Add live mode detection in WebM MediaSource parser.

media/formats/webm/webm_tracks_parser.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/formats/webm/webm_tracks_parser.h"
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "media/base/buffers.h"
@@ skipping 25 matching lines @@
 
   int64 mult = duration_in_ns / 1000;
   mult /= timecode_scale_in_us;
   if (mult == 0)
     return kNoTimestamp();
 
   mult = static_cast<double>(mult) * timecode_scale_in_us;
   return base::TimeDelta::FromMicroseconds(mult);
 }
 
-WebMTracksParser::WebMTracksParser(const LogCB& log_cb, bool ignore_text_tracks)
-    : track_type_(-1),
+WebMTracksParser::WebMTracksParser(const LogCB& log_cb,
+                                   bool ignore_text_tracks,
+                                   bool live_mode)
+    : live_mode_(live_mode),
+      track_type_(-1),
       track_num_(-1),
       track_uid_(-1),
       seek_preroll_(-1),
       codec_delay_(-1),
       default_duration_(-1),
       audio_track_num_(-1),
       audio_default_duration_(-1),
       video_track_num_(-1),
       video_default_duration_(-1),
       ignore_text_tracks_(ignore_text_tracks),
@@ skipping 163 matching lines @@
 
         if (default_duration_ == 0) {
           MEDIA_LOG(log_cb_) << "Illegal 0ns video TrackEntry DefaultDuration";
           return false;
         }
         video_default_duration_ = default_duration_;
 
         DCHECK(!video_decoder_config_.IsValidConfig());
         if (!video_client_.InitializeConfig(
                 codec_id_, codec_private_, !video_encryption_key_id_.empty(),
-                &video_decoder_config_)) {
+                live_mode_, &video_decoder_config_)) {
           return false;
         }
       } else {
         MEDIA_LOG(log_cb_) << "Ignoring video track " << track_num_;
         ignored_tracks_.insert(track_num_);
       }
     } else if (track_type_ == kWebMTrackTypeSubtitlesOrCaptions ||
                track_type_ == kWebMTrackTypeDescriptionsOrMetadata) {
       if (ignore_text_tracks_) {
         MEDIA_LOG(log_cb_) << "Ignoring text track " << track_num_;
@@ skipping 99 matching lines @@
 
   if (id == kWebMIdLanguage) {
     track_language_ = str;
     return true;
   }
 
   return true;
 }
 
 }  // namespace media