Support for parsing encrypted WebM streams by src.

media/tools/seek_tester/seek_tester.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.
 //
 // This standalone binary is a helper for diagnosing seek behavior of the
 // demuxer setup in media/ code.  It answers the question: "if I ask the demuxer
 // to Seek to X ms, where will it actually seek to? (necessitating
 // frame-dropping until the original seek target is reached)".  Sample run:
 //
 // $ ./out/Debug/seek_tester .../LayoutTests/media/content/test.ogv 6300
@@ skipping 35 matching lines @@
                         media::DemuxerStream::Status status,
                         const scoped_refptr<media::DecoderBuffer>& buffer) {
   CHECK_EQ(status, media::DemuxerStream::kOk);
   if (buffer->GetTimestamp() == media::kNoTimestamp())
     *timestamp_ms = -1;
   else
     *timestamp_ms = buffer->GetTimestamp().InMillisecondsF();
   loop->PostTask(FROM_HERE, MessageLoop::QuitClosure());
 }
 
+static void NeedKey(const std::string& type, scoped_array<uint8> init_data,
+             int init_data_size) {
+  LOG(INFO) << "File is encrypted.";
+}
+
 int main(int argc, char** argv) {
   base::AtExitManager at_exit;
   media::InitializeMediaLibraryForTesting();
 
   CHECK_EQ(argc, 3) << "\nUsage: " << argv[0] << " <file> <seekTimeInMs>";
   uint64 seek_target_ms;
   CHECK(base::StringToUint64(argv[2], &seek_target_ms));
   scoped_refptr<media::FileDataSource> file_data_source(
       new media::FileDataSource());
   CHECK(file_data_source->Initialize(base::FilePath::FromUTF8Unsafe(argv[1])));
 
   DemuxerHostImpl host;
   MessageLoop loop;
   media::PipelineStatusCB quitter = base::Bind(&QuitMessageLoop, &loop);
+  media::FFmpegNeedKeyCB need_key_cb = base::Bind(&NeedKey);
   scoped_refptr<media::FFmpegDemuxer> demuxer(
-      new media::FFmpegDemuxer(loop.message_loop_proxy(), file_data_source));
+      new media::FFmpegDemuxer(loop.message_loop_proxy(), file_data_source,
+                               need_key_cb));
   demuxer->Initialize(&host, quitter);
   loop.Run();
 
   demuxer->Seek(base::TimeDelta::FromMilliseconds(seek_target_ms), quitter);
   loop.Run();
 
   uint64 audio_seeked_to_ms;
   uint64 video_seeked_to_ms;
   scoped_refptr<media::DemuxerStream> audio_stream(
       demuxer->GetStream(media::DemuxerStream::AUDIO));
@@ skipping 11 matching lines @@
         base::Bind(&TimestampExtractor, &video_seeked_to_ms, &loop));
     loop.Run();
     LOG(INFO) << "  video seeked to: " << video_seeked_to_ms << "ms";
   }
 
   demuxer->Stop(base::Bind(&MessageLoop::Quit, base::Unretained(&loop)));
   loop.Run();
 
   return 0;
 }