2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libavutil/attributes.h"
20 #include "libavutil/common.h"
21 #include "libavutil/eval.h"
22 #include "libavutil/imgutils.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
31 typedef struct LimiterContext {
41 LimiterDSPContext dsp;
44 #define OFFSET(x) offsetof(LimiterContext, x)
45 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
47 static const AVOption limiter_options[] = {
48 { "min", "set min value", OFFSET(min), AV_OPT_TYPE_INT, {.i64=0}, 0, 65535, .flags = FLAGS },
49 { "max", "set max value", OFFSET(max), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, .flags = FLAGS },
50 { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS },
54 AVFILTER_DEFINE_CLASS(limiter);
56 static av_cold int init(AVFilterContext *ctx)
58 LimiterContext *s = ctx->priv;
61 return AVERROR(EINVAL);
65 static int query_formats(AVFilterContext *ctx)
67 static const enum AVPixelFormat pix_fmts[] = {
68 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
69 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
70 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
71 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
72 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
73 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
74 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
75 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
76 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
77 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
78 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
79 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
80 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
81 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
82 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
83 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
84 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
88 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
90 return AVERROR(ENOMEM);
91 return ff_set_common_formats(ctx, fmts_list);
94 static void limiter8(const uint8_t *src, uint8_t *dst,
95 ptrdiff_t slinesize, ptrdiff_t dlinesize,
96 int w, int h, int min, int max)
100 for (y = 0; y < h; y++) {
101 for (x = 0; x < w; x++) {
102 dst[x] = av_clip(src[x], min, max);
110 static void limiter16(const uint8_t *ssrc, uint8_t *ddst,
111 ptrdiff_t slinesize, ptrdiff_t dlinesize,
112 int w, int h, int min, int max)
114 const uint16_t *src = (const uint16_t *)ssrc;
115 uint16_t *dst = (uint16_t *)ddst;
121 for (y = 0; y < h; y++) {
122 for (x = 0; x < w; x++) {
123 dst[x] = av_clip(src[x], min, max);
131 static int config_props(AVFilterLink *inlink)
133 AVFilterContext *ctx = inlink->dst;
134 LimiterContext *s = ctx->priv;
135 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
138 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
140 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
143 hsub = desc->log2_chroma_w;
144 vsub = desc->log2_chroma_h;
145 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
146 s->height[0] = s->height[3] = inlink->h;
147 s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
148 s->width[0] = s->width[3] = inlink->w;
150 if (desc->comp[0].depth == 8) {
151 s->dsp.limiter = limiter8;
152 s->max = FFMIN(s->max, 255);
153 s->min = FFMIN(s->min, 255);
155 s->dsp.limiter = limiter16;
159 ff_limiter_init_x86(&s->dsp, desc->comp[0].depth);
164 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
166 AVFilterContext *ctx = inlink->dst;
167 LimiterContext *s = ctx->priv;
168 AVFilterLink *outlink = ctx->outputs[0];
172 if (av_frame_is_writable(in)) {
175 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
178 return AVERROR(ENOMEM);
180 av_frame_copy_props(out, in);
183 for (p = 0; p < s->nb_planes; p++) {
184 if (!((1 << p) & s->planes)) {
186 av_image_copy_plane(out->data[p], out->linesize[p], in->data[p], in->linesize[p],
187 s->linesize[p], s->height[p]);
191 s->dsp.limiter(in->data[p], out->data[p],
192 in->linesize[p], out->linesize[p],
193 s->width[p], s->height[p],
200 return ff_filter_frame(outlink, out);
203 static const AVFilterPad inputs[] = {
206 .type = AVMEDIA_TYPE_VIDEO,
207 .filter_frame = filter_frame,
208 .config_props = config_props,
213 static const AVFilterPad outputs[] = {
216 .type = AVMEDIA_TYPE_VIDEO,
221 AVFilter ff_vf_limiter = {
223 .description = NULL_IF_CONFIG_SMALL("Limit pixels components to the specified range."),
224 .priv_size = sizeof(LimiterContext),
225 .priv_class = &limiter_class,
227 .query_formats = query_formats,
230 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,