[Chromecast] Process streams with different post-processing.

chromecast/media/service/cast_renderer.cc

Index: chromecast/media/service/cast_renderer.cc
diff --git a/chromecast/media/service/cast_renderer.cc b/chromecast/media/service/cast_renderer.cc
index 42964baf9931ca51a38fc5d8e885dda2567a16da..b04d7ddf745b76051b67d7d14e5d437b4cfdedb5 100644
--- a/chromecast/media/service/cast_renderer.cc
+++ b/chromecast/media/service/cast_renderer.cc
@@ -14,8 +14,10 @@
 #include "chromecast/media/cma/base/demuxer_stream_adapter.h"
 #include "chromecast/media/cma/pipeline/media_pipeline_impl.h"
 #include "chromecast/media/cma/pipeline/video_pipeline_client.h"
+#include "chromecast/public/media/audio_device_ids.h"
 #include "chromecast/public/media/media_pipeline_backend.h"
 #include "chromecast/public/media/media_pipeline_device_params.h"
+#include "media/audio/audio_device_description.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/media_log.h"
@@ -77,7 +79,15 @@ void CastRenderer::Initialize(::media::MediaResource* media_resource,
       (load_type == kLoadTypeMediaStream)
           ? MediaPipelineDeviceParams::kModeIgnorePts
           : MediaPipelineDeviceParams::kModeSyncPts;
-  MediaPipelineDeviceParams params(sync_type, backend_task_runner_.get());
+  MediaPipelineDeviceParams params(
+      sync_type, MediaPipelineDeviceParams::kAudioStreamNormal,
+      audio_device_id_ /* name */, backend_task_runner_.get());
+
+  if (audio_device_id_ == kTtsAudioDeviceId ||
+      audio_device_id_ == kSystemAudioDeviceId) {
+    load_type = kLoadTypeLiveSource;

[wzhong, 2017/02/21 16:03:46]

Why are those 2 streams live?

I thought live is only for streams like calling, BT audio and v2mirroring, etc.

[bshaya, 2017/02/21 23:30:14]

Live is for any stream that benefits from minimum latency and handles its own
buffering (if necessary).

+  }
+
   std::unique_ptr<MediaPipelineBackend> backend =
       create_backend_cb_.Run(params, audio_device_id_);