| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2014-2015 Michael Niedermayer <michaelni@gmx.at> | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License as published by | ||
| 8 | * the Free Software Foundation; either version 2 of the License, or | ||
| 9 | * (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 | ||
| 14 | * GNU General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU General Public License along | ||
| 17 | * with FFmpeg; if not, write to the Free Software Foundation, Inc., | ||
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 19 | */ | ||
| 20 | |||
| 21 | /** | ||
| 22 | * @todo switch to dualinput | ||
| 23 | */ | ||
| 24 | |||
| 25 | #include "libavutil/mem.h" | ||
| 26 | #include "libavutil/opt.h" | ||
| 27 | #include "filters.h" | ||
| 28 | #include "video.h" | ||
| 29 | |||
| 30 | #include "lavfutils.h" | ||
| 31 | |||
| 32 | enum mode { | ||
| 33 | MODE_COVER, | ||
| 34 | MODE_BLUR, | ||
| 35 | NB_MODES | ||
| 36 | }; | ||
| 37 | |||
| 38 | typedef struct CoverContext { | ||
| 39 | AVClass *class; | ||
| 40 | int mode; | ||
| 41 | char *cover_filename; | ||
| 42 | AVFrame *cover_frame; | ||
| 43 | int width, height; | ||
| 44 | } CoverContext; | ||
| 45 | |||
| 46 | #define OFFSET(x) offsetof(CoverContext, x) | ||
| 47 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM | ||
| 48 | static const AVOption cover_rect_options[] = { | ||
| 49 | { "cover", "cover bitmap filename", OFFSET(cover_filename), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS }, | ||
| 50 | { "mode", "set removal mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = MODE_BLUR}, 0, NB_MODES - 1, FLAGS, .unit = "mode" }, | ||
| 51 | { "cover", "cover area with bitmap", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_COVER}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" }, | ||
| 52 | { "blur", "blur area", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_BLUR}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" }, | ||
| 53 | { NULL } | ||
| 54 | }; | ||
| 55 | |||
| 56 | AVFILTER_DEFINE_CLASS(cover_rect); | ||
| 57 | |||
| 58 | ✗ | static int config_input(AVFilterLink *inlink) | |
| 59 | { | ||
| 60 | ✗ | return 0; | |
| 61 | } | ||
| 62 | |||
| 63 | ✗ | static void cover_rect(CoverContext *cover, AVFrame *in, int offx, int offy) | |
| 64 | { | ||
| 65 | int x, y, p; | ||
| 66 | |||
| 67 | ✗ | for (p = 0; p < 3; p++) { | |
| 68 | ✗ | uint8_t *data = in->data[p] + (offx>>!!p) + (offy>>!!p) * in->linesize[p]; | |
| 69 | ✗ | const uint8_t *src = cover->cover_frame->data[p]; | |
| 70 | ✗ | int w = AV_CEIL_RSHIFT(cover->cover_frame->width , !!p); | |
| 71 | ✗ | int h = AV_CEIL_RSHIFT(cover->cover_frame->height, !!p); | |
| 72 | ✗ | for (y = 0; y < h; y++) { | |
| 73 | ✗ | for (x = 0; x < w; x++) { | |
| 74 | ✗ | data[x] = src[x]; | |
| 75 | } | ||
| 76 | ✗ | data += in->linesize[p]; | |
| 77 | ✗ | src += cover->cover_frame->linesize[p]; | |
| 78 | } | ||
| 79 | } | ||
| 80 | ✗ | } | |
| 81 | ✗ | static void blur(CoverContext *cover, AVFrame *in, int offx, int offy) | |
| 82 | { | ||
| 83 | int x, y, p; | ||
| 84 | |||
| 85 | ✗ | for (p=0; p<3; p++) { | |
| 86 | ✗ | int ox = offx>>!!p; | |
| 87 | ✗ | int oy = offy>>!!p; | |
| 88 | ✗ | int stride = in->linesize[p]; | |
| 89 | ✗ | uint8_t *data = in->data[p] + ox + oy * stride; | |
| 90 | ✗ | int w = AV_CEIL_RSHIFT(cover->width , !!p); | |
| 91 | ✗ | int h = AV_CEIL_RSHIFT(cover->height, !!p); | |
| 92 | ✗ | int iw = AV_CEIL_RSHIFT(in->width , !!p); | |
| 93 | ✗ | int ih = AV_CEIL_RSHIFT(in->height, !!p); | |
| 94 | ✗ | for (y = 0; y < h; y++) { | |
| 95 | ✗ | for (x = 0; x < w; x++) { | |
| 96 | ✗ | int c = 0; | |
| 97 | ✗ | int s = 0; | |
| 98 | ✗ | if (ox) { | |
| 99 | ✗ | int scale = 65536 / (x + 1); | |
| 100 | ✗ | s += data[-1 + y*stride] * scale; | |
| 101 | ✗ | c += scale; | |
| 102 | } | ||
| 103 | ✗ | if (oy) { | |
| 104 | ✗ | int scale = 65536 / (y + 1); | |
| 105 | ✗ | s += data[x - stride] * scale; | |
| 106 | ✗ | c += scale; | |
| 107 | } | ||
| 108 | ✗ | if (ox + w < iw) { | |
| 109 | ✗ | int scale = 65536 / (w - x); | |
| 110 | ✗ | s += data[w + y*stride] * scale; | |
| 111 | ✗ | c += scale; | |
| 112 | } | ||
| 113 | ✗ | if (oy + h < ih) { | |
| 114 | ✗ | int scale = 65536 / (h - y); | |
| 115 | ✗ | s += data[x + h*stride] * scale; | |
| 116 | ✗ | c += scale; | |
| 117 | } | ||
| 118 | ✗ | data[x + y*stride] = c ? (s + (c>>1)) / c : 0; | |
| 119 | } | ||
| 120 | } | ||
| 121 | } | ||
| 122 | ✗ | } | |
| 123 | |||
| 124 | ✗ | static int filter_frame(AVFilterLink *inlink, AVFrame *in) | |
| 125 | { | ||
| 126 | ✗ | AVFilterContext *ctx = inlink->dst; | |
| 127 | ✗ | CoverContext *cover = ctx->priv; | |
| 128 | AVDictionaryEntry *ex, *ey, *ew, *eh; | ||
| 129 | ✗ | int ret, x = -1, y = -1, w = -1, h = -1; | |
| 130 | ✗ | char *xendptr = NULL, *yendptr = NULL, *wendptr = NULL, *hendptr = NULL; | |
| 131 | |||
| 132 | ✗ | ex = av_dict_get(in->metadata, "lavfi.rect.x", NULL, AV_DICT_MATCH_CASE); | |
| 133 | ✗ | ey = av_dict_get(in->metadata, "lavfi.rect.y", NULL, AV_DICT_MATCH_CASE); | |
| 134 | ✗ | ew = av_dict_get(in->metadata, "lavfi.rect.w", NULL, AV_DICT_MATCH_CASE); | |
| 135 | ✗ | eh = av_dict_get(in->metadata, "lavfi.rect.h", NULL, AV_DICT_MATCH_CASE); | |
| 136 | ✗ | if (ex && ey && ew && eh) { | |
| 137 | ✗ | x = strtol(ex->value, &xendptr, 10); | |
| 138 | ✗ | y = strtol(ey->value, ¥dptr, 10); | |
| 139 | ✗ | w = strtol(ew->value, &wendptr, 10); | |
| 140 | ✗ | h = strtol(eh->value, &hendptr, 10); | |
| 141 | } | ||
| 142 | |||
| 143 | ✗ | if (!xendptr || *xendptr || !yendptr || *yendptr || | |
| 144 | ✗ | !wendptr || *wendptr || !hendptr || *hendptr | |
| 145 | ) { | ||
| 146 | ✗ | return ff_filter_frame(ctx->outputs[0], in); | |
| 147 | } | ||
| 148 | |||
| 149 | ✗ | if (x < 0) { | |
| 150 | ✗ | w += x; | |
| 151 | ✗ | x = 0; | |
| 152 | } | ||
| 153 | ✗ | if (y < 0) { | |
| 154 | ✗ | h += y; | |
| 155 | ✗ | y = 0; | |
| 156 | } | ||
| 157 | ✗ | w = FFMIN(w, in->width - x); | |
| 158 | ✗ | h = FFMIN(h, in->height - y); | |
| 159 | |||
| 160 | ✗ | if (w > in->width || h > in->height || w <= 0 || h <= 0) | |
| 161 | ✗ | return AVERROR(EINVAL); | |
| 162 | |||
| 163 | ✗ | if (cover->cover_frame) { | |
| 164 | ✗ | if (w != cover->cover_frame->width || h != cover->cover_frame->height) | |
| 165 | ✗ | return AVERROR(EINVAL); | |
| 166 | } | ||
| 167 | |||
| 168 | ✗ | cover->width = w; | |
| 169 | ✗ | cover->height = h; | |
| 170 | |||
| 171 | ✗ | x = av_clip(x, 0, in->width - w); | |
| 172 | ✗ | y = av_clip(y, 0, in->height - h); | |
| 173 | |||
| 174 | ✗ | ret = ff_inlink_make_frame_writable(inlink, &in); | |
| 175 | ✗ | if (ret < 0) { | |
| 176 | ✗ | av_frame_free(&in); | |
| 177 | ✗ | return ret; | |
| 178 | } | ||
| 179 | |||
| 180 | ✗ | if (cover->mode == MODE_BLUR) { | |
| 181 | ✗ | blur (cover, in, x, y); | |
| 182 | } else { | ||
| 183 | ✗ | cover_rect(cover, in, x, y); | |
| 184 | } | ||
| 185 | ✗ | return ff_filter_frame(ctx->outputs[0], in); | |
| 186 | } | ||
| 187 | |||
| 188 | ✗ | static av_cold void uninit(AVFilterContext *ctx) | |
| 189 | { | ||
| 190 | ✗ | CoverContext *cover = ctx->priv; | |
| 191 | |||
| 192 | ✗ | if (cover->cover_frame) | |
| 193 | ✗ | av_freep(&cover->cover_frame->data[0]); | |
| 194 | ✗ | av_frame_free(&cover->cover_frame); | |
| 195 | ✗ | } | |
| 196 | |||
| 197 | ✗ | static av_cold int init(AVFilterContext *ctx) | |
| 198 | { | ||
| 199 | ✗ | CoverContext *cover = ctx->priv; | |
| 200 | int ret; | ||
| 201 | |||
| 202 | ✗ | if (cover->mode == MODE_COVER) { | |
| 203 | ✗ | if (!cover->cover_filename) { | |
| 204 | ✗ | av_log(ctx, AV_LOG_ERROR, "cover filename not set\n"); | |
| 205 | ✗ | return AVERROR(EINVAL); | |
| 206 | } | ||
| 207 | |||
| 208 | ✗ | cover->cover_frame = av_frame_alloc(); | |
| 209 | ✗ | if (!cover->cover_frame) | |
| 210 | ✗ | return AVERROR(ENOMEM); | |
| 211 | |||
| 212 | ✗ | if ((ret = ff_load_image(cover->cover_frame->data, cover->cover_frame->linesize, | |
| 213 | ✗ | &cover->cover_frame->width, &cover->cover_frame->height, | |
| 214 | ✗ | &cover->cover_frame->format, cover->cover_filename, ctx)) < 0) | |
| 215 | ✗ | return ret; | |
| 216 | |||
| 217 | ✗ | if (cover->cover_frame->format != AV_PIX_FMT_YUV420P && cover->cover_frame->format != AV_PIX_FMT_YUVJ420P) { | |
| 218 | ✗ | av_log(ctx, AV_LOG_ERROR, "cover image is not a YUV420 image\n"); | |
| 219 | ✗ | return AVERROR(EINVAL); | |
| 220 | } | ||
| 221 | } | ||
| 222 | |||
| 223 | ✗ | return 0; | |
| 224 | } | ||
| 225 | |||
| 226 | static const AVFilterPad cover_rect_inputs[] = { | ||
| 227 | { | ||
| 228 | .name = "default", | ||
| 229 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 230 | .config_props = config_input, | ||
| 231 | .filter_frame = filter_frame, | ||
| 232 | }, | ||
| 233 | }; | ||
| 234 | |||
| 235 | const FFFilter ff_vf_cover_rect = { | ||
| 236 | .p.name = "cover_rect", | ||
| 237 | .p.description = NULL_IF_CONFIG_SMALL("Find and cover a user specified object."), | ||
| 238 | .p.priv_class = &cover_rect_class, | ||
| 239 | .priv_size = sizeof(CoverContext), | ||
| 240 | .init = init, | ||
| 241 | .uninit = uninit, | ||
| 242 | FILTER_INPUTS(cover_rect_inputs), | ||
| 243 | FILTER_OUTPUTS(ff_video_default_filterpad), | ||
| 244 | FILTER_PIXFMTS(AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P), | ||
| 245 | }; | ||
| 246 |