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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/media/session/media_session_service_impl.h"
#include <memory>
#include "base/memory/ptr_util.h"
#include "content/browser/media/session/media_metadata_sanitizer.h"
#include "content/browser/media/session/media_session_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "mojo/public/cpp/bindings/self_owned_receiver.h"
namespace content {
MediaSessionServiceImpl::MediaSessionServiceImpl(
RenderFrameHost* render_frame_host)
: render_frame_host_id_(render_frame_host->GetGlobalId()),
playback_state_(blink::mojom::MediaSessionPlaybackState::NONE) {
MediaSessionImpl* session = GetMediaSession();
if (session) {
media_session_ = session->GetWeakPtr();
media_session_->OnServiceCreated(this);
}
}
MediaSessionServiceImpl::~MediaSessionServiceImpl() {
if (media_session_) {
media_session_->OnServiceDestroyed(this);
}
}
// static
void MediaSessionServiceImpl::Create(
RenderFrameHost* render_frame_host,
mojo::PendingReceiver<blink::mojom::MediaSessionService> receiver) {
mojo::MakeSelfOwnedReceiver(
base::WrapUnique<MediaSessionServiceImpl>(
new MediaSessionServiceImpl(render_frame_host)),
std::move(receiver));
}
GlobalRenderFrameHostId MediaSessionServiceImpl::GetRenderFrameHostId() const {
return render_frame_host_id_;
}
RenderFrameHost* MediaSessionServiceImpl::GetRenderFrameHost() const {
return RenderFrameHost::FromID(GetRenderFrameHostId());
}
void MediaSessionServiceImpl::DidFinishNavigation() {
// At this point the BrowsingContext of the frame has changed, so the members
// need to be reset, and notify MediaSessionImpl.
SetPlaybackState(blink::mojom::MediaSessionPlaybackState::NONE);
SetMetadata(nullptr);
ClearActions();
}
void MediaSessionServiceImpl::FlushForTesting() {
client_.FlushForTesting();
}
void MediaSessionServiceImpl::SetClient(
mojo::PendingRemote<blink::mojom::MediaSessionClient> client) {
client_ = mojo::Remote<blink::mojom::MediaSessionClient>(std::move(client));
}
void MediaSessionServiceImpl::SetPlaybackState(
blink::mojom::MediaSessionPlaybackState state) {
playback_state_ = state;
if (media_session_) {
media_session_->OnMediaSessionPlaybackStateChanged(this);
}
}
void MediaSessionServiceImpl::SetPositionState(
const std::optional<media_session::MediaPosition>& position) {
position_ = position;
if (media_session_) {
media_session_->RebuildAndNotifyMediaPositionChanged();
}
}
void MediaSessionServiceImpl::SetMetadata(
blink::mojom::SpecMediaMetadataPtr metadata) {
metadata_.reset();
// When receiving a MediaMetadata, the browser process can't trust that it is
// coming from a known and secure source. It must be processed accordingly.
if (!metadata.is_null()) {
if (!MediaMetadataSanitizer::CheckSanity(metadata)) {
RenderFrameHost* rfh = GetRenderFrameHost();
if (rfh) {
rfh->GetProcess()->ShutdownForBadMessage(
RenderProcessHost::CrashReportMode::GENERATE_CRASH_DUMP);
}
return;
}
metadata_ = std::move(metadata);
}
if (media_session_) {
media_session_->OnMediaSessionMetadataChanged(this);
}
}
void MediaSessionServiceImpl::SetMicrophoneState(
media_session::mojom::MicrophoneState microphone_state) {
microphone_state_ = microphone_state;
if (media_session_) {
media_session_->OnMediaSessionInfoChanged(this);
}
}
void MediaSessionServiceImpl::SetCameraState(
media_session::mojom::CameraState camera_state) {
camera_state_ = camera_state;
if (media_session_) {
media_session_->OnMediaSessionInfoChanged(this);
}
}
void MediaSessionServiceImpl::EnableAction(
media_session::mojom::MediaSessionAction action) {
actions_.insert(action);
if (media_session_) {
media_session_->OnMediaSessionActionsChanged(this);
}
}
void MediaSessionServiceImpl::DisableAction(
media_session::mojom::MediaSessionAction action) {
actions_.erase(action);
if (media_session_) {
media_session_->OnMediaSessionActionsChanged(this);
}
}
void MediaSessionServiceImpl::ClearActions() {
actions_.clear();
if (media_session_) {
media_session_->OnMediaSessionActionsChanged(this);
}
}
MediaSessionImpl* MediaSessionServiceImpl::GetMediaSession() {
RenderFrameHost* rfh = GetRenderFrameHost();
if (!rfh)
return nullptr;
WebContentsImpl* contents =
static_cast<WebContentsImpl*>(WebContentsImpl::FromRenderFrameHost(rfh));
if (!contents)
return nullptr;
return MediaSessionImpl::Get(contents);
}
} // namespace content
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