jay-peg - npm Package Compare versions

Comparing version 1.1.0 to 1.1.1

package.json

 {
   "name": "jay-peg",
   "description": "Performant JPEG decoder",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "type": "module",
@@ -6,0 +6,0 @@ "license": "MIT",

README.md

@@ -100,12 +100,19 @@ # jay-peg
 
-Performance is a key focus of `jay-peg``. In a benchmark test using a 2448×3264, 2.2MB JPEG image, the decoding speed was measured as follows:
+Performance is a key focus of `jay-peg`. 4 sizes of images were benchmarked:
 
+- `small`: 300 × 150, 8KB image
+- `medium`: 800 × 600, 70KB image
+- `large`: 1920 × 1080, 332KB image
+- `huge`: 2448×3264, 2.2MB image
+
+For each of these, the decoding speed was measured as follows:
+
 ```
-Benchmarked: small:  x 11,597 ops/sec ±0.60% (95 runs sampled)
-Benchmarked: medium:  x 11,219 ops/sec ±0.20% (98 runs sampled)
-Benchmarked: large:  x 7,744 ops/sec ±0.27% (100 runs sampled)
-Benchmarked: huge:  x 2,019 ops/sec ±0.36% (96 runs sampled)
+Benchmarked: small:  x 13,393 ops/sec ±4.77% (96 runs sampled)
+Benchmarked: medium:  x 12,894 ops/sec ±0.10% (99 runs sampled)
+Benchmarked: large:  x 9,241 ops/sec ±0.25% (99 runs sampled)
+Benchmarked: huge:  x 2,672 ops/sec ±0.12% (100 runs sampled)
 ```
 
-It's worth noting that the performance is significantly improved on smaller and simpler images.
+_Measures were taken in an MacBook Air 2024, Apple M3 w/16GB of RAM._
 
@@ -112,0 +119,0 @@ ## License

src/markers/utils.js

@@ -14,17 +14,7 @@ export const readUInt8 = (array, offset) => {
 export const readUInt32BE = (array, offset) => {
-  return (
-    (array[offset] << 24) |
-    (array[offset + 1] << 16) |
-    (array[offset + 2] << 8) |
-    array[offset + 3]
-  );
+  return readInt32BE(array, offset) >>> 0;
 };
 
 export const readUInt32LE = (array, offset) => {
-  return (
-    array[offset] |
-    (array[offset + 1] << 8) |
-    (array[offset + 2] << 16) |
-    (array[offset + 3] << 24)
-  );
+  return readInt32LE(array, offset) >>> 0;
 };
@@ -59,7 +49,17 @@
 export const readInt32BE = (array, offset) => {
-  return readUInt32BE(array, offset) | 0;
+  return (
+    (array[offset] << 24) |
+    (array[offset + 1] << 16) |
+    (array[offset + 2] << 8) |
+    array[offset + 3]
+  );
 };
 
 export const readInt32LE = (array, offset) => {
-  return readUInt32LE(array, offset) | 0;
+  return (
+    array[offset] |
+    (array[offset + 1] << 8) |
+    (array[offset + 2] << 16) |
+    (array[offset + 3] << 24)
+  );
 };

No alert changes

Improved metrics

Total package byte prevSize

66245

increased by0.2%

Number of lines in readme file

121

increased by6.14%

No dependency changes