PEMFactory.h - mozsearch

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* 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/. */

#if !defined(PEMFactory_h_)

#  define PEMFactory_h_

#  include "PlatformEncoderModule.h"

namespace mozilla {

using PEMCreateEncoderPromise = PlatformEncoderModule::CreateEncoderPromise;

class PEMFactory final {

 public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(PEMFactory)

  PEMFactory();

  // Factory method that creates the appropriate PlatformEncoderModule for

  // the platform we're running on. Caller is responsible for deleting this

  // instance. It's expected that there will be multiple

  // PlatformEncoderModules alive at the same time.

  already_AddRefed<MediaDataEncoder> CreateEncoder(

      const EncoderConfig& aConfig, const RefPtr<TaskQueue>& aTaskQueue);

  RefPtr<PlatformEncoderModule::CreateEncoderPromise> CreateEncoderAsync(

      const EncoderConfig& aConfig, const RefPtr<TaskQueue>& aTaskQueue);

  bool Supports(const EncoderConfig& aConfig) const;

  bool SupportsCodec(CodecType aCodec) const;

 private:

  RefPtr<PlatformEncoderModule::CreateEncoderPromise>

  CheckAndMaybeCreateEncoder(const EncoderConfig& aConfig, uint32_t aIndex,

                             const RefPtr<TaskQueue>& aTaskQueue);

  RefPtr<PlatformEncoderModule::CreateEncoderPromise> CreateEncoderWithPEM(

      PlatformEncoderModule* aPEM, const EncoderConfig& aConfig,

      const RefPtr<TaskQueue>& aTaskQueue);

  virtual ~PEMFactory() = default;

  // Returns the first PEM in our list supporting the codec.

  already_AddRefed<PlatformEncoderModule> FindPEM(

      const EncoderConfig& aConfig) const;

  nsTArray<RefPtr<PlatformEncoderModule>> mCurrentPEMs;

};

}  // namespace mozilla

#endif /* PEMFactory_h_ */