From: Guillaume Pellerin <yomguy@parisson.com>
Date: Thu, 5 Mar 2015 14:42:31 +0000 (+0100)
Subject: add waves tools
X-Git-Url: https://git.parisson.com/?a=commitdiff_plain;h=8f29fda5a21b4bbfc769bec0e75eedc9fffd6642;p=timeside.git

add waves tools
---

diff --git a/timeside/player/static/timeside/js/timeside-waves.js b/timeside/player/static/timeside/js/timeside-waves.js
new file mode 100644
index 0000000..aea53dc
--- /dev/null
+++ b/timeside/player/static/timeside/js/timeside-waves.js
@@ -0,0 +1,248 @@
+var d3 = wavesUI.d3;
+var loader = new loaders.AudioBufferLoader();
+
+function waveform(div_id) {
+
+    // add waveform
+    loader.load('download/ogg').then(function(audioBuffer) {
+        try {
+
+            var id = '#' + div_id;
+            var id_sub = '#' + div_id + '_sub';
+
+            var data = [{
+                start: audioBuffer.duration/4,
+                duration: audioBuffer.duration/2
+            }];
+
+            var buffer = audioBuffer.getChannelData(0).buffer
+
+            // 1. creat graph
+            var graph = wavesUI.timeline()
+                .xDomain([0, audioBuffer.duration])
+                .width(1024)
+                .height(140);
+
+            // 2. create layers
+            var waveformLayer = wavesUI.waveform()
+                .data(buffer)
+                .sampleRate(audioBuffer.sampleRate)
+                .color('purple')
+                // .opacity(0.8);
+
+            var segmentLayer = wavesUI.segment()
+                .params({
+                    interactions: { editable: true },
+                    opacity: 0.4,
+                    handlerOpacity: 0.6
+                })
+                .data(data)
+                .color('steelblue');
+
+            // 3. add layers to graph
+            graph.add(waveformLayer);
+            graph.add(segmentLayer);
+
+            // 4. draw graph
+            d3.select(id).call(graph.draw);
+
+            var graph_sub = wavesUI.timeline()
+                .xDomain([0, audioBuffer.duration])
+                .width(1024)
+                .height(140);
+
+            var waveformLayerSub = wavesUI.waveform()
+                .data(buffer)
+                .sampleRate(audioBuffer.sampleRate)
+                .color('purple')
+                // .opacity(0.8);
+
+            graph_sub.add(waveformLayerSub);
+
+            d3.select(id_sub).call(graph_sub.draw);
+
+            var zoomLayer = wavesUI.zoomer()
+            .select(id_sub)
+            .on('mousemove', function(e) {
+               // update graph xZoom
+               graph_sub.xZoom(e);
+            })
+            .on('mouseup', function(e) {
+                // set the final xZoom value of the graph
+                graph_sub.xZoomSet();
+            });
+
+        } catch (err) {
+            console.log(err);
+        }
+    }, function() {});
+}
+
+
+function timeline_get_data(json_url, div_id) {
+    $.getJSON(json_url, function(data_list) {
+
+    for (var i = 0; i < data_list.length; i++) {
+        var data = data_list[i];
+        timeline_result(data, div_id);
+    }
+    });
+}
+
+function timeline_result(data, div_id) {
+
+    var time_mode = data.time_mode
+    var data_mode = data.data_mode
+    var id = data.id_metadata.id
+
+    switch (time_mode) {
+    case 'global':
+    console.log(id, time_mode, data_mode);
+    break;
+    case 'event':
+    switch (data_mode) {
+    case 'value':
+        console.log(id, time_mode, data_mode);
+        break;
+    case 'label':
+        timeline_event_label(data, div_id);
+        break;
+    }
+    break;
+    case 'segment':
+    switch (data_mode) {
+    case 'value':
+        timeline_segment_value(data, div_id);
+        break;
+
+    case 'label':
+        console.log(id, time_mode, data_mode);
+        break;
+    }
+    break;
+    case 'framewise':
+    console.log(id, time_mode, data_mode);
+    break;
+    }
+}
+
+
+function timeline_segment_value(data, div_id) {
+    var duration = data.audio_metadata.duration;
+    var durations = data.data_object.duration.numpyArray;
+    var starts = data.data_object.time.numpyArray;
+    var values = data.data_object.value.numpyArray;
+    // format data
+    var data = durations.map(function(dummy, index) {
+        return {
+            start: starts[index],
+            duration: durations[index],
+            height: values[index]
+        };
+    });
+
+
+    // var minValue = Math.min.apply(null, values);
+    var max_value = Math.max.apply(null, values);
+
+    var graph = wavesUI.timeline()
+        .xDomain([0, duration])
+        .yDomain([0, max_value])
+        .width(1024)
+        .height(140);
+
+    var segmentLayer = wavesUI.segment()
+        .data(data)
+        .color('steelblue')
+        .opacity(0.8);
+
+    // 3. add layers to graph
+    graph.add(segmentLayer);
+
+    // 4. draw graph
+    d3.select('#'+div_id).call(graph.draw);
+
+    var zoomLayer = wavesUI.zoomer()
+        .select('#'+div_id)
+        .on('mousemove', function(e) {
+        // update graph xZoom
+        graph.xZoom(e);
+        })
+        .on('mouseup', function(e) {
+            // set the final xZoom value of the graph
+            graph.xZoomSet();
+        });
+
+    // to update the data, add it to the data array and redraw the graph
+    $('#add-data').on('click', function(e) {
+        e.preventDefault();
+
+        var datum = {
+            start: 2,
+            duration: 1,
+            height: 1000
+        };
+
+        data.push(datum);
+        graph.update();
+    });
+}
+
+function timeline_event_label(data, div_id) {
+    var duration = data.audio_metadata.duration;
+    var starts = data.data_object.time.numpyArray;
+    var values = data.data_object.label
+    // format data
+    var data = starts.map(function(dummy, index) {
+        return {
+            x: starts[index],
+            height: values[index]
+        };
+    });
+
+
+    // var minValue = Math.min.apply(null, values);
+    var max_value = Math.max.apply(null, values);
+
+    var graph = wavesUI.timeline()
+        .xDomain([0, duration])
+        .yDomain([0, max_value])
+        .width(1024)
+        .height(140);
+
+    var markerLayer = wavesUI.marker()
+        .data(data)
+        .color('steelblue')
+        .opacity(0.8);
+
+    // 3. add layers to graph
+    graph.add(markerLayer);
+
+    // 4. draw graph
+    d3.select('#'+div_id).call(graph.draw);
+
+    var zoomLayer = wavesUI.zoomer()
+        .select('#'+div_id)
+        .on('mousemove', function(e) {
+        // update graph xZoom
+        graph.xZoom(e);
+        })
+        .on('mouseup', function(e) {
+            // set the final xZoom value of the graph
+            graph.xZoomSet();
+        });
+
+    // to update the data, add it to the data array and redraw the graph
+    $('#add-data').on('click', function(e) {
+        e.preventDefault();
+
+        var datum = {
+            start: 2,
+            duration: 1,
+            height: 1000
+        };
+
+        data.push(datum);
+        graph.update();
+    });
+}