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 #ifndef VPX_VP8_COMMON_LOOPFILTER_H_ 12 #define VPX_VP8_COMMON_LOOPFILTER_H_ 13 14 #include "vpx_ports/mem.h" 15 #include "vpx_config.h" 16 #include "vp8_rtcd.h" 17 18 #ifdef __cplusplus 19 extern "C" { 20 #endif 21 22 #define MAX_LOOP_FILTER 63 23 /* fraction of total macroblock rows to be used in fast filter level picking */ 24 /* has to be > 2 */ 25 #define PARTIAL_FRAME_FRACTION 8 26 27 typedef enum { NORMAL_LOOPFILTER = 0, SIMPLE_LOOPFILTER = 1 } LOOPFILTERTYPE; 28 29 #if ARCH_ARM 30 #define SIMD_WIDTH 1 31 #else 32 #define SIMD_WIDTH 16 33 #endif 34 35 /* Need to align this structure so when it is declared and 36 * passed it can be loaded into vector registers. 37 */ 38 typedef struct { 39 DECLARE_ALIGNED(SIMD_WIDTH, unsigned char, 40 mblim[MAX_LOOP_FILTER + 1][SIMD_WIDTH]); 41 DECLARE_ALIGNED(SIMD_WIDTH, unsigned char, 42 blim[MAX_LOOP_FILTER + 1][SIMD_WIDTH]); 43 DECLARE_ALIGNED(SIMD_WIDTH, unsigned char, 44 lim[MAX_LOOP_FILTER + 1][SIMD_WIDTH]); 45 DECLARE_ALIGNED(SIMD_WIDTH, unsigned char, hev_thr[4][SIMD_WIDTH]); 46 unsigned char lvl[4][4][4]; 47 unsigned char hev_thr_lut[2][MAX_LOOP_FILTER + 1]; 48 unsigned char mode_lf_lut[10]; 49 } loop_filter_info_n; 50 51 typedef struct loop_filter_info { 52 const unsigned char *mblim; 53 const unsigned char *blim; 54 const unsigned char *lim; 55 const unsigned char *hev_thr; 56 } loop_filter_info; 57 58 typedef void loop_filter_uvfunction(unsigned char *u, /* source pointer */ 59 int p, /* pitch */ 60 const unsigned char *blimit, 61 const unsigned char *limit, 62 const unsigned char *thresh, 63 unsigned char *v); 64 65 /* assorted loopfilter functions which get used elsewhere */ 66 struct VP8Common; 67 struct macroblockd; 68 struct modeinfo; 69 70 void vp8_loop_filter_init(struct VP8Common *cm); 71 72 void vp8_loop_filter_frame_init(struct VP8Common *cm, struct macroblockd *mbd, 73 int default_filt_lvl); 74 75 void vp8_loop_filter_frame(struct VP8Common *cm, struct macroblockd *mbd, 76 int frame_type); 77 78 void vp8_loop_filter_partial_frame(struct VP8Common *cm, 79 struct macroblockd *mbd, 80 int default_filt_lvl); 81 82 void vp8_loop_filter_frame_yonly(struct VP8Common *cm, struct macroblockd *mbd, 83 int default_filt_lvl); 84 85 void vp8_loop_filter_update_sharpness(loop_filter_info_n *lfi, 86 int sharpness_lvl); 87 88 void vp8_loop_filter_row_normal(struct VP8Common *cm, 89 struct modeinfo *mode_info_context, int mb_row, 90 int post_ystride, int post_uvstride, 91 unsigned char *y_ptr, unsigned char *u_ptr, 92 unsigned char *v_ptr); 93 94 void vp8_loop_filter_row_simple(struct VP8Common *cm, 95 struct modeinfo *mode_info_context, int mb_row, 96 int post_ystride, int post_uvstride, 97 unsigned char *y_ptr, unsigned char *u_ptr, 98 unsigned char *v_ptr); 99 #ifdef __cplusplus 100 } // extern "C" 101 #endif 102 103 #endif // VPX_VP8_COMMON_LOOPFILTER_H_ 104