/* *  Copyright (c) 2010 The WebM project authors. All Rights Reserved. * *  Use of this source code is governed by a BSD-style license *  that can be found in the LICENSE file in the root of the source *  tree. An additional intellectual property rights grant can be found *  in the file PATENTS.  All contributing project authors may *  be found in the AUTHORS file in the root of the source tree. */ #ifndef VPX_VP9_COMMON_VP9_LOOPFILTER_H_#define VPX_VP9_COMMON_VP9_LOOPFILTER_H_ #include "vpx_ports/mem.h"#include "./vpx_config.h" #include "vp9/common/vp9_blockd.h"#include "vp9/common/vp9_seg_common.h" #ifdef __cplusplusextern "C" {#endif #define MAX_LOOP_FILTER 63#define MAX_SHARPNESS 7 #define SIMD_WIDTH 16 #define MAX_REF_LF_DELTAS 4#define MAX_MODE_LF_DELTAS 2 enum lf_path {  LF_PATH_420,  LF_PATH_444,  LF_PATH_SLOW,}; // Need to align this structure so when it is declared and// passed it can be loaded into vector registers.typedef struct {  DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, mblim[SIMD_WIDTH]);  DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, lim[SIMD_WIDTH]);  DECLARE_ALIGNED(SIMD_WIDTH, uint8_t, hev_thr[SIMD_WIDTH]);} loop_filter_thresh; typedef struct {  loop_filter_thresh lfthr[MAX_LOOP_FILTER + 1];  uint8_t lvl[MAX_SEGMENTS][MAX_REF_FRAMES][MAX_MODE_LF_DELTAS];} loop_filter_info_n; // This structure holds bit masks for all 8x8 blocks in a 64x64 region.// Each 1 bit represents a position in which we want to apply the loop filter.// Left_ entries refer to whether we apply a filter on the border to the// left of the block.   Above_ entries refer to whether or not to apply a// filter on the above border.   Int_ entries refer to whether or not to// apply borders on the 4x4 edges within the 8x8 block that each bit// represents.// Since each transform is accompanied by a potentially different type of// loop filter there is a different entry in the array for each transform size.typedef struct {  uint64_t left_y[TX_SIZES];  uint64_t above_y[TX_SIZES];  uint64_t int_4x4_y;  uint16_t left_uv[TX_SIZES];  uint16_t above_uv[TX_SIZES];  uint16_t int_4x4_uv;  uint8_t lfl_y[64];} LOOP_FILTER_MASK; struct loopfilter {  int filter_level;  int last_filt_level;   int sharpness_level;  int last_sharpness_level;   uint8_t mode_ref_delta_enabled;  uint8_t mode_ref_delta_update;   // 0 = Intra, Last, GF, ARF  signed char ref_deltas[MAX_REF_LF_DELTAS];  signed char last_ref_deltas[MAX_REF_LF_DELTAS];   // 0 = ZERO_MV, MV  signed char mode_deltas[MAX_MODE_LF_DELTAS];  signed char last_mode_deltas[MAX_MODE_LF_DELTAS];   LOOP_FILTER_MASK *lfm;  int lfm_stride;}; /* assorted loopfilter functions which get used elsewhere */struct VP9Common;struct macroblockd;struct VP9LfSyncData; // This function sets up the bit masks for the entire 64x64 region represented// by mi_row, mi_col.void vp9_setup_mask(struct VP9Common *const cm, const int mi_row,                    const int mi_col, MODE_INFO **mi8x8,                    const int mode_info_stride, LOOP_FILTER_MASK *lfm); void vp9_filter_block_plane_ss00(struct VP9Common *const cm,                                 struct macroblockd_plane *const plane,                                 int mi_row, LOOP_FILTER_MASK *lfm); void vp9_filter_block_plane_ss11(struct VP9Common *const cm,                                 struct macroblockd_plane *const plane,                                 int mi_row, LOOP_FILTER_MASK *lfm); void vp9_filter_block_plane_non420(struct VP9Common *cm,                                   struct macroblockd_plane *plane,                                   MODE_INFO **mi_8x8, int mi_row, int mi_col); void vp9_loop_filter_init(struct VP9Common *cm); // Update the loop filter for the current frame.// This should be called before vp9_loop_filter_frame(), vp9_build_mask_frame()// calls this function directly.void vp9_loop_filter_frame_init(struct VP9Common *cm, int default_filt_lvl); void vp9_loop_filter_frame(YV12_BUFFER_CONFIG *frame, struct VP9Common *cm,                           struct macroblockd *xd, int frame_filter_level,                           int y_only, int partial_frame); // Get the superblock lfm for a given mi_row, mi_col.static INLINE LOOP_FILTER_MASK *get_lfm(const struct loopfilter *lf,                                        const int mi_row, const int mi_col) {  return &lf->lfm[(mi_col >> 3) + ((mi_row >> 3) * lf->lfm_stride)];} void vp9_build_mask(struct VP9Common *cm, const MODE_INFO *mi, int mi_row,                    int mi_col, int bw, int bh);void vp9_adjust_mask(struct VP9Common *const cm, const int mi_row,                     const int mi_col, LOOP_FILTER_MASK *lfm);void vp9_build_mask_frame(struct VP9Common *cm, int frame_filter_level,                          int partial_frame);void vp9_reset_lfm(struct VP9Common *const cm); typedef struct LoopFilterWorkerData {  YV12_BUFFER_CONFIG *frame_buffer;  struct VP9Common *cm;  struct macroblockd_plane planes[MAX_MB_PLANE];   int start;  int stop;  int y_only;} LFWorkerData; void vp9_loop_filter_data_reset(    LFWorkerData *lf_data, YV12_BUFFER_CONFIG *frame_buffer,    struct VP9Common *cm, const struct macroblockd_plane planes[MAX_MB_PLANE]); // Operates on the rows described by 'arg1' (cast to LFWorkerData *).int vp9_loop_filter_worker(void *arg1, void *unused);#ifdef __cplusplus}  // extern "C"#endif #endif  // VPX_VP9_COMMON_VP9_LOOPFILTER_H_