| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 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. | ||
| 8 | * | ||
| 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. | ||
| 13 | * | ||
| 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 | ||
| 17 | */ | ||
| 18 | |||
| 19 | #include "libavutil/avassert.h" | ||
| 20 | #include "libavutil/eval.h" | ||
| 21 | #include "libavutil/opt.h" | ||
| 22 | #include "avfilter.h" | ||
| 23 | #include "filters.h" | ||
| 24 | #include "video.h" | ||
| 25 | |||
| 26 | enum { | ||
| 27 | X, Y, W, H, | ||
| 28 | NB_PARAMS, | ||
| 29 | }; | ||
| 30 | static const char addroi_param_names[] = { | ||
| 31 | 'x', 'y', 'w', 'h', | ||
| 32 | }; | ||
| 33 | |||
| 34 | enum { | ||
| 35 | VAR_IW, | ||
| 36 | VAR_IH, | ||
| 37 | NB_VARS, | ||
| 38 | }; | ||
| 39 | static const char *const addroi_var_names[] = { | ||
| 40 | "iw", | ||
| 41 | "ih", | ||
| 42 | NULL, | ||
| 43 | }; | ||
| 44 | |||
| 45 | typedef struct AddROIContext { | ||
| 46 | const AVClass *class; | ||
| 47 | |||
| 48 | char *region_str[NB_PARAMS]; | ||
| 49 | AVExpr *region_expr[NB_PARAMS]; | ||
| 50 | |||
| 51 | int region[NB_PARAMS]; | ||
| 52 | AVRational qoffset; | ||
| 53 | |||
| 54 | int clear; | ||
| 55 | } AddROIContext; | ||
| 56 | |||
| 57 | ✗ | static int addroi_config_input(AVFilterLink *inlink) | |
| 58 | { | ||
| 59 | ✗ | AVFilterContext *avctx = inlink->dst; | |
| 60 | ✗ | AddROIContext *ctx = avctx->priv; | |
| 61 | int i; | ||
| 62 | double vars[NB_VARS]; | ||
| 63 | double val; | ||
| 64 | |||
| 65 | ✗ | vars[VAR_IW] = inlink->w; | |
| 66 | ✗ | vars[VAR_IH] = inlink->h; | |
| 67 | |||
| 68 | ✗ | for (i = 0; i < NB_PARAMS; i++) { | |
| 69 | int max_value; | ||
| 70 | ✗ | switch (i) { | |
| 71 | ✗ | case X: max_value = inlink->w; break; | |
| 72 | ✗ | case Y: max_value = inlink->h; break; | |
| 73 | ✗ | case W: max_value = inlink->w - ctx->region[X]; break; | |
| 74 | ✗ | case H: max_value = inlink->h - ctx->region[Y]; break; | |
| 75 | } | ||
| 76 | |||
| 77 | ✗ | val = av_expr_eval(ctx->region_expr[i], vars, NULL); | |
| 78 | ✗ | if (val < 0.0) { | |
| 79 | ✗ | av_log(avctx, AV_LOG_WARNING, "Calculated value %g for %c is " | |
| 80 | "less than zero - using zero instead.\n", val, | ||
| 81 | ✗ | addroi_param_names[i]); | |
| 82 | ✗ | val = 0.0; | |
| 83 | ✗ | } else if (val > max_value) { | |
| 84 | ✗ | av_log(avctx, AV_LOG_WARNING, "Calculated value %g for %c is " | |
| 85 | "greater than maximum allowed value %d - " | ||
| 86 | ✗ | "using %d instead.\n", val, addroi_param_names[i], | |
| 87 | max_value, max_value); | ||
| 88 | ✗ | val = max_value; | |
| 89 | } | ||
| 90 | ✗ | ctx->region[i] = val; | |
| 91 | } | ||
| 92 | |||
| 93 | ✗ | return 0; | |
| 94 | } | ||
| 95 | |||
| 96 | ✗ | static int addroi_filter_frame(AVFilterLink *inlink, AVFrame *frame) | |
| 97 | { | ||
| 98 | ✗ | AVFilterContext *avctx = inlink->dst; | |
| 99 | ✗ | AVFilterLink *outlink = avctx->outputs[0]; | |
| 100 | ✗ | AddROIContext *ctx = avctx->priv; | |
| 101 | AVRegionOfInterest *roi; | ||
| 102 | AVFrameSideData *sd; | ||
| 103 | int err; | ||
| 104 | |||
| 105 | ✗ | if (ctx->clear) { | |
| 106 | ✗ | av_frame_remove_side_data(frame, AV_FRAME_DATA_REGIONS_OF_INTEREST); | |
| 107 | ✗ | sd = NULL; | |
| 108 | } else { | ||
| 109 | ✗ | sd = av_frame_get_side_data(frame, AV_FRAME_DATA_REGIONS_OF_INTEREST); | |
| 110 | } | ||
| 111 | ✗ | if (sd) { | |
| 112 | const AVRegionOfInterest *old_roi; | ||
| 113 | uint32_t old_roi_size; | ||
| 114 | AVBufferRef *roi_ref; | ||
| 115 | int nb_roi, i; | ||
| 116 | |||
| 117 | ✗ | old_roi = (const AVRegionOfInterest*)sd->data; | |
| 118 | ✗ | old_roi_size = old_roi->self_size; | |
| 119 | ✗ | av_assert0(old_roi_size && sd->size % old_roi_size == 0); | |
| 120 | ✗ | nb_roi = sd->size / old_roi_size + 1; | |
| 121 | |||
| 122 | ✗ | roi_ref = av_buffer_alloc(sizeof(*roi) * nb_roi); | |
| 123 | ✗ | if (!roi_ref) { | |
| 124 | ✗ | err = AVERROR(ENOMEM); | |
| 125 | ✗ | goto fail; | |
| 126 | } | ||
| 127 | ✗ | roi = (AVRegionOfInterest*)roi_ref->data; | |
| 128 | |||
| 129 | ✗ | for (i = 0; i < nb_roi - 1; i++) { | |
| 130 | ✗ | old_roi = (const AVRegionOfInterest*) | |
| 131 | ✗ | (sd->data + old_roi_size * i); | |
| 132 | |||
| 133 | ✗ | roi[i] = (AVRegionOfInterest) { | |
| 134 | .self_size = sizeof(*roi), | ||
| 135 | ✗ | .top = old_roi->top, | |
| 136 | ✗ | .bottom = old_roi->bottom, | |
| 137 | ✗ | .left = old_roi->left, | |
| 138 | ✗ | .right = old_roi->right, | |
| 139 | ✗ | .qoffset = old_roi->qoffset, | |
| 140 | }; | ||
| 141 | } | ||
| 142 | |||
| 143 | ✗ | roi[nb_roi - 1] = (AVRegionOfInterest) { | |
| 144 | .self_size = sizeof(*roi), | ||
| 145 | ✗ | .top = ctx->region[Y], | |
| 146 | ✗ | .bottom = ctx->region[Y] + ctx->region[H], | |
| 147 | ✗ | .left = ctx->region[X], | |
| 148 | ✗ | .right = ctx->region[X] + ctx->region[W], | |
| 149 | ✗ | .qoffset = ctx->qoffset, | |
| 150 | }; | ||
| 151 | |||
| 152 | ✗ | av_frame_remove_side_data(frame, AV_FRAME_DATA_REGIONS_OF_INTEREST); | |
| 153 | |||
| 154 | ✗ | sd = av_frame_new_side_data_from_buf(frame, | |
| 155 | AV_FRAME_DATA_REGIONS_OF_INTEREST, | ||
| 156 | roi_ref); | ||
| 157 | ✗ | if (!sd) { | |
| 158 | ✗ | av_buffer_unref(&roi_ref); | |
| 159 | ✗ | err = AVERROR(ENOMEM); | |
| 160 | ✗ | goto fail; | |
| 161 | } | ||
| 162 | |||
| 163 | } else { | ||
| 164 | ✗ | sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REGIONS_OF_INTEREST, | |
| 165 | sizeof(AVRegionOfInterest)); | ||
| 166 | ✗ | if (!sd) { | |
| 167 | ✗ | err = AVERROR(ENOMEM); | |
| 168 | ✗ | goto fail; | |
| 169 | } | ||
| 170 | ✗ | roi = (AVRegionOfInterest*)sd->data; | |
| 171 | ✗ | *roi = (AVRegionOfInterest) { | |
| 172 | .self_size = sizeof(*roi), | ||
| 173 | ✗ | .top = ctx->region[Y], | |
| 174 | ✗ | .bottom = ctx->region[Y] + ctx->region[H], | |
| 175 | ✗ | .left = ctx->region[X], | |
| 176 | ✗ | .right = ctx->region[X] + ctx->region[W], | |
| 177 | ✗ | .qoffset = ctx->qoffset, | |
| 178 | }; | ||
| 179 | } | ||
| 180 | |||
| 181 | ✗ | return ff_filter_frame(outlink, frame); | |
| 182 | |||
| 183 | ✗ | fail: | |
| 184 | ✗ | av_frame_free(&frame); | |
| 185 | ✗ | return err; | |
| 186 | } | ||
| 187 | |||
| 188 | ✗ | static av_cold int addroi_init(AVFilterContext *avctx) | |
| 189 | { | ||
| 190 | ✗ | AddROIContext *ctx = avctx->priv; | |
| 191 | int i, err; | ||
| 192 | |||
| 193 | ✗ | for (i = 0; i < NB_PARAMS; i++) { | |
| 194 | ✗ | err = av_expr_parse(&ctx->region_expr[i], ctx->region_str[i], | |
| 195 | addroi_var_names, NULL, NULL, NULL, NULL, | ||
| 196 | 0, avctx); | ||
| 197 | ✗ | if (err < 0) { | |
| 198 | ✗ | av_log(ctx, AV_LOG_ERROR, | |
| 199 | "Error parsing %c expression '%s'.\n", | ||
| 200 | ✗ | addroi_param_names[i], ctx->region_str[i]); | |
| 201 | ✗ | return err; | |
| 202 | } | ||
| 203 | } | ||
| 204 | |||
| 205 | ✗ | return 0; | |
| 206 | } | ||
| 207 | |||
| 208 | ✗ | static av_cold void addroi_uninit(AVFilterContext *avctx) | |
| 209 | { | ||
| 210 | ✗ | AddROIContext *ctx = avctx->priv; | |
| 211 | int i; | ||
| 212 | |||
| 213 | ✗ | for (i = 0; i < NB_PARAMS; i++) { | |
| 214 | ✗ | av_expr_free(ctx->region_expr[i]); | |
| 215 | ✗ | ctx->region_expr[i] = NULL; | |
| 216 | } | ||
| 217 | ✗ | } | |
| 218 | |||
| 219 | #define OFFSET(x) offsetof(AddROIContext, x) | ||
| 220 | #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | ||
| 221 | static const AVOption addroi_options[] = { | ||
| 222 | { "x", "Region distance from left edge of frame.", | ||
| 223 | OFFSET(region_str[X]), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS }, | ||
| 224 | { "y", "Region distance from top edge of frame.", | ||
| 225 | OFFSET(region_str[Y]), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS }, | ||
| 226 | { "w", "Region width.", | ||
| 227 | OFFSET(region_str[W]), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS }, | ||
| 228 | { "h", "Region height.", | ||
| 229 | OFFSET(region_str[H]), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS }, | ||
| 230 | |||
| 231 | { "qoffset", "Quantisation offset to apply in the region.", | ||
| 232 | OFFSET(qoffset), AV_OPT_TYPE_RATIONAL, { .dbl = -0.1 }, -1, +1, FLAGS }, | ||
| 233 | |||
| 234 | { "clear", "Remove any existing regions of interest before adding the new one.", | ||
| 235 | OFFSET(clear), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, | ||
| 236 | |||
| 237 | { NULL } | ||
| 238 | }; | ||
| 239 | |||
| 240 | AVFILTER_DEFINE_CLASS(addroi); | ||
| 241 | |||
| 242 | static const AVFilterPad addroi_inputs[] = { | ||
| 243 | { | ||
| 244 | .name = "default", | ||
| 245 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 246 | .config_props = addroi_config_input, | ||
| 247 | .filter_frame = addroi_filter_frame, | ||
| 248 | }, | ||
| 249 | }; | ||
| 250 | |||
| 251 | const FFFilter ff_vf_addroi = { | ||
| 252 | .p.name = "addroi", | ||
| 253 | .p.description = NULL_IF_CONFIG_SMALL("Add region of interest to frame."), | ||
| 254 | .p.priv_class = &addroi_class, | ||
| 255 | .p.flags = AVFILTER_FLAG_METADATA_ONLY, | ||
| 256 | |||
| 257 | .init = addroi_init, | ||
| 258 | .uninit = addroi_uninit, | ||
| 259 | |||
| 260 | .priv_size = sizeof(AddROIContext), | ||
| 261 | |||
| 262 | FILTER_INPUTS(addroi_inputs), | ||
| 263 | FILTER_OUTPUTS(ff_video_default_filterpad), | ||
| 264 | }; | ||
| 265 |