Fix missing seek information when video has no start time.

media/filters/ffmpeg_demuxer_unittest.cc

 // Copyright (c) 2012 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 <algorithm>
 #include <deque>
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 175 matching lines @@
   // Fixture members.
   scoped_ptr<FileDataSource> data_source_;
   scoped_ptr<FFmpegDemuxer> demuxer_;
   StrictMock<MockDemuxerHost> host_;
   base::MessageLoop message_loop_;
 
   AVFormatContext* format_context() {
     return demuxer_->glue_->format_context();
   }
 
+  int preferred_seeking_stream_index() const {
+    return demuxer_->preferred_stream_for_seeking_.first;
+  }
+
   void ReadUntilEndOfStream(DemuxerStream* stream) {
     bool got_eos_buffer = false;
     const int kMaxBuffers = 170;
     for (int i = 0; !got_eos_buffer && i < kMaxBuffers; i++) {
       stream->Read(base::Bind(&EosOnReadDone, &got_eos_buffer));
       message_loop_.Run();
     }
 
     EXPECT_TRUE(got_eos_buffer);
   }
@@ skipping 199 matching lines @@
   ASSERT_TRUE(text_stream);
   EXPECT_EQ(DemuxerStream::TEXT, text_stream->type());
 
   text_stream->Read(NewReadCB(FROM_HERE, 31, 0));
   message_loop_.Run();
 
   text_stream->Read(NewReadCB(FROM_HERE, 19, 500000));
   message_loop_.Run();
 }
 
+TEST_F(FFmpegDemuxerTest, SeekInitialized_NoVideoStartTime) {
+  CreateDemuxer("audio-start-time-only.webm");
+  InitializeDemuxer();
+  EXPECT_EQ(0, preferred_seeking_stream_index());
+}
+
 TEST_F(FFmpegDemuxerTest, Read_VideoPositiveStartTime) {
   const int64 kTimelineOffsetMs = 1352550896000LL;
 
   // Test the start time is the first timestamp of the video and audio stream.
   CreateDemuxer("nonzero-start-time.webm");
   InitializeDemuxerWithTimelineOffset(
       false, base::Time::FromJsTime(kTimelineOffsetMs));
 
   // Attempt a read from the video stream and run the message loop until done.
   DemuxerStream* video = demuxer_->GetStream(DemuxerStream::VIDEO);
@@ skipping 421 matching lines @@
     demuxer_->Stop(event.GetClosure());
     event.RunAndWait();
     demuxer_.reset();
     data_source_.reset();
   }
 }
 
 #endif
 
 }  // namespace media