tdesktop/Telegram/SourceFiles/data/data_cloud_file.cpp at dev · dmitry/tdesktop · GitHub

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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

#include "data/data_cloud_file.h"

#include "data/data_file_origin.h"

#include "data/data_session.h"

#include "storage/cache/storage_cache_database.h"

#include "storage/file_download.h"

#include "ui/image/image.h"

#include "main/main_session.h"

namespace Data {

CloudFile::~CloudFile() {

// Destroy loader with still alive CloudFile with already zero '.loader'.

// Otherwise in ~FileLoader it tries to clear file.loader and crashes.

base::take(loader);

}

void CloudFile::clear() {

location = {};

base::take(loader);

byteSize = 0;

progressivePartSize = 0;

flags = {};

}

CloudImage::CloudImage() = default;

CloudImage::CloudImage(

not_null<Main::Session*> session,

const ImageWithLocation &data) {

update(session, data);

}

void CloudImage::set(

not_null<Main::Session*> session,

const ImageWithLocation &data) {

const auto &was = _file.location.file().data;

const auto &now = data.location.file().data;

if (!data.location.valid()) {

_file.flags |= CloudFile::Flag::Cancelled;

_file.loader = nullptr;

_file.location = ImageLocation();

_file.byteSize = 0;

_file.flags = CloudFile::Flag();

_view = std::weak_ptr<QImage>();

} else if (was != now

&& (!v::is<InMemoryLocation>(was) || v::is<InMemoryLocation>(now))) {

_file.location = ImageLocation();

_view = std::weak_ptr<QImage>();

}

UpdateCloudFile(

_file,

data,

session->data().cache(),

kImageCacheTag,

[=](FileOrigin origin) { load(session, origin); },

[=](QImage preloaded, QByteArray) {

setToActive(session, std::move(preloaded));

});

}

void CloudImage::update(

not_null<Main::Session*> session,

const ImageWithLocation &data) {

UpdateCloudFile(

_file,

data,

session->data().cache(),

kImageCacheTag,

[=](FileOrigin origin) { load(session, origin); },

[=](QImage preloaded, QByteArray) {

setToActive(session, std::move(preloaded));

});

}

bool CloudImage::empty() const {

return !_file.location.valid();

}

bool CloudImage::loading() const {

return (_file.loader != nullptr);

}

bool CloudImage::failed() const {

return (_file.flags & CloudFile::Flag::Failed);

}

bool CloudImage::loadedOnce() const {

return (_file.flags & CloudFile::Flag::Loaded);

}

void CloudImage::load(not_null<Main::Session*> session, FileOrigin origin) {

const auto autoLoading = false;

const auto finalCheck = [=] {

if (const auto active = activeView()) {

return active->isNull();

} else if (_file.flags & CloudFile::Flag::Loaded) {

return false;

}

return !(_file.flags & CloudFile::Flag::Loaded);

};

const auto done = [=](QImage result, QByteArray) {

setToActive(session, std::move(result));

};

LoadCloudFile(

session,

_file,

origin,

LoadFromCloudOrLocal,

autoLoading,

kImageCacheTag,

finalCheck,

done);

}

const ImageLocation &CloudImage::location() const {

return _file.location;

}

int CloudImage::byteSize() const {

return _file.byteSize;

}

std::shared_ptr<QImage> CloudImage::createView() {

if (auto active = activeView()) {

return active;

}

auto view = std::make_shared<QImage>();

_view = view;

return view;

}

std::shared_ptr<QImage> CloudImage::activeView() const {

return _view.lock();

}

bool CloudImage::isCurrentView(const std::shared_ptr<QImage> &view) const {

if (!view) {

return empty();

}

return !view.owner_before(_view) && !_view.owner_before(view);

}

void CloudImage::setToActive(

not_null<Main::Session*> session,

QImage image) {

if (const auto view = activeView()) {

*view = image.isNull()

? Image::Empty()->original()

: std::move(image);

session->notifyDownloaderTaskFinished();

}

void UpdateCloudFile(

CloudFile &file,

const ImageWithLocation &data,

Storage::Cache::Database &cache,

uint8 cacheTag,

Fn<void(FileOrigin)> restartLoader,

Fn<void(QImage, QByteArray)> usePreloaded) {

if (!data.location.valid()) {

if (data.progressivePartSize && !file.location.valid()) {

file.progressivePartSize = data.progressivePartSize;

}

if (data.location.width()

&& data.location.height()

&& !file.location.valid()

&& !file.location.width()) {

file.location = data.location;

}

return;

}

const auto needStickerThumbnailUpdate = [&] {

const auto was = std::get_if<StorageFileLocation>(

&file.location.file().data);

const auto now = std::get_if<StorageFileLocation>(

&data.location.file().data);

using Type = StorageFileLocation::Type;

if (!was || !now || was->type() != Type::StickerSetThumb) {

return false;

}

return now->valid()

&& (now->type() != Type::StickerSetThumb

|| now->cacheKey() != was->cacheKey());

};

const auto update = !file.location.valid()

|| (data.location.file().cacheKey()

&& (!file.location.file().cacheKey()

|| (file.location.width() < data.location.width())

|| (file.location.height() < data.location.height())

|| needStickerThumbnailUpdate()));

if (!update) {

return;

}

auto cacheBytes = !data.bytes.isEmpty()

? data.bytes

: v::is<InMemoryLocation>(file.location.file().data)

? v::get<InMemoryLocation>(file.location.file().data).bytes

: QByteArray();

if (!cacheBytes.isEmpty()) {

if (const auto cacheKey = data.location.file().cacheKey()) {

cache.putIfEmpty(

cacheKey,

Storage::Cache::Database::TaggedValue(

std::move(cacheBytes),

cacheTag));

}

file.location = data.location;

file.byteSize = data.bytesCount;

if (!data.preloaded.isNull()) {

file.loader = nullptr;

if (usePreloaded) {

usePreloaded(data.preloaded, data.bytes);

}

} else if (file.loader) {

const auto origin = base::take(file.loader)->fileOrigin();

restartLoader(origin);

} else if (file.flags & CloudFile::Flag::Failed) {

file.flags &= ~CloudFile::Flag::Failed;

}

void LoadCloudFile(

not_null<Main::Session*> session,

CloudFile &file,

FileOrigin origin,

LoadFromCloudSetting fromCloud,

bool autoLoading,

uint8 cacheTag,

Fn<bool()> finalCheck,

Fn<void(CloudFile&)> done,

Fn<void(bool)> fail,

Fn<void()> progress,

int downloadFrontPartSize = 0) {

const auto loadSize = downloadFrontPartSize

? std::min(downloadFrontPartSize, file.byteSize)

: file.byteSize;

if (file.loader) {

if (fromCloud == LoadFromCloudOrLocal) {

file.loader->permitLoadFromCloud();

}

if (file.loader->loadSize() < loadSize) {

file.loader->increaseLoadSize(loadSize, autoLoading);

}

return;

} else if ((file.flags & CloudFile::Flag::Failed)

|| !file.location.valid()

|| (finalCheck && !finalCheck())) {

return;

}

file.flags &= ~CloudFile::Flag::Cancelled;

file.loader = CreateFileLoader(

session,

file.location.file(),

origin,

QString(),

loadSize,

file.byteSize,

UnknownFileLocation,

LoadToCacheAsWell,

fromCloud,

autoLoading,

cacheTag);

const auto finish = [done](CloudFile &file) {

if (!file.loader || file.loader->cancelled()) {

file.flags |= CloudFile::Flag::Cancelled;

} else {

file.flags |= CloudFile::Flag::Loaded;

done(file);

}

// NB! file.loader may be in ~FileLoader() already.

if (const auto loader = base::take(file.loader)) {

if ((file.flags & CloudFile::Flag::Cancelled)

&& !loader->cancelled()) {

loader->cancel();

}

};

file.loader->updates(

) | rpl::on_next_error_done([=] {

if (const auto onstack = progress) {

onstack();

}

}, [=, &file](FileLoader::Error error) {

finish(file);

file.flags |= CloudFile::Flag::Failed;

if (const auto onstack = fail) {

onstack(error.started);

}

}, [=, &file] {

finish(file);

}, file.loader->lifetime());

file.loader->start();

}

void LoadCloudFile(

not_null<Main::Session*> session,

CloudFile &file,

FileOrigin origin,

LoadFromCloudSetting fromCloud,

bool autoLoading,

uint8 cacheTag,

Fn<bool()> finalCheck,

Fn<void(QImage, QByteArray)> done,

Fn<void(bool)> fail,

Fn<void()> progress,

int downloadFrontPartSize) {

const auto callback = [=](CloudFile &file) {

if (auto read = file.loader->imageData(); read.isNull()) {

file.flags |= CloudFile::Flag::Failed;

if (const auto onstack = fail) {

onstack(true);

}

} else if (const auto onstack = done) {

onstack(std::move(read), file.loader->bytes());

}

};

LoadCloudFile(

session,

file,

origin,

fromCloud,

autoLoading,

cacheTag,

finalCheck,

callback,

std::move(fail),

std::move(progress),

downloadFrontPartSize);

}

void LoadCloudFile(

not_null<Main::Session*> session,

CloudFile &file,

FileOrigin origin,

LoadFromCloudSetting fromCloud,

bool autoLoading,

uint8 cacheTag,

Fn<bool()> finalCheck,

Fn<void(QByteArray)> done,

Fn<void(bool)> fail,

Fn<void()> progress) {

const auto callback = [=](CloudFile &file) {

if (auto bytes = file.loader->bytes(); bytes.isEmpty()) {

file.flags |= CloudFile::Flag::Failed;

if (const auto onstack = fail) {

onstack(true);

}

} else if (const auto onstack = done) {

onstack(std::move(bytes));

}

};

LoadCloudFile(

session,

file,

origin,

fromCloud,

autoLoading,

cacheTag,

finalCheck,

callback,

std::move(fail),

std::move(progress));

}

} // namespace Data

tdesktop/Telegram/SourceFiles/data/data_cloud_file.cpp at dev · dmitry/tdesktop · GitHub

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