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// Copyright 2013 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.
#include "media/blink/webcontentdecryptionmoduleaccess_impl.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/single_thread_task_runner.h"
#include "base/thread_task_runner_handle.h"
#include "media/blink/webencryptedmediaclient_impl.h"
namespace media {
// The caller owns the created cdm (passed back using |result|).
static void CreateCdm(const base::WeakPtr<WebEncryptedMediaClientImpl>& client,
const blink::WebString& key_system,
bool allow_distinctive_identifier,
bool allow_persistent_state,
const blink::WebSecurityOrigin& security_origin,
blink::WebContentDecryptionModuleResult result) {
// If |client| is gone (due to the frame getting destroyed), it is
// impossible to create the CDM, so fail.
if (!client) {
result.completeWithError(
blink::WebContentDecryptionModuleExceptionInvalidStateError, 0,
"Failed to create CDM.");
return;
}
client->CreateCdm(key_system, allow_distinctive_identifier,
allow_persistent_state, security_origin, result);
}
WebContentDecryptionModuleAccessImpl*
WebContentDecryptionModuleAccessImpl::Create(
const blink::WebString& key_system,
const blink::WebMediaKeySystemConfiguration& configuration,
const blink::WebSecurityOrigin& security_origin,
const base::WeakPtr<WebEncryptedMediaClientImpl>& client) {
return new WebContentDecryptionModuleAccessImpl(key_system, configuration,
security_origin, client);
}
WebContentDecryptionModuleAccessImpl::WebContentDecryptionModuleAccessImpl(
const blink::WebString& key_system,
const blink::WebMediaKeySystemConfiguration& configuration,
const blink::WebSecurityOrigin& security_origin,
const base::WeakPtr<WebEncryptedMediaClientImpl>& client)
: key_system_(key_system),
configuration_(configuration),
security_origin_(security_origin),
client_(client) {
}
WebContentDecryptionModuleAccessImpl::~WebContentDecryptionModuleAccessImpl() {
}
blink::WebMediaKeySystemConfiguration
WebContentDecryptionModuleAccessImpl::getConfiguration() {
return configuration_;
}
void WebContentDecryptionModuleAccessImpl::createContentDecryptionModule(
blink::WebContentDecryptionModuleResult result) {
// Convert the accumulated configuration requirements to bools. Accumulated
// configurations never have optional requirements.
DCHECK(configuration_.distinctiveIdentifier !=
blink::WebMediaKeySystemConfiguration::Requirement::Optional);
DCHECK(configuration_.persistentState !=
blink::WebMediaKeySystemConfiguration::Requirement::Optional);
bool allow_distinctive_identifier =
(configuration_.distinctiveIdentifier ==
blink::WebMediaKeySystemConfiguration::Requirement::Required);
bool allow_persistent_state =
(configuration_.persistentState ==
blink::WebMediaKeySystemConfiguration::Requirement::Required);
// This method needs to run asynchronously, as it may need to load the CDM.
// As this object's lifetime is controlled by MediaKeySystemAccess on the
// blink side, copy all values needed by CreateCdm() in case the blink object
// gets garbage-collected.
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::Bind(&CreateCdm, client_, key_system_, allow_distinctive_identifier,
allow_persistent_state, security_origin_, result));
}
} // namespace media
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