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// Copyright (c) 2010 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/filters.h"
#include "webkit/glue/media/media_resource_loader_bridge_factory.h"
class MessageLoop;
class WebMediaPlayerDelegateImpl;
namespace webkit_glue {
class SimpleDataSource : public media::DataSource,
public webkit_glue::ResourceLoaderBridge::Peer {
public:
SimpleDataSource(
MessageLoop* render_loop,
webkit_glue::MediaResourceLoaderBridgeFactory* bridge_factory);
virtual ~SimpleDataSource();
// MediaFilter implementation.
virtual void Stop(media::FilterCallback* callback);
// DataSource implementation.
virtual void Initialize(const std::string& url,
media::FilterCallback* callback);
virtual const media::MediaFormat& media_format();
virtual void Read(int64 position, size_t size,
uint8* data, ReadCallback* read_callback);
virtual bool GetSize(int64* size_out);
virtual bool IsStreaming();
// webkit_glue::ResourceLoaderBridge::Peer implementation.
virtual void OnUploadProgress(uint64 position, uint64 size) {}
virtual bool OnReceivedRedirect(
const GURL& new_url,
const webkit_glue::ResourceResponseInfo& info,
bool* has_new_first_party_for_cookies,
GURL* new_first_party_for_cookies);
virtual void OnReceivedResponse(
const webkit_glue::ResourceResponseInfo& info,
bool content_filtered);
virtual void OnDownloadedData(int len) {}
virtual void OnReceivedData(const char* data, int len);
virtual void OnCompletedRequest(const URLRequestStatus& status,
const std::string& security_info,
const base::Time& completion_time);
private:
// 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();
// Perform initialization completion tasks under a lock.
void DoneInitialization_Locked(bool success);
// Primarily used for asserting the bridge is loading on the render thread.
MessageLoop* render_loop_;
// Factory to create a bridge.
scoped_ptr<webkit_glue::MediaResourceLoaderBridgeFactory> bridge_factory_;
// Bridge used to load the media resource.
scoped_ptr<webkit_glue::ResourceLoaderBridge> bridge_;
media::MediaFormat media_format_;
GURL url_;
std::string data_;
int64 size_;
// Simple state tracking variable.
enum State {
UNINITIALIZED,
INITIALIZING,
INITIALIZED,
STOPPED,
};
State state_;
// Used for accessing |state_|.
Lock lock_;
// Filter callbacks.
scoped_ptr<media::FilterCallback> initialize_callback_;
DISALLOW_COPY_AND_ASSIGN(SimpleDataSource);
};
} // namespace webkit_glue
#endif // WEBKIT_GLUE_MEDIA_SIMPLE_DATA_SOURCE_H_
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