av1/encoder/rdopt.h - aom - Git at Google

 /*
  * 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_RDOPT_H_
 #define AOM_AV1_ENCODER_RDOPT_H_

 #include <stdbool.h>

 #include "av1/common/blockd.h"
 #include "av1/common/txb_common.h"

 #include "av1/encoder/block.h"
 #include "av1/encoder/context_tree.h"
 #include "av1/encoder/encoder.h"
 #include "av1/encoder/encodetxb.h"
 #include "av1/encoder/rdopt_utils.h"

 #ifdef __cplusplus
 extern "C" {
 #endif

 #define COMP_TYPE_RD_THRESH_SCALE 11
 #define COMP_TYPE_RD_THRESH_SHIFT 4
 #define MAX_WINNER_MOTION_MODES 10

 struct TileInfo;
 struct macroblock;
 struct RD_STATS;

 // Returns the number of colors in 'src'.
 int av1_count_colors(const uint8_t *src, int stride, int rows, int cols,
                      int *val_count);
 // Same as av1_count_colors(), but for high-bitdepth mode.
 int av1_count_colors_highbd(const uint8_t *src8, int stride, int rows, int cols,
                             int bit_depth, int *val_count);

 static INLINE int av1_cost_skip_txb(MACROBLOCK *x, const TXB_CTX *const txb_ctx,
                                     int plane, TX_SIZE tx_size) {
   const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size);
   const PLANE_TYPE plane_type = get_plane_type(plane);
   const LV_MAP_COEFF_COST *const coeff_costs =
       &x->coeff_costs[txs_ctx][plane_type];
   return coeff_costs->txb_skip_cost[txb_ctx->txb_skip_ctx][1];
 }

 void av1_rd_pick_intra_mode_sb(const struct AV1_COMP *cpi, struct macroblock *x,
                                struct RD_STATS *rd_cost, BLOCK_SIZE bsize,
                                PICK_MODE_CONTEXT *ctx, int64_t best_rd);

 unsigned int av1_get_sby_perpixel_variance(const struct AV1_COMP *cpi,
                                            const struct buf_2d *ref,
                                            BLOCK_SIZE bs);
 unsigned int av1_high_get_sby_perpixel_variance(const struct AV1_COMP *cpi,
                                                 const struct buf_2d *ref,
                                                 BLOCK_SIZE bs, int bd);

 void av1_rd_pick_inter_mode_sb(struct AV1_COMP *cpi,
                                struct TileDataEnc *tile_data,
                                struct macroblock *x, struct RD_STATS *rd_cost,
                                BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx,
                                int64_t best_rd_so_far);

 void av1_pick_intra_mode(AV1_COMP *cpi, MACROBLOCK *x, RD_STATS *rd_cost,
                          BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx);

 void av1_nonrd_pick_inter_mode_sb(struct AV1_COMP *cpi,
                                   struct TileDataEnc *tile_data,
                                   struct macroblock *x,
                                   struct RD_STATS *rd_cost, BLOCK_SIZE bsize,
                                   PICK_MODE_CONTEXT *ctx,
                                   int64_t best_rd_so_far);

 void av1_rd_pick_inter_mode_sb_seg_skip(
     const struct AV1_COMP *cpi, struct TileDataEnc *tile_data,
     struct macroblock *x, int mi_row, int mi_col, struct RD_STATS *rd_cost,
     BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx, int64_t best_rd_so_far);

 // The best edge strength seen in the block, as well as the best x and y
 // components of edge strength seen.
 typedef struct {
   uint16_t magnitude;
   uint16_t x;
   uint16_t y;
 } EdgeInfo;

 /** Returns an integer indicating the strength of the edge.
  * 0 means no edge found, 556 is the strength of a solid black/white edge,
  * and the number may range higher if the signal is even stronger (e.g., on a
  * corner). high_bd is a bool indicating the source should be treated
  * as a 16-bit array. bd is the bit depth.
  */
 EdgeInfo av1_edge_exists(const uint8_t *src, int src_stride, int w, int h,
                          bool high_bd, int bd);

 /** Applies a Gaussian blur with sigma = 1.3. Used by av1_edge_exists and
  * tests.
  */
 void av1_gaussian_blur(const uint8_t *src, int src_stride, int w, int h,
                        uint8_t *dst, bool high_bd, int bd);

 /* Applies standard 3x3 Sobel matrix. */
 typedef struct {
   int16_t x;
   int16_t y;
 } sobel_xy;

 sobel_xy av1_sobel(const uint8_t *input, int stride, int i, int j,
                    bool high_bd);

 void av1_inter_mode_data_init(struct TileDataEnc *tile_data);
 void av1_inter_mode_data_fit(TileDataEnc *tile_data, int rdmult);

 static INLINE int av1_encoder_get_relative_dist(const OrderHintInfo *oh, int a,
                                                 int b) {
   if (!oh->enable_order_hint) return 0;

   assert(a >= 0 && b >= 0);
   return (a - b);
 }

 // This function will return number of mi's in a superblock.
 static INLINE int av1_get_sb_mi_size(const AV1_COMMON *const cm) {
   const int mi_alloc_size_1d = mi_size_wide[cm->mi_alloc_bsize];
   int sb_mi_rows =
       (mi_size_wide[cm->seq_params.sb_size] + mi_alloc_size_1d - 1) /
       mi_alloc_size_1d;
   assert(mi_size_wide[cm->seq_params.sb_size] ==
          mi_size_high[cm->seq_params.sb_size]);
   int sb_mi_size = sb_mi_rows * sb_mi_rows;

   return sb_mi_size;
 }

 // This function will copy usable ref_mv_stack[ref_frame][4] and
 // weight[ref_frame][4] information from ref_mv_stack[ref_frame][8] and
 // weight[ref_frame][8].
 static INLINE void av1_copy_usable_ref_mv_stack_and_weight(
     const MACROBLOCKD *xd, MB_MODE_INFO_EXT *const mbmi_ext,
     MV_REFERENCE_FRAME ref_frame) {
   memcpy(mbmi_ext->weight[ref_frame], xd->weight[ref_frame],
          USABLE_REF_MV_STACK_SIZE * sizeof(xd->weight[0][0]));
   memcpy(mbmi_ext->ref_mv_stack[ref_frame], xd->ref_mv_stack[ref_frame],
          USABLE_REF_MV_STACK_SIZE * sizeof(xd->ref_mv_stack[0][0]));
 }

 // This function prunes the mode if either of the reference frame falls in the
 // pruning list
 static INLINE int prune_ref(const MV_REFERENCE_FRAME *const ref_frame,
                             const OrderHintInfo *const order_hint_info,
                             const unsigned int *const ref_display_order_hint,
                             const unsigned int frame_display_order_hint,
                             const int *ref_frame_list) {
   for (int i = 0; i < 2; i++) {
     if (ref_frame[0] == ref_frame_list[i] ||
         ref_frame[1] == ref_frame_list[i]) {
       if (av1_encoder_get_relative_dist(
               order_hint_info,
               ref_display_order_hint[ref_frame_list[i] - LAST_FRAME],
               frame_display_order_hint) < 0)
         return 1;
     }
   }
   return 0;
 }

 static INLINE int prune_ref_by_selective_ref_frame(
     const AV1_COMP *const cpi, const MV_REFERENCE_FRAME *const ref_frame,
     const unsigned int *const ref_display_order_hint,
     const unsigned int cur_frame_display_order_hint) {
   const SPEED_FEATURES *const sf = &cpi->sf;
   if (sf->inter_sf.selective_ref_frame) {
     const AV1_COMMON *const cm = &cpi->common;
     const OrderHintInfo *const order_hint_info =
         &cm->seq_params.order_hint_info;
     const int comp_pred = ref_frame[1] > INTRA_FRAME;
     if (sf->inter_sf.selective_ref_frame >= 2 ||
         (sf->inter_sf.selective_ref_frame == 1 && comp_pred)) {
       const int ref_frame_list[2] = { LAST3_FRAME, LAST2_FRAME };
       if (prune_ref(ref_frame, order_hint_info, ref_display_order_hint,
                     ref_display_order_hint[GOLDEN_FRAME - LAST_FRAME],
                     ref_frame_list))
         return 1;
     }

     // One-sided compound is used only when all reference frames are one-sided.
     if (sf->inter_sf.selective_ref_frame >= 2 && comp_pred &&
         !cpi->all_one_sided_refs) {
       unsigned int ref_offsets[2];
       int ref_dist[2];
       for (int i = 0; i < 2; ++i) {
         const RefCntBuffer *const buf = get_ref_frame_buf(cm, ref_frame[i]);
         assert(buf != NULL);
         ref_offsets[i] = buf->display_order_hint;
         ref_dist[i] = av1_encoder_get_relative_dist(
             order_hint_info, ref_offsets[i], cur_frame_display_order_hint);
       }

       // If both references are in same direction
       if ((ref_dist[0] > 0) == (ref_dist[1] > 0)) {
         return 1;
       }
     }

     if (sf->inter_sf.selective_ref_frame >= 3) {
       static const int ref_frame_list[2] = { ALTREF2_FRAME, BWDREF_FRAME };
       if (prune_ref(ref_frame, order_hint_info, ref_display_order_hint,
                     cur_frame_display_order_hint, ref_frame_list))
         return 1;
     }

     if (sf->inter_sf.selective_ref_frame >= 4 && comp_pred) {
       // Check if one of the reference is ALTREF2_FRAME and BWDREF_FRAME is a
       // valid reference.
       if ((ref_frame[0] == ALTREF2_FRAME || ref_frame[1] == ALTREF2_FRAME) &&
           (cpi->ref_frame_flags & av1_ref_frame_flag_list[BWDREF_FRAME])) {
         // Check if both ALTREF2_FRAME and BWDREF_FRAME are future references.
         const int arf2_dist = av1_encoder_get_relative_dist(
             order_hint_info, ref_display_order_hint[ALTREF2_FRAME - LAST_FRAME],
             cur_frame_display_order_hint);
         const int bwd_dist = av1_encoder_get_relative_dist(
             order_hint_info, ref_display_order_hint[BWDREF_FRAME - LAST_FRAME],
             cur_frame_display_order_hint);
         if (arf2_dist > 0 && bwd_dist > 0 && bwd_dist <= arf2_dist) {
           // Drop ALTREF2_FRAME as a reference if BWDREF_FRAME is a closer
           // reference to the current frame than ALTREF2_FRAME
           assert(get_ref_frame_buf(cm, ALTREF2_FRAME) != NULL);
           assert(get_ref_frame_buf(cm, BWDREF_FRAME) != NULL);
           return 1;
         }
       }
     }
   }
   return 0;
 }
 #ifdef __cplusplus
 }  // extern "C"
 #endif

 #endif  // AOM_AV1_ENCODER_RDOPT_H_
	/*
	* 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_RDOPT_H_
	#define AOM_AV1_ENCODER_RDOPT_H_

	#include <stdbool.h>

	#include "av1/common/blockd.h"
	#include "av1/common/txb_common.h"

	#include "av1/encoder/block.h"
	#include "av1/encoder/context_tree.h"
	#include "av1/encoder/encoder.h"
	#include "av1/encoder/encodetxb.h"
	#include "av1/encoder/rdopt_utils.h"

	#ifdef __cplusplus
	extern "C" {
	#endif

	#define COMP_TYPE_RD_THRESH_SCALE 11
	#define COMP_TYPE_RD_THRESH_SHIFT 4
	#define MAX_WINNER_MOTION_MODES 10

	struct TileInfo;
	struct macroblock;
	struct RD_STATS;

	// Returns the number of colors in 'src'.
	int av1_count_colors(const uint8_t *src, int stride, int rows, int cols,
	int *val_count);
	// Same as av1_count_colors(), but for high-bitdepth mode.
	int av1_count_colors_highbd(const uint8_t *src8, int stride, int rows, int cols,
	int bit_depth, int *val_count);

	static INLINE int av1_cost_skip_txb(MACROBLOCK x, const TXB_CTX const txb_ctx,
	int plane, TX_SIZE tx_size) {
	const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size);
	const PLANE_TYPE plane_type = get_plane_type(plane);
	const LV_MAP_COEFF_COST *const coeff_costs =
	&x->coeff_costs[txs_ctx][plane_type];
	return coeff_costs->txb_skip_cost[txb_ctx->txb_skip_ctx][1];
	}

	void av1_rd_pick_intra_mode_sb(const struct AV1_COMP cpi, struct macroblock x,
	struct RD_STATS *rd_cost, BLOCK_SIZE bsize,
	PICK_MODE_CONTEXT *ctx, int64_t best_rd);

	unsigned int av1_get_sby_perpixel_variance(const struct AV1_COMP *cpi,
	const struct buf_2d *ref,
	BLOCK_SIZE bs);
	unsigned int av1_high_get_sby_perpixel_variance(const struct AV1_COMP *cpi,
	const struct buf_2d *ref,
	BLOCK_SIZE bs, int bd);

	void av1_rd_pick_inter_mode_sb(struct AV1_COMP *cpi,
	struct TileDataEnc *tile_data,
	struct macroblock x, struct RD_STATS rd_cost,
	BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx,
	int64_t best_rd_so_far);

	void av1_pick_intra_mode(AV1_COMP cpi, MACROBLOCK x, RD_STATS *rd_cost,
	BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx);

	void av1_nonrd_pick_inter_mode_sb(struct AV1_COMP *cpi,
	struct TileDataEnc *tile_data,
	struct macroblock *x,
	struct RD_STATS *rd_cost, BLOCK_SIZE bsize,
	PICK_MODE_CONTEXT *ctx,
	int64_t best_rd_so_far);

	void av1_rd_pick_inter_mode_sb_seg_skip(
	const struct AV1_COMP cpi, struct TileDataEnc tile_data,
	struct macroblock x, int mi_row, int mi_col, struct RD_STATS rd_cost,
	BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx, int64_t best_rd_so_far);

	// The best edge strength seen in the block, as well as the best x and y
	// components of edge strength seen.
	typedef struct {
	uint16_t magnitude;
	uint16_t x;
	uint16_t y;
	} EdgeInfo;

	/** Returns an integer indicating the strength of the edge.
	* 0 means no edge found, 556 is the strength of a solid black/white edge,
	* and the number may range higher if the signal is even stronger (e.g., on a
	* corner). high_bd is a bool indicating the source should be treated
	* as a 16-bit array. bd is the bit depth.
	*/
	EdgeInfo av1_edge_exists(const uint8_t *src, int src_stride, int w, int h,
	bool high_bd, int bd);

	/** Applies a Gaussian blur with sigma = 1.3. Used by av1_edge_exists and
	* tests.
	*/
	void av1_gaussian_blur(const uint8_t *src, int src_stride, int w, int h,
	uint8_t *dst, bool high_bd, int bd);

	/* Applies standard 3x3 Sobel matrix. */
	typedef struct {
	int16_t x;
	int16_t y;
	} sobel_xy;

	sobel_xy av1_sobel(const uint8_t *input, int stride, int i, int j,
	bool high_bd);

	void av1_inter_mode_data_init(struct TileDataEnc *tile_data);
	void av1_inter_mode_data_fit(TileDataEnc *tile_data, int rdmult);

	static INLINE int av1_encoder_get_relative_dist(const OrderHintInfo *oh, int a,
	int b) {
	if (!oh->enable_order_hint) return 0;

	assert(a >= 0 && b >= 0);
	return (a - b);
	}

	// This function will return number of mi's in a superblock.
	static INLINE int av1_get_sb_mi_size(const AV1_COMMON *const cm) {
	const int mi_alloc_size_1d = mi_size_wide[cm->mi_alloc_bsize];
	int sb_mi_rows =
	(mi_size_wide[cm->seq_params.sb_size] + mi_alloc_size_1d - 1) /
	mi_alloc_size_1d;
	assert(mi_size_wide[cm->seq_params.sb_size] ==
	mi_size_high[cm->seq_params.sb_size]);
	int sb_mi_size = sb_mi_rows * sb_mi_rows;

	return sb_mi_size;
	}

	// This function will copy usable ref_mv_stack[ref_frame][4] and
	// weight[ref_frame][4] information from ref_mv_stack[ref_frame][8] and
	// weight[ref_frame][8].
	static INLINE void av1_copy_usable_ref_mv_stack_and_weight(
	const MACROBLOCKD xd, MB_MODE_INFO_EXT const mbmi_ext,
	MV_REFERENCE_FRAME ref_frame) {
	memcpy(mbmi_ext->weight[ref_frame], xd->weight[ref_frame],
	USABLE_REF_MV_STACK_SIZE * sizeof(xd->weight[0][0]));
	memcpy(mbmi_ext->ref_mv_stack[ref_frame], xd->ref_mv_stack[ref_frame],
	USABLE_REF_MV_STACK_SIZE * sizeof(xd->ref_mv_stack[0][0]));
	}

	// This function prunes the mode if either of the reference frame falls in the
	// pruning list
	static INLINE int prune_ref(const MV_REFERENCE_FRAME *const ref_frame,
	const OrderHintInfo *const order_hint_info,
	const unsigned int *const ref_display_order_hint,
	const unsigned int frame_display_order_hint,
	const int *ref_frame_list) {
	for (int i = 0; i < 2; i++) {
	if (ref_frame[0] == ref_frame_list[i] \|\|
	ref_frame[1] == ref_frame_list[i]) {
	if (av1_encoder_get_relative_dist(
	order_hint_info,
	ref_display_order_hint[ref_frame_list[i] - LAST_FRAME],
	frame_display_order_hint) < 0)
	return 1;
	}
	}
	return 0;
	}

	static INLINE int prune_ref_by_selective_ref_frame(
	const AV1_COMP const cpi, const MV_REFERENCE_FRAME const ref_frame,
	const unsigned int *const ref_display_order_hint,
	const unsigned int cur_frame_display_order_hint) {
	const SPEED_FEATURES *const sf = &cpi->sf;
	if (sf->inter_sf.selective_ref_frame) {
	const AV1_COMMON *const cm = &cpi->common;
	const OrderHintInfo *const order_hint_info =
	&cm->seq_params.order_hint_info;
	const int comp_pred = ref_frame[1] > INTRA_FRAME;
	if (sf->inter_sf.selective_ref_frame >= 2 \|\|
	(sf->inter_sf.selective_ref_frame == 1 && comp_pred)) {
	const int ref_frame_list[2] = { LAST3_FRAME, LAST2_FRAME };
	if (prune_ref(ref_frame, order_hint_info, ref_display_order_hint,
	ref_display_order_hint[GOLDEN_FRAME - LAST_FRAME],
	ref_frame_list))
	return 1;
	}

	// One-sided compound is used only when all reference frames are one-sided.
	if (sf->inter_sf.selective_ref_frame >= 2 && comp_pred &&
	!cpi->all_one_sided_refs) {
	unsigned int ref_offsets[2];
	int ref_dist[2];
	for (int i = 0; i < 2; ++i) {
	const RefCntBuffer *const buf = get_ref_frame_buf(cm, ref_frame[i]);
	assert(buf != NULL);
	ref_offsets[i] = buf->display_order_hint;
	ref_dist[i] = av1_encoder_get_relative_dist(
	order_hint_info, ref_offsets[i], cur_frame_display_order_hint);
	}

	// If both references are in same direction
	if ((ref_dist[0] > 0) == (ref_dist[1] > 0)) {
	return 1;
	}
	}

	if (sf->inter_sf.selective_ref_frame >= 3) {
	static const int ref_frame_list[2] = { ALTREF2_FRAME, BWDREF_FRAME };
	if (prune_ref(ref_frame, order_hint_info, ref_display_order_hint,
	cur_frame_display_order_hint, ref_frame_list))
	return 1;
	}

	if (sf->inter_sf.selective_ref_frame >= 4 && comp_pred) {
	// Check if one of the reference is ALTREF2_FRAME and BWDREF_FRAME is a
	// valid reference.
	if ((ref_frame[0] == ALTREF2_FRAME \|\| ref_frame[1] == ALTREF2_FRAME) &&
	(cpi->ref_frame_flags & av1_ref_frame_flag_list[BWDREF_FRAME])) {
	// Check if both ALTREF2_FRAME and BWDREF_FRAME are future references.
	const int arf2_dist = av1_encoder_get_relative_dist(
	order_hint_info, ref_display_order_hint[ALTREF2_FRAME - LAST_FRAME],
	cur_frame_display_order_hint);
	const int bwd_dist = av1_encoder_get_relative_dist(
	order_hint_info, ref_display_order_hint[BWDREF_FRAME - LAST_FRAME],
	cur_frame_display_order_hint);
	if (arf2_dist > 0 && bwd_dist > 0 && bwd_dist <= arf2_dist) {
	// Drop ALTREF2_FRAME as a reference if BWDREF_FRAME is a closer
	// reference to the current frame than ALTREF2_FRAME
	assert(get_ref_frame_buf(cm, ALTREF2_FRAME) != NULL);
	assert(get_ref_frame_buf(cm, BWDREF_FRAME) != NULL);
	return 1;
	}
	}
	}
	}
	return 0;
	}
	#ifdef __cplusplus
	} // extern "C"
	#endif

	#endif // AOM_AV1_ENCODER_RDOPT_H_