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// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_WEB_URL_H_
#define COBALT_WEB_URL_H_
#include <string>
#include "cobalt/loader/blob_fetcher.h"
#include "cobalt/script/environment_settings.h"
#include "cobalt/script/exception_state.h"
#include "cobalt/script/wrappable.h"
#include "cobalt/web/blob.h"
namespace cobalt {
namespace dom {
class MediaSource;
extern void RegisterMediaSourceObjectURL(
script::EnvironmentSettings* environment_settings,
const std::string& blob_url,
const scoped_refptr<dom::MediaSource>& media_source);
extern bool UnregisterMediaSourceObjectURL(
script::EnvironmentSettings* environment_settings, const std::string& url);
} // namespace dom
namespace web {
// The URL interface contains static functions CreateObjectURL() and
// RevokeObjectURL(). The former is used to create urls in string from
// JavaScript blob objects. The latter is used to revoke the url.
// https://www.w3.org/TR/2015/WD-FileAPI-20150421/#URL-object
//
// The Media Source Extension extends it to create an url from a
// dom::MediaSource object so we can assign it to HTMLMediaElement.src.
// https://rawgit.com/w3c/media-source/cfb1b3d4309a6e6e2c01bd87e048758172a86e4b/media-source.html#dom-createobjecturl
class URL : public URLUtils, public script::Wrappable {
public:
URL(const std::string& url, const std::string& base,
script::ExceptionState* exception_state);
static std::string CreateObjectURL(
script::EnvironmentSettings* environment_settings,
const scoped_refptr<dom::MediaSource>& media_source);
static std::string CreateObjectURL(
script::EnvironmentSettings* environment_settings,
const scoped_refptr<Blob>& blob);
static void RevokeObjectURL(script::EnvironmentSettings* environment_settings,
const std::string& url);
static loader::BlobFetcher::ResolverCallback MakeBlobResolverCallback(
Blob::Registry* blob_registry) {
DCHECK(blob_registry);
return base::Bind(&BlobResolver, blob_registry);
}
DEFINE_WRAPPABLE_TYPE(URL);
private:
static bool BlobResolver(Blob::Registry* registry, const GURL& url,
const char** data, size_t* size);
};
} // namespace web
} // namespace cobalt
#endif // COBALT_WEB_URL_H_