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
17IPC_ENUM_TRAITS_MAX_VALUE(content::VideoCaptureState,
18                          content::VIDEO_CAPTURE_STATE_LAST)
19
20IPC_STRUCT_TRAITS_BEGIN(media::VideoCaptureParams)
21  IPC_STRUCT_TRAITS_MEMBER(requested_format)
22  IPC_STRUCT_TRAITS_MEMBER(allow_resolution_change)
23IPC_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.
30IPC_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.
35IPC_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.
43IPC_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.
48IPC_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.
56IPC_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.
65IPC_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.
71IPC_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|.
77IPC_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|.
83IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Pause,
84                     int /* device_id */)
85
86// Close the video capture specified by |device_id|.
87IPC_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.
92IPC_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|.
98IPC_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|.
103IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceFormatsInUse,
104                     int /* device_id */,
105                     media::VideoCaptureSessionId /* session_id */)
106