1/*
2* Copyright (c) 2009-2011 Intel Corporation.  All rights reserved.
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 VIDEO_DECODER_MPEG2_H_
18#define VIDEO_DECODER_MPEG2_H_
19
20#include "VideoDecoderBase.h"
21
22#ifndef TIANMI_DEBUG
23#define TIANMI_DEBUG
24#endif
25
26
27class VideoDecoderMPEG2 : public VideoDecoderBase {
28public:
29    VideoDecoderMPEG2(const char *mimeType);
30    virtual ~VideoDecoderMPEG2();
31
32    virtual Decode_Status start(VideoConfigBuffer *buffer);
33    virtual void stop(void);
34    virtual void flush(void);
35    virtual Decode_Status decode(VideoDecodeBuffer *buffer);
36
37protected:
38    virtual Decode_Status checkHardwareCapability();
39
40private:
41    Decode_Status decodeFrame(VideoDecodeBuffer *buffer, vbp_data_mpeg2 *data);
42    //Decode_Status beginDecodingFrame(vbp_data_mp42 *data);
43    //Decode_Status continueDecodingFrame(vbp_data_mp42 *data);
44    Decode_Status decodePicture(vbp_data_mpeg2 *data, int picIndex);
45    Decode_Status decodeSlice(vbp_data_mpeg2 *data, int picIndex, int slcIndex);
46    Decode_Status setReference(VAPictureParameterBufferMPEG2 *picParam);
47    Decode_Status startVA(vbp_data_mpeg2 *data);
48    void updateFormatInfo(vbp_data_mpeg2 *data);
49    inline Decode_Status allocateVABufferIDs(int32_t number);
50
51private:
52    enum {
53        MPEG2_PICTURE_TYPE_I = 1,
54        MPEG2_PICTURE_TYPE_P = 2,
55        MPEG2_PICTURE_TYPE_B = 3
56    };
57
58    enum {
59        MPEG2_PIC_STRUCT_TOP       = 1,
60        MPEG2_PIC_STRUCT_BOTTOM    = 2,
61        MPEG2_PIC_STRUCT_FRAME     = 3
62    };
63
64    enum {
65        MPEG2_SURFACE_NUMBER = 10,
66    };
67
68    VABufferID *mBufferIDs;
69    int32_t mNumBufferIDs;
70};
71
72#endif /* VIDEO_DECODER_MPEG2_H_ */
73