/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

include protocol PPluginBackgroundDestroyer;
include protocol PPluginModule;
include protocol PPluginScriptableObject;
include protocol PBrowserStream;
include protocol PPluginStream;
include protocol PStreamNotify;
include protocol PPluginSurface;

include "mozilla/GfxMessageUtils.h";

using NPError from "npapi.h";
using struct mozilla::plugins::NPRemoteWindow from "mozilla/plugins/PluginMessageUtils.h";
using struct mozilla::plugins::NPRemoteEvent from "mozilla/plugins/PluginMessageUtils.h";
using NPRect from "npapi.h";
using NPImageFormat from "npapi.h";
using NPNURLVariable from "npapi.h";
using NPCoordinateSpace from "npapi.h";
using NPNVariable from "npapi.h";
using mozilla::plugins::NativeWindowHandle from "mozilla/plugins/PluginMessageUtils.h";
using gfxSurfaceType from "gfxTypes.h";
using gfxIntSize from "nsSize.h";
using struct mozilla::null_t from "ipc/IPCMessageUtils.h";
using mozilla::plugins::WindowsSharedMemoryHandle from "mozilla/plugins/PluginMessageUtils.h";
using mozilla::plugins::DXGISharedSurfaceHandle from "mozilla/plugins/PluginMessageUtils.h";
using mozilla::CrossProcessMutexHandle from "mozilla/ipc/CrossProcessMutex.h";
using struct SurfaceDescriptorX11 from "gfxipc/ShadowLayerUtils.h";
using struct nsIntRect from "nsRect.h";

namespace mozilla {
namespace plugins {

struct IOSurfaceDescriptor {
  uint32_t surfaceId;
  double contentsScaleFactor;
};

union SurfaceDescriptor {
  Shmem;
  SurfaceDescriptorX11;
  PPluginSurface; // used on Windows
  IOSurfaceDescriptor; // used on OSX 10.5+
  // Descriptor can be null here in case
  // 1) of first Show call (prevSurface is null)
  // 2) when child is going to destroy
  //    and it just want to grab prevSurface
  //     back without giving new surface
  null_t;
};

union OptionalShmem {
  Shmem;
  null_t;
};

union AsyncSurfaceDescriptor {
  Shmem;
  DXGISharedSurfaceHandle;
};

struct NPRemoteAsyncSurface
{
  uint32_t version;
  gfxIntSize size;
  NPImageFormat format;
  uint32_t      stride;
  AsyncSurfaceDescriptor data;
  uintptr_t hostPtr;
};

intr protocol PPluginInstance
{
  manager PPluginModule;

  manages PPluginBackgroundDestroyer;
  manages PPluginScriptableObject;
  manages PBrowserStream;
  manages PPluginStream;
  manages PStreamNotify;
  manages PPluginSurface;

child:
  intr __delete__();

  intr NPP_SetWindow(NPRemoteWindow window);

  intr NPP_GetValue_NPPVpluginWantsAllNetworkStreams()
    returns (bool value, NPError result);

  // this message is not used on non-X platforms
  intr NPP_GetValue_NPPVpluginNeedsXEmbed()
    returns (bool value, NPError result);

  intr NPP_GetValue_NPPVpluginScriptableNPObject()
    returns (nullable PPluginScriptableObject value, NPError result);

  intr NPP_SetValue_NPNVprivateModeBool(bool value) returns (NPError result);
  intr NPP_GetValue_NPPVpluginNativeAccessibleAtkPlugId()
    returns (nsCString plug_id, NPError result);

  intr NPP_HandleEvent(NPRemoteEvent event)
    returns (int16_t handled);
  // special cases where we need to a shared memory buffer
  intr NPP_HandleEvent_Shmem(NPRemoteEvent event, Shmem buffer)
    returns (int16_t handled, Shmem rtnbuffer);
  // special cases where we need an iosurface
  intr NPP_HandleEvent_IOSurface(NPRemoteEvent event, uint32_t surfaceid)
    returns (int16_t handled);
  // special cases of HandleEvent to make mediating races simpler
  intr Paint(NPRemoteEvent event)
    returns (int16_t handled);
  // this is only used on windows to forward WM_WINDOWPOSCHANGE
  async WindowPosChanged(NPRemoteEvent event);
  // used on OS X to tell the child the contents scale factor
  // of its parent has changed
  async ContentsScaleFactorChanged(double aContentsScaleFactor);

  // ********************** Async plugins rendering
  // see https://wiki.mozilla.org/Gecko:AsyncPluginPainting
  // **********************

  // Async version of SetWindow call
  // @param surfaceType - gfxASurface::gfxSurfaceType
  //        plugin child must create offscreen buffer
  //        with type equals to surfaceType
  async AsyncSetWindow(gfxSurfaceType surfaceType, NPRemoteWindow window);

  // There is now an opaque background behind this instance (or the
  // background was updated).  The changed area is |rect|.  The
  // browser owns the background surface, and it's read-only from
  // within the plugin process.  |background| is either null_t to
  // refer to the existing background or a fresh descriptor.
  async UpdateBackground(SurfaceDescriptor background, nsIntRect rect);

  async NPP_DidComposite();

  intr NPP_Destroy()
    returns (NPError rv);

parent:
  intr NPN_GetValue_NPNVWindowNPObject()
    returns (nullable PPluginScriptableObject value, NPError result);
  intr NPN_GetValue_NPNVPluginElementNPObject()
    returns (nullable PPluginScriptableObject value, NPError result);
  intr NPN_GetValue_NPNVprivateModeBool()
    returns (bool value, NPError result);
  intr NPN_GetValue_NPNVnetscapeWindow()
    returns (NativeWindowHandle value, NPError result);
  intr NPN_GetValue_NPNVdocumentOrigin()
    returns (nsCString value, NPError result);
  intr NPN_GetValue_DrawingModelSupport(NPNVariable model)
    returns (bool value);

  intr NPN_SetValue_NPPVpluginWindow(bool windowed)
    returns (NPError result);
  intr NPN_SetValue_NPPVpluginTransparent(bool transparent)
    returns (NPError result);
  intr NPN_SetValue_NPPVpluginUsesDOMForCursor(bool useDOMForCursor)
    returns (NPError result);
  intr NPN_SetValue_NPPVpluginDrawingModel(int drawingModel)
    returns (OptionalShmem remoteImageData, CrossProcessMutexHandle mutex, NPError result);
  intr NPN_SetValue_NPPVpluginEventModel(int eventModel)
    returns (NPError result);

  intr NPN_GetURL(nsCString url, nsCString target)
    returns (NPError result);
  intr NPN_PostURL(nsCString url, nsCString target, nsCString buffer, bool file)
    returns (NPError result);

  /**
   * Covers both NPN_GetURLNotify and NPN_PostURLNotify.
   * @TODO This would be more readable as an overloaded method,
   *       but IPDL doesn't allow that for constructors.
   */
  intr PStreamNotify(nsCString url, nsCString target, bool post,
                    nsCString buffer, bool file)
    returns (NPError result);

  async NPN_InvalidateRect(NPRect rect);

  // Give |newSurface|, containing this instance's updated pixels, to
  // the browser for compositing.  When this method returns, any surface 
  // previously passed to Show may be destroyed.
  //
  // @param rect - actually updated rectangle, comparing to prevSurface content
  //               could be used for partial render of layer to topLevel context
  // @param newSurface - remotable surface
  // @param prevSurface - if the previous surface was shared-memory, returns
  //                      the shmem for reuse
  sync Show(NPRect updatedRect, SurfaceDescriptor newSurface)
    returns (SurfaceDescriptor prevSurface);

  async PPluginSurface(WindowsSharedMemoryHandle handle,
                       gfxIntSize size,
                       bool transparent);

  intr NPN_PushPopupsEnabledState(bool aState);

  intr NPN_PopPopupsEnabledState();

  intr NPN_GetValueForURL(NPNURLVariable variable, nsCString url)
    returns (nsCString value, NPError result);

  intr NPN_SetValueForURL(NPNURLVariable variable, nsCString url,
                         nsCString value)
    returns (NPError result);

  intr NPN_GetAuthenticationInfo(nsCString protocol_, nsCString host,
                                int32_t port, nsCString scheme,
                                nsCString realm)
    returns (nsCString username, nsCString password, NPError result);

  intr NPN_ConvertPoint(double sourceX, bool ignoreDestX, double sourceY, bool ignoreDestY, NPCoordinateSpace sourceSpace,
                       NPCoordinateSpace destSpace)
    returns (double destX, double destY, bool result);

  async RedrawPlugin();

  intr NPN_InitAsyncSurface(gfxIntSize size, NPImageFormat format)
    returns (NPRemoteAsyncSurface surfData, bool result);

  // Send notification that a plugin tried to negotiate Carbon NPAPI so that
  // users can be notified that restarting the browser in i386 mode may allow
  // them to use the plugin.
  sync NegotiatedCarbon();

  // Notifies us we can release a Async Surface DXGI texture.
  async ReleaseDXGISharedSurface(DXGISharedSurfaceHandle handle);

both:
  async PPluginScriptableObject();

child:
  /* NPP_NewStream */
  intr PBrowserStream(nsCString url,
                     uint32_t length,
                     uint32_t lastmodified,
                     nullable PStreamNotify notifyData,
                     nsCString headers,
                     nsCString mimeType,
                     bool seekable)
    returns (NPError rv,
             uint16_t stype);

parent:
  /* NPN_NewStream */
  intr PPluginStream(nsCString mimeType,
                    nsCString target)
    returns (NPError result);

parent:
  intr PluginFocusChange(bool gotFocus);

child:
  intr SetPluginFocus();
  intr UpdateWindow();

  async PPluginBackgroundDestroyer();
};

} // namespace plugins
} // namespace mozilla