The Tor Browser: content/media/omx/MediaOmxReader.h@44a2da4a2ab2

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

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

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

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     5  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #if !defined(MediaOmxReader_h_)

     7 #define MediaOmxReader_h_

     9 #include "MediaResource.h"

    10 #include "MediaDecoderReader.h"

    11 #include "nsRect.h"

    12 #include "mozilla/dom/AudioChannelBinding.h"

    13 #include <ui/GraphicBuffer.h>

    14 #include <stagefright/MediaSource.h>

    16 namespace android {

    17 class OmxDecoder;

    18 class MediaExtractor;

    19 }

    21 namespace mozilla {

    23 namespace dom {

    24   class TimeRanges;

    25 }

    27 class AbstractMediaDecoder;

    29 class MediaOmxReader : public MediaDecoderReader

    30 {

    31   nsCString mType;

    32   bool mHasVideo;

    33   bool mHasAudio;

    34   nsIntRect mPicture;

    35   nsIntSize mInitialFrame;

    36   int64_t mVideoSeekTimeUs;

    37   int64_t mAudioSeekTimeUs;

    38   int32_t mSkipCount;

    39   dom::AudioChannel mAudioChannel;

    40   android::sp<android::MediaSource> mAudioOffloadTrack;

    42 protected:

    43   android::sp<android::OmxDecoder> mOmxDecoder;

    44   android::sp<android::MediaExtractor> mExtractor;

    46   // Called by ReadMetadata() during MediaDecoderStateMachine::DecodeMetadata()

    47   // on decode thread. It create and initialize the OMX decoder including

    48   // setting up custom extractor. The extractor provide the essential

    49   // information used for creating OMX decoder such as video/audio codec.

    50   virtual nsresult InitOmxDecoder();

    52 public:

    53   MediaOmxReader(AbstractMediaDecoder* aDecoder);

    54   ~MediaOmxReader();

    56   virtual nsresult Init(MediaDecoderReader* aCloneDonor);

    58   virtual void NotifyDataArrived(const char* aBuffer, uint32_t aLength, int64_t aOffset);

    60   virtual bool DecodeAudioData();

    61   virtual bool DecodeVideoFrame(bool &aKeyframeSkip,

    62                                 int64_t aTimeThreshold);

    64   virtual bool HasAudio()

    65   {

    66     return mHasAudio;

    67   }

    69   virtual bool HasVideo()

    70   {

    71     return mHasVideo;

    72   }

    74   virtual bool IsWaitingMediaResources();

    76   virtual bool IsDormantNeeded();

    77   virtual void ReleaseMediaResources();

    79   virtual void ReleaseDecoder() MOZ_OVERRIDE;

    81   virtual nsresult ReadMetadata(MediaInfo* aInfo,

    82                                 MetadataTags** aTags);

    83   virtual nsresult Seek(int64_t aTime, int64_t aStartTime, int64_t aEndTime, int64_t aCurrentTime);

    85   virtual void SetIdle() MOZ_OVERRIDE;

    86   virtual void SetActive() MOZ_OVERRIDE;

    88   void SetAudioChannel(dom::AudioChannel aAudioChannel) {

    89     mAudioChannel = aAudioChannel;

    90   }

    92   android::sp<android::MediaSource> GetAudioOffloadTrack() {

    93     return mAudioOffloadTrack;

    94   }

    96 #ifdef MOZ_AUDIO_OFFLOAD

    97   // Check whether it is possible to offload current audio track. This access

    98   // canOffloadStream() from libStageFright Utils.cpp, which is not there in

    99   // ANDROID_VERSION < 19

   100   void CheckAudioOffload();

   101 #endif

   103 private:

   104   // This flag is true when SetActive() has been called without a matching

   105   // SetIdle(). This is used to sanity check the SetIdle/SetActive calls, to

   106   // ensure SetActive has been called before a decode call.

   107   DebugOnly<bool> mIsActive;

   108 };

   110 } // namespace mozilla

   112 #endif

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