C++ (Cpp) AVIVideoTrack::decodeNextFrame示例

示例#1

文件： avi_decoder.cpp 项目： Tkachov/scummvm

void AVIDecoder::checkTruemotion1() {
	// If we got here from loadStream(), we know the track is valid
	assert(!_videoTracks.empty());

	TrackStatus &status = _videoTracks[0];
	AVIVideoTrack *track = (AVIVideoTrack *)status.track;

	// Ignore non-truemotion tracks
	if (!track->isTruemotion1())
		return;

	// Read the next video packet
	handleNextPacket(status);

	const Graphics::Surface *frame = track->decodeNextFrame();
	if (!frame) {
		rewind();
		return;
	}

	// Fill in the width/height based on the frame's width/height
	_header.width = frame->w;
	_header.height = frame->h;
	track->forceDimensions(frame->w, frame->h);

	// Rewind us back to the beginning
	rewind();
}

示例#2

文件： avi_decoder.cpp 项目： AReim1982/scummvm

const Graphics::Surface *AVIDecoder::decodeNextTransparency() {
	if (!_transparencyTrack.track)
		return nullptr;

	AVIVideoTrack *track = static_cast<AVIVideoTrack *>(_transparencyTrack.track);
	return track->decodeNextFrame();
}