NuPlayerDecoder.h revision 87603c0dd1f4e62e52feffa8d6e960ad21f68893 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef NUPLAYER_DECODER_H_
18
19#define NUPLAYER_DECODER_H_
20
21#include "NuPlayer.h"
22
23#include <media/stagefright/foundation/AHandler.h>
24
25namespace android {
26
27struct ABuffer;
28struct MediaCodec;
29struct MediaBuffer;
30
31struct NuPlayer::Decoder : public AHandler {
32    Decoder(const sp<AMessage> &notify,
33            const sp<NativeWindowWrapper> &nativeWindow = NULL);
34
35    virtual void configure(const sp<AMessage> &format);
36    virtual void init();
37
38    status_t getInputBuffers(Vector<sp<ABuffer> > *dstBuffers) const;
39    virtual void signalFlush(const sp<AMessage> &format = NULL);
40    virtual void signalUpdateFormat(const sp<AMessage> &format);
41    virtual void signalResume();
42    virtual void initiateShutdown();
43
44    virtual bool supportsSeamlessFormatChange(const sp<AMessage> &to) const;
45
46    enum {
47        kWhatFillThisBuffer      = 'flTB',
48        kWhatDrainThisBuffer     = 'drTB',
49        kWhatOutputFormatChanged = 'fmtC',
50        kWhatFlushCompleted      = 'flsC',
51        kWhatShutdownCompleted   = 'shDC',
52        kWhatEOS                 = 'eos ',
53        kWhatError               = 'err ',
54    };
55
56protected:
57
58    virtual ~Decoder();
59
60    virtual void onMessageReceived(const sp<AMessage> &msg);
61
62private:
63    enum {
64        kWhatCodecNotify        = 'cdcN',
65        kWhatConfigure          = 'conf',
66        kWhatGetInputBuffers    = 'gInB',
67        kWhatInputBufferFilled  = 'inpF',
68        kWhatRenderBuffer       = 'rndr',
69        kWhatFlush              = 'flus',
70        kWhatShutdown           = 'shuD',
71        kWhatUpdateFormat       = 'uFmt',
72    };
73
74    sp<AMessage> mNotify;
75    sp<NativeWindowWrapper> mNativeWindow;
76
77    sp<AMessage> mInputFormat;
78    sp<AMessage> mOutputFormat;
79    sp<MediaCodec> mCodec;
80    sp<ALooper> mCodecLooper;
81    sp<ALooper> mDecoderLooper;
82
83    Vector<sp<ABuffer> > mInputBuffers;
84    Vector<sp<ABuffer> > mOutputBuffers;
85    Vector<sp<ABuffer> > mCSDsForCurrentFormat;
86    Vector<sp<ABuffer> > mCSDsToSubmit;
87    Vector<bool> mInputBufferIsDequeued;
88    Vector<MediaBuffer *> mMediaBuffers;
89
90    void handleError(int32_t err);
91    bool handleAnInputBuffer();
92    bool handleAnOutputBuffer();
93
94    void releaseAndResetMediaBuffers();
95    void requestCodecNotification();
96    bool isStaleReply(const sp<AMessage> &msg);
97
98    void onConfigure(const sp<AMessage> &format);
99    void onFlush();
100    void onResume();
101    void onInputBufferFilled(const sp<AMessage> &msg);
102    void onRenderBuffer(const sp<AMessage> &msg);
103    void onShutdown();
104
105    int32_t mBufferGeneration;
106    bool mPaused;
107    AString mComponentName;
108
109    bool supportsSeamlessAudioFormatChange(const sp<AMessage> &targetFormat) const;
110    void rememberCodecSpecificData(const sp<AMessage> &format);
111
112    DISALLOW_EVIL_CONSTRUCTORS(Decoder);
113};
114
115struct NuPlayer::CCDecoder : public RefBase {
116    enum {
117        kWhatClosedCaptionData,
118        kWhatTrackAdded,
119    };
120
121    CCDecoder(const sp<AMessage> &notify);
122
123    size_t getTrackCount() const;
124    sp<AMessage> getTrackInfo(size_t index) const;
125    status_t selectTrack(size_t index, bool select);
126    bool isSelected() const;
127    void decode(const sp<ABuffer> &accessUnit);
128    void display(int64_t timeUs);
129
130private:
131    struct CCData;
132
133    sp<AMessage> mNotify;
134    KeyedVector<int64_t, sp<ABuffer> > mCCMap;
135    size_t mTrackCount;
136    int32_t mSelectedTrack;
137
138    bool isNullPad(CCData *cc) const;
139    void dumpBytePair(const sp<ABuffer> &ccBuf) const;
140    bool extractFromSEI(const sp<ABuffer> &accessUnit);
141
142    DISALLOW_EVIL_CONSTRUCTORS(CCDecoder);
143};
144
145}  // namespace android
146
147#endif  // NUPLAYER_DECODER_H_
148