services/surfaceflinger/layerproto/layers.proto

// Definitions for SurfaceFlinger layers.

syntax = "proto3";
option optimize_for = LITE_RUNTIME;
package android.surfaceflinger;

// Contains a list of all layers.
message LayersProto {
  repeated LayerProto layers = 1;
}

// Must match definition in the IComposerClient HAL
enum HwcCompositionType {
    // Invalid composition type
    INVALID = 0;
    // Layer was composited by the client into the client target buffer
    CLIENT = 1;
    // Layer was composited by the device through hardware overlays
    DEVICE = 2;
    // Layer was composited by the device using a color
    SOLID_COLOR = 3;
    // Similar to DEVICE, but the layer position may have been asynchronously set
    // through setCursorPosition
    CURSOR = 4;
    // Layer was composited by the device via a sideband stream.
    SIDEBAND = 5;
}

// Information about each layer.
message LayerProto {
  // unique id per layer.
  int32 id = 1;
  // unique name per layer.
  string name = 2;
  // list of children this layer may have. May be empty.
  repeated int32 children = 3;
  // list of layers that are z order relative to this layer.
  repeated int32 relatives = 4;
  // The type of layer, ex Color, Layer
  string type = 5;
  RegionProto transparent_region = 6;
  RegionProto visible_region = 7;
  RegionProto damage_region = 8;
  uint32 layer_stack = 9;
  // The layer's z order. Can be z order in layer stack, relative to parent,
  // or relative to another layer specified in zOrderRelative.
  int32 z = 10;
  // The layer's position on the display.
  PositionProto position = 11;
  // The layer's requested position.
  PositionProto requested_position = 12;
  // The layer's size.
  SizeProto size = 13;
  // The layer's crop in it's own bounds.
  RectProto crop = 14;
  // The layer's crop in it's parent's bounds.
  RectProto final_crop = 15 [deprecated=true];
  bool is_opaque = 16;
  bool invalidate = 17;
  string dataspace = 18;
  string pixel_format = 19;
  // The layer's actual color.
  ColorProto color = 20;
  // The layer's requested color.
  ColorProto requested_color = 21;
  // Can be any combination of
  //    hidden = 0x01
  //    opaque = 0x02,
  //    secure = 0x80,
  uint32 flags = 22;
  // The layer's actual transform
  TransformProto transform = 23;
  // The layer's requested transform.
  TransformProto requested_transform = 24;
  // The parent layer. This value can be null if there is no parent.
  int32 parent = 25;
  // The layer that this layer has a z order relative to. This value can be null.
  int32 z_order_relative_of = 26;
  // This value can be null if there's nothing to draw.
  ActiveBufferProto active_buffer = 27;
  // The number of frames available.
  int32 queued_frames = 28;
  bool refresh_pending = 29;
  // The layer's composer backend destination frame
  RectProto hwc_frame = 30;
  // The layer's composer backend source crop
  FloatRectProto hwc_crop = 31;
  // The layer's composer backend transform
  int32 hwc_transform = 32;
  int32 window_type = 33 [deprecated=true];
  int32 app_id = 34 [deprecated=true];
  // The layer's composition type
  HwcCompositionType hwc_composition_type = 35;
  // If it's a buffer layer, indicate if the content is protected
  bool is_protected = 36;
  // Current frame number being rendered.
  uint64 curr_frame = 37;
  // A list of barriers that the layer is waiting to update state.
  repeated BarrierLayerProto barrier_layer = 38;
  // If active_buffer is not null, record its transform.
  TransformProto buffer_transform = 39;
  int32 effective_scaling_mode = 40;
  // Layer's corner radius.
  float corner_radius = 41;
  // Metadata map. May be empty.
  map<int32, bytes> metadata = 42;

  TransformProto effective_transform = 43;
  FloatRectProto source_bounds = 44;
  FloatRectProto bounds = 45;
  FloatRectProto screen_bounds = 46;

  InputWindowInfoProto input_window_info = 47;

  // Crop used to draw the rounded corner.
  FloatRectProto corner_radius_crop = 48;

  // length of the shadow to draw around the layer, it may be set on the
  // layer or set by a parent layer.
  float shadow_radius = 49;
  ColorTransformProto color_transform = 50;

  bool is_relative_of = 51;
  // Layer's background blur radius in pixels.
  int32 background_blur_radius = 52;
}

message PositionProto {
  float x = 1;
  float y = 2;
}

message SizeProto {
  int32 w = 1;
  int32 h = 2;
}

message TransformProto {
  float dsdx = 1;
  float dtdx = 2;
  float dsdy = 3;
  float dtdy = 4;
  int32 type = 5;
}

message RegionProto {
  reserved 1;  // Previously: uint64 id
  repeated RectProto rect = 2;
}

message RectProto {
  int32 left   = 1;
  int32 top    = 2;
  int32 right  = 3;
  int32 bottom = 4;
}

message FloatRectProto {
  float left = 1;
  float top = 2;
  float right = 3;
  float bottom = 4;
}

message ActiveBufferProto {
  uint32 width = 1;
  uint32 height = 2;
  uint32 stride = 3;
  int32 format = 4;
}

message ColorProto {
  float r = 1;
  float g = 2;
  float b = 3;
  float a = 4;
}

message BarrierLayerProto {
  // layer id the barrier is waiting on.
  int32 id = 1;
  // frame number the barrier is waiting on.
  uint64 frame_number = 2;
}

message InputWindowInfoProto {
    uint32 layout_params_flags = 1;
    uint32 layout_params_type = 2;
    RectProto frame = 3;
    RegionProto touchable_region = 4;

    uint32 surface_inset = 5;
    bool visible = 6;
    bool can_receive_keys = 7;
    bool has_focus = 8;
    bool has_wallpaper = 9;

    float global_scale_factor = 10;
    float window_x_scale = 11;
    float window_y_scale = 12;

    uint32 crop_layer_id = 13;
    bool replace_touchable_region_with_crop = 14;
    RectProto touchable_region_crop = 15;
}

message ColorTransformProto {
  // This will be a 4x4 matrix of float values
  repeated float val = 1;
}