65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
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/*!
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**************************************************************************************
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* \file
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* nalucommon.h
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* \brief
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* NALU handling common to encoder and decoder
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* \author
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* Main contributors (see contributors.h for copyright, address and affiliation details)
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* - Stephan Wenger <stewe@cs.tu-berlin.de>
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* - Karsten Suehring <suehring@hhi.de>
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***************************************************************************************
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*/
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#ifndef _NALUCOMMON_H_
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#define _NALUCOMMON_H_
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#define MAXRBSPSIZE 64000
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#define MAXNALUSIZE 64000
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//! values for nal_unit_type
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typedef enum {
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NALU_TYPE_SLICE = 1,
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NALU_TYPE_DPA = 2,
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NALU_TYPE_DPB = 3,
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NALU_TYPE_DPC = 4,
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NALU_TYPE_IDR = 5,
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NALU_TYPE_SEI = 6,
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NALU_TYPE_SPS = 7,
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NALU_TYPE_PPS = 8,
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NALU_TYPE_AUD = 9,
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NALU_TYPE_EOSEQ = 10,
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NALU_TYPE_EOSTREAM = 11,
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NALU_TYPE_FILL = 12
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} NaluType;
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//! values for nal_ref_idc
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typedef enum {
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NALU_PRIORITY_HIGHEST = 3,
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NALU_PRIORITY_HIGH = 2,
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NALU_PRIORITY_LOW = 1,
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NALU_PRIORITY_DISPOSABLE = 0
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} NalRefIdc;
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//! NAL unit structure
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typedef struct nalu_t
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{
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int startcodeprefix_len; //!< 4 for parameter sets and first slice in picture, 3 for everything else (suggested)
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unsigned len; //!< Length of the NAL unit (Excluding the start code, which does not belong to the NALU)
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unsigned max_size; //!< NAL Unit Buffer size
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int forbidden_bit; //!< should be always FALSE
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NaluType nal_unit_type; //!< NALU_TYPE_xxxx
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NalRefIdc nal_reference_idc; //!< NALU_PRIORITY_xxxx
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byte *buf; //!< contains the first byte followed by the EBSP
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uint16 lost_packets; //!< true, if packet loss is detected
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} NALU_t;
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//! allocate one NAL Unit
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extern NALU_t *AllocNALU(int);
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//! free one NAL Unit
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extern void FreeNALU(NALU_t *n);
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#endif
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