blob: 734af43e67a2340dcf0abbf1d3eadb33bdba73a8 [file] [log] [blame]
// 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 <stdint.h>
#include <memory>
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/timer/timer.h"
#include "base/unguessable_token.h"
#include "media/base/buffering_state.h"
#include "media/base/media_resource.h"
#include "media/base/pipeline_status.h"
#include "media/base/renderer_client.h"
#include "media/mojo/interfaces/renderer.mojom.h"
#include "media/mojo/services/media_mojo_export.h"
#include "mojo/public/cpp/bindings/strong_binding.h"
namespace media {
class AudioRendererSink;
class MediaResourceShim;
class ContentDecryptionModule;
class MojoCdmServiceContext;
class Renderer;
class VideoRendererSink;
// A mojom::Renderer implementation that use a media::Renderer to render
// media streams.
class MEDIA_MOJO_EXPORT MojoRendererService
: NON_EXPORTED_BASE(public mojom::Renderer),
public RendererClient {
using InitiateSurfaceRequestCB = base::Callback<base::UnguessableToken()>;
// Helper function to bind MojoRendererService with a StrongBinding,
// which is safely accessible via the returned StrongBindingPtr.
static mojo::StrongBindingPtr<mojom::Renderer> Create(
base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context,
scoped_refptr<AudioRendererSink> audio_sink,
std::unique_ptr<VideoRendererSink> video_sink,
std::unique_ptr<media::Renderer> renderer,
InitiateSurfaceRequestCB initiate_surface_request_cb,
mojo::InterfaceRequest<mojom::Renderer> request);
// |mojo_cdm_service_context| can be used to find the CDM to support
// encrypted media. If null, encrypted media is not supported.
base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context,
scoped_refptr<AudioRendererSink> audio_sink,
std::unique_ptr<VideoRendererSink> video_sink,
std::unique_ptr<media::Renderer> renderer,
InitiateSurfaceRequestCB initiate_surface_request_cb);
~MojoRendererService() final;
// mojom::Renderer implementation.
void Initialize(mojom::RendererClientAssociatedPtrInfo client,
base::Optional<std::vector<mojom::DemuxerStreamPtr>> streams,
const base::Optional<GURL>& media_url,
const base::Optional<GURL>& first_party_for_cookies,
const InitializeCallback& callback) final;
void Flush(const FlushCallback& callback) final;
void StartPlayingFrom(base::TimeDelta time_delta) final;
void SetPlaybackRate(double playback_rate) final;
void SetVolume(float volume) final;
void SetCdm(int32_t cdm_id, const SetCdmCallback& callback) final;
void InitiateScopedSurfaceRequest(
const InitiateScopedSurfaceRequestCallback& callback) final;
void set_bad_message_cb(base::Closure bad_message_cb) {
bad_message_cb_ = bad_message_cb;
enum State {
// RendererClient implementation.
void OnError(PipelineStatus status) final;
void OnEnded() final;
void OnStatisticsUpdate(const PipelineStatistics& stats) final;
void OnBufferingStateChange(BufferingState state) final;
void OnWaitingForDecryptionKey() final;
void OnVideoNaturalSizeChange(const gfx::Size& size) final;
void OnVideoOpacityChange(bool opaque) final;
void OnDurationChange(base::TimeDelta duration) final;
// Called when the MediaResourceShim is ready to go (has a config,
// pipe handle, etc) and can be handed off to a renderer for use.
void OnStreamReady(const base::Callback<void(bool)>& callback);
// Called when |audio_renderer_| initialization has completed.
void OnRendererInitializeDone(const base::Callback<void(bool)>& callback,
PipelineStatus status);
// Periodically polls the media time from the renderer and notifies the client
// if the media time has changed since the last update.
// If |force| is true, the client is notified even if the time is unchanged.
// If |range| is true, an interpolation time range is reported.
void UpdateMediaTime(bool force);
void CancelPeriodicMediaTimeUpdates();
void SchedulePeriodicMediaTimeUpdates();
// Callback executed once Flush() completes.
void OnFlushCompleted(const FlushCallback& callback);
// Callback executed once SetCdm() completes.
void OnCdmAttached(scoped_refptr<ContentDecryptionModule> cdm,
const base::Callback<void(bool)>& callback,
bool success);
base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context_;
State state_;
double playback_rate_;
std::unique_ptr<MediaResource> media_resource_;
base::RepeatingTimer time_update_timer_;
base::TimeDelta last_media_time_;
mojom::RendererClientAssociatedPtr client_;
// Hold a reference to the CDM set on the |renderer_| so that the CDM won't be
// destructed while the |renderer_| is still using it.
scoped_refptr<ContentDecryptionModule> cdm_;
// Audio and Video sinks.
// May be null if underlying |renderer_| does not use them.
scoped_refptr<AudioRendererSink> audio_sink_;
std::unique_ptr<VideoRendererSink> video_sink_;
// Note: Destroy |renderer_| first to avoid access violation into other
// members, e.g. |media_resource_|, |cdm_|, |audio_sink_|, and
// |video_sink_|.
// Must use "media::" because "Renderer" is ambiguous.
std::unique_ptr<media::Renderer> renderer_;
// Registers a new request in the ScopedSurfaceRequestManager.
// Returns the token to be used to fulfill the request.
InitiateSurfaceRequestCB initiate_surface_request_cb_;
// Callback to be called when an invalid or unexpected message is received.
// TODO(tguilbert): Revisit how to do InitiateScopedSurfaceRequest() so that
// we can eliminate this callback. See
base::Closure bad_message_cb_;
base::WeakPtr<MojoRendererService> weak_this_;
base::WeakPtrFactory<MojoRendererService> weak_factory_;
} // namespace media