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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 <memory>
#include <utility>
#include "base/bind.h"
#include "base/location.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/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,
const blink::WebSecurityOrigin& security_origin,
const CdmConfig& cdm_config,
std::unique_ptr<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::kWebContentDecryptionModuleExceptionInvalidStateError, 0,
"Failed to create CDM.");
return;
}
client->CreateCdm(key_system, security_origin, cdm_config, std::move(result));
}
// static
WebContentDecryptionModuleAccessImpl*
WebContentDecryptionModuleAccessImpl::From(
blink::WebContentDecryptionModuleAccess* cdm_access) {
return static_cast<WebContentDecryptionModuleAccessImpl*>(cdm_access);
}
std::unique_ptr<WebContentDecryptionModuleAccessImpl>
WebContentDecryptionModuleAccessImpl::Create(
const blink::WebString& key_system,
const blink::WebSecurityOrigin& security_origin,
const blink::WebMediaKeySystemConfiguration& configuration,
const CdmConfig& cdm_config,
const base::WeakPtr<WebEncryptedMediaClientImpl>& client) {
return std::make_unique<WebContentDecryptionModuleAccessImpl>(
key_system, security_origin, configuration, cdm_config, client);
}
WebContentDecryptionModuleAccessImpl::WebContentDecryptionModuleAccessImpl(
const blink::WebString& key_system,
const blink::WebSecurityOrigin& security_origin,
const blink::WebMediaKeySystemConfiguration& configuration,
const CdmConfig& cdm_config,
const base::WeakPtr<WebEncryptedMediaClientImpl>& client)
: key_system_(key_system),
security_origin_(security_origin),
configuration_(configuration),
cdm_config_(cdm_config),
client_(client) {
}
WebContentDecryptionModuleAccessImpl::~WebContentDecryptionModuleAccessImpl() =
default;
blink::WebString WebContentDecryptionModuleAccessImpl::GetKeySystem() {
return key_system_;
}
blink::WebMediaKeySystemConfiguration
WebContentDecryptionModuleAccessImpl::GetConfiguration() {
return configuration_;
}
void WebContentDecryptionModuleAccessImpl::CreateContentDecryptionModule(
blink::WebContentDecryptionModuleResult result,
scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
// 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.
std::unique_ptr<blink::WebContentDecryptionModuleResult> result_copy(
new blink::WebContentDecryptionModuleResult(result));
task_runner->PostTask(
FROM_HERE,
base::BindOnce(&CreateCdm, client_, key_system_, security_origin_,
cdm_config_, std::move(result_copy)));
}
bool WebContentDecryptionModuleAccessImpl::UseHardwareSecureCodecs() const {
return cdm_config_.use_hw_secure_codecs;
}
} // namespace media
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