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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/debug.h"
#include "audio/audiostream.h"
#include "groovie/player.h"
#include "groovie/groovie.h"
namespace Groovie {
VideoPlayer::VideoPlayer(GroovieEngine *vm) :
_vm(vm), _syst(vm->_system), _file(NULL), _audioStream(NULL), _fps(0), _overrideSpeed(false), _flags(0),
_begunPlaying(false), _millisBetweenFrames(0), _lastFrameTime(0) {
}
bool VideoPlayer::load(Common::SeekableReadStream *file, uint16 flags) {
_file = file;
_flags = flags;
_overrideSpeed = false;
_audioStream = NULL;
_fps = loadInternal();
if (_fps != 0) {
setOverrideSpeed(_overrideSpeed);
_begunPlaying = false;
return true;
} else {
_file = NULL;
return false;
}
}
void VideoPlayer::setOverrideSpeed(bool isOverride) {
_overrideSpeed = isOverride;
if (_fps != 0) {
if (isOverride)
_millisBetweenFrames = 1000 / 26;
else
_millisBetweenFrames = 1000 / _fps;
}
}
bool VideoPlayer::playFrame() {
bool end = true;
// Process the next frame while the file is open
if (_file) {
end = playFrameInternal();
}
// The file has been completely processed
if (end) {
_file = NULL;
// Wait for pending audio
if (_audioStream) {
if (_audioStream->endOfData()) {
// Mark the audio stream as finished (no more data will be appended)
_audioStream->finish();
} else {
// Don't end if there's still audio playing
end = false;
}
}
}
return end;
}
void VideoPlayer::waitFrame() {
uint32 currTime = _syst->getMillis();
if (!_begunPlaying) {
_begunPlaying = true;
_lastFrameTime = currTime;
} else {
uint32 millisDiff = currTime - _lastFrameTime;
if (millisDiff < _millisBetweenFrames) {
debugC(7, kDebugVideo, "Groovie::Player: Delaying %d (currTime=%d, _lastFrameTime=%d, millisDiff=%d, _millisBetweenFrame=%d)",
_millisBetweenFrames - millisDiff, currTime, _lastFrameTime, millisDiff, _millisBetweenFrames);
_syst->delayMillis(_millisBetweenFrames - millisDiff);
currTime = _syst->getMillis();
debugC(7, kDebugVideo, "Groovie::Player: Finished delay at %d", currTime);
}
debugC(6, kDebugVideo, "Groovie::Player: Frame displayed at %d (%f FPS)", currTime, 1000.0 / (currTime - _lastFrameTime));
_lastFrameTime = currTime;
}
}
} // End of Groovie namespace
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