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 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