Add GLStreamTextureImage

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;
+class GLShareGroup;
 }
 
 namespace content {
 
 // 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();
 
@@ skipping 15 matching lines @@
   // 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_;
   }
 
+  // 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 did_attach_surface_texture();
+  void DidAttachSurfaceTexture();
+
+  // Call this when the SurfaceTexture is detached from its GL context.  This
+  // will cause us to forget the last binding.
+  void DidDetachSurfaceTexture();
+
+  // Get and set the share group for our SurfaceTexture.
+  void set_share_group(const scoped_refptr<gfx::GLShareGroup>& share_group) {
+    share_group_ = share_group;
+  }
+
+  gfx::GLShareGroup* share_group() const { return share_group_.get(); }
 
  private:
   // 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_;
 
+  // The GL share group that we must be to reference our surface texture.
+  scoped_refptr<gfx::GLShareGroup> share_group_;
+
  protected:
   virtual ~AVDASharedState();
 
  private:
   friend class base::RefCounted<AVDASharedState>;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_AVDA_SHARED_STATE_H_