SoftMP3.h revision a98478bfbcc0f7fb4b164d3dce40ca96df75667d 
1/*
2 * Copyright (C) 2011 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 SOFT_MP3_H_
18
19#define SOFT_MP3_H_
20
21#include "SimpleSoftOMXComponent.h"
22
23struct tPVMP3DecoderExternal;
24
25namespace android {
26
27struct SoftMP3 : public SimpleSoftOMXComponent {
28    SoftMP3(const char *name,
29            const OMX_CALLBACKTYPE *callbacks,
30            OMX_PTR appData,
31            OMX_COMPONENTTYPE **component);
32
33protected:
34    virtual ~SoftMP3();
35
36    virtual OMX_ERRORTYPE internalGetParameter(
37            OMX_INDEXTYPE index, OMX_PTR params);
38
39    virtual OMX_ERRORTYPE internalSetParameter(
40            OMX_INDEXTYPE index, const OMX_PTR params);
41
42    virtual void onQueueFilled(OMX_U32 portIndex);
43    virtual void onPortFlushCompleted(OMX_U32 portIndex);
44    virtual void onPortEnableCompleted(OMX_U32 portIndex, bool enabled);
45
46private:
47    enum {
48        kNumBuffers = 4,
49        kOutputBufferSize = 4608 * 2,
50        kPVMP3DecoderDelay = 529 // frames
51    };
52
53    tPVMP3DecoderExternal *mConfig;
54    void *mDecoderBuf;
55    int64_t mAnchorTimeUs;
56    int64_t mNumFramesOutput;
57
58    int32_t mNumChannels;
59    int32_t mSamplingRate;
60
61    bool mIsFirst;
62    bool mSignalledError;
63
64    enum {
65        NONE,
66        AWAITING_DISABLED,
67        AWAITING_ENABLED
68    } mOutputPortSettingsChange;
69
70    void initPorts();
71    void initDecoder();
72
73    DISALLOW_EVIL_CONSTRUCTORS(SoftMP3);
74};
75
76}  // namespace android
77
78#endif  // SOFT_MP3_H_
79
80
81