media/blink/texttrack_impl.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "media/blink/texttrack_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/location.h"
   9 #include "base/single_thread_task_runner.h"
  10 #include "media/base/bind_to_current_loop.h"
  11 #include "media/blink/webinbandtexttrack_impl.h"
  12 #include "third_party/WebKit/public/platform/WebInbandTextTrackClient.h"
  13 #include "third_party/WebKit/public/platform/WebMediaPlayerClient.h"
  14
  15 namespace media {
  16
  17 TextTrackImpl::TextTrackImpl(
  18     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
  19     blink::WebMediaPlayerClient* client,
  20     scoped_ptr<WebInbandTextTrackImpl> text_track)
  21     : task_runner_(task_runner),
  22       client_(client),
  23       text_track_(text_track.Pass()) {
  24   client_->addTextTrack(text_track_.get());
  25 }
  26
  27 TextTrackImpl::~TextTrackImpl() {
  28   task_runner_->PostTask(
  29       FROM_HERE,
  30       base::Bind(&TextTrackImpl::OnRemoveTrack,
  31                  client_,
  32                  base::Passed(&text_track_)));
  33 }
  34
  35 void TextTrackImpl::addWebVTTCue(const base::TimeDelta& start,
  36                                  const base::TimeDelta& end,
  37                                  const std::string& id,
  38                                  const std::string& content,
  39                                  const std::string& settings) {
  40   task_runner_->PostTask(
  41     FROM_HERE,
  42     base::Bind(&TextTrackImpl::OnAddCue,
  43                 text_track_.get(),
  44                 start, end,
  45                 id, content, settings));
  46 }
  47
  48 void TextTrackImpl::OnAddCue(WebInbandTextTrackImpl* text_track,
  49                              const base::TimeDelta& start,
  50                              const base::TimeDelta& end,
  51                              const std::string& id,
  52                              const std::string& content,
  53                              const std::string& settings) {
  54   if (blink::WebInbandTextTrackClient* client = text_track->client()) {
  55     client->addWebVTTCue(start.InSecondsF(),
  56                          end.InSecondsF(),
  57                          blink::WebString::fromUTF8(id),
  58                          blink::WebString::fromUTF8(content),
  59                          blink::WebString::fromUTF8(settings));
  60   }
  61 }
  62
  63 void TextTrackImpl::OnRemoveTrack(
  64     blink::WebMediaPlayerClient* client,
  65     scoped_ptr<WebInbandTextTrackImpl> text_track) {
  66   if (text_track->client())
  67     client->removeTextTrack(text_track.get());
  68 }
  69
  70 }  // namespace media