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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef SERVICES_MEDIA_FRAMEWORK_MOJO_PUSH_PRODUCER_BASE_H_ | 5 #ifndef SERVICES_MEDIA_FRAMEWORK_MOJO_MOJO_PACKET_PRODUCER_H_ |
| 6 #define SERVICES_MEDIA_FRAMEWORK_MOJO_PUSH_PRODUCER_BASE_H_ | 6 #define SERVICES_MEDIA_FRAMEWORK_MOJO_MOJO_PACKET_PRODUCER_H_ |
| 7 | 7 |
| 8 #include "base/single_thread_task_runner.h" | 8 #include "base/single_thread_task_runner.h" |
| 9 #include "base/synchronization/lock.h" | 9 #include "base/synchronization/lock.h" |
| 10 #include "mojo/common/binding_set.h" | 10 #include "mojo/common/binding_set.h" |
| 11 #include "mojo/services/media/common/interfaces/media_transport.mojom.h" | 11 #include "mojo/services/media/common/interfaces/media_transport.mojom.h" |
| 12 #include "services/media/framework/models/active_sink.h" | 12 #include "services/media/framework/models/active_sink.h" |
| 13 #include "services/media/framework_mojo/mojo_allocator.h" | 13 #include "services/media/framework_mojo/mojo_allocator.h" |
| 14 | 14 |
| 15 namespace mojo { | 15 namespace mojo { |
| 16 namespace media { | 16 namespace media { |
| 17 | 17 |
| 18 // Implements MediaProducer to forward a stream across mojo. | 18 // Implements MediaPacketProducer to forward a stream across mojo. |
| 19 class MojoProducer : public MediaProducer, public ActiveSink { | 19 class MojoPacketProducer : public MediaPacketProducer, public ActiveSink { |
| 20 public: | 20 public: |
| 21 using PrimeConnectionCallback = mojo::Callback<void()>; | 21 using PrimeConnectionCallback = mojo::Callback<void()>; |
| 22 using FlushConnectionCallback = mojo::Callback<void()>; | 22 using FlushConnectionCallback = mojo::Callback<void()>; |
| 23 | 23 |
| 24 static std::shared_ptr<MojoProducer> Create() { | 24 static std::shared_ptr<MojoPacketProducer> Create() { |
| 25 return std::shared_ptr<MojoProducer>(new MojoProducer()); | 25 return std::shared_ptr<MojoPacketProducer>(new MojoPacketProducer()); |
| 26 } | 26 } |
| 27 | 27 |
| 28 ~MojoProducer() override; | 28 ~MojoPacketProducer() override; |
| 29 | 29 |
| 30 // Adds a binding. | 30 // Adds a binding. |
| 31 void AddBinding(InterfaceRequest<MediaProducer> producer); | 31 void AddBinding(InterfaceRequest<MediaPacketProducer> producer); |
| 32 | 32 |
| 33 // Initiates demand to provide downstream parties with enough content to | 33 // Initiates demand to provide downstream parties with enough content to |
| 34 // start without starving. | 34 // start without starving. |
| 35 void PrimeConnection(const PrimeConnectionCallback& callback); | 35 void PrimeConnection(const PrimeConnectionCallback& callback); |
| 36 | 36 |
| 37 // Unprimes and tells the connected consumer to flush. | 37 // Unprimes and tells the connected consumer to flush. |
| 38 void FlushConnection(const FlushConnectionCallback& callback); | 38 void FlushConnection(const FlushConnectionCallback& callback); |
| 39 | 39 |
| 40 // ActiveSink implementation. | 40 // ActiveSink implementation. |
| 41 PayloadAllocator* allocator() override; | 41 PayloadAllocator* allocator() override; |
| 42 | 42 |
| 43 void SetDemandCallback(const DemandCallback& demand_callback) override; | 43 void SetDemandCallback(const DemandCallback& demand_callback) override; |
| 44 | 44 |
| 45 Demand SupplyPacket(PacketPtr packet) override; | 45 Demand SupplyPacket(PacketPtr packet) override; |
| 46 | 46 |
| 47 // MediaProducer implementation. | 47 // MediaPacketProducer implementation. |
| 48 void Connect(InterfaceHandle<MediaConsumer> consumer, | 48 void Connect(InterfaceHandle<MediaPacketConsumer> consumer, |
| 49 const ConnectCallback& callback) override; | 49 const ConnectCallback& callback) override; |
| 50 | 50 |
| 51 void Disconnect() override; | 51 void Disconnect() override; |
| 52 | 52 |
| 53 private: | 53 private: |
| 54 MojoProducer(); | 54 MojoPacketProducer(); |
| 55 | 55 |
| 56 // Sends a packet to the consumer. | 56 // Sends a packet to the consumer. |
| 57 // TODO(dalesat): Don't use a raw pointer, if possible. | 57 // TODO(dalesat): Don't use a raw pointer, if possible. |
| 58 void SendPacket(Packet* packet_raw_ptr, MediaPacketPtr media_packet); | 58 void SendPacket(Packet* packet_raw_ptr, MediaPacketPtr media_packet); |
| 59 | 59 |
| 60 // Creates a MediaPacket from a Packet. | 60 // Creates a MediaPacket from a Packet. |
| 61 MediaPacketPtr CreateMediaPacket(const PacketPtr& packet); | 61 MediaPacketPtr CreateMediaPacket(const PacketPtr& packet); |
| 62 | 62 |
| 63 // Allocates from the shared buffer. | 63 // Allocates from the shared buffer. |
| 64 MojoAllocator mojo_allocator_; | 64 MojoAllocator mojo_allocator_; |
| 65 | 65 |
| 66 BindingSet<MediaProducer> bindings_; | 66 BindingSet<MediaPacketProducer> bindings_; |
| 67 MediaConsumerPtr consumer_; | 67 MediaPacketConsumerPtr consumer_; |
| 68 | 68 |
| 69 mutable base::Lock lock_; | 69 mutable base::Lock lock_; |
| 70 // THE FIELDS BELOW SHOULD ONLY BE ACCESSED WITH lock_ TAKEN. | 70 // THE FIELDS BELOW SHOULD ONLY BE ACCESSED WITH lock_ TAKEN. |
| 71 DemandCallback demand_callback_; | 71 DemandCallback demand_callback_; |
| 72 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | 72 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
| 73 // TODO(dalesat): Base this logic on presentation time or duration. | 73 // TODO(dalesat): Base this logic on presentation time or duration. |
| 74 uint32_t max_pushes_outstanding_ = 0; | 74 uint32_t max_pushes_outstanding_ = 0; |
| 75 uint32_t current_pushes_outstanding_ = 0; | 75 uint32_t current_pushes_outstanding_ = 0; |
| 76 // THE FIELDS ABOVE SHOULD ONLY BE ACCESSED WITH lock_ TAKEN. | 76 // THE FIELDS ABOVE SHOULD ONLY BE ACCESSED WITH lock_ TAKEN. |
| 77 }; | 77 }; |
| 78 | 78 |
| 79 } // namespace media | 79 } // namespace media |
| 80 } // namespace mojo | 80 } // namespace mojo |
| 81 | 81 |
| 82 #endif // SERVICES_MEDIA_FRAMEWORK_MOJO_PUSH_PRODUCER_BASE_H_ | 82 #endif // SERVICES_MEDIA_FRAMEWORK_MOJO_MOJO_PACKET_PRODUCER_H_ |
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