blob: 781e01dd45781c6033cb758cdb4cff6e03a0b3f1 [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 CdmContextRef;
class MediaResourceShim;
class MojoCdmServiceContext;
class Renderer;
// A mojom::Renderer implementation that use a media::Renderer to render
// media streams.
class MEDIA_MOJO_EXPORT MojoRendererService : 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(
MojoCdmServiceContext* mojo_cdm_service_context,
std::unique_ptr<media::Renderer> renderer,
const 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.
MojoRendererService(MojoCdmServiceContext* mojo_cdm_service_context,
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::DemuxerStreamPtrInfo>> streams,
const base::Optional<GURL>& media_url,
const base::Optional<GURL>& site_for_cookies,
InitializeCallback callback) final;
void Flush(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, SetCdmCallback callback) final;
void InitiateScopedSurfaceRequest(
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 OnWaiting(WaitingReason reason) final;
void OnAudioConfigChange(const AudioDecoderConfig& config) final;
void OnVideoConfigChange(const VideoDecoderConfig& config) 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(base::OnceCallback<void(bool)> callback);
// Called when |audio_renderer_| initialization has completed.
void OnRendererInitializeDone(base::OnceCallback<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(FlushCallback callback);
// Callback executed once SetCdm() completes.
void OnCdmAttached(base::OnceCallback<void(bool)> callback, bool success);
MojoCdmServiceContext* const mojo_cdm_service_context_ = nullptr;
State state_;
double playback_rate_;
std::unique_ptr<MediaResource> media_resource_;
base::RepeatingTimer time_update_timer_;
base::TimeDelta last_media_time_;
mojom::RendererClientAssociatedPtr client_;
// Holds the CdmContextRef to keep the CdmContext alive for the lifetime of
// the |renderer_|.
std::unique_ptr<CdmContextRef> cdm_context_ref_;
// Note: Destroy |renderer_| first to avoid access violation into other
// members, e.g. |media_resource_| and |cdm_|.
// 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