void VideoDecoder::setRate(const Common::Rational &rate) {
if (!isVideoLoaded() || _playbackRate == rate)
return;
if (rate == 0) {
stop();
return;
} else if (rate != 1 && hasAudio()) {
warning("Cannot set custom rate in videos with audio");
return;
}
Common::Rational targetRate = rate;
if (rate < 0) {
// TODO: Implement support for this
warning("Cannot set custom rate to backwards");
targetRate = 1;
if (_playbackRate == targetRate)
return;
}
if (_playbackRate != 0)
_lastTimeChange = getTime();
_playbackRate = targetRate;
_startTime = g_system->getMillis();
// Adjust start time if we've seeked to something besides zero time
if (_lastTimeChange.totalNumberOfFrames() != 0)
_startTime -= (_lastTimeChange.msecs() / _playbackRate).toInt();
startAudio();
}
void MoviePlayer::handleNextFrame() {
if (!isVideoLoaded())
return;
VirtScreen *pvs = &_vm->_virtscr[kMainVirtScreen];
if (_flags & 2) {
uint8 *dstPtr = _vm->getResourceAddress(rtImage, _wizResNum);
assert(dstPtr);
uint8 *dst = _vm->findWrappedBlock(MKID_BE('WIZD'), dstPtr, 0, 0);
assert(dst);
copyFrameToBuffer(dst, kDstResource, 0, 0, _vm->_screenWidth * _vm->_bytesPerPixel);
} else if (_flags & 1) {
copyFrameToBuffer(pvs->getBackPixels(0, 0), kDstScreen, 0, 0, pvs->pitch);
Common::Rect imageRect(getWidth(), getHeight());
_vm->restoreBackgroundHE(imageRect);
} else {
copyFrameToBuffer(pvs->getPixels(0, 0), kDstScreen, 0, 0, pvs->pitch);
Common::Rect imageRect(getWidth(), getHeight());
_vm->markRectAsDirty(kMainVirtScreen, imageRect);
}
if (endOfVideo())
close();
}
bool VideoDecoder::isSeekable() const {
if (!isVideoLoaded())
return false;
for (TrackList::const_iterator it = _tracks.begin(); it != _tracks.end(); it++)
if (!(*it)->isSeekable())
return false;
return true;
}
bool QuickTimeDecoder::endOfVideo() const {
if (!isVideoLoaded())
return true;
for (uint32 i = 0; i < _handlers.size(); i++)
if (!_handlers[i]->endOfTrack())
return false;
return true;
}
bool VideoDecoder::addStreamFileTrack(const Common::String &baseName) {
// Only allow adding external tracks if a video is already loaded
if (!isVideoLoaded())
return false;
StreamFileAudioTrack *track = new StreamFileAudioTrack();
bool result = track->loadFromFile(baseName);
if (result)
addTrack(track);
return result;
}
int MoviePlayer::load(const char *filename, int flags, int image) {
if (isVideoLoaded())
close();
if (!loadFile(filename)) {
warning("Failed to load video file %s", filename);
return -1;
}
debug(1, "Playing video %s", filename);
if (flags & 2)
_vm->_wiz->createWizEmptyImage(image, 0, 0, getWidth(), getHeight());
_flags = flags;
_wizResNum = image;
return 0;
}
void NeverhoodSmackerDecoder::forceSeekToFrame(uint frame) {
if (!isVideoLoaded())
return;
if (frame >= getFrameCount())
error("Can't force Smacker seek to invalid frame %d", frame);
if (_header.audioInfo[0].hasAudio)
error("Can't force Smacker frame seek with audio");
if (!rewind())
error("Failed to rewind");
SmackerVideoTrack *videoTrack = (SmackerVideoTrack *)getTrack(0);
uint32 offset = 0;
for (uint32 i = 0; i < frame; i++) {
videoTrack->increaseCurFrame();
offset += _frameSizes[i] & ~3;
}
_fileStream->seek(offset, SEEK_CUR);
}
void VideoDecoder::setRate(const Common::Rational &rate) {
if (!isVideoLoaded() || _playbackRate == rate)
return;
if (rate == 0) {
stop();
return;
} else if (rate != 1 && hasAudio()) {
warning("Cannot set custom rate in videos with audio");
return;
}
Common::Rational targetRate = rate;
// Attempt to set the reverse
if (!setReverse(rate < 0)) {
assert(rate < 0); // We shouldn't fail for forward.
warning("Cannot set custom rate to backwards");
setReverse(false);
targetRate = 1;
if (_playbackRate == targetRate)
return;
}
if (_playbackRate != 0)
_lastTimeChange = getTime();
_playbackRate = targetRate;
_startTime = g_system->getMillis();
// Adjust start time if we've seeked to something besides zero time
if (_lastTimeChange != 0)
_startTime -= (_lastTimeChange.msecs() / _playbackRate).toInt();
startAudio();
}
int MoviePlayer::getImageNum() {
if (!isVideoLoaded())
return 0;
return _wizResNum;
}
bool AVIDecoder::isSeekable() const {
// Only videos with an index can seek
// Anyone else who wants to seek is crazy.
return isVideoLoaded() && !_indexEntries.empty();
}
bool VideoDecoder::endOfVideo() const {
return !isVideoLoaded() || (getCurFrame() >= (int32)getFrameCount() - 1);
}
