Render inband text tracks in the media pipeline

media/filters/pipeline_integration_test_base.cc

Index: media/filters/pipeline_integration_test_base.cc
diff --git a/media/filters/pipeline_integration_test_base.cc b/media/filters/pipeline_integration_test_base.cc
index 3f0910a2b8b2a4180573d4aefc609cfa5b8ed6a9..1bcaab9a93d314fac5ec9937106f0b968e4872df 100644
--- a/media/filters/pipeline_integration_test_base.cc
+++ b/media/filters/pipeline_integration_test_base.cc
@@ -11,9 +11,11 @@
 #include "media/filters/chunk_demuxer.h"
 #include "media/filters/ffmpeg_audio_decoder.h"
 #include "media/filters/ffmpeg_demuxer.h"
+#include "media/filters/ffmpeg_text_decoder.h"
 #include "media/filters/ffmpeg_video_decoder.h"
 #include "media/filters/file_data_source.h"
 #include "media/filters/opus_audio_decoder.h"
+#include "media/filters/text_renderer_impl.h"
 #include "media/filters/vpx_video_decoder.h"
 
 using ::testing::AnyNumber;
@@ -71,6 +73,20 @@ void PipelineIntegrationTestBase::DemuxerNeedKeyCB(
   need_key_cb_.Run(std::string(), type, init_data);
 }
 
+void PipelineIntegrationTestBase::OnFFmpegTextTrackCB(
+    media::TextKind kind,
+    const std::string& label,
+    const std::string& language,
+    int index) {
+ EXPECT_GE(index, 0);
+
+ typedef std::pair<TextTracks::iterator, bool> result_t;
+ result_t result = ffmpeg_text_tracks_.insert(index);
+ EXPECT_TRUE(result.second);
+ ASSERT_NE(result.first, ffmpeg_text_tracks_.end());
+ EXPECT_EQ(*result.first, index);
+}
+
 void PipelineIntegrationTestBase::OnEnded() {
   DCHECK(!ended_);
   ended_ = true;
@@ -212,10 +228,14 @@ PipelineIntegrationTestBase::CreateFilterCollection(
 
   Demuxer::NeedKeyCB need_key_cb = base::Bind(
       &PipelineIntegrationTestBase::DemuxerNeedKeyCB, base::Unretained(this));
+  media::FFmpegAddTextTrackCB add_text_track_cb = base::Bind(
+      &PipelineIntegrationTestBase::OnFFmpegTextTrackCB,
+      base::Unretained(this));
   scoped_ptr<Demuxer> demuxer(
       new FFmpegDemuxer(message_loop_.message_loop_proxy(),
                         data_source_.get(),
                         need_key_cb,
+                        add_text_track_cb,
                         new MediaLog()));
   return CreateFilterCollection(demuxer.Pass(), decryptor);
 }
@@ -280,6 +300,17 @@ PipelineIntegrationTestBase::CreateFilterCollection(
   scoped_ptr<AudioRenderer> audio_renderer(audio_renderer_impl);
   collection->SetAudioRenderer(audio_renderer.Pass());
 
+  scoped_ptr<TextDecoder> text_decoder(
+      new FFmpegTextDecoder(message_loop_.message_loop_proxy()));
+
+  scoped_ptr<TextRenderer> text_renderer(
+      new TextRendererImpl(
+          message_loop_.message_loop_proxy(),
+          text_decoder.Pass(),
+          base::Bind(&PipelineIntegrationTestBase::OnCueReady,
+                     base::Unretained(this))));
+  collection->SetTextRenderer(text_renderer.Pass());
+
   return collection.Pass();
 }
 
@@ -297,6 +328,15 @@ void PipelineIntegrationTestBase::OnVideoRendererPaint(
   frame->HashFrameForTesting(&md5_context_);
 }
 
+void PipelineIntegrationTestBase::OnCueReady(
+    int index,
+    const scoped_refptr<media::TextBuffer>& text_buffer) {
+  EXPECT_GE(index, 0);
+
+  TextTracks::iterator it = ffmpeg_text_tracks_.find(index);
+  EXPECT_NE(it, ffmpeg_text_tracks_.end());
+}
+
 std::string PipelineIntegrationTestBase::GetVideoHash() {
   DCHECK(hashing_enabled_);
   base::MD5Digest digest;