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https://github.com/libretro/scummvm.git
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99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "groovie/groovie.h"
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#include "groovie/player.h"
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namespace Groovie {
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VideoPlayer::VideoPlayer(GroovieEngine *vm) :
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_vm(vm), _syst(vm->_system), _file(NULL), _audioStream(NULL) {
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}
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bool VideoPlayer::load(Common::SeekableReadStream *file, uint16 flags) {
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_file = file;
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_flags = flags;
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_audioStream = NULL;
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uint16 fps = loadInternal();
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if (fps != 0) {
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_millisBetweenFrames = 1000 / fps;
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_begunPlaying = false;
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return true;
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} else {
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_file = NULL;
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return false;
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}
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}
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bool VideoPlayer::playFrame() {
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bool end = true;
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// Process the next frame while the file is open
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if (_file) {
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end = playFrameInternal();
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}
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// The file has been completely processed
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if (end) {
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_file = NULL;
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// Wait for pending audio
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if (_audioStream) {
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if (_audioStream->endOfData()) {
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// Mark the audio stream as finished (no more data will be appended)
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_audioStream->finish();
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} else {
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// Don't end if there's still audio playing
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end = false;
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}
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}
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}
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return end;
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}
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void VideoPlayer::waitFrame() {
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uint32 currTime = _syst->getMillis();
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if (!_begunPlaying) {
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_begunPlaying = true;
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_lastFrameTime = currTime;
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} else {
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uint32 millisDiff = currTime - _lastFrameTime;
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if (millisDiff < _millisBetweenFrames) {
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debugC(7, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::Player: Delaying %d (currTime=%d, _lastFrameTime=%d, millisDiff=%d, _millisBetweenFrame=%d)",
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_millisBetweenFrames - millisDiff, currTime, _lastFrameTime, millisDiff, _millisBetweenFrames);
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_syst->delayMillis(_millisBetweenFrames - millisDiff);
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currTime = _syst->getMillis();
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debugC(7, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::Player: Finished delay at %d", currTime);
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}
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debugC(6, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::Player: Frame displayed at %d (%f FPS)", currTime, 1000.0 / (currTime - _lastFrameTime));
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_lastFrameTime = currTime;
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}
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}
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} // End of Groovie namespace
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