mirror of
https://github.com/libretro/scummvm.git
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253 lines
6.9 KiB
C++
253 lines
6.9 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/stream.h"
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#include "graphics/surface.h"
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#include "pink/cel_decoder.h"
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namespace Pink {
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bool CelDecoder::loadStream(Common::SeekableReadStream *stream) {
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close();
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/* uint32 frameSize = */ stream->readUint32LE();
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uint16 frameType = stream->readUint16LE();
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// Check FLC magic number
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if (frameType != 0xAF12) {
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warning("FlicDecoder::loadStream(): attempted to load non-FLC data (type = 0x%04X)", frameType);
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return false;
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}
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uint16 frameCount = stream->readUint16LE();
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uint16 width = stream->readUint16LE();
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uint16 height = stream->readUint16LE();
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uint16 colorDepth = stream->readUint16LE();
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if (colorDepth != 8) {
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warning("FlicDecoder::loadStream(): attempted to load an FLC with a palette of color depth %d. Only 8-bit color palettes are supported", colorDepth);
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return false;
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}
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addTrack(new CelVideoTrack(stream, frameCount, width, height));
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return true;
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}
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int32 CelDecoder::getX(){
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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if (!track)
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return -1;
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return track->getX();
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}
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int32 CelDecoder::getY() {
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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if (!track)
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return -1;
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return track->getY();
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}
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uint16 CelDecoder::getTransparentColourIndex() {
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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if (!track)
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return 0;
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return track->getTransparentColourIndex();
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}
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const Graphics::Surface *CelDecoder::getCurrentFrame() {
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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if (!track)
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return 0;
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return track->getCurrentFrame();
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}
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Common::Point CelDecoder::getCenter() {
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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if (!track)
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return {0,0};
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return track->getCenter();
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}
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Common::Rect &CelDecoder::getRectangle() {
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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return track->getRect();
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}
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void CelDecoder::setX(int32 x) {
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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track->setX(x);
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}
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void CelDecoder::setY(int32 y) {
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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track->setY(y);
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}
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void CelDecoder::skipFrame() {
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CelVideoTrack *track = (CelVideoTrack*) getTrack(0);
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track->skipFrame();
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}
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CelDecoder::CelVideoTrack::CelVideoTrack(Common::SeekableReadStream *stream, uint16 frameCount, uint16 width, uint16 height, bool skipHeader)
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: FlicVideoTrack(stream, frameCount, width, height, 1), _center(0,0), _transparentColourIndex(0){
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readHeader();
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}
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#define PREFIX_TYPE 0xF100
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#define CEL_DATA 3
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void CelDecoder::CelVideoTrack::readPrefixChunk() {
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_fileStream->seek(0x80);
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uint32 chunkSize = _fileStream->readUint32LE();
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uint16 chunkType = _fileStream->readUint16LE();
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if (chunkType != PREFIX_TYPE)
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return;
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uint32 offset = 6;
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uint32 subchunkSize = _fileStream->readUint32LE();
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uint16 subchunkType = _fileStream->readUint16LE();
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switch (subchunkType) {
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case CEL_DATA:
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_fileStream->readUint16LE();
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_center.x = _fileStream->readUint16LE();
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_center.y = _fileStream->readUint16LE();
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break;
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default:
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error("Unknown subchunk type");
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_fileStream->skip(subchunkSize - 6);
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break;
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}
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_rect = Common::Rect::center(_center.x, _center.y, _surface->w, _surface->h);
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}
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void CelDecoder::CelVideoTrack::readHeader() {
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_fileStream->readUint16LE();
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_frameDelay = _startFrameDelay = _fileStream->readUint32LE();
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_fileStream->seek(80);
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_offsetFrame1 = _fileStream->readUint32LE();
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_offsetFrame2 = _fileStream->readUint32LE();
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if (_offsetFrame1 > 0x80) {
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readPrefixChunk();
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}
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_fileStream->seek(_offsetFrame1);
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}
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int32 CelDecoder::CelVideoTrack::getX() const {
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return (_center.x - getWidth() / 2) < 0 ? 0 : _center.x - getWidth() / 2;
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}
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int32 CelDecoder::CelVideoTrack::getY() const {
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return (_center.y - getHeight() / 2) < 0 ? 0 : _center.y - getHeight() / 2;
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}
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uint16 CelDecoder::CelVideoTrack::getTransparentColourIndex() {
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return _transparentColourIndex;
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}
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const Graphics::Surface *CelDecoder::CelVideoTrack::getCurrentFrame() {
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return _surface;
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}
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Common::Point CelDecoder::CelVideoTrack::getCenter() {
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return _center;
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}
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Common::Rect &CelDecoder::CelVideoTrack::getRect() {
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return _rect;
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}
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#define FRAME_TYPE 0xF1FA
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void CelDecoder::CelVideoTrack::skipFrame() {
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// Read chunk
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/*uint32 frameSize = */ _fileStream->readUint32LE();
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uint16 frameType = _fileStream->readUint16LE();
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switch (frameType) {
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case FRAME_TYPE:
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handleFrame();
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break;
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default:
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error("FlicDecoder::decodeFrame(): unknown main chunk type (type = 0x%02X)", frameType);
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break;
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}
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_curFrame++;
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//_nextFrameStartTime += _frameDelay;
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if (_atRingFrame) {
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// If we decoded the ring frame, seek to the second frame
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_atRingFrame = false;
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_fileStream->seek(_offsetFrame2);
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}
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if (_curFrame == 0)
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_transparentColourIndex = *(byte*)_surface->getBasePtr(0,0);
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}
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const Graphics::Surface *CelDecoder::CelVideoTrack::decodeNextFrame() {
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// Read chunk
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/*uint32 frameSize = */ _fileStream->readUint32LE();
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uint16 frameType = _fileStream->readUint16LE();
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switch (frameType) {
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case FRAME_TYPE:
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handleFrame();
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break;
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default:
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error("FlicDecoder::decodeFrame(): unknown main chunk type (type = 0x%02X)", frameType);
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break;
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}
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_curFrame++;
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_nextFrameStartTime += _frameDelay;
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if (_atRingFrame) {
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// If we decoded the ring frame, seek to the second frame
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_atRingFrame = false;
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_fileStream->seek(_offsetFrame2);
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}
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if (_curFrame == 0)
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_transparentColourIndex = *(byte*)_surface->getBasePtr(0,0);
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return _surface;
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}
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void CelDecoder::CelVideoTrack::setX(int32 x) {
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_center.x = x ;//+ getWidth() / 2;
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}
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void CelDecoder::CelVideoTrack::setY(int32 y) {
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_center.y = y;//+ getHeight() / 2;
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}
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} // End of namepsace Pink
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