C++ (Cpp) _callbackLoopEnded Examples

Example #1

File: vqa_player.cpp Project: dreammaster/scummvm

int VQAPlayer::update(bool forceDraw, bool advanceFrame, bool useTime, Graphics::Surface *customSurface) {
	uint32 now = 60 * _vm->_system->getMillis();
	int result = -1;

	if (_frameNext < 0) {
		_frameNext = _frameBegin;
	}

	if ((_repeatsCount > 0 || _repeatsCount == -1) && (_frameNext > _frameEnd)) {
		int loopEndQueued = _frameEndQueued;
		if (_frameEndQueued != -1) {
			_frameEnd = _frameEndQueued;
			_frameEndQueued = -1;
		}
		if (_frameNext != _frameBegin) {
			_frameNext = _frameBegin;
		}

		if (loopEndQueued == -1) {
			if (_repeatsCount != -1) {
				_repeatsCount--;
			}
			//callback for repeat, it is not used in the blade runner
		} else {
			_repeatsCount = _repeatsCountQueued;
			_repeatsCountQueued = -1;

			if (_callbackLoopEnded != nullptr) {
				_callbackLoopEnded(_callbackData, 0, _loop);
			}
		}

		result = -1;
	} else if (_frameNext > _frameEnd) {
		result = -3;
	} else if (useTime && (now < _frameNextTime)) {
		result = -1;
	} else if (advanceFrame) {
		_frame = _frameNext;
		_decoder.readFrame(_frameNext, kVQAReadVideo);
		_decoder.decodeVideoFrame(customSurface != nullptr ? customSurface : _surface, _frameNext);

		int audioPreloadFrames = 14;

		if (_hasAudio) {
			if (!_audioStarted) {
				for (int i = 0; i < audioPreloadFrames; i++) {
					if (_frameNext + i < _frameEnd) {
						_decoder.readFrame(_frameNext + i, kVQAReadAudio);
						queueAudioFrame(_decoder.decodeAudioFrame());
					}
				}
				_vm->_mixer->playStream(Audio::Mixer::kPlainSoundType, &_soundHandle, _audioStream);
				_audioStarted = true;
			}
			if (_frameNext + audioPreloadFrames < _frameEnd) {
				_decoder.readFrame(_frameNext + audioPreloadFrames, kVQAReadAudio);
				queueAudioFrame(_decoder.decodeAudioFrame());
			}
		}
		if (useTime) {
			if (_frameNextTime == 0) {
				_frameNextTime = now + 60000 / 15;
			}
			else {
				_frameNextTime += 60000 / 15;
			}
		}
		_frameNext++;
		result = _frame;
	}

	if (result < 0 && forceDraw && _frame != -1) {
		_decoder.decodeVideoFrame(customSurface != nullptr ? customSurface : _surface, _frame, true);
		result = _frame;
	}
	return result;
}

Example #2

File: vqa_player.cpp Project: DrItanium/scummvm

int VQAPlayer::update() {
	uint32 now = 60 * _vm->_system->getMillis();

	if (_frameNext < 0) {
		_frameNext = _frameBegin;
	}

	if ((_repeatsCount > 0 || _repeatsCount == -1) && (_frameNext > _frameEnd)) {
		int loopEndQueued = _frameEndQueued;
		if (_frameEndQueued != -1) {
			_frameEnd = _frameEndQueued;
			_frameEndQueued = -1;
		}
		if (_frameNext != _frameBegin) {
			_frameNext = _frameBegin;
		}

		if (loopEndQueued == -1) {
			if (_repeatsCount != -1) {
				_repeatsCount--;
			}
			//callback for repeat, it is not used in the blade runner
		} else {
			_repeatsCount = _repeatsCountQueued;
			_repeatsCountQueued = -1;

			if (_callbackLoopEnded != nullptr) {
				_callbackLoopEnded(_callbackData, 0, _loop);
			}
		}
		_surface = nullptr;
		return -1;
	}

	if (_frameNext > _frameEnd) {
		return -3;
	}


//	TODO: preload audio in better way
	int audioPreloadFrames = 3;

	if (now >= _frameNextTime) {
		int frame = _frameNext;
		_decoder.readFrame(_frameNext, 0x2);
		_surface = _decoder.decodeVideoFrame();

		if (_hasAudio) {
			if (!_audioStarted) {
				for (int i = 0; i < audioPreloadFrames; i++) {
					if (_frameNext + i < _frameEnd) {
						_decoder.readFrame(_frameNext + i, 0x1);
						queueAudioFrame(_decoder.decodeAudioFrame());
					}
				}
				_vm->_mixer->playStream(Audio::Mixer::kPlainSoundType, &_soundHandle, _audioStream);
				_audioStarted = true;
			}
			if (_frameNext + audioPreloadFrames < _frameEnd) {
				_decoder.readFrame(_frameNext + audioPreloadFrames, 0x1);
				queueAudioFrame(_decoder.decodeAudioFrame());
			}
		}
		if (_frameNextTime == 0) {
			_frameNextTime = now + 60000 / 15;
		} else {
			_frameNextTime += 60000 / 15;
		}

		_frameNext++;
		return frame;
	}

	_surface = nullptr;
	return -1;
}