NuPlayerDecoder.h revision 095248375e29adde961ec2a44989ecb3a6dda6a2 
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();
40    virtual void signalResume();
41    virtual void initiateShutdown();
42
43    virtual bool supportsSeamlessFormatChange(const sp<AMessage> &to) const;
44
45    enum {
46        kWhatFillThisBuffer      = 'flTB',
47        kWhatDrainThisBuffer     = 'drTB',
48        kWhatOutputFormatChanged = 'fmtC',
49        kWhatFlushCompleted      = 'flsC',
50        kWhatShutdownCompleted   = 'shDC',
51        kWhatEOS                 = 'eos ',
52        kWhatError               = 'err ',
53    };
54
55protected:
56
57    virtual ~Decoder();
58
59    virtual void onMessageReceived(const sp<AMessage> &msg);
60
61private:
62    enum {
63        kWhatCodecNotify        = 'cdcN',
64        kWhatConfigure          = 'conf',
65        kWhatGetInputBuffers    = 'gInB',
66        kWhatInputBufferFilled  = 'inpF',
67        kWhatRenderBuffer       = 'rndr',
68        kWhatFlush              = 'flus',
69        kWhatShutdown           = 'shuD',
70    };
71
72    sp<AMessage> mNotify;
73    sp<NativeWindowWrapper> mNativeWindow;
74
75    sp<AMessage> mInputFormat;
76    sp<AMessage> mOutputFormat;
77    sp<MediaCodec> mCodec;
78    sp<ALooper> mCodecLooper;
79    sp<ALooper> mDecoderLooper;
80
81    Vector<sp<ABuffer> > mInputBuffers;
82    Vector<sp<ABuffer> > mOutputBuffers;
83    Vector<bool> mInputBufferIsDequeued;
84    Vector<MediaBuffer *> mMediaBuffers;
85
86    void handleError(int32_t err);
87    bool handleAnInputBuffer();
88    bool handleAnOutputBuffer();
89
90    void releaseAndResetMediaBuffers();
91    void requestCodecNotification();
92    bool isStaleReply(const sp<AMessage> &msg);
93
94    void onConfigure(const sp<AMessage> &format);
95    void onFlush();
96    void onResume();
97    void onInputBufferFilled(const sp<AMessage> &msg);
98    void onRenderBuffer(const sp<AMessage> &msg);
99    void onShutdown();
100
101    int32_t mBufferGeneration;
102    bool mPaused;
103    AString mComponentName;
104
105    bool supportsSeamlessAudioFormatChange(const sp<AMessage> &targetFormat) const;
106
107    DISALLOW_EVIL_CONSTRUCTORS(Decoder);
108};
109
110struct NuPlayer::CCDecoder : public RefBase {
111    enum {
112        kWhatClosedCaptionData,
113        kWhatTrackAdded,
114    };
115
116    CCDecoder(const sp<AMessage> &notify);
117
118    size_t getTrackCount() const;
119    sp<AMessage> getTrackInfo(size_t index) const;
120    status_t selectTrack(size_t index, bool select);
121    bool isSelected() const;
122    void decode(const sp<ABuffer> &accessUnit);
123    void display(int64_t timeUs);
124
125private:
126    struct CCData;
127
128    sp<AMessage> mNotify;
129    KeyedVector<int64_t, sp<ABuffer> > mCCMap;
130    size_t mTrackCount;
131    int32_t mSelectedTrack;
132
133    bool isNullPad(CCData *cc) const;
134    void dumpBytePair(const sp<ABuffer> &ccBuf) const;
135    bool extractFromSEI(const sp<ABuffer> &accessUnit);
136
137    DISALLOW_EVIL_CONSTRUCTORS(CCDecoder);
138};
139
140}  // namespace android
141
142#endif  // NUPLAYER_DECODER_H_
143