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// 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 <stdint.h>
#include <string>
#include "base/memory/shared_memory.h"
#include "base/sync_socket.h"
#include "content/common/content_export.h"
#include "ipc/ipc_message_macros.h"
#include "media/audio/audio_input_ipc.h"
#include "media/audio/audio_output_ipc.h"
#include "media/base/ipc/media_param_traits.h"
#include "media/gpu/ipc/common/media_param_traits.h"
#include "url/origin.h"
#undef IPC_MESSAGE_EXPORT
#define IPC_MESSAGE_EXPORT CONTENT_EXPORT
#define IPC_MESSAGE_START AudioMsgStart
IPC_ENUM_TRAITS_MAX_VALUE(media::AudioInputIPCDelegateState,
media::AUDIO_INPUT_IPC_DELEGATE_STATE_LAST)
IPC_ENUM_TRAITS_MAX_VALUE(media::OutputDeviceStatus,
media::OUTPUT_DEVICE_STATUS_MAX)
IPC_STRUCT_BEGIN(AudioInputHostMsg_CreateStream_Config)
IPC_STRUCT_MEMBER(media::AudioParameters, params)
IPC_STRUCT_MEMBER(bool, automatic_gain_control)
IPC_STRUCT_MEMBER(uint32_t, shared_memory_count)
IPC_STRUCT_END()
// Messages sent from the browser to the renderer.
// Tell the renderer process that an audio output device has been authorized
// for a given stream. The renderer is given the output parameters for the
// authorized device.
IPC_MESSAGE_CONTROL4(AudioMsg_NotifyDeviceAuthorized,
int /* stream id */,
media::OutputDeviceStatus /* device_status */,
media::AudioParameters /* output parameters */,
std::string /* matched_device_id */)
// 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.
IPC_MESSAGE_CONTROL4(
AudioMsg_NotifyStreamCreated,
int /* stream id */,
base::SharedMemoryHandle /* handle */,
base::SyncSocket::TransitDescriptor /* socket descriptor */,
uint32_t /* length */)
// 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.
IPC_MESSAGE_CONTROL5(
AudioInputMsg_NotifyStreamCreated,
int /* stream id */,
base::SharedMemoryHandle /* handle */,
base::SyncSocket::TransitDescriptor /* socket descriptor */,
uint32_t /* length */,
uint32_t /* segment count */)
// Notification message sent from AudioRendererHost to renderer for state
// update on error.
IPC_MESSAGE_CONTROL1(AudioMsg_NotifyStreamError, int /* stream id */)
// Notification message sent from browser to renderer for state update.
IPC_MESSAGE_CONTROL2(AudioInputMsg_NotifyStreamStateChanged,
int /* stream id */,
media::AudioInputIPCDelegateState /* new state */)
IPC_MESSAGE_CONTROL2(AudioInputMsg_NotifyStreamVolume,
int /* stream id */,
double /* volume */)
// Messages sent from the renderer to the browser.
// Message sent to the browser to request the use of an audio output
// device. |render_frame_id| is the routing ID for the RenderFrame producing
// the audio data.
IPC_MESSAGE_CONTROL5(AudioHostMsg_RequestDeviceAuthorization,
int /* stream_id */,
int /* render_frame_id */,
int /* session_id */,
std::string /* device_id */,
url::Origin /* security_origin */)
// Request that is sent to the browser for creating an audio output stream.
IPC_MESSAGE_CONTROL3(AudioHostMsg_CreateStream,
int /* stream_id */,
int /* render_frame_id */,
media::AudioParameters /* params */)
// Request that is sent to the browser for creating an audio input stream.
// |render_frame_id| is the routing ID for the RenderFrame consuming the audio
// data.
IPC_MESSAGE_CONTROL4(AudioInputHostMsg_CreateStream,
int /* stream_id */,
int /* render_frame_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 */)
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