2 * Copyright (c) 2012-2013 Oka Motofumi (chikuzen.mo at gmail dot com)
3 * Copyright (c) 2015 Paul B Mahol
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 "libavutil/imgutils.h"
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/pixdesc.h"
25 #include "libavutil/opt.h"
31 typedef struct ThreadData {
35 typedef struct NContext {
47 void (*filter)(uint8_t *dst, const uint8_t *p1, int width,
48 int threshold, const uint8_t *coordinates[], int coord,
52 static int query_formats(AVFilterContext *ctx)
54 static const enum AVPixelFormat pix_fmts[] = {
55 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
56 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
57 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
58 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
59 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
60 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
61 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
62 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
63 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
64 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
65 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
66 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
67 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
68 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
69 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
70 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
71 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
72 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
76 return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
79 static void erosion(uint8_t *dst, const uint8_t *p1, int width,
80 int threshold, const uint8_t *coordinates[], int coord,
85 for (x = 0; x < width; x++) {
87 int limit = FFMAX(min - threshold, 0);
89 for (i = 0; i < 8; i++) {
90 if (coord & (1 << i)) {
91 min = FFMIN(min, *(coordinates[i] + x));
93 min = FFMAX(min, limit);
100 static void erosion16(uint8_t *dstp, const uint8_t *p1, int width,
101 int threshold, const uint8_t *coordinates[], int coord,
104 uint16_t *dst = (uint16_t *)dstp;
107 for (x = 0; x < width; x++) {
108 int min = AV_RN16A(&p1[2 * x]);
109 int limit = FFMAX(min - threshold, 0);
111 for (i = 0; i < 8; i++) {
112 if (coord & (1 << i)) {
113 min = FFMIN(min, AV_RN16A(coordinates[i] + x * 2));
115 min = FFMAX(min, limit);
122 static void dilation(uint8_t *dst, const uint8_t *p1, int width,
123 int threshold, const uint8_t *coordinates[], int coord,
128 for (x = 0; x < width; x++) {
130 int limit = FFMIN(max + threshold, 255);
132 for (i = 0; i < 8; i++) {
133 if (coord & (1 << i)) {
134 max = FFMAX(max, *(coordinates[i] + x));
136 max = FFMIN(max, limit);
143 static void dilation16(uint8_t *dstp, const uint8_t *p1, int width,
144 int threshold, const uint8_t *coordinates[], int coord,
147 uint16_t *dst = (uint16_t *)dstp;
150 for (x = 0; x < width; x++) {
151 int max = AV_RN16A(&p1[x * 2]);
152 int limit = FFMIN(max + threshold, maxc);
154 for (i = 0; i < 8; i++) {
155 if (coord & (1 << i)) {
156 max = FFMAX(max, AV_RN16A(coordinates[i] + x * 2));
158 max = FFMIN(max, limit);
165 static void deflate(uint8_t *dst, const uint8_t *p1, int width,
166 int threshold, const uint8_t *coordinates[], int coord,
171 for (x = 0; x < width; x++) {
173 int limit = FFMAX(p1[x] - threshold, 0);
175 for (i = 0; i < 8; sum += *(coordinates[i++] + x));
177 dst[x] = FFMAX(FFMIN(sum / 8, p1[x]), limit);
181 static void deflate16(uint8_t *dstp, const uint8_t *p1, int width,
182 int threshold, const uint8_t *coordinates[], int coord,
185 uint16_t *dst = (uint16_t *)dstp;
188 for (x = 0; x < width; x++) {
190 int limit = FFMAX(AV_RN16A(&p1[2 * x]) - threshold, 0);
192 for (i = 0; i < 8; sum += AV_RN16A(coordinates[i++] + x * 2));
194 dst[x] = FFMAX(FFMIN(sum / 8, AV_RN16A(&p1[2 * x])), limit);
198 static void inflate(uint8_t *dst, const uint8_t *p1, int width,
199 int threshold, const uint8_t *coordinates[], int coord,
204 for (x = 0; x < width; x++) {
206 int limit = FFMIN(p1[x] + threshold, 255);
208 for (i = 0; i < 8; sum += *(coordinates[i++] + x));
210 dst[x] = FFMIN(FFMAX(sum / 8, p1[x]), limit);
214 static void inflate16(uint8_t *dstp, const uint8_t *p1, int width,
215 int threshold, const uint8_t *coordinates[], int coord,
218 uint16_t *dst = (uint16_t *)dstp;
221 for (x = 0; x < width; x++) {
223 int limit = FFMIN(AV_RN16A(&p1[2 * x]) + threshold, maxc);
225 for (i = 0; i < 8; sum += AV_RN16A(coordinates[i++] + x * 2));
227 dst[x] = FFMIN(FFMAX(sum / 8, AV_RN16A(&p1[x * 2])), limit);
231 static int config_input(AVFilterLink *inlink)
233 AVFilterContext *ctx = inlink->dst;
234 NContext *s = ctx->priv;
235 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
237 s->depth = desc->comp[0].depth;
238 s->max = (1 << s->depth) - 1;
239 s->bpc = (s->depth + 7) / 8;
241 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
242 s->planewidth[0] = s->planewidth[3] = inlink->w;
243 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
244 s->planeheight[0] = s->planeheight[3] = inlink->h;
246 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
248 if (!strcmp(ctx->filter->name, "erosion"))
249 s->filter = s->depth > 8 ? erosion16 : erosion;
250 else if (!strcmp(ctx->filter->name, "dilation"))
251 s->filter = s->depth > 8 ? dilation16 : dilation;
252 else if (!strcmp(ctx->filter->name, "deflate"))
253 s->filter = s->depth > 8 ? deflate16 : deflate;
254 else if (!strcmp(ctx->filter->name, "inflate"))
255 s->filter = s->depth > 8 ? inflate16 : inflate;
260 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
262 NContext *s = ctx->priv;
263 ThreadData *td = arg;
264 AVFrame *out = td->out;
265 AVFrame *in = td->in;
268 for (plane = 0; plane < s->nb_planes; plane++) {
269 const int bpc = s->bpc;
270 const int threshold = s->threshold[plane];
271 const int stride = in->linesize[plane];
272 const int dstride = out->linesize[plane];
273 const int height = s->planeheight[plane];
274 const int width = s->planewidth[plane];
275 const int slice_start = (height * jobnr) / nb_jobs;
276 const int slice_end = (height * (jobnr+1)) / nb_jobs;
277 const uint8_t *src = (const uint8_t *)in->data[plane] + slice_start * stride;
278 uint8_t *dst = out->data[plane] + slice_start * dstride;
281 av_image_copy_plane(dst, dstride, src, stride, width * bpc, slice_end - slice_start);
285 for (y = slice_start; y < slice_end; y++) {
286 const int nh = y > 0;
287 const int ph = y < height - 1;
288 const uint8_t *coordinates[] = { src - nh * stride, src + 1 * bpc - nh * stride, src + 2 * bpc - nh * stride,
290 src + ph * stride, src + 1 * bpc + ph * stride, src + 2 * bpc + ph * stride};
292 const uint8_t *coordinateslb[] = { src + 1 * bpc - nh * stride, src - nh * stride, src + 1 * bpc - nh * stride,
293 src + 1 * bpc, src + 1 * bpc,
294 src + 1 * bpc + ph * stride, src + ph * stride, src + 1 * bpc + ph * stride};
296 const uint8_t *coordinatesrb[] = { src + (width - 2) * bpc - nh * stride, src + (width - 1) * bpc - nh * stride, src + (width - 2) * bpc - nh * stride,
297 src + (width - 2) * bpc, src + (width - 2) * bpc,
298 src + (width - 2) * bpc + ph * stride, src + (width - 1) * bpc + ph * stride, src + (width - 2) * bpc + ph * stride};
300 s->filter(dst, src, 1, threshold, coordinateslb, s->coordinates, s->max);
302 s->filter(dst + 1 * bpc, src + 1 * bpc, width - 2, threshold, coordinates, s->coordinates, s->max);
303 s->filter(dst + (width - 1) * bpc, src + (width - 1) * bpc, 1, threshold, coordinatesrb, s->coordinates, s->max);
314 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
316 AVFilterContext *ctx = inlink->dst;
317 AVFilterLink *outlink = ctx->outputs[0];
318 NContext *s = ctx->priv;
322 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
325 return AVERROR(ENOMEM);
327 av_frame_copy_props(out, in);
331 ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx)));
334 return ff_filter_frame(outlink, out);
337 static const AVFilterPad neighbor_inputs[] = {
340 .type = AVMEDIA_TYPE_VIDEO,
341 .filter_frame = filter_frame,
342 .config_props = config_input,
347 static const AVFilterPad neighbor_outputs[] = {
350 .type = AVMEDIA_TYPE_VIDEO,
355 #define OFFSET(x) offsetof(NContext, x)
356 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
358 #define DEFINE_NEIGHBOR_FILTER(name_, description_) \
359 AVFILTER_DEFINE_CLASS(name_); \
361 const AVFilter ff_vf_##name_ = { \
363 .description = NULL_IF_CONFIG_SMALL(description_), \
364 .priv_size = sizeof(NContext), \
365 .priv_class = &name_##_class, \
366 .query_formats = query_formats, \
367 .inputs = neighbor_inputs, \
368 .outputs = neighbor_outputs, \
369 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC| \
370 AVFILTER_FLAG_SLICE_THREADS, \
371 .process_command = ff_filter_process_command, \
374 /* The following options are shared between all filters here;
375 * the de/inflate filters only use the threshold* options. */
376 #define DEINFLATE_OPTIONS_OFFSET (CONFIG_EROSION_FILTER || CONFIG_DILATION_FILTER)
377 static const AVOption options[] = {
378 #if CONFIG_EROSION_FILTER || CONFIG_DILATION_FILTER
379 { "coordinates", "set coordinates", OFFSET(coordinates), AV_OPT_TYPE_INT, {.i64=255}, 0, 255, FLAGS },
381 { "threshold0", "set threshold for 1st plane", OFFSET(threshold[0]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS },
382 { "threshold1", "set threshold for 2nd plane", OFFSET(threshold[1]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS },
383 { "threshold2", "set threshold for 3rd plane", OFFSET(threshold[2]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS },
384 { "threshold3", "set threshold for 4th plane", OFFSET(threshold[3]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS },
388 #if CONFIG_EROSION_FILTER
390 #define erosion_options options
391 DEFINE_NEIGHBOR_FILTER(erosion, "Apply erosion effect.");
393 #endif /* CONFIG_EROSION_FILTER */
395 #if CONFIG_DILATION_FILTER
397 #define dilation_options options
398 DEFINE_NEIGHBOR_FILTER(dilation, "Apply dilation effect.");
400 #endif /* CONFIG_DILATION_FILTER */
402 #if CONFIG_DEFLATE_FILTER
404 #define deflate_options &options[DEINFLATE_OPTIONS_OFFSET]
405 DEFINE_NEIGHBOR_FILTER(deflate, "Apply deflate effect.");
407 #endif /* CONFIG_DEFLATE_FILTER */
409 #if CONFIG_INFLATE_FILTER
411 #define inflate_options &options[DEINFLATE_OPTIONS_OFFSET]
412 DEFINE_NEIGHBOR_FILTER(inflate, "Apply inflate effect.");
414 #endif /* CONFIG_INFLATE_FILTER */