You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.0 KiB
46 lines
1.0 KiB
4 years ago
|
// decode gif buffer
|
||
|
|
'use strict'
|
||
|
|
|
||
|
|
var GifReader = require('omggif').GifReader
|
||
|
|
|
||
|
|
module.exports = function read (data, o) {
|
||
|
|
var reader = new GifReader(Buffer.from(data))
|
||
|
|
|
||
|
|
// TODO: handle multiframe gif
|
||
|
|
// if(reader.numFrames() > 0) {
|
||
|
|
// var nshape = [reader.numFrames(), reader.height, reader.width, 4]
|
||
|
|
// try {
|
||
|
|
// var ndata = new Uint8Array(nshape[0] * nshape[1] * nshape[2] * nshape[3])
|
||
|
|
// } catch(err) {
|
||
|
|
// cb(err)
|
||
|
|
// return
|
||
|
|
// }
|
||
|
|
|
||
|
|
// var result = ndarray(ndata, nshape)
|
||
|
|
// try {
|
||
|
|
// for(var i=0; i < reader.numFrames(); ++i) {
|
||
|
|
// reader.decodeAndBlitFrameRGBA(i, ndata.subarray(
|
||
|
|
// result.index(i, 0, 0, 0),
|
||
|
|
// result.index(i+1, 0, 0, 0)))
|
||
|
|
// }
|
||
|
|
// } catch(err) {
|
||
|
|
// cb(err)
|
||
|
|
// return
|
||
|
|
// }
|
||
|
|
|
||
|
|
// cb(null, result.transpose(0,2,1))
|
||
|
|
// }
|
||
|
|
|
||
|
|
// single frame gif
|
||
|
|
var pixels = new Uint8Array(reader.width * reader.height * 4)
|
||
|
|
|
||
|
|
reader.decodeAndBlitFrameRGBA(0, pixels)
|
||
|
|
|
||
|
|
return {
|
||
|
|
data: pixels,
|
||
|
|
width: reader.width,
|
||
|
|
height: reader.height
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|