Having fun with sclang buffers

sclang-play/tutorial.sc

@@ -541,3 +541,198 @@
   Group.findRespondingMethodFor('postln').postln;
   // Group.findHelpForMethod('postln');
 )
+
+(
+  b = Buffer.alloc(s, 100, 2);
+  b.free;
+)
+
+(
+  b = Buffer.alloc(s, s.sampleRate * 8.0, 2);
+  b.free;
+)
+
+(
+  b = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav");
+
+  x = SynthDef(
+    "tutorial-PlayBuf",
+    {
+      |out = 0, bufnum|
+      Out.ar(out,
+        PlayBuf.ar(1, bufnum, BufRateScale.kr(bufnum))
+      )
+    }
+  ).play(s, [\bufnum, b]);
+
+  // x.free;
+  // b.free;
+)
+
+(
+  SynthDef(
+    "tutorial-Buffer-cue",
+    {
+      |out = 0, bufnum|
+      Out.ar(out, DiskIn.ar(1, bufnum))
+    }
+  ).add;
+)
+
+(
+  b = Buffer.cueSoundFile(
+    s,
+    Platform.resourceDir +/+ "sounds/a11wlk01-44_1.aiff",
+    0,
+    1
+  );
+
+  y = Synth.new("tutorial-Buffer-cue", [\bufnum, b], s);
+
+  b.free;
+  y.free;
+)
+
+(
+  b = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav");
+  b.bufnum.postln;
+  b.numFrames.postln;
+  b.numChannels.postln;
+  b.sampleRate.postln;
+  b.free.postln;
+)
+
+(
+  b = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav", action: { |buffer|
+    ("numFrames after update:" + buffer.numFrames).postln;
+    x = {
+      PlayBuf.ar(1, buffer, BufRateScale.kr(buffer))
+    }.play;
+  });
+
+  ("numFrames before update:" + b.numFrames).postln;
+
+  // x.free; b.free;
+)
+
+(
+  b = Buffer.alloc(s, s.sampleRate * 5, 1);
+
+  x = SynthDef(
+    "tutorial-RecordBuf",
+    {
+      |out = 0, bufnum = 0|
+      var noise;
+      noise = PinkNoise.ar(0.3);
+      RecordBuf.ar(noise, bufnum);
+    }
+  ).play(s, [\out, 0, \bufnum, b]);
+)
+
+(
+  x.free;
+)
+
+(
+  SynthDef(
+    "tutorial-Playback",
+    {
+      |out = 0, bufnum = 0|
+      var playbuf;
+      playbuf = PlayBuf.ar(1, bufnum);
+      FreeSelfWhenDone.kr(playbuf);
+      Out.ar(out, playbuf);
+    }
+  ).play(s, [\out, 0, \bufnum, b]);
+)
+
+(
+  b.free;
+)
+
+(
+  Date.getDate.postln;
+  b = Buffer.alloc(s, 8, 1);
+  b.updateInfo({
+    |buf|
+    buf.set(7, 0.5);
+    buf.get(7, { |msg| msg.postln });
+  });
+)
+
+(
+  b.free;
+)
+
+(
+  var nFrames = 16;
+
+  Buffer.alloc(s, nFrames).updateInfo({
+    |b|
+    Task.new({
+      0.01.wait;
+      b.setn(0, [1, 2, 3]);
+      b.getn(0, 3, { |msg| ("1: "+ msg).postln });
+      0.01.wait;
+      b.setn(0, Array.fill(nFrames, { 1.0.rand }));
+      b.getn(0, nFrames, {
+        |msg|
+        ("2: " + msg).postln;
+        "3:  buh bye".postln;
+        b.free
+      });
+    }).play;
+  });
+)
+
+(
+  v = FloatArray.fill(44100, { 1.0.rand2 });
+  b = Buffer.alloc(s, 44100);
+)
+
+(
+  b.loadCollection(v, action: {
+    |buf|
+    x = {
+      PlayBuf.ar(buf.numChannels, buf, BufRateScale.kr(buf), loop: 1) * 0.2;
+    }.play;
+  });
+)
+
+(
+  x.free;
+)
+
+(
+  b.loadToFloatArray(0, -1, { |floatArray| (floatArray == v).postln; });
+  b.free;
+)
+
+(
+  b.free;
+)
+
+(
+  b = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav");
+  b.updateInfo({
+    |b|
+    x = b.play(true);
+    SystemClock.sched(5, { x.free; b.free; });
+  });
+  // b.play;
+)
+
+(
+  b = Buffer.alloc(s, 512, 1);
+  b.cheby([1, 0, 1, 1, 0, 1]);
+
+  x = play({
+    Shaper.ar(
+      b,
+      SinOsc.ar(300, 0, Line.kr(0, 1, 6)),
+      0.5
+    )
+  });
+
+  SystemClock.sched(10, { x.free; b.free; });
+)