Diff: main.cpp

Revision:

1:28ab8d9ab8e4

Parent:

0:bdbd3d6fc5d5

--- a/main.cpp	Fri Dec 07 11:25:01 2012 +0000
+++ b/main.cpp	Wed Apr 30 08:07:51 2014 +0000
@@ -1,19 +1,88 @@
 #include "mbed.h"
 #include "SDFileSystem.h"
- 
-SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
- 
-int main() {
-    printf("Hello World!\n");   
- 
-    mkdir("/sd/mydir", 0777);
-    
-    FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
-    if(fp == NULL) {
-        error("Could not open file for write\n");
+#include "AitendoTFT.h"
+#include "TinyJpgDec.h"
+
+AitendoTFT tft;
+SDFileSystem sd(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, "sd"); // the pinout on the mbed Cool Components workshop board
+
+JDEC jdec;
+WORD work[3100/sizeof(WORD)];
+FileHandle *fh;
+
+UINT jpeg_input_func(JDEC *jd, BYTE *buff, UINT ndata)
+{
+    if(buff) {
+        size_t n = fh->read(buff, ndata);
+        return n == (size_t)-1 ? 0 : n;
+    } else {
+        off_t t = fh->lseek( ndata, SEEK_CUR);
+        return t == (off_t)-1 ? 0 : ndata;
     }
-    fprintf(fp, "Hello fun SD Card World!");
-    fclose(fp); 
- 
-    printf("Goodbye World!\n");
+}
+
+UINT jpeg_output_func(JDEC *jd, void *bitmap, JRECT *rect)
+{
+    WORD *src = (WORD *)bitmap;
+    int x0 = rect->left;
+    int x1 = rect->right;
+    int y0 = rect->top;
+    int y1 = rect->bottom;
+    int w = x1 - x0 + 1;
+
+    if(y0 >= AitendoTFT::TFT_HEIGHT ||x0 >= AitendoTFT::TFT_WIDTH)
+        return 1;
+
+    if(x1 > AitendoTFT::TFT_WIDTH-1) x1 = AitendoTFT::TFT_WIDTH - 1;
+    if(y1 > AitendoTFT::TFT_HEIGHT-1) y1 = AitendoTFT::TFT_HEIGHT - 1;
+
+    if(x0 == 0)
+        printf("\r %d", y0);
+
+    for(int y= y0; y <= y1; y++) {
+        tft.setPos(x0, y);
+        WORD *p = src + w * (y - y0);
+        for(int x=x0; x <= x1; x++)
+            tft.put(*p++);
+    }
+    return 1;
 }
+
+int main()
+{
+    JRESULT r;
+    int cFile;
+    char path[80];
+
+
+    printf("Nucleo Picture Viewer\n");
+
+    while(1) {
+        cFile = 0;
+        DirHandle *dh = sd.opendir("/images");
+        if(dh == NULL)
+            error("/images not found.\n");
+        else {
+            while(1) {
+                struct dirent *de = dh->readdir();
+                if(de == NULL) break;
+                char *ext = strrchr(de->d_name,'.');
+                if(ext == NULL || strcmp(ext,".jpg")!=0) continue;
+                cFile++;
+                snprintf(path, sizeof path, "images/%s", de->d_name);
+                printf("\nshow %s\n", path);
+                fh = sd.open(path, 0);
+                if(fh == NULL) error("%s not found.",path);
+
+                r = jd_prepare(&jdec, jpeg_input_func, work, sizeof work, fh);
+                if(r != JDR_OK) error("jd_prepare error:%d", r);
+                r = jd_decomp(&jdec, jpeg_output_func, 0);
+                fh->close();
+                if( r != JDR_OK) error("jd_decomp error:%d", r);
+                wait(10);
+            }
+            dh->closedir();
+        }
+        if(cFile == 0) error("no .jpg file found in /images");
+    }
+}