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Local wave file streaming test using HTML5 audio + Web Audio API >>> http://fukuroder.sakura.ne.jp/gist/a8830598e587f15f97d0/local_wave_file_streaming_test.html
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8'> | |
| <title>local wave file streaming test</title> | |
| <script src='http://code.jquery.com/jquery-2.1.1.min.js'></script> | |
| <script> | |
| $(function(){ | |
| // HTML5 audio | |
| var audio_element = new Audio(); | |
| $('#play') | |
| .attr({disabled:'disabled', value:'play'}) | |
| .css({width:'100px'}) | |
| .click(function(){ | |
| if($(this).val() == 'stop'){ | |
| //-------------- | |
| // play -> stop | |
| //-------------- | |
| // change button caption | |
| $(this).val('play'); | |
| // enable file selector | |
| $('#wave').removeAttr('disabled'); | |
| // stop | |
| audio_element.pause(); | |
| audio_element.currentTime = 0; | |
| } | |
| else{ | |
| //-------------- | |
| // stop -> play | |
| //-------------- | |
| // change button caption | |
| $(this).val('stop'); | |
| // disable file selector | |
| $('#wave').attr({disabled:'disabled'}) | |
| // play | |
| audio_element.load(); | |
| audio_element.play(); | |
| } | |
| }); | |
| $('#gain') | |
| .attr({min:0, max:100, value:50}) | |
| .change(function(){ | |
| // update gain | |
| if(gainNode) gainNode.gain.value = $(this).val()*0.01; | |
| }); | |
| $('#wave') | |
| .attr({accept:'audio/*'}) | |
| .change(function(file_evt){ | |
| if(file_evt.target.files.length == 0) | |
| { | |
| $('#play').attr({disabled:'disabled'}) | |
| return; | |
| } | |
| audio_element.src = URL.createObjectURL(file_evt.target.files[0]); | |
| $('#play').removeAttr('disabled'); | |
| }); | |
| // get AudioContext | |
| var context = new AudioContext(); | |
| // generate media element node | |
| var audioNode = context.createMediaElementSource(audio_element); | |
| // generate gain node | |
| var gainNode = context.createGain(); | |
| gainNode.gain.value = $('#gain').val()*0.01; | |
| // connect (media element->gain->destination) | |
| audioNode.connect(gainNode); | |
| gainNode.connect(context.destination); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| local wave file streaming test using HTML5 audio + Web Audio API | |
| <hr/> | |
| <input type='button' id='play' autocomplete='off' /> | |
| volume:<input type='number' id='gain' autocomplete='off' /> | |
| <input type='file' id='wave' autocomplete='off' /> | |
| </body> | |
| </html> |
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