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| author | Ole Loots <ole@monochrom.net> | 2012-07-23 02:03:09 +0200 |
|---|---|---|
| committer | Ole Loots <ole@monochrom.net> | 2012-07-23 02:03:09 +0200 |
| commit | 2158ed7bce81e884effecf747ee8430042c08056 (patch) | |
| tree | d4e8bdb989357a86aa6f9a9b9c79a35b8a5579dd /atari/bitmap.c | |
| parent | 5433eecfeaf0517a3ed91b2a2beb9f78eaf4cef6 (diff) | |
| download | netsurf-2158ed7bce81e884effecf747ee8430042c08056.tar.gz netsurf-2158ed7bce81e884effecf747ee8430042c08056.tar.bz2 | |
moved "bitmap_resize()" to bitmap.c
Diffstat (limited to 'atari/bitmap.c')
| -rwxr-xr-x | atari/bitmap.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/atari/bitmap.c b/atari/bitmap.c index 9cfebcaf6..1201ac88a 100755 --- a/atari/bitmap.c +++ b/atari/bitmap.c @@ -429,6 +429,61 @@ size_t bitmap_get_bpp(void *bitmap) return bm->bpp; } +bool bitmap_resize(struct bitmap *img, HermesHandle hermes_h, + HermesFormat *fmt, int nw, int nh)
+{
+ short bpp = bitmap_get_bpp( img );
+ int stride = bitmap_get_rowstride( img );
+ int err;
+
+ if( img->resized != NULL ) {
+ if( img->resized->width != nw || img->resized->height != nh ) {
+ bitmap_destroy( img->resized );
+ img->resized = NULL;
+ } else {
+ /* the bitmap is already resized */
+ return(true);
+ }
+ }
+
+ /* allocate the mem for resized bitmap */
+ img->resized = bitmap_create_ex( nw, nh, bpp, nw*bpp, 0, NULL );
+ if( img->resized == NULL ) {
+ printf("W: %d, H: %d, bpp: %d\n", nw, nh, bpp);
+ assert(img->resized);
+ return(false);
+ }
+
+ /* allocate an converter, only for resizing */
+ err = Hermes_ConverterRequest( hermes_h,
+ fmt,
+ fmt
+ );
+ if( err == 0 ) {
+ return(false);
+ }
+
+ err = Hermes_ConverterCopy( hermes_h,
+ img->pixdata,
+ 0, /* x src coord of top left in pixel coords */
+ 0, /* y src coord of top left in pixel coords */
+ bitmap_get_width( img ), bitmap_get_height( img ),
+ stride, /* stride as bytes */
+ img->resized->pixdata,
+ 0, /* x dst coord of top left in pixel coords */
+ 0, /* y dst coord of top left in pixel coords */
+ nw, nh,
+ bitmap_get_rowstride(img->resized) /* stride as bytes */
+ );
+ if( err == 0 ) {
+ bitmap_destroy( img->resized );
+ img->resized = NULL;
+ return(false);
+ }
+
+ return(true);
+} + /* * Local Variables: * c-basic-offset:8 |