| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2017 Paul B Mahol | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "libavutil/opt.h" | ||
| 22 | #include "libavutil/pixdesc.h" | ||
| 23 | #include "avfilter.h" | ||
| 24 | #include "filters.h" | ||
| 25 | |||
| 26 | typedef struct DespillContext { | ||
| 27 | const AVClass *class; | ||
| 28 | |||
| 29 | int co[4]; /* color offsets rgba */ | ||
| 30 | |||
| 31 | int alpha; | ||
| 32 | int type; | ||
| 33 | float spillmix; | ||
| 34 | float spillexpand; | ||
| 35 | float redscale; | ||
| 36 | float greenscale; | ||
| 37 | float bluescale; | ||
| 38 | float brightness; | ||
| 39 | } DespillContext; | ||
| 40 | |||
| 41 | ✗ | static int do_despill_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) | |
| 42 | { | ||
| 43 | ✗ | DespillContext *s = ctx->priv; | |
| 44 | ✗ | AVFrame *frame = arg; | |
| 45 | ✗ | const int ro = s->co[0], go = s->co[1], bo = s->co[2], ao = s->co[3]; | |
| 46 | ✗ | const int slice_start = (frame->height * jobnr) / nb_jobs; | |
| 47 | ✗ | const int slice_end = (frame->height * (jobnr + 1)) / nb_jobs; | |
| 48 | ✗ | const float brightness = s->brightness; | |
| 49 | ✗ | const float redscale = s->redscale; | |
| 50 | ✗ | const float greenscale = s->greenscale; | |
| 51 | ✗ | const float bluescale = s->bluescale; | |
| 52 | ✗ | const float spillmix = s->spillmix; | |
| 53 | ✗ | const float factor = (1.f - spillmix) * (1.f - s->spillexpand); | |
| 54 | float red, green, blue; | ||
| 55 | int x, y; | ||
| 56 | |||
| 57 | ✗ | for (y = slice_start; y < slice_end; y++) { | |
| 58 | ✗ | uint8_t *dst = frame->data[0] + y * frame->linesize[0]; | |
| 59 | |||
| 60 | ✗ | for (x = 0; x < frame->width; x++) { | |
| 61 | float spillmap; | ||
| 62 | |||
| 63 | ✗ | red = dst[x * 4 + ro] / 255.f; | |
| 64 | ✗ | green = dst[x * 4 + go] / 255.f; | |
| 65 | ✗ | blue = dst[x * 4 + bo] / 255.f; | |
| 66 | |||
| 67 | ✗ | if (s->type) { | |
| 68 | ✗ | spillmap = FFMAX(blue - (red * spillmix + green * factor), 0.f); | |
| 69 | } else { | ||
| 70 | ✗ | spillmap = FFMAX(green - (red * spillmix + blue * factor), 0.f); | |
| 71 | } | ||
| 72 | |||
| 73 | ✗ | red = FFMAX(red + spillmap * redscale + brightness * spillmap, 0.f); | |
| 74 | ✗ | green = FFMAX(green + spillmap * greenscale + brightness * spillmap, 0.f); | |
| 75 | ✗ | blue = FFMAX(blue + spillmap * bluescale + brightness * spillmap, 0.f); | |
| 76 | |||
| 77 | ✗ | dst[x * 4 + ro] = av_clip_uint8(red * 255); | |
| 78 | ✗ | dst[x * 4 + go] = av_clip_uint8(green * 255); | |
| 79 | ✗ | dst[x * 4 + bo] = av_clip_uint8(blue * 255); | |
| 80 | ✗ | if (s->alpha) { | |
| 81 | ✗ | spillmap = 1.f - spillmap; | |
| 82 | ✗ | dst[x * 4 + ao] = av_clip_uint8(spillmap * 255); | |
| 83 | } | ||
| 84 | } | ||
| 85 | } | ||
| 86 | |||
| 87 | ✗ | return 0; | |
| 88 | } | ||
| 89 | |||
| 90 | ✗ | static int filter_frame(AVFilterLink *link, AVFrame *frame) | |
| 91 | { | ||
| 92 | ✗ | AVFilterContext *ctx = link->dst; | |
| 93 | int ret; | ||
| 94 | |||
| 95 | ✗ | if (ret = ff_filter_execute(ctx, do_despill_slice, frame, NULL, | |
| 96 | ✗ | FFMIN(frame->height, ff_filter_get_nb_threads(ctx)))) | |
| 97 | ✗ | return ret; | |
| 98 | |||
| 99 | ✗ | return ff_filter_frame(ctx->outputs[0], frame); | |
| 100 | } | ||
| 101 | |||
| 102 | ✗ | static av_cold int config_output(AVFilterLink *outlink) | |
| 103 | { | ||
| 104 | ✗ | AVFilterContext *ctx = outlink->src; | |
| 105 | ✗ | DespillContext *s = ctx->priv; | |
| 106 | ✗ | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format); | |
| 107 | int i; | ||
| 108 | |||
| 109 | ✗ | for (i = 0; i < 4; ++i) | |
| 110 | ✗ | s->co[i] = desc->comp[i].offset; | |
| 111 | |||
| 112 | ✗ | return 0; | |
| 113 | } | ||
| 114 | |||
| 115 | static const enum AVPixelFormat pixel_fmts[] = { | ||
| 116 | AV_PIX_FMT_ARGB, | ||
| 117 | AV_PIX_FMT_RGBA, | ||
| 118 | AV_PIX_FMT_ABGR, | ||
| 119 | AV_PIX_FMT_BGRA, | ||
| 120 | AV_PIX_FMT_NONE | ||
| 121 | }; | ||
| 122 | |||
| 123 | static const AVFilterPad despill_inputs[] = { | ||
| 124 | { | ||
| 125 | .name = "default", | ||
| 126 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 127 | .flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE, | ||
| 128 | .filter_frame = filter_frame, | ||
| 129 | }, | ||
| 130 | }; | ||
| 131 | |||
| 132 | static const AVFilterPad despill_outputs[] = { | ||
| 133 | { | ||
| 134 | .name = "default", | ||
| 135 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 136 | .config_props = config_output, | ||
| 137 | }, | ||
| 138 | }; | ||
| 139 | |||
| 140 | #define OFFSET(x) offsetof(DespillContext, x) | ||
| 141 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM | ||
| 142 | |||
| 143 | static const AVOption despill_options[] = { | ||
| 144 | { "type", "set the screen type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, .unit = "type" }, | ||
| 145 | { "green", "greenscreen", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, .unit = "type" }, | ||
| 146 | { "blue", "bluescreen", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, .unit = "type" }, | ||
| 147 | { "mix", "set the spillmap mix", OFFSET(spillmix), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS }, | ||
| 148 | { "expand", "set the spillmap expand", OFFSET(spillexpand), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 1, FLAGS }, | ||
| 149 | { "red", "set red scale", OFFSET(redscale), AV_OPT_TYPE_FLOAT, {.dbl=0}, -100, 100, FLAGS }, | ||
| 150 | { "green", "set green scale", OFFSET(greenscale), AV_OPT_TYPE_FLOAT, {.dbl=-1}, -100, 100, FLAGS }, | ||
| 151 | { "blue", "set blue scale", OFFSET(bluescale), AV_OPT_TYPE_FLOAT, {.dbl=0}, -100, 100, FLAGS }, | ||
| 152 | { "brightness", "set brightness", OFFSET(brightness), AV_OPT_TYPE_FLOAT, {.dbl=0}, -10, 10, FLAGS }, | ||
| 153 | { "alpha", "change alpha component", OFFSET(alpha), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS }, | ||
| 154 | { NULL } | ||
| 155 | }; | ||
| 156 | |||
| 157 | AVFILTER_DEFINE_CLASS(despill); | ||
| 158 | |||
| 159 | const AVFilter ff_vf_despill = { | ||
| 160 | .name = "despill", | ||
| 161 | .description = NULL_IF_CONFIG_SMALL("Despill video."), | ||
| 162 | .priv_size = sizeof(DespillContext), | ||
| 163 | .priv_class = &despill_class, | ||
| 164 | FILTER_INPUTS(despill_inputs), | ||
| 165 | FILTER_OUTPUTS(despill_outputs), | ||
| 166 | FILTER_PIXFMTS_ARRAY(pixel_fmts), | ||
| 167 | .process_command = ff_filter_process_command, | ||
| 168 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, | ||
| 169 | }; | ||
| 170 |