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compositor: Move WebRender-ish messages and types to webrender_traits
(#32315)
* Move WebRender related types to `webrender_traits` This refactor moves several WebRender related types from `compositing_traits`, `script_traits` and `net_traits` crates to the `webrender_traits` crate. This change also moves the `Image` type and associated function out of `net_traits` and into the `pixels` crate. Co-authored-by: Martin Robinson <mrobinson@igalia.com> Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com> * Move `script_traits::WebrenderIpcSender` to `webrender_traits::WebRenderScriptApi` --------- Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com> Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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53 changed files with 666 additions and 617 deletions
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@ -39,3 +39,4 @@ servo_url = { path = "../../url" }
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url = { workspace = true }
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uuid = { workspace = true }
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webrender_api = { workspace = true }
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webrender_traits = { workspace = true }
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@ -1,121 +0,0 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use std::fmt;
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use image::ImageFormat;
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use ipc_channel::ipc::IpcSharedMemory;
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use log::debug;
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use malloc_size_of_derive::MallocSizeOf;
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use pixels::PixelFormat;
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use serde::{Deserialize, Serialize};
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use webrender_api::ImageKey;
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use crate::image_cache::CorsStatus;
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#[derive(Clone, Deserialize, MallocSizeOf, Serialize)]
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pub struct Image {
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pub width: u32,
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pub height: u32,
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pub format: PixelFormat,
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#[ignore_malloc_size_of = "Defined in ipc-channel"]
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pub bytes: IpcSharedMemory,
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#[ignore_malloc_size_of = "Defined in webrender_api"]
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pub id: Option<ImageKey>,
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pub cors_status: CorsStatus,
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}
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impl fmt::Debug for Image {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(
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f,
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"Image {{ width: {}, height: {}, format: {:?}, ..., id: {:?} }}",
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self.width, self.height, self.format, self.id
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)
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}
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}
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#[derive(Clone, Debug, Deserialize, Eq, MallocSizeOf, PartialEq, Serialize)]
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pub struct ImageMetadata {
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pub width: u32,
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pub height: u32,
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}
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// FIXME: Images must not be copied every frame. Instead we should atomically
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// reference count them.
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pub fn load_from_memory(buffer: &[u8], cors_status: CorsStatus) -> Option<Image> {
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if buffer.is_empty() {
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return None;
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}
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let image_fmt_result = detect_image_format(buffer);
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match image_fmt_result {
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Err(msg) => {
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debug!("{}", msg);
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None
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},
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Ok(_) => match image::load_from_memory(buffer) {
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Ok(image) => {
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let mut rgba = image.into_rgba8();
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pixels::rgba8_byte_swap_colors_inplace(&mut rgba);
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Some(Image {
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width: rgba.width(),
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height: rgba.height(),
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format: PixelFormat::BGRA8,
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bytes: IpcSharedMemory::from_bytes(&rgba),
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id: None,
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cors_status,
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})
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},
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Err(e) => {
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debug!("Image decoding error: {:?}", e);
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None
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},
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},
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}
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}
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// https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img
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pub fn detect_image_format(buffer: &[u8]) -> Result<ImageFormat, &str> {
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if is_gif(buffer) {
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Ok(ImageFormat::Gif)
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} else if is_jpeg(buffer) {
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Ok(ImageFormat::Jpeg)
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} else if is_png(buffer) {
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Ok(ImageFormat::Png)
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} else if is_webp(buffer) {
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Ok(ImageFormat::WebP)
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} else if is_bmp(buffer) {
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Ok(ImageFormat::Bmp)
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} else if is_ico(buffer) {
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Ok(ImageFormat::Ico)
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} else {
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Err("Image Format Not Supported")
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}
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}
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fn is_gif(buffer: &[u8]) -> bool {
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buffer.starts_with(b"GIF87a") || buffer.starts_with(b"GIF89a")
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}
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fn is_jpeg(buffer: &[u8]) -> bool {
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buffer.starts_with(&[0xff, 0xd8, 0xff])
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}
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fn is_png(buffer: &[u8]) -> bool {
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buffer.starts_with(&[0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A])
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}
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fn is_bmp(buffer: &[u8]) -> bool {
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buffer.starts_with(&[0x42, 0x4D])
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}
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fn is_ico(buffer: &[u8]) -> bool {
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buffer.starts_with(&[0x00, 0x00, 0x01, 0x00])
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}
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fn is_webp(buffer: &[u8]) -> bool {
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buffer.starts_with(b"RIFF") && buffer.len() >= 14 && &buffer[8..14] == b"WEBPVP"
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}
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@ -7,12 +7,13 @@ use std::sync::Arc;
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use ipc_channel::ipc::IpcSender;
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use log::debug;
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use malloc_size_of_derive::MallocSizeOf;
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use pixels::{Image, ImageMetadata};
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use serde::{Deserialize, Serialize};
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use servo_url::{ImmutableOrigin, ServoUrl};
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use webrender_traits::WebRenderNetApi;
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use crate::image::base::{Image, ImageMetadata};
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use crate::request::CorsSettings;
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use crate::{FetchResponseMsg, WebrenderIpcSender};
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use crate::FetchResponseMsg;
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// ======================================================================
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// Aux structs and enums.
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@ -98,7 +99,7 @@ pub enum ImageCacheResult {
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}
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pub trait ImageCache: Sync + Send {
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fn new(webrender_api: WebrenderIpcSender) -> Self
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fn new(webrender_api: WebRenderNetApi) -> Self
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where
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Self: Sized;
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@ -140,14 +141,3 @@ pub trait ImageCache: Sync + Send {
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/// Inform the image cache about a response for a pending request.
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fn notify_pending_response(&self, id: PendingImageId, action: FetchResponseMsg);
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}
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/// Whether this response passed any CORS checks, and is thus safe to read from
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/// in cross-origin environments.
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#[derive(Clone, Copy, Debug, Deserialize, MallocSizeOf, PartialEq, Serialize)]
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pub enum CorsStatus {
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/// The response is either same-origin or cross-origin but passed CORS checks.
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Safe,
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/// The response is cross-origin and did not pass CORS checks. It is unsafe
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/// to expose pixel data to the requesting environment.
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Unsafe,
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}
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@ -16,7 +16,6 @@ use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
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use ipc_channel::router::ROUTER;
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use ipc_channel::Error as IpcError;
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use lazy_static::lazy_static;
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use log::warn;
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use malloc_size_of::malloc_size_of_is_0;
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use malloc_size_of_derive::MallocSizeOf;
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use mime::Mime;
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@ -25,7 +24,6 @@ use rustls::Certificate;
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use serde::{Deserialize, Serialize};
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use servo_rand::RngCore;
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use servo_url::{ImmutableOrigin, ServoUrl};
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use webrender_api::{ImageData, ImageDescriptor, ImageKey};
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use crate::filemanager_thread::FileManagerThreadMsg;
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use crate::request::{Request, RequestBuilder};
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@ -41,15 +39,6 @@ pub mod request;
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pub mod response;
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pub mod storage_thread;
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/// Image handling.
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///
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/// It may be surprising that this goes in the network crate as opposed to the graphics crate.
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/// However, image handling is generally very integrated with the network stack (especially where
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/// caching is involved) and as a result it must live in here.
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pub mod image {
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pub mod base;
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}
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/// An implementation of the [Fetch specification](https://fetch.spec.whatwg.org/)
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pub mod fetch {
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pub mod headers;
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@ -829,38 +818,6 @@ pub fn http_percent_encode(bytes: &[u8]) -> String {
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percent_encoding::percent_encode(bytes, HTTP_VALUE).to_string()
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}
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#[derive(Deserialize, Serialize)]
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pub enum NetToCompositorMsg {
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AddImage(ImageKey, ImageDescriptor, ImageData),
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GenerateImageKey(IpcSender<ImageKey>),
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}
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#[derive(Clone, Deserialize, Serialize)]
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pub struct WebrenderIpcSender(IpcSender<NetToCompositorMsg>);
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impl WebrenderIpcSender {
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pub fn new(sender: IpcSender<NetToCompositorMsg>) -> Self {
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Self(sender)
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}
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pub fn generate_image_key(&self) -> ImageKey {
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let (sender, receiver) = ipc::channel().unwrap();
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self.0
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.send(NetToCompositorMsg::GenerateImageKey(sender))
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.expect("error sending image key generation");
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receiver.recv().expect("error receiving image key result")
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}
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pub fn add_image(&self, key: ImageKey, descriptor: ImageDescriptor, data: ImageData) {
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if let Err(e) = self
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.0
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.send(NetToCompositorMsg::AddImage(key, descriptor, data))
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{
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warn!("Error sending image update: {}", e);
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}
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}
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}
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lazy_static! {
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pub static ref PRIVILEGED_SECRET: u32 = servo_rand::ServoRng::default().next_u32();
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}
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@ -1,28 +0,0 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use net_traits::image::base::detect_image_format;
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#[test]
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fn test_supported_images() {
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let gif1 = [b'G', b'I', b'F', b'8', b'7', b'a'];
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let gif2 = [b'G', b'I', b'F', b'8', b'9', b'a'];
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let jpeg = [0xff, 0xd8, 0xff];
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let png = [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A];
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let webp = [
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b'R', b'I', b'F', b'F', 0x01, 0x02, 0x03, 0x04, b'W', b'E', b'B', b'P', b'V', b'P',
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];
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let bmp = [0x42, 0x4D];
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let ico = [0x00, 0x00, 0x01, 0x00];
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let junk_format = [0x01, 0x02, 0x03, 0x04, 0x05];
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assert!(detect_image_format(&gif1).is_ok());
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assert!(detect_image_format(&gif2).is_ok());
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assert!(detect_image_format(&jpeg).is_ok());
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assert!(detect_image_format(&png).is_ok());
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assert!(detect_image_format(&webp).is_ok());
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assert!(detect_image_format(&bmp).is_ok());
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assert!(detect_image_format(&ico).is_ok());
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assert!(detect_image_format(&junk_format).is_err());
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}
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