152 lines
4.2 KiB
C++
152 lines
4.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ags/shared/gfx/image.h"
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#include "ags/shared/util/file.h"
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#include "ags/shared/util/stream.h"
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#include "ags/lib/allegro.h"
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#include "common/file.h"
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#include "common/str.h"
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#include "common/stream.h"
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#include "common/textconsole.h"
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#include "image/bmp.h"
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#include "image/iff.h"
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#include "image/pcx.h"
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#include "image/tga.h"
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#define VGA_COLOR_TRANS(x) ((x) * 255 / 63)
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namespace AGS3 {
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template<class DECODER>
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BITMAP *decodeImageStream(Common::SeekableReadStream &stream, color *pal) {
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DECODER decoder;
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if (decoder.loadStream(stream)) {
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// Create the output surface
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const Graphics::Surface *src = decoder.getSurface();
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// Copy the decoded surface
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int bpp = 8 * src->format.bytesPerPixel;
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if (bpp == 24)
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bpp = 32;
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Surface *dest = (Surface *)create_bitmap_ex(bpp, src->w, src->h);
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dest->blitFrom(*src);
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// Copy the palette
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const Graphics::Palette &palP = decoder.getPalette();
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if (pal) {
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for (uint idx = 0; idx < palP.size(); ++idx) {
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palP.get(idx, pal[idx].r, pal[idx].g, pal[idx].b);
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pal[idx].filler = 0xff;
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}
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}
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return dest;
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} else {
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return nullptr;
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}
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}
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template<class DECODER>
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BITMAP *decodeImage(const char *filename, color *pal) {
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AGS::Shared::Stream *file = AGS3::AGS::Shared::File::OpenFileRead(filename);
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if (!file)
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return nullptr;
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AGS::Shared::ScummVMReadStream f(file);
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return decodeImageStream<DECODER>(f, pal);
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}
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template<class DECODER>
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BITMAP *decodeImage(PACKFILE *pf, color *pal) {
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if (!pf)
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return nullptr;
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AGS::Shared::ScummVMPackReadStream f(pf);
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f.seek(0);
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return decodeImageStream<DECODER>(f, pal);
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}
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BITMAP *load_bmp(const char *filename, color *pal) {
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return decodeImage<Image::BitmapDecoder>(filename, pal);
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}
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BITMAP *load_lbm(const char *filename, color *pal) {
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return decodeImage<Image::IFFDecoder>(filename, pal);
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}
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BITMAP *load_pcx(const char *filename, color *pal) {
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return decodeImage<Image::PCXDecoder>(filename, pal);
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}
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BITMAP *load_tga(const char *filename, color *pal) {
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return decodeImage<Image::TGADecoder>(filename, pal);
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}
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BITMAP *load_bitmap(const char *filename, color *pal) {
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Common::String fname(filename);
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if (fname.hasSuffixIgnoreCase(".bmp"))
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return load_bmp(filename, pal);
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else if (fname.hasSuffixIgnoreCase(".lbm"))
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return load_lbm(filename, pal);
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else if (fname.hasSuffixIgnoreCase(".pcx"))
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return load_pcx(filename, pal);
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else if (fname.hasSuffixIgnoreCase(".tga"))
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return load_tga(filename, pal);
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else
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error("Unknown image file - %s", filename);
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}
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BITMAP *load_bitmap(PACKFILE *pf, color *pal) {
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BITMAP *result;
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if ((result = decodeImage<Image::BitmapDecoder>(pf, pal)) != nullptr)
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return result;
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if ((result = decodeImage<Image::IFFDecoder>(pf, pal)) != nullptr)
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return result;
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if ((result = decodeImage<Image::PCXDecoder>(pf, pal)) != nullptr)
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return result;
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if ((result = decodeImage<Image::TGADecoder>(pf, pal)) != nullptr)
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return result;
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error("Unknown image file");
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}
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bool save_bitmap(Common::WriteStream &out, BITMAP *bmp, const RGB *pal) {
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const Graphics::ManagedSurface &src = bmp->getSurface();
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if (bmp->format.isCLUT8() && pal) {
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byte palette[256 * 3];
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for (int c = 0, i = 0; c < 256; ++c, i += 3) {
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palette[i] = VGA_COLOR_TRANS(pal[c].r);
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palette[i + 1] = VGA_COLOR_TRANS(pal[c].g);
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palette[i + 2] = VGA_COLOR_TRANS(pal[c].b);
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}
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return Image::writeBMP(out, src, palette);
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} else {
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return Image::writeBMP(out, src);
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}
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}
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} // namespace AGS
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