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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "graphics/video/codecs/cdtoons.h"
#include "common/stream.h"
#include "common/system.h"
namespace Graphics {
struct CDToonsAction {
uint16 blockId;
Common::Rect rect;
};
struct CDToonsDiff {
byte *data;
uint32 size;
Common::Rect rect;
};
static Common::Rect readRect(Common::SeekableReadStream *stream) {
Common::Rect rect;
rect.top = stream->readUint16BE();
rect.left = stream->readUint16BE();
rect.bottom = stream->readUint16BE();
rect.right = stream->readUint16BE();
return rect;
}
CDToonsDecoder::CDToonsDecoder(uint16 width, uint16 height) {
debugN(5, "CDToons: width %d, height %d\n", width, height);
_surface = new Graphics::Surface();
_surface->create(width, height, 1);
_currentPaletteId = 0;
memset(_palette, 0, 256 * 3);
_dirtyPalette = false;
}
CDToonsDecoder::~CDToonsDecoder() {
delete _surface;
for (Common::HashMap<uint16, CDToonsBlock>::iterator i = _blocks.begin(); i != _blocks.end(); i++)
delete[] i->_value.data;
}
Graphics::Surface *CDToonsDecoder::decodeImage(Common::SeekableReadStream *stream) {
uint16 u0 = stream->readUint16BE(); // always 9?
uint16 frameId = stream->readUint16BE();
uint16 blocksValidUntil = stream->readUint16BE();
byte u6 = stream->readByte();
byte backgroundColor = stream->readByte();
debugN(5, "CDToons frame %d, size %d, unknown %04x (at 0), blocks valid until %d, unknown 6 is %02x, bkg colour is %02x\n",
frameId, stream->size(), u0, blocksValidUntil, u6, backgroundColor);
Common::Rect clipRect = readRect(stream);
debugN(9, "CDToons clipRect: (%d, %d) to (%d, %d)\n",
clipRect.left, clipRect.top, clipRect.right, clipRect.bottom);
Common::Rect dirtyRect = readRect(stream);
debugN(9, "CDToons dirtyRect: (%d, %d) to (%d, %d)\n",
dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom);
uint32 flags = stream->readUint32BE();
if (flags & 0x80)
error("CDToons: frame already processed?");
debugN(5, "CDToons flags: %08x\n", flags);
uint16 blockCount = stream->readUint16BE();
uint16 blockOffset = stream->readUint16BE();
debugN(9, "CDToons: %d blocks at 0x%04x\n",
blockCount, blockOffset);
// max block id?
uint16 u32 = stream->readUint16BE();
debugN(5, "CDToons unknown at 32: %04x\n", u32);
byte actionCount = stream->readByte();
byte u35 = stream->readByte();
uint16 paletteId = stream->readUint16BE();
byte paletteSet = stream->readByte();
debugN(9, "CDToons palette id %04x, palette byte %02x\n",
paletteId, paletteSet);
byte u39 = stream->readByte();
uint16 u40 = stream->readUint16BE();
uint16 u42 = stream->readUint16BE();
debugN(5, "CDToons: unknown at 35 is %02x, unknowns at 39: %02x, %04x, %04x\n",
u35, u39, u40, u42);
Common::Array<CDToonsAction> actions;
for (uint i = 0; i < actionCount; i++) {
CDToonsAction action;
action.blockId = stream->readUint16BE();
action.rect = readRect(stream);
debugN(9, "CDToons action: render block %d at (%d, %d) to (%d, %d)\n",
action.blockId, action.rect.left, action.rect.top, action.rect.right, action.rect.bottom);
actions.push_back(action);
}
if (stream->pos() > blockOffset)
error("CDToons header ended at 0x%08x, but blocks should have started at 0x%08x",
stream->pos(), blockOffset);
if (stream->pos() != blockOffset)
error("CDToons had %d unknown bytes after header", blockOffset - stream->pos());
for (uint i = 0; i < blockCount; i++) {
uint16 blockId = stream->readUint16BE();
if (blockId >= 1200)
error("CDToons: block id %d was too high", blockId);
if (_blocks.contains(blockId))
error("CDToons: new block %d was already seen", blockId);
CDToonsBlock block;
block.flags = stream->readUint16BE();
// flag 1 = palette, flag 2 = data?
if (block.flags & 0x8000)
error("CDToons: block already processed?");
block.size = stream->readUint32BE();
if (block.size < 14)
error("CDToons: block size was %d, too small", block.size);
block.size -= 14;
block.startFrame = stream->readUint16BE();
block.endFrame = stream->readUint16BE();
block.unknown12 = stream->readUint16BE();
block.data = new byte[block.size];
stream->read(block.data, block.size);
debugN(9, "CDToons block id 0x%04x of size 0x%08x, flags %04x, from frame %d to %d, unknown at 12 is %04x\n",
blockId, block.size, block.flags, block.startFrame, block.endFrame, block.unknown12);
_blocks[blockId] = block;
}
byte xFrmBegin = 0, xFrmCount;
Common::Array<CDToonsDiff> diffs;
while (true) {
int32 nextPos = stream->pos();
uint32 tag = stream->readUint32BE();
uint32 size = stream->readUint32BE();
nextPos += size;
switch (tag) {
case MKID_BE('Diff'):
{
debugN(5, "CDToons: Diff\n");
uint16 count = stream->readUint16BE();
Common::Rect diffClipRect = readRect(stream);
debugN(9, "CDToons diffClipRect: (%d, %d) to (%d, %d)\n",
diffClipRect.left, diffClipRect.top, diffClipRect.right, diffClipRect.bottom);
debugN(5, "CDToons Diff: %d subentries\n", count);
for (uint i = 0; i < count; i++) {
CDToonsDiff diff;
diff.rect = readRect(stream);
diff.size = stream->readUint32BE();
if (diff.size < 20)
error("CDToons: Diff block size was %d, too small", diff.size);
uint16 diffWidth = stream->readUint16BE();
uint16 diffHeight = stream->readUint16BE();
uint16 unknown16 = stream->readUint16BE();
uint16 unknown18 = stream->readUint16BE();
diff.size -= 8;
if (diffWidth != diff.rect.width() || diffHeight != diff.rect.height())
error("CDToons: Diff sizes didn't match");
debugN(5, "CDToons Diff: size %d, frame from (%d, %d) to (%d, %d), unknowns %04x, %04x\n",
diff.size, diff.rect.left, diff.rect.top, diff.rect.right, diff.rect.bottom,
unknown16, unknown18);
diff.data = new byte[diff.size];
stream->read(diff.data, diff.size);
diffs.push_back(diff);
}
}
break;
case MKID_BE('XFrm'):
{
debugN(5, "CDToons: XFrm\n");
if (!(flags & 0x10))
error("CDToons: useless XFrm?");
if (xFrmBegin)
error("CDToons: duplicate XFrm");
xFrmBegin = stream->readByte();
xFrmCount = stream->readByte();
debugN(9, "CDToons XFrm: run %d actions from %d\n", xFrmCount, xFrmBegin - 1);
// TODO: don't ignore (if xFrmCount is non-zero)
Common::Rect dirtyRectXFrm = readRect(stream);
debugN(9, "CDToons XFrm dirtyRect: (%d, %d) to (%d, %d)\n",
dirtyRectXFrm.left, dirtyRectXFrm.top, dirtyRectXFrm.right, dirtyRectXFrm.bottom);
// always zero?
Common::Rect dirtyRect2XFrm = readRect(stream);
debugN(9, "CDToons XFrm dirtyRect2: (%d, %d) to (%d, %d)\n",
dirtyRect2XFrm.left, dirtyRect2XFrm.top, dirtyRect2XFrm.right, dirtyRect2XFrm.bottom);
}
break;
case MKID_BE('Mrks'):
debugN(5, "CDToons: Mrks\n");
if (!(flags & 0x2))
error("CDToons: useless Mrks?");
// TODO
warning("CDToons: encountered Mrks, not implemented yet");
break;
case MKID_BE('Scal'):
// TODO
warning("CDToons: encountered Scal, not implemented yet");
break;
case MKID_BE('WrMp'):
warning("CDToons: encountered WrMp, ignoring");
break;
case MKID_BE('FrtR'):
{
debugN(5, "CDToons: FrtR\n");
if (!(flags & 0x40))
error("CDToons: useless FrtR?");
uint16 count = stream->readUint16BE();
debugN(9, "CDToons FrtR: %d dirty rectangles\n", count);
for (uint i = 0; i < count; i++) {
Common::Rect dirtyRectFrtR = readRect(stream);
debugN(9, "CDToons FrtR dirtyRect: (%d, %d) to (%d, %d)\n",
dirtyRectFrtR.left, dirtyRectFrtR.top, dirtyRectFrtR.right, dirtyRectFrtR.bottom);
}
}
break;
case MKID_BE('BckR'):
{
debugN(5, "CDToons: BckR\n");
if (!(flags & 0x20))
error("CDToons: useless BckR?");
uint16 count = stream->readUint16BE();
debugN(9, "CDToons BckR: %d subentries\n", count);
for (uint i = 0; i < count; i++) {
Common::Rect dirtyRectBckR = readRect(stream);
debugN(9, "CDToons BckR dirtyRect: (%d, %d) to (%d, %d)\n",
dirtyRectBckR.left, dirtyRectBckR.top, dirtyRectBckR.right, dirtyRectBckR.bottom);
}
}
break;
default:
warning("Unknown CDToons tag '%s'", tag2str(tag));
}
if (stream->pos() > nextPos)
error("CDToons ran off the end of a block while reading it (at %d, next block at %d)",
stream->pos(), nextPos);
if (stream->pos() != nextPos) {
warning("CDToons had %d unknown bytes after block", nextPos - stream->pos());
stream->seek(nextPos);
}
if (stream->pos() == stream->size())
break;
}
for (uint i = 0; i < diffs.size(); i++) {
renderBlock(diffs[i].data, diffs[i].size, diffs[i].rect.left, diffs[i].rect.top, diffs[i].rect.width(), diffs[i].rect.height());
delete[] diffs[i].data;
}
if (!diffs.empty())
return _surface;
for (uint i = 0; i < actions.size(); i++) {
CDToonsAction &action = actions[i];
if (i == 0 && action.blockId == 0)
memset(_surface->pixels, backgroundColor, _surface->w * _surface->h);
if (!_blocks.contains(action.blockId))
continue;
if (!action.rect.right)
continue;
if (i == 0 && !diffs.empty())
continue;
CDToonsBlock &block = _blocks[action.blockId];
uint16 width = READ_BE_UINT16(block.data + 2);
uint16 height = READ_BE_UINT16(block.data);
renderBlock(block.data + 14, block.size - 14, action.rect.left, action.rect.top, width, height);
}
if (paletteId && _currentPaletteId != paletteId) {
if (!_blocks.contains(paletteId))
error("CDToons: no block for palette %04x", paletteId);
if (_blocks[paletteId].size != 2 * 3 * 256)
error("CDToons: palette %04x is wrong size (%d)", paletteId, _blocks[paletteId].size);
_currentPaletteId = paletteId;
if (!paletteSet)
setPalette(_blocks[paletteId].data);
}
return _surface;
}
void CDToonsDecoder::renderBlock(byte *data, uint dataSize, int destX, int destY, uint width, uint height) {
byte *currData = data;
byte *dataEnd = data + dataSize;
debugN(9, "CDToons renderBlock at (%d, %d), width %d, height %d\n",
destX, destY, width, height);
if (destX + width > _surface->w)
width = _surface->w - destX;
if (destY + height > _surface->h)
height = _surface->h - destY;
uint skip = 0;
if (destX < 0) {
skip = -destX;
if (width <= skip)
return;
width -= skip;
destX = 0;
}
for (uint y = 0; y < height; y++) {
if (destY + (int)y >= _surface->h)
break;
if (currData + 2 > dataEnd)
error("CDToons renderBlock overran whole data by %d bytes", (uint32)(currData - dataEnd));
uint16 lineSize = READ_BE_UINT16(currData);
currData += 2;
byte *nextLine = currData + lineSize;
if (nextLine > dataEnd)
error("CDToons renderBlock was going to overrun data by %d bytes (line size %d)",
(uint32)(nextLine - dataEnd), (uint32)(nextLine - currData));
if (destY + (int)y < 0) {
currData = nextLine;
continue;
}
byte *pixels = (byte *)_surface->getBasePtr(destX, destY + y);
int leftToSkip = skip;
uint x = 0;
bool done = false;
while (x < width && !done) {
int size = (uint)*currData;
currData++;
bool raw = !(size & 0x80);
size = (size & 0x7f) + 1;
if (leftToSkip) {
if (leftToSkip >= size) {
leftToSkip -= size;
if (raw)
currData += size;
else
currData++;
continue;
} else {
size -= leftToSkip;
if (raw)
currData += leftToSkip;
leftToSkip = 0;
}
}
if (x + size >= width) {
size = width - x;
done = true;
}
if (destX + (int)x + size >= (int)_surface->w) {
size = MIN<int>((int)_surface->w - destX - (int)x, width - x);
done = true;
}
if (size <= 0) {
size = 0;
done = true;
}
if (raw) {
memcpy(pixels + x, currData, size);
currData += size;
x += size;
} else {
byte color = *currData;
currData++;
if (color) {
memset(pixels + x, color, size);
}
x += size;
}
if (currData > nextLine) {
warning("CDToons renderBlock overran line by %d bytes", (uint32)(currData - nextLine));
return;
}
}
currData = nextLine;
}
}
void CDToonsDecoder::setPalette(byte *data) {
_dirtyPalette = true;
// A lovely QuickTime palette
for (uint i = 0; i < 256; i++) {
_palette[i * 3] = *data;
_palette[i * 3 + 1] = *(data + 2);
_palette[i * 3 + 2] = *(data + 4);
data += 6;
}
_palette[0] = _palette[1] = _palette[2] = 0;
}
} // End of namespace Graphics
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