diff options
Diffstat (limited to 'htdocs/AudioBinding.js')
| -rw-r--r-- | htdocs/AudioBinding.js | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/htdocs/AudioBinding.js b/htdocs/AudioBinding.js new file mode 100644 index 0000000..607d31c --- /dev/null +++ b/htdocs/AudioBinding.js @@ -0,0 +1,198 @@ + var afb = new AFB("api", "mysecret"); + var ws; + var sndcard="HALNotSelected"; + var evtidx=0; + var numid=0; + + function syntaxHighlight(json) { + if (typeof json !== 'string') { + json = JSON.stringify(json, undefined, 2); + } + json = json.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>'); + return json.replace(/("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g, function (match) { + var cls = 'number'; + if (/^"/.test(match)) { + if (/:$/.test(match)) { + cls = 'key'; + } else { + cls = 'string'; + } + } else if (/true|false/.test(match)) { + cls = 'boolean'; + } else if (/null/.test(match)) { + cls = 'null'; + } + return '<span class="' + cls + '">' + match + '</span>'; + }); + } + + function getParameterByName(name, url) { + if (!url) { + url = window.location.href; + } + name = name.replace(/[\[\]]/g, "\\$&"); + var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"), + results = regex.exec(url); + if (!results) return null; + if (!results[2]) return ''; + return decodeURIComponent(results[2].replace(/\+/g, " ")); + } + + // default soundcard is "PCH" + var devid=getParameterByName("devid"); + if (!devid) devid="hw:1"; + + var haldev=getParameterByName("haldev"); + if (!haldev) haldev="scarlett-usb"; + + var sndname=getParameterByName("sndname"); + if (!sndname) sndname="PCH"; + + var mode=getParameterByName("mode"); + if (!mode) mode="0"; + + + + + function replyok(obj) { + console.log("replyok:" + JSON.stringify(obj)); + document.getElementById("output").innerHTML = "OK: "+ syntaxHighlight(obj); + } + + function replyerr(obj) { + console.log("replyerr:" + JSON.stringify(obj)); + document.getElementById("output").innerHTML = "ERROR: "+ syntaxHighlight(obj); + } + + function gotevent(obj) { + console.log("gotevent:" + JSON.stringify(obj)); + document.getElementById("outevt").innerHTML = (evtidx++) +": "+JSON.stringify(obj); + } + + function send(message) { + var api = document.getElementById("api").value; + var verb = document.getElementById("verb").value; + document.getElementById("question").innerHTML = "subscribe: "+api+"/"+verb + " (" + JSON.stringify(message) +")"; + ws.call(api+"/"+verb, {data:message}).then(replyok, replyerr); + } + + + // On button click from HTML page + function callbinder(api, verb, query) { + console.log ("subscribe api="+api+" verb="+verb+" query=" +query); + var question = urlws +"/" +api +"/" +verb + "?query=" + JSON.stringify(query); + document.getElementById("question").innerHTML = syntaxHighlight(question); + ws.call(api+"/"+verb, query).then(replyok, replyerr); + } + + + // Retreive Select value and Text from the binder + // Note: selection of value/text for a given context is huggly!!! + function querySelectList (elemid, api, verb, query) { + + console.log("querySelectList elemid=%s api=%s verb=%s query=%s", elemid, api, verb, query); + + var selectobj = document.getElementById(elemid); + if (!selectobj) { + console.log ("****** elemid=%s does not exit in HTML page ****", elemid); + return; + } + + // onlick update selected HAL api + selectobj.onclick=function(){ + sndcard= this.value; + console.log ("Default Selection=" + sndcard); + }; + + function gotit (result) { + + // display response as for normal onclick action + replyok(result); + var response=result.response; + + // fulfill select with avaliable active HAL + for (idx=0; idx<response.length; idx++) { + var opt = document.createElement('option'); + + // Alsa LowLevel selection mode + if (response[idx].name) opt.text = response[idx].name; + if (response[idx].devid) opt.value = response[idx].devid; + + // HAL selection mode + if (response[idx].shortname) opt.text = response[idx].shortname; + if (response[idx].api) opt.value = response[idx].api; + + selectobj.appendChild(opt); + } + + sndcard= selectobj.value; + } + + var question = urlws +"/"+api +"/" +verb + "?query=" + JSON.stringify(query); + document.getElementById("question").innerHTML = syntaxHighlight(question); + + // request lowlevel ALSA to get API list + ws.call(api+"/"+verb, query).then(gotit, replyerr); + } + + function refresh_list (self, api, verb, query) { + console.log("refresh_list id=%s api=%s verb=%s query=%s", self.id, api, verb, query); + + if (self.value > 0) return; + + // onlick update selected HAL api + self.onclick=function(){ + numid = parseInt(self.value); + console.log ("Default numid=%d", numid); + }; + + function gotit (result) { + + // display response as for normal onclick action + replyok(result); + var response=result.response; + + + + // fulfill select with avaliable active HAL + for (idx=0; idx<response.length; idx++) { + var opt = document.createElement('option'); + + // Alsa LowLevel selection mode + opt.text = response[idx].name + ' id=' + response[idx].id; + opt.value = response[idx].id; + + self.appendChild(opt); + } + self.selectedIndex=2; + numid = parseInt (self.value); + } + + var question = urlws +"/"+api +"/" +verb + "?query=" + JSON.stringify(query); + document.getElementById("question").innerHTML = syntaxHighlight(question); + + // request lowlevel ALSA to get API list + ws.call(api+"/"+verb, query).then(gotit, replyerr); + } + + + function init(elemid, api, verb, query) { + + function onopen() { + // check for active HALs + querySelectList (elemid, api, verb, query); + + document.getElementById("main").style.visibility = "visible"; + document.getElementById("connected").innerHTML = "Binder WS Active"; + document.getElementById("connected").style.background = "lightgreen"; + ws.onevent("*", gotevent); + } + + function onabort() { + document.getElementById("main").style.visibility = "hidden"; + document.getElementById("connected").innerHTML = "Connected Closed"; + document.getElementById("connected").style.background = "red"; + + } + ws = new afb.ws(onopen, onabort); + } |