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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/accessibility/live_caption/live_caption_unavailability_notifier.h"
#include <memory>
#include <utility>
#include "base/containers/contains.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/accessibility/caption_bubble_context_browser.h"
#include "chrome/browser/accessibility/live_caption/live_caption_controller_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/chrome_pages.h"
#include "components/live_caption/live_caption_controller.h"
#include "components/live_caption/pref_names.h"
#include "components/live_caption/views/caption_bubble.h"
#include "components/live_caption/views/caption_bubble_model.h"
#include "components/prefs/pref_change_registrar.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "media/mojo/mojom/renderer_extensions.mojom.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/self_owned_receiver.h"
#include "url/origin.h"
namespace captions {
// static
void LiveCaptionUnavailabilityNotifier::Create(
content::RenderFrameHost* frame_host,
mojo::PendingReceiver<media::mojom::MediaFoundationRendererNotifier>
receiver) {
CHECK(frame_host);
// The object is bound to the lifetime of |frame_host| and the mojo
// connection. See DocumentService for details.
new LiveCaptionUnavailabilityNotifier(*frame_host, std::move(receiver));
}
LiveCaptionUnavailabilityNotifier::LiveCaptionUnavailabilityNotifier(
content::RenderFrameHost& frame_host,
mojo::PendingReceiver<media::mojom::MediaFoundationRendererNotifier>
receiver)
: DocumentService<media::mojom::MediaFoundationRendererNotifier>(
frame_host,
std::move(receiver)) {
content::WebContents* web_contents = GetWebContents();
if (!web_contents)
return;
context_ = CaptionBubbleContextBrowser::Create(web_contents);
Profile* profile =
Profile::FromBrowserContext(render_frame_host().GetBrowserContext());
profile_prefs_ = profile->GetPrefs();
pref_change_registrar_ = std::make_unique<PrefChangeRegistrar>();
pref_change_registrar_->Init(profile_prefs_);
// Unretained is safe because |this| owns the pref_change_registrar_.
pref_change_registrar_->Add(
prefs::kLiveCaptionEnabled,
base::BindRepeating(&LiveCaptionUnavailabilityNotifier::
OnSpeechRecognitionAvailabilityChanged,
base::Unretained(this)));
}
LiveCaptionUnavailabilityNotifier::~LiveCaptionUnavailabilityNotifier() {
LiveCaptionController* live_caption_controller = GetLiveCaptionController();
if (live_caption_controller)
live_caption_controller->OnAudioStreamEnd(GetWebContents(), context_.get());
}
void LiveCaptionUnavailabilityNotifier::MediaFoundationRendererCreated(
mojo::PendingReceiver<media::mojom::MediaFoundationRendererObserver>
observer) {
observers_.Add(this, std::move(observer));
if (ShouldDisplayMediaFoundationRendererError()) {
DisplayMediaFoundationRendererError();
}
}
content::WebContents* LiveCaptionUnavailabilityNotifier::GetWebContents() {
return content::WebContents::FromRenderFrameHost(&render_frame_host());
}
LiveCaptionController*
LiveCaptionUnavailabilityNotifier::GetLiveCaptionController() {
Profile* profile =
Profile::FromBrowserContext(render_frame_host().GetBrowserContext());
if (!profile)
return nullptr;
return LiveCaptionControllerFactory::GetForProfile(profile);
}
bool LiveCaptionUnavailabilityNotifier::
ShouldDisplayMediaFoundationRendererError() {
if (!profile_prefs_->GetBoolean(prefs::kLiveCaptionEnabled))
return false;
if (observers_.empty())
return false;
return !ErrorSilencedForOrigin();
}
bool LiveCaptionUnavailabilityNotifier::ErrorSilencedForOrigin() {
return base::Contains(
profile_prefs_->GetList(
prefs::kLiveCaptionMediaFoundationRendererErrorSilenced),
render_frame_host().GetLastCommittedOrigin().Serialize());
}
void LiveCaptionUnavailabilityNotifier::DisplayMediaFoundationRendererError() {
LiveCaptionController* live_caption_controller = GetLiveCaptionController();
if (!live_caption_controller)
return;
// This will trigger the caption bubble to display a message informing the
// user that Live Caption is unavailable and link them to the settings page
// where they can disable the media foundation renderer to enable Live
// Caption. The error message may be overwritten if recognition events are
// received from another audio stream.
live_caption_controller->OnError(
context_.get(),
CaptionBubbleErrorType::kMediaFoundationRendererUnsupported,
base::BindRepeating(&LiveCaptionUnavailabilityNotifier::
OnMediaFoundationRendererErrorClicked,
weak_factory_.GetWeakPtr()),
base::BindRepeating(
&LiveCaptionUnavailabilityNotifier::
OnMediaFoundationRendererErrorDoNotShowAgainCheckboxClicked,
weak_factory_.GetWeakPtr()));
}
void LiveCaptionUnavailabilityNotifier::
OnMediaFoundationRendererErrorDoNotShowAgainCheckboxClicked(
CaptionBubbleErrorType error_type,
bool checked) {
PrefService* prefs =
Profile::FromBrowserContext(render_frame_host().GetBrowserContext())
->GetPrefs();
ScopedListPrefUpdate update(
prefs, prefs::kLiveCaptionMediaFoundationRendererErrorSilenced);
if (checked) {
update->Append(render_frame_host().GetLastCommittedOrigin().Serialize());
} else {
update->EraseIf([&](const base::Value& value) {
return value.GetString() ==
render_frame_host().GetLastCommittedOrigin().Serialize();
});
}
}
void LiveCaptionUnavailabilityNotifier::
OnMediaFoundationRendererErrorClicked() {
Profile* profile =
Profile::FromBrowserContext(render_frame_host().GetBrowserContext());
chrome::ShowSiteSettings(
profile, render_frame_host().GetLastCommittedOrigin().GetURL());
}
void LiveCaptionUnavailabilityNotifier::
OnSpeechRecognitionAvailabilityChanged() {
if (ShouldDisplayMediaFoundationRendererError()) {
DisplayMediaFoundationRendererError();
}
}
} // namespace captions
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