/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsISupports.idl"
#include "nsIThread.idl"

%{C++
#include "mozilla/UniquePtr.h"
#include "nsTArray.h"
#include "nsStringGlue.h"
class GMPDecryptorProxy;
class GMPVideoDecoderProxy;
class GMPVideoEncoderProxy;
class GMPVideoHost;

namespace mozilla {
class GMPCrashHelper;
}

template<class T>
class GMPGetterCallback
{
public:
  GMPGetterCallback() { MOZ_COUNT_CTOR(GMPGetterCallback<T>); }
  virtual ~GMPGetterCallback() { MOZ_COUNT_DTOR(GMPGetterCallback<T>); }
  virtual void Done(T*) = 0;
};
template<class T>
class GMPVideoGetterCallback
{
public:
  GMPVideoGetterCallback() { MOZ_COUNT_CTOR(GMPVideoGetterCallback<T>); }
  virtual ~GMPVideoGetterCallback() { MOZ_COUNT_DTOR(GMPVideoGetterCallback<T>); }
  virtual void Done(T*, GMPVideoHost*) = 0;
};
typedef GMPGetterCallback<GMPDecryptorProxy> GetGMPDecryptorCallback;
typedef GMPVideoGetterCallback<GMPVideoDecoderProxy> GetGMPVideoDecoderCallback;
typedef GMPVideoGetterCallback<GMPVideoEncoderProxy> GetGMPVideoEncoderCallback;
class GetNodeIdCallback
{
public:
  GetNodeIdCallback() { MOZ_COUNT_CTOR(GetNodeIdCallback); }
  virtual ~GetNodeIdCallback() { MOZ_COUNT_DTOR(GetNodeIdCallback); }
  virtual void Done(nsresult aResult, const nsACString& aNodeId) = 0;
};
%}

[ptr] native TagArray(nsTArray<nsCString>);
native GetGMPDecryptorCallback(mozilla::UniquePtr<GetGMPDecryptorCallback>&&);
native GetGMPVideoDecoderCallback(mozilla::UniquePtr<GetGMPVideoDecoderCallback>&&);
native GetGMPVideoEncoderCallback(mozilla::UniquePtr<GetGMPVideoEncoderCallback>&&);
native GetNodeIdCallback(mozilla::UniquePtr<GetNodeIdCallback>&&);
native GMPCrashHelperPtr(mozilla::GMPCrashHelper*);

[scriptable, uuid(44d362ae-937a-4803-bee6-f2512a0149d1)]
interface mozIGeckoMediaPluginService : nsISupports
{

  /**
   * The GMP thread. Callable from any thread.
   */
  readonly attribute nsIThread thread;

  /**
   * Run through windows registered registered for pluginId, sending
   * 'PluginCrashed' chrome-only event
   */
  void RunPluginCrashCallbacks(in unsigned long pluginId, in ACString pluginName);

  /**
   * Get a plugin that supports the specified tags.
   * Callable on any thread
   */
  [noscript]
  boolean hasPluginForAPI(in ACString api, in TagArray tags);

  /**
   * Get a video decoder that supports the specified tags.
   * The array of tags should at least contain a codec tag, and optionally
   * other tags such as for EME keysystem.
   * Callable only on GMP thread.
   * This is an asynchronous operation, the Done method of the callback object
   * will be called on the GMP thread with the result (which might be null in
   * the case of failure). This method always takes ownership of the callback
   * object, but if this method returns an error then the Done method of the
   * callback object will not be called at all.
   */
  [noscript]
  void getGMPVideoDecoder(in GMPCrashHelperPtr helper,
                          in TagArray tags,
                          [optional] in ACString nodeId,
                          in GetGMPVideoDecoderCallback callback);

  /**
   * Gets a video decoder as per getGMPVideoDecoder, except it is linked to
   * with a corresponding GMPDecryptor via the decryptor's ID.
   * This is a temporary measure, until we can implement a Chromium CDM
   * GMP protocol which does both decryption and decoding.
   */
  [noscript]
  void getDecryptingGMPVideoDecoder(in GMPCrashHelperPtr helper,
                                    in TagArray tags,
                                    in ACString nodeId,
                                    in GetGMPVideoDecoderCallback callback,
                                    in uint32_t decryptorId);

  /**
   * Get a video encoder that supports the specified tags.
   * The array of tags should at least contain a codec tag, and optionally
   * other tags.
   * Callable only on GMP thread.
   * This is an asynchronous operation, the Done method of the callback object
   * will be called on the GMP thread with the result (which might be null in
   * the case of failure). This method always takes ownership of the callback
   * object, but if this method returns an error then the Done method of the
   * callback object will not be called at all.
   */
  [noscript]
  void getGMPVideoEncoder(in GMPCrashHelperPtr helper,
                          in TagArray tags,
                          [optional] in ACString nodeId,
                          in GetGMPVideoEncoderCallback callback);

  /**
   * Gets the NodeId for a (origin, urlbarOrigin) pair.
   */
  [noscript]
  void getNodeId(in AString origin,
                 in AString topLevelOrigin,
                 in AString gmpName,
                 in GetNodeIdCallback callback);
};
