1 files changed, 51 insertions, 0 deletions
diff --git a/bitmap.js b/bitmap.js
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index 0000000..03f5127
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+++ b/bitmap.js
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+"use strict";
+/*
+   Copyright (C) 2012 by Jeremy P. White <jwhite@codeweavers.com>
+
+   This file is part of spice-html5.
+
+   spice-html5 is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   spice-html5 is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with spice-html5.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+/*----------------------------------------------------------------------------
+**  bitmap.js
+**      Handle SPICE_IMAGE_TYPE_BITMAP
+**--------------------------------------------------------------------------*/
+function convert_spice_bitmap_to_web(context, spice_bitmap)
+{
+    var ret;
+    var offset, x;
+    var u8 = new Uint8Array(spice_bitmap.data);
+    if (spice_bitmap.format != SPICE_BITMAP_FMT_32BIT &&
+        spice_bitmap.format != SPICE_BITMAP_FMT_RGBA)
+        return undefined;
+
+    ret = context.createImageData(spice_bitmap.x, spice_bitmap.y);
+    for (offset = 0; offset < (spice_bitmap.y * spice_bitmap.stride); )
+        for (x = 0; x < spice_bitmap.x; x++, offset += 4)
+        {
+            ret.data[offset + 0 ] = u8[offset + 2];
+            ret.data[offset + 1 ] = u8[offset + 1];
+            ret.data[offset + 2 ] = u8[offset + 0];
+
+            // FIXME - We effectively treat all images as having SPICE_IMAGE_FLAGS_HIGH_BITS_SET
+            if (spice_bitmap.format == SPICE_BITMAP_FMT_32BIT)
+                ret.data[offset + 3] = 255;
+            else
+                ret.data[offset + 3] = u8[offset];
+        }
+
+    return ret;
+}