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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 "common/scummsys.h"
#include "common/system.h"
#include "video/video_decoder.h"
#include "engines/util.h"
#include "graphics/surface.h"
#include "zvision/render_manager.h"
namespace ZVision {
// Taken from SCI
void scale2x(const byte *src, byte *dst, int16 srcWidth, int16 srcHeight, byte bytesPerPixel) {
assert(bytesPerPixel == 1 || bytesPerPixel == 2);
const int newWidth = srcWidth * 2;
const int pitch = newWidth * bytesPerPixel;
const byte *srcPtr = src;
if (bytesPerPixel == 1) {
for (int y = 0; y < srcHeight; y++) {
for (int x = 0; x < srcWidth; x++) {
const byte color = *srcPtr++;
dst[0] = color;
dst[1] = color;
dst[newWidth] = color;
dst[newWidth + 1] = color;
dst += 2;
}
dst += newWidth;
}
} else if (bytesPerPixel == 2) {
for (int y = 0; y < srcHeight; y++) {
for (int x = 0; x < srcWidth; x++) {
const byte color = *srcPtr++;
const byte color2 = *srcPtr++;
dst[0] = color;
dst[1] = color2;
dst[2] = color;
dst[3] = color2;
dst[pitch] = color;
dst[pitch + 1] = color2;
dst[pitch + 2] = color;
dst[pitch + 3] = color2;
dst += 4;
}
dst += pitch;
}
}
}
void RenderManager::startVideo(Video::VideoDecoder *videoDecoder) {
if (!videoDecoder)
return;
_currentVideo = videoDecoder;
Common::List<Graphics::PixelFormat> formats;
formats.push_back(videoDecoder->getPixelFormat());
initGraphics(_width, _height, true, formats);
_scaledVideoFrameBuffer = new byte[_currentVideo->getWidth() * _currentVideo->getHeight() * _currentVideo->getPixelFormat().bytesPerPixel * 4];
_currentVideo->start();
// Load the first frame
continueVideo();
}
void RenderManager::continueVideo() {
byte bytesPerPixel = _currentVideo->getPixelFormat().bytesPerPixel;
uint16 origWidth = _currentVideo->getWidth();
uint16 origHeight = _currentVideo->getHeight();
uint16 pitch = origWidth * bytesPerPixel;
bool shouldBeScaled = (origWidth * 2 <= 640 && origHeight * 2 <= 480);
uint16 finalWidth = shouldBeScaled ? origWidth * 2 : origWidth;
uint16 finalHeight = shouldBeScaled ? origHeight * 2 : origHeight;
uint16 x = (_system->getWidth() - finalWidth) / 2;
uint16 y = (_system->getHeight() - finalHeight) / 2;
if (!_currentVideo->endOfVideo()) {
if (_currentVideo->needsUpdate()) {
const Graphics::Surface *frame = _currentVideo->decodeNextFrame();
if (frame) {
if (shouldBeScaled) {
scale2x((byte *)frame->pixels, _scaledVideoFrameBuffer, origWidth, origHeight, bytesPerPixel);
_system->copyRectToScreen(_scaledVideoFrameBuffer, pitch * 2, x, y, finalWidth, finalHeight);
} else {
_system->copyRectToScreen((byte *)frame->pixels, pitch, x, y, finalWidth, finalHeight);
}
_needsScreenUpdate = true;
}
}
} else {
cancelVideo();
}
}
void RenderManager::cancelVideo() {
initGraphics(_width, _height, true, &_pixelFormat);
delete _currentVideo;
_currentVideo = 0;
delete[] _scaledVideoFrameBuffer;
_scaledVideoFrameBuffer = 0;
}
} // End of namespace ZVision
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