content/media/omx/MediaOmxReader.h@97036ab72558
content/media/omx/MediaOmxReader.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
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
