From: Gray Leonard <gl7039a@american.edu>
Date: Fri, 15 Apr 2016 13:54:52 +0000 (-0400)
Subject: initial commit
X-Git-Tag: v0.0.1~4
X-Git-Url: https://git.aubio.org/?a=commitdiff_plain;h=583fa88daebe7bb893d97fed3e829226b8b10df0;p=node-aubio.git

initial commit
---

diff --git a/.gitignore b/.gitignore
index e920c16..7a8b17d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,5 @@ node_modules
 
 # Optional REPL history
 .node_repl_history
+
+*.mp3
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..e4520db
--- /dev/null
+++ b/index.js
@@ -0,0 +1,41 @@
+var ffi = require('ffi');
+var ref = require('ref');
+
+var intPtr = ref.refType('int');
+var stringPtr = ref.refType(ref.types.CString);
+
+var aubio = ffi.Library('libaubio', {
+	// beattracking / misc
+	"new_aubio_beattracking": [ "pointer", [ "int", "int", "int"]],
+	"aubio_beattracking_do": [ "void", [ "pointer", "pointer", "pointer"]],
+	"aubio_beattracking_get_bpm": [ "float", ["pointer"]],
+	"aubio_filter_do": [ "void", [ "pointer", "pointer" ]],
+	"new_aubio_filter_a_weighting": [ "pointer", [ "int" ]],
+
+	// source
+	"new_aubio_source": [ "pointer", [ "string", "int", "int" ]],
+	"aubio_source_do": [ "void", [ "pointer", "pointer", intPtr ]],
+	"aubio_source_do_multi": [ "void", [ "pointer", "pointer", intPtr ]],
+	"aubio_source_get_samplerate": [ "int", [ "pointer" ]],
+	"aubio_source_get_channels": [ "int", [ "pointer" ]],
+	"aubio_source_seek": [ "int", [ "pointer", "int" ]],
+	"aubio_source_close": [ "int", [ "pointer" ]],
+	"del_aubio_source": [ "void", [ "pointer" ]],
+
+
+	// fvec
+	"new_fvec": [ "pointer", [ "int" ]],
+	"del_fvec": [ "void", [ "pointer" ]],
+	"fvec_get_sample": [ "float", [ "pointer", "int" ]],
+	"fvec_set_sample": [ "void", [ "pointer", "float", "int" ]],
+	"fvec_get_data": [ "float", [ "pointer" ]],
+	"fvec_print": [ "void", [ "pointer" ]],
+	"fvec_set_all": [ "void", [ "pointer", "float" ]],
+	"fvec_zeros": [ "void", [ "pointer" ]],
+	"fvec_rev": [ "void", [ "pointer" ]],
+	"fvec_weight": [ "void", [ "pointer", "pointer" ]],
+	"fvec_copy": [ "void", [ "pointer", "pointer" ]],
+	"fvec_ones": [ "void", [ "pointer" ]],
+});
+
+module.exports = aubio;
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..b9d3009
--- /dev/null
+++ b/package.json
@@ -0,0 +1,30 @@
+{
+  "name": "node-aubio",
+  "version": "0.0.1",
+  "description": "Node.js bindings for audio software aubio",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/grayleonard/node-aubio.git"
+  },
+  "keywords": [
+    "audio",
+    "bindings",
+    "aubio",
+    "ffi",
+    "c"
+  ],
+  "author": "Gray Leonard",
+  "license": "GNU GPL v3",
+  "bugs": {
+    "url": "https://github.com/grayleonard/node-aubio/issues"
+  },
+  "homepage": "https://github.com/grayleonard/node-aubio",
+  "dependencies": {
+    "ffi": "^2.0.0",
+    "ref": "^1.3.2"
+  }
+}
diff --git a/test.js b/test.js
new file mode 100644
index 0000000..9168ceb
--- /dev/null
+++ b/test.js
@@ -0,0 +1,58 @@
+var aubio = require('./index.js');
+var ref = require('ref');
+
+var get_file_bpm = function(path, params) {
+
+	var source = aubio.new_aubio_source(path, params.samplerate, params.hop_s);//params.samplerate, params.hop_s);
+	var samplerate = aubio.aubio_source_get_samplerate(source);
+	console.log('samplerate: ' + samplerate);
+	var beats = [];
+	var total_frames = 0;
+	var test_fvec = aubio.new_fvec(params.hop_s);
+	var out_fvec = aubio.new_fvec(params.hop_s);
+	var tmp_read = ref.alloc('int'); 
+	var tempo = aubio.new_aubio_beattracking(params.hop_s, params.hop_s, params.samplerate);
+	var total_bpm = 0;
+	var count = 0;
+
+	while(true) {
+		aubio.aubio_source_do(source, test_fvec, tmp_read);
+		aubio.aubio_beattracking_do(tempo, test_fvec, out_fvec);
+		var test_sample = aubio.fvec_get_sample(test_fvec, 1);
+		console.log('test sample: ' + test_sample);
+		var read = tmp_read.deref();
+		total_frames += read;
+		count = count + 1;
+		total_bpm += aubio.aubio_beattracking_get_bpm(tempo);
+		if(read != params.hop_s) { break; }
+	} 
+	console.log('total' + total_frames);
+	console.log('bpm: ' + total_bpm / count);
+	aubio.del_aubio_source(source);
+}
+
+get_file_bpm('holden.mp3', {
+	samplerate: 44100,
+	win_s : 1024,
+	hop_s : 512,
+});
+
+/*var in_fvec = aubio.new_fvec(16);
+var out_fvec = aubio.new_fvec(4);
+aubio.fvec_ones(out_fvec);
+aubio.fvec_print(in_fvec);
+aubio.fvec_print(out_fvec);
+
+var tempo = aubio.new_aubio_beattracking(16, 256, 44100);
+
+var i = 0;
+
+while(i < 10) {
+	aubio.aubio_beattracking_do(tempo, in_fvec, out_fvec);
+	console.log(aubio.aubio_beattracking_get_bpm(tempo));
+	i++
+}
+
+//var test_filt = aubio.new_aubio_filter_a_weighting(44100);
+//aubio.aubio_filter_do(test_fvec, test_filt);
+//*/