When playing back in reverse, make sure the grain to be played takes that into account.

[sound.git] / sound.html

diff --git a/sound.html b/sound.html
index d5185e4951668ba26d61c3c7c8f74c90ae88437a..af92487fed4a92d50c0306d2005b32ab7bc0adef 100644 (file)
--- a/sound.html
+++ b/sound.html
@@ -32,8 +32,10 @@
                audio.addEventListener('canplaythrough', eventLogger);
                audio.addEventListener('emptied', eventLogger);
                audio.addEventListener('ended', eventLogger);
+               audio.addEventListener('ended', updateTime);
                audio.addEventListener('loadstart', eventLogger);
                audio.addEventListener('pause', eventLogger);
+               audio.addEventListener('pause', updateTime);
                audio.addEventListener('play', eventLogger);
                audio.addEventListener('playing', eventLogger);
                audio.addEventListener('progress', eventLogger);
@@ -44,6 +46,8 @@
                audio.addEventListener('timeupdate', updateTime);
                audio.addEventListener('durationchange', eventLogger);
                audio.addEventListener('durationchange', updateDuration);
+               audio.addEventListener('ratechange', eventLogger);
+               audio.addEventListener('ratechange', updateRate);
        }
 
        function formatTime(time) {
@@ -54,12 +58,24 @@
 
        function updateTime() {
                var time = document.getElementById('time');
-               time.innerText = formatTime(audio.currentTime);
+               var currentTime = audio.currentTime;
+               time.innerText = formatTime(currentTime);
+
+               var timeline = document.getElementById('timeline');
+               timeline.value = currentTime;
        }
 
        function updateDuration() {
                var duration = document.getElementById('duration');
                duration.innerText = formatTime(audio.duration);
+
+               var timeline = document.getElementById('timeline');
+               timeline.max = audio.duration;
+       }
+
+       function updateRate() {
+               var rate = document.getElementById('rate');
+               rate.value = audio.playbackRate;
        }
 
        </script>
@@ -72,13 +88,16 @@
                </select>
        </div>
        <div>
+               <input type="range" min="0" max="1" step="0.01" value="1" oninput="audio.volume = event.target.value" />
                <button onclick="audio.play()">play</button>
                <button onclick="audio.pause()">pause</button>
                <button onclick="audio.muted = !audio.muted">mute</button>
                <span id="time">--:--</span>
-               <input type="range" min="0" max="1" step="0.01" value="1" onchange="audio.volume = event.target.value" />
+               <input id="timeline" type="range" min="0" max="1" step="0.01" value="0" oninput="audio.currentTime = event.target.value" />
                <span id="duration">--:--</span>
                <button onclick="audio.loop = !audio.loop">loop</button>
+               <button onclick="audio.playbackRate = -audio.playbackRate">reverse</button>
+               <input id="rate" type="range" min="-2" max="2" step="0.01" value="1" oninput="audio.playbackRate = event.target.value" />
        </div>
 
 </body>