[DO NOT COMMIT] Initial MediaPlayerRenderer plumbing and basic features

media/base/pipeline_impl.cc

Index: media/base/pipeline_impl.cc
diff --git a/media/base/pipeline_impl.cc b/media/base/pipeline_impl.cc
index c5cb4841dc039970d0f8bb3cb8d1c587bcf99b69..bcebd0cb784ed05782fd4fce1a58213660e91adb 100644
--- a/media/base/pipeline_impl.cc
+++ b/media/base/pipeline_impl.cc
@@ -28,6 +28,7 @@
 #include "media/base/text_track_config.h"
 #include "media/base/timestamp_constants.h"
 #include "media/base/video_decoder_config.h"
+#include "media/media_features.h"
 
 static const double kDefaultPlaybackRate = 0.0;
 static const float kDefaultVolume = 1.0f;
@@ -71,6 +72,7 @@ class PipelineImpl::RendererWrapper : public DemuxerHost,
   void OnWaitingForDecryptionKey() final;
   void OnVideoNaturalSizeChange(const gfx::Size& size) final;
   void OnVideoOpacityChange(bool opaque) final;
+  void OnDurationChange(base::TimeDelta duration) final;
 
   void DoSeek(base::TimeDelta seek_timestamp, const PipelineStatusCB& done_cb);
   void DoStop(const base::Closure& done_cb);
@@ -543,6 +545,16 @@ void PipelineImpl::RendererWrapper::OnVideoOpacityChange(bool opaque) {
       base::Bind(&PipelineImpl::OnVideoOpacityChange, weak_pipeline_, opaque));
 }
 
+void PipelineImpl::RendererWrapper::OnDurationChange(base::TimeDelta duration) {
+#if BUILDFLAG(FORCE_MOJO_MEDIA_PLAYER_RENDERER)
+  SetDuration(duration);
+#else
+  // Duration changes should be surfaced by the DemuxerStream, via the
+  // DemuxerHost interface.
+  NOTREACHED();
+#endif
+}
+
 void PipelineImpl::RendererWrapper::SetDuration(base::TimeDelta duration) {
   // TODO(alokp): Add thread DCHECK after ensuring that all Demuxer
   // implementations call DemuxerHost on the media thread.
@@ -984,11 +996,18 @@ void PipelineImpl::RendererWrapper::InitializeRenderer(
     const PipelineStatusCB& done_cb) {
   DCHECK(media_task_runner_->BelongsToCurrentThread());
 
+#if BUILDFLAG(FORCE_MOJO_MEDIA_PLAYER_RENDERER)
+  if (!demuxer_->GetStream(DemuxerStream::URL)) {
+    done_cb.Run(PIPELINE_ERROR_COULD_NOT_RENDER);
+    return;
+  }
+#else
   if (!demuxer_->GetStream(DemuxerStream::AUDIO) &&
       !demuxer_->GetStream(DemuxerStream::VIDEO)) {
     done_cb.Run(PIPELINE_ERROR_COULD_NOT_RENDER);
     return;
   }
+#endif  // BUILDFLAG(FORCE_MOJO_MEDIA_PLAYER_RENDERER)
 
   if (cdm_context_)
     renderer_->SetCdm(cdm_context_, base::Bind(&IgnoreCdmAttached));
@@ -1000,6 +1019,14 @@ void PipelineImpl::RendererWrapper::ReportMetadata() {
   DCHECK(media_task_runner_->BelongsToCurrentThread());
 
   PipelineMetadata metadata;
+#if BUILDFLAG(FORCE_MOJO_MEDIA_PLAYER_RENDERER)
+  if (demuxer_->GetStream(DemuxerStream::URL)) {
+    // We don't know if the MediaPlayerRender has Audio/Video until we start
+    // playing. Conservatively assume that they do.
+    metadata.has_video = true;
+    metadata.has_audio = true;
+  }
+#else
   metadata.timeline_offset = demuxer_->GetTimelineOffset();
   DemuxerStream* stream = demuxer_->GetStream(DemuxerStream::VIDEO);
   if (stream) {
@@ -1010,6 +1037,7 @@ void PipelineImpl::RendererWrapper::ReportMetadata() {
   if (demuxer_->GetStream(DemuxerStream::AUDIO)) {
     metadata.has_audio = true;
   }
+#endif  // BUILDFLAG(FORCE_MOJO_MEDIA_PLAYER_RENDERER)
 
   main_task_runner_->PostTask(FROM_HERE, base::Bind(&PipelineImpl::OnMetadata,
                                                     weak_pipeline_, metadata));