Chromecast: adds interfaces for hardware layer of CMA pipeline.

chromecast/media/cma/test/media_component_device_feeder_for_test.h

+// Copyright 2014 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.
+
+#ifndef CHROMECAST_MEDIA_CMA_TEST_MEDIA_COMPONENT_DEVICE_FEEDER_FOR_TEST_H_
+#define CHROMECAST_MEDIA_CMA_TEST_MEDIA_COMPONENT_DEVICE_FEEDER_FOR_TEST_H_
+
+#include <list>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/time/time.h"
+#include "chromecast/media/cma/backend/audio_pipeline_device.h"
+#include "chromecast/media/cma/backend/media_clock_device.h"
+#include "chromecast/media/cma/backend/media_pipeline_device.h"
+#include "chromecast/media/cma/backend/video_pipeline_device.h"
+#include "chromecast/media/cma/base/decoder_buffer_base.h"
+
+namespace chromecast {
+namespace media {
+
+typedef std::list<scoped_refptr<DecoderBufferBase> > FrameList;

[damienv1, 2014/10/03 23:43:34]

The name is different for the same structure in one of the test file.

[gunsch, 2014/10/04 00:37:40]

Done.

+
+class MediaComponentDeviceFeederForTest {
+ public:
+  MediaComponentDeviceFeederForTest(
+      MediaComponentDevice *device,
+      const FrameList& frames,
+      base::Callback<void(MediaComponentDeviceFeederForTest *)> eos_cb);

[damienv1, 2014/10/03 23:43:34]

|eos_cb| should be just a closure. Seems a bit weird.
In that case, it would be better to pass eos_cb as part of Initialize and let
the caller bind it with the MediaComponentDeviceFeederForTest.

[gunsch, 2014/10/04 00:37:40]

Sort of hard to bind the object, since you have to create the object first :)
Moved it to Initialize

+
+  virtual ~MediaComponentDeviceFeederForTest();
+
+  void Initialize();
+
+  // Feed one frame into the pipeline.
+  void Feed();
+
+  // Cycle telling feeder how long to wait before feeding next frame
+  // IE, on frame i, feeder will wait atleast (scheduler determined)
+  // pattern[i % ||pattern||] before feeding next frame
+  void SetDelayedFeedPattern(const std::vector<base::TimeDelta>& pattern);

[damienv1, 2014/10/03 23:43:34]

Does not seem to be used anymore. Please check with Kyle and Sergey since this
was a way to generate some underrun (which won't be the case anymore since
feeding is much faster than playback).

[gunsch, 2014/10/04 00:37:40]

Done.

[damienv1, 2014/10/06 17:00:23]

So, not interested in generating some underruns anymore ?

[gunsch, 2014/10/06 17:19:51]

Sergey said it was fine to remove. I'm sure we can always re-add from git logs
if it is needed again.

+
+ private:
+  void OnFramePushed(MediaComponentDevice::FrameStatus status);
+
+  void OnEos();
+
+  MediaComponentDevice *media_component_device_;
+  FrameList frames_;
+
+  // Frame index where the audio device is switching to the kStateRunning.
+  int rendering_frame_idx_;
+
+  // Frame index where the clock device is switching to the kStateRunning
+  int clock_frame_idx_;
+
+  // Timing pattern to feed the pipeline.
+  std::vector<base::TimeDelta> delayed_feed_pattern_;
+  size_t delayed_feed_pattern_idx_;
+
+  // Set to enable eos callback
+  base::Callback<void(MediaComponentDeviceFeederForTest *)> eos_cb_;

[damienv1, 2014/10/03 23:43:34]

Should just be a closure.

[gunsch, 2014/10/04 00:37:40]

Done.

+
+  bool feeding_completed_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaComponentDeviceFeederForTest);
+};
+
+}  // namespace media
+}  // namespace chromecast
+
+#endif  // CHROMECAST_MEDIA_CMA_TEST_MEDIA_COMPONENT_DEVICE_FEEDER_FOR_TEST_H_