// Filter stripe grid offset upwards compared to the superblock grid #define RESTORATION_UNIT_OFFSET 8
#define SGRPROJ_BORDER_VERT 3// Vertical border used for Sgr #define SGRPROJ_BORDER_HORZ 3// Horizontal border used for Sgr
#define WIENER_BORDER_VERT 2// Vertical border used for Wiener #define WIENER_HALFWIN 3 #define WIENER_BORDER_HORZ (WIENER_HALFWIN) // Horizontal border for Wiener
// RESTORATION_BORDER_VERT determines line buffer requirement for LR. // Should be set at the max of SGRPROJ_BORDER_VERT and WIENER_BORDER_VERT. // Note the line buffer needed is twice the value of this macro. #if SGRPROJ_BORDER_VERT >= WIENER_BORDER_VERT #define RESTORATION_BORDER_VERT (SGRPROJ_BORDER_VERT) #else #define RESTORATION_BORDER_VERT (WIENER_BORDER_VERT) #endif// SGRPROJ_BORDER_VERT >= WIENER_BORDER_VERT
// How many border pixels do we need for each processing unit? #define RESTORATION_BORDER 3
// How many rows of deblocked pixels do we save above/below each processing // stripe? #define RESTORATION_CTX_VERT 2
// Additional pixels to the left and right in above/below buffers // It is RESTORATION_BORDER_HORZ rounded up to get nicer buffer alignment #define RESTORATION_EXTRA_HORZ 4
// Pad up to 20 more (may be much less is needed) #define RESTORATION_PADDING 20 #define RESTORATION_PROC_UNIT_PELS \
((RESTORATION_PROC_UNIT_SIZE + RESTORATION_BORDER_HORZ * 2 + \
RESTORATION_PADDING) * \
(RESTORATION_PROC_UNIT_SIZE + RESTORATION_BORDER_VERT * 2 + \
RESTORATION_PADDING))
// Two 32-bit buffers needed for the restored versions from two filters // TODO(debargha, rupert): Refactor to not need the large tile size to be // stored on the decoder side. #define SGRPROJ_TMPBUF_SIZE (RESTORATION_UNITPELS_MAX * 2 * sizeof(int32_t))
// If WIENER_WIN_CHROMA == WIENER_WIN - 2, that implies 5x5 filters are used for // chroma. To use 7x7 for chroma set WIENER_WIN_CHROMA to WIENER_WIN. #define WIENER_WIN_CHROMA (WIENER_WIN - 2) #define WIENER_WIN_REDUCED (WIENER_WIN - 2) #define WIENER_WIN2_CHROMA ((WIENER_WIN_CHROMA) * (WIENER_WIN_CHROMA)) #define WIENER_STATS_DOWNSAMPLE_FACTOR 4
// Max of SGRPROJ_TMPBUF_SIZE, DOMAINTXFMRF_TMPBUF_SIZE, WIENER_TMPBUF_SIZE #define RESTORATION_TMPBUF_SIZE (SGRPROJ_TMPBUF_SIZE)
// Max of SGRPROJ_EXTBUF_SIZE, WIENER_EXTBUF_SIZE #define RESTORATION_EXTBUF_SIZE (WIENER_EXTBUF_SIZE)
// Check the assumptions of the existing code #if SUBPEL_TAPS != WIENER_WIN + 1 #error"Wiener filter currently only works if SUBPEL_TAPS == WIENER_WIN + 1" #endif #if WIENER_FILT_PREC_BITS != 7 #error"Wiener filter currently only works if WIENER_FILT_PREC_BITS == 7" #endif
typedefstruct {
int r[2]; // radii
int s[2]; // sgr parameters for r[0] and r[1], based on GenSgrprojVtable()
} sgr_params_type; /*!\endcond */
/*!\brief Parameters related to Restoration Unit Info */ typedefstruct { /*! *restorationtype
*/
RestorationType restoration_type;
// A restoration line buffer needs space for two lines plus a horizontal filter // margin of RESTORATION_EXTRA_HORZ on each side. #define RESTORATION_LINEBUFFER_WIDTH \
(RESTORATION_UNITSIZE_MAX * 3 / 2 + 2 * RESTORATION_EXTRA_HORZ)
void av1_extend_frame(uint8_t *data, int width, int height, int stride,
int border_horz, int border_vert, int highbd); void av1_decode_xq(const int *xqd, int *xq, const sgr_params_type *params);
/*!\endcond */
/*!\brief Function for applying loop restoration filter to a single unit. * *\ingroupin_loop_restoration *Thisfunctionappliesthelooprestorationfiltertoasingle *looprestorationunit. * *\param[in]limitsLimitsoftheunit *\param[in]ruiTheparameterstouseforthisunitandits *coefficients *\param[in]rsbDeblockedpixelstouseforstripeboundaries *\param[in]rlbsSpacetouseasascratchbuffer *\param[in]ss_xHorizontalsubsamplingforplane *\param[in]ss_yVerticalsubsamplingforplane *\param[in]plane_wWidthofthecurrentplane *\param[in]plane_hHeightofthecurrentplane *\param[in]highbdWhetherhighbitdepthpipelineisused *\param[in]bit_depthBit-depthofthevideo *\param[in]data8Framedata(pointingatthetop-leftcornerof *theframe,nottherestorationunit). *\param[in]strideStrideof\cdata8 *\param[out]dst8Bufferwheretheresultswillbewritten.Like *\cdata8,\cdst8shouldpointatthetop-left *corneroftheframe *\param[in]dst_strideStrideof\cdst8 *\param[in]tmpbufScratchbufferusedbythesgrprojfilter *whichshouldbeatleastSGRPROJ_TMPBUF_SIZE *big. *\param[in]optimized_lrWhethertousefastoptimizedLoopRestoration *\param[in,out]error_infoErrorinfoforreportingerrors * *\remarkNothingisreturned.Instead,thefilteredunitisoutputin *\cdst8attheproperrestorationunitoffset.
*/ void av1_loop_restoration_filter_unit( const RestorationTileLimits *limits, const RestorationUnitInfo *rui, const RestorationStripeBoundaries *rsb, RestorationLineBuffers *rlbs,
int plane_w, int plane_h, int ss_x, int ss_y, int highbd, int bit_depth,
uint8_t *data8, int stride, uint8_t *dst8, int dst_stride, int32_t *tmpbuf,
int optimized_lr, struct aom_internal_error_info *error_info);
/*!\brief Function for applying loop restoration filter to a frame * *\ingroupin_loop_restoration *Thisfunctionappliesthelooprestorationfiltertoaframe. * *\param[in,out]frameCompressedframebuffer *\param[in,out]cmPointertotoplevelcommonstructure *\param[in]optimized_lrWhethertousefastoptimizedLoopRestoration *\param[in]lr_ctxtLooprestorationcontext * *\remarkNothingisreturned.Instead,thefilteredframeisoutputin *\cframe.
*/ void av1_loop_restoration_filter_frame(YV12_BUFFER_CONFIG *frame, struct AV1Common *cm, int optimized_lr, void *lr_ctxt); /*!\cond */
void av1_loop_restoration_precal(void);
struct AV1LrSyncData;
typedefvoid (*sync_read_fn_t)(void *const lr_sync, int r, int c, int plane);
typedefvoid (*sync_write_fn_t)(void *const lr_sync, int r, int c, const int sb_cols, int plane);
// Return 1 iff the block at mi_row, mi_col with size bsize is a // top-level superblock containing the top-left corner of at least one // loop restoration unit. // // If the block is a top-level superblock, the function writes to // *rcol0, *rcol1, *rrow0, *rrow1. This means that the parameters for all // restoration units in the rectangle [*rcol0, *rcol1) x [*rrow0, *rrow1) // are signaled in this superblock.
int av1_loop_restoration_corners_in_sb(conststruct AV1Common *cm, int plane,
int mi_row, int mi_col, BLOCK_SIZE bsize,
int *rcol0, int *rcol1, int *rrow0,
int *rrow1);
void av1_loop_restoration_save_boundary_lines(const YV12_BUFFER_CONFIG *frame, struct AV1Common *cm,
int after_cdef); void av1_loop_restoration_filter_frame_init(AV1LrStruct *lr_ctxt,
YV12_BUFFER_CONFIG *frame, struct AV1Common *cm,
int optimized_lr, int num_planes); void av1_foreach_rest_unit_in_row(
RestorationTileLimits *limits, int plane_w,
rest_unit_visitor_t on_rest_unit, int row_number, int unit_size,
int hnum_rest_units, int vnum_rest_units, int plane, void *priv,
int32_t *tmpbuf, RestorationLineBuffers *rlbs, sync_read_fn_t on_sync_read,
sync_write_fn_t on_sync_write, struct AV1LrSyncData *const lr_sync, struct aom_internal_error_info *error_info);
void av1_get_upsampled_plane_size(conststruct AV1Common *cm, int is_uv,
int *plane_w, int *plane_h);
int av1_lr_count_units(int unit_size, int plane_size); void av1_lr_sync_read_dummy(void *const lr_sync, int r, int c, int plane); void av1_lr_sync_write_dummy(void *const lr_sync, int r, int c, const int sb_cols, int plane);
/*!\endcond */
#ifdef __cplusplus
} // extern "C" #endif
#endif// AOM_AV1_COMMON_RESTORATION_H_
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