tdesktop/Telegram/SourceFiles/lottie/lottie_frame_renderer.h

128 lines
3.1 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include "base/basic_types.h"
#include "base/weak_ptr.h"
#include "lottie/lottie_common.h"
#include <QImage>
#include <QSize>
#include <crl/crl_time.h>
#include <crl/crl_object_on_queue.h>
#include <limits>
namespace rlottie {
class Animation;
} // namespace rlottie
namespace Lottie {
inline constexpr auto kMaxFrameRate = 120;
inline constexpr auto kMaxSize = 3096;
inline constexpr auto kMaxFramesCount = 600;
class Player;
class Cache;
struct Frame {
QImage original;
crl::time position = kTimeUnknown;
crl::time displayed = kTimeUnknown;
crl::time display = kTimeUnknown;
FrameRequest request;
QImage prepared;
};
QImage PrepareFrameByRequest(
not_null<Frame*> frame,
bool useExistingPrepared);
class SharedState {
public:
SharedState(
std::unique_ptr<rlottie::Animation> animation,
const FrameRequest &request);
SharedState(
const QByteArray &content,
std::unique_ptr<rlottie::Animation> animation,
std::unique_ptr<Cache> cache,
const FrameRequest &request);
void start(not_null<Player*> owner, crl::time now);
[[nodiscard]] Information information() const;
[[nodiscard]] bool initialized() const;
[[nodiscard]] not_null<Frame*> frameForPaint();
[[nodiscard]] crl::time nextFrameDisplayTime() const;
crl::time markFrameDisplayed(crl::time now);
crl::time markFrameShown();
void renderFrame(QImage &image, const FrameRequest &request, int index);
[[nodiscard]] bool renderNextFrame(const FrameRequest &request);
~SharedState();
private:
void construct(const FrameRequest &request);
void calculateProperties();
bool isValid() const;
void init(QImage cover, const FrameRequest &request);
void renderNextFrame(
not_null<Frame*> frame,
const FrameRequest &request);
[[nodiscard]] not_null<Frame*> getFrame(int index);
[[nodiscard]] not_null<const Frame*> getFrame(int index) const;
[[nodiscard]] int counter() const;
QByteArray _content;
std::unique_ptr<rlottie::Animation> _animation;
static constexpr auto kCounterUninitialized = -1;
std::atomic<int> _counter = kCounterUninitialized;
static constexpr auto kFramesCount = 4;
std::array<Frame, kFramesCount> _frames;
base::weak_ptr<Player> _owner;
crl::time _started = kTimeUnknown;
crl::time _duration = kTimeUnknown;
int _frameIndex = 0;
int _framesCount = 0;
int _frameRate = 0;
QSize _size;
std::atomic<int> _accumulatedDelayMs = 0;
std::unique_ptr<Cache> _cache;
};
class FrameRendererObject;
class FrameRenderer final {
public:
static std::shared_ptr<FrameRenderer> Instance();
void append(std::unique_ptr<SharedState> entry);
void updateFrameRequest(
not_null<SharedState*> entry,
const FrameRequest &request);
void frameShown(not_null<SharedState*> entry);
void remove(not_null<SharedState*> state);
private:
using Implementation = FrameRendererObject;
crl::object_on_queue<Implementation> _wrapped;
};
} // namespace Lottie