diff options
Diffstat (limited to 'engines/scumm')
-rw-r--r-- | engines/scumm/thumbnail.cpp | 96 |
1 files changed, 20 insertions, 76 deletions
diff --git a/engines/scumm/thumbnail.cpp b/engines/scumm/thumbnail.cpp index 40f1ee48e5..da5cad945e 100644 --- a/engines/scumm/thumbnail.cpp +++ b/engines/scumm/thumbnail.cpp @@ -27,76 +27,39 @@ #include "common/system.h" #include "common/savefile.h" #include "graphics/scaler.h" +#include "graphics/thumbnail.h" #include "scumm/scumm.h" namespace Scumm { -#define THMB_VERSION 1 - -struct ThumbnailHeader { - uint32 type; - uint32 size; - byte version; - uint16 width, height; - byte bpp; -}; - -#define ThumbnailHeaderSize (4+4+1+2+2+1) - -inline void colorToRGB(uint16 color, uint8 &r, uint8 &g, uint8 &b) { - r = (((color >> 11) & 0x1F) << 3); - g = (((color >> 5) & 0x3F) << 2); - b = ((color&0x1F) << 3); -} - Graphics::Surface *ScummEngine::loadThumbnail(Common::SeekableReadStream *file) { - ThumbnailHeader header; - - header.type = file->readUint32BE(); - // We also accept the bad 'BMHT' header here, for the sake of compatibility - // with some older savegames which were written incorrectly due to a bug in - // ScummVM which wrote the thumb header type incorrectly on LE systems. - if (header.type != MKID_BE('THMB') && header.type != MKID_BE('BMHT')) - return 0; - - header.size = file->readUint32BE(); - header.version = file->readByte(); - - if (header.version > THMB_VERSION) { - file->skip(header.size - 9); - warning("Loading a newer thumbnail version"); - return 0; - } + // TODO: Until backwards seeking in compressed save files is not supported + // We can not use this. - header.width = file->readUint16BE(); - header.height = file->readUint16BE(); - header.bpp = file->readByte(); - - // TODO: support other bpp values than 2 - if (header.bpp != 2) { - file->skip(header.size - 14); - return 0; - } + //if (!Graphics::checkThumbnailHeader(*file)) + // return 0; Graphics::Surface *thumb = new Graphics::Surface(); - thumb->create(header.width, header.height, sizeof(OverlayColor)); - - OverlayColor* pixels = (OverlayColor *)thumb->pixels; - - for (int y = 0; y < thumb->h; ++y) { - for (int x = 0; x < thumb->w; ++x) { - uint8 r, g, b; - colorToRGB(file->readUint16BE(), r, g, b); - - // converting to current OSystem Color - *pixels++ = _system->RGBToColor(r, g, b); - } + assert(thumb); + if (!Graphics::loadThumbnail(*file, *thumb)) { + delete thumb; + return 0; } return thumb; } void ScummEngine::saveThumbnail(Common::OutSaveFile *file) { + // Until we support no thumbnails in the SCUMM save formats for NDS + // we save a dummy thumbnail. + // + // TODO: Actually all what has to be done about it, is to update + // the code in engines/scumm/saveload.o which skips the saveheader. + // Currently impossible because of lacking backward seek support for + // compressed save files. + // When we change that code to use the new API from graphics/thumbnail.h + // it should be all fine to save no header at all for NDS. + Graphics::Surface thumb; #if !defined(__DS__) @@ -104,26 +67,7 @@ void ScummEngine::saveThumbnail(Common::OutSaveFile *file) { #endif thumb.create(kThumbnailWidth, kThumbnailHeight2, sizeof(uint16)); - ThumbnailHeader header; - header.type = MKID_BE('THMB'); - header.size = ThumbnailHeaderSize + thumb.w*thumb.h*thumb.bytesPerPixel; - header.version = THMB_VERSION; - header.width = thumb.w; - header.height = thumb.h; - header.bpp = thumb.bytesPerPixel; - - file->writeUint32BE(header.type); - file->writeUint32BE(header.size); - file->writeByte(header.version); - file->writeUint16BE(header.width); - file->writeUint16BE(header.height); - file->writeByte(header.bpp); - - // TODO: for later this shouldn't be casted to uint16... - uint16* pixels = (uint16 *)thumb.pixels; - for (uint16 p = 0; p < thumb.w*thumb.h; ++p, ++pixels) - file->writeUint16BE(*pixels); - + Graphics::saveThumbnail(*file, thumb); thumb.free(); } |