www.pudn.com > JM.rar > elements.h

 
/*! 
 ************************************************************************************* 
 * \file elements.h 
 * 
 * \brief 
 *    Header file for elements in H.264 streams 
 * 
 * \date 
 *    6.10.2000 
 * 
 * \version 
 *    1.0 
 * 
 *  \author 
 *     Sebastian Purreiter       \n 
 *     Siemens AG, Information and Communication Mobile              \n 
 *     P.O.Box 80 17 07                                              \n 
 *     D-81617 Munich, Germany                                       \n 
 ************************************************************************************* 
 */ 
 
#ifndef _ELEMENTS_H_ 
#define _ELEMENTS_H_ 
 
/*! 
 *  definition of H.264 syntax elements 
 *  order of elements follow dependencies for picture reconstruction 
 */ 
/*! 
 * \brief   Assignment of old TYPE partition elements to new 
 *          elements 
 * 
 *  old element     | new elements 
 *  ----------------+------------------------------------------------------------------- 
 *  TYPE_HEADER     | SE_HEADER, SE_PTYPE 
 *  TYPE_MBHEADER   | SE_MBTYPE, SE_REFFRAME, SE_INTRAPREDMODE 
 *  TYPE_MVD        | SE_MVD 
 *  TYPE_CBP        | SE_CBP_INTRA, SE_CBP_INTER 
 *  SE_DELTA_QUANT_INTER 
 *  SE_DELTA_QUANT_INTRA 
 *  TYPE_COEFF_Y    | SE_LUM_DC_INTRA, SE_LUM_AC_INTRA, SE_LUM_DC_INTER, SE_LUM_AC_INTER 
 *  TYPE_2x2DC      | SE_CHR_DC_INTRA, SE_CHR_DC_INTER 
 *  TYPE_COEFF_C    | SE_CHR_AC_INTRA, SE_CHR_AC_INTER 
 *  TYPE_EOS        | SE_EOS 
*/ 
 
#define SE_HEADER           0 
#define SE_PTYPE            1 
#define SE_MBTYPE           2 
#define SE_REFFRAME         3 
#define SE_INTRAPREDMODE    4 
#define SE_MVD              5 
#define SE_CBP_INTRA        6 
#define SE_LUM_DC_INTRA     7 
#define SE_CHR_DC_INTRA     8 
#define SE_LUM_AC_INTRA     9 
#define SE_CHR_AC_INTRA     10 
#define SE_CBP_INTER        11 
#define SE_LUM_DC_INTER     12 
#define SE_CHR_DC_INTER     13 
#define SE_LUM_AC_INTER     14 
#define SE_CHR_AC_INTER     15 
#define SE_DELTA_QUANT_INTER      16 
#define SE_DELTA_QUANT_INTRA      17 
#define SE_BFRAME           18 
#define SE_EOS              19 
#define SE_MAX_ELEMENTS     20 
 
 
#define NO_EC               0   //!< no error concealment necessary 
#define EC_REQ              1   //!< error concealment required 
#define EC_SYNC             2   //!< search and sync on next header element 
 
#define MAXPARTITIONMODES   2   //!< maximum possible partition modes as defined in assignSE2partition[][] 
 
/*! 
 *  \brief  lookup-table to assign different elements to partition 
 * 
 *  \note   here we defined up to 6 different partitions similar to 
 *          document Q15-k-18 described in the PROGFRAMEMODE. 
 *          The Sliceheader contains the PSYNC information. \par 
 * 
 *          Elements inside a partition are not ordered. They are 
 *          ordered by occurence in the stream. 
 *          Assumption: Only partitionlosses are considered. \par 
 * 
 *          The texture elements luminance and chrominance are 
 *          not ordered in the progressive form 
 *          This may be changed in image.c \par 
 * 
 *          We also defined the proposed internet partition mode 
 *          of Stephan Wenger here. To select the desired mode 
 *          uncomment one of the two following lines. \par 
 * 
 *  -IMPORTANT: 
 *          Picture- or Sliceheaders must be assigned to partition 0. \par 
 *          Furthermore partitions must follow syntax dependencies as 
 *          outlined in document Q15-J-23. 
 */ 
 
 
extern int assignSE2partition[][SE_MAX_ELEMENTS]; 
extern int PartitionMode; 
 
#endif