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 "gpu/command_buffer/common/mailbox_holder.h" 10 #include "ipc/ipc_message_macros.h" 11 #include "media/video/capture/video_capture_types.h" 12 13 #undef IPC_MESSAGE_EXPORT 14 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT 15 #define IPC_MESSAGE_START VideoCaptureMsgStart 16 17 IPC_ENUM_TRAITS_MAX_VALUE(content::VideoCaptureState, 18 content::VIDEO_CAPTURE_STATE_LAST) 19 20 IPC_STRUCT_TRAITS_BEGIN(media::VideoCaptureParams) 21 IPC_STRUCT_TRAITS_MEMBER(requested_format) 22 IPC_STRUCT_TRAITS_MEMBER(allow_resolution_change) 23 IPC_STRUCT_TRAITS_END() 24 25 // TODO(nick): device_id in these messages is basically just a route_id. We 26 // should shift to IPC_MESSAGE_ROUTED and use MessageRouter in the filter impls. 27 28 // Notify the renderer process about the state update such as 29 // Start/Pause/Stop. 30 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_StateChanged, 31 int /* device id */, 32 content::VideoCaptureState /* new state */) 33 34 // Tell the renderer process that a new buffer is allocated for video capture. 35 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer, 36 int /* device id */, 37 base::SharedMemoryHandle /* handle */, 38 int /* length */, 39 int /* buffer_id */) 40 41 // Tell the renderer process that it should release a buffer previously 42 // allocated by VideoCaptureMsg_NewBuffer. 43 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_FreeBuffer, 44 int /* device id */, 45 int /* buffer_id */) 46 47 // Tell the renderer process that a buffer is available from video capture. 48 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_BufferReady, 49 int /* device id */, 50 int /* buffer_id */, 51 media::VideoCaptureFormat /* format */, 52 base::TimeTicks /* timestamp */) 53 54 // Tell the renderer process that a texture mailbox buffer is available from 55 // video capture. 56 IPC_MESSAGE_CONTROL5(VideoCaptureMsg_MailboxBufferReady, 57 int /* device_id */, 58 int /* buffer_id */, 59 gpu::MailboxHolder /* mailbox_holder */, 60 media::VideoCaptureFormat /* format */, 61 base::TimeTicks /* timestamp */) 62 63 // Notify the renderer about a device's supported formats; this is a response 64 // to a VideoCaptureHostMsg_GetDeviceSupportedFormats request. 65 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceSupportedFormatsEnumerated, 66 int /* device_id */, 67 media::VideoCaptureFormats /* supported_formats */) 68 69 // Notify the renderer about a device's format(s) in use; this is a response 70 // to a VideoCaptureHostMsg_GetDeviceFormatInUse request. 71 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceFormatsInUseReceived, 72 int /* device_id */, 73 media::VideoCaptureFormats /* formats_in_use */) 74 75 // Start a video capture as |device_id|, a new id picked by the renderer 76 // process. The session to be started is determined by |params.session_id|. 77 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Start, 78 int /* device_id */, 79 media::VideoCaptureSessionId, /* session_id */ 80 media::VideoCaptureParams /* params */) 81 82 // Pause the video capture specified by |device_id|. 83 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Pause, 84 int /* device_id */) 85 86 // Close the video capture specified by |device_id|. 87 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Stop, 88 int /* device_id */) 89 90 // Tell the browser process that the renderer has finished reading from 91 // a buffer previously delivered by VideoCaptureMsg_BufferReady. 92 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_BufferReady, 93 int /* device_id */, 94 int /* buffer_id */, 95 std::vector<uint32> /* syncpoints */) 96 97 // Get the formats supported by a device referenced by |capture_session_id|. 98 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceSupportedFormats, 99 int /* device_id */, 100 media::VideoCaptureSessionId /* session_id */) 101 102 // Get the format(s) in use by a device referenced by |capture_session_id|. 103 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceFormatsInUse, 104 int /* device_id */, 105 media::VideoCaptureSessionId /* session_id */) 106
