mirror of
https://github.com/libretro/scummvm.git
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197 lines
5.3 KiB
C++
197 lines
5.3 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 "access/video.h"
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#include "access/access.h"
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namespace Access {
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VideoPlayer::VideoPlayer(AccessEngine *vm) : Manager(vm) {
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_vidSurface = nullptr;
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_videoData = nullptr;
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_startCoord = nullptr;
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_frameCount = 0;
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_xCount = 0;
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_scanCount = 0;
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_frameSize = 0;
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_videoFrame = 0;
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_soundFlag = false;
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_soundFrame = 0;
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_videoEnd = false;
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_header._frameCount = 0;
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_header._width = _header._height = 0;
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_header._flags = VIDEOFLAG_NONE;
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}
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VideoPlayer::~VideoPlayer() {
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closeVideo();
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}
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void VideoPlayer::setVideo(BaseSurface *vidSurface, const Common::Point &pt, int rate) {
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_vidSurface = vidSurface;
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vidSurface->_orgX1 = pt.x;
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vidSurface->_orgY1 = pt.y;
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_vm->_timers[31]._timer = rate;
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_vm->_timers[31]._initTm = rate;
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// Load in header
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_header._frameCount = _videoData->_stream->readUint16LE();
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_header._width = _videoData->_stream->readUint16LE();
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_header._height = _videoData->_stream->readUint16LE();
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_videoData->_stream->skip(1);
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_header._flags = (VideoFlags)_videoData->_stream->readByte();
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_startCoord = (byte *)vidSurface->getBasePtr(pt.x, pt.y);
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_frameCount = _header._frameCount - 2;
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_xCount = _header._width;
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_scanCount = _header._height;
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_videoFrame = 0;
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_videoBounds = Common::Rect(pt.x, pt.y, pt.x + _header._width, pt.y + _header._height);
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getFrame();
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if (_header._flags == VIDEOFLAG_BG) {
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// Draw the background
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for (int y = 0; y < _scanCount; ++y) {
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byte *pDest = (byte *)vidSurface->getBasePtr(pt.x, pt.y + y);
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_videoData->_stream->read(pDest, _xCount);
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}
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if (vidSurface == _vm->_screen)
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_vm->_newRects.push_back(Common::Rect(pt.x, pt.y, pt.x + _xCount, pt.y + _scanCount));
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getFrame();
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}
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_videoEnd = false;
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}
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void VideoPlayer::setVideo(BaseSurface *vidSurface, const Common::Point &pt, const Common::Path &filename, int rate) {
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// Open up video stream
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_videoData = _vm->_files->loadFile(filename);
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setVideo(vidSurface, pt, rate);
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}
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void VideoPlayer::setVideo(BaseSurface *vidSurface, const Common::Point &pt, const FileIdent &videoFile, int rate) {
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// Open up video stream
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_videoData = _vm->_files->loadFile(videoFile);
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setVideo(vidSurface, pt, rate);
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}
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void VideoPlayer::closeVideo() {
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delete _videoData;
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_videoData = nullptr;
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}
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void VideoPlayer::getFrame() {
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_frameSize = _videoData->_stream->readUint16LE();
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}
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void VideoPlayer::playVideo() {
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if (_vm->_timers[31]._flag)
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return;
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++_vm->_timers[31]._flag;
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byte *pDest = _startCoord;
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byte *pLine = _startCoord;
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uint32 frameEnd = _videoData->_stream->pos() + _frameSize;
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while ((uint32)_videoData->_stream->pos() < frameEnd) {
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int count = _videoData->_stream->readByte();
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if (count & 0x80) {
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count &= 0x7f;
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// Skip count number of pixels
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// Loop across lines if necessary
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while (count >= (pLine + _xCount - pDest)) {
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count -= (pLine + _xCount - pDest);
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pLine += _vidSurface->pitch;
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pDest = pLine;
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}
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// Skip any remaining pixels in the new line
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pDest += count;
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} else {
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// Read count number of pixels
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// Load across lines if necessary
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while (count >= (pLine + _xCount - pDest)) {
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int lineCount = (pLine + _xCount - pDest);
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_videoData->_stream->read(pDest, lineCount);
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count -= lineCount;
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pLine += _vidSurface->pitch;
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pDest = pLine;
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}
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// Load remainder of pixels on line
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if (count > 0) {
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_videoData->_stream->read(pDest, count);
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pDest += count;
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}
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}
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}
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// If the video is playing on the screen surface, add a dirty rect
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if (_vidSurface == _vm->_screen)
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_vm->_screen->markAllDirty();
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getFrame();
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if (++_videoFrame == _frameCount) {
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closeVideo();
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_videoEnd = true;
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}
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}
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void VideoPlayer::copyVideo() {
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_vm->_player->calcPlayer();
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// Figure out the dirty rect area for the video frame
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Common::Rect r = Common::Rect(_vm->_vidX - _vm->_screen->_bufferStart.x,
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_vm->_vidY - _vm->_screen->_bufferStart.y,
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_vm->_vidX - _vm->_screen->_bufferStart.x + _header._width,
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_vm->_vidY - _vm->_screen->_bufferStart.y + _header._height);
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if (!_vm->_screen->clip(r))
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return;
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_vm->_newRects.push_back(r);
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int vh = _header._height;
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int vw = _header._width;
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int destIdx = _vm->_vidX - _vm->_screen->_bufferStart.x;
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int srcIdx = _vm->_screen->_leftSkip;
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for (int i = 0; i < _vm->_screen->_topSkip; i++)
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destIdx += 160;
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const byte *srcP = (const byte *)_vm->_vidBuf.getPixels() + srcIdx;
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byte *destP = (byte *)_vm->_buffer2.getPixels() + destIdx;
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for (int i = 0; i < vh; i++) {
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Common::copy(srcP, srcP + vw, destP);
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srcP += _vm->_vidBuf.pitch;
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destP += _vm->_buffer2.pitch;
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}
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}
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} // End of namespace Access
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