blob: 9093491a579ad0963541504b628d80820cb2a135 [file] [log] [blame]
// Copyright 2017 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/gpu/android/surface_chooser_helper.h"
#include <memory>
#include "base/time/default_tick_clock.h"
#include "base/time/tick_clock.h"
#include "media/gpu/android/android_video_surface_chooser.h"
#include "media/gpu/android/promotion_hint_aggregator_impl.h"
namespace media {
namespace {
// Number of frames to defer overlays for when entering fullscreen. This lets
// blink relayout settle down a bit. If overlay positions were synchronous,
// then we wouldn't need this.
enum { kFrameDelayForFullscreenLayout = 15 };
// How often do we let the surface chooser try for an overlay? While we'll
// retry if some relevant state changes on our side (e.g., fullscreen state),
// there's plenty of state that we don't know about (e.g., power efficiency,
// memory pressure => cancelling an old overlay, etc.). We just let the chooser
// retry every once in a while for those things.
constexpr base::TimeDelta RetryChooserTimeout = base::TimeDelta::FromSeconds(5);
} // namespace
SurfaceChooserHelper::SurfaceChooserHelper(
std::unique_ptr<AndroidVideoSurfaceChooser> surface_chooser,
bool is_overlay_required,
bool promote_aggressively,
bool always_use_texture_owner,
std::unique_ptr<PromotionHintAggregator> promotion_hint_aggregator,
const base::TickClock* tick_clock)
: surface_chooser_(std::move(surface_chooser)),
is_overlay_required_(is_overlay_required),
promotion_hint_aggregator_(
promotion_hint_aggregator
? std::move(promotion_hint_aggregator)
: std::make_unique<PromotionHintAggregatorImpl>()),
tick_clock_(tick_clock ? tick_clock
: base::DefaultTickClock::GetInstance()) {
surface_chooser_state_.is_required = is_overlay_required_;
surface_chooser_state_.promote_aggressively = promote_aggressively;
surface_chooser_state_.always_use_texture_owner = always_use_texture_owner;
}
SurfaceChooserHelper::~SurfaceChooserHelper() {}
void SurfaceChooserHelper::SetSecureSurfaceMode(SecureSurfaceMode mode) {
bool is_secure = false;
requires_secure_video_surface_ = false;
switch (mode) {
case SecureSurfaceMode::kInsecure:
break;
case SecureSurfaceMode::kRequested:
is_secure = true;
break;
case SecureSurfaceMode::kRequired:
is_secure = true;
requires_secure_video_surface_ = true;
break;
}
surface_chooser_state_.is_secure = is_secure;
surface_chooser_state_.is_required =
requires_secure_video_surface_ || is_overlay_required_;
}
void SurfaceChooserHelper::SetIsFullscreen(bool is_fullscreen) {
// TODO(liberato): AVDA previously only set is_expecting_relayout when
// getting overlay info, not when checking fullscreen for the first time.
// This might affect pre-M devices. I think the pre-M path doesn't care.
if (is_fullscreen && !surface_chooser_state_.is_fullscreen) {
// It would be nice if we could just delay until we get a hint from an
// overlay that's "in fullscreen" in the sense that the CompositorFrame it
// came from had some flag set to indicate that the renderer was in
// fullscreen mode when it was generated. However, even that's hard, since
// there's no real connection between "renderer finds out about fullscreen"
// and "blink has completed layouts for it". The latter is what we really
// want to know.
surface_chooser_state_.is_expecting_relayout = true;
hints_until_clear_relayout_flag_ = kFrameDelayForFullscreenLayout;
}
surface_chooser_state_.is_fullscreen = is_fullscreen;
}
void SurfaceChooserHelper::SetVideoRotation(VideoRotation video_rotation) {
surface_chooser_state_.video_rotation = video_rotation;
}
void SurfaceChooserHelper::UpdateChooserState(
base::Optional<AndroidOverlayFactoryCB> new_factory) {
surface_chooser_->UpdateState(std::move(new_factory), surface_chooser_state_);
}
void SurfaceChooserHelper::NotifyPromotionHintAndUpdateChooser(
const PromotionHintAggregator::Hint& hint,
bool is_using_overlay) {
bool update_state = false;
promotion_hint_aggregator_->NotifyPromotionHint(hint);
// If we're expecting a full screen relayout, then also use this hint as a
// notification that another frame has happened.
if (hints_until_clear_relayout_flag_ > 0) {
hints_until_clear_relayout_flag_--;
if (hints_until_clear_relayout_flag_ == 0) {
surface_chooser_state_.is_expecting_relayout = false;
update_state = true;
}
}
surface_chooser_state_.initial_position = hint.screen_rect;
bool promotable = promotion_hint_aggregator_->IsSafeToPromote();
if (promotable != surface_chooser_state_.is_compositor_promotable) {
surface_chooser_state_.is_compositor_promotable = promotable;
update_state = true;
}
// If we've been provided with enough new frames, then update the state even
// if it hasn't changed. This lets |surface_chooser_| retry for an overlay.
// It's especially helpful for power-efficient overlays, since we don't know
// when an overlay becomes power efficient. It also helps retry any failure
// that's not accompanied by a state change, such as if android destroys the
// overlay asynchronously for a transient reason.
//
// If we're already using an overlay, then there's no need to do this.
base::TimeTicks now = tick_clock_->NowTicks();
if (!is_using_overlay &&
now - most_recent_chooser_retry_ >= RetryChooserTimeout) {
update_state = true;
}
if (update_state) {
most_recent_chooser_retry_ = now;
UpdateChooserState(base::Optional<AndroidOverlayFactoryCB>());
}
}
SurfaceChooserHelper::FrameInformation
SurfaceChooserHelper::ComputeFrameInformation(bool is_using_overlay) {
if (!is_using_overlay) {
// Not an overlay.
return surface_chooser_state_.is_secure
? FrameInformation::NON_OVERLAY_L3
: FrameInformation::NON_OVERLAY_INSECURE;
}
// Overlay.
if (surface_chooser_state_.is_secure) {
return surface_chooser_state_.is_required ? FrameInformation::OVERLAY_L1
: FrameInformation::OVERLAY_L3;
}
return surface_chooser_state_.is_fullscreen
? FrameInformation::OVERLAY_INSECURE_PLAYER_ELEMENT_FULLSCREEN
: FrameInformation::OVERLAY_INSECURE_NON_PLAYER_ELEMENT_FULLSCREEN;
}
} // namespace media