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// Copyright 2014 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 "chromecast/media/cdm/browser_cdm_cast.h"
#include <utility>
#include "base/bind.h"
#include "base/location.h"
#include "base/single_thread_task_runner.h"
#include "base/thread_task_runner_handle.h"
#include "media/base/cdm_key_information.h"
#include "media/base/cdm_promise.h"
#include "media/cdm/player_tracker_impl.h"
namespace chromecast {
namespace media {
namespace {
// media::CdmPromiseTemplate implementation that wraps a promise so as to
// allow passing to other threads.
template <typename... T>
class CdmPromiseInternal : public ::media::CdmPromiseTemplate<T...> {
public:
CdmPromiseInternal(scoped_ptr<::media::CdmPromiseTemplate<T...>> promise)
: task_runner_(base::ThreadTaskRunnerHandle::Get()),
promise_(std::move(promise)) {}
~CdmPromiseInternal() final {
// Promise must be resolved or rejected before destruction.
DCHECK(!promise_);
}
// CdmPromiseTemplate<> implementation.
void resolve(const T&... result) final;
void reject(::media::MediaKeys::Exception exception,
uint32_t system_code,
const std::string& error_message) final {
MarkPromiseSettled();
task_runner_->PostTask(
FROM_HERE,
base::Bind(&::media::CdmPromiseTemplate<T...>::reject,
base::Owned(promise_.release()),
exception, system_code, error_message));
}
private:
using ::media::CdmPromiseTemplate<T...>::MarkPromiseSettled;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
scoped_ptr<::media::CdmPromiseTemplate<T...>> promise_;
};
template <typename... T>
void CdmPromiseInternal<T...>::resolve(const T&... result) {
MarkPromiseSettled();
task_runner_->PostTask(
FROM_HERE,
base::Bind(&::media::CdmPromiseTemplate<T...>::resolve,
base::Owned(promise_.release()),
result...));
}
template <typename... T>
scoped_ptr<CdmPromiseInternal<T...>> BindPromiseToCurrentLoop(
scoped_ptr<::media::CdmPromiseTemplate<T...>> promise) {
return make_scoped_ptr(new CdmPromiseInternal<T...>(std::move(promise)));
}
} // namespace
BrowserCdmCast::BrowserCdmCast() {
thread_checker_.DetachFromThread();
}
BrowserCdmCast::~BrowserCdmCast() {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(player_tracker_impl_.get());
player_tracker_impl_->NotifyCdmUnset();
}
void BrowserCdmCast::Initialize(
const ::media::SessionMessageCB& session_message_cb,
const ::media::SessionClosedCB& session_closed_cb,
const ::media::LegacySessionErrorCB& legacy_session_error_cb,
const ::media::SessionKeysChangeCB& session_keys_change_cb,
const ::media::SessionExpirationUpdateCB& session_expiration_update_cb) {
DCHECK(thread_checker_.CalledOnValidThread());
player_tracker_impl_.reset(new ::media::PlayerTrackerImpl());
session_message_cb_ = session_message_cb;
session_closed_cb_ = session_closed_cb;
legacy_session_error_cb_ = legacy_session_error_cb;
session_keys_change_cb_ = session_keys_change_cb;
session_expiration_update_cb_ = session_expiration_update_cb;
InitializeInternal();
}
int BrowserCdmCast::RegisterPlayer(const base::Closure& new_key_cb,
const base::Closure& cdm_unset_cb) {
DCHECK(thread_checker_.CalledOnValidThread());
return player_tracker_impl_->RegisterPlayer(new_key_cb, cdm_unset_cb);
}
void BrowserCdmCast::UnregisterPlayer(int registration_id) {
DCHECK(thread_checker_.CalledOnValidThread());
player_tracker_impl_->UnregisterPlayer(registration_id);
}
void BrowserCdmCast::OnSessionMessage(
const std::string& session_id,
const std::vector<uint8_t>& message,
const GURL& destination_url,
::media::MediaKeys::MessageType message_type) {
session_message_cb_.Run(session_id,
message_type,
message,
destination_url);
}
void BrowserCdmCast::OnSessionClosed(const std::string& session_id) {
session_closed_cb_.Run(session_id);
}
void BrowserCdmCast::OnSessionKeysChange(const std::string& session_id,
bool newly_usable_keys,
::media::CdmKeysInfo keys_info) {
session_keys_change_cb_.Run(session_id, newly_usable_keys,
std::move(keys_info));
if (newly_usable_keys)
player_tracker_impl_->NotifyNewKey();
}
void BrowserCdmCast::KeyIdAndKeyPairsToInfo(
const ::media::KeyIdAndKeyPairs& keys,
::media::CdmKeysInfo* keys_info) {
DCHECK(keys_info);
for (const std::pair<std::string, std::string>& key : keys) {
scoped_ptr<::media::CdmKeyInformation> cdm_key_information(
new ::media::CdmKeyInformation(key.first,
::media::CdmKeyInformation::USABLE, 0));
keys_info->push_back(cdm_key_information.release());
}
}
// A macro runs current member function on |task_runner_| thread.
#define FORWARD_ON_CDM_THREAD(param_fn, ...) \
task_runner_->PostTask( \
FROM_HERE, \
base::Bind(&BrowserCdmCast::param_fn, \
base::Unretained(browser_cdm_cast_.get()), ##__VA_ARGS__))
BrowserCdmCastUi::BrowserCdmCastUi(
const scoped_refptr<BrowserCdmCast>& browser_cdm_cast,
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner)
: browser_cdm_cast_(browser_cdm_cast), task_runner_(task_runner) {}
BrowserCdmCastUi::~BrowserCdmCastUi() {
DCHECK(thread_checker_.CalledOnValidThread());
browser_cdm_cast_->AddRef();
BrowserCdmCast* raw_cdm = browser_cdm_cast_.get();
browser_cdm_cast_ = nullptr;
task_runner_->ReleaseSoon(FROM_HERE, raw_cdm);
}
BrowserCdmCast* BrowserCdmCastUi::browser_cdm_cast() const {
DCHECK(thread_checker_.CalledOnValidThread());
return browser_cdm_cast_.get();
}
void BrowserCdmCastUi::SetServerCertificate(
const std::vector<uint8_t>& certificate,
scoped_ptr<::media::SimpleCdmPromise> promise) {
DCHECK(thread_checker_.CalledOnValidThread());
FORWARD_ON_CDM_THREAD(
SetServerCertificate, certificate,
base::Passed(BindPromiseToCurrentLoop(std::move(promise))));
}
void BrowserCdmCastUi::CreateSessionAndGenerateRequest(
::media::MediaKeys::SessionType session_type,
::media::EmeInitDataType init_data_type,
const std::vector<uint8_t>& init_data,
scoped_ptr<::media::NewSessionCdmPromise> promise) {
DCHECK(thread_checker_.CalledOnValidThread());
FORWARD_ON_CDM_THREAD(
CreateSessionAndGenerateRequest, session_type, init_data_type, init_data,
base::Passed(BindPromiseToCurrentLoop(std::move(promise))));
}
void BrowserCdmCastUi::LoadSession(
::media::MediaKeys::SessionType session_type,
const std::string& session_id,
scoped_ptr<::media::NewSessionCdmPromise> promise) {
DCHECK(thread_checker_.CalledOnValidThread());
FORWARD_ON_CDM_THREAD(
LoadSession, session_type, session_id,
base::Passed(BindPromiseToCurrentLoop(std::move(promise))));
}
void BrowserCdmCastUi::UpdateSession(
const std::string& session_id,
const std::vector<uint8_t>& response,
scoped_ptr<::media::SimpleCdmPromise> promise) {
DCHECK(thread_checker_.CalledOnValidThread());
FORWARD_ON_CDM_THREAD(
UpdateSession, session_id, response,
base::Passed(BindPromiseToCurrentLoop(std::move(promise))));
}
void BrowserCdmCastUi::CloseSession(
const std::string& session_id,
scoped_ptr<::media::SimpleCdmPromise> promise) {
DCHECK(thread_checker_.CalledOnValidThread());
FORWARD_ON_CDM_THREAD(
CloseSession, session_id,
base::Passed(BindPromiseToCurrentLoop(std::move(promise))));
}
void BrowserCdmCastUi::RemoveSession(
const std::string& session_id,
scoped_ptr<::media::SimpleCdmPromise> promise) {
DCHECK(thread_checker_.CalledOnValidThread());
FORWARD_ON_CDM_THREAD(
RemoveSession, session_id,
base::Passed(BindPromiseToCurrentLoop(std::move(promise))));
}
// A default empty implementation for subclasses that don't need to provide
// any key system specific initialization.
void BrowserCdmCast::InitializeInternal() {
}
} // namespace media
} // namespace chromecast
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