NuPlayerDecoder.h revision 1cd139824b2e6832f239cd27d8962d3239053c02 
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;
29
30struct NuPlayer::Decoder : public AHandler {
31    Decoder(const sp<AMessage> &notify,
32            const sp<NativeWindowWrapper> &nativeWindow = NULL);
33
34    void configure(const sp<AMessage> &format);
35    void init();
36
37    void signalFlush();
38    void signalResume();
39    void initiateShutdown();
40
41    bool supportsSeamlessFormatChange(const sp<AMessage> &to) const;
42
43    enum {
44        kWhatFillThisBuffer      = 'flTB',
45        kWhatDrainThisBuffer     = 'drTB',
46        kWhatOutputFormatChanged = 'fmtC',
47        kWhatFlushCompleted      = 'flsC',
48        kWhatShutdownCompleted   = 'shDC',
49        kWhatEOS                 = 'eos ',
50        kWhatError               = 'err ',
51    };
52
53protected:
54
55    virtual ~Decoder();
56
57    virtual void onMessageReceived(const sp<AMessage> &msg);
58
59private:
60    enum {
61        kWhatCodecNotify        = 'cdcN',
62        kWhatConfigure          = 'conf',
63        kWhatInputBufferFilled  = 'inpF',
64        kWhatRenderBuffer       = 'rndr',
65        kWhatFlush              = 'flus',
66        kWhatShutdown           = 'shuD',
67    };
68
69    sp<AMessage> mNotify;
70    sp<NativeWindowWrapper> mNativeWindow;
71
72    sp<AMessage> mInputFormat;
73    sp<AMessage> mOutputFormat;
74    sp<MediaCodec> mCodec;
75    sp<ALooper> mCodecLooper;
76    sp<ALooper> mDecoderLooper;
77
78    Vector<sp<ABuffer> > mInputBuffers;
79    Vector<sp<ABuffer> > mOutputBuffers;
80
81    void handleError(int32_t err);
82    bool handleAnInputBuffer();
83    bool handleAnOutputBuffer();
84
85    void requestCodecNotification();
86    bool isStaleReply(const sp<AMessage> &msg);
87
88    void onConfigure(const sp<AMessage> &format);
89    void onFlush();
90    void onInputBufferFilled(const sp<AMessage> &msg);
91    void onRenderBuffer(const sp<AMessage> &msg);
92    void onShutdown();
93
94    int32_t mBufferGeneration;
95    AString mComponentName;
96
97    bool supportsSeamlessAudioFormatChange(const sp<AMessage> &targetFormat) const;
98
99    DISALLOW_EVIL_CONSTRUCTORS(Decoder);
100};
101
102}  // namespace android
103
104#endif  // NUPLAYER_DECODER_H_
105