2.0.0

.vscode/extensions.json

@@ -1,6 +1,7 @@
 {
 	"recommendations": [
 		"openfl.lime-vscode-extension",
-		"redhat.vscode-xml"
+		"redhat.vscode-xml",
+		"aaron-bond.better-comments"
 	]
 }

CHANGELOG.md

@@ -1,11 +1,25 @@
-## 1.2
+## 1.3.0
+- Added `waveformBarSize`, `waveformBarPadding`,
+    - Allows for more customizable waveform designs!
+    - Increase the bar size for more blockier waveforms which are also less expensive to compute
+- Added `waveformRMSColor`, `waveformDrawRMS`
+    - Allows for visualizing the RMS (root mean square) of the audio data.
+    - The RMS represents the average/effective loudness of audio.
+- Added `waveformDrawBaseline`
+    - Simply draws a line in the middle of the waveform to represent 0
+- Added sample graph renderer when trying to view very low time ranges
+    - A seamless way of transitioning from the peak-based renderer and the graphed samples is planned for a future release.
+- Added `SINGLE_CHANNEL(channel)` to `WaveformDrawMode` to allow drawing a single channel across the entire waveform area.
+- A good chunk of code was refactored, so probably quite a few bug fixes?
+
+## 1.2.0
 - Added experimental HTML5 support
 - 32bit audio now assumes it's stored as in Float32 format
     - This is temporary until a proper way to differentiate the two is found. See https://github.com/ACrazyTown/flixel-waveform/issues/9
 - Samples are now normalized in the range (-1, 1) instead of (0, 1)
     - This is an internal change and should have no effect on anything public.
 
-## 1.1
+## 1.1.0
 - Added support for 24bit audio
 - Fix crashing when using mono sounds.
 

haxelib.json

@@ -1,9 +1,11 @@
 {
     "name": "flixel-waveform",
     "url": "https://github.com/ACrazyTown/flixel-waveform",
+    "description": "A `FlxWaveform` is an `FlxSprite` extension that provides a simple yet powerful API for drawing waveforms from audio data.",
+    "tags": ["audio", "waveform", "haxe", "haxeflixel", "flixel"],
     "contributors": ["ACrazyTown"],
     "classPath": "src",
     "license": "MIT",
-    "version": "1.1.0",
-    "releasenote": "Support for 24bit audio; bugfixes; See CHANGELOG.md"
+    "version": "1.3.0",
+    "releasenote": "Stylization options, Graph samples, RMS; See CHANGELOG.md"
 }

samples/basic/Project.xml

@@ -4,7 +4,7 @@
 
 	<!-- _________________________ Application Settings _________________________ -->
 
-	<app title="flixel-waveform-sample" file="flixel-waveform-sample" main="Main" version="0.0.1" company="ACrazyTown" />
+	<app title="flixel-waveform-sample" file="flixel-waveform-sample" main="Main" version="1.3.0" company="ACrazyTown" />
 
 	<!--The flixel preloader is not accurate in Chrome. You can use it regularly if you embed the swf into a html file
 		or you can set the actual size of your file manually at "FlxPreloaderBase-onUpdate-bytesTotal"-->
@@ -16,7 +16,7 @@
 	<!-- ____________________________ Window Settings ___________________________ -->
 
 	<!--These window settings apply to all targets-->
-	<window width="400" height="400" fps="60" background="#000000" hardware="true" vsync="false" />
+	<window width="400" height="450" fps="60" background="#000000" hardware="true" vsync="false" />
 
 	<!--HTML5-specific-->
 	<window if="html5" resizable="true" />
@@ -31,7 +31,9 @@
 
 	<set name="BUILD_DIR" value="export" />
 	<source path="source" />
-	<assets path="assets" />
+
+	<assets path="assets" exclude="*.ogg" if="flash"/>
+	<assets path="assets" exclude="*.mp3" unless="flash"/>
 
 	<!-- _______________________________ Libraries ______________________________ -->
 
@@ -42,7 +44,7 @@
 	<!--<haxelib name="flixel-addons" />-->
 
 	<!--In case you want to use the ui package-->
-	<!--<haxelib name="flixel-ui" />-->
+	<haxelib name="flixel-ui" />
 
 	<!--In case you want to use nape with flixel-->
 	<!--<haxelib name="nape-haxe4" />-->

samples/basic/source/InitState.hx

@@ -0,0 +1,43 @@
+package;
+
+import flixel.FlxG;
+import flixel.FlxState;
+import flixel.text.FlxText;
+import flixel.util.FlxTimer;
+
+class InitState extends FlxState
+{
+    override function create():Void
+    {
+        #if js
+        // On JavaScript/HTML5 we have to get a user interaction first
+        // otherwise we cannot create an AudioContext and the app
+        // will crash.
+        var text:FlxText = new FlxText(0, 0, 0, "Click to start", 32);
+        text.screenCenter();
+        add(text);
+        #else
+        // If on a different target we can just proceed as usual.
+        FlxG.switchState(PlayState.new);
+        #end
+    }
+
+    var switching:Bool = false;
+    override function update(elapsed:Float):Void
+    {
+        super.update(elapsed);
+
+        // Check for user interaction & switch state if we get one.
+        #if js
+        if (FlxG.mouse.justPressed && !switching)
+        {
+            switching = true;
+
+            // Wait a small amount of time before switching to the state
+            // to give time for the audio context to start and avoid a crash
+            // See: https://github.com/ACrazyTown/flixel-waveform/issues/8#issuecomment-2585483164
+            FlxTimer.wait(0.1, () -> FlxG.switchState(PlayState.new));
+        }
+        #end
+    }
+}

samples/basic/source/Main.hx

@@ -8,6 +8,6 @@ class Main extends Sprite
     public function new()
     {
         super();
-        addChild(new FlxGame(0, 0, PlayState));
+        addChild(new FlxGame(0, 0, InitState));
     }
 }

samples/basic/source/PlayState.hx

@@ -1,31 +1,40 @@
 package;
 
+import flixel.addons.ui.FlxUIDropDownMenu;
+import flixel.addons.ui.FlxUINumericStepper;
+import flixel.addons.ui.FlxUICheckBox;
+import flixel.text.FlxText;
+import flixel.addons.ui.FlxUI;
+import flixel.addons.ui.FlxUIState;
+import flixel.ui.FlxButton;
 import flixel.FlxG;
 import flixel.FlxState;
 import flixel.addons.display.waveform.FlxWaveform;
 
-class PlayState extends FlxState
+class PlayState extends FlxUIState
 {
+    var ui:FlxUI;
+    var playPauseBtn:FlxButton;
+
     var waveform:FlxWaveform;
     var pixelsPerMs:Int;
 
     override public function create():Void
     {
         super.create();
 
+        // Setup some stuff
         #if debug
         FlxG.console.registerEnum(WaveformDrawMode);
         #end
         FlxG.autoPause = false;
-        FlxG.camera.bgColor = 0xFF152E5A;
 
-        FlxG.sound.playMusic("assets/beeper.ogg");
-        FlxG.sound.music.stop();
-        FlxG.sound.music.looped = true;
+        FlxG.sound.music = FlxG.sound.load("assets/beeper" + #if flash ".mp3" #else ".ogg" #end, 1.0, true);
 
         // NOTE: Due to a limitation, on HTML5
         // you have to play the audio source
         // before trying to make a waveform from it.
+        // See: https://github.com/ACrazyTown/flixel-waveform/issues/8
         FlxG.sound.music.play(true);
 
         // Check if bitmap max texture size is available.
@@ -46,18 +55,46 @@ class PlayState extends FlxState
         #end
 
         // Create a new FlxWaveform instance.
-        waveform = new FlxWaveform(0, 0, Std.int(FlxG.sound.music.length / pixelsPerMs), FlxG.height, 0xFF1C98E0);
+        waveform = new FlxWaveform(0, 50, Std.int(FlxG.sound.music.length / pixelsPerMs), FlxG.height - 50);
+
         // Load data from the FlxSound so the waveform renderer can process it.
         waveform.loadDataFromFlxSound(FlxG.sound.music);
+
         // We set our draw range.
         // When we leave it blank it'll default to a range from the beginning to the full length of the sound.
         waveform.setDrawRange();
+
         // We'll render both channels of the waveform seperately.
         waveform.waveformDrawMode = SPLIT_CHANNELS;
+
         // We don't have to manually generate the bitmap here, because `FlxWaveform.autoUpdateBitmap`
         // is true by default, and changing the waveform draw mode above will trigger a redraw.
         // waveform.generateWaveformBitmap();
+
+        // Set the color of the waveform.
+        waveform.waveformColor = 0xFF4577BE;
+
+        // Set the color of the waveform's background.
+        waveform.waveformBgColor = 0xFF253475;
+
+        // Toggle whether the RMS (root mean square) of the waveform should be drawn.
+        // The RMS represents the average/effective loudness of audio.
+        waveform.waveformDrawRMS = true;
+
+        // Set the color of the RMS waveform.
+        waveform.waveformRMSColor = 0xFF68C3FF;
+
+        // Whether the waveform baseline (line in the middle representing 0.0 of the sample) should be drawn
+        waveform.waveformDrawBaseline = true;
+
+        // For extra style points we can adjust the size and spacing of the waveform bars!
+        // As a demonstration, we'll set the size to 4px and the padding to 2px
+        waveform.waveformBarSize = 4;
+        waveform.waveformBarPadding = 2;
+
         add(waveform);
+
+        setupUI();
     }
 
     override public function update(elapsed:Float):Void
@@ -66,13 +103,86 @@ class PlayState extends FlxState
 
         if (FlxG.sound.music.playing)
         {
-            // Make our camera follow the audio time.
-            camera.scroll.x = FlxG.sound.music.time / pixelsPerMs;
+            waveform.x = -(FlxG.sound.music.time / pixelsPerMs);
         }
 
         if (FlxG.keys.justPressed.SPACE)
+            playPause();
+    }
+
+    // --- Beyond this point is UI code you should not care about --
+
+    function setupUI():Void
+    {
+        ui = new FlxUI();
+        add(ui);
+
+        playPauseBtn = new FlxButton(5, 0, "Pause Music", playPause);
+        playPauseBtn.y = 5;
+        ui.add(playPauseBtn);
+
+        var drawRMSCheckbox:FlxUICheckBox = new FlxUICheckBox(10, 0, null, null, "Draw RMS");
+        drawRMSCheckbox.y = 30;
+        drawRMSCheckbox.checked = true;
+        drawRMSCheckbox.callback = () ->
+        {
+            waveform.waveformDrawRMS = !waveform.waveformDrawRMS;
+        };
+        ui.add(drawRMSCheckbox);
+
+        var paddingStepper:FlxUINumericStepper = new FlxUINumericStepper(drawRMSCheckbox.x + drawRMSCheckbox.width - 10, 0, 1, 0, 0, 100, 0);
+        paddingStepper.y = 10;
+        paddingStepper.value = waveform.waveformBarPadding;
+        paddingStepper.name = "s_padding";
+        ui.add(paddingStepper);
+        var paddingLabel:FlxText = new FlxText(0, 0, 0, "Bar Padding");
+        paddingLabel.x = paddingStepper.x + paddingStepper.width;
+        paddingLabel.y = paddingStepper.y;
+        ui.add(paddingLabel);
+
+        var sizeStepper:FlxUINumericStepper = new FlxUINumericStepper(drawRMSCheckbox.x + drawRMSCheckbox.width - 10, 0, 1, 1, 1, 100, 0);
+        sizeStepper.y = paddingStepper.y + 20;
+        sizeStepper.value = waveform.waveformBarSize;
+        sizeStepper.name = "s_size";
+        ui.add(sizeStepper);
+        var sizeLabel:FlxText = new FlxText(0, 0, 0, "Bar Size");
+        sizeLabel.x = sizeStepper.x + sizeStepper.width;
+        sizeLabel.y = sizeStepper.y;
+        ui.add(sizeLabel);
+
+        var drawModeLabel:FlxText = new FlxText(paddingLabel.x + 80, 5, 0, "Waveform Draw Mode");
+        ui.add(drawModeLabel);
+        var drawModeDropdown:FlxUIDropDownMenu = new FlxUIDropDownMenu(drawModeLabel.x, 20, FlxUIDropDownMenu.makeStrIdLabelArray(["Combined", "Split Channels", "Single Channel (Left)", "Single Channel (Right)"]), (select) ->
+        {
+            switch (select)
+            {
+                case "Combined": waveform.waveformDrawMode = COMBINED;
+                case "Split Channels": waveform.waveformDrawMode = SPLIT_CHANNELS;
+                case "Single Channel (Left)": waveform.waveformDrawMode = SINGLE_CHANNEL(0);
+                case "Single Channel (Right)": waveform.waveformDrawMode = SINGLE_CHANNEL(1);
+            }
+        });
+        drawModeDropdown.selectedLabel = "Split Channels";
+        ui.add(drawModeDropdown);
+    }
+
+    function playPause():Void
+    {
+        FlxG.sound.music.playing ? FlxG.sound.music.pause() : FlxG.sound.music.resume();
+        playPauseBtn.text = (FlxG.sound.music.playing ? "Pause" : "Play") + " Music";
+    }
+
+    override public function getEvent(id:String, sender:Dynamic, data:Dynamic, ?params:Array<Dynamic>):Void
+    {
+        super.getEvent(id, sender, data, params);
+
+        if (id == FlxUINumericStepper.CHANGE_EVENT && sender is FlxUINumericStepper)
         {
-            FlxG.sound.music.playing ? FlxG.sound.music.pause() : FlxG.sound.music.resume();
+            var stepper:FlxUINumericStepper = cast sender;
+            if (stepper.name == "s_padding") 
+                waveform.waveformBarPadding = Std.int(stepper.value);
+            else if (stepper.name == "s_size")
+                waveform.waveformBarSize = Std.int(stepper.value);
         }
     }
 }

src/flixel/addons/display/waveform/BytesExt.hx

@@ -14,7 +14,7 @@ class BytesExt
     /**
      * The minimum value of a signed 8bit integer.
      */
-    public static inline final INT8_MIN:Int = -127;
+    public static inline final INT8_MIN:Int = -128;
 
     /**
      * The maximum value of a signed 8bit integer.