Switch to stable Rust

Nightly is no longer necessary for wee_alloc, so we don't need to rely on unstable versions of Rust anymore.

As a bonus, this reduces size of each Rust-related Docker image by >1 GB:
 - `squoosh-rotate`: 2.94GB -> 1.87GB
 - `squoosh-resize`: 3.09GB -> 2.02GB
 - `squoosh-hqx`: 3.13GB -> 2.06GB

codecs/hqx/Dockerfile

@@ -10,8 +10,7 @@ RUN cmake .. -DCMAKE_INSTALL_PREFIX=/opt/wabt && \
   make install
 
 FROM rust
-RUN rustup install nightly && \
+RUN rustup target add wasm32-unknown-unknown && \
-  rustup target add --toolchain nightly wasm32-unknown-unknown && \
   cargo install wasm-pack
 
 COPY --from=0 /opt/wabt /opt/wabt

codecs/hqx/build.sh

@@ -6,8 +6,7 @@ echo "============================================="
 echo "Compiling wasm"
 echo "============================================="
 (
-  rustup run nightly \
+  wasm-pack build --target no-modules
-    wasm-pack build --target no-modules
   wasm-strip pkg/squooshhqx_bg.wasm
   echo "Optimising Wasm so it doesn't break Chrome (this takes like 10-15mins. get a cup of tea)"
   echo "Once https://crbug.com/974804 is fixed, we can remove this step"

codecs/hqx/pkg/squooshhqx.js

@@ -19,16 +19,16 @@
         return ptr;
     }
 
-    function getArrayU32FromWasm(ptr, len) {
+    let cachegetInt32Memory = null;
-        return getUint32Memory().subarray(ptr / 4, ptr / 4 + len);
+    function getInt32Memory() {
+        if (cachegetInt32Memory === null || cachegetInt32Memory.buffer !== wasm.memory.buffer) {
+            cachegetInt32Memory = new Int32Array(wasm.memory.buffer);
+        }
+        return cachegetInt32Memory;
     }
 
-    let cachedGlobalArgumentPtr = null;
+    function getArrayU32FromWasm(ptr, len) {
-    function globalArgumentPtr() {
+        return getUint32Memory().subarray(ptr / 4, ptr / 4 + len);
-        if (cachedGlobalArgumentPtr === null) {
-            cachedGlobalArgumentPtr = wasm.__wbindgen_global_argument_ptr();
-        }
-        return cachedGlobalArgumentPtr;
     }
     /**
     * @param {Uint32Array} input_image
@@ -38,18 +38,12 @@
     * @returns {Uint32Array}
     */
     __exports.resize = function(input_image, input_width, input_height, factor) {
-        const ptr0 = passArray32ToWasm(input_image);
+        const retptr = 8;
-        const len0 = WASM_VECTOR_LEN;
+        const ret = wasm.resize(retptr, passArray32ToWasm(input_image), WASM_VECTOR_LEN, input_width, input_height, factor);
-        const retptr = globalArgumentPtr();
+        const memi32 = getInt32Memory();
-        wasm.resize(retptr, ptr0, len0, input_width, input_height, factor);
+        const v0 = getArrayU32FromWasm(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1]).slice();
-        const mem = getUint32Memory();
+        wasm.__wbindgen_free(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1] * 4);
-        const rustptr = mem[retptr / 4];
+        return v0;
-        const rustlen = mem[retptr / 4 + 1];
-
-        const realRet = getArrayU32FromWasm(rustptr, rustlen).slice();
-        wasm.__wbindgen_free(rustptr, rustlen * 4);
-        return realRet;
-
     };
 
     function init(module) {

codecs/hqx/pkg/squooshhqx_bg.d.ts

@@ -1,6 +1,5 @@
 /* tslint:disable */
 export const memory: WebAssembly.Memory;
-export function resize(a: number, b: number, c: number, d: number, e: number, f: number): void;
-export function __wbindgen_global_argument_ptr(): number;
 export function __wbindgen_malloc(a: number): number;
 export function __wbindgen_free(a: number, b: number): void;
+export function resize(a: number, b: number, c: number, d: number, e: number, f: number): void;

codecs/resize/Dockerfile

@@ -9,8 +9,7 @@ RUN cmake .. -DCMAKE_INSTALL_PREFIX=/opt/wabt && \
   make install
 
 FROM rust
-RUN rustup install nightly && \
+RUN rustup target add wasm32-unknown-unknown && \
-  rustup target add --toolchain nightly wasm32-unknown-unknown && \
   cargo install wasm-pack
 
 COPY --from=0 /opt/wabt /opt/wabt

codecs/resize/build.sh

@@ -6,8 +6,7 @@ echo "============================================="
 echo "Compiling wasm"
 echo "============================================="
 (
-  rustup run nightly \
+  wasm-pack build --target no-modules
-    wasm-pack build --target no-modules
   wasm-strip pkg/resize_bg.wasm
 )
 echo "============================================="

codecs/rotate/Dockerfile

@@ -9,8 +9,7 @@ RUN cmake .. -DCMAKE_INSTALL_PREFIX=/opt/wabt && \
   make install
 
 FROM rust
-RUN rustup install nightly && \
+RUN rustup target add wasm32-unknown-unknown
-  rustup target add --toolchain nightly wasm32-unknown-unknown
 
 COPY --from=0 /opt/wabt /opt/wabt
 ENV PATH="/opt/wabt/bin:${PATH}"

codecs/rotate/build.sh

@@ -6,8 +6,7 @@ echo "============================================="
 echo "Compiling wasm"
 echo "============================================="
 (
-  rustup run nightly \
+  cargo build \
-    cargo build \
     --target wasm32-unknown-unknown \
     --release
   cp target/wasm32-unknown-unknown/release/rotate.wasm .