save-pixels - npm Package Compare versions

Comparing version 2.1.0 to 2.2.0

package.json

 {
   "name": "save-pixels",
-  "version": "2.1.0",
+  "version": "2.2.0",
   "description": "Saves an ndarray as an image to a file",
@@ -12,2 +12,3 @@ "main": "save-pixels.js",
     "contentstream": "^1.0.0",
+    "gif-encoder": "~0.4.1",
     "jpeg-js": "0.0.4",
@@ -14,0 +15,0 @@ "pngjs": "~0.4.0-alpha",

save-pixels.js

 "use strict"
 
 var ContentStream = require("contentstream")
+var GifEncoder = require("gif-encoder")
 var jpegJs = require("jpeg-js")
@@ -8,5 +9,14 @@ var PNG = require("pngjs").PNG
 
-function handleData(array, data) {
+function handleData(array, data, frame) {
   var i, j, ptr = 0, c
-  if(array.shape.length === 3) {
+  if(array.shape.length === 4) {
+    for(j=0; j<array.shape[2]; ++j) {
+      for(i=0; i<array.shape[1]; ++i) {
+        data[ptr++] = array.get(frame,i,j,0)>>>0
+        data[ptr++] = array.get(frame,i,j,1)>>>0
+        data[ptr++] = array.get(frame,i,j,2)>>>0
+        data[ptr++] = array.get(frame,i,j,3)>>>0
+      }
+    }
+  } else if(array.shape.length === 3) {
     if(array.shape[2] === 3) {
@@ -85,2 +95,17 @@ for(j=0; j<array.shape[1]; ++j) {
 
+    case "GIF":
+    case ".GIF":
+      var frames = array.shape.length === 4 ? array.shape[0] : 1
+      var width = array.shape.length === 4 ? array.shape[1] : array.shape[0]
+      var height = array.shape.length === 4 ? array.shape[2] : array.shape[1]
+      var data = new Buffer(width * height * 4)
+      var gif = new GifEncoder(width, height)
+      gif.writeHeader()
+      for (var i = 0; i < frames; i++) {
+        data = handleData(array, data, i)
+        gif.addFrame(data)
+      }
+      gif.finish()
+      return gif
+
     case "PNG":
@@ -87,0 +112,0 @@ case ".PNG":

No alert changes

Improved metrics

Total package byte prevSize

6909

increased by15.55%

Lines of code

127

increased by23.3%

Worsened metrics

Dependency count

5

increased by25%

Dependency changes

• + Addedgif-encoder@~0.4.1

• + Addedgif-encoder@0.4.3(transitive)

• + Addedreadable-stream@1.1.14(transitive)