[英]canvas.toDataURL to img src
I recently downloaded an open source webcam to gif script and when the gif is created it saves as a dataurl. 我最近将一个开放源网络摄像头下载到gif脚本,当创建gif时,它另存为dataurl。 Is their a way I can change this?
他们可以改变我的方式吗? I would rather it save in a folder on the server and be something like
http://example.com/folder/image.gif
我希望它保存在服务器上的文件夹中,并且类似
http://example.com/folder/image.gif
Code: 码:
*global GIFEncoder,encode64*/
var encoder = new GIFEncoder(),
video = document.querySelector('video'),
canvas = document.querySelector('canvas'),
ctx = canvas.getContext('2d'),
localMediaStream = null,
snapshotPause = 0,
recording = true,
framesPause = 120,
maxFrames = 28,
totalFrames = 0,
t;
encoder.setSize(320, 240);
encoder.setRepeat(0);
encoder.setDelay(framesPause);
encoder.setQuality(90);
window.URL = window.URL || window.webkitURL;
navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
if (navigator.getUserMedia) {
navigator.getUserMedia({
audio: true,
video: true
}, function (stream) {
$('#start-image, #start-fake').hide();
$('#video, #start').show();
video.src = window.URL.createObjectURL(stream);
localMediaStream = stream;
}, function (e) {
console.log('Error:', e);
}
);
} else {
console.log('not supported');
}
function snapshot() {
if (localMediaStream) {
ctx.drawImage(video, 0, 0, 320, 240);
encoder.addFrame(ctx);
var image = $('<img />').attr('src', canvas.toDataURL('image/gif'));
$('#thumbs').append(image);
totalFrames++;
if (totalFrames === maxFrames) {
recordingEnd();
}
}
}
function recordingEnd() {
var binaryGif = encoder.stream().getData(),
dataUrl = 'data:image/gif;base64,' + encode64(binaryGif),
gif = $('<img />').attr('src', dataUrl);
totalFrames = 0;
recording = !recording;
$('#start').html('Start');
clearInterval(t);
$('#indicator').hide();
encoder.finish();
$('#result-gif').html('').append(gif);
overlayShow('preview');
//b64 = encode64(binaryGif);
}
function overlayShow(panel) {
$('.panel').hide();
$('#' + panel).show();
$('#overlay-bg').show();
$('#overlay').show();
}
function overlayHide() {
$('#overlay-bg').hide();
$('#overlay').hide();
}
$('#start').click(function () {
if (recording) {
recording = !recording;
$('#thumbs-holder-close').show();
$('#thumbs-holder').animate({
'margin-left': '320px'
}, 300);
$('#thumbs').html('');
encoder.start();
$('#indicator').show().animate({
width: '100%'
}, snapshotPause, function () {
$('#indicator').css({
'width': '0'
});
});
t = setInterval(function () {
snapshot();
$('#indicator').animate({
width: '100%'
}, snapshotPause, function () {
$('#indicator').css({
'width': '0'
});
});
}, snapshotPause);
$(this).html('Stop');
} else {
recordingEnd();
}
});
$('#thumbs-holder-close').click(function () {
$(this).hide();
$('#thumbs-holder').animate({
'margin-left': 0
}, 300);
});
$('#overlay-close').click(function () {
overlayHide();
});
$('.new').click(function () {
overlayHide();
});
$('#showSettings').click(function () {
overlayShow('settings');
});
$('input[type=range]').change(function () {
var id = $(this).attr('id'),
val = $(this).val();
$(this).next().html(val);
window[id] = parseInt(val);
if (id === 'framesPause') {
framesPause = val;
encoder.setDelay(framesPause);
}
});
$('#save').click(function () {
$.ajax({
url: 'images/save.php',
method: 'POST',
data: {
image: b64
},
dataType: 'json',
success: function(data) {
var a = $('<a />').attr('href', "images/" + data.name).html('permalink');
$('#url').append(a);
},
error: function(err) {
console.log(err);
}
});
});
##Convert your dataUrl into Blobs
##将dataUrl转换为Blob
function dataURLtoBlob(dataURL) { // Decode the dataURL var binary = atob(dataURL.split(',')[1]); // Create 8-bit unsigned array var array = []; for(var i = 0; i < binary.length; i++) { array.push(binary.charCodeAt(i)); } // Return our Blob object return new Blob([new Uint8Array(array)], {type: 'image/gif'}); } /* var file= dataURLtoBlob(dataURL); */
Now, you can add the Blob as FormData and send to server
现在,您可以将Blob添加为FormData并发送到服务器
As bergi pointed out, the encode.stream().getData() actually returns a binary string. 正如bergi指出的那样,encode.stream()。getData()实际上返回一个二进制字符串。
var array = [];
for(var i = 0; i < binaryGIF.length; i++) {
array.push(binaryGIF.charCodeAt(i));
}
// Return our Blob object
var file = new Blob([new Uint8Array(array)], {type: 'image/gif'});
// Create new form data
var fd = new FormData();
// Append our Canvas image file to the form data
fd.append("sample-image-name-for-name-attribute", file);
// And send it
$.ajax({
url: "my-rest-endpoint",
type: "POST",
data: fd,
processData: false,
contentType: false,
}).done(function(respond){
alert(respond);
});
Hope it helps. 希望能帮助到你。 You should be able to use the file on the server as you handle a normal file upload.
处理正常的文件上传时,您应该能够使用服务器上的文件。
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