| // Copyright (c) 2012 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. |
| |
| // IPC messages for the audio. |
| // Multiply-included message file, hence no include guard. |
| |
| #include "base/basictypes.h" |
| #include "base/memory/shared_memory.h" |
| #include "base/sync_socket.h" |
| #include "content/common/content_export.h" |
| #include "content/common/media/media_param_traits.h" |
| #include "ipc/ipc_message_macros.h" |
| #include "media/audio/audio_buffers_state.h" |
| #include "media/audio/audio_input_ipc.h" |
| #include "media/audio/audio_output_ipc.h" |
| #include "media/audio/audio_parameters.h" |
| |
| #undef IPC_MESSAGE_EXPORT |
| #define IPC_MESSAGE_EXPORT CONTENT_EXPORT |
| #define IPC_MESSAGE_START AudioMsgStart |
| |
| IPC_ENUM_TRAITS_MAX_VALUE(media::AudioInputIPCDelegate::State, |
| media::AudioInputIPCDelegate::kStateLast) |
| |
| IPC_ENUM_TRAITS_MAX_VALUE(media::AudioOutputIPCDelegate::State, |
| media::AudioOutputIPCDelegate::kStateLast) |
| |
| IPC_STRUCT_BEGIN(AudioInputHostMsg_CreateStream_Config) |
| IPC_STRUCT_MEMBER(media::AudioParameters, params) |
| IPC_STRUCT_MEMBER(bool, automatic_gain_control) |
| IPC_STRUCT_MEMBER(uint32, shared_memory_count) |
| IPC_STRUCT_END() |
| |
| // Messages sent from the browser to the renderer. |
| |
| // Tell the renderer process that an audio stream has been created. |
| // The renderer process is given a shared memory handle for the audio data |
| // buffer it shares with the browser process. It is also given a SyncSocket that |
| // it uses to communicate with the browser process about the state of the |
| // buffered audio data. |
| #if defined(OS_WIN) |
| IPC_MESSAGE_CONTROL4(AudioMsg_NotifyStreamCreated, |
| int /* stream id */, |
| base::SharedMemoryHandle /* handle */, |
| base::SyncSocket::Handle /* socket handle */, |
| uint32 /* length */) |
| #else |
| IPC_MESSAGE_CONTROL4(AudioMsg_NotifyStreamCreated, |
| int /* stream id */, |
| base::SharedMemoryHandle /* handle */, |
| base::FileDescriptor /* socket handle */, |
| uint32 /* length */) |
| #endif |
| |
| // Tell the renderer process that an audio input stream has been created. |
| // The renderer process would be given a SyncSocket that it should read |
| // from from then on. It is also given number of segments in shared memory. |
| #if defined(OS_WIN) |
| IPC_MESSAGE_CONTROL5(AudioInputMsg_NotifyStreamCreated, |
| int /* stream id */, |
| base::SharedMemoryHandle /* handle */, |
| base::SyncSocket::Handle /* socket handle */, |
| uint32 /* length */, |
| uint32 /* segment count */) |
| #else |
| IPC_MESSAGE_CONTROL5(AudioInputMsg_NotifyStreamCreated, |
| int /* stream id */, |
| base::SharedMemoryHandle /* handle */, |
| base::FileDescriptor /* socket handle */, |
| uint32 /* length */, |
| uint32 /* segment count */) |
| #endif |
| |
| // Notification message sent from AudioRendererHost to renderer after an output |
| // device change has occurred. |
| IPC_MESSAGE_CONTROL3(AudioMsg_NotifyDeviceChanged, |
| int /* stream_id */, |
| int /* new_buffer_size */, |
| int /* new_sample_rate */) |
| |
| // Notification message sent from AudioRendererHost to renderer for state |
| // update after the renderer has requested a Create/Start/Close. |
| IPC_MESSAGE_CONTROL2(AudioMsg_NotifyStreamStateChanged, |
| int /* stream id */, |
| media::AudioOutputIPCDelegate::State /* new state */) |
| |
| // Notification message sent from browser to renderer for state update. |
| IPC_MESSAGE_CONTROL2(AudioInputMsg_NotifyStreamStateChanged, |
| int /* stream id */, |
| media::AudioInputIPCDelegate::State /* new state */) |
| |
| IPC_MESSAGE_CONTROL2(AudioInputMsg_NotifyStreamVolume, |
| int /* stream id */, |
| double /* volume */) |
| |
| // Messages sent from the renderer to the browser. |
| |
| // Request that is sent to the browser for creating an audio output stream. |
| // |render_view_id| is the routing ID for the render view producing the audio |
| // data. |
| IPC_MESSAGE_CONTROL5(AudioHostMsg_CreateStream, |
| int /* stream_id */, |
| int /* render_view_id */, |
| int /* render_frame_id */, |
| int /* session_id */, |
| media::AudioParameters /* params */) |
| |
| // Request that is sent to the browser for creating an audio input stream. |
| // |render_view_id| is the routing ID for the render view consuming the audio |
| // data. |
| IPC_MESSAGE_CONTROL4(AudioInputHostMsg_CreateStream, |
| int /* stream_id */, |
| int /* render_view_id */, |
| int /* session_id */, |
| AudioInputHostMsg_CreateStream_Config) |
| |
| // Start buffering and play the audio stream specified by stream_id. |
| IPC_MESSAGE_CONTROL1(AudioHostMsg_PlayStream, |
| int /* stream_id */) |
| |
| // Start recording the audio input stream specified by stream_id. |
| IPC_MESSAGE_CONTROL1(AudioInputHostMsg_RecordStream, |
| int /* stream_id */) |
| |
| // Pause the audio stream specified by stream_id. |
| IPC_MESSAGE_CONTROL1(AudioHostMsg_PauseStream, |
| int /* stream_id */) |
| |
| // Close an audio stream specified by stream_id. |
| IPC_MESSAGE_CONTROL1(AudioHostMsg_CloseStream, |
| int /* stream_id */) |
| |
| // Close an audio input stream specified by stream_id. |
| IPC_MESSAGE_CONTROL1(AudioInputHostMsg_CloseStream, |
| int /* stream_id */) |
| |
| // Set audio volume of the stream specified by stream_id. |
| // TODO(hclam): change this to vector if we have channel numbers other than 2. |
| IPC_MESSAGE_CONTROL2(AudioHostMsg_SetVolume, |
| int /* stream_id */, |
| double /* volume */) |
| |
| // Set audio volume of the input stream specified by stream_id. |
| IPC_MESSAGE_CONTROL2(AudioInputHostMsg_SetVolume, |
| int /* stream_id */, |
| double /* volume */) |