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// 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIA_CAPABILITIES_MEDIA_CAPABILITIES_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIA_CAPABILITIES_MEDIA_CAPABILITIES_H_
#include "media/base/video_codecs.h" // for media::VideoCodecProfile
#include "media/learning/mojo/public/cpp/mojo_learning_task_controller.h"
#include "media/learning/mojo/public/mojom/learning_task_controller.mojom-blink.h"
#include "media/mojo/mojom/video_decode_perf_history.mojom-blink.h"
#include "third_party/blink/public/common/privacy_budget/identifiable_token.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_video_configuration.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/visitor.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_remote.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_wrapper_mode.h"
#include "third_party/blink/renderer/platform/supplementable.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
namespace blink {
class ExceptionState;
class ExecutionContext;
class MediaDecodingConfiguration;
class MediaEncodingConfiguration;
class MediaKeySystemAccess;
class NavigatorBase;
class ScriptPromise;
class ScriptPromiseResolver;
class ScriptState;
class MODULES_EXPORT MediaCapabilities final
: public ScriptWrappable,
public Supplement<NavigatorBase> {
DEFINE_WRAPPERTYPEINFO();
public:
static const char kLearningBadWindowThresholdParamName[];
static const char kLearningNnrThresholdParamName[];
static const char kSupplementName[];
// Getter for navigator.mediaCapabilities
static MediaCapabilities* mediaCapabilities(NavigatorBase&);
explicit MediaCapabilities(NavigatorBase&);
void Trace(blink::Visitor* visitor) const override;
ScriptPromise decodingInfo(ScriptState*,
const MediaDecodingConfiguration*,
ExceptionState&);
ScriptPromise encodingInfo(ScriptState*, const MediaEncodingConfiguration*);
private:
// Stores pending callback state from and intermediate prediction values while
// we wait for all predictions to arrive.
class PendingCallbackState : public GarbageCollected<PendingCallbackState> {
public:
PendingCallbackState(ScriptPromiseResolver* resolver,
MediaKeySystemAccess* access,
const base::TimeTicks& request_time,
base::Optional<IdentifiableToken> input_token);
virtual void Trace(blink::Visitor* visitor) const;
Member<ScriptPromiseResolver> resolver;
Member<MediaKeySystemAccess> key_system_access;
base::Optional<bool> is_bad_window_prediction_smooth;
base::Optional<bool> is_nnr_prediction_smooth;
base::Optional<bool> db_is_smooth;
base::Optional<bool> db_is_power_efficient;
base::Optional<bool> is_gpu_factories_supported;
base::TimeTicks request_time;
base::Optional<IdentifiableToken> input_token;
};
// Lazily binds remote LearningTaskControllers for ML smoothness predictions
// and returns whether binding succeeds. Returns true if it was already bound.
bool EnsureLearningPredictors(ExecutionContext*);
// Lazily binds to the VideoDecodePerfHistory service. Returns whether it was
// successful. Returns true if it was already bound.
bool EnsurePerfHistoryService(ExecutionContext*);
ScriptPromise GetEmeSupport(ScriptState*,
media::VideoCodec,
media::VideoCodecProfile,
media::VideoColorSpace,
const MediaDecodingConfiguration*,
const base::TimeTicks& request_time,
ExceptionState&);
// Gets perf info from VideoDecodePerrHistory DB. Will optionally kick off
// parallel request to GetPerfInfo_ML() when learning experiment is enabled.
void GetPerfInfo(media::VideoCodec,
media::VideoCodecProfile,
media::VideoColorSpace,
const MediaDecodingConfiguration*,
const base::TimeTicks& request_time,
ScriptPromiseResolver*,
MediaKeySystemAccess*);
// Gets ML perf predictions from remote LearingTaskControllers.
void GetPerfInfo_ML(ExecutionContext* execution_context,
int callback_id,
media::VideoCodec video_codec,
media::VideoCodecProfile video_profile,
int width,
double framerate);
// Query media::GpuVideoAcceleratorFactories for support of hardware
// accelerate decode. Only called when |UseGpuFactoriesForPowerEfficient()|
// is true.
void GetGpuFactoriesSupport(int callback_id,
media::VideoCodec video_codec,
media::VideoCodecProfile video_profile,
media::VideoColorSpace,
const MediaDecodingConfiguration*);
// Callback for perf info from the VideoDecodePerfHistory service.
void OnPerfHistoryInfo(int callback_id,
bool is_smooth,
bool is_power_efficient);
// Callback for predictions from |bad_window_predictor_|.
void OnBadWindowPrediction(
int callback_id,
const base::Optional<::media::learning::TargetHistogram>& histogram);
// Callback for predictions from |nnr_predictor_|.
void OnNnrPrediction(
int callback_id,
const base::Optional<::media::learning::TargetHistogram>& histogram);
// Callback for GetGpuFactoriesSupport().
void OnGpuFactoriesSupport(int callback_id, bool is_supported);
// Resolves the callback with associated |callback_id| and removes it from the
// |pending_callback_map_|.
void ResolveCallbackIfReady(int callback_id);
// Creates a new (incremented) callback ID from |last_callback_id_| for
// mapping in |pending_cb_map_|.
int CreateCallbackId();
HeapMojoRemote<media::mojom::blink::VideoDecodePerfHistory,
HeapMojoWrapperMode::kWithoutContextObserver>
decode_history_service_;
// Connection to a browser-process LearningTaskController for predicting the
// number of consecutive "bad" dropped frame windows during a playback. See
// media::SmoothnessHelper.
HeapMojoRemote<media::learning::mojom::blink::LearningTaskController,
HeapMojoWrapperMode::kWithoutContextObserver>
bad_window_predictor_;
// Connects to a browser-process LearningTaskController for predicting the
// number of consecutive non-network re-buffers (NNRs). See
// media::SmoothnessHelper.
HeapMojoRemote<media::learning::mojom::blink::LearningTaskController,
HeapMojoWrapperMode::kWithoutContextObserver>
nnr_predictor_;
// Holds the last key for callbacks in the map below. Incremented for each
// usage.
int last_callback_id_ = 0;
// Maps a callback ID to state for pending callbacks.
HeapHashMap<int, Member<PendingCallbackState>> pending_cb_map_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIA_CAPABILITIES_MEDIA_CAPABILITIES_H_
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