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// Copyright 2014 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.
#ifndef CHROME_UTILITY_MEDIA_GALLERIES_IPC_DATA_SOURCE_H_
#define CHROME_UTILITY_MEDIA_GALLERIES_IPC_DATA_SOURCE_H_
#include <map>
#include <string>
#include "chrome/utility/utility_message_handler.h"
#include "media/base/data_source.h"
namespace metadata {
// Provides the metadata parser with bytes from the browser process via IPC.
class IPCDataSource: public media::DataSource,
public chrome::UtilityMessageHandler {
public:
explicit IPCDataSource(int64 total_size);
virtual ~IPCDataSource();
// Implementation of DataSource.
virtual void set_host(media::DataSourceHost* host) OVERRIDE;
virtual void Stop(const base::Closure& callback) OVERRIDE;
virtual void Read(int64 position, int size, uint8* data,
const ReadCB& read_cb) OVERRIDE;
virtual bool GetSize(int64* size_out) OVERRIDE;
virtual bool IsStreaming() OVERRIDE;
virtual void SetBitrate(int bitrate) OVERRIDE;
// Implementation of UtilityMessageHandler.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
private:
struct Request {
Request();
~Request();
uint8* destination;
ReadCB callback;
};
void OnRequestBlobBytesFinished(int64 request_id,
const std::string& bytes);
const int64 total_size_;
std::map<int64, Request> pending_requests_;
int64 next_request_id_;
};
} // namespace metadata
#endif // CHROME_UTILITY_MEDIA_GALLERIES_IPC_DATA_SOURCE_H_
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