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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Protocol for communication between chromoting client and host.
syntax = "proto2";
option optimize_for = LITE_RUNTIME;
package remoting;
// A message that gets sent to the client after the client is connected to the
// host. It contains information that the client needs to know about the host.
// NEXT ID: 3
message InitClientMessage {
required int32 width = 1;
required int32 height = 2;
}
// A message to denote the beginning of an update stream. It will be followed
// by 0 or more PartialUpdateStream messages and then a EndUpdateStream message.
// NEXT ID: 1
message BeginUpdateStreamMessage {
}
// A message to denote the end of an update stream.
// NEXT ID: 1
message EndUpdateStreamMessage {
}
// Identifies how the image was encoded.
enum UpdateStreamEncoding {
EncodingNone = 0;
EncodingZlib = 1;
}
// Identifies the pixel format.
// Note that this list should match exactly the same as
// media::VideoFrame::Format in media/base/video_frame.h.
enum PixelFormat {
PixelFormatInvalid = 0;
PixelFormatRgb555 = 1;
PixelFormatRgb565 = 2;
PixelFormatRgb24 = 3;
PixelFormatRgb32 = 4;
PixelFormatRgba = 5;
PixelFormatYv12 = 6;
PixelFormatYv16 = 7;
PixelFormatEmpty = 8;
PixelFormatAscii = 9;
}
// A message that denotes the beginning of an updating rectangle in an update
// stream packet.
// NEXT ID: 6
message UpdateStreamBeginRect {
// X,Y coordinates (in screen pixels) for origin of this update.
required int32 x = 1;
required int32 y = 2;
// Width, height (in screen pixels) for this update.
required int32 width = 3;
required int32 height = 4;
// The encoding used for this image update.
optional UpdateStreamEncoding encoding = 5 [default=EncodingNone];
// The pixel format of this image.
optional PixelFormat pixel_format = 6 [default=PixelFormatRgb24];
}
// A message that contains partial data for updating an rectangle in an
// update stream packet.
// NEXT ID: 3
message UpdateStreamRectData {
// The sequence number of the partial data for updating a rectangle.
optional int32 sequence_number = 1 [default=0];
// The partial data for updating a rectangle.
required bytes data = 2;
}
// A message that denotes the end of an updating rectangle.
// NEXT ID: 1
message UpdateStreamEndRect {
}
// A message to denote a partial update stream.
// NEXT ID: 4
message UpdateStreamPacketMessage {
optional UpdateStreamBeginRect begin_rect = 1;
optional UpdateStreamRectData rect_data = 2;
optional UpdateStreamEndRect end_rect = 3;
}
// Defines the message that is sent from the host to the client.
// Only one of these messages should be present.
// NEXT ID: 5
message HostMessage {
optional InitClientMessage init_client= 1;
optional BeginUpdateStreamMessage begin_update_stream = 2;
optional EndUpdateStreamMessage end_update_stream = 3;
optional UpdateStreamPacketMessage update_stream_packet = 4;
}
// Defines a keyboard event.
// NEXT ID: 3
message KeyEvent {
// The POSIX key code.
required int32 key = 1;
required bool pressed = 2;
}
// Sets the position of the mouse cursor.
// The coordinate value is between [0 .. 1] which is relative to the
// dimension of the screen area.
// NEXT ID: 3
message MouseSetPositionEvent {
required float x = 1;
required float y = 2;
}
// Adjust the position of the mouse cursor by an offset.
// NEXT ID: 3
message MouseMoveEvent {
required int32 offset_x = 1;
required int32 offset_y = 2;
}
// Motion of the mouse wheel.
// NEXT ID: 3
message MouseWheelEvent {
required int32 offset_x = 1;
required int32 offset_y = 2;
}
// Mouse button is pressed down.
// NEXT ID: 2
message MouseDownEvent {
enum Button {
LEFT = 0;
MIDDLE = 1;
RIGHT = 2;
}
required Button button = 1;
}
// Mouse button is released.
// NEXT ID: 2
message MouseUpEvent {
enum Button {
LEFT = 0;
MIDDLE = 1;
RIGHT = 2;
}
required Button button = 1;
}
// Defines the message that is sent from the client to the host.
// Only one of these messages should be present.
// NEXT ID: 7
message ClientMessage {
optional KeyEvent key_event = 1;
optional MouseSetPositionEvent mouse_set_position_event = 2;
optional MouseMoveEvent mouse_move_event = 3;
optional MouseWheelEvent mouse_wheel_event = 4;
optional MouseDownEvent mouse_down_event = 5;
optional MouseUpEvent mouse_up_event = 6;
}
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