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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/ash/projector/screencast_manager.h"
#include <memory>
#include <vector>
#include "ash/webui/projector_app/public/cpp/projector_app_constants.h"
#include "ash/webui/projector_app/public/mojom/projector_types.mojom.h"
#include "base/check.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/task/bind_post_task.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/thread_pool.h"
#include "chrome/browser/ash/drive/drive_integration_service.h"
#include "chrome/browser/ash/extensions/file_manager/scoped_suppress_drive_notifications_for_path.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/ash/projector/projector_drivefs_provider.h"
#include "chrome/browser/ui/ash/projector/projector_utils.h"
#include "chrome/services/media_gallery_util/public/cpp/local_media_data_source_factory.h"
#include "chrome/services/media_gallery_util/public/cpp/safe_media_metadata_parser.h"
#include "chrome/services/media_gallery_util/public/mojom/media_parser.mojom.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
namespace ash {
namespace {
constexpr int kOneSecondInMillisecond = 1000;
void OnMediaMetadataParsed(
projector::mojom::VideoInfoPtr video,
ProjectorAppClient::OnGetVideoCallback callback,
const base::FilePath& video_path,
std::unique_ptr<SafeMediaMetadataParser> parser_keep_alive,
bool parse_success,
chrome::mojom::MediaMetadataPtr metadata,
std::unique_ptr<std::vector<metadata::AttachedImage>> attached_images) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
if (!parse_success || !metadata || !metadata->duration) {
// TODO(b/242748137): Add test to cover this error message.
std::move(callback).Run(
projector::mojom::GetVideoResult::NewErrorMessage(base::StringPrintf(
"Failed get media metadata or duration with video file id=%s",
video->file_id.c_str())));
return;
}
if (metadata->duration < 0) {
// The video file might be malformed if duration is -1.
std::move(callback).Run(projector::mojom::GetVideoResult::NewErrorMessage(
base::StringPrintf("Media might be malformed with video file id=%s",
video->file_id.c_str())));
return;
}
video->duration_millis = metadata->duration * kOneSecondInMillisecond;
// Launches app on UI thread when duration is valid.
// Even though the video file id is not a file path, we need to pass it to the
// launch event to match up with the original request.
base::FilePath video_id_as_path(video->file_id);
SendFilesToProjectorApp({video_id_as_path, video_path});
std::move(callback).Run(
projector::mojom::GetVideoResult::NewVideo(std::move(video)));
}
// Caller of this method requires a sequenced context. Gets video metadata for
// `video_path`, triggers the flow to set `duration_millis` in the given video
// object and triggers the callback. Should not be called on UI thread.
void GetVideoMetadata(const base::FilePath& video_path,
projector::mojom::VideoInfoPtr video,
ProjectorAppClient::OnGetVideoCallback callback) {
DCHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
std::optional<int64_t> size_in_byte = base::GetFileSize(video_path);
if (!size_in_byte.has_value()) {
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
std::move(callback),
projector::mojom::GetVideoResult::NewErrorMessage(
base::StringPrintf(
"Path does not exist or cannot read video size with "
"video file id=%s",
video->file_id.c_str()))));
return;
}
auto parser = std::make_unique<SafeMediaMetadataParser>(
size_in_byte.value(), kProjectorMediaMimeType,
/*get_attached_images=*/false,
std::make_unique<LocalMediaDataSourceFactory>(
video_path, base::SingleThreadTaskRunner::GetCurrentDefault()));
// Uses raw pointer since the `parser` is moved before calling Start().
SafeMediaMetadataParser* parser_ptr = parser.get();
parser_ptr->Start(base::BindPostTask(
content::GetUIThreadTaskRunner({}),
base::BindOnce(&OnMediaMetadataParsed, std::move(video),
std::move(callback), video_path, std::move(parser))));
}
} // namespace
// CreateSingleThreadTaskRunner for `video_metadata_task_runner` since
// LocalMediaDataSource requires a single thread context.
ScreencastManager::ScreencastManager()
: video_metadata_task_runner_(
base::ThreadPool::CreateSingleThreadTaskRunner({base::MayBlock()})) {}
ScreencastManager::~ScreencastManager() = default;
void ScreencastManager::GetVideo(
const std::string& video_file_id,
const std::optional<std::string>& resource_key,
ProjectorAppClient::OnGetVideoCallback callback) const {
// TODO(b/237089852): Handle the resource key once LocateFilesByItemIds()
// supports it.
drive::DriveIntegrationService* integration_service =
ProjectorDriveFsProvider::GetActiveDriveIntegrationService();
integration_service->LocateFilesByItemIds(
{video_file_id},
base::BindOnce(&ScreencastManager::OnVideoFilePathLocated,
weak_ptr_factory_.GetMutableWeakPtr(), video_file_id,
std::move(callback)));
}
void ScreencastManager::ResetScopeSuppressDriveNotifications() {
suppress_drive_notifications_for_path_.reset();
}
void ScreencastManager::OnVideoFilePathLocated(
const std::string& video_id,
ProjectorAppClient::OnGetVideoCallback callback,
std::optional<std::vector<drivefs::mojom::FilePathOrErrorPtr>> paths) {
if (!paths || paths.value().size() != 1u) {
std::move(callback).Run(projector::mojom::GetVideoResult::NewErrorMessage(
base::StringPrintf("Failed to find DriveFS path with video file id=%s",
video_id.c_str())));
return;
}
const auto& path_or_error = paths.value()[0];
if (path_or_error->is_error() || !path_or_error->is_path()) {
std::move(callback).Run(projector::mojom::GetVideoResult::NewErrorMessage(
base::StringPrintf("Failed to fetch DriveFS file with video file id=%s "
"and error code=%d",
video_id.c_str(), path_or_error->get_error())));
return;
}
const base::FilePath& relative_drivefs_path = path_or_error->get_path();
if (!relative_drivefs_path.MatchesExtension(kProjectorMediaFileExtension)) {
std::move(callback).Run(projector::mojom::GetVideoResult::NewErrorMessage(
base::StringPrintf("Failed to fetch video file with video file id=%s",
video_id.c_str())));
return;
}
const base::FilePath& mounted_path =
ProjectorDriveFsProvider::GetDriveFsMountPointPath();
const base::FilePath& video_path = mounted_path.Append(relative_drivefs_path);
// Suppresses the notification before calling GetVideoMetadata, which might
// trigger file syncing event that triggers Drive notifications.
suppress_drive_notifications_for_path_ =
std::make_unique<file_manager::ScopedSuppressDriveNotificationsForPath>(
ProfileManager::GetActiveUserProfile(),
base::FilePath("/").Append(relative_drivefs_path));
// Post task to:
// 1. Fill the video duration which also serves the purpose of video file
// validation.
// 2. If the duration is valid, trigger LaunchProjectorAppWithFiles().
// 3. Trigger `callback`.
auto video = projector::mojom::VideoInfo::New();
video->file_id = video_id;
video_metadata_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&GetVideoMetadata, video_path, std::move(video),
std::move(callback)));
}
} // namespace ash
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