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https://github.com/scummvm/scummvm.git
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152 lines
4 KiB
C++
152 lines
4 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 "common/formats/formatinfo.h"
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#include "common/translation.h"
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#include "common/util.h"
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#include "image/bmp.h"
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#include "image/png.h"
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namespace Common {
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namespace FormatInfo {
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struct FormatTypeInfo {
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const char *_shortExtension; ///< Extension limited to 3 characters
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const char *_longExtension; ///< Extension with no length limit
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};
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const FormatTypeInfo g_formatTypeInfo[kCount] = {
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{nullptr, nullptr},
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// Image formats
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{"bmp", nullptr},
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{"png", nullptr},
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{"jpg", nullptr},
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{"pct", "pict"},
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// Binary formats
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{"application/octet-stream", nullptr},
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};
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ImageFormatCharacteristics::ImageFormatCharacteristics()
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: _lossiness(kLossinessUnknown), _supportAlpha(false), _supportPalette(false), _maxBitDepth(0) {
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}
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ImageSaveProperties::ImageSaveProperties() : _qualityLevel(75) {
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}
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bool getImageFormatCharacteristics(FormatID format, ImageFormatCharacteristics &outCharacteristics) {
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outCharacteristics = ImageFormatCharacteristics();
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switch (format) {
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case kPICT:
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outCharacteristics._supportPalette = true;
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outCharacteristics._maxBitDepth = 24;
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outCharacteristics._lossiness = kLossinessEither;
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break;
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case kBMP:
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outCharacteristics._supportPalette = true;
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outCharacteristics._maxBitDepth = 24;
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outCharacteristics._lossiness = kLossinessLossless;
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break;
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case kPNG:
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outCharacteristics._supportPalette = true;
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outCharacteristics._supportAlpha = true;
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outCharacteristics._maxBitDepth = 32;
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outCharacteristics._lossiness = kLossinessLossless;
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break;
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case kJPEG:
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outCharacteristics._maxBitDepth = 24;
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outCharacteristics._lossiness = kLossinessLossy;
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break;
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default:
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return false;
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}
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return true;
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}
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const char *getFormatExtension(Common::FormatInfo::FormatID format, bool limitTo3Characters) {
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const FormatTypeInfo &typeInfo = g_formatTypeInfo[format];
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if (!limitTo3Characters && typeInfo._longExtension != nullptr)
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return typeInfo._longExtension;
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return typeInfo._shortExtension;
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}
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Common::U32String getFormatSaveDescription(Common::FormatInfo::FormatID format) {
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switch (format) {
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case kBMP:
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return _("Bitmap Image File");
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case kPNG:
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return _("PNG Image File");
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case kJPEG:
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return _("JPEG Image File");
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case kPICT:
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return _("QuickDraw PICT Image File");
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case kUntypedBinary:
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default:
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return _("Data File");
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}
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}
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#ifdef USE_PNG
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static bool savePNG(Common::WriteStream &stream, const Graphics::Surface &surf, const byte *palette, const ImageSaveProperties &props) {
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return Image::writePNG(stream, surf, palette);
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}
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#endif
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static bool saveBMP(Common::WriteStream &stream, const Graphics::Surface &surf, const byte *palette, const ImageSaveProperties &props) {
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return Image::writeBMP(stream, surf, palette);
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}
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ImageSaveCallback_t getImageSaveFunction(FormatID format) {
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switch (format) {
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#ifdef USE_PNG
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case kPNG:
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return savePNG;
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#endif
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case kBMP:
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return saveBMP;
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default:
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return nullptr;
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}
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}
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FormatSupportLevel getFormatSupportLevel(Common::FormatInfo::FormatID format) {
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switch (format) {
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case kPICT:
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return kFormatSupportLevelAvoid;
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case kPNG:
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case kJPEG:
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return kFormatSupportLevelPreferred;
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default:
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return kFormatSupportLevelDefault;
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}
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}
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} // End of namespace FormatInfo
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} // End of namespace Common
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