fix bitmap scallers smooth_resize_bitmap() and simple_resize_bitmap() to properly handle LCD_STRIDEFORMAT == VERTICAL_STRIDE case

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28185 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 21 insertions, 8 deletions

diff --git a/apps/plugins/lib/pluginlib_bmp.c b/apps/plugins/lib/pluginlib_bmp.c
index 148aa8e1de..708abfa4a4 100644
--- a/apps/plugins/lib/pluginlib_bmp.c
+++ b/apps/plugins/lib/pluginlib_bmp.c
@@ -86,31 +86,45 @@ int save_bmp_file( char* filename, struct bitmap *bm )
     rb->close( fh );
     return 1;
 }
-#endif
+#endif /* HAVE_LCD_COLOR */
 
 /**
    Very simple image scale from src to dst (nearest neighbour).
    Source and destination dimensions are read from the struct bitmap.
+
+   FB_DATA define is to properly scale with greylib
 */
+#if LCD_DEPTH > 8
+#define FB_DATA fb_data
+#else
+#define FB_DATA unsigned char
+#endif
 void simple_resize_bitmap(struct bitmap *src, struct bitmap *dst)
 {
+#if defined(LCD_STRIDEFORMAT) && \
+    (LCD_STRIDEFORMAT == VERTICAL_STRIDE)
+    const int srcw = src->height;
+    const int srch = src->width;
+    const int dstw = dst->height;
+    const int dsth = dst->width;
+#else
     const int srcw = src->width;
     const int srch = src->height;
     const int dstw = dst->width;
     const int dsth = dst->height;
-    const fb_data *srcd = (fb_data*)(src->data);
-    const fb_data *dstd = (fb_data*)(dst->data);
-
+#endif
+    const FB_DATA *srcd = (FB_DATA *)(src->data);
+    const FB_DATA *dstd = (FB_DATA *)(dst->data);
     const long xrstep = ((srcw-1) << 8) / (dstw-1);
     const long yrstep = ((srch-1) << 8) / (dsth-1);
-    fb_data *src_row, *dst_row;
+    FB_DATA *src_row, *dst_row;
     long xr, yr = 0;
     int src_x, src_y, dst_x, dst_y;
     for (dst_y=0; dst_y < dsth; dst_y++)
     {
         src_y = (yr >> 8);
-        src_row = (fb_data*)&srcd[src_y * srcw];
-        dst_row = (fb_data*)&dstd[dst_y * dstw];
+        src_row = (FB_DATA *)&srcd[src_y * srcw];
+        dst_row = (FB_DATA *)&dstd[dst_y * dstw];
         for (xr=0,dst_x=0; dst_x < dstw; dst_x++)
         {
             src_x = (xr >> 8);
@@ -120,7 +134,6 @@ void simple_resize_bitmap(struct bitmap *src, struct bitmap *dst)
         yr += yrstep;
     }
 }
-
 #endif /* LCD_DEPTH > 1 */
 
 #include "wrappers.h"