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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.
*
*/
#include "access/video.h"
#include "access/access.h"
namespace Access {
VideoPlayer::VideoPlayer(AccessEngine *vm) : Manager(vm) {
_vidSurface = nullptr;
_videoFrame = 0;
_soundFlag = false;
_soundFrame = 0;
_videoData = nullptr;
}
VideoPlayer::~VideoPlayer() {
closeVideo();
}
void VideoPlayer::setVideo(ASurface *vidSurface, const Common::Point &pt, FileIdent &videoFile, int rate) {
_vidSurface = vidSurface;
vidSurface->_orgX1 = pt.x;
vidSurface->_orgY1 = pt.y;
_vm->_timers[31]._timer = rate;
_vm->_timers[31]._initTm = rate;
// Open up video stream
_videoData = _vm->_files->loadFile(videoFile);
// Load in header
_header._frameCount = _videoData->_stream->readUint16LE();
_header._width = _videoData->_stream->readUint16LE();
_header._height = _videoData->_stream->readUint16LE();
_videoData->_stream->skip(1);
_header._flags = (VideoFlags)_videoData->_stream->readByte();
_startCoord = (byte *)vidSurface->getBasePtr(pt.x, pt.y);
_frameCount = _header._frameCount - 2;
_xCount = _header._width;
_scanCount = _header._height;
_videoFrame = 0;
getFrame();
if (_header._flags == VIDEOFLAG_BG) {
// Draw the background
for (int y = 0; y < _scanCount; ++y) {
byte *pDest = (byte *)vidSurface->getBasePtr(pt.x, pt.y + y);
_videoData->_stream->read(pDest, _xCount);
}
if (vidSurface == _vm->_screen)
_vm->_newRects.push_back(Common::Rect(pt.x, pt.y, pt.x + _xCount, pt.y + _scanCount));
getFrame();
}
_videoEnd = false;
}
void VideoPlayer::closeVideo() {
delete _videoData;
_videoData = nullptr;
}
void VideoPlayer::getFrame() {
_frameSize = _videoData->_stream->readUint16LE();
}
void VideoPlayer::playVideo() {
if (_vm->_timers[31]._flag)
return;
++_vm->_timers[31]._flag;
byte *pDest = _startCoord;
byte *pLine = _startCoord;
uint32 frameEnd = _videoData->_stream->pos() + _frameSize;
while ((uint32)_videoData->_stream->pos() < frameEnd) {
int count = _videoData->_stream->readByte();
if (count & 0x80) {
count &= 0x7f;
// Skip count number of pixels
// Loop across lines if necessary
while (count >= (pLine + _xCount - pDest)) {
count -= (pLine + _xCount - pDest);
pLine += _vidSurface->pitch;
pDest = pLine;
}
// Skip any remaining pixels in the new line
pDest += count;
} else {
// Read count number of pixels
// Load across lines if necessary
while (count >= (pLine + _xCount - pDest)) {
int lineCount = (pLine + _xCount - pDest);
_videoData->_stream->read(pDest, lineCount);
count -= lineCount;
pLine += _vidSurface->pitch;
pDest = pLine;
}
// Load remainder of pixels on line
if (count > 0) {
_videoData->_stream->read(pDest, count);
pDest += count;
}
}
}
getFrame();
if (++_videoFrame == _frameCount) {
closeVideo();
_videoEnd = true;
}
}
} // End of namespace Access
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