| AOMedia AV1 Codec

rdopt.h
1/*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved.
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12#ifndef AOM_AV1_ENCODER_RDOPT_H_
13#define AOM_AV1_ENCODER_RDOPT_H_
14
15#include <stdbool.h>
16
17#include "av1/common/blockd.h"
18#include "av1/common/txb_common.h"
19
20#include "av1/encoder/block.h"
21#include "av1/encoder/context_tree.h"
22#include "av1/encoder/encoder.h"
23#include "av1/encoder/encodetxb.h"
24#include "av1/encoder/rdopt_utils.h"
25
26#ifdef __cplusplus
27 extern "C" {
28#endif
29
30#define COMP_TYPE_RD_THRESH_SCALE 11
31#define COMP_TYPE_RD_THRESH_SHIFT 4
32#define MAX_WINNER_MOTION_MODES 10
33
34 struct TileInfo;
35 struct macroblock;
36 struct RD_STATS;
37
62 void av1_rd_pick_intra_mode_sb(const struct AV1_COMP *cpi, struct macroblock *x,
63 struct RD_STATS *rd_cost, BLOCK_SIZE bsize,
64 PICK_MODE_CONTEXT *ctx, int64_t best_rd);
65
93 void av1_rd_pick_inter_mode(struct AV1_COMP *cpi, struct TileDataEnc *tile_data,
94 struct macroblock *x, struct RD_STATS *rd_cost,
95 BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx,
96 int64_t best_rd_so_far);
97
123 void av1_nonrd_pick_intra_mode(AV1_COMP *cpi, MACROBLOCK *x, RD_STATS *rd_cost,
124 BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx);
125
155 void av1_nonrd_pick_inter_mode_sb(struct AV1_COMP *cpi,
156 struct TileDataEnc *tile_data,
157 struct macroblock *x,
158 struct RD_STATS *rd_cost, BLOCK_SIZE bsize,
159 PICK_MODE_CONTEXT *ctx);
160
161 void av1_rd_pick_inter_mode_sb_seg_skip(
162 const struct AV1_COMP *cpi, struct TileDataEnc *tile_data,
163 struct macroblock *x, int mi_row, int mi_col, struct RD_STATS *rd_cost,
164 BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx, int64_t best_rd_so_far);
165
166 void av1_inter_mode_data_init(struct TileDataEnc *tile_data);
167 void av1_inter_mode_data_fit(TileDataEnc *tile_data, int rdmult);
168
169 static inline int coded_to_superres_mi(int mi_col, int denom) {
170 return (mi_col * denom + SCALE_NUMERATOR / 2) / SCALE_NUMERATOR;
171}
172
173 static inline int av1_encoder_get_relative_dist(int a, int b) {
174 assert(a >= 0 && b >= 0);
175 return (a - b);
176}
177
178// This function will return number of mi's in a superblock.
179 static inline int av1_get_sb_mi_size(const AV1_COMMON *const cm) {
180 const int mi_alloc_size_1d = mi_size_wide[cm->mi_params.mi_alloc_bsize];
181 int sb_mi_rows =
182 (mi_size_wide[cm->seq_params->sb_size] + mi_alloc_size_1d - 1) /
183 mi_alloc_size_1d;
184 assert(mi_size_wide[cm->seq_params->sb_size] ==
185 mi_size_high[cm->seq_params->sb_size]);
186 int sb_mi_size = sb_mi_rows * sb_mi_rows;
187
188 return sb_mi_size;
189}
190
191// This function prunes the mode if either of the reference frame falls in the
192// pruning list
193 static inline int prune_ref(const MV_REFERENCE_FRAME *const ref_frame,
194 const unsigned int *const ref_display_order_hint,
195 const unsigned int frame_display_order_hint,
196 const int *ref_frame_list) {
197 for (int i = 0; i < 2; i++) {
198 if (ref_frame_list[i] == NONE_FRAME) continue;
199
200 if (ref_frame[0] == ref_frame_list[i] ||
201 ref_frame[1] == ref_frame_list[i]) {
202 if (av1_encoder_get_relative_dist(
203 ref_display_order_hint[ref_frame_list[i] - LAST_FRAME],
204 frame_display_order_hint) < 0)
205 return 1;
206 }
207 }
208 return 0;
209}
210
211 static inline int has_closest_ref_frames(const MV_REFERENCE_FRAME *ref_frame,
212 int8_t closest_past_ref,
213 int8_t closest_future_ref) {
214 int has_closest_past_ref =
215 (ref_frame[0] == closest_past_ref) || (ref_frame[1] == closest_past_ref);
216 int has_closest_future_ref = (ref_frame[0] == closest_future_ref) ||
217 (ref_frame[1] == closest_future_ref);
218 return (has_closest_past_ref && has_closest_future_ref);
219}
220
221 static inline int has_best_pred_mv_sad(const MV_REFERENCE_FRAME *ref_frame,
222 const MACROBLOCK *const x) {
223 int has_best_past_pred_mv_sad = 0;
224 int has_best_future_pred_mv_sad = 0;
225 if (x->best_pred_mv_sad[0] < INT_MAX && x->best_pred_mv_sad[1] < INT_MAX) {
226 has_best_past_pred_mv_sad =
227 (x->pred_mv_sad[ref_frame[0]] == x->best_pred_mv_sad[0]) ||
228 (x->pred_mv_sad[ref_frame[1]] == x->best_pred_mv_sad[0]);
229 has_best_future_pred_mv_sad =
230 (x->pred_mv_sad[ref_frame[0]] == x->best_pred_mv_sad[1]) ||
231 (x->pred_mv_sad[ref_frame[1]] == x->best_pred_mv_sad[1]);
232 }
233 return (has_best_past_pred_mv_sad && has_best_future_pred_mv_sad);
234}
235
236 static inline int prune_ref_by_selective_ref_frame(
237 const AV1_COMP *const cpi, const MACROBLOCK *const x,
238 const MV_REFERENCE_FRAME *const ref_frame,
239 const unsigned int *const ref_display_order_hint) {
240 const SPEED_FEATURES *const sf = &cpi->sf;
241 if (!sf->inter_sf.selective_ref_frame) return 0;
242
243 const int comp_pred = ref_frame[1] > INTRA_FRAME;
244
245 if (sf->inter_sf.selective_ref_frame >= 2 ||
246 (sf->inter_sf.selective_ref_frame == 1 && comp_pred)) {
247 int ref_frame_list[2] = { LAST3_FRAME, LAST2_FRAME };
248
249 if (x != NULL) {
250 // Disable pruning if either tpl suggests that we keep the frame or
251 // the pred_mv gives us the best sad
252 if (x->tpl_keep_ref_frame[LAST3_FRAME] ||
253 x->pred_mv_sad[LAST3_FRAME] == x->best_pred_mv_sad[0]) {
254 ref_frame_list[0] = NONE_FRAME;
255 }
256 if (x->tpl_keep_ref_frame[LAST2_FRAME] ||
257 x->pred_mv_sad[LAST2_FRAME] == x->best_pred_mv_sad[0]) {
258 ref_frame_list[1] = NONE_FRAME;
259 }
260 }
261
262 if (prune_ref(ref_frame, ref_display_order_hint,
263 ref_display_order_hint[GOLDEN_FRAME - LAST_FRAME],
264 ref_frame_list))
265 return 1;
266 }
267
268 if (sf->inter_sf.selective_ref_frame >= 3) {
269 int ref_frame_list[2] = { ALTREF2_FRAME, BWDREF_FRAME };
270
271 if (x != NULL) {
272 // Disable pruning if either tpl suggests that we keep the frame or
273 // the pred_mv gives us the best sad
274 if (x->tpl_keep_ref_frame[ALTREF2_FRAME] ||
275 x->pred_mv_sad[ALTREF2_FRAME] == x->best_pred_mv_sad[0]) {
276 ref_frame_list[0] = NONE_FRAME;
277 }
278 if (x->tpl_keep_ref_frame[BWDREF_FRAME] ||
279 x->pred_mv_sad[BWDREF_FRAME] == x->best_pred_mv_sad[0]) {
280 ref_frame_list[1] = NONE_FRAME;
281 }
282 }
283
284 if (prune_ref(ref_frame, ref_display_order_hint,
285 ref_display_order_hint[LAST_FRAME - LAST_FRAME],
286 ref_frame_list))
287 return 1;
288 }
289
290 if (x != NULL && sf->inter_sf.prune_comp_ref_frames && comp_pred) {
291 int closest_ref_frames = has_closest_ref_frames(
292 ref_frame, cpi->ref_frame_dist_info.nearest_past_ref,
293 cpi->ref_frame_dist_info.nearest_future_ref);
294 if (closest_ref_frames == 0) {
295 // Prune reference frames which are not the closest to the current frame.
296 if (sf->inter_sf.prune_comp_ref_frames >= 2) {
297 return 1;
298 } else if (sf->inter_sf.prune_comp_ref_frames == 1) {
299 // Prune reference frames with non minimum pred_mv_sad.
300 if (has_best_pred_mv_sad(ref_frame, x) == 0) return 1;
301 }
302 }
303 }
304
305 return 0;
306}
307
308// This function will copy the best reference mode information from
309// MB_MODE_INFO_EXT to MB_MODE_INFO_EXT_FRAME.
310 static inline void av1_copy_mbmi_ext_to_mbmi_ext_frame(
311 MB_MODE_INFO_EXT_FRAME *mbmi_ext_best,
312 const MB_MODE_INFO_EXT *const mbmi_ext, uint8_t ref_frame_type) {
313 memcpy(mbmi_ext_best->ref_mv_stack, mbmi_ext->ref_mv_stack[ref_frame_type],
314 sizeof(mbmi_ext->ref_mv_stack[USABLE_REF_MV_STACK_SIZE]));
315 memcpy(mbmi_ext_best->weight, mbmi_ext->weight[ref_frame_type],
316 sizeof(mbmi_ext->weight[USABLE_REF_MV_STACK_SIZE]));
317 mbmi_ext_best->mode_context = mbmi_ext->mode_context[ref_frame_type];
318 mbmi_ext_best->ref_mv_count = mbmi_ext->ref_mv_count[ref_frame_type];
319 memcpy(mbmi_ext_best->global_mvs, mbmi_ext->global_mvs,
320 sizeof(mbmi_ext->global_mvs));
321}
322
323#ifdef __cplusplus
324} // extern "C"
325#endif
326
327#endif // AOM_AV1_ENCODER_RDOPT_H_
block.h
encoder.h
Declares top-level encoder structures and functions.
av1_rd_pick_inter_mode
void av1_rd_pick_inter_mode(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)
AV1 inter mode selection.
Definition rdopt.c:5745
av1_rd_pick_intra_mode_sb
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)
AV1 intra mode selection for intra frames.
Definition rdopt.c:3312
av1_nonrd_pick_inter_mode_sb
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)
AV1 inter mode selection based on Non-RD optimized model.
Definition nonrd_pickmode.c:3188
av1_nonrd_pick_intra_mode
void av1_nonrd_pick_intra_mode(AV1_COMP *cpi, MACROBLOCK *x, RD_STATS *rd_cost, BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx)
AV1 intra mode selection based on Non-RD optimized model.
Definition nonrd_pickmode.c:1556
AV1Common
Top level common structure used by both encoder and decoder.
Definition av1_common_int.h:757
AV1Common::seq_params
SequenceHeader * seq_params
Definition av1_common_int.h:983
AV1Common::mi_params
CommonModeInfoParams mi_params
Definition av1_common_int.h:917
AV1_COMP
Top level encoder structure.
Definition encoder.h:2870
AV1_COMP::sf
SPEED_FEATURES sf
Definition encoder.h:3097
AV1_COMP::ref_frame_dist_info
RefFrameDistanceInfo ref_frame_dist_info
Definition encoder.h:3385
CommonModeInfoParams::mi_alloc_bsize
BLOCK_SIZE mi_alloc_bsize
Definition av1_common_int.h:557
MB_MODE_INFO_EXT_FRAME
Stores best extended mode information at frame level.
Definition block.h:242
MB_MODE_INFO_EXT_FRAME::ref_mv_count
uint8_t ref_mv_count
Number of ref mvs in the drl.
Definition block.h:248
MB_MODE_INFO_EXT_FRAME::weight
uint16_t weight[USABLE_REF_MV_STACK_SIZE]
The weights used to compute the ref mvs.
Definition block.h:246
MB_MODE_INFO_EXT_FRAME::ref_mv_stack
CANDIDATE_MV ref_mv_stack[USABLE_REF_MV_STACK_SIZE]
The reference mv list for the current block.
Definition block.h:244
MB_MODE_INFO_EXT_FRAME::mode_context
int16_t mode_context
Context used to encode the current mode.
Definition block.h:253
MB_MODE_INFO_EXT_FRAME::global_mvs
int_mv global_mvs[REF_FRAMES]
Global mvs.
Definition block.h:251
MB_MODE_INFO_EXT
Extended mode info derived from mbmi.
Definition block.h:222
MB_MODE_INFO_EXT::global_mvs
int_mv global_mvs[REF_FRAMES]
Global mvs.
Definition block.h:231
MB_MODE_INFO_EXT::ref_mv_stack
CANDIDATE_MV ref_mv_stack[MODE_CTX_REF_FRAMES][USABLE_REF_MV_STACK_SIZE]
The reference mv list for the current block.
Definition block.h:225
MB_MODE_INFO_EXT::weight
uint16_t weight[MODE_CTX_REF_FRAMES][USABLE_REF_MV_STACK_SIZE]
The weights used to compute the ref mvs.
Definition block.h:227
MB_MODE_INFO_EXT::mode_context
int16_t mode_context[MODE_CTX_REF_FRAMES]
Context used to encode the current mode.
Definition block.h:233
MB_MODE_INFO_EXT::ref_mv_count
uint8_t ref_mv_count[MODE_CTX_REF_FRAMES]
Number of ref mvs in the drl.
Definition block.h:229
RefFrameDistanceInfo::nearest_past_ref
int8_t nearest_past_ref
Definition encoder.h:2185
RefFrameDistanceInfo::nearest_future_ref
int8_t nearest_future_ref
Definition encoder.h:2189
SPEED_FEATURES
Top level speed vs quality trade off data struture.
Definition speed_features.h:1939
SPEED_FEATURES::inter_sf
INTER_MODE_SPEED_FEATURES inter_sf
Definition speed_features.h:1973
macroblock
Encoder's parameters related to the current coding block.
Definition block.h:878
macroblock::best_pred_mv_sad
int best_pred_mv_sad[2]
The minimum of pred_mv_sad.
Definition block.h:1111
macroblock::pred_mv_sad
int pred_mv_sad[REF_FRAMES]
Sum absolute distortion of the predicted mv for each ref frame.
Definition block.h:1105
macroblock::tpl_keep_ref_frame
uint8_t tpl_keep_ref_frame[REF_FRAMES]
Disables certain ref frame pruning based on tpl.
Definition block.h:1123