        //  所有数据修正
+  }
+  LCD_addWindow(xpos, pDraw->y, xpos + pDraw->iWidth, ypos + pDraw->y + 1,lineBuffer);                   // x_end End index on x-axis (x_end not included)
+
+}
+/////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////////////
+
+void Search_Image(const char* directory, const char* fileExtension) {        
+  Image_CNT = Folder_retrieval(directory,fileExtension,SD_Image_Name,100);
+  if(Image_CNT) {  
+    for (int i = 0; i < Image_CNT; i++) {
+      strcpy(File_Image_Name[i], SD_Image_Name[i]);
+      remove_file_extension(File_Image_Name[i]); 
+    }                  
+  }                                                             
+}
+void Show_Image(const char * filePath)
+{
+  printf("Currently display picture %s\r\n",filePath);
+  int16_t ret = png.open(filePath, pngOpen, pngClose, pngRead, pngSeek, pngDraw);                 
+  if (ret == PNG_SUCCESS) {                                                                          
+    printf("image specs: (%d x %d), %d bpp, pixel type: %d\r\n", png.getWidth(), png.getHeight(), png.getBpp(), png.getPixelType()); 
+    
+    uint32_t dt = millis();                                                                   
+    if (png.getWidth() > MAX_IMAGE_WIDTH) {                                                 
+      printf("Image too wide for allocated line buffer size!\r\n");                          
+    }
+    else {                                                                                  
+      ret = png.decode(NULL, 0);                                                             
+      png.close();                                                                      
+    }                                                                        
+    printf("%d ms\r\n",millis()-dt);              
+  }  
+}
+
+void Display_Image(const char* directory, const char* fileExtension, uint16_t ID)
+{
+  Search_Image(directory,fileExtension);
+  if(Image_CNT) {
+    String FilePath;
+    if (String(directory) == "/") {                               // Handle the case when the directory is the root
+      FilePath = String(directory) + SD_Image_Name[ID];
+    } else {
+      FilePath = String(directory) + "/" + SD_Image_Name[ID];
+    }
+    const char* filePathCStr = FilePath.c_str();          // Convert String to c_str() for Show_Image function
+    printf("Show  : %s \r\n", filePathCStr);              // Print file path for debugging
+    Show_Image(filePathCStr);                             // Show the image using the file path
+  }
+  else
+    printf("No files with extension '%s' found in directory: %s\r\n", fileExtension, directory);     
+
+}
+uint16_t Now_Image = 0;
+void Image_Next(const char* directory, const char* fileExtension)
+{
+  if(!digitalRead(BOOT_KEY_PIN)){ 
+    while(!digitalRead(BOOT_KEY_PIN));
+    Now_Image ++;
+    if(Now_Image == Image_CNT)
+      Now_Image = 0;
+    Display_Image(directory,fileExtension,Now_Image);
+  }
+}
+void Image_Next_Loop(const char* directory, const char* fileExtension,uint32_t NextTime)
+{
+  static uint32_t NextTime_Now=0;
+  NextTime_Now++;
+  if(NextTime_Now == NextTime)
+  {
+    NextTime_Now = 0;
+    Now_Image ++;
+    if(Now_Image == Image_CNT)
+      Now_Image = 0;
+    Display_Image(directory,fileExtension,Now_Image);
+  }
+}