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