mirror of
https://gitlab.uni-freiburg.de/opensourcevdi/spice
synced 2025-12-26 22:48:19 +00:00
121 lines
4.2 KiB
C++
121 lines
4.2 KiB
C++
/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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/*
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Copyright (C) 2009 Red Hat, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "common.h"
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#include "red_pixmap_sw.h"
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#include "red_pixmap.h"
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#include "debug.h"
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#include "utils.h"
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#include "pixels_source_p.h"
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#include "platform_utils.h"
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struct RedPixmap_p {
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PixelsSource_p pixels_source_p;
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HBITMAP prev_bitmap;
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};
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RedPixmapSw::RedPixmapSw(int width, int height, RedDrawable::Format format,
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bool top_bottom, RedWindow *win)
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: RedPixmap(width, height, format, top_bottom)
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{
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DWORD *pixel_format;
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ASSERT(format == RedDrawable::ARGB32 || format == RedDrawable::RGB32
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|| format == RedDrawable::RGB16_555 || format == RedDrawable::RGB16_565
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|| format == RedDrawable::A1);
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ASSERT(sizeof(RedPixmap_p) <= PIXELES_SOURCE_OPAQUE_SIZE);
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struct {
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BITMAPINFO inf;
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RGBQUAD palette[255];
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} bitmap_info;
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memset(&bitmap_info, 0, sizeof(bitmap_info));
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bitmap_info.inf.bmiHeader.biSize = sizeof(bitmap_info.inf.bmiHeader);
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bitmap_info.inf.bmiHeader.biWidth = _width;
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bitmap_info.inf.bmiHeader.biHeight = top_bottom ? -_height : _height;
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/*#ifdef USE_OPENGL
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// -----------------------------------------------------------------------------
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// ensure valid access to additional stride.
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// apparently glReadPixels validate ((ptr of last line) + GL_PACK_ROW_LENGTH + 1).
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// seen on "ATI Radeon HD 2400 PRO" "2.0.6479 Release"
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if (top_bottom) {
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bitmap_info.inf.bmiHeader.biHeight--;
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} else {
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bitmap_info.inf.bmiHeader.biHeight++;
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}
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//------------------------------------------------------------------------------
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#endif*/
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bitmap_info.inf.bmiHeader.biPlanes = 1;
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bitmap_info.inf.bmiHeader.biBitCount = RedDrawable::format_to_bpp(format);
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if (format == RedDrawable::RGB16_565) {
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bitmap_info.inf.bmiHeader.biCompression = BI_BITFIELDS;
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} else {
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bitmap_info.inf.bmiHeader.biCompression = BI_RGB;
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}
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switch (format) {
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case RedDrawable::A1:
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bitmap_info.inf.bmiColors[0].rgbRed = 0;
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bitmap_info.inf.bmiColors[0].rgbGreen = 0;
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bitmap_info.inf.bmiColors[0].rgbBlue = 0;
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#ifndef __MINGW32__
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// inf.bmiColors is [1] in mingw/include/wingdi.h
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bitmap_info.inf.bmiColors[1].rgbRed = 0xff;
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bitmap_info.inf.bmiColors[1].rgbGreen = 0xff;
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bitmap_info.inf.bmiColors[1].rgbBlue = 0xff;
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#endif
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break;
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case RedDrawable::RGB16_565:
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pixel_format = (DWORD *)bitmap_info.inf.bmiColors;
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pixel_format[0] = 0xf800;
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pixel_format[1] = 0x07e0;
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pixel_format[2] = 0x001f;
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break;
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case RedDrawable::ARGB32:
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case RedDrawable::RGB32:
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case RedDrawable::RGB16_555:
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break;
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}
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AutoDC dc(create_compatible_dc());
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AutoGDIObject bitmap(CreateDIBSection(dc.get(), &bitmap_info.inf, 0,
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(VOID **)&_data, NULL, 0));
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if (!bitmap.valid()) {
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THROW("create compatible bitmap failed");
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}
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/*#ifdef USE_OPENGL
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SetWindowOrgEx(dc.get(), 0, -1, NULL); // compensate for one pad line
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#endif*/
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((RedPixmap_p*)get_opaque())->prev_bitmap = (HBITMAP)SelectObject(dc.get(), bitmap.release());
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((RedPixmap_p*)get_opaque())->pixels_source_p.dc = dc.release();
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}
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RedPixmapSw::~RedPixmapSw()
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{
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HDC dc = ((RedPixmap_p*)get_opaque())->pixels_source_p.dc;
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if (dc) {
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HBITMAP prev_bitmap = ((RedPixmap_p*)get_opaque())->prev_bitmap;
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HBITMAP bitmap = (HBITMAP)SelectObject(dc, prev_bitmap);
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DeleteObject(bitmap);
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DeleteDC(dc);
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}
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}
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