1 // Copyright 2014 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 // IPC messages for device motion. 6 // Multiply-included message file, hence no include guard. 7 8 #include "base/memory/shared_memory.h" 9 #include "ipc/ipc_message_macros.h" 10 #include "ipc/ipc_param_traits.h" 11 #include "ipc/ipc_platform_file.h" 12 13 #define IPC_MESSAGE_START DeviceMotionMsgStart 14 15 // Asks the browser process to activate Device Motion sensors if necessary. 16 IPC_MESSAGE_CONTROL0(DeviceMotionHostMsg_StartPolling) 17 18 // The browser process asynchronously returns the shared memory handle that will 19 // hold the data from the hardware sensors. 20 // See device_motion_hardware_buffer.h for a description of how 21 // synchronization is handled. 22 IPC_MESSAGE_CONTROL1(DeviceMotionMsg_DidStartPolling, 23 base::SharedMemoryHandle /* handle */) 24 25 // Notifies the browser process that the renderer process is not using the 26 // Device Motion data anymore. The number of Starts should match the number 27 // of Stops. 28 IPC_MESSAGE_CONTROL0(DeviceMotionHostMsg_StopPolling) 29