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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 "zvision/zvision.h"
#include "zvision/clock.h"
#include "zvision/render_manager.h"
#include "common/system.h"
#include "video/video_decoder.h"
#include "engines/util.h"
#include "graphics/surface.h"
namespace ZVision {
// Taken/modified from SCI
void scaleBuffer(const byte *src, byte *dst, uint32 srcWidth, uint32 srcHeight, byte bytesPerPixel, uint scaleAmount) {
assert(bytesPerPixel == 1 || bytesPerPixel == 2);
const uint32 newWidth = srcWidth * scaleAmount;
const uint32 pitch = newWidth * bytesPerPixel;
const byte *srcPtr = src;
if (bytesPerPixel == 1) {
for (uint32 y = 0; y < srcHeight; ++y) {
for (uint32 x = 0; x < srcWidth; ++x) {
const byte color = *srcPtr++;
for (uint i = 0; i < scaleAmount; ++i) {
dst[i] = color;
dst[pitch + i] = color;
}
dst += scaleAmount;
}
dst += pitch;
}
} else if (bytesPerPixel == 2) {
for (uint32 y = 0; y < srcHeight; ++y) {
for (uint32 x = 0; x < srcWidth; ++x) {
const byte color = *srcPtr++;
const byte color2 = *srcPtr++;
for (uint i = 0; i < scaleAmount; ++i) {
uint index = i *2;
dst[index] = color;
dst[index + 1] = color2;
dst[pitch + index] = color;
dst[pitch + index + 1] = color2;
}
dst += 2 * scaleAmount;
}
dst += pitch;
}
}
}
void ZVision::playVideo(Video::VideoDecoder &videoDecoder, const Common::Rect &destRect, bool skippable) {
byte bytesPerPixel = videoDecoder.getPixelFormat().bytesPerPixel;
uint16 origWidth = videoDecoder.getWidth();
uint16 origHeight = videoDecoder.getHeight();
uint scale = 1;
// If destRect is empty, no specific scaling was requested. However, we may choose to do scaling anyway
if (destRect.isEmpty()) {
// Most videos are very small. Therefore we do a simple 2x scale
if (origWidth * 2 <= 640 && origHeight * 2 <= 480) {
scale = 2;
}
} else {
// Assume bilinear scaling. AKA calculate the scale from just the width.
// Also assume that the scaling is in integral intervals. AKA no 1.5x scaling
// TODO: Test ^these^ assumptions
scale = destRect.width() / origWidth;
// TODO: Test if we need to support downscale.
}
uint16 pitch = origWidth * bytesPerPixel;
uint16 finalWidth = origWidth * scale;
uint16 finalHeight = origHeight * scale;
byte *scaledVideoFrameBuffer = 0;
if (scale != 1) {
scaledVideoFrameBuffer = new byte[finalWidth * finalHeight * bytesPerPixel];
}
uint16 x = ((WINDOW_WIDTH - finalWidth) / 2) + destRect.left;
uint16 y = ((WINDOW_HEIGHT - finalHeight) / 2) + destRect.top;
_clock.stop();
videoDecoder.start();
// Only continue while the video is still playing
while (!shouldQuit() && !videoDecoder.endOfVideo() && videoDecoder.isPlaying()) {
// Check for engine quit and video stop key presses
while (!videoDecoder.endOfVideo() && videoDecoder.isPlaying() && _eventMan->pollEvent(_event)) {
switch (_event.type) {
case Common::EVENT_KEYDOWN:
switch (_event.kbd.keycode) {
case Common::KEYCODE_q:
if (_event.kbd.hasFlags(Common::KBD_CTRL))
quitGame();
break;
case Common::KEYCODE_SPACE:
if (skippable) {
videoDecoder.stop();
}
break;
default:
break;
}
default:
break;
}
}
if (videoDecoder.needsUpdate()) {
const Graphics::Surface *frame = videoDecoder.decodeNextFrame();
if (frame) {
if (scale != 1) {
scaleBuffer((const byte *)frame->getPixels(), scaledVideoFrameBuffer, origWidth, origHeight, bytesPerPixel, scale);
_system->copyRectToScreen(scaledVideoFrameBuffer, pitch * 2, x, y, finalWidth, finalHeight);
} else {
_system->copyRectToScreen((const byte *)frame->getPixels(), pitch, x, y, finalWidth, finalHeight);
}
}
}
// Always update the screen so the mouse continues to render
_system->updateScreen();
_system->delayMillis(videoDecoder.getTimeToNextFrame());
}
_clock.start();
if (scale != 1) {
delete[] scaledVideoFrameBuffer;
}
}
} // End of namespace ZVision
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