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// Copyright (c) 2009 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.
// An extremely simple implementation of DataSource that downloads the entire
// media resource into memory before signaling that initialization has finished.
// Primarily used to test <audio> and <video> with buffering/caching removed
// from the equation.
#ifndef WEBKIT_GLUE_MEDIA_SIMPLE_DATA_SOURCE_H_
#define WEBKIT_GLUE_MEDIA_SIMPLE_DATA_SOURCE_H_
#include "base/message_loop.h"
#include "base/scoped_ptr.h"
#include "media/base/factory.h"
#include "media/base/filters.h"
#include "webkit/glue/resource_loader_bridge.h"
class MessageLoop;
class WebMediaPlayerDelegateImpl;
namespace webkit_glue {
class SimpleDataSource : public media::DataSource,
public webkit_glue::ResourceLoaderBridge::Peer {
public:
static media::FilterFactory* CreateFactory(MessageLoop* message_loop,
int32 routing_id) {
return new media::FilterFactoryImpl2<SimpleDataSource,
MessageLoop*,
int32>(message_loop, routing_id);
}
// MediaFilter implementation.
virtual void Stop();
// DataSource implementation.
virtual bool Initialize(const std::string& url);
virtual const media::MediaFormat& media_format();
virtual size_t Read(uint8* data, size_t size);
virtual bool GetPosition(int64* position_out);
virtual bool SetPosition(int64 position);
virtual bool GetSize(int64* size_out);
virtual bool IsSeekable();
// webkit_glue::ResourceLoaderBridge::Peer implementation.
virtual void OnDownloadProgress(uint64 position, uint64 size);
virtual void OnUploadProgress(uint64 position, uint64 size);
virtual void OnReceivedRedirect(const GURL& new_url);
virtual void OnReceivedResponse(
const webkit_glue::ResourceLoaderBridge::ResponseInfo& info,
bool content_filtered);
virtual void OnReceivedData(const char* data, int len);
virtual void OnCompletedRequest(const URLRequestStatus& status,
const std::string& security_info);
virtual std::string GetURLForDebugging();
private:
friend class media::FilterFactoryImpl2<SimpleDataSource, MessageLoop*, int32>;
SimpleDataSource(MessageLoop* render_loop, int32 routing_id);
virtual ~SimpleDataSource();
// Updates |url_| and |media_format_| with the given URL.
void SetURL(const GURL& url);
// Creates and starts the resource loading on the render thread.
void StartTask();
// Cancels and deletes the resource loading on the render thread.
void CancelTask();
// Passed in during construction, used when creating the bridge.
int32 routing_id_;
// Primarily used for asserting the bridge is loading on the render thread.
MessageLoop* render_loop_;
// Bridge used to load the media resource.
scoped_ptr<webkit_glue::ResourceLoaderBridge> bridge_;
media::MediaFormat media_format_;
GURL url_;
std::string data_;
int64 size_;
int64 position_;
// Simple state tracking variable.
enum State {
UNINITIALIZED,
INITIALIZING,
INITIALIZED,
STOPPED,
};
State state_;
// Used for accessing |state_|.
Lock lock_;
DISALLOW_COPY_AND_ASSIGN(SimpleDataSource);
};
} // namespace webkit_glue
#endif // WEBKIT_GLUE_MEDIA_SIMPLE_DATA_SOURCE_H_
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