really basic test runner
npm test now does... something somewhat useful. now to write a bunch of tests.
This commit is contained in:
Andy Sloane
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8c37c8d96b
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7ca90f9b98
5 changed files with 116 additions and 20 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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node_modules
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12
package.json
12
package.json
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@ -1,11 +1,19 @@
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{
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"name": "jsxm",
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"version": "1",
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"version": "1.0.0",
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"description": "WebAudio FastTracker 2 .XM module player",
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"keywords": "fasttracker xm webaudio",
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"uri": "http://www.a1k0n.net/code/jsxm/",
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"repository": "a1k0n/jsxm",
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"author": "Andy Sloane <andy@a1k0n.net> (http://www.a1k0n.net/)",
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"main": "index.html",
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"window": {
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"frame": true,
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"toolbar": false,
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"position": "center",
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"resizable": true
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}
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},
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"scripts": { "test": "node test/all.js" },
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"devDependencies": { "test": ">=0.0.5" }
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}
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82
test/all.js
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82
test/all.js
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@ -0,0 +1,82 @@
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window = {};
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require('../xm.js', window);
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require('../xmeffects.js', window);
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var XMPlayer = window.XMPlayer;
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// set up basic blank single-channel, single-pattern XM
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function ResetXMData() {
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var xm = {};
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window.XMPlayer.xm = xm;
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xm.channelinfo = [];
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xm.songname = "test song";
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xm.song_looppos = 0;
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xm.nchan = 1;
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xm.flags = 1;
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xm.tempo = 3;
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xm.bpm = 125;
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xm.channelinfo.push({
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number: 0,
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filterstate: new Float32Array(3),
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vol: 0,
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pan: 128,
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period: 1920 - 48*16,
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vL: 0, vR: 0,
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vLprev: 0, vRprev: 0,
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mute: 0,
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volE: 0, panE: 0,
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retrig: 0,
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vibratodepth: 1,
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vibratospeed: 1,
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});
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xm.songpats = [0];
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// 1 channel, 2 row blank pattern
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xm.patterns = [
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[[[-1, -1, -1, 0, 0]]],
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[[[-1, -1, -1, 0, 0]]]];
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xm.instruments = [];
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xm.instruments.push({
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'name': "test instrument",
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'number': 0,
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'samples': [
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{ 'len': 256, 'loop': 0,
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'looplen': 256, 'note': 0, 'fine': 0,
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'pan': 128, 'type': 0, 'vol': 64,
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'sampledata': new Float32Array(256)
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}
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],
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'samplemap': new Uint8Array(96),
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'env_vol': new XMPlayer.Envelope([0, 64, 1, 0], 2, 0, 0, 0),
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'env_pan': new XMPlayer.Envelope([0, 32], 0, 0, 0, 0)
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});
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// reset song position
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XMPlayer.cur_songpos = -1;
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XMPlayer.cur_pat = -1;
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XMPlayer.cur_tick = xm.tempo;
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return xm;
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}
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// using assert passed to the test function that just logs failures
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exports['test XM startup'] = function(assert) {
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ResetXMData();
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XMPlayer.nextTick();
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assert.equal(XMPlayer.cur_songpos, 0, 'advance to initial song position');
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assert.equal(XMPlayer.cur_pat, 0, 'advance to pattern 0');
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assert.equal(XMPlayer.cur_tick, 0, 'advance to tick 0');
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assert.equal(XMPlayer.cur_row, 1, 'advance to row 1');
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};
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exports['test note on'] = function(assert) {
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var xm = ResetXMData();
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// [row][column][channel]
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xm.patterns[0][0][0] = [48, 1, 0x10 + 33, 0, 0]; // C-4 1 40 000
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XMPlayer.nextTick();
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var ch = xm.channelinfo[0];
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assert.equal(ch.note, 48, 'set note');
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assert.equal(ch.period, 1152, 'channel period');
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assert.equal(ch.vol, 33, 'channel volume');
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assert.equal(ch.samp, xm.instruments[0].samples[0], 'set sample');
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};
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if (module == require.main) require('test').run(exports);
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37
xm.js
37
xm.js
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@ -9,7 +9,7 @@ if (!window.XMView) {
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}
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var XMView = window.XMView;
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player.PeriodForNote = PeriodForNote;
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player.periodForNote = periodForNote;
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player.prettify_effect = prettify_effect;
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player.initAudio = initAudio;
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player.loadXM = loadXM;
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@ -23,6 +23,10 @@ player.cur_ticksamp = 0;
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player.cur_tick = 6;
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player.xm = {}; // contains all song data
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// exposed for testing
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player.nextTick = nextTick;
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player.Envelope = Envelope;
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// for pretty-printing notes
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var _note_names = [
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"C-", "C#", "D-", "D#", "E-", "F-",
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@ -30,6 +34,10 @@ var _note_names = [
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var f_smp = 44100; // updated by play callback, default value here
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// per-sample exponential moving average for volume changes (to prevent pops
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// and clicks); evaluated every 8 samples
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var popfilter_alpha = 0.9837;
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function prettify_note(note) {
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if (note < 0) return "---";
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if (note == 96) return "^^^";
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@ -72,7 +80,7 @@ function getstring(dv, offset, len) {
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// Return 2-pole Butterworth lowpass filter coefficients for
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// center frequncy f_c (relative to sampling frequency)
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function FilterCoeffs(f_c) {
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function filterCoeffs(f_c) {
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if (f_c > 0.5) { // we can't lowpass above the nyquist frequency...
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f_c = 0.5;
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}
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@ -84,24 +92,21 @@ function FilterCoeffs(f_c) {
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return [gain, 2*c, -c*c - s*s];
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}
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popfilter = FilterCoeffs(200.0 / 44100.0);
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popfilter_alpha = 0.9837;
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function UpdateChannelPeriod(ch, period) {
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function updateChannelPeriod(ch, period) {
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var freq = 8363 * Math.pow(2, (1152.0 - period) / 192.0);
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if (isNaN(freq)) {
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console.log("invalid period!", period);
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return;
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}
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ch.doff = freq / f_smp;
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ch.filter = FilterCoeffs(ch.doff / 2);
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ch.filter = filterCoeffs(ch.doff / 2);
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}
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function PeriodForNote(ch, note) {
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function periodForNote(ch, note) {
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return 1920 - (note + ch.samp.note)*16 - ch.samp.fine / 8.0;
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}
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function next_row() {
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function nextRow() {
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if (player.cur_pat == -1 || player.cur_row >= player.xm.patterns[player.cur_pat].length) {
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player.cur_row = 0;
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player.cur_songpos++;
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@ -196,7 +201,7 @@ function next_row() {
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// special handling for portamentos: don't trigger the note
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if (ch.effect == 3 || ch.effect == 5) {
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if (r[i][0] != -1) {
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ch.periodtarget = PeriodForNote(ch, ch.note);
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ch.periodtarget = periodForNote(ch, ch.note);
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}
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triggernote = false;
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if (inst && inst.samplemap) {
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@ -224,7 +229,7 @@ function next_row() {
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ch.env_vol = new EnvelopeFollower(inst.env_vol);
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ch.env_pan = new EnvelopeFollower(inst.env_pan);
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if (ch.note != undefined) {
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ch.period = PeriodForNote(ch, ch.note);
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ch.period = periodForNote(ch, ch.note);
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}
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}
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}
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@ -279,11 +284,11 @@ EnvelopeFollower.prototype.Tick = function(release) {
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return value;
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};
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function next_tick() {
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function nextTick() {
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player.cur_tick++;
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if (player.cur_tick >= player.xm.tempo) {
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player.cur_tick = 0;
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next_row();
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nextRow();
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}
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for (var j = 0; j < player.xm.nchan; j++) {
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var ch = player.xm.channelinfo[j];
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@ -305,7 +310,7 @@ function next_tick() {
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}
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ch.volE = ch.env_vol.Tick(ch.release);
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ch.panE = ch.env_pan.Tick(ch.release);
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UpdateChannelPeriod(ch, ch.period + ch.periodoffset);
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updateChannelPeriod(ch, ch.period + ch.periodoffset);
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}
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}
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@ -386,7 +391,7 @@ function MixChannelIntoBuf(ch, start, end, dataL, dataR) {
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var i = start;
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var failsafe = 100;
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while (i < end) {
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if (failsafe-- == 0) {
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if (failsafe-- === 0) {
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console.log("failsafe in mixing loop! channel", ch.number, k, sample_end,
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loopstart, looplen, dk);
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break;
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@ -518,7 +523,7 @@ function audio_cb(e) {
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while(buflen > 0) {
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if (player.cur_pat == -1 || player.cur_ticksamp >= ticklen) {
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next_tick(f_smp);
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nextTick(f_smp);
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player.cur_ticksamp -= ticklen;
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}
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var tickduration = Math.min(buflen, ticklen - player.cur_ticksamp);
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@ -8,7 +8,7 @@ function eff_t1_0(ch) { // arpeggio
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if (ch.effectdata != 0 && ch.inst != undefined) {
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var arpeggio = [0, ch.effectdata>>4, ch.effectdata&15];
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var note = ch.note + arpeggio[player.cur_tick % 3];
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ch.period = player.PeriodForNote(ch, note);
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ch.period = player.periodForNote(ch, note);
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}
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}
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@ -294,4 +294,4 @@ player.effects_t1 = [ // effect functions on tick 1+
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eff_unimplemented // z
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];
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})(window || {});
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})(window);
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