SoftAVC.h revision 2309d1a1ff016a31d9aa68272bcb471e64a26cfa 
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_AVC_H_
18
19#define SOFT_AVC_H_
20
21#include "SoftVideoDecoderOMXComponent.h"
22#include <utils/KeyedVector.h>
23
24#include "H264SwDecApi.h"
25#include "basetype.h"
26
27namespace android {
28
29struct SoftAVC : public SoftVideoDecoderOMXComponent {
30    SoftAVC(const char *name,
31            const OMX_CALLBACKTYPE *callbacks,
32            OMX_PTR appData,
33            OMX_COMPONENTTYPE **component);
34
35protected:
36    virtual ~SoftAVC();
37
38    virtual void onQueueFilled(OMX_U32 portIndex);
39    virtual void onPortFlushCompleted(OMX_U32 portIndex);
40    virtual void onReset();
41
42private:
43    enum {
44        kNumInputBuffers  = 8,
45        kNumOutputBuffers = 2,
46    };
47
48    enum EOSStatus {
49        INPUT_DATA_AVAILABLE,
50        INPUT_EOS_SEEN,
51        OUTPUT_FRAMES_FLUSHED,
52    };
53
54    void *mHandle;
55
56    size_t mInputBufferCount;
57
58    uint32_t mPictureSize;
59
60    uint8_t *mFirstPicture;
61    int32_t mFirstPictureId;
62
63    int32_t mPicId;  // Which output picture is for which input buffer?
64
65    // OMX_BUFFERHEADERTYPE may be overkill, but it is convenient
66    // for tracking the following fields: nFlags, nTimeStamp, etc.
67    KeyedVector<int32_t, OMX_BUFFERHEADERTYPE *> mPicToHeaderMap;
68    bool mHeadersDecoded;
69
70    EOSStatus mEOSStatus;
71
72    bool mSignalledError;
73
74    status_t initDecoder();
75    void drainAllOutputBuffers(bool eos);
76    void drainOneOutputBuffer(int32_t picId, uint8_t *data);
77    void saveFirstOutputBuffer(int32_t pidId, uint8_t *data);
78    bool handleCropRectEvent(const CropParams* crop);
79    bool handlePortSettingChangeEvent(const H264SwDecInfo *info);
80
81    DISALLOW_EVIL_CONSTRUCTORS(SoftAVC);
82};
83
84}  // namespace android
85
86#endif  // SOFT_AVC_H_
87
88