SoftMP3.h revision c71a99131ca97bd3bdc5b78473d06e613e96e073 
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    virtual void onReset();
46
47private:
48    enum {
49        kNumBuffers = 4,
50        kOutputBufferSize = 4608 * 2,
51        kPVMP3DecoderDelay = 529 // frames
52    };
53
54    tPVMP3DecoderExternal *mConfig;
55    void *mDecoderBuf;
56    int64_t mAnchorTimeUs;
57    int64_t mNumFramesOutput;
58
59    int32_t mNumChannels;
60    int32_t mSamplingRate;
61
62    bool mIsFirst;
63    bool mSignalledError;
64    bool mSawInputEos;
65    bool mSignalledOutputEos;
66
67    enum {
68        NONE,
69        AWAITING_DISABLED,
70        AWAITING_ENABLED
71    } mOutputPortSettingsChange;
72
73    void initPorts();
74    void initDecoder();
75
76    DISALLOW_EVIL_CONSTRUCTORS(SoftMP3);
77};
78
79}  // namespace android
80
81#endif  // SOFT_MP3_H_
82
83
84