elements.h
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流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- ***********************************************************************
- * COPYRIGHT AND WARRANTY INFORMATION
- *
- * Copyright 2001, International Telecommunications Union, Geneva
- *
- * DISCLAIMER OF WARRANTY
- *
- * These software programs are available to the user without any
- * license fee or royalty on an "as is" basis. The ITU disclaims
- * any and all warranties, whether express, implied, or
- * statutory, including any implied warranties of merchantability
- * or of fitness for a particular purpose. In no event shall the
- * contributor or the ITU be liable for any incidental, punitive, or
- * consequential damages of any kind whatsoever arising from the
- * use of these programs.
- *
- * This disclaimer of warranty extends to the user of these programs
- * and user's customers, employees, agents, transferees, successors,
- * and assigns.
- *
- * The ITU does not represent or warrant that the programs furnished
- * hereunder are free of infringement of any third-party patents.
- * Commercial implementations of ITU-T Recommendations, including
- * shareware, may be subject to royalty fees to patent holders.
- * Information regarding the ITU-T patent policy is available from
- * the ITU Web site at http://www.itu.int.
- *
- * THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE ITU-T PATENT POLICY.
- ************************************************************************
- */
- /*!
- **************************************************************************
- * file elements.h
- * brief Header file for elements in H.26L streams
- * date 6.10.2000,
- * version
- * 1.1
- *
- * note
- * Version 1.0 included three partition modes, no DP, 2 partitionsper slice
- * and 4 partitions per slice. As per document VCEG-N72 this is changed
- * in version 1.1 to only two patrition modes, one without DP and one with
- * 3 partition per slice
- *.
- * author Sebastian Purreiter <sebastian.purreiter@mch.siemens.de>
- * author Stephan Wenger <stewe@cs.tu-berlin.de>
- *
- **************************************************************************
- */
- #ifndef _ELEMENTS_H_
- #define _ELEMENTS_H_
- #include "global.h"
- /*!
- * definition of H.26L syntax elements
- * order of elements follow dependencies for picture reconstruction
- */
- /*!
- * brief Assignment of old TYPE or 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
- * 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 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
- *
- * -IMPORTANT:
- * Picture- or Sliceheaders must be assigned to partition 0. par
- * Furthermore partitions must follow syntax dependencies as
- * outlined in document Q15-J-23.
- */
- // A note on this table:
- //
- // While the assignment of values in enum data types is specified in C, it is not
- // very ood style to have an "elementnumber", not even as a comment.
- //
- // Hence a copy of the relevant structure from global.h here
- /*
- typedef enum {
- 0 SE_HEADER,
- 1 SE_PTYPE,
- 2 SE_MBTYPE,
- 3 SE_REFFRAME,
- 4 SE_INTRAPREDMODE,
- 5 SE_MVD,
- 6 SE_CBP_INTRA,
- 7 SE_LUM_DC_INTRA,
- 8 SE_CHR_DC_INTRA,
- 9 SE_LUM_AC_INTRA,
- 10 SE_CHR_AC_INTRA,
- 11 SE_CBP_INTER,
- 12 SE_LUM_DC_INTER,
- 13 SE_CHR_DC_INTER,
- 14 SE_LUM_AC_INTER,
- 15 SE_CHR_AC_INTER,
- 16 SE_DELTA_QUANT,
- 17 SE_BFRAME,
- 18 SE_EOS,
- 19 SE_MAX_ELEMENTS */ // number of maximum syntax elements
- //} SE_type;
- static int assignSE2partition[][SE_MAX_ELEMENTS] =
- {
- // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 // elementnumber (no not uncomment)
- { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, //!< all elements in one partition no data partitioning
- { 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 0, 0, 0 } //!< three partitions per slice
- };
- #endif