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"
29 #include "libavutil/pixelutils.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;
191 av_pixelutils_sad_fn sad;
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 = av_pixelutils_get_sad_fn(3, 3, 2, mi_ctx);
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;
830 int linesize = me_ctx->linesize;
831 uint8_t *p1 = mi_ctx->frames[1].avf->data[0];
832 uint8_t *p2 = mi_ctx->frames[2].avf->data[0];
834 if (mi_ctx->scd_method == SCD_METHOD_FDIFF) {
835 double ret = 0, mafd, diff;
838 for (sad = y = 0; y < me_ctx->height; y += 8)
839 for (x = 0; x < linesize; x += 8)
840 sad += mi_ctx->sad(p1 + x + y * linesize, linesize, p2 + x + y * linesize, linesize);
843 mafd = (double) sad / (me_ctx->height * me_ctx->width * 3);
844 diff = fabs(mafd - mi_ctx->prev_mafd);
845 ret = av_clipf(FFMIN(mafd, diff), 0, 100.0);
846 mi_ctx->prev_mafd = mafd;
848 return ret >= mi_ctx->scd_threshold;
854 #define ADD_PIXELS(b_weight, mv_x, mv_y)\
856 if (!b_weight || pixel_refs->nb + 1 >= NB_PIXEL_MVS)\
858 pixel_refs->refs[pixel_refs->nb] = 1;\
859 pixel_weights->weights[pixel_refs->nb] = b_weight * (ALPHA_MAX - alpha);\
860 pixel_mvs->mvs[pixel_refs->nb][0] = av_clip((mv_x * alpha) / ALPHA_MAX, x_min, x_max);\
861 pixel_mvs->mvs[pixel_refs->nb][1] = av_clip((mv_y * alpha) / ALPHA_MAX, y_min, y_max);\
863 pixel_refs->refs[pixel_refs->nb] = 2;\
864 pixel_weights->weights[pixel_refs->nb] = b_weight * alpha;\
865 pixel_mvs->mvs[pixel_refs->nb][0] = av_clip(-mv_x * (ALPHA_MAX - alpha) / ALPHA_MAX, x_min, x_max);\
866 pixel_mvs->mvs[pixel_refs->nb][1] = av_clip(-mv_y * (ALPHA_MAX - alpha) / ALPHA_MAX, y_min, y_max);\
870 static void bidirectional_obmc(MIContext *mi_ctx, int alpha)
873 int width = mi_ctx->frames[0].avf->width;
874 int height = mi_ctx->frames[0].avf->height;
877 for (y = 0; y < height; y++)
878 for (x = 0; x < width; x++)
879 mi_ctx->pixel_refs[x + y * width].nb = 0;
881 for (dir = 0; dir < 2; dir++)
882 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
883 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
884 int a = dir ? alpha : (ALPHA_MAX - alpha);
885 int mv_x = mi_ctx->frames[2 - dir].blocks[mb_x + mb_y * mi_ctx->b_width].mvs[dir][0];
886 int mv_y = mi_ctx->frames[2 - dir].blocks[mb_x + mb_y * mi_ctx->b_width].mvs[dir][1];
887 int start_x, start_y;
888 int startc_x, startc_y, endc_x, endc_y;
890 start_x = (mb_x << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2 + mv_x * a / ALPHA_MAX;
891 start_y = (mb_y << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2 + mv_y * a / ALPHA_MAX;
893 startc_x = av_clip(start_x, 0, width - 1);
894 startc_y = av_clip(start_y, 0, height - 1);
895 endc_x = av_clip(start_x + (2 << mi_ctx->log2_mb_size), 0, width - 1);
896 endc_y = av_clip(start_y + (2 << mi_ctx->log2_mb_size), 0, height - 1);
903 for (y = startc_y; y < endc_y; y++) {
905 int y_max = height - y - 1;
906 for (x = startc_x; x < endc_x; x++) {
908 int x_max = width - x - 1;
909 int obmc_weight = obmc_tab_linear[4 - mi_ctx->log2_mb_size][(x - start_x) + ((y - start_y) << (mi_ctx->log2_mb_size + 1))];
910 PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
911 PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
912 PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
914 ADD_PIXELS(obmc_weight, mv_x, mv_y);
920 static void set_frame_data(MIContext *mi_ctx, int alpha, AVFrame *avf_out)
924 for (plane = 0; plane < mi_ctx->nb_planes; plane++) {
925 int width = avf_out->width;
926 int height = avf_out->height;
927 int chroma = plane == 1 || plane == 2;
929 for (y = 0; y < height; y++)
930 for (x = 0; x < width; x++) {
934 PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * avf_out->width];
935 PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * avf_out->width];
936 PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * avf_out->width];
938 for (i = 0; i < pixel_refs->nb; i++)
939 weight_sum += pixel_weights->weights[i];
941 if (!weight_sum || !pixel_refs->nb) {
942 pixel_weights->weights[0] = ALPHA_MAX - alpha;
943 pixel_refs->refs[0] = 1;
944 pixel_mvs->mvs[0][0] = 0;
945 pixel_mvs->mvs[0][1] = 0;
946 pixel_weights->weights[1] = alpha;
947 pixel_refs->refs[1] = 2;
948 pixel_mvs->mvs[1][0] = 0;
949 pixel_mvs->mvs[1][1] = 0;
952 weight_sum = ALPHA_MAX;
955 for (i = 0; i < pixel_refs->nb; i++) {
956 Frame *frame = &mi_ctx->frames[pixel_refs->refs[i]];
958 x_mv = (x >> mi_ctx->log2_chroma_w) + pixel_mvs->mvs[i][0] / (1 << mi_ctx->log2_chroma_w);
959 y_mv = (y >> mi_ctx->log2_chroma_h) + pixel_mvs->mvs[i][1] / (1 << mi_ctx->log2_chroma_h);
961 x_mv = x + pixel_mvs->mvs[i][0];
962 y_mv = y + pixel_mvs->mvs[i][1];
965 val += pixel_weights->weights[i] * frame->avf->data[plane][x_mv + y_mv * frame->avf->linesize[plane]];
968 val = ROUNDED_DIV(val, weight_sum);
971 avf_out->data[plane][(x >> mi_ctx->log2_chroma_w) + (y >> mi_ctx->log2_chroma_h) * avf_out->linesize[plane]] = val;
973 avf_out->data[plane][x + y * avf_out->linesize[plane]] = val;
978 static void var_size_bmc(MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n, int alpha)
981 int width = mi_ctx->frames[0].avf->width;
982 int height = mi_ctx->frames[0].avf->height;
984 for (sb_y = 0; sb_y < 2; sb_y++)
985 for (sb_x = 0; sb_x < 2; sb_x++) {
986 Block *sb = &block->subs[sb_x + sb_y * 2];
989 var_size_bmc(mi_ctx, sb, x_mb + (sb_x << (n - 1)), y_mb + (sb_y << (n - 1)), n - 1, alpha);
992 int mv_x = sb->mvs[0][0] * 2;
993 int mv_y = sb->mvs[0][1] * 2;
995 int start_x = x_mb + (sb_x << (n - 1));
996 int start_y = y_mb + (sb_y << (n - 1));
997 int end_x = start_x + (1 << (n - 1));
998 int end_y = start_y + (1 << (n - 1));
1000 for (y = start_y; y < end_y; y++) {
1002 int y_max = height - y - 1;
1003 for (x = start_x; x < end_x; x++) {
1005 int x_max = width - x - 1;
1006 PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
1007 PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
1008 PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
1010 ADD_PIXELS(PX_WEIGHT_MAX, mv_x, mv_y);
1017 static void bilateral_obmc(MIContext *mi_ctx, Block *block, int mb_x, int mb_y, int alpha)
1020 int width = mi_ctx->frames[0].avf->width;
1021 int height = mi_ctx->frames[0].avf->height;
1027 int mv_x = block->mvs[0][0] * 2;
1028 int mv_y = block->mvs[0][1] * 2;
1029 int start_x, start_y;
1030 int startc_x, startc_y, endc_x, endc_y;
1032 if (mi_ctx->mc_mode == MC_MODE_AOBMC)
1033 for (nb_y = FFMAX(0, mb_y - 1); nb_y < FFMIN(mb_y + 2, mi_ctx->b_height); nb_y++)
1034 for (nb_x = FFMAX(0, mb_x - 1); nb_x < FFMIN(mb_x + 2, mi_ctx->b_width); nb_x++) {
1035 int x_nb = nb_x << mi_ctx->log2_mb_size;
1036 int y_nb = nb_y << mi_ctx->log2_mb_size;
1038 if (nb_x - mb_x || nb_y - mb_y)
1039 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]);
1042 start_x = (mb_x << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2;
1043 start_y = (mb_y << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2;
1045 startc_x = av_clip(start_x, 0, width - 1);
1046 startc_y = av_clip(start_y, 0, height - 1);
1047 endc_x = av_clip(start_x + (2 << mi_ctx->log2_mb_size), 0, width - 1);
1048 endc_y = av_clip(start_y + (2 << mi_ctx->log2_mb_size), 0, height - 1);
1050 for (y = startc_y; y < endc_y; y++) {
1052 int y_max = height - y - 1;
1053 for (x = startc_x; x < endc_x; x++) {
1055 int x_max = width - x - 1;
1056 int obmc_weight = obmc_tab_linear[4 - mi_ctx->log2_mb_size][(x - start_x) + ((y - start_y) << (mi_ctx->log2_mb_size + 1))];
1057 PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
1058 PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
1059 PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
1061 if (mi_ctx->mc_mode == MC_MODE_AOBMC) {
1062 nb_x = (((x - start_x) >> (mi_ctx->log2_mb_size - 1)) * 2 - 3) / 2;
1063 nb_y = (((y - start_y) >> (mi_ctx->log2_mb_size - 1)) * 2 - 3) / 2;
1066 uint64_t sbad = sbads[nb_x + 1 + (nb_y + 1) * 3];
1067 nb = &mi_ctx->int_blocks[mb_x + nb_x + (mb_y + nb_y) * mi_ctx->b_width];
1069 if (sbad && sbad != UINT64_MAX && nb->sbad != UINT64_MAX) {
1070 int phi = av_clip(ALPHA_MAX * nb->sbad / sbad, 0, ALPHA_MAX);
1071 obmc_weight = obmc_weight * phi / ALPHA_MAX;
1076 ADD_PIXELS(obmc_weight, mv_x, mv_y);
1081 static void interpolate(AVFilterLink *inlink, AVFrame *avf_out)
1083 AVFilterContext *ctx = inlink->dst;
1084 AVFilterLink *outlink = ctx->outputs[0];
1085 MIContext *mi_ctx = ctx->priv;
1090 pts = av_rescale(avf_out->pts, (int64_t) ALPHA_MAX * outlink->time_base.num * inlink->time_base.den,
1091 (int64_t) outlink->time_base.den * inlink->time_base.num);
1093 alpha = (pts - mi_ctx->frames[1].avf->pts * ALPHA_MAX) / (mi_ctx->frames[2].avf->pts - mi_ctx->frames[1].avf->pts);
1094 alpha = av_clip(alpha, 0, ALPHA_MAX);
1096 if (alpha == 0 || alpha == ALPHA_MAX) {
1097 av_frame_copy(avf_out, alpha ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1101 if (mi_ctx->scene_changed) {
1102 /* duplicate frame */
1103 av_frame_copy(avf_out, alpha > ALPHA_MAX / 2 ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1107 switch(mi_ctx->mi_mode) {
1109 av_frame_copy(avf_out, alpha > ALPHA_MAX / 2 ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1113 for (plane = 0; plane < mi_ctx->nb_planes; plane++) {
1114 int width = avf_out->width;
1115 int height = avf_out->height;
1117 if (plane == 1 || plane == 2) {
1118 width = AV_CEIL_RSHIFT(width, mi_ctx->log2_chroma_w);
1119 height = AV_CEIL_RSHIFT(height, mi_ctx->log2_chroma_h);
1122 for (y = 0; y < height; y++) {
1123 for (x = 0; x < width; x++) {
1124 avf_out->data[plane][x + y * avf_out->linesize[plane]] =
1125 (alpha * mi_ctx->frames[2].avf->data[plane][x + y * mi_ctx->frames[2].avf->linesize[plane]] +
1126 (ALPHA_MAX - alpha) * mi_ctx->frames[1].avf->data[plane][x + y * mi_ctx->frames[1].avf->linesize[plane]] + 512) >> 10;
1133 if (mi_ctx->me_mode == ME_MODE_BIDIR) {
1134 bidirectional_obmc(mi_ctx, alpha);
1135 set_frame_data(mi_ctx, alpha, avf_out);
1137 } else if (mi_ctx->me_mode == ME_MODE_BILAT) {
1141 for (y = 0; y < mi_ctx->frames[0].avf->height; y++)
1142 for (x = 0; x < mi_ctx->frames[0].avf->width; x++)
1143 mi_ctx->pixel_refs[x + y * mi_ctx->frames[0].avf->width].nb = 0;
1145 for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
1146 for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
1147 block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
1150 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);
1152 bilateral_obmc(mi_ctx, block, mb_x, mb_y, alpha);
1156 set_frame_data(mi_ctx, alpha, avf_out);
1163 static int filter_frame(AVFilterLink *inlink, AVFrame *avf_in)
1165 AVFilterContext *ctx = inlink->dst;
1166 AVFilterLink *outlink = ctx->outputs[0];
1167 MIContext *mi_ctx = ctx->priv;
1170 if (avf_in->pts == AV_NOPTS_VALUE) {
1171 ret = ff_filter_frame(ctx->outputs[0], avf_in);
1175 if (!mi_ctx->frames[NB_FRAMES - 1].avf || avf_in->pts < mi_ctx->frames[NB_FRAMES - 1].avf->pts) {
1176 av_log(ctx, AV_LOG_VERBOSE, "Initializing out pts from input pts %"PRId64"\n", avf_in->pts);
1177 mi_ctx->out_pts = av_rescale_q(avf_in->pts, inlink->time_base, outlink->time_base);
1180 if (!mi_ctx->frames[NB_FRAMES - 1].avf)
1181 if (ret = inject_frame(inlink, av_frame_clone(avf_in)))
1184 if (ret = inject_frame(inlink, avf_in))
1187 if (!mi_ctx->frames[0].avf)
1190 mi_ctx->scene_changed = detect_scene_change(mi_ctx);
1195 if (av_compare_ts(mi_ctx->out_pts, outlink->time_base, mi_ctx->frames[2].avf->pts, inlink->time_base) > 0)
1198 if (!(avf_out = ff_get_video_buffer(ctx->outputs[0], inlink->w, inlink->h)))
1199 return AVERROR(ENOMEM);
1201 av_frame_copy_props(avf_out, mi_ctx->frames[NB_FRAMES - 1].avf);
1202 avf_out->pts = mi_ctx->out_pts++;
1204 interpolate(inlink, avf_out);
1206 if ((ret = ff_filter_frame(ctx->outputs[0], avf_out)) < 0)
1213 static av_cold void free_blocks(Block *block, int sb)
1216 free_blocks(block->subs, 1);
1221 static av_cold void uninit(AVFilterContext *ctx)
1223 MIContext *mi_ctx = ctx->priv;
1226 av_freep(&mi_ctx->pixel_mvs);
1227 av_freep(&mi_ctx->pixel_weights);
1228 av_freep(&mi_ctx->pixel_refs);
1229 if (mi_ctx->int_blocks)
1230 for (m = 0; m < mi_ctx->b_count; m++)
1231 free_blocks(&mi_ctx->int_blocks[m], 0);
1232 av_freep(&mi_ctx->int_blocks);
1234 for (i = 0; i < NB_FRAMES; i++) {
1235 Frame *frame = &mi_ctx->frames[i];
1236 av_freep(&frame->blocks);
1237 av_frame_free(&frame->avf);
1240 for (i = 0; i < 3; i++)
1241 av_freep(&mi_ctx->mv_table[i]);
1244 static const AVFilterPad minterpolate_inputs[] = {
1247 .type = AVMEDIA_TYPE_VIDEO,
1248 .filter_frame = filter_frame,
1249 .config_props = config_input,
1254 static const AVFilterPad minterpolate_outputs[] = {
1257 .type = AVMEDIA_TYPE_VIDEO,
1258 .config_props = config_output,
1263 AVFilter ff_vf_minterpolate = {
1264 .name = "minterpolate",
1265 .description = NULL_IF_CONFIG_SMALL("Frame rate conversion using Motion Interpolation."),
1266 .priv_size = sizeof(MIContext),
1267 .priv_class = &minterpolate_class,
1269 .query_formats = query_formats,
1270 .inputs = minterpolate_inputs,
1271 .outputs = minterpolate_outputs,