apprtc 0.0.0

AppRTC in Rust
Documentation 
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/*
 *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */

/* More information about these options at jshint.com/docs/options */

/* globals describe, expect, it, maybePreferCodec, removeCodecParam,
   setCodecParam */

'use strict';

describe('Sdp utils test', function() {
  var SDP_WITH_AUDIO_CODECS = [
    'v=0',
    'm=audio 9 RTP/SAVPF 111 103 104 0 9',
    'a=rtcp-mux',
    'a=rtpmap:111 opus/48000/2',
    'a=fmtp:111 minptime=10',
    'a=rtpmap:103 ISAC/16000',
    'a=rtpmap:9 G722/8000',
    'a=rtpmap:0 PCMU/8000',
    'a=rtpmap:8 PCMA/8000',
  ].join('\r\n');

  it('moves Isac 16K to default when preferred', function() {
    var result = maybePreferCodec(SDP_WITH_AUDIO_CODECS, 'audio', 'send',
        'iSAC/16000');
    var audioLine = result.split('\r\n')[1];
    expect(audioLine).toEqual('m=audio 9 RTP/SAVPF 103 111 104 0 9');
  });

  it('does nothing if preferred codec not found', function() {
    var result = maybePreferCodec(SDP_WITH_AUDIO_CODECS, 'audio', 'send',
        'iSAC/123456');
    var audioLine = result.split('\r\n')[1];
    expect(audioLine).toEqual(SDP_WITH_AUDIO_CODECS.split('\r\n')[1]);
  });

  it('moves codec even if payload type is same as udp port', function() {
    var result = maybePreferCodec(SDP_WITH_AUDIO_CODECS,
        'audio',
        'send',
        'G722/8000');
    var audioLine = result.split('\r\n')[1];
    expect(audioLine).toEqual('m=audio 9 RTP/SAVPF 9 111 103 104 0');
  });

  it('remove and set codec param modify then fmtp line', function() {
    var result = setCodecParam(SDP_WITH_AUDIO_CODECS, 'opus/48000',
        'minptime', '20');
    var audioLine = result.split('\r\n')[4];
    expect(audioLine).toEqual('a=fmtp:111 minptime=20');

    result = setCodecParam(result, 'opus/48000', 'useinbandfec', '1');
    audioLine = result.split('\r\n')[4];
    expect(audioLine).toEqual('a=fmtp:111 minptime=20;useinbandfec=1');

    result = removeCodecParam(result, 'opus/48000', 'minptime');
    audioLine = result.split('\r\n')[4];
    expect(audioLine).toEqual('a=fmtp:111 useinbandfec=1');

    var newResult = removeCodecParam(result, 'opus/48000', 'minptime');
    expect(newResult).toEqual(result);
  });

  it('remove and set codec param modify fmtp line', function() {
    var result = setCodecParam(SDP_WITH_AUDIO_CODECS, 'opus/48000',
        'minptime', '20');
    var audioLine = result.split('\r\n')[4];
    expect(audioLine).toEqual('a=fmtp:111 minptime=20');

    result = setCodecParam(result, 'opus/48000', 'useinbandfec', '1');
    audioLine = result.split('\r\n')[4];
    expect(audioLine).toEqual('a=fmtp:111 minptime=20;useinbandfec=1');

    result = removeCodecParam(result, 'opus/48000', 'minptime');
    audioLine = result.split('\r\n')[4];
    expect(audioLine).toEqual('a=fmtp:111 useinbandfec=1');

    var newResult = removeCodecParam(result, 'opus/48000', 'minptime');
    expect(newResult).toEqual(result);
  });

  it('remove and set codec param remove and add fmtp line if needed',
      function() {
        var result = removeCodecParam(SDP_WITH_AUDIO_CODECS, 'opus/48000',
            'minptime');
        var audioLine = result.split('\r\n')[4];
        expect(audioLine).toEqual('a=rtpmap:103 ISAC/16000');
        result = setCodecParam(result, 'opus/48000', 'inbandfec', '1');
        audioLine = result.split('\r\n')[4];
        expect(audioLine).toEqual('a=fmtp:111 inbandfec=1');
      });
});