first commit

album/album.c

@@ -0,0 +1,60 @@
+#include "album.h"
+#include "../common/device.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static unsigned int *g_pixels[ALBUM_MAX];
+static int g_w[ALBUM_MAX], g_h[ALBUM_MAX];
+static int g_idx = 0;
+static int g_count = 0;
+
+void album_init(const char *paths[], int count)
+{
+    int i;
+    for (i = 0; i < count && i < ALBUM_MAX; i++)
+    {
+        int w, h;
+        unsigned int *p = bmp_load(paths[i], &w, &h);
+        if (p)
+        {
+            g_pixels[i] = p;
+            g_w[i] = w;
+            g_h[i] = h;
+            printf("Album[%d]: %s (%dx%d)\n", i, paths[i], w, h);
+        }
+        else
+        {
+            g_pixels[i] = NULL;
+            printf("Album[%d]: FAILED to load %s\n", i, paths[i]);
+        }
+    }
+    g_count = count;
+    g_idx = 0;
+}
+
+void album_show(int idx)
+{
+    if (idx < 0 || idx >= g_count) return;
+    if (g_pixels[idx] == NULL) return;
+
+    g_idx = idx;
+    bmp_display(g_pixels[idx], g_w[idx], g_h[idx]);
+}
+
+void album_prev(void)
+{
+    if (g_count == 0) return;
+    g_idx = (g_idx > 0) ? g_idx - 1 : g_count - 1;
+    album_show(g_idx);
+}
+
+void album_next(void)
+{
+    if (g_count == 0) return;
+    g_idx = (g_idx + 1 < g_count) ? g_idx + 1 : 0;
+    album_show(g_idx);
+}
+
+int album_current(void) { return g_idx; }
+int album_count(void)   { return g_count; }