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