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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AV1_ENCODER_PICKCDEF_H_
#define AOM_AV1_ENCODER_PICKCDEF_H_
#include "av1/common/cdef.h"
#include "av1/encoder/speed_features.h"
#ifdef __cplusplus
extern "C" {
#endif
/*!\cond */
struct MultiThreadInfo;
#define REDUCED_PRI_STRENGTHS_LVL1 8
#define REDUCED_PRI_STRENGTHS_LVL2 5
#define REDUCED_SEC_STRENGTHS_LVL3 2
#define REDUCED_PRI_STRENGTHS_LVL4 2
#define REDUCED_TOTAL_STRENGTHS_LVL1 \
(REDUCED_PRI_STRENGTHS_LVL1 * CDEF_SEC_STRENGTHS)
#define REDUCED_TOTAL_STRENGTHS_LVL2 \
(REDUCED_PRI_STRENGTHS_LVL2 * CDEF_SEC_STRENGTHS)
#define REDUCED_TOTAL_STRENGTHS_LVL3 \
(REDUCED_PRI_STRENGTHS_LVL2 * REDUCED_SEC_STRENGTHS_LVL3)
#define REDUCED_TOTAL_STRENGTHS_LVL4 \
(REDUCED_PRI_STRENGTHS_LVL4 * REDUCED_SEC_STRENGTHS_LVL3)
#define TOTAL_STRENGTHS (CDEF_PRI_STRENGTHS * CDEF_SEC_STRENGTHS)
static const int priconv_lvl1[REDUCED_PRI_STRENGTHS_LVL1] = { 0, 1, 2, 3,
5, 7, 10, 13 };
static const int priconv_lvl2[REDUCED_PRI_STRENGTHS_LVL2] = { 0, 2, 4, 8, 14 };
static const int priconv_lvl4[REDUCED_PRI_STRENGTHS_LVL4] = { 0, 11 };
static const int secconv_lvl3[REDUCED_SEC_STRENGTHS_LVL3] = { 0, 2 };
static const int nb_cdef_strengths[CDEF_PICK_METHODS] = {
TOTAL_STRENGTHS,
REDUCED_TOTAL_STRENGTHS_LVL1,
REDUCED_TOTAL_STRENGTHS_LVL2,
REDUCED_TOTAL_STRENGTHS_LVL3,
REDUCED_TOTAL_STRENGTHS_LVL4,
TOTAL_STRENGTHS
};
typedef void (*copy_fn_t)(uint16_t *dst, int dstride, const void *src,
int src_voffset, int src_hoffset, int sstride,
int vsize, int hsize);
typedef uint64_t (*compute_cdef_dist_t)(void *dst, int dstride, uint16_t *src,
cdef_list *dlist, int cdef_count,
BLOCK_SIZE bsize, int coeff_shift,
int row, int col);
/*! \brief CDEF search context.
*/
typedef struct {
/*!
* Pointer to the frame buffer holding the source frame
*/
const YV12_BUFFER_CONFIG *ref;
/*!
* Pointer to params related to MB_MODE_INFO arrays and related info
*/
CommonModeInfoParams *mi_params;
/*!
* Info specific to each plane
*/
struct macroblockd_plane plane[MAX_MB_PLANE];
/*!
* Function pointer of copy_fn
*/
copy_fn_t copy_fn;
/*!
* Function pointer of compute_cdef_dist_fn
*/
compute_cdef_dist_t compute_cdef_dist_fn;
/*!
* Number of strenghts evaluated in CDEF filter search
*/
int total_strengths;
/*!
* Bit-depth dependent shift
*/
int coeff_shift;
/*!
* CDEF damping factor
*/
int damping;
/*!
* Search method used to select CDEF parameters
*/
int pick_method;
/*!
* Number of planes
*/
int num_planes;
/*!
* Log2 of width of the MI unit in pixels. mi_wide_l2[i]
* indicates the width of the MI unit in pixels for the ith plane
*/
int mi_wide_l2[MAX_MB_PLANE];
/*!
* Log2 of height of the MI unit in pixels. mi_high_l2[i]
* indicates the height of the MI unit in pixels for the ith plane
*/
int mi_high_l2[MAX_MB_PLANE];
/*!
* Subsampling in x direction. xdec[i] indicates the subsampling
* for the ith plane
*/
int xdec[MAX_MB_PLANE];
/*!
* Subsampling in y direction. ydec[i] indicates the subsampling
* for the ith plane
*/
int ydec[MAX_MB_PLANE];
/*!
* bsize[i] indicates the block size of ith plane
*/
int bsize[MAX_MB_PLANE];
/*!
* Number of 64x64 blocks in vertical direction of a frame
*/
int nvfb;
/*!
* Number of 64x64 blocks in horizontal direction of a frame
*/
int nhfb;
/*!
* Pointer to the mean squared error between the CDEF filtered block and the
* source block. mse[i][j][k] stores the MSE of the ith plane (i=0 corresponds
* to Y-plane, i=1 corresponds to U and V planes), jth block and kth strength
* index
*/
uint64_t (*mse[2])[TOTAL_STRENGTHS];
/*!
* Holds the position (in units of mi's) of the cdef filtered
* block in raster scan order
*/
int *sb_index;
/*!
* Holds the count of cdef filtered blocks
*/
int sb_count;
} CdefSearchCtx;
static INLINE int sb_all_skip(const CommonModeInfoParams *const mi_params,
int mi_row, int mi_col) {
const int maxr = AOMMIN(mi_params->mi_rows - mi_row, MI_SIZE_64X64);
const int maxc = AOMMIN(mi_params->mi_cols - mi_col, MI_SIZE_64X64);
const int stride = mi_params->mi_stride;
MB_MODE_INFO **mbmi = mi_params->mi_grid_base + mi_row * stride + mi_col;
for (int r = 0; r < maxr; ++r, mbmi += stride) {
for (int c = 0; c < maxc; ++c) {
if (!mbmi[c]->skip_txfm) return 0;
}
}
return 1;
}
// Checks if cdef processing can be skipped for particular sb.
// Inputs:
// cdef_search_ctx: Pointer to the structure containing parameters related to
// CDEF search context.
// fbr: Row index in units of 64x64 block
// fbc: Column index in units of 64x64 block
// Returns:
// 1/0 will be returned to indicate skip/don't skip cdef processing of sb
// respectively.
static INLINE int cdef_sb_skip(const CommonModeInfoParams *const mi_params,
int fbr, int fbc) {
const MB_MODE_INFO *const mbmi =
mi_params->mi_grid_base[MI_SIZE_64X64 * fbr * mi_params->mi_stride +
MI_SIZE_64X64 * fbc];
// No filtering if the entire filter block is skipped.
if (sb_all_skip(mi_params, fbr * MI_SIZE_64X64, fbc * MI_SIZE_64X64))
return 1;
// Skip odd numbered 64x64 block rows(cols) when bsize is BLOCK_128X128,
// BLOCK_64X128(BLOCK_128X128, BLOCK_128X64) as for such blocks CDEF filtering
// is done at the corresponding block sizes.
if (((fbc & 1) &&
(mbmi->bsize == BLOCK_128X128 || mbmi->bsize == BLOCK_128X64)) ||
((fbr & 1) &&
(mbmi->bsize == BLOCK_128X128 || mbmi->bsize == BLOCK_64X128)))
return 1;
return 0;
}
void av1_cdef_mse_calc_block(CdefSearchCtx *cdef_search_ctx, int fbr, int fbc,
int sb_count);
/*!\endcond */
/*!\brief AV1 CDEF parameter search
*
* \ingroup in_loop_cdef
*
* Searches for optimal CDEF parameters for frame
*
* \param[in] mt_info Pointer to multi-threading parameters
* \param[in] frame Compressed frame buffer
* \param[in] ref Source frame buffer
* \param[in,out] cm Pointer to top level common structure
* \param[in] xd Pointer to common current coding block structure
* \param[in] pick_method The method used to select params
* \param[in] rdmult rd multiplier to use in making param choices
* \param[in] skip_cdef_feature Speed feature to skip cdef
* \param[in] frames_since_key Number of frames since key frame
*
* \return Nothing is returned. Instead, optimal CDEF parameters are stored
* in the \c cdef_info structure of type \ref CdefInfo inside \c cm:
* \arg \c cdef_bits: Bits of strength parameters
* \arg \c nb_cdef_strengths: Number of strength parameters
* \arg \c cdef_strengths: list of \c nb_cdef_strengths strength parameters
* for the luma plane.
* \arg \c uv_cdef_strengths: list of \c nb_cdef_strengths strength parameters
* for the chroma planes.
* \arg \c damping_factor: CDEF damping factor.
*
*/
void av1_cdef_search(struct MultiThreadInfo *mt_info,
const YV12_BUFFER_CONFIG *frame,
const YV12_BUFFER_CONFIG *ref, AV1_COMMON *cm,
MACROBLOCKD *xd, CDEF_PICK_METHOD pick_method, int rdmult,
int skip_cdef_feature, int frames_since_key);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_ENCODER_PICKCDEF_H_
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