Begin refactor of AVDA to support zero-copy.

content/common/gpu/media/android_video_decode_accelerator_state_provider.h

+// Copyright 2015 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 CONTENT_COMMON_GPU_MEDIA_ANDROID_VIDEO_DECODE_ACCELERATOR_STATE_PROVIDER_H_
+#define CONTENT_COMMON_GPU_MEDIA_ANDROID_VIDEO_DECODE_ACCELERATOR_STATE_PROVIDER_H_
+
+#include "base/compiler_specific.h"
+#include "base/threading/thread_checker.h"
+#include "content/common/content_export.h"
+#include "media/video/video_decode_accelerator.h"
+
+namespace gfx {
+class SurfaceTexture;
+}
+
+namespace gpu {
+namespace gles2 {
+class GLES2Decoder;
+}
+}
+
+namespace media {
+class VideoCodecBridge;
+}
+
+namespace content {
+
+// Helper class that provides the BackingStrategy with enough state
+// to do useful work.
+class AndroidVideoDecodeAcceleratorStateProvider {
+ public:
+  virtual ~AndroidVideoDecodeAcceleratorStateProvider() {}
+
+  // Various handy getters.
+  virtual const gfx::Size& GetSize() const = 0;
+  virtual const base::ThreadChecker& ThreadChecker() const = 0;
+  virtual gfx::SurfaceTexture* GetSurfaceTexture() const = 0;
+  virtual uint32 GetSurfaceTextureId() const = 0;
+  virtual gpu::gles2::GLES2Decoder* GetGlDecoder() const = 0;
+  virtual media::VideoCodecBridge* GetMediaCodec() = 0;
+
+  // Helper function to report an error condition and stop decoding.
+  // This will post NotifyError(), and transition to the error state.
+  // It is meant to be called from the RETURN_ON_FAILURE macro.
+  virtual void PostError(const ::tracked_objects::Location& from_here,
+                         media::VideoDecodeAccelerator::Error error) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_MEDIA_ANDROID_VIDEO_DECODE_ACCELERATOR_STATE_PROVIDER_H_