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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef SERVICES_MEDIA_FRAMEWORK_MOJO_MOJO_CONSUMER_H_ | |
| 6 #define SERVICES_MEDIA_FRAMEWORK_MOJO_MOJO_CONSUMER_H_ | |
| 7 | |
| 8 #include "base/single_thread_task_runner.h" | |
| 9 #include "base/task_runner.h" | |
| 10 #include "mojo/common/binding_set.h" | |
| 11 #include "mojo/services/media/common/cpp/mapped_shared_buffer.h" | |
| 12 #include "mojo/services/media/common/interfaces/media_transport.mojom.h" | |
| 13 #include "services/media/framework/models/active_source.h" | |
| 14 | |
| 15 namespace mojo { | |
| 16 namespace media { | |
| 17 | |
| 18 // Implements MediaConsumer::Flush on behalf of MediaConsumer to avoid name | |
| 19 // conflict with Part::Flush. | |
| 20 class MojoConsumerMediaConsumer : public MediaConsumer { | |
| 21 // MediaConsumer implementation. | |
| 22 void Flush(const FlushCallback& callback) override; | |
| 23 | |
| 24 // Implements MediaConsumer::Flush. | |
| 25 virtual void MediaConsumerFlush(const FlushCallback& callback) = 0; | |
| 26 }; | |
| 27 | |
| 28 // Implements MediaConsumer to receive a stream from across mojo. | |
| 29 class MojoConsumer : public MojoConsumerMediaConsumer, public ActiveSource { | |
| 30 public: | |
| 31 using PrimeRequestedCallback = std::function<void(const PrimeCallback&)>; | |
| 32 using FlushRequestedCallback = std::function<void(const FlushCallback&)>; | |
| 33 | |
| 34 static std::shared_ptr<MojoConsumer> Create() { | |
| 35 return std::shared_ptr<MojoConsumer>(new MojoConsumer()); | |
| 36 } | |
| 37 | |
| 38 ~MojoConsumer() override; | |
| 39 | |
| 40 // Adds a binding. | |
| 41 void AddBinding(InterfaceRequest<MediaConsumer> consumer); | |
| 42 | |
| 43 // Sets a callback signalling that a prime has been requested from the | |
| 44 // MediaConsumer client. | |
| 45 void SetPrimeRequestedCallback(const PrimeRequestedCallback& callback); | |
| 46 | |
| 47 // Sets a callback signalling that a flush has been requested from the | |
| 48 // MediaConsumer client. | |
| 49 void SetFlushRequestedCallback(const FlushRequestedCallback& callback); | |
| 50 | |
| 51 // MediaConsumer implementation. | |
| 52 void SetBuffer(ScopedSharedBufferHandle buffer, | |
| 53 const SetBufferCallback& callback) override; | |
| 54 | |
| 55 void SendPacket(MediaPacketPtr packet, | |
| 56 const SendPacketCallback& callback) override; | |
| 57 | |
| 58 void Prime(const PrimeCallback& callback) override; | |
| 59 | |
| 60 void MediaConsumerFlush(const FlushCallback& callback) override; | |
| 61 | |
| 62 // ActiveSource implementation. | |
| 63 bool can_accept_allocator() const override; | |
| 64 | |
| 65 void set_allocator(PayloadAllocator* allocator) override; | |
| 66 | |
| 67 void SetSupplyCallback(const SupplyCallback& supply_callback) override; | |
| 68 | |
| 69 void SetDownstreamDemand(Demand demand) override; | |
| 70 | |
| 71 private: | |
| 72 MojoConsumer(); | |
| 73 | |
| 74 // Specialized packet implementation. | |
| 75 class PacketImpl : public Packet { | |
| 76 public: | |
| 77 static PacketPtr Create( | |
| 78 MediaPacketPtr media_packet, | |
| 79 const SendPacketCallback& callback, | |
| 80 scoped_refptr<base::SingleThreadTaskRunner> task_runner, | |
| 81 const MappedSharedBuffer& buffer) { | |
| 82 return PacketPtr( | |
| 83 new PacketImpl(media_packet.Pass(), callback, task_runner, buffer)); | |
| 84 } | |
| 85 | |
| 86 protected: | |
| 87 void Release() override; | |
| 88 | |
| 89 private: | |
| 90 PacketImpl(MediaPacketPtr media_packet, | |
| 91 const SendPacketCallback& callback, | |
| 92 scoped_refptr<base::SingleThreadTaskRunner> task_runner, | |
| 93 const MappedSharedBuffer& buffer); | |
| 94 | |
| 95 ~PacketImpl() override; | |
| 96 | |
| 97 static void RunCallback(const SendPacketCallback& callback); | |
| 98 | |
| 99 MediaPacketPtr media_packet_; | |
| 100 const SendPacketCallback callback_; | |
| 101 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | |
| 102 }; | |
| 103 | |
| 104 BindingSet<MediaConsumer> bindings_; | |
| 105 PrimeRequestedCallback prime_requested_callback_; | |
| 106 FlushRequestedCallback flush_requested_callback_; | |
| 107 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | |
| 108 MappedSharedBuffer buffer_; | |
| 109 SupplyCallback supply_callback_; | |
| 110 }; | |
| 111 | |
| 112 } // namespace media | |
| 113 } // namespace mojo | |
| 114 | |
| 115 #endif // SERVICES_MEDIA_FRAMEWORK_MOJO_MOJO_CONSUMER_H_ | |
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