Migrate content/common/gpu/media code to media/gpu

content/common/gpu/media/avda_shared_state.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_AVDA_SHARED_STATE_H_
-#define CONTENT_COMMON_GPU_AVDA_SHARED_STATE_H_
-
-#include "base/synchronization/waitable_event.h"
-#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
-#include "media/base/android/media_codec_bridge.h"
-#include "media/base/android/sdk_media_codec_bridge.h"
-#include "ui/gl/gl_context.h"
-#include "ui/gl/gl_image.h"
-#include "ui/gl/gl_surface.h"
-
-namespace gfx {
-class SurfaceTexture;
-}
-
-namespace media {
-class MediaCodecBridge;
-}
-
-namespace content {
-class AVDACodecImage;
-
-// Shared state to allow communication between the AVDA and the
-// GLImages that configure GL for drawing the frames.
-class AVDASharedState : public base::RefCounted<AVDASharedState> {
- public:
-  AVDASharedState();
-
-  GLint surface_texture_service_id() const {
-    return surface_texture_service_id_;
-  }
-
-  // Set the SurfaceTexture's client texture name, which the SurfaceTexture
-  // might not know about yet (see surface_texture_is_attached()).
-  void set_surface_texture_service_id(GLint id) {
-    surface_texture_service_id_ = id;
-  }
-
-  // Signal the "frame available" event.  This may be called from any thread.
-  void SignalFrameAvailable();
-
-  void WaitForFrameAvailable();
-
-  // Context that the surface texture is bound to, or nullptr if it is not in
-  // the attached state.
-  gfx::GLContext* context() const { return context_.get(); }
-
-  gfx::GLSurface* surface() const { return surface_.get(); }
-
-  bool surface_texture_is_attached() const {
-    return surface_texture_is_attached_;
-  }
-
-  // Iterates over all known codec images and updates the MediaCodec attached to
-  // each one.
-  void CodecChanged(media::MediaCodecBridge* codec);
-
-  // Methods for finding and updating the AVDACodecImage associated with a given
-  // picture buffer id. GetImageForPicture() will return null for unknown ids.
-  // Calling SetImageForPicture() with a nullptr will erase the entry.
-  void SetImageForPicture(int picture_buffer_id, AVDACodecImage* image);
-  AVDACodecImage* GetImageForPicture(int picture_buffer_id) const;
-
-  // TODO(liberato): move the surface texture here and make these calls
-  // attach / detach it also.  There are several changes going on in avda
-  // concurrently, so I don't want to change that until the dust settles.
-  // AVDACodecImage would no longer hold the surface texture.
-
-  // Call this when the SurfaceTexture is attached to a GL context.  This will
-  // update surface_texture_is_attached(), and set the context() and surface()
-  // to match.
-  void DidAttachSurfaceTexture();
-
-  // Call this when the SurfaceTexture is detached from its GL context.  This
-  // will cause us to forget the last binding.
-  void DidDetachSurfaceTexture();
-
- protected:
-  virtual ~AVDASharedState();
-
- private:
-  friend class base::RefCounted<AVDASharedState>;
-
-  // Platform gl texture Id for |surface_texture_|.  This will be zero if
-  // and only if |texture_owner_| is null.
-  // TODO(liberato): This should be GLuint, but we don't seem to have the type.
-  GLint surface_texture_service_id_;
-
-  // For signalling OnFrameAvailable().
-  base::WaitableEvent frame_available_event_;
-
-  // True if and only if the surface texture is currently attached.
-  bool surface_texture_is_attached_;
-
-  // Context and surface that the surface texture is attached to, if it is
-  // currently attached.
-  scoped_refptr<gfx::GLContext> context_;
-  scoped_refptr<gfx::GLSurface> surface_;
-
-  // Maps a picture buffer id to a AVDACodecImage.
-  std::map<int, AVDACodecImage*> codec_images_;
-
-  DISALLOW_COPY_AND_ASSIGN(AVDASharedState);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_COMMON_GPU_AVDA_SHARED_STATE_H_