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| 1 // Copyright (c) 2017 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 CONTENT_RENDERER_PEPPER_PEPPER_AUDIO_OUTPUT_HOST_H_ |
| 6 #define CONTENT_RENDERER_PEPPER_PEPPER_AUDIO_OUTPUT_HOST_H_ |
| 7 |
| 8 #include <stddef.h> |
| 9 #include <stdint.h> |
| 10 |
| 11 #include <memory> |
| 12 #include <string> |
| 13 |
| 14 #include "base/compiler_specific.h" |
| 15 #include "base/macros.h" |
| 16 #include "base/memory/shared_memory.h" |
| 17 #include "base/sync_socket.h" |
| 18 #include "content/public/renderer/plugin_instance_throttler.h" |
| 19 #include "content/renderer/pepper/pepper_device_enumeration_host_helper.h" |
| 20 #include "ipc/ipc_platform_file.h" |
| 21 #include "ppapi/c/ppb_audio_config.h" |
| 22 #include "ppapi/host/host_message_context.h" |
| 23 #include "ppapi/host/resource_host.h" |
| 24 |
| 25 namespace content { |
| 26 class PepperPlatformAudioOutputDev; |
| 27 class RendererPpapiHostImpl; |
| 28 |
| 29 class PepperAudioOutputHost : public ppapi::host::ResourceHost, |
| 30 public PluginInstanceThrottler::Observer { |
| 31 public: |
| 32 PepperAudioOutputHost(RendererPpapiHostImpl* host, |
| 33 PP_Instance instance, |
| 34 PP_Resource resource); |
| 35 ~PepperAudioOutputHost() override; |
| 36 |
| 37 int32_t OnResourceMessageReceived( |
| 38 const IPC::Message& msg, |
| 39 ppapi::host::HostMessageContext* context) override; |
| 40 |
| 41 // Called when the stream is created. |
| 42 void StreamCreated(base::SharedMemoryHandle shared_memory_handle, |
| 43 size_t shared_memory_size, |
| 44 base::SyncSocket::Handle socket); |
| 45 void StreamCreationFailed(); |
| 46 void SetVolume(double volume); |
| 47 |
| 48 private: |
| 49 int32_t OnOpen(ppapi::host::HostMessageContext* context, |
| 50 const std::string& device_id, |
| 51 PP_AudioSampleRate sample_rate, |
| 52 uint32_t sample_frame_count); |
| 53 int32_t OnStartOrStop(ppapi::host::HostMessageContext* context, |
| 54 bool playback); |
| 55 int32_t OnClose(ppapi::host::HostMessageContext* context); |
| 56 |
| 57 void OnOpenComplete(int32_t result, |
| 58 base::SharedMemoryHandle shared_memory_handle, |
| 59 size_t shared_memory_size, |
| 60 base::SyncSocket::Handle socket_handle); |
| 61 |
| 62 int32_t GetRemoteHandles( |
| 63 const base::SyncSocket& socket, |
| 64 const base::SharedMemory& shared_memory, |
| 65 IPC::PlatformFileForTransit* remote_socket_handle, |
| 66 base::SharedMemoryHandle* remote_shared_memory_handle); |
| 67 |
| 68 void Close(); |
| 69 |
| 70 void SendOpenReply(int32_t result); |
| 71 |
| 72 // PluginInstanceThrottler::Observer implementation. |
| 73 void OnThrottleStateChange() override; |
| 74 |
| 75 // Starts the deferred playback and unsubscribes from the throttler. |
| 76 void StartDeferredPlayback(); |
| 77 |
| 78 // Non-owning pointer. |
| 79 RendererPpapiHostImpl* renderer_ppapi_host_; |
| 80 |
| 81 ppapi::host::ReplyMessageContext open_context_; |
| 82 |
| 83 // Audio output object that we delegate audio IPC through. |
| 84 // We don't own this pointer but are responsible for calling Shutdown on it. |
| 85 PepperPlatformAudioOutputDev* audio_output_; |
| 86 |
| 87 // Stream is playing, but throttled due to Plugin Power Saver. |
| 88 bool playback_throttled_; |
| 89 |
| 90 PepperDeviceEnumerationHostHelper enumeration_helper_; |
| 91 |
| 92 DISALLOW_COPY_AND_ASSIGN(PepperAudioOutputHost); |
| 93 }; |
| 94 |
| 95 } // namespace content |
| 96 |
| 97 #endif // CONTENT_RENDERER_PEPPER_PEPPER_AUDIO_OUTPUT_HOST_H_ |
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