28 lines
766 B
C
28 lines
766 B
C
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#if !defined(_enquant_H)
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# define _enquant_H (1)
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# include "quant.h"
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typedef struct oc_iquant oc_iquant;
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#define OC_QUANT_MAX_LOG (OC_Q57(OC_STATIC_ILOG_32(OC_QUANT_MAX)-1))
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/*Used to compute x/d via ((x*m>>16)+x>>l)+(x<0))
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(i.e., one 16x16->16 mul, 2 shifts, and 2 adds).
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This is not an approximation; for 16-bit x and d, it is exact.*/
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struct oc_iquant{
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ogg_int16_t m;
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ogg_int16_t l;
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};
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typedef oc_iquant oc_iquant_table[64];
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void oc_quant_params_pack(oggpack_buffer *_opb,const th_quant_info *_qinfo);
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void oc_enquant_tables_init(ogg_uint16_t *_dequant[64][3][2],
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oc_iquant *_enquant[64][3][2],const th_quant_info *_qinfo);
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void oc_enquant_qavg_init(ogg_int64_t _log_qavg[2][64],
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ogg_uint16_t *_dequant[64][3][2],int _pixel_fmt);
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#endif
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