Use piston_image instead of stb_image for decoding JPEGs

components/compositing/Cargo.toml

@@ -91,7 +91,7 @@ git = "https://github.com/servo/webrender"
 app_units = {version = "0.2.1", features = ["plugins"]}
 euclid = {version = "0.6.2", features = ["plugins"]}
 gleam = "0.2"
-image = "0.5.0"
+image = "0.7"
 log = "0.3"
 num = "0.1.24"
 serde = "0.6"

components/net_traits/Cargo.toml

@@ -23,10 +23,9 @@ path = "../plugins"
 heapsize = "0.3.0"
 heapsize_plugin = "0.1.2"
 hyper = { version = "0.7", features = [ "serde-serialization" ] }
-image = "0.5.0"
+image = "0.7"
 log = "0.3"
 serde = "0.6"
 serde_macros = "0.6"
-stb_image = "0.2"
 url = {version = "0.5.5", features = ["heap_size"]}
 websocket = "0.15.0"

components/net_traits/image/base.rs

@@ -4,9 +4,7 @@
 
 use ipc_channel::ipc::IpcSharedMemory;
 use piston_image::{self, DynamicImage, GenericImage, ImageFormat};
-use stb_image::image as stb_image2;
 use util::opts;
-use util::vec::byte_swap;
 
 pub use msg::constellation_msg::{Image, ImageMetadata, PixelFormat};
 
@@ -49,41 +47,7 @@ pub fn load_from_memory(buffer: &[u8]) -> Option<Image> {
             debug!("{}", msg);
             None
         }
-        Ok(ImageFormat::JPEG) => {
-            // For JPEG images, we use stb_image because piston_image does not yet support progressive
-            // JPEG.
-
-            // Can't remember why we do this. Maybe it's what cairo wants
-            static FORCE_DEPTH: usize = 4;
-
-            match stb_image2::load_from_memory_with_depth(buffer, FORCE_DEPTH, true) {
-                stb_image2::LoadResult::ImageU8(mut image) => {
-                    assert!(image.depth == 4);
-                    // handle gif separately because the alpha-channel has to be premultiplied
-                    if is_gif(buffer) {
-                        byte_swap_and_premultiply(&mut image.data);
-                    } else {
-                        byte_swap(&mut image.data);
-                    }
-                    Some(Image {
-                        width: image.width as u32,
-                        height: image.height as u32,
-                        format: PixelFormat::RGBA8,
-                        bytes: IpcSharedMemory::from_bytes(&image.data[..]),
-                        id: None,
-                    })
-                }
-                stb_image2::LoadResult::ImageF32(_image) => {
-                    debug!("HDR images not implemented");
-                    None
-                }
-                stb_image2::LoadResult::Error(e) => {
-                    debug!("stb_image failed: {}", e);
-                    None
-                }
-            }
-        }
-        _ => {
+        Ok(_) => {
             match piston_image::load_from_memory(buffer) {
                 Ok(image) => {
                     let mut rgba = match image {

components/net_traits/lib.rs

@@ -19,7 +19,6 @@ extern crate ipc_channel;
 extern crate log;
 extern crate msg;
 extern crate serde;
-extern crate stb_image;
 extern crate url;
 extern crate util;
 extern crate websocket;

components/script/Cargo.toml

@@ -74,7 +74,7 @@ heapsize = "0.3.0"
 heapsize_plugin = "0.1.2"
 html5ever = {version = "0.5.1", features = ["heap_size", "unstable"]}
 hyper = { version = "0.7", features = [ "serde-serialization" ] }
-image = "0.5.0"
+image = "0.7"
 libc = "0.2"
 log = "0.3"
 num = "0.1.24"

components/servo/Cargo.toml

@@ -18,7 +18,7 @@ doc = false
 bench = false
 
 [dev-dependencies]
-image = "0.5.0"
+image = "0.7"
 
 [dev-dependencies.gfx_tests]
 path = "../../tests/unit/gfx"

components/webdriver_server/Cargo.toml

@@ -26,7 +26,7 @@ git = "https://github.com/jgraham/webdriver-rust.git"
 git = "https://github.com/servo/ipc-channel"
 
 [dependencies]
-image = "0.5.0"
+image = "0.7"
 log = "0.3"
 hyper = "0.7"
 rustc-serialize = "0.3.4"

ports/cef/Cargo.toml

@@ -13,7 +13,6 @@ euclid = {version = "0.6.2", features = ["plugins"]}
 gleam = "0.2"
 libc = "0.2"
 log = "0.3"
-stb_image = "0.2"
 url = {version = "0.5.5", features = ["heap_size"]}
 
 [dependencies.servo]

ports/cef/lib.rs

@@ -40,7 +40,6 @@ extern crate msg;
 extern crate util;
 extern crate style;
 extern crate style_traits;
-extern crate stb_image;
 
 extern crate libc;
 extern crate url as std_url;