Method Timeline

src/Timeline.cpp:34–77

Default Constructor for the timeline (which sets the canvas width and height)

// Default Constructor for the timeline (which sets the canvas width and height)
Timeline::Timeline(int width, int height, Fraction fps, int sample_rate, int channels, ChannelLayout channel_layout) :
		is_open(false), auto_map_clips(true), managed_cache(true), path(""), max_time(0.0), cache_epoch(0)
{
	// Create CrashHandler and Attach (incase of errors)
	CrashHandler::Instance();

	// Init viewport size (curve based, because it can be animated)
	viewport_scale = Keyframe(100.0);
	viewport_x = Keyframe(0.0);
	viewport_y = Keyframe(0.0);

	// Init background color
	color.red = Keyframe(0.0);
	color.green = Keyframe(0.0);
	color.blue = Keyframe(0.0);

	// Init FileInfo struct (clear all values)
	info.width = width;
	info.height = height;
	preview_width = info.width;
	preview_height = info.height;
	info.fps = fps;
	info.sample_rate = sample_rate;
	info.channels = channels;
	info.channel_layout = channel_layout;
	info.video_timebase = fps.Reciprocal();
	info.duration = 60 * 30; // 30 minute default duration
	info.has_audio = true;
	info.has_video = true;
	info.video_length = info.fps.ToFloat() * info.duration;
	info.display_ratio = openshot::Fraction(width, height);
	info.display_ratio.Reduce();
	info.pixel_ratio = openshot::Fraction(1, 1);
	info.acodec = "openshot::timeline";
	info.vcodec = "openshot::timeline";

	// Init max image size
	SetMaxSize(info.width, info.height);

	// Init cache
	final_cache = new CacheMemory();
	const int cache_frames = std::max(Settings::Instance()->CACHE_MIN_FRAMES, OPEN_MP_NUM_PROCESSORS * 4);
	final_cache->SetMaxBytesFromInfo(cache_frames, info.width, info.height, info.sample_rate, info.channels);
}

// Delegating constructor that copies parameters from a provided ReaderInfo
Timeline::Timeline(const ReaderInfo info) : Timeline::Timeline(