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 VP9_COMMON_VP9_LOOPFILTER_H_ 12#define VP9_COMMON_VP9_LOOPFILTER_H_ 13 14#include "vpx_ports/mem.h" 15#include "./vpx_config.h" 16 17#include "vp9/common/vp9_blockd.h" 18#include "vp9/common/vp9_seg_common.h" 19 20#ifdef __cplusplus 21extern "C" { 22#endif 23 24#define MAX_LOOP_FILTER 63 25#define MAX_SHARPNESS 7 26 27#define SIMD_WIDTH 16 28 29#define MAX_REF_LF_DELTAS 4 30#define MAX_MODE_LF_DELTAS 2 31 32struct loopfilter { 33 int filter_level; 34 35 int sharpness_level; 36 int last_sharpness_level; 37 38 uint8_t mode_ref_delta_enabled; 39 uint8_t mode_ref_delta_update; 40 41 // 0 = Intra, Last, GF, ARF 42 signed char ref_deltas[MAX_REF_LF_DELTAS]; 43 signed char last_ref_deltas[MAX_REF_LF_DELTAS]; 44 45 // 0 = ZERO_MV, MV 46 signed char mode_deltas[MAX_MODE_LF_DELTAS]; 47 signed char last_mode_deltas[MAX_MODE_LF_DELTAS]; 48}; 49 50// Need to align this structure so when it is declared and 51// passed it can be loaded into vector registers. 52typedef struct { 53 DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, mblim[SIMD_WIDTH]); 54 DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, lim[SIMD_WIDTH]); 55 DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, hev_thr[SIMD_WIDTH]); 56} loop_filter_thresh; 57 58typedef struct { 59 loop_filter_thresh lfthr[MAX_LOOP_FILTER + 1]; 60 uint8_t lvl[MAX_SEGMENTS][MAX_REF_FRAMES][MAX_MODE_LF_DELTAS]; 61} loop_filter_info_n; 62 63// This structure holds bit masks for all 8x8 blocks in a 64x64 region. 64// Each 1 bit represents a position in which we want to apply the loop filter. 65// Left_ entries refer to whether we apply a filter on the border to the 66// left of the block. Above_ entries refer to whether or not to apply a 67// filter on the above border. Int_ entries refer to whether or not to 68// apply borders on the 4x4 edges within the 8x8 block that each bit 69// represents. 70// Since each transform is accompanied by a potentially different type of 71// loop filter there is a different entry in the array for each transform size. 72typedef struct { 73 uint64_t left_y[TX_SIZES]; 74 uint64_t above_y[TX_SIZES]; 75 uint64_t int_4x4_y; 76 uint16_t left_uv[TX_SIZES]; 77 uint16_t above_uv[TX_SIZES]; 78 uint16_t int_4x4_uv; 79 uint8_t lfl_y[64]; 80 uint8_t lfl_uv[16]; 81} LOOP_FILTER_MASK; 82 83/* assorted loopfilter functions which get used elsewhere */ 84struct VP9Common; 85struct macroblockd; 86struct VP9LfSyncData; 87 88// This function sets up the bit masks for the entire 64x64 region represented 89// by mi_row, mi_col. 90void vp9_setup_mask(struct VP9Common *const cm, 91 const int mi_row, const int mi_col, 92 MODE_INFO **mi_8x8, const int mode_info_stride, 93 LOOP_FILTER_MASK *lfm); 94 95void vp9_filter_block_plane(struct VP9Common *const cm, 96 struct macroblockd_plane *const plane, 97 int mi_row, 98 LOOP_FILTER_MASK *lfm); 99 100void vp9_loop_filter_init(struct VP9Common *cm); 101 102// Update the loop filter for the current frame. 103// This should be called before vp9_loop_filter_rows(), vp9_loop_filter_frame() 104// calls this function directly. 105void vp9_loop_filter_frame_init(struct VP9Common *cm, int default_filt_lvl); 106 107void vp9_loop_filter_frame(struct VP9Common *cm, 108 struct macroblockd *mbd, 109 int filter_level, 110 int y_only, int partial_frame); 111 112// Apply the loop filter to [start, stop) macro block rows in frame_buffer. 113void vp9_loop_filter_rows(const YV12_BUFFER_CONFIG *frame_buffer, 114 struct VP9Common *cm, struct macroblockd *xd, 115 int start, int stop, int y_only); 116 117typedef struct LoopFilterWorkerData { 118 const YV12_BUFFER_CONFIG *frame_buffer; 119 struct VP9Common *cm; 120 struct macroblockd xd; // TODO(jzern): most of this is unnecessary to the 121 // loopfilter. the planes are necessary as their state 122 // is changed during decode. 123 int start; 124 int stop; 125 int y_only; 126 127 struct VP9LfSyncData *lf_sync; 128 int num_lf_workers; 129} LFWorkerData; 130 131// Operates on the rows described by LFWorkerData passed as 'arg1'. 132int vp9_loop_filter_worker(void *arg1, void *arg2); 133#ifdef __cplusplus 134} // extern "C" 135#endif 136 137#endif // VP9_COMMON_VP9_LOOPFILTER_H_ 138