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Side by Side Diff: content/common/media/encoded_video_source_messages.h

Issue 16320005: Define EncodedVideoSource and RtcCapturedEncodingVideoCapturer. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Addressing Ami's comments - part 5. Created 7 years, 6 months ago
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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 "ipc/ipc_message_macros.h"
6 #include "media/video/encoded_video_source.h"
7 #include "media/video/video_encode_types.h"
8
9 #undef IPC_MESSAGE_EXPORT
10 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
11 #define IPC_MESSAGE_START EncodedVideoSourceMsgStart
12
13 #if !defined(OS_ANDROID)
14 IPC_ENUM_TRAITS(media::VideoCodec)
15 #endif // !defined(OS_ANDROID)
16
17 IPC_STRUCT_TRAITS_BEGIN(media::VideoEncodingConfig)
18 IPC_STRUCT_TRAITS_MEMBER(codec_type)
19 IPC_STRUCT_TRAITS_MEMBER(codec_name)
20 IPC_STRUCT_TRAITS_MEMBER(max_resolution)
21 IPC_STRUCT_TRAITS_MEMBER(max_frames_per_second)
22 IPC_STRUCT_TRAITS_MEMBER(max_bitrate)
23 IPC_STRUCT_TRAITS_END()
24
25 IPC_STRUCT_TRAITS_BEGIN(media::RuntimeVideoEncodingParameters)
26 IPC_STRUCT_TRAITS_MEMBER(target_bitrate)
27 IPC_STRUCT_TRAITS_MEMBER(max_bitrate)
28 IPC_STRUCT_TRAITS_MEMBER(frames_per_second)
29 IPC_STRUCT_TRAITS_END()
30
31 IPC_STRUCT_TRAITS_BEGIN(media::VideoEncodingParameters)
32 IPC_STRUCT_TRAITS_MEMBER(codec_name)
33 IPC_STRUCT_TRAITS_MEMBER(resolution)
34 IPC_STRUCT_TRAITS_MEMBER(runtime_params)
35 IPC_STRUCT_TRAITS_END()
36
37 IPC_STRUCT_TRAITS_BEGIN(media::BufferEncodingMetadata)
38 IPC_STRUCT_TRAITS_MEMBER(timestamp)
39 IPC_STRUCT_TRAITS_MEMBER(key_frame)
40 IPC_STRUCT_TRAITS_END()
41
42 // Need to typedef BitstreamBufferMap in order to prevent the IPC message macros
43 // from choking on the comma.
44 typedef std::map<int, base::SharedMemoryHandle> BitstreamBufferMap;
45
46 //------------------------------------------------------------------------------
47 // Renderer Source Messages
48 // These are messages from the Renderer to the Browser process.
49
50 // Queries the encoding capabilities for the device. A successful request
51 // results in EncoderVideoSourceMessage_CapabilitiesAvailable message.
52 IPC_MESSAGE_CONTROL1(EncodedVideoSourceHostMsg_GetCapabilities,
53 int /* device_id */)
54
55 // Opens a bitstream with specific parameters. A successful request results in
56 // beginning of streaming and EncoderVideoSourceMsg_BitstreamOpened message.
57 // A failed request triggers EncodedVideoSourceMsg_BitstreamClosed message. As
58 // this set of messages is designed to work with existing device, device_id is
59 // determined on the basis which device is providing the encoded video source
60 // functionality. Only one bitstream can be opened for a given device.
61 IPC_MESSAGE_CONTROL2(EncodedVideoSourceHostMsg_OpenBitstream,
62 int /* device_id */,
63 media::VideoEncodingParameters /* params */)
64
65 // Stops streaming a bitstream. When Browser has finalized the bitstream it will
66 // trigger EncodedVideoSourceMsg_BitstreamClosed message back to Renderer.
67 // Renderer must be prepared to receive EncodedVideoSourceMsg_BitstreamReady
68 // messages until it receives the EncodedVideoSourceMsg_BitstreamClosed message.
69 IPC_MESSAGE_CONTROL1(EncodedVideoSourceHostMsg_CloseBitstream,
70 int /* device_id */)
71
72 // Sets a stream's bitstream configuration. Will always result in
73 // EncodedVideoSourceMsg_BitstreamConfigChanged message containing
74 // currently active parameters, regardless of whether this call succeeded or
75 // not.
76 IPC_MESSAGE_CONTROL2(EncodedVideoSourceHostMsg_TryConfigureBitstream,
77 int /* device_id */,
78 media::RuntimeVideoEncodingParameters /* params */)
79
80 // Notifies that the data within a buffer has been processed and it can be
81 // reused to encode upcoming bitstream.
82 IPC_MESSAGE_CONTROL2(EncodedVideoSourceHostMsg_BitstreamBufferConsumed,
83 int /* device_id */,
84 int /* buffer_id */)
85
86 //------------------------------------------------------------------------------
87 // Renderer Messages
88 // These are messages from the Browser to the Renderer process.
89
90 // Reports the encoding capabilities of the device.
91 IPC_MESSAGE_CONTROL2(EncodedVideoSourceMsg_CapabilitiesAvailable,
92 int /* device id */,
93 media::VideoEncodingCapabilities /* capabilities */)
94
95 // Acknowledges a request to open an encoded video bitstream. When this message
96 // occurs, bitstream can be considered to be streaming, and Renderer should be
97 // ready to start accepting EncodedVideoSourceMsg_BitstreamReady messages and
98 // buffers contained within them. Shared memory buffers used to deliver the
99 // bitstream are assigned with buffer ids as specified by the buffers parameter.
100 IPC_MESSAGE_CONTROL3(EncodedVideoSourceMsg_BitstreamOpened,
101 int /* device_id */,
102 media::VideoEncodingParameters /* params */,
103 BitstreamBufferMap /* buffers */)
104
105 // Acknowledges a request to close an encoded video bitstream.
106 IPC_MESSAGE_CONTROL1(EncodedVideoSourceMsg_BitstreamClosed,
107 int /* device_id */)
108
109 // Informs the clients of the current encoding parameters, regardless of whether
110 // the previous request to change them has been successful or not. This is
111 // called usually in response to EncodedVideoSourceHostMsg_TryConfigureBitstream
112 // at runtime, but can occur also as a result of config change initiated by
113 // encoder or other clients in the system, e.g. if there are multiple clients
114 // and bitstream config change is requested from one client, all clients should
115 // be prepared to handle the configuration change.
116 IPC_MESSAGE_CONTROL2(EncodedVideoSourceMsg_BitstreamConfigChanged,
117 int /* device_id */,
118 media::RuntimeVideoEncodingParameters /* current_params */)
119
120 // Indicates that a bitstream buffer is available for the stream. The value of
121 // |size| indicates the amount of valid bitstream data (in bytes).
122 IPC_MESSAGE_CONTROL4(EncodedVideoSourceMsg_BitstreamReady,
123 int /* device_id */,
124 int /* buffer_id */,
125 int /* size */,
126 media::BufferEncodingMetadata /* metadata */)
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