1/*
2 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11
12#ifndef VP8_COMMON_LOOPFILTER_H_
13#define VP8_COMMON_LOOPFILTER_H_
14
15#include "vpx_ports/mem.h"
16#include "vpx_config.h"
17#include "vp8_rtcd.h"
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
23#define MAX_LOOP_FILTER             63
24/* fraction of total macroblock rows to be used in fast filter level picking */
25/* has to be > 2 */
26#define PARTIAL_FRAME_FRACTION      8
27
28typedef enum
29{
30    NORMAL_LOOPFILTER = 0,
31    SIMPLE_LOOPFILTER = 1
32} LOOPFILTERTYPE;
33
34#if ARCH_ARM
35#define SIMD_WIDTH 1
36#else
37#define SIMD_WIDTH 16
38#endif
39
40/* Need to align this structure so when it is declared and
41 * passed it can be loaded into vector registers.
42 */
43typedef struct
44{
45    DECLARE_ALIGNED(SIMD_WIDTH, unsigned char, mblim[MAX_LOOP_FILTER + 1][SIMD_WIDTH]);
46    DECLARE_ALIGNED(SIMD_WIDTH, unsigned char, blim[MAX_LOOP_FILTER + 1][SIMD_WIDTH]);
47    DECLARE_ALIGNED(SIMD_WIDTH, unsigned char, lim[MAX_LOOP_FILTER + 1][SIMD_WIDTH]);
48    DECLARE_ALIGNED(SIMD_WIDTH, unsigned char, hev_thr[4][SIMD_WIDTH]);
49    unsigned char lvl[4][4][4];
50    unsigned char hev_thr_lut[2][MAX_LOOP_FILTER + 1];
51    unsigned char mode_lf_lut[10];
52} loop_filter_info_n;
53
54typedef struct loop_filter_info
55{
56    const unsigned char * mblim;
57    const unsigned char * blim;
58    const unsigned char * lim;
59    const unsigned char * hev_thr;
60} loop_filter_info;
61
62
63typedef void loop_filter_uvfunction
64(
65    unsigned char *u,   /* source pointer */
66    int p,              /* pitch */
67    const unsigned char *blimit,
68    const unsigned char *limit,
69    const unsigned char *thresh,
70    unsigned char *v
71);
72
73/* assorted loopfilter functions which get used elsewhere */
74struct VP8Common;
75struct macroblockd;
76struct modeinfo;
77
78void vp8_loop_filter_init(struct VP8Common *cm);
79
80void vp8_loop_filter_frame_init(struct VP8Common *cm,
81                                struct macroblockd *mbd,
82                                int default_filt_lvl);
83
84void vp8_loop_filter_frame(struct VP8Common *cm, struct macroblockd *mbd,
85                           int frame_type);
86
87void vp8_loop_filter_partial_frame(struct VP8Common *cm,
88                                   struct macroblockd *mbd,
89                                   int default_filt_lvl);
90
91void vp8_loop_filter_frame_yonly(struct VP8Common *cm,
92                                 struct macroblockd *mbd,
93                                 int default_filt_lvl);
94
95void vp8_loop_filter_update_sharpness(loop_filter_info_n *lfi,
96                                      int sharpness_lvl);
97
98void vp8_loop_filter_row_normal(struct VP8Common *cm,
99                                struct modeinfo *mode_info_context,
100                                int mb_row, int post_ystride, int post_uvstride,
101                                unsigned char *y_ptr, unsigned char *u_ptr,
102                                unsigned char *v_ptr);
103
104void vp8_loop_filter_row_simple(struct VP8Common *cm,
105                                struct modeinfo *mode_info_context,
106                                int mb_row, int post_ystride, int post_uvstride,
107                                unsigned char *y_ptr, unsigned char *u_ptr,
108                                unsigned char *v_ptr);
109#ifdef __cplusplus
110}  // extern "C"
111#endif
112
113#endif  // VP8_COMMON_LOOPFILTER_H_
114