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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.
*
* $URL$
* $Id$
*
*/
#include "common/archive.h"
#include "common/debug.h"
#include "common/events.h"
#include "common/system.h"
#include "common/util.h"
#include "common/array.h"
#include "common/endian.h"
#include "graphics/video/video_player.h"
#include "graphics/surface.h"
namespace Graphics {
VideoDecoder::VideoDecoder() : _fileStream(0) {
_curFrameBlack = 0;
_curFrameWhite = 255;
}
VideoDecoder::~VideoDecoder() {
}
int VideoDecoder::getWidth() {
if (!_fileStream)
return 0;
return _videoInfo.width;
}
int VideoDecoder::getHeight() {
if (!_fileStream)
return 0;
return _videoInfo.height;
}
int32 VideoDecoder::getCurFrame() {
if (!_fileStream)
return -1;
return _videoInfo.currentFrame;
}
int32 VideoDecoder::getFrameCount() {
if (!_fileStream)
return 0;
return _videoInfo.frameCount;
}
int32 VideoDecoder::getFrameRate() {
if (!_fileStream)
return 0;
return _videoInfo.frameRate;
}
int32 VideoDecoder::getFrameDelay() {
if (!_fileStream)
return 0;
return _videoInfo.frameDelay;
}
int32 VideoDecoder::getAudioLag() {
if (!_fileStream)
return 0;
/* No audio.
Calculate the lag by how much time has gone by since the first frame
and how much time *should* have passed.
*/
int32 audioTime = (g_system->getMillis() - _videoInfo.startTime) * 100;
int32 videoTime = _videoInfo.currentFrame * getFrameDelay();
return videoTime - audioTime;
}
uint32 VideoDecoder::getFrameWaitTime() {
int32 waitTime = (getFrameDelay() + getAudioLag()) / 100;
if (waitTime < 0)
return 0;
return waitTime;
}
void VideoDecoder::copyFrameToBuffer(byte *dst, uint x, uint y, uint pitch) {
uint h = getHeight();
uint w = getWidth();
byte *src = _videoFrameBuffer;
dst += y * pitch + x;
do {
memcpy(dst, src, w);
dst += pitch;
src += w;
} while (--h);
}
void VideoDecoder::setPalette(byte *pal) {
byte videoPalette[256 * 4];
uint32 maxWeight = 0;
uint32 minWeight = 0xFFFFFFFF;
uint32 weight = 0;
byte r, g, b;
for (int i = 0; i < 256; i++) {
videoPalette[i * 4 + 0] = *pal++;
videoPalette[i * 4 + 1] = *pal++;
videoPalette[i * 4 + 2] = *pal++;
videoPalette[i * 4 + 3] = 0;
// Try and find the white and black colors for the current palette
r = videoPalette[i * 4 + 0];
g = videoPalette[i * 4 + 1];
b = videoPalette[i * 4 + 2];
weight = 3 * r * r + 6 * g * g + 2 * b * b;
if (weight >= maxWeight) {
_curFrameWhite = i;
maxWeight = weight;
}
if (weight <= minWeight) {
_curFrameBlack = i;
minWeight = i;
}
}
g_system->setPalette(videoPalette, 0, 256);
}
/*
* VideoPlayer
*/
void VideoPlayer::processVideoEvents(Common::List<Common::Event> &stopEvents) {
Common::Event curEvent;
Common::EventManager *eventMan = g_system->getEventManager();
// Process events, and skip video if esc is pressed
while (eventMan->pollEvent(curEvent)) {
if (curEvent.type == Common::EVENT_RTL || curEvent.type == Common::EVENT_QUIT) {
_skipVideo = true;
}
for (Common::List<Common::Event>::const_iterator iter = stopEvents.begin(); iter != stopEvents.end(); iter++) {
if (curEvent.type == iter->type) {
if (iter->type == Common::EVENT_KEYDOWN || iter->type == Common::EVENT_KEYUP) {
if (curEvent.kbd.keycode == iter->kbd.keycode) {
_skipVideo = true;
break;
}
} else {
_skipVideo = true;
break;
}
}
}
}
}
bool VideoPlayer::playVideo(Common::List<Common::Event> &stopEvents) {
_skipVideo = false;
debug(0, "Playing video");
g_system->fillScreen(0);
int frameX = (g_system->getWidth() - _decoder->getWidth()) / 2;
int frameY = (g_system->getHeight() - _decoder->getHeight()) / 2;
while (_decoder->getCurFrame() < _decoder->getFrameCount() && !_skipVideo) {
processVideoEvents(stopEvents);
uint32 startTime = 0;
_decoder->decodeNextFrame();
Graphics::Surface *screen = g_system->lockScreen();
_decoder->copyFrameToBuffer((byte *)screen->pixels, frameX, frameY, g_system->getWidth());
performPostProcessing((byte *)screen->pixels);
g_system->unlockScreen();
uint32 waitTime = _decoder->getFrameWaitTime();
if (!waitTime) {
warning("dropped frame %i", _decoder->getCurFrame());
continue;
}
// Update the screen
g_system->updateScreen();
startTime = g_system->getMillis();
// Wait before showing the next frame
while (g_system->getMillis() < startTime + waitTime && !_skipVideo) {
processVideoEvents(stopEvents);
g_system->delayMillis(10);
}
}
return !_skipVideo;
}
void VideoPlayer::performPostProcessing(byte *screen) {
}
} // End of namespace Graphics
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