CodecInfo.h - mozsearch

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/* 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 https://mozilla.org/MPL/2.0/. */

#ifndef DOM_MEDIA_WEBRTC_WEBRTCCODECINFO_H_

#define DOM_MEDIA_WEBRTC_WEBRTCCODECINFO_H_

#include <memory>

#include "MediaCodecsSupport.h"

#include "PlatformDecoderModule.h"

#include "PlatformEncoderModule.h"

namespace mozilla {

class EncoderConfig;

class MediaExtendedMIMEType;

struct SupportDecoderParams;

// Query the webrtc decoder/encoder factory whether the codec is supported in

// SW and/or HW. These wait for the remote process which would handle the codec

// to report accurate support before resolving. Used by MediaCapabilities.

[[nodiscard]] RefPtr<PlatformDecoderModule::SupportsDecoderPromise>

SupportsVideoDecodeForWebrtc(const MediaExtendedMIMEType& aMime,

                             const SupportDecoderParams& aParams);

[[nodiscard]] RefPtr<PlatformEncoderModule::SupportsEncoderPromise>

SupportsVideoEncodeForWebrtc(const EncoderConfig& aConfig);

// Interface for querying WebRTC codec support and hardware acceleration.

//

// Thread-safe class that samples (static) preferences and gfxVars on creation,

// then makes them available immutably.

//

// The instance caches codec lists based on prefs and hardware flags at

// construction time.

class WebrtcCodecInfo {

 public:

  virtual ~WebrtcCodecInfo() = default;

  // Factory method. Samples preferences and gfxVars.

  [[nodiscard]] static std::unique_ptr<WebrtcCodecInfo> Create();

  // Query the cache if specific MIME type is supported for encoding/decoding.

  [[nodiscard]] virtual bool CheckEncodeType(

      const MediaExtendedMIMEType& aMime) const = 0;

  [[nodiscard]] virtual bool CheckDecodeType(

      const MediaExtendedMIMEType& aMime) const = 0;

};

}  // namespace mozilla

#endif  // DOM_MEDIA_WEBRTC_WEBRTCCODECINFO_H_