2 * Copyright (c) 2014-2015 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<@gmail.com>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "motion_estimation.h"
23 #include "libavcodec/mathops.h"
24 #include "libavutil/avassert.h"
25 #include "libavutil/common.h"
26 #include "libavutil/motion_vector.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
33 #include "scene_sad.h"
35 #define ME_MODE_BIDIR 0
36 #define ME_MODE_BILAT 1
38 #define MC_MODE_OBMC 0
39 #define MC_MODE_AOBMC 1
41 #define SCD_METHOD_NONE 0
42 #define SCD_METHOD_FDIFF 1
45 #define NB_PIXEL_MVS 32
46 #define NB_CLUSTERS 128
48 #define ALPHA_MAX 1024
49 #define CLUSTER_THRESHOLD 4
50 #define PX_WEIGHT_MAX 255
51 #define COST_PRED_SCALE 64
53 static const uint8_t obmc_linear32[1024] = {
54 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0,
55 0, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12, 8, 8, 8, 4, 4, 4, 0,
56 0, 4, 8, 8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12, 8, 8, 4, 0,
57 0, 4, 8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12, 8, 4, 0,
58 4, 8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12, 8, 4,
59 4, 8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12, 8, 4,
60 4, 8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16, 8, 4,
61 4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12, 4,
62 4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12, 4,
63 4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16, 4,
64 4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16, 4,
65 4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16, 4,
66 8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20, 8,
67 8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20, 8,
68 8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20, 8,
69 8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24, 8,
70 8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24, 8,
71 8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20, 8,
72 8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20, 8,
73 8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20, 8,
74 4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16, 4,
75 4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16, 4,
76 4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16, 4,
77 4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12, 4,
78 4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12, 4,
79 4, 8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16, 8, 4,
80 4, 8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12, 8, 4,
81 4, 8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12, 8, 4,
82 0, 4, 8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12, 8, 4, 0,
83 0, 4, 8, 8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12, 8, 8, 4, 0,
84 0, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12, 8, 8, 8, 4, 4, 4, 0,
85 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0,
88 static const uint8_t obmc_linear16[256] = {
89 0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0,
90 4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4,
91 4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4,
92 8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8,
93 8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8,
94 12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
95 12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
96 16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
97 16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
98 12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
99 12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
100 8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8,
101 8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8,
102 4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4,
103 4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4,
104 0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0,
107 static const uint8_t obmc_linear8[64] = {
108 4, 12, 20, 28, 28, 20, 12, 4,
109 12, 36, 60, 84, 84, 60, 36, 12,
110 20, 60,100,140,140,100, 60, 20,
111 28, 84,140,196,196,140, 84, 28,
112 28, 84,140,196,196,140, 84, 28,
113 20, 60,100,140,140,100, 60, 20,
114 12, 36, 60, 84, 84, 60, 36, 12,
115 4, 12, 20, 28, 28, 20, 12, 4,
118 static const uint8_t obmc_linear4[16] = {
125 static const uint8_t * const obmc_tab_linear[4]= {
126 obmc_linear32, obmc_linear16, obmc_linear8, obmc_linear4
135 typedef struct Cluster {
140 typedef struct Block {
148 typedef struct PixelMVS {
149 int16_t mvs[NB_PIXEL_MVS][2];
152 typedef struct PixelWeights {
153 uint32_t weights[NB_PIXEL_MVS];
156 typedef struct PixelRefs {
157 int8_t refs[NB_PIXEL_MVS];
161 typedef struct Frame {
166 typedef struct MIContext {
167 const AVClass *class;
168 AVMotionEstContext me_ctx;
169 AVRational frame_rate;
178 Frame frames[NB_FRAMES];
179 Cluster clusters[NB_CLUSTERS];
182 PixelWeights *pixel_weights;
183 PixelRefs *pixel_refs;
184 int (*mv_table[3])[2][2];
186 int b_width, b_height, b_count;
193 double scd_threshold;
200 #define OFFSET(x) offsetof(MIContext, x)
201 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
202 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit }
204 static const AVOption minterpolate_options[] = {
205 { "fps", "output's frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "60"}, 0, INT_MAX, FLAGS },
206 { "mi_mode", "motion interpolation mode", OFFSET(mi_mode), AV_OPT_TYPE_INT, {.i64 = MI_MODE_MCI}, MI_MODE_DUP, MI_MODE_MCI, FLAGS, "mi_mode" },
207 CONST("dup", "duplicate frames", MI_MODE_DUP, "mi_mode"),
208 CONST("blend", "blend frames", MI_MODE_BLEND, "mi_mode"),
209 CONST("mci", "motion compensated interpolation", MI_MODE_MCI, "mi_mode"),
210 { "mc_mode", "motion compensation mode", OFFSET(mc_mode), AV_OPT_TYPE_INT, {.i64 = MC_MODE_OBMC}, MC_MODE_OBMC, MC_MODE_AOBMC, FLAGS, "mc_mode" },
211 CONST("obmc", "overlapped block motion compensation", MC_MODE_OBMC, "mc_mode"),
212 CONST("aobmc", "adaptive overlapped block motion compensation", MC_MODE_AOBMC, "mc_mode"),
213 { "me_mode", "motion estimation mode", OFFSET(me_mode), AV_OPT_TYPE_INT, {.i64 = ME_MODE_BILAT}, ME_MODE_BIDIR, ME_MODE_BILAT, FLAGS, "me_mode" },
214 CONST("bidir", "bidirectional motion estimation", ME_MODE_BIDIR, "me_mode"),
215 CONST("bilat", "bilateral motion estimation", ME_MODE_BILAT, "me_mode"),
216 { "me", "motion estimation method", OFFSET(me_method), AV_OPT_TYPE_INT, {.i64 = AV_ME_METHOD_EPZS}, AV_ME_METHOD_ESA, AV_ME_METHOD_UMH, FLAGS, "me" },
217 CONST("esa", "exhaustive search", AV_ME_METHOD_ESA, "me"),
218 CONST("tss", "three step search", AV_ME_METHOD_TSS, "me"),
219 CONST("tdls", "two dimensional logarithmic search", AV_ME_METHOD_TDLS, "me"),
220 CONST("ntss", "new three step search", AV_ME_METHOD_NTSS, "me"),
221 CONST("fss", "four step search", AV_ME_METHOD_FSS, "me"),
222 CONST("ds", "diamond search", AV_ME_METHOD_DS, "me"),
223 CONST("hexbs", "hexagon-based search", AV_ME_METHOD_HEXBS, "me"),
224 CONST("epzs", "enhanced predictive zonal search", AV_ME_METHOD_EPZS, "me"),
225 CONST("umh", "uneven multi-hexagon search", AV_ME_METHOD_UMH, "me"),
226 { "mb_size", "macroblock size", OFFSET(mb_size), AV_OPT_TYPE_INT, {.i64 = 16}, 4, 16, FLAGS },
227 { "search_param", "search parameter", OFFSET(search_param), AV_OPT_TYPE_INT, {.i64 = 32}, 4, INT_MAX, FLAGS },
228 { "vsbmc", "variable-size block motion compensation", OFFSET(vsbmc), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS },
229 { "scd", "scene change detection method", OFFSET(scd_method), AV_OPT_TYPE_INT, {.i64 = SCD_METHOD_FDIFF}, SCD_METHOD_NONE, SCD_METHOD_FDIFF, FLAGS, "scene" },
230 CONST("none", "disable detection", SCD_METHOD_NONE, "scene"),
231 CONST("fdiff", "frame difference", SCD_METHOD_FDIFF, "scene"),
232 { "scd_threshold", "scene change threshold", OFFSET(scd_threshold), AV_OPT_TYPE_DOUBLE, {.dbl = 5.0}, 0, 100.0, FLAGS },
236 AVFILTER_DEFINE_CLASS(minterpolate);
238 static int query_formats(AVFilterContext *ctx)
240 static const enum AVPixelFormat pix_fmts[] = {
241 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
242 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
243 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
244 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
245 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
247 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
252 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
254 return AVERROR(ENOMEM);
255 return ff_set_common_formats(ctx, fmts_list);
258 static uint64_t get_sbad(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
260 uint8_t *data_cur = me_ctx->data_cur;
261 uint8_t *data_next = me_ctx->data_ref;
262 int linesize = me_ctx->linesize;
263 int mv_x1 = x_mv - x;
264 int mv_y1 = y_mv - y;
265 int mv_x, mv_y, i, j;
268 x = av_clip(x, me_ctx->x_min, me_ctx->x_max);
269 y = av_clip(y, me_ctx->y_min, me_ctx->y_max);
270 mv_x = av_clip(x_mv - x, -FFMIN(x - me_ctx->x_min, me_ctx->x_max - x), FFMIN(x - me_ctx->x_min, me_ctx->x_max - x));
271 mv_y = av_clip(y_mv - y, -FFMIN(y - me_ctx->y_min, me_ctx->y_max - y), FFMIN(y - me_ctx->y_min, me_ctx->y_max - y));
273 data_cur += (y + mv_y) * linesize;
274 data_next += (y - mv_y) * linesize;
276 for (j = 0; j < me_ctx->mb_size; j++)
277 for (i = 0; i < me_ctx->mb_size; i++)
278 sbad += FFABS(data_cur[x + mv_x + i + j * linesize] - data_next[x - mv_x + i + j * linesize]);
280 return sbad + (FFABS(mv_x1 - me_ctx->pred_x) + FFABS(mv_y1 - me_ctx->pred_y)) * COST_PRED_SCALE;
283 static uint64_t get_sbad_ob(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
285 uint8_t *data_cur = me_ctx->data_cur;
286 uint8_t *data_next = me_ctx->data_ref;
287 int linesize = me_ctx->linesize;
288 int x_min = me_ctx->x_min + me_ctx->mb_size / 2;
289 int x_max = me_ctx->x_max - me_ctx->mb_size / 2;
290 int y_min = me_ctx->y_min + me_ctx->mb_size / 2;
291 int y_max = me_ctx->y_max - me_ctx->mb_size / 2;
292 int mv_x1 = x_mv - x;
293 int mv_y1 = y_mv - y;
294 int mv_x, mv_y, i, j;
297 x = av_clip(x, x_min, x_max);
298 y = av_clip(y, y_min, y_max);
299 mv_x = av_clip(x_mv - x, -FFMIN(x - x_min, x_max - x), FFMIN(x - x_min, x_max - x));
300 mv_y = av_clip(y_mv - y, -FFMIN(y - y_min, y_max - y), FFMIN(y - y_min, y_max - y));
302 for (j = -me_ctx->mb_size / 2; j < me_ctx->mb_size * 3 / 2; j++)
303 for (i = -me_ctx->mb_size / 2; i < me_ctx->mb_size * 3 / 2; i++)
304 sbad += FFABS(data_cur[x + mv_x + i + (y + mv_y + j) * linesize] - data_next[x - mv_x + i + (y - mv_y + j) * linesize]);
306 return sbad + (FFABS(mv_x1 - me_ctx->pred_x) + FFABS(mv_y1 - me_ctx->pred_y)) * COST_PRED_SCALE;
309 static uint64_t get_sad_ob(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
311 uint8_t *data_ref = me_ctx->data_ref;
312 uint8_t *data_cur = me_ctx->data_cur;
313 int linesize = me_ctx->linesize;
314 int x_min = me_ctx->x_min + me_ctx->mb_size / 2;
315 int x_max = me_ctx->x_max - me_ctx->mb_size / 2;
316 int y_min = me_ctx->y_min + me_ctx->mb_size / 2;
317 int y_max = me_ctx->y_max - me_ctx->mb_size / 2;
323 x = av_clip(x, x_min, x_max);
324 y = av_clip(y, y_min, y_max);
325 x_mv = av_clip(x_mv, x_min, x_max);
326 y_mv = av_clip(y_mv, y_min, y_max);
328 for (j = -me_ctx->mb_size / 2; j < me_ctx->mb_size * 3 / 2; j++)
329 for (i = -me_ctx->mb_size / 2; i < me_ctx->mb_size * 3 / 2; i++)
330 sad += FFABS(data_ref[x_mv + i + (y_mv + j) * linesize] - data_cur[x + i + (y + j) * linesize]);
332 return sad + (FFABS(mv_x - me_ctx->pred_x) + FFABS(mv_y - me_ctx->pred_y)) * COST_PRED_SCALE;
335 static int config_input(AVFilterLink *inlink)
337 MIContext *mi_ctx = inlink->dst->priv;
338 AVMotionEstContext *me_ctx = &mi_ctx->me_ctx;
339 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
340 const int height = inlink->h;
341 const int width = inlink->w;
344 mi_ctx->log2_chroma_h = desc->log2_chroma_h;
345 mi_ctx->log2_chroma_w = desc->log2_chroma_w;
347 mi_ctx->nb_planes = av_pix_fmt_count_planes(inlink->format);
349 mi_ctx->log2_mb_size = av_ceil_log2_c(mi_ctx->mb_size);
350 mi_ctx->mb_size = 1 << mi_ctx->log2_mb_size;
352 mi_ctx->b_width = width >> mi_ctx->log2_mb_size;
353 mi_ctx->b_height = height >> mi_ctx->log2_mb_size;
354 mi_ctx->b_count = mi_ctx->b_width * mi_ctx->b_height;
356 for (i = 0; i < NB_FRAMES; i++) {
357 Frame *frame = &mi_ctx->frames[i];
358 frame->blocks = av_mallocz_array(mi_ctx->b_count, sizeof(Block));
360 return AVERROR(ENOMEM);
363 if (mi_ctx->mi_mode == MI_MODE_MCI) {
364 mi_ctx->pixel_mvs = av_mallocz_array(width * height, sizeof(PixelMVS));
365 mi_ctx->pixel_weights = av_mallocz_array(width * height, sizeof(PixelWeights));
366 mi_ctx->pixel_refs = av_mallocz_array(width * height, sizeof(PixelRefs));
367 if (!mi_ctx->pixel_mvs || !mi_ctx->pixel_weights || !mi_ctx->pixel_refs) {
368 ret = AVERROR(ENOMEM);
372 if (mi_ctx->me_mode == ME_MODE_BILAT)
373 if (!(mi_ctx->int_blocks = av_mallocz_array(mi_ctx->b_count, sizeof(Block))))
374 return AVERROR(ENOMEM);
376 if (mi_ctx->me_method == AV_ME_METHOD_EPZS) {
377 for (i = 0; i < 3; i++) {
378 mi_ctx->mv_table[i] = av_mallocz_array(mi_ctx->b_count, sizeof(*mi_ctx->mv_table[0]));
379 if (!mi_ctx->mv_table[i])
380 return AVERROR(ENOMEM);
385 if (mi_ctx->scd_method == SCD_METHOD_FDIFF) {
386 mi_ctx->sad = ff_scene_sad_get_fn(8);
388 return AVERROR(EINVAL);
391 ff_me_init_context(me_ctx, mi_ctx->mb_size, mi_ctx->search_param, width, height, 0, (mi_ctx->b_width - 1) << mi_ctx->log2_mb_size, 0, (mi_ctx->b_height - 1) << mi_ctx->log2_mb_size);
393 if (mi_ctx->me_mode == ME_MODE_BIDIR)
394 me_ctx->get_cost = &get_sad_ob;
395 else if (mi_ctx->me_mode == ME_MODE_BILAT)
396 me_ctx->get_cost = &get_sbad_ob;
400 for (i = 0; i < NB_FRAMES; i++)
401 av_freep(&mi_ctx->frames[i].blocks);
402 av_freep(&mi_ctx->pixel_mvs);
403 av_freep(&mi_ctx->pixel_weights);
404 av_freep(&mi_ctx->pixel_refs);
408 static int config_output(AVFilterLink *outlink)
410 MIContext *mi_ctx = outlink->src->priv;
412 outlink->frame_rate = mi_ctx->frame_rate;
413 outlink->time_base = av_inv_q(mi_ctx->frame_rate);
418 #define ADD_PRED(preds, px, py)\
420 preds.mvs[preds.nb][0] = px;\
421 preds.mvs[preds.nb][1] = py;\
425 static void search_mv(MIContext *mi_ctx, Block *blocks, int mb_x, int mb_y, int dir)
427 AVMotionEstContext *me_ctx = &mi_ctx->me_ctx;
428 AVMotionEstPredictor *preds = me_ctx->preds;
429 Block *block = &blocks[mb_x + mb_y * mi_ctx->b_width];
431 const int x_mb = mb_x << mi_ctx->log2_mb_size;
432 const int y_mb = mb_y << mi_ctx->log2_mb_size;
433 const int mb_i = mb_x + mb_y * mi_ctx->b_width;
434 int mv[2] = {x_mb, y_mb};
436 switch (mi_ctx->me_method) {
437 case AV_ME_METHOD_ESA:
438 ff_me_search_esa(me_ctx, x_mb, y_mb, mv);
440 case AV_ME_METHOD_TSS:
441 ff_me_search_tss(me_ctx, x_mb, y_mb, mv);
443 case AV_ME_METHOD_TDLS:
444 ff_me_search_tdls(me_ctx, x_mb, y_mb, mv);
446 case AV_ME_METHOD_NTSS:
447 ff_me_search_ntss(me_ctx, x_mb, y_mb, mv);
449 case AV_ME_METHOD_FSS:
450 ff_me_search_fss(me_ctx, x_mb, y_mb, mv);
452 case AV_ME_METHOD_DS:
453 ff_me_search_ds(me_ctx, x_mb, y_mb, mv);
455 case AV_ME_METHOD_HEXBS:
456 ff_me_search_hexbs(me_ctx, x_mb, y_mb, mv);
458 case AV_ME_METHOD_EPZS:
463 ADD_PRED(preds[0], 0, 0);
465 //left mb in current frame
467 ADD_PRED(preds[0], mi_ctx->mv_table[0][mb_i - 1][dir][0], mi_ctx->mv_table[0][mb_i - 1][dir][1]);
469 //top mb in current frame
471 ADD_PRED(preds[0], mi_ctx->mv_table[0][mb_i - mi_ctx->b_width][dir][0], mi_ctx->mv_table[0][mb_i - mi_ctx->b_width][dir][1]);
473 //top-right mb in current frame
474 if (mb_y > 0 && mb_x + 1 < mi_ctx->b_width)
475 ADD_PRED(preds[0], mi_ctx->mv_table[0][mb_i - mi_ctx->b_width + 1][dir][0], mi_ctx->mv_table[0][mb_i - mi_ctx->b_width + 1][dir][1]);
478 if (preds[0].nb == 4) {
479 me_ctx->pred_x = mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
480 me_ctx->pred_y = mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
481 } else if (preds[0].nb == 3) {
482 me_ctx->pred_x = mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
483 me_ctx->pred_y = mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
484 } else if (preds[0].nb == 2) {
485 me_ctx->pred_x = preds[0].mvs[1][0];
486 me_ctx->pred_y = preds[0].mvs[1][1];
492 //collocated mb in prev frame
493 ADD_PRED(preds[0], mi_ctx->mv_table[1][mb_i][dir][0], mi_ctx->mv_table[1][mb_i][dir][1]);
495 //accelerator motion vector of collocated block in prev frame
496 ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i][dir][0] + (mi_ctx->mv_table[1][mb_i][dir][0] - mi_ctx->mv_table[2][mb_i][dir][0]),
497 mi_ctx->mv_table[1][mb_i][dir][1] + (mi_ctx->mv_table[1][mb_i][dir][1] - mi_ctx->mv_table[2][mb_i][dir][1]));
499 //left mb in prev frame
501 ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i - 1][dir][0], mi_ctx->mv_table[1][mb_i - 1][dir][1]);
503 //top mb in prev frame
505 ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i - mi_ctx->b_width][dir][0], mi_ctx->mv_table[1][mb_i - mi_ctx->b_width][dir][1]);
507 //right mb in prev frame
508 if (mb_x + 1 < mi_ctx->b_width)
509 ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i + 1][dir][0], mi_ctx->mv_table[1][mb_i + 1][dir][1]);
511 //bottom mb in prev frame
512 if (mb_y + 1 < mi_ctx->b_height)
513 ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i + mi_ctx->b_width][dir][0], mi_ctx->mv_table[1][mb_i + mi_ctx->b_width][dir][1]);
515 ff_me_search_epzs(me_ctx, x_mb, y_mb, mv);
517 mi_ctx->mv_table[0][mb_i][dir][0] = mv[0] - x_mb;
518 mi_ctx->mv_table[0][mb_i][dir][1] = mv[1] - y_mb;
521 case AV_ME_METHOD_UMH:
525 ADD_PRED(preds[0], 0, 0);
527 //left mb in current frame
529 ADD_PRED(preds[0], blocks[mb_i - 1].mvs[dir][0], blocks[mb_i - 1].mvs[dir][1]);
532 //top mb in current frame
533 ADD_PRED(preds[0], blocks[mb_i - mi_ctx->b_width].mvs[dir][0], blocks[mb_i - mi_ctx->b_width].mvs[dir][1]);
535 //top-right mb in current frame
536 if (mb_x + 1 < mi_ctx->b_width)
537 ADD_PRED(preds[0], blocks[mb_i - mi_ctx->b_width + 1].mvs[dir][0], blocks[mb_i - mi_ctx->b_width + 1].mvs[dir][1]);
538 //top-left mb in current frame
540 ADD_PRED(preds[0], blocks[mb_i - mi_ctx->b_width - 1].mvs[dir][0], blocks[mb_i - mi_ctx->b_width - 1].mvs[dir][1]);
544 if (preds[0].nb == 4) {
545 me_ctx->pred_x = mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
546 me_ctx->pred_y = mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
547 } else if (preds[0].nb == 3) {
548 me_ctx->pred_x = mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
549 me_ctx->pred_y = mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
550 } else if (preds[0].nb == 2) {
551 me_ctx->pred_x = preds[0].mvs[1][0];
552 me_ctx->pred_y = preds[0].mvs[1][1];
558 ff_me_search_umh(me_ctx, x_mb, y_mb, mv);
563 block->mvs[dir][0] = mv[0] - x_mb;
564 block->mvs[dir][1] = mv[1] - y_mb;
567 static void bilateral_me(MIContext *mi_ctx)
572 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
573 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
574 block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
579 block->mvs[0][0] = 0;
580 block->mvs[0][1] = 0;
583 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
584 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++)
585 search_mv(mi_ctx, mi_ctx->int_blocks, mb_x, mb_y, 0);
588 static int var_size_bme(MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n)
590 AVMotionEstContext *me_ctx = &mi_ctx->me_ctx;
591 uint64_t cost_sb, cost_old;
592 int mb_size = me_ctx->mb_size;
593 int search_param = me_ctx->search_param;
598 me_ctx->mb_size = 1 << n;
599 cost_old = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb + block->mvs[0][0], y_mb + block->mvs[0][1]);
600 me_ctx->mb_size = mb_size;
608 block->subs = av_mallocz_array(4, sizeof(Block));
610 return AVERROR(ENOMEM);
615 for (y = 0; y < 2; y++)
616 for (x = 0; x < 2; x++) {
617 Block *sb = &block->subs[x + y * 2];
618 int mv[2] = {x_mb + block->mvs[0][0], y_mb + block->mvs[0][1]};
620 me_ctx->mb_size = 1 << (n - 1);
621 me_ctx->search_param = 2;
622 me_ctx->pred_x = block->mvs[0][0];
623 me_ctx->pred_y = block->mvs[0][1];
625 cost_sb = ff_me_search_ds(&mi_ctx->me_ctx, x_mb + block->mvs[0][0], y_mb + block->mvs[0][1], mv);
629 me_ctx->mb_size = mb_size;
630 me_ctx->search_param = search_param;
632 if (cost_sb < cost_old / 4) {
633 sb->mvs[0][0] = mv_x;
634 sb->mvs[0][1] = mv_y;
637 if (ret = var_size_bme(mi_ctx, sb, x_mb + (x << (n - 1)), y_mb + (y << (n - 1)), n - 1))
650 static int cluster_mvs(MIContext *mi_ctx)
652 int changed, c, c_max = 0;
653 int mb_x, mb_y, x, y;
654 int mv_x, mv_y, avg_x, avg_y, dx, dy;
657 Cluster *cluster, *cluster_new;
661 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
662 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
663 block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
665 cluster = &mi_ctx->clusters[c];
666 mv_x = block->mvs[0][0];
667 mv_y = block->mvs[0][1];
672 avg_x = cluster->sum[0] / cluster->nb;
673 avg_y = cluster->sum[1] / cluster->nb;
677 if (FFABS(dx) > CLUSTER_THRESHOLD || FFABS(dy) > CLUSTER_THRESHOLD) {
679 for (d = 1; d < 5; d++)
680 for (y = FFMAX(mb_y - d, 0); y < FFMIN(mb_y + d + 1, mi_ctx->b_height); y++)
681 for (x = FFMAX(mb_x - d, 0); x < FFMIN(mb_x + d + 1, mi_ctx->b_width); x++) {
682 Block *nb = &mi_ctx->int_blocks[x + y * mi_ctx->b_width];
683 if (nb->cid > block->cid) {
684 if (nb->cid < c || c == block->cid)
692 if (c >= NB_CLUSTERS) {
696 cluster_new = &mi_ctx->clusters[c];
697 cluster_new->sum[0] += mv_x;
698 cluster_new->sum[1] += mv_y;
699 cluster->sum[0] -= mv_x;
700 cluster->sum[1] -= mv_y;
704 c_max = FFMAX(c_max, c);
712 /* find boundaries */
713 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
714 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
715 block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
716 for (y = FFMAX(mb_y - 1, 0); y < FFMIN(mb_y + 2, mi_ctx->b_height); y++)
717 for (x = FFMAX(mb_x - 1, 0); x < FFMIN(mb_x + 2, mi_ctx->b_width); x++) {
721 if ((x - mb_x) && (y - mb_y) || !dx && !dy)
724 if (!mb_x || !mb_y || mb_x == mi_ctx->b_width - 1 || mb_y == mi_ctx->b_height - 1)
727 if (block->cid != mi_ctx->int_blocks[x + y * mi_ctx->b_width].cid) {
728 if (!dx && block->cid == mi_ctx->int_blocks[x + (mb_y - dy) * mi_ctx->b_width].cid ||
729 !dy && block->cid == mi_ctx->int_blocks[(mb_x - dx) + y * mi_ctx->b_width].cid) {
730 if (ret = var_size_bme(mi_ctx, block, mb_x << mi_ctx->log2_mb_size, mb_y << mi_ctx->log2_mb_size, mi_ctx->log2_mb_size))
740 static int inject_frame(AVFilterLink *inlink, AVFrame *avf_in)
742 AVFilterContext *ctx = inlink->dst;
743 MIContext *mi_ctx = ctx->priv;
747 av_frame_free(&mi_ctx->frames[0].avf);
748 frame_tmp = mi_ctx->frames[0];
749 memmove(&mi_ctx->frames[0], &mi_ctx->frames[1], sizeof(mi_ctx->frames[0]) * (NB_FRAMES - 1));
750 mi_ctx->frames[NB_FRAMES - 1] = frame_tmp;
751 mi_ctx->frames[NB_FRAMES - 1].avf = avf_in;
753 if (mi_ctx->mi_mode == MI_MODE_MCI) {
755 if (mi_ctx->me_method == AV_ME_METHOD_EPZS) {
756 mi_ctx->mv_table[2] = memcpy(mi_ctx->mv_table[2], mi_ctx->mv_table[1], sizeof(*mi_ctx->mv_table[1]) * mi_ctx->b_count);
757 mi_ctx->mv_table[1] = memcpy(mi_ctx->mv_table[1], mi_ctx->mv_table[0], sizeof(*mi_ctx->mv_table[0]) * mi_ctx->b_count);
760 if (mi_ctx->me_mode == ME_MODE_BIDIR) {
762 if (mi_ctx->frames[1].avf) {
763 for (dir = 0; dir < 2; dir++) {
764 mi_ctx->me_ctx.linesize = mi_ctx->frames[2].avf->linesize[0];
765 mi_ctx->me_ctx.data_cur = mi_ctx->frames[2].avf->data[0];
766 mi_ctx->me_ctx.data_ref = mi_ctx->frames[dir ? 3 : 1].avf->data[0];
768 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
769 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++)
770 search_mv(mi_ctx, mi_ctx->frames[2].blocks, mb_x, mb_y, dir);
774 } else if (mi_ctx->me_mode == ME_MODE_BILAT) {
778 if (!mi_ctx->frames[0].avf)
781 mi_ctx->me_ctx.linesize = mi_ctx->frames[0].avf->linesize[0];
782 mi_ctx->me_ctx.data_cur = mi_ctx->frames[1].avf->data[0];
783 mi_ctx->me_ctx.data_ref = mi_ctx->frames[2].avf->data[0];
785 bilateral_me(mi_ctx);
787 if (mi_ctx->mc_mode == MC_MODE_AOBMC) {
789 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
790 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
791 int x_mb = mb_x << mi_ctx->log2_mb_size;
792 int y_mb = mb_y << mi_ctx->log2_mb_size;
793 block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
795 block->sbad = get_sbad(&mi_ctx->me_ctx, x_mb, y_mb, x_mb + block->mvs[0][0], y_mb + block->mvs[0][1]);
801 for (i = 0; i < NB_CLUSTERS; i++) {
802 mi_ctx->clusters[i].sum[0] = 0;
803 mi_ctx->clusters[i].sum[1] = 0;
804 mi_ctx->clusters[i].nb = 0;
807 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
808 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
809 block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
811 mi_ctx->clusters[0].sum[0] += block->mvs[0][0];
812 mi_ctx->clusters[0].sum[1] += block->mvs[0][1];
815 mi_ctx->clusters[0].nb = mi_ctx->b_count;
817 if (ret = cluster_mvs(mi_ctx))
826 static int detect_scene_change(MIContext *mi_ctx)
828 AVMotionEstContext *me_ctx = &mi_ctx->me_ctx;
829 uint8_t *p1 = mi_ctx->frames[1].avf->data[0];
830 ptrdiff_t linesize1 = mi_ctx->frames[1].avf->linesize[0];
831 uint8_t *p2 = mi_ctx->frames[2].avf->data[0];
832 ptrdiff_t linesize2 = mi_ctx->frames[2].avf->linesize[0];
834 if (mi_ctx->scd_method == SCD_METHOD_FDIFF) {
835 double ret = 0, mafd, diff;
837 mi_ctx->sad(p1, linesize1, p2, linesize2, me_ctx->width, me_ctx->height, &sad);
839 mafd = (double) sad / (me_ctx->height * me_ctx->width * 3);
840 diff = fabs(mafd - mi_ctx->prev_mafd);
841 ret = av_clipf(FFMIN(mafd, diff), 0, 100.0);
842 mi_ctx->prev_mafd = mafd;
844 return ret >= mi_ctx->scd_threshold;
850 #define ADD_PIXELS(b_weight, mv_x, mv_y)\
852 if (!b_weight || pixel_refs->nb + 1 >= NB_PIXEL_MVS)\
854 pixel_refs->refs[pixel_refs->nb] = 1;\
855 pixel_weights->weights[pixel_refs->nb] = b_weight * (ALPHA_MAX - alpha);\
856 pixel_mvs->mvs[pixel_refs->nb][0] = av_clip((mv_x * alpha) / ALPHA_MAX, x_min, x_max);\
857 pixel_mvs->mvs[pixel_refs->nb][1] = av_clip((mv_y * alpha) / ALPHA_MAX, y_min, y_max);\
859 pixel_refs->refs[pixel_refs->nb] = 2;\
860 pixel_weights->weights[pixel_refs->nb] = b_weight * alpha;\
861 pixel_mvs->mvs[pixel_refs->nb][0] = av_clip(-mv_x * (ALPHA_MAX - alpha) / ALPHA_MAX, x_min, x_max);\
862 pixel_mvs->mvs[pixel_refs->nb][1] = av_clip(-mv_y * (ALPHA_MAX - alpha) / ALPHA_MAX, y_min, y_max);\
866 static void bidirectional_obmc(MIContext *mi_ctx, int alpha)
869 int width = mi_ctx->frames[0].avf->width;
870 int height = mi_ctx->frames[0].avf->height;
873 for (y = 0; y < height; y++)
874 for (x = 0; x < width; x++)
875 mi_ctx->pixel_refs[x + y * width].nb = 0;
877 for (dir = 0; dir < 2; dir++)
878 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
879 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
880 int a = dir ? alpha : (ALPHA_MAX - alpha);
881 int mv_x = mi_ctx->frames[2 - dir].blocks[mb_x + mb_y * mi_ctx->b_width].mvs[dir][0];
882 int mv_y = mi_ctx->frames[2 - dir].blocks[mb_x + mb_y * mi_ctx->b_width].mvs[dir][1];
883 int start_x, start_y;
884 int startc_x, startc_y, endc_x, endc_y;
886 start_x = (mb_x << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2 + mv_x * a / ALPHA_MAX;
887 start_y = (mb_y << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2 + mv_y * a / ALPHA_MAX;
889 startc_x = av_clip(start_x, 0, width - 1);
890 startc_y = av_clip(start_y, 0, height - 1);
891 endc_x = av_clip(start_x + (2 << mi_ctx->log2_mb_size), 0, width - 1);
892 endc_y = av_clip(start_y + (2 << mi_ctx->log2_mb_size), 0, height - 1);
899 for (y = startc_y; y < endc_y; y++) {
901 int y_max = height - y - 1;
902 for (x = startc_x; x < endc_x; x++) {
904 int x_max = width - x - 1;
905 int obmc_weight = obmc_tab_linear[4 - mi_ctx->log2_mb_size][(x - start_x) + ((y - start_y) << (mi_ctx->log2_mb_size + 1))];
906 PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
907 PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
908 PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
910 ADD_PIXELS(obmc_weight, mv_x, mv_y);
916 static void set_frame_data(MIContext *mi_ctx, int alpha, AVFrame *avf_out)
920 for (plane = 0; plane < mi_ctx->nb_planes; plane++) {
921 int width = avf_out->width;
922 int height = avf_out->height;
923 int chroma = plane == 1 || plane == 2;
925 for (y = 0; y < height; y++)
926 for (x = 0; x < width; x++) {
930 PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * avf_out->width];
931 PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * avf_out->width];
932 PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * avf_out->width];
934 for (i = 0; i < pixel_refs->nb; i++)
935 weight_sum += pixel_weights->weights[i];
937 if (!weight_sum || !pixel_refs->nb) {
938 pixel_weights->weights[0] = ALPHA_MAX - alpha;
939 pixel_refs->refs[0] = 1;
940 pixel_mvs->mvs[0][0] = 0;
941 pixel_mvs->mvs[0][1] = 0;
942 pixel_weights->weights[1] = alpha;
943 pixel_refs->refs[1] = 2;
944 pixel_mvs->mvs[1][0] = 0;
945 pixel_mvs->mvs[1][1] = 0;
948 weight_sum = ALPHA_MAX;
951 for (i = 0; i < pixel_refs->nb; i++) {
952 Frame *frame = &mi_ctx->frames[pixel_refs->refs[i]];
954 x_mv = (x >> mi_ctx->log2_chroma_w) + pixel_mvs->mvs[i][0] / (1 << mi_ctx->log2_chroma_w);
955 y_mv = (y >> mi_ctx->log2_chroma_h) + pixel_mvs->mvs[i][1] / (1 << mi_ctx->log2_chroma_h);
957 x_mv = x + pixel_mvs->mvs[i][0];
958 y_mv = y + pixel_mvs->mvs[i][1];
961 val += pixel_weights->weights[i] * frame->avf->data[plane][x_mv + y_mv * frame->avf->linesize[plane]];
964 val = ROUNDED_DIV(val, weight_sum);
967 avf_out->data[plane][(x >> mi_ctx->log2_chroma_w) + (y >> mi_ctx->log2_chroma_h) * avf_out->linesize[plane]] = val;
969 avf_out->data[plane][x + y * avf_out->linesize[plane]] = val;
974 static void var_size_bmc(MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n, int alpha)
977 int width = mi_ctx->frames[0].avf->width;
978 int height = mi_ctx->frames[0].avf->height;
980 for (sb_y = 0; sb_y < 2; sb_y++)
981 for (sb_x = 0; sb_x < 2; sb_x++) {
982 Block *sb = &block->subs[sb_x + sb_y * 2];
985 var_size_bmc(mi_ctx, sb, x_mb + (sb_x << (n - 1)), y_mb + (sb_y << (n - 1)), n - 1, alpha);
988 int mv_x = sb->mvs[0][0] * 2;
989 int mv_y = sb->mvs[0][1] * 2;
991 int start_x = x_mb + (sb_x << (n - 1));
992 int start_y = y_mb + (sb_y << (n - 1));
993 int end_x = start_x + (1 << (n - 1));
994 int end_y = start_y + (1 << (n - 1));
996 for (y = start_y; y < end_y; y++) {
998 int y_max = height - y - 1;
999 for (x = start_x; x < end_x; x++) {
1001 int x_max = width - x - 1;
1002 PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
1003 PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
1004 PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
1006 ADD_PIXELS(PX_WEIGHT_MAX, mv_x, mv_y);
1013 static void bilateral_obmc(MIContext *mi_ctx, Block *block, int mb_x, int mb_y, int alpha)
1016 int width = mi_ctx->frames[0].avf->width;
1017 int height = mi_ctx->frames[0].avf->height;
1023 int mv_x = block->mvs[0][0] * 2;
1024 int mv_y = block->mvs[0][1] * 2;
1025 int start_x, start_y;
1026 int startc_x, startc_y, endc_x, endc_y;
1028 if (mi_ctx->mc_mode == MC_MODE_AOBMC)
1029 for (nb_y = FFMAX(0, mb_y - 1); nb_y < FFMIN(mb_y + 2, mi_ctx->b_height); nb_y++)
1030 for (nb_x = FFMAX(0, mb_x - 1); nb_x < FFMIN(mb_x + 2, mi_ctx->b_width); nb_x++) {
1031 int x_nb = nb_x << mi_ctx->log2_mb_size;
1032 int y_nb = nb_y << mi_ctx->log2_mb_size;
1034 if (nb_x - mb_x || nb_y - mb_y)
1035 sbads[nb_x - mb_x + 1 + (nb_y - mb_y + 1) * 3] = get_sbad(&mi_ctx->me_ctx, x_nb, y_nb, x_nb + block->mvs[0][0], y_nb + block->mvs[0][1]);
1038 start_x = (mb_x << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2;
1039 start_y = (mb_y << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2;
1041 startc_x = av_clip(start_x, 0, width - 1);
1042 startc_y = av_clip(start_y, 0, height - 1);
1043 endc_x = av_clip(start_x + (2 << mi_ctx->log2_mb_size), 0, width - 1);
1044 endc_y = av_clip(start_y + (2 << mi_ctx->log2_mb_size), 0, height - 1);
1046 for (y = startc_y; y < endc_y; y++) {
1048 int y_max = height - y - 1;
1049 for (x = startc_x; x < endc_x; x++) {
1051 int x_max = width - x - 1;
1052 int obmc_weight = obmc_tab_linear[4 - mi_ctx->log2_mb_size][(x - start_x) + ((y - start_y) << (mi_ctx->log2_mb_size + 1))];
1053 PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
1054 PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
1055 PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
1057 if (mi_ctx->mc_mode == MC_MODE_AOBMC) {
1058 nb_x = (((x - start_x) >> (mi_ctx->log2_mb_size - 1)) * 2 - 3) / 2;
1059 nb_y = (((y - start_y) >> (mi_ctx->log2_mb_size - 1)) * 2 - 3) / 2;
1062 uint64_t sbad = sbads[nb_x + 1 + (nb_y + 1) * 3];
1063 nb = &mi_ctx->int_blocks[mb_x + nb_x + (mb_y + nb_y) * mi_ctx->b_width];
1065 if (sbad && sbad != UINT64_MAX && nb->sbad != UINT64_MAX) {
1066 int phi = av_clip(ALPHA_MAX * nb->sbad / sbad, 0, ALPHA_MAX);
1067 obmc_weight = obmc_weight * phi / ALPHA_MAX;
1072 ADD_PIXELS(obmc_weight, mv_x, mv_y);
1077 static void interpolate(AVFilterLink *inlink, AVFrame *avf_out)
1079 AVFilterContext *ctx = inlink->dst;
1080 AVFilterLink *outlink = ctx->outputs[0];
1081 MIContext *mi_ctx = ctx->priv;
1086 pts = av_rescale(avf_out->pts, (int64_t) ALPHA_MAX * outlink->time_base.num * inlink->time_base.den,
1087 (int64_t) outlink->time_base.den * inlink->time_base.num);
1089 alpha = (pts - mi_ctx->frames[1].avf->pts * ALPHA_MAX) / (mi_ctx->frames[2].avf->pts - mi_ctx->frames[1].avf->pts);
1090 alpha = av_clip(alpha, 0, ALPHA_MAX);
1092 if (alpha == 0 || alpha == ALPHA_MAX) {
1093 av_frame_copy(avf_out, alpha ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1097 if (mi_ctx->scene_changed) {
1098 /* duplicate frame */
1099 av_frame_copy(avf_out, alpha > ALPHA_MAX / 2 ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1103 switch(mi_ctx->mi_mode) {
1105 av_frame_copy(avf_out, alpha > ALPHA_MAX / 2 ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1109 for (plane = 0; plane < mi_ctx->nb_planes; plane++) {
1110 int width = avf_out->width;
1111 int height = avf_out->height;
1113 if (plane == 1 || plane == 2) {
1114 width = AV_CEIL_RSHIFT(width, mi_ctx->log2_chroma_w);
1115 height = AV_CEIL_RSHIFT(height, mi_ctx->log2_chroma_h);
1118 for (y = 0; y < height; y++) {
1119 for (x = 0; x < width; x++) {
1120 avf_out->data[plane][x + y * avf_out->linesize[plane]] =
1121 (alpha * mi_ctx->frames[2].avf->data[plane][x + y * mi_ctx->frames[2].avf->linesize[plane]] +
1122 (ALPHA_MAX - alpha) * mi_ctx->frames[1].avf->data[plane][x + y * mi_ctx->frames[1].avf->linesize[plane]] + 512) >> 10;
1129 if (mi_ctx->me_mode == ME_MODE_BIDIR) {
1130 bidirectional_obmc(mi_ctx, alpha);
1131 set_frame_data(mi_ctx, alpha, avf_out);
1133 } else if (mi_ctx->me_mode == ME_MODE_BILAT) {
1137 for (y = 0; y < mi_ctx->frames[0].avf->height; y++)
1138 for (x = 0; x < mi_ctx->frames[0].avf->width; x++)
1139 mi_ctx->pixel_refs[x + y * mi_ctx->frames[0].avf->width].nb = 0;
1141 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
1142 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
1143 block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
1146 var_size_bmc(mi_ctx, block, mb_x << mi_ctx->log2_mb_size, mb_y << mi_ctx->log2_mb_size, mi_ctx->log2_mb_size, alpha);
1148 bilateral_obmc(mi_ctx, block, mb_x, mb_y, alpha);
1152 set_frame_data(mi_ctx, alpha, avf_out);
1159 static int filter_frame(AVFilterLink *inlink, AVFrame *avf_in)
1161 AVFilterContext *ctx = inlink->dst;
1162 AVFilterLink *outlink = ctx->outputs[0];
1163 MIContext *mi_ctx = ctx->priv;
1166 if (avf_in->pts == AV_NOPTS_VALUE) {
1167 ret = ff_filter_frame(ctx->outputs[0], avf_in);
1171 if (!mi_ctx->frames[NB_FRAMES - 1].avf || avf_in->pts < mi_ctx->frames[NB_FRAMES - 1].avf->pts) {
1172 av_log(ctx, AV_LOG_VERBOSE, "Initializing out pts from input pts %"PRId64"\n", avf_in->pts);
1173 mi_ctx->out_pts = av_rescale_q(avf_in->pts, inlink->time_base, outlink->time_base);
1176 if (!mi_ctx->frames[NB_FRAMES - 1].avf)
1177 if (ret = inject_frame(inlink, av_frame_clone(avf_in)))
1180 if (ret = inject_frame(inlink, avf_in))
1183 if (!mi_ctx->frames[0].avf)
1186 mi_ctx->scene_changed = detect_scene_change(mi_ctx);
1191 if (av_compare_ts(mi_ctx->out_pts, outlink->time_base, mi_ctx->frames[2].avf->pts, inlink->time_base) > 0)
1194 if (!(avf_out = ff_get_video_buffer(ctx->outputs[0], inlink->w, inlink->h)))
1195 return AVERROR(ENOMEM);
1197 av_frame_copy_props(avf_out, mi_ctx->frames[NB_FRAMES - 1].avf);
1198 avf_out->pts = mi_ctx->out_pts++;
1200 interpolate(inlink, avf_out);
1202 if ((ret = ff_filter_frame(ctx->outputs[0], avf_out)) < 0)
1209 static av_cold void free_blocks(Block *block, int sb)
1212 free_blocks(block->subs, 1);
1217 static av_cold void uninit(AVFilterContext *ctx)
1219 MIContext *mi_ctx = ctx->priv;
1222 av_freep(&mi_ctx->pixel_mvs);
1223 av_freep(&mi_ctx->pixel_weights);
1224 av_freep(&mi_ctx->pixel_refs);
1225 if (mi_ctx->int_blocks)
1226 for (m = 0; m < mi_ctx->b_count; m++)
1227 free_blocks(&mi_ctx->int_blocks[m], 0);
1228 av_freep(&mi_ctx->int_blocks);
1230 for (i = 0; i < NB_FRAMES; i++) {
1231 Frame *frame = &mi_ctx->frames[i];
1232 av_freep(&frame->blocks);
1233 av_frame_free(&frame->avf);
1236 for (i = 0; i < 3; i++)
1237 av_freep(&mi_ctx->mv_table[i]);
1240 static const AVFilterPad minterpolate_inputs[] = {
1243 .type = AVMEDIA_TYPE_VIDEO,
1244 .filter_frame = filter_frame,
1245 .config_props = config_input,
1250 static const AVFilterPad minterpolate_outputs[] = {
1253 .type = AVMEDIA_TYPE_VIDEO,
1254 .config_props = config_output,
1259 AVFilter ff_vf_minterpolate = {
1260 .name = "minterpolate",
1261 .description = NULL_IF_CONFIG_SMALL("Frame rate conversion using Motion Interpolation."),
1262 .priv_size = sizeof(MIContext),
1263 .priv_class = &minterpolate_class,
1265 .query_formats = query_formats,
1266 .inputs = minterpolate_inputs,
1267 .outputs = minterpolate_outputs,