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media / mojo / clients / mojo_cdm_factory.cc [blame]
// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/mojo/clients/mojo_cdm_factory.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/memory/scoped_refptr.h"
#include "base/task/single_thread_task_runner.h"
#include "media/base/content_decryption_module.h"
#include "media/base/key_systems.h"
#include "media/cdm/aes_decryptor.h"
#include "media/mojo/clients/mojo_cdm.h"
#include "media/mojo/mojom/content_decryption_module.mojom.h"
#include "media/mojo/mojom/interface_factory.mojom.h"
#include "mojo/public/cpp/bindings/callback_helpers.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace media {
namespace {
void OnCdmCreated(
const CdmConfig& cdm_config,
const SessionMessageCB& session_message_cb,
const SessionClosedCB& session_closed_cb,
const SessionKeysChangeCB& session_keys_change_cb,
const SessionExpirationUpdateCB& session_expiration_update_cb,
CdmCreatedCB cdm_created_cb,
mojo::PendingRemote<mojom::ContentDecryptionModule> cdm_remote,
media::mojom::CdmContextPtr cdm_context,
CreateCdmStatus status) {
// Convert from a PendingRemote to Remote so we can verify that it is
// connected, this will also check if |cdm_remote| is null.
mojo::Remote<mojom::ContentDecryptionModule> remote(std::move(cdm_remote));
if (!remote || !remote.is_connected() || !cdm_context) {
std::move(cdm_created_cb).Run(nullptr, status);
return;
}
std::move(cdm_created_cb)
.Run(base::MakeRefCounted<MojoCdm>(
std::move(remote), std::move(cdm_context), cdm_config,
session_message_cb, session_closed_cb, session_keys_change_cb,
session_expiration_update_cb),
status);
}
} // namespace
MojoCdmFactory::MojoCdmFactory(
media::mojom::InterfaceFactory* interface_factory,
KeySystems* key_systems)
: interface_factory_(interface_factory), key_systems_(key_systems) {
DCHECK(interface_factory_);
DCHECK(key_systems_);
}
MojoCdmFactory::~MojoCdmFactory() = default;
void MojoCdmFactory::Create(
const CdmConfig& cdm_config,
const SessionMessageCB& session_message_cb,
const SessionClosedCB& session_closed_cb,
const SessionKeysChangeCB& session_keys_change_cb,
const SessionExpirationUpdateCB& session_expiration_update_cb,
CdmCreatedCB cdm_created_cb) {
DVLOG(2) << __func__ << ": cdm_config=" << cdm_config;
// If AesDecryptor can be used, always use it here in the local process.
// Note: We should not run AesDecryptor in the browser process except for
// testing. See http://crbug.com/441957.
// Note: Previously MojoRenderer doesn't work with local CDMs, this has
// been solved by using DecryptingRenderer. See http://crbug.com/913775.
if (key_systems_->CanUseAesDecryptor(cdm_config.key_system)) {
scoped_refptr<ContentDecryptionModule> cdm(
new AesDecryptor(session_message_cb, session_closed_cb,
session_keys_change_cb, session_expiration_update_cb));
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(std::move(cdm_created_cb), cdm,
CreateCdmStatus::kSuccess));
return;
}
// Use `mojo::WrapCallbackWithDefaultInvokeIfNotRun()` in case the CDM process
// crashes.
interface_factory_->CreateCdm(
cdm_config,
mojo::WrapCallbackWithDefaultInvokeIfNotRun(
base::BindOnce(&OnCdmCreated, cdm_config, session_message_cb,
session_closed_cb, session_keys_change_cb,
session_expiration_update_cb,
std::move(cdm_created_cb)),
mojo::NullRemote(), nullptr, CreateCdmStatus::kDisconnectionError));
}
} // namespace media