1 // Copyright (c) 2012 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 #include "base/memory/shared_memory.h" 6 #include "content/common/content_export.h" 7 #include "content/common/media/video_capture.h" 8 #include "content/public/common/common_param_traits.h" 9 #include "ipc/ipc_message_macros.h" 10 #include "media/video/capture/video_capture_types.h" 11 12 #undef IPC_MESSAGE_EXPORT 13 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT 14 #define IPC_MESSAGE_START VideoCaptureMsgStart 15 16 IPC_ENUM_TRAITS(content::VideoCaptureState) 17 18 // Notify the renderer process about the state update such as 19 // Start/Pause/Stop. 20 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_StateChanged, 21 int /* device id */, 22 content::VideoCaptureState /* new state */) 23 24 // Tell the renderer process that a new buffer is allocated for video capture. 25 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer, 26 int /* device id */, 27 base::SharedMemoryHandle /* handle */, 28 int /* length */, 29 int /* buffer_id */) 30 31 // Tell the renderer process that a buffer is available from video capture. 32 IPC_MESSAGE_CONTROL3(VideoCaptureMsg_BufferReady, 33 int /* device id */, 34 int /* buffer_id */, 35 base::Time /* timestamp */) 36 37 // Tell the renderer process the width, height and frame rate the camera use. 38 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceInfo, 39 int /* device_id */, 40 media::VideoCaptureParams) 41 42 // Tell the renderer process the newly changed width, height and frame rate 43 // the video capture device will use. 44 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceInfoChanged, 45 int /* device_id */, 46 media::VideoCaptureParams) 47 48 // Start the video capture specified by |device_id|. 49 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_Start, 50 int /* device_id */, 51 media::VideoCaptureParams) 52 53 // Pause the video capture specified by |device_id|. 54 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Pause, 55 int /* device_id */) 56 57 // Close the video capture specified by |device_id|. 58 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Stop, 59 int /* device_id */) 60 61 // Tell the browser process that the video frame buffer |handle| is ready for 62 // device |device_id| to fill up. 63 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_BufferReady, 64 int /* device_id */, 65 int /* buffer_id */) 66
