ipc_data_source.h revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7
15d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Copyright 2014 The Chromium Authors. All rights reserved. 25d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// found in the LICENSE file. 45d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 55d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#ifndef CHROME_UTILITY_MEDIA_GALLERIES_IPC_DATA_SOURCE_H_ 65d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#define CHROME_UTILITY_MEDIA_GALLERIES_IPC_DATA_SOURCE_H_ 75d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 85d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include <map> 95d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include <string> 105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "chrome/utility/utility_message_handler.h" 125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "media/base/data_source.h" 135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)namespace metadata { 155d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Provides the metadata parser with bytes from the browser process via IPC. 175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)class IPCDataSource: public media::DataSource, 185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) public chrome::UtilityMessageHandler { 195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) public: 205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) explicit IPCDataSource(int64 total_size); 215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual ~IPCDataSource(); 225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Implementation of DataSource. 245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void set_host(media::DataSourceHost* host) OVERRIDE; 255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void Stop(const base::Closure& callback) OVERRIDE; 265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void Read(int64 position, int size, uint8* data, 275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const ReadCB& read_cb) OVERRIDE; 285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual bool GetSize(int64* size_out) OVERRIDE; 295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual bool IsStreaming() OVERRIDE; 305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void SetBitrate(int bitrate) OVERRIDE; 315d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Implementation of UtilityMessageHandler. 335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) private: 365d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) struct Request { 375d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Request(); 385d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ~Request(); 395d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8* destination; 405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ReadCB callback; 415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) }; 425d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) void OnRequestBlobBytesFinished(int64 request_id, 445d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const std::string& bytes); 455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const int64 total_size_; 475d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) std::map<int64, Request> pending_requests_; 485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int64 next_request_id_; 495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)}; 505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} // namespace metadata 525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#endif // CHROME_UTILITY_MEDIA_GALLERIES_IPC_DATA_SOURCE_H_ 54