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| 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) | |
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