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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;
}
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