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- /*------------------------------------------------------------------------------
- -- --
- -- This software is confidential and proprietary and may be used --
- -- only as expressly authorized by a licensing agreement from --
- -- --
- -- Hantro Products Oy. --
- -- --
- -- (C) COPYRIGHT 2006 HANTRO PRODUCTS OY --
- -- ALL RIGHTS RESERVED --
- -- --
- -- The entire notice above must be reproduced --
- -- on all copies and should not be removed. --
- -- --
- --------------------------------------------------------------------------------
- --
- -- Description : MAD threshold calculation
- --
- ------------------------------------------------------------------------------*/
- #ifndef H264_MAD_H
- #define H264_MAD_H
- #include "enccommon.h"
- #define DSCY 32 /* n * 32 */
- #define I32_MAX 2147483647 /* 2 ^ 31 - 1 */
- #define DIV(a, b) (((a) + (SIGN(a) * (b)) / 2) / (b))
- #define MAD_TABLE_LEN 5
- typedef struct {
- i32 a1; /* model parameter, y = a1*x + a2 */
- i32 a2; /* model parameter */
- i32 th[MAD_TABLE_LEN]; /* mad threshold */
- i32 count[MAD_TABLE_LEN]; /* number of macroblocks under threshold */
- i32 pos; /* current position */
- i32 len; /* current lenght */
- i32 threshold; /* current frame threshold */
- i32 mbPerFrame; /* number of macroblocks per frame */
- } madTable_s;
- /*------------------------------------------------------------------------------
- Function prototypes
- ------------------------------------------------------------------------------*/
- void H264MadInit(madTable_s *mad, u32 mbPerFrame);
- void H264MadThreshold(madTable_s *madTable, u32 madCount);
- #endif
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