Home | History | Annotate | Download | only in src 
      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 (at) 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
     90 extern "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