vlc_decode.h revision 3306cfee3bf38ab207a0504e49c2d492bb73ffbf 
1/* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
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
13 * express or implied.
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
17 */
18/*
19-------------------------------------------------------------------
20                    MPEG-4 Simple Profile Video Decoder
21-------------------------------------------------------------------
22*
23* This software module was originally developed by
24*
25*   Paulo Nunes (IST / ACTS-MoMuSyS)
26*
27* in the course of development of the MPEG-4 Video (ISO/IEC 14496-2) standard.
28* This software module is an implementation of a part of one or more MPEG-4
29* Video (ISO/IEC 14496-2) tools as specified by the MPEG-4 Video (ISO/IEC
30* 14496-2) standard.
31*
32* ISO/IEC gives users of the MPEG-4 Video (ISO/IEC 14496-2) standard free
33* license to this software module or modifications thereof for use in hardware
34* or software products claiming conformance to the MPEG-4 Video (ISO/IEC
35* 14496-2) standard.
36*
37* Those intending to use this software module in hardware or software products
38* are advised that its use may infringe existing patents. The original
39* developer of this software module and his/her company, the subsequent
40* editors and their companies, and ISO/IEC have no liability for use of this
41* software module or modifications thereof in an implementation. Copyright is
42* not released for non MPEG-4 Video (ISO/IEC 14496-2) Standard conforming
43* products.
44*
45* ACTS-MoMuSys partners retain full right to use the code for his/her own
46* purpose, assign or donate the code to a third party and to inhibit third
47* parties from using the code for non MPEG-4 Video (ISO/IEC 14496-2) Standard
48* conforming products. This copyright notice must be included in all copies or
49* derivative works.
50*
51* Copyright (c) 1996
52*
53*****************************************************************************/
54
55/***********************************************************HeaderBegin*******
56*
57* File: vlc_dec.h
58*
59* Author:   Paulo Nunes (IST) - Paulo.Nunes@lx.it.pt
60* Created:
61*
62* Description: This is the header file for the "vlcdec" module.
63*
64* Notes:
65*
66* Modified: 9-May-96 Paulo Nunes: Reformatted. New headers.
67*
68* ================= PacketVideo Modification ================================
69*
70*       3/30/00  : initial modification to the
71*                new PV-Decoder Lib format.
72*
73***********************************************************CommentEnd********/
74
75
76#ifndef _VLCDECODE_H_
77#define _VLCDECODE_H_
78
79#include "mp4lib_int.h"
80
81#define VLC_ERROR_DETECTED(x) ((x) < 0)
82#define VLC_IO_ERROR    -1
83#define VLC_CODE_ERROR  -2
84#define VLC_MB_STUFFING -4
85#define VLC_NO_LAST_BIT -5
86
87#define VLC_ESCAPE_CODE  7167
88
89#ifdef __cplusplus
90extern "C"
91{
92#endif /* __cplusplus */
93
94    PV_STATUS DecodeUserData(BitstreamDecVideo *stream);
95    PV_STATUS PV_GetMBvectors(VideoDecData *, uint mode);
96    PV_STATUS PV_DecodeMBVec(BitstreamDecVideo *stream, MOT *mv_x, MOT *mv_y, int f_code_f);
97    PV_STATUS PV_DeScaleMVD(int f_code, int residual, int vlc_code_mag,  MOT *vector);
98
99    PV_STATUS PV_VlcDecMV(BitstreamDecVideo *stream, int *mv);
100    int PV_VlcDecMCBPC_com_intra(BitstreamDecVideo *stream);
101    int PV_VlcDecMCBPC_com_inter(BitstreamDecVideo *stream);
102#ifdef PV_ANNEX_IJKT_SUPPORT
103    int PV_VlcDecMCBPC_com_inter_H263(BitstreamDecVideo *stream);
104    PV_STATUS VlcDecTCOEFShortHeader_AnnexI(BitstreamDecVideo *stream, Tcoef *pTcoef);
105    PV_STATUS VlcDecTCOEFShortHeader_AnnexT(BitstreamDecVideo *stream, Tcoef *pTcoef); /* ANNEX_T */
106    PV_STATUS VlcDecTCOEFShortHeader_AnnexIT(BitstreamDecVideo *stream, Tcoef *pTcoef);
107#endif
108    int PV_VlcDecCBPY(BitstreamDecVideo *stream, int intra);
109
110    PV_STATUS VlcDecTCOEFIntra(BitstreamDecVideo *stream, Tcoef *pTcoef);
111    PV_STATUS VlcDecTCOEFInter(BitstreamDecVideo *stream, Tcoef *pTcoef);
112    PV_STATUS VlcDecTCOEFShortHeader(BitstreamDecVideo *stream, Tcoef *pTcoef);
113    PV_STATUS RvlcDecTCOEFIntra(BitstreamDecVideo *stream, Tcoef *pTcoef);
114    PV_STATUS RvlcDecTCOEFInter(BitstreamDecVideo *stream, Tcoef *pTcoef);
115    PV_STATUS PV_VlcDecIntraDCPredSize(BitstreamDecVideo *stream, int compnum, uint *DC_size);
116
117#ifdef __cplusplus
118}
119#endif /* __cplusplus  */
120
121#endif
122
123