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