blob: 8a1bff24a9f6c1d15b2f61dc81cb301717dd8200 [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "chrome/common/media_galleries/metadata_types.h"
#include "chrome/services/media_gallery_util/public/mojom/media_parser.mojom.h"
namespace base {
class Thread;
namespace media {
class DataSource;
// This class takes a MIME type and data source and parses its metadata. It
// handles audio, video, and images. It delegates its operations to FFMPEG.
// This class lives and operates on the utility thread of the utility process
// so we sandbox potentially dangerous operations on user-provided data.
class MediaMetadataParser {
typedef base::Callback<void(
chrome::mojom::MediaMetadataPtr metadata,
const std::vector<metadata::AttachedImage>& attached_images)>
MediaMetadataParser(std::unique_ptr<media::DataSource> source,
const std::string& mime_type,
bool get_attached_images);
// |callback| is called on same message loop.
void Start(const MetadataCallback& callback);
// Only accessed on |media_thread_| from this class.
std::unique_ptr<media::DataSource> source_;
const std::string mime_type_;
bool get_attached_images_;
// Thread that blocking media parsing operations run on while the main thread
// handles messages from the browser process.
// TODO(tommycli): Replace with a reference to a WorkerPool if we ever use
// this class in batch mode.
std::unique_ptr<base::Thread> media_thread_;