1 files changed, 140 insertions, 0 deletions
diff --git a/mediagoblin/static/js/audio.js b/mediagoblin/static/js/audio.js
new file mode 100644
index 00000000..8c91bd0b
--- /dev/null
+++ b/mediagoblin/static/js/audio.js
@@ -0,0 +1,140 @@
+/**
+ * GNU MediaGoblin -- federated, autonomous media hosting
+ * Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+var audioPlayer = new Object();
+
+(function (audioPlayer) {
+    audioPlayer.init = function (audioElement) {
+        audioPlayer.audioElement = audioElement;
+        console.log(audioElement);
+        attachEvents();
+        $(audioElement).hide();
+    };
+
+    function attachEvents () {
+        audioPlayer.audioElement.addEventListener('durationchange', audioPlayer.durationChange, true);
+        audioPlayer.audioElement.addEventListener('timeupdate', audioPlayer.timeUpdate, true);
+        audioPlayer.audioElement.addEventListener('progress', audioPlayer.onProgress, true);
+        $(document).ready( function () {
+            $('.audio-spectrogram').delegate('.seekbar', 'click', audioPlayer.onSeek);
+            $('.audio-spectrogram').delegate('.audio-control-play-pause', 'click', audioPlayer.playPause);
+        });
+    }
+
+    audioPlayer.onProgress = function(a, b, c) {
+        console.log(a, b, c);
+        buffered = audioPlayer.audioElement.buffered;
+
+        ranges = new Array(); 
+
+        for (i = 0; i < buffered.length; i++) {
+            ranges[i] = new Array();
+            ranges[i][0] = buffered.start(i);
+            ranges[i][1] = buffered.end(i);
+        }
+        console.log('ranges', ranges);
+        $('.audio-spectrogram .buffered').width(
+            (ranges[0][1] / audioPlayer.audioElement.duration) * audioPlayer.imageElement.width());
+    };
+
+    audioPlayer.onSeek = function (e) {
+        console.log('onSeek', e);
+        im = audioPlayer.imageElement;
+        pos = e.offsetX / im.width();
+        audioPlayer.audioElement.currentTime = pos * audioPlayer.audioElement.duration;
+        audioPlayer.audioElement.play();
+        audioPlayer.setState(audioPlayer.PLAYING);
+    };
+
+    audioPlayer.playPause = function (e) {
+        console.log('playPause', e);
+        if (audioPlayer.audioElement.paused) {
+            audioPlayer.audioElement.play();
+            audioPlayer.setState(audioPlayer.PLAYING);
+        } else {
+            audioPlayer.audioElement.pause();
+            audioPlayer.setState(audioPlayer.PAUSED);
+        }
+    };
+
+    audioPlayer.NULL = null;
+    audioPlayer.PLAYING = 2;
+    audioPlayer.PAUSED = 4;
+
+    audioPlayer.state = audioPlayer.NULL;
+
+    audioPlayer.setState = function (state) {
+        if (state == audioPlayer.state) {
+            return;
+        }
+
+        switch (state) {
+            case audioPlayer.PLAYING:
+                $('.audio-spectrogram .audio-control-play-pause')
+                    .removeClass('paused').addClass('playing')
+                    .text('■');
+                break;
+            case audioPlayer.PAUSED:
+                $('.audio-spectrogram .audio-control-play-pause')
+                    .removeClass('playing').addClass('paused')
+                    .text('▶');
+                break;
+        }
+    };
+
+    audioPlayer.durationChange = function () {
+        duration = audioPlayer.audioElement.duration;
+    };
+
+    audioPlayer.timeUpdate = function () {
+        currentTime = audioPlayer.audioElement.currentTime;
+        playhead = audioPlayer.imageElement.parent().find('.playhead');
+        playhead.css('width', (currentTime / audioPlayer.audioElement.duration) * audioPlayer.imageElement.width());
+        time = formatTime(currentTime);
+        duration = formatTime(audioPlayer.audioElement.duration);
+        audioPlayer.imageElement.parent().find('.audio-currentTime').text(time + '/' + duration);
+    };
+
+    function formatTime(seconds) {
+        var h = Math.floor(seconds / (60 * 60));
+        var m = Math.floor((seconds - h * 60 * 60) / 60);
+        var s = Math.round(seconds - h * 60 * 60 - m * 60);
+        return '' + (h ? (h < 10 ? '0' + h : h) + ':' : '') + (m < 10 ? '0' + m : m) + ':' + (s < 10 ? '0' + s : s);
+    }
+
+    audioPlayer.attachToImage = function (imageElement) {
+        /**
+         * Attach the player to an image element
+         */
+        console.log(imageElement);
+        im = $(imageElement);
+        audioPlayer.imageElement = im;
+        $('<div class="playhead"></div>').appendTo(im.parent());
+        $('<div class="buffered"></div>').appendTo(im.parent());
+        $('<div class="seekbar"></div>').appendTo(im.parent());
+        $('<div class="audio-control-play-pause paused">▶</div>').appendTo(im.parent());
+        $('<div class="audio-currentTime">00:00</div>').appendTo(im.parent());
+    };
+})(audioPlayer);
+
+$(document).ready(function () {
+    audioElements = $('.audio-media .audio-player');
+    audioPlayer.init(audioElements[0]);
+    audioPlayer.attachToImage($('.audio-spectrogram img')[0]);
+});
+