tor-browser

The Tor Browser
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GMPVideoDecoderProxy.h (2115B)

      1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 #ifndef GMPVideoDecoderProxy_h_
      7 #define GMPVideoDecoderProxy_h_
      8 
      9 #include "GMPCallbackBase.h"
     10 #include "GMPNativeTypes.h"
     11 #include "GMPUtils.h"
     12 #include "gmp-video-decode.h"
     13 #include "gmp-video-frame-encoded.h"
     14 #include "gmp-video-frame-i420.h"
     15 #include "nsTArray.h"
     16 
     17 class GMPVideoDecoderCallbackProxy : public GMPCallbackBase,
     18                                     public GMPVideoDecoderCallback {
     19 public:
     20  virtual ~GMPVideoDecoderCallbackProxy() = default;
     21 };
     22 
     23 // A proxy to GMPVideoDecoder in the child process.
     24 // GMPVideoDecoderParent exposes this to users the GMP.
     25 // This enables Gecko to pass nsTArrays to the child GMP and avoid
     26 // an extra copy when doing so.
     27 
     28 // The consumer must call Close() when done with the codec, or when
     29 // Terminated() is called by the GMP plugin indicating an abnormal shutdown
     30 // of the underlying plugin.  After calling Close(), the consumer must
     31 // not access this again.
     32 
     33 // This interface is not thread-safe and must only be used from GMPThread.
     34 class GMPVideoDecoderProxy {
     35 public:
     36  virtual nsresult InitDecode(const GMPVideoCodec& aCodecSettings,
     37                              const nsTArray<uint8_t>& aCodecSpecific,
     38                              GMPVideoDecoderCallbackProxy* aCallback,
     39                              int32_t aCoreCount) = 0;
     40  virtual nsresult Decode(
     41      mozilla::GMPUniquePtr<GMPVideoEncodedFrame> aInputFrame,
     42      bool aMissingFrames, const nsTArray<uint8_t>& aCodecSpecificInfo,
     43      int64_t aRenderTimeMs = -1) = 0;
     44  virtual nsresult Reset() = 0;
     45  virtual nsresult Drain() = 0;
     46  virtual uint32_t GetPluginId() const = 0;
     47  virtual GMPPluginType GetPluginType() const = 0;
     48 
     49  // Call to tell GMP/plugin the consumer will no longer use this
     50  // interface/codec.
     51  virtual void Close() = 0;
     52 
     53  virtual nsCString GetDisplayName() const = 0;
     54 };
     55 
     56 #endif