From 36f38e01ddd23f332374093fa213ca08429729b1 Mon Sep 17 00:00:00 2001
From: Leo Howell <leo@lwh.jp>
Date: Mon, 28 Sep 2009 22:09:47 +0900
Subject: QR masks

---
 lpg/libqr/qr-bitmap.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'lpg/libqr/qr-bitmap.c')

diff --git a/lpg/libqr/qr-bitmap.c b/lpg/libqr/qr-bitmap.c
index e42b550..1a5ca52 100644
--- a/lpg/libqr/qr-bitmap.c
+++ b/lpg/libqr/qr-bitmap.c
@@ -48,6 +48,25 @@ void qr_bitmap_destroy(struct qr_bitmap * bmp)
         }
 }
 
+struct qr_bitmap * qr_bitmap_clone(const struct qr_bitmap * src)
+{
+        struct qr_bitmap * bmp;
+        size_t size;
+
+        bmp = qr_bitmap_create(src->width, src->height, !!src->mask);
+        if (!bmp)
+                return 0;
+
+        assert(bmp->stride == src->stride);
+
+        size = bmp->width * bmp->stride;
+        memcpy(bmp->bits, src->bits, size);
+        if (bmp->mask)
+                memcpy(bmp->mask, src->mask, size);
+
+        return bmp;
+}
+
 void qr_bitmap_merge(struct qr_bitmap * dest, const struct qr_bitmap * src)
 {
         unsigned char * d, * s, * m;
-- 
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