317 lines
8.5 KiB
C++
317 lines
8.5 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "storage/storage_media_prepare.h"
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#include "platform/platform_file_utilities.h"
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#include "storage/localimageloader.h"
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#include "core/mime_type.h"
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namespace Storage {
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namespace {
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constexpr auto kMaxAlbumCount = 10;
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bool HasExtensionFrom(const QString &file, const QStringList &extensions) {
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for (const auto &extension : extensions) {
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const auto ext = file.right(extension.size());
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if (ext.compare(extension, Qt::CaseInsensitive) == 0) {
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return true;
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}
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}
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return false;
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}
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bool ValidPhotoForAlbum(const FileMediaInformation::Image &image) {
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if (image.animated) {
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return false;
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}
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const auto width = image.data.width();
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const auto height = image.data.height();
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return ValidateThumbDimensions(width, height);
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}
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bool ValidVideoForAlbum(const FileMediaInformation::Video &video) {
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const auto width = video.thumbnail.width();
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const auto height = video.thumbnail.height();
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return ValidateThumbDimensions(width, height);
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}
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QSize PrepareShownDimensions(const QImage &preview) {
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constexpr auto kMaxWidth = 1280;
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constexpr auto kMaxHeight = 1280;
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const auto result = preview.size();
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return (result.width() > kMaxWidth || result.height() > kMaxHeight)
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? result.scaled(kMaxWidth, kMaxHeight, Qt::KeepAspectRatio)
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: result;
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}
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bool PrepareAlbumMediaIsWaiting(
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QSemaphore &semaphore,
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PreparedFile &file,
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int previewWidth) {
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// TODO: Use some special thread queue, like a separate QThreadPool.
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crl::async([=, &semaphore, &file] {
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const auto guard = gsl::finally([&] { semaphore.release(); });
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if (!file.path.isEmpty()) {
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file.mime = Core::MimeTypeForFile(QFileInfo(file.path)).name();
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file.information = FileLoadTask::ReadMediaInformation(
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file.path,
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QByteArray(),
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file.mime);
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} else if (!file.content.isEmpty()) {
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file.mime = Core::MimeTypeForData(file.content).name();
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file.information = FileLoadTask::ReadMediaInformation(
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QString(),
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file.content,
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file.mime);
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} else {
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Assert(file.information != nullptr);
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}
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using Image = FileMediaInformation::Image;
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using Video = FileMediaInformation::Video;
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if (const auto image = base::get_if<Image>(
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&file.information->media)) {
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if (ValidPhotoForAlbum(*image)) {
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file.shownDimensions = PrepareShownDimensions(image->data);
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file.preview = Images::prepareOpaque(image->data.scaledToWidth(
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std::min(previewWidth, convertScale(image->data.width()))
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* cIntRetinaFactor(),
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Qt::SmoothTransformation));
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file.preview.setDevicePixelRatio(cRetinaFactor());
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file.type = PreparedFile::AlbumType::Photo;
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}
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} else if (const auto video = base::get_if<Video>(
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&file.information->media)) {
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if (ValidVideoForAlbum(*video)) {
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auto blurred = Images::prepareBlur(Images::prepareOpaque(video->thumbnail));
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file.shownDimensions = PrepareShownDimensions(video->thumbnail);
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file.preview = std::move(blurred).scaledToWidth(
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previewWidth * cIntRetinaFactor(),
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Qt::SmoothTransformation);
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file.preview.setDevicePixelRatio(cRetinaFactor());
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file.type = PreparedFile::AlbumType::Video;
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}
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}
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});
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return true;
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}
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void PrepareAlbum(PreparedList &result, int previewWidth) {
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const auto count = int(result.files.size());
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if (count > kMaxAlbumCount) {
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return;
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}
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result.albumIsPossible = (count > 1);
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auto waiting = 0;
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QSemaphore semaphore;
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for (auto &file : result.files) {
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if (PrepareAlbumMediaIsWaiting(semaphore, file, previewWidth)) {
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++waiting;
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}
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}
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if (waiting > 0) {
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semaphore.acquire(waiting);
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if (result.albumIsPossible) {
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const auto badIt = ranges::find(
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result.files,
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PreparedFile::AlbumType::None,
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[](const PreparedFile &file) { return file.type; });
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result.albumIsPossible = (badIt == result.files.end());
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}
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}
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}
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} // namespace
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bool ValidateThumbDimensions(int width, int height) {
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return (width > 0)
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&& (height > 0)
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&& (width < 20 * height)
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&& (height < 20 * width);
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}
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PreparedFile::PreparedFile(const QString &path) : path(path) {
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}
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PreparedFile::PreparedFile(PreparedFile &&other) = default;
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PreparedFile &PreparedFile::operator=(PreparedFile &&other) = default;
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PreparedFile::~PreparedFile() = default;
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MimeDataState ComputeMimeDataState(const QMimeData *data) {
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if (!data || data->hasFormat(qsl("application/x-td-forward"))) {
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return MimeDataState::None;
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}
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if (data->hasImage()) {
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return MimeDataState::Image;
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}
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const auto uriListFormat = qsl("text/uri-list");
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if (!data->hasFormat(uriListFormat)) {
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return MimeDataState::None;
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}
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const auto &urls = data->urls();
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if (urls.isEmpty()) {
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return MimeDataState::None;
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}
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const auto imageExtensions = cImgExtensions();
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auto files = QStringList();
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auto allAreSmallImages = true;
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for (const auto &url : urls) {
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if (!url.isLocalFile()) {
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return MimeDataState::None;
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}
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const auto file = Platform::File::UrlToLocal(url);
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const auto info = QFileInfo(file);
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if (info.isDir()) {
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return MimeDataState::None;
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}
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const auto filesize = info.size();
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if (filesize > App::kFileSizeLimit) {
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return MimeDataState::None;
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} else if (allAreSmallImages) {
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if (filesize > App::kImageSizeLimit) {
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allAreSmallImages = false;
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} else if (!HasExtensionFrom(file, imageExtensions)) {
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allAreSmallImages = false;
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}
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}
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}
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return allAreSmallImages
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? MimeDataState::PhotoFiles
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: MimeDataState::Files;
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}
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PreparedList PrepareMediaList(const QList<QUrl> &files, int previewWidth) {
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auto locals = QStringList();
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locals.reserve(files.size());
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for (const auto &url : files) {
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if (!url.isLocalFile()) {
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return {
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PreparedList::Error::NonLocalUrl,
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url.toDisplayString()
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};
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}
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locals.push_back(Platform::File::UrlToLocal(url));
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}
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return PrepareMediaList(locals, previewWidth);
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}
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PreparedList PrepareMediaList(const QStringList &files, int previewWidth) {
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auto result = PreparedList();
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result.files.reserve(files.size());
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const auto extensionsToCompress = cExtensionsForCompress();
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for (const auto &file : files) {
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const auto fileinfo = QFileInfo(file);
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const auto filesize = fileinfo.size();
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if (fileinfo.isDir()) {
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return {
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PreparedList::Error::Directory,
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file
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};
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} else if (filesize <= 0) {
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return {
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PreparedList::Error::EmptyFile,
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file
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};
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} else if (filesize > App::kFileSizeLimit) {
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return {
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PreparedList::Error::TooLargeFile,
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file
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};
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}
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const auto toCompress = HasExtensionFrom(file, extensionsToCompress);
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if (filesize > App::kImageSizeLimit || !toCompress) {
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result.allFilesForCompress = false;
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}
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result.files.emplace_back(file);
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}
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PrepareAlbum(result, previewWidth);
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return result;
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}
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PreparedList PrepareMediaFromImage(
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QImage &&image,
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QByteArray &&content,
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int previewWidth) {
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auto result = Storage::PreparedList();
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result.allFilesForCompress = ValidateThumbDimensions(
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image.width(),
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image.height());
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auto file = PreparedFile(QString());
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file.content = content;
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if (file.content.isEmpty()) {
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file.information = std::make_unique<FileMediaInformation>();
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const auto animated = false;
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FileLoadTask::FillImageInformation(
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std::move(image),
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animated,
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file.information);
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}
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result.files.push_back(std::move(file));
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PrepareAlbum(result, previewWidth);
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return result;
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}
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PreparedList PreparedList::Reordered(
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PreparedList &&list,
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std::vector<int> order) {
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Expects(list.error == PreparedList::Error::None);
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Expects(list.files.size() == order.size());
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auto result = PreparedList(list.error, list.errorData);
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result.albumIsPossible = list.albumIsPossible;
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result.allFilesForCompress = list.allFilesForCompress;
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result.files.reserve(list.files.size());
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for (auto index : order) {
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result.files.push_back(std::move(list.files[index]));
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}
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return result;
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}
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void PreparedList::mergeToEnd(PreparedList &&other) {
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if (error != Error::None) {
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return;
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}
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if (other.error != Error::None) {
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error = other.error;
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errorData = other.errorData;
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return;
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}
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allFilesForCompress = allFilesForCompress && other.allFilesForCompress;
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files.reserve(files.size() + other.files.size());
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for (auto &file : other.files) {
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files.push_back(std::move(file));
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}
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if (files.size() > 1 && files.size() <= kMaxAlbumCount) {
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const auto badIt = ranges::find(
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files,
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PreparedFile::AlbumType::None,
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[](const PreparedFile &file) { return file.type; });
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albumIsPossible = (badIt == files.end());
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} else {
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albumIsPossible = false;
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}
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}
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int MaxAlbumItems() {
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return kMaxAlbumCount;
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}
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} // namespace Storage
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