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      1 /*
      2  * Copyright (C) 2012 Apple Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "core/html/track/InbandTextTrack.h"
     28 
     29 #include "bindings/v8/ExceptionStatePlaceholder.h"
     30 #include "core/html/track/vtt/VTTCue.h"
     31 #include "platform/Logging.h"
     32 #include "public/platform/WebInbandTextTrack.h"
     33 #include "public/platform/WebString.h"
     34 #include <math.h>
     35 
     36 using blink::WebInbandTextTrack;
     37 using blink::WebString;
     38 
     39 namespace WebCore {
     40 
     41 PassRefPtr<InbandTextTrack> InbandTextTrack::create(Document& document, TextTrackClient* client, WebInbandTextTrack* webTrack)
     42 {
     43     return adoptRef(new InbandTextTrack(document, client, webTrack));
     44 }
     45 
     46 InbandTextTrack::InbandTextTrack(Document& document, TextTrackClient* client, WebInbandTextTrack* webTrack)
     47     : TextTrack(document, client, emptyAtom, webTrack->label(), webTrack->language(), webTrack->id(), InBand)
     48     , m_webTrack(webTrack)
     49 {
     50     m_webTrack->setClient(this);
     51 
     52     switch (m_webTrack->kind()) {
     53     case WebInbandTextTrack::KindSubtitles:
     54         setKind(TextTrack::subtitlesKeyword());
     55         break;
     56     case WebInbandTextTrack::KindCaptions:
     57         setKind(TextTrack::captionsKeyword());
     58         break;
     59     case WebInbandTextTrack::KindDescriptions:
     60         setKind(TextTrack::descriptionsKeyword());
     61         break;
     62     case WebInbandTextTrack::KindChapters:
     63         setKind(TextTrack::chaptersKeyword());
     64         break;
     65     case WebInbandTextTrack::KindMetadata:
     66         setKind(TextTrack::metadataKeyword());
     67         break;
     68     case WebInbandTextTrack::KindNone:
     69     default:
     70         ASSERT_NOT_REACHED();
     71         break;
     72     }
     73 }
     74 
     75 InbandTextTrack::~InbandTextTrack()
     76 {
     77     // Make sure m_webTrack was cleared by trackRemoved() before destruction.
     78     ASSERT(!m_webTrack);
     79 }
     80 
     81 size_t InbandTextTrack::inbandTrackIndex()
     82 {
     83     ASSERT(m_webTrack);
     84     return m_webTrack->textTrackIndex();
     85 }
     86 
     87 void InbandTextTrack::trackRemoved()
     88 {
     89     ASSERT(m_webTrack);
     90     m_webTrack->setClient(0);
     91     m_webTrack = 0;
     92     clearClient();
     93 }
     94 
     95 void InbandTextTrack::addWebVTTCue(double start, double end, const WebString& id, const WebString& content, const WebString& settings)
     96 {
     97     RefPtr<VTTCue> cue = VTTCue::create(document(), start, end, content);
     98     cue->setId(id);
     99     cue->parseSettings(settings);
    100     addCue(cue);
    101 }
    102 
    103 } // namespace WebCore
    104