| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2011 Stefano Sabatini | ||
| 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 | /** | ||
| 22 | * @file | ||
| 23 | * filter for selecting which frame passes in the filterchain | ||
| 24 | */ | ||
| 25 | |||
| 26 | #include "config_components.h" | ||
| 27 | |||
| 28 | #include "libavutil/avstring.h" | ||
| 29 | #include "libavutil/eval.h" | ||
| 30 | #include "libavutil/fifo.h" | ||
| 31 | #include "libavutil/imgutils.h" | ||
| 32 | #include "libavutil/internal.h" | ||
| 33 | #include "libavutil/opt.h" | ||
| 34 | #include "libavutil/pixdesc.h" | ||
| 35 | #include "avfilter.h" | ||
| 36 | #include "audio.h" | ||
| 37 | #include "filters.h" | ||
| 38 | #include "formats.h" | ||
| 39 | #include "video.h" | ||
| 40 | #include "scene_sad.h" | ||
| 41 | |||
| 42 | static const char *const var_names[] = { | ||
| 43 | "TB", ///< timebase | ||
| 44 | |||
| 45 | "pts", ///< original pts in the file of the frame | ||
| 46 | "start_pts", ///< first PTS in the stream, expressed in TB units | ||
| 47 | "prev_pts", ///< previous frame PTS | ||
| 48 | "prev_selected_pts", ///< previous selected frame PTS | ||
| 49 | |||
| 50 | "t", ///< timestamp expressed in seconds | ||
| 51 | "start_t", ///< first PTS in the stream, expressed in seconds | ||
| 52 | "prev_t", ///< previous frame time | ||
| 53 | "prev_selected_t", ///< previously selected time | ||
| 54 | |||
| 55 | "pict_type", ///< the type of picture in the movie | ||
| 56 | "I", | ||
| 57 | "P", | ||
| 58 | "B", | ||
| 59 | "S", | ||
| 60 | "SI", | ||
| 61 | "SP", | ||
| 62 | "BI", | ||
| 63 | "PICT_TYPE_I", | ||
| 64 | "PICT_TYPE_P", | ||
| 65 | "PICT_TYPE_B", | ||
| 66 | "PICT_TYPE_S", | ||
| 67 | "PICT_TYPE_SI", | ||
| 68 | "PICT_TYPE_SP", | ||
| 69 | "PICT_TYPE_BI", | ||
| 70 | |||
| 71 | "interlace_type", ///< the frame interlace type | ||
| 72 | "PROGRESSIVE", | ||
| 73 | "TOPFIRST", | ||
| 74 | "BOTTOMFIRST", | ||
| 75 | |||
| 76 | "consumed_samples_n",///< number of samples consumed by the filter (only audio) | ||
| 77 | "samples_n", ///< number of samples in the current frame (only audio) | ||
| 78 | "sample_rate", ///< sample rate (only audio) | ||
| 79 | |||
| 80 | "n", ///< frame number (starting from zero) | ||
| 81 | "selected_n", ///< selected frame number (starting from zero) | ||
| 82 | "prev_selected_n", ///< number of the last selected frame | ||
| 83 | |||
| 84 | "key", ///< tell if the frame is a key frame | ||
| 85 | #if FF_API_FRAME_PKT | ||
| 86 | "pos", ///< original position in the file of the frame | ||
| 87 | #endif | ||
| 88 | |||
| 89 | "scene", | ||
| 90 | |||
| 91 | "concatdec_select", ///< frame is within the interval set by the concat demuxer | ||
| 92 | |||
| 93 | "ih", ///< ih: Represents the height of the input video frame. | ||
| 94 | "iw", ///< iw: Represents the width of the input video frame. | ||
| 95 | |||
| 96 | "view", | ||
| 97 | |||
| 98 | NULL | ||
| 99 | }; | ||
| 100 | |||
| 101 | enum var_name { | ||
| 102 | VAR_TB, | ||
| 103 | |||
| 104 | VAR_PTS, | ||
| 105 | VAR_START_PTS, | ||
| 106 | VAR_PREV_PTS, | ||
| 107 | VAR_PREV_SELECTED_PTS, | ||
| 108 | |||
| 109 | VAR_T, | ||
| 110 | VAR_START_T, | ||
| 111 | VAR_PREV_T, | ||
| 112 | VAR_PREV_SELECTED_T, | ||
| 113 | |||
| 114 | VAR_PICT_TYPE, | ||
| 115 | VAR_I, | ||
| 116 | VAR_P, | ||
| 117 | VAR_B, | ||
| 118 | VAR_S, | ||
| 119 | VAR_SI, | ||
| 120 | VAR_SP, | ||
| 121 | VAR_BI, | ||
| 122 | VAR_PICT_TYPE_I, | ||
| 123 | VAR_PICT_TYPE_P, | ||
| 124 | VAR_PICT_TYPE_B, | ||
| 125 | VAR_PICT_TYPE_S, | ||
| 126 | VAR_PICT_TYPE_SI, | ||
| 127 | VAR_PICT_TYPE_SP, | ||
| 128 | VAR_PICT_TYPE_BI, | ||
| 129 | |||
| 130 | VAR_INTERLACE_TYPE, | ||
| 131 | VAR_INTERLACE_TYPE_P, | ||
| 132 | VAR_INTERLACE_TYPE_T, | ||
| 133 | VAR_INTERLACE_TYPE_B, | ||
| 134 | |||
| 135 | VAR_CONSUMED_SAMPLES_N, | ||
| 136 | VAR_SAMPLES_N, | ||
| 137 | VAR_SAMPLE_RATE, | ||
| 138 | |||
| 139 | VAR_N, | ||
| 140 | VAR_SELECTED_N, | ||
| 141 | VAR_PREV_SELECTED_N, | ||
| 142 | |||
| 143 | VAR_KEY, | ||
| 144 | #if FF_API_FRAME_PKT | ||
| 145 | VAR_POS, | ||
| 146 | #endif | ||
| 147 | |||
| 148 | VAR_SCENE, | ||
| 149 | |||
| 150 | VAR_CONCATDEC_SELECT, | ||
| 151 | |||
| 152 | VAR_IH, | ||
| 153 | VAR_IW, | ||
| 154 | |||
| 155 | VAR_VIEW, | ||
| 156 | |||
| 157 | VAR_VARS_NB | ||
| 158 | }; | ||
| 159 | |||
| 160 | typedef struct SelectContext { | ||
| 161 | const AVClass *class; | ||
| 162 | char *expr_str; | ||
| 163 | AVExpr *expr; | ||
| 164 | double var_values[VAR_VARS_NB]; | ||
| 165 | int bitdepth; | ||
| 166 | int nb_planes; | ||
| 167 | ptrdiff_t width[4]; | ||
| 168 | ptrdiff_t height[4]; | ||
| 169 | int do_scene_detect; ///< 1 if the expression requires scene detection variables, 0 otherwise | ||
| 170 | ff_scene_sad_fn sad; ///< Sum of the absolute difference function (scene detect only) | ||
| 171 | double prev_mafd; ///< previous MAFD (scene detect only) | ||
| 172 | AVFrame *prev_picref; ///< previous frame (scene detect only) | ||
| 173 | double select; | ||
| 174 | int select_out; ///< mark the selected output pad index | ||
| 175 | int nb_outputs; | ||
| 176 | } SelectContext; | ||
| 177 | |||
| 178 | #define OFFSET(x) offsetof(SelectContext, x) | ||
| 179 | #define DEFINE_OPTIONS(filt_name, FLAGS) \ | ||
| 180 | static const AVOption filt_name##_options[] = { \ | ||
| 181 | { "expr", "set an expression to use for selecting frames", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "1" }, .flags=FLAGS }, \ | ||
| 182 | { "e", "set an expression to use for selecting frames", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "1" }, .flags=FLAGS }, \ | ||
| 183 | { "outputs", "set the number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, .flags=FLAGS }, \ | ||
| 184 | { "n", "set the number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, .flags=FLAGS }, \ | ||
| 185 | { NULL } \ | ||
| 186 | } | ||
| 187 | |||
| 188 | static int request_frame(AVFilterLink *outlink); | ||
| 189 | |||
| 190 | 5 | static av_cold int init(AVFilterContext *ctx) | |
| 191 | { | ||
| 192 | 5 | SelectContext *select = ctx->priv; | |
| 193 | int i, ret; | ||
| 194 | |||
| 195 |
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5 | if ((ret = av_expr_parse(&select->expr, select->expr_str, |
| 196 | var_names, NULL, NULL, NULL, NULL, 0, ctx)) < 0) { | ||
| 197 | ✗ | av_log(ctx, AV_LOG_ERROR, "Error while parsing expression '%s'\n", | |
| 198 | select->expr_str); | ||
| 199 | ✗ | return ret; | |
| 200 | } | ||
| 201 | 5 | select->do_scene_detect = !!strstr(select->expr_str, "scene"); | |
| 202 | |||
| 203 |
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10 | for (i = 0; i < select->nb_outputs; i++) { |
| 204 | 5 | AVFilterPad pad = { 0 }; | |
| 205 | |||
| 206 | 5 | pad.name = av_asprintf("output%d", i); | |
| 207 |
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5 | if (!pad.name) |
| 208 | ✗ | return AVERROR(ENOMEM); | |
| 209 | 5 | pad.type = ctx->filter->inputs[0].type; | |
| 210 | 5 | pad.request_frame = request_frame; | |
| 211 |
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5 | if ((ret = ff_append_outpad_free_name(ctx, &pad)) < 0) |
| 212 | ✗ | return ret; | |
| 213 | } | ||
| 214 | |||
| 215 | 5 | return 0; | |
| 216 | } | ||
| 217 | |||
| 218 | #define INTERLACE_TYPE_P 0 | ||
| 219 | #define INTERLACE_TYPE_T 1 | ||
| 220 | #define INTERLACE_TYPE_B 2 | ||
| 221 | |||
| 222 | 3 | static int config_input(AVFilterLink *inlink) | |
| 223 | { | ||
| 224 | 3 | SelectContext *select = inlink->dst->priv; | |
| 225 | 3 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); | |
| 226 | 9 | int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) && | |
| 227 |
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5 | (desc->flags & AV_PIX_FMT_FLAG_PLANAR) && |
| 228 |
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2 | desc->nb_components >= 3; |
| 229 | |||
| 230 | 3 | select->bitdepth = desc->comp[0].depth; | |
| 231 |
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3 | select->nb_planes = is_yuv ? 1 : av_pix_fmt_count_planes(inlink->format); |
| 232 | |||
| 233 |
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6 | for (int plane = 0; plane < select->nb_planes; plane++) { |
| 234 | 3 | ptrdiff_t line_size = av_image_get_linesize(inlink->format, inlink->w, plane); | |
| 235 | 3 | int vsub = desc->log2_chroma_h; | |
| 236 | |||
| 237 | 3 | select->width[plane] = line_size >> (select->bitdepth > 8); | |
| 238 |
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3 | select->height[plane] = plane == 1 || plane == 2 ? AV_CEIL_RSHIFT(inlink->h, vsub) : inlink->h; |
| 239 | } | ||
| 240 | |||
| 241 | 3 | select->var_values[VAR_N] = 0.0; | |
| 242 | 3 | select->var_values[VAR_SELECTED_N] = 0.0; | |
| 243 | |||
| 244 | 3 | select->var_values[VAR_TB] = av_q2d(inlink->time_base); | |
| 245 | |||
| 246 | 3 | select->var_values[VAR_PREV_SELECTED_N] = NAN; | |
| 247 | 3 | select->var_values[VAR_PREV_PTS] = NAN; | |
| 248 | 3 | select->var_values[VAR_PREV_SELECTED_PTS] = NAN; | |
| 249 | 3 | select->var_values[VAR_PREV_SELECTED_T] = NAN; | |
| 250 | 3 | select->var_values[VAR_PREV_T] = NAN; | |
| 251 | 3 | select->var_values[VAR_START_PTS] = NAN; | |
| 252 | 3 | select->var_values[VAR_START_T] = NAN; | |
| 253 | |||
| 254 | 3 | select->var_values[VAR_I] = AV_PICTURE_TYPE_I; | |
| 255 | 3 | select->var_values[VAR_P] = AV_PICTURE_TYPE_P; | |
| 256 | 3 | select->var_values[VAR_B] = AV_PICTURE_TYPE_B; | |
| 257 | 3 | select->var_values[VAR_SI] = AV_PICTURE_TYPE_SI; | |
| 258 | 3 | select->var_values[VAR_SP] = AV_PICTURE_TYPE_SP; | |
| 259 | 3 | select->var_values[VAR_BI] = AV_PICTURE_TYPE_BI; | |
| 260 | 3 | select->var_values[VAR_PICT_TYPE_I] = AV_PICTURE_TYPE_I; | |
| 261 | 3 | select->var_values[VAR_PICT_TYPE_P] = AV_PICTURE_TYPE_P; | |
| 262 | 3 | select->var_values[VAR_PICT_TYPE_B] = AV_PICTURE_TYPE_B; | |
| 263 | 3 | select->var_values[VAR_PICT_TYPE_SI] = AV_PICTURE_TYPE_SI; | |
| 264 | 3 | select->var_values[VAR_PICT_TYPE_SP] = AV_PICTURE_TYPE_SP; | |
| 265 | 3 | select->var_values[VAR_PICT_TYPE_BI] = AV_PICTURE_TYPE_BI; | |
| 266 | |||
| 267 | 3 | select->var_values[VAR_INTERLACE_TYPE_P] = INTERLACE_TYPE_P; | |
| 268 | 3 | select->var_values[VAR_INTERLACE_TYPE_T] = INTERLACE_TYPE_T; | |
| 269 | 3 | select->var_values[VAR_INTERLACE_TYPE_B] = INTERLACE_TYPE_B; | |
| 270 | |||
| 271 | 3 | select->var_values[VAR_PICT_TYPE] = NAN; | |
| 272 | 3 | select->var_values[VAR_INTERLACE_TYPE] = NAN; | |
| 273 | 3 | select->var_values[VAR_SCENE] = NAN; | |
| 274 | 3 | select->var_values[VAR_CONSUMED_SAMPLES_N] = NAN; | |
| 275 | 3 | select->var_values[VAR_SAMPLES_N] = NAN; | |
| 276 | |||
| 277 | 3 | select->var_values[VAR_IH] = NAN; | |
| 278 | 3 | select->var_values[VAR_IW] = NAN; | |
| 279 | |||
| 280 | 3 | select->var_values[VAR_SAMPLE_RATE] = | |
| 281 |
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3 | inlink->type == AVMEDIA_TYPE_AUDIO ? inlink->sample_rate : NAN; |
| 282 | |||
| 283 |
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3 | if (CONFIG_SELECT_FILTER && select->do_scene_detect) { |
| 284 |
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1 | select->sad = ff_scene_sad_get_fn(select->bitdepth == 8 ? 8 : 16); |
| 285 |
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1 | if (!select->sad) |
| 286 | ✗ | return AVERROR(EINVAL); | |
| 287 | } | ||
| 288 | 3 | return 0; | |
| 289 | } | ||
| 290 | |||
| 291 | 1308 | static double get_scene_score(AVFilterContext *ctx, AVFrame *frame) | |
| 292 | { | ||
| 293 | 1308 | double ret = 0; | |
| 294 | 1308 | SelectContext *select = ctx->priv; | |
| 295 | 1308 | AVFrame *prev_picref = select->prev_picref; | |
| 296 | |||
| 297 |
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1308 | if (prev_picref && |
| 298 |
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1307 | frame->height == prev_picref->height && |
| 299 |
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1307 | frame->width == prev_picref->width) { |
| 300 | 1307 | uint64_t sad = 0; | |
| 301 | double mafd, diff; | ||
| 302 | 1307 | uint64_t count = 0; | |
| 303 | |||
| 304 |
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2614 | for (int plane = 0; plane < select->nb_planes; plane++) { |
| 305 | uint64_t plane_sad; | ||
| 306 | 1307 | select->sad(prev_picref->data[plane], prev_picref->linesize[plane], | |
| 307 | 1307 | frame->data[plane], frame->linesize[plane], | |
| 308 | select->width[plane], select->height[plane], &plane_sad); | ||
| 309 | 1307 | sad += plane_sad; | |
| 310 | 1307 | count += select->width[plane] * select->height[plane]; | |
| 311 | } | ||
| 312 | |||
| 313 | 1307 | mafd = (double)sad / count / (1ULL << (select->bitdepth - 8)); | |
| 314 | 1307 | diff = fabs(mafd - select->prev_mafd); | |
| 315 |
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1307 | ret = av_clipf(FFMIN(mafd, diff) / 100., 0, 1); |
| 316 | 1307 | select->prev_mafd = mafd; | |
| 317 | 1307 | av_frame_free(&prev_picref); | |
| 318 | } | ||
| 319 | 1308 | select->prev_picref = av_frame_clone(frame); | |
| 320 | 1308 | return ret; | |
| 321 | } | ||
| 322 | |||
| 323 | 1408 | static double get_concatdec_select(AVFrame *frame, int64_t pts) | |
| 324 | { | ||
| 325 | 1408 | AVDictionary *metadata = frame->metadata; | |
| 326 | 1408 | AVDictionaryEntry *start_time_entry = av_dict_get(metadata, "lavf.concatdec.start_time", NULL, 0); | |
| 327 | 1408 | AVDictionaryEntry *duration_entry = av_dict_get(metadata, "lavf.concatdec.duration", NULL, 0); | |
| 328 |
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1408 | if (start_time_entry) { |
| 329 | ✗ | int64_t start_time = strtoll(start_time_entry->value, NULL, 10); | |
| 330 | ✗ | if (pts >= start_time) { | |
| 331 | ✗ | if (duration_entry) { | |
| 332 | ✗ | int64_t duration = strtoll(duration_entry->value, NULL, 10); | |
| 333 | ✗ | if (pts < start_time + duration) | |
| 334 | ✗ | return -1; | |
| 335 | else | ||
| 336 | ✗ | return 0; | |
| 337 | } | ||
| 338 | ✗ | return -1; | |
| 339 | } | ||
| 340 | ✗ | return 0; | |
| 341 | } | ||
| 342 | 1408 | return NAN; | |
| 343 | } | ||
| 344 | |||
| 345 | 1408 | static void select_frame(AVFilterContext *ctx, AVFrame *frame) | |
| 346 | { | ||
| 347 | 1408 | SelectContext *select = ctx->priv; | |
| 348 | 1408 | AVFilterLink *inlink = ctx->inputs[0]; | |
| 349 | 1408 | FilterLink *inl = ff_filter_link(inlink); | |
| 350 | const AVFrameSideData *sd; | ||
| 351 | double res; | ||
| 352 | |||
| 353 |
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1408 | if (isnan(select->var_values[VAR_START_PTS])) |
| 354 |
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3 | select->var_values[VAR_START_PTS] = TS2D(frame->pts); |
| 355 |
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1408 | if (isnan(select->var_values[VAR_START_T])) |
| 356 |
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3 | select->var_values[VAR_START_T] = TS2D(frame->pts) * av_q2d(inlink->time_base); |
| 357 | |||
| 358 | 1408 | select->var_values[VAR_N ] = inl->frame_count_out; | |
| 359 |
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1408 | select->var_values[VAR_PTS] = TS2D(frame->pts); |
| 360 |
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1408 | select->var_values[VAR_T ] = TS2D(frame->pts) * av_q2d(inlink->time_base); |
| 361 | #if FF_API_FRAME_PKT | ||
| 362 | FF_DISABLE_DEPRECATION_WARNINGS | ||
| 363 |
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1408 | select->var_values[VAR_POS] = frame->pkt_pos == -1 ? NAN : frame->pkt_pos; |
| 364 | FF_ENABLE_DEPRECATION_WARNINGS | ||
| 365 | #endif | ||
| 366 |
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1408 | select->var_values[VAR_KEY] = !!(frame->flags & AV_FRAME_FLAG_KEY); |
| 367 | 1408 | select->var_values[VAR_CONCATDEC_SELECT] = get_concatdec_select(frame, av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q)); | |
| 368 | |||
| 369 |
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1408 | switch (inlink->type) { |
| 370 | ✗ | case AVMEDIA_TYPE_AUDIO: | |
| 371 | ✗ | select->var_values[VAR_SAMPLES_N] = frame->nb_samples; | |
| 372 | ✗ | break; | |
| 373 | |||
| 374 | 1408 | case AVMEDIA_TYPE_VIDEO: | |
| 375 | 1408 | select->var_values[VAR_IH] = frame->height; | |
| 376 | 1408 | select->var_values[VAR_IW] = frame->width; | |
| 377 | |||
| 378 | 1408 | select->var_values[VAR_INTERLACE_TYPE] = | |
| 379 |
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1408 | !(frame->flags & AV_FRAME_FLAG_INTERLACED) ? INTERLACE_TYPE_P : |
| 380 | ✗ | (frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) ? INTERLACE_TYPE_T : INTERLACE_TYPE_B; | |
| 381 | 1408 | select->var_values[VAR_PICT_TYPE] = frame->pict_type; | |
| 382 |
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1408 | if (select->do_scene_detect) { |
| 383 | char buf[32]; | ||
| 384 | 1308 | select->var_values[VAR_SCENE] = get_scene_score(ctx, frame); | |
| 385 | // TODO: document metadata | ||
| 386 | 1308 | snprintf(buf, sizeof(buf), "%f", select->var_values[VAR_SCENE]); | |
| 387 | 1308 | av_dict_set(&frame->metadata, "lavfi.scene_score", buf, 0); | |
| 388 | } | ||
| 389 | |||
| 390 | 1408 | sd = av_frame_side_data_get(frame->side_data, frame->nb_side_data, | |
| 391 | AV_FRAME_DATA_VIEW_ID); | ||
| 392 |
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1408 | select->var_values[VAR_VIEW] = sd ? *(int*)sd->data : NAN; |
| 393 | 1408 | break; | |
| 394 | } | ||
| 395 | |||
| 396 | 1408 | select->select = res = av_expr_eval(select->expr, select->var_values, NULL); | |
| 397 | 1408 | av_log(inlink->dst, AV_LOG_DEBUG, | |
| 398 | "n:%f pts:%f t:%f key:%d", | ||
| 399 | select->var_values[VAR_N], | ||
| 400 | select->var_values[VAR_PTS], | ||
| 401 | select->var_values[VAR_T], | ||
| 402 | 1408 | !!(frame->flags & AV_FRAME_FLAG_KEY)); | |
| 403 | |||
| 404 |
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1408 | switch (inlink->type) { |
| 405 | 1408 | case AVMEDIA_TYPE_VIDEO: | |
| 406 | 1408 | av_log(inlink->dst, AV_LOG_DEBUG, " interlace_type:%c pict_type:%c scene:%f", | |
| 407 |
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1408 | !(frame->flags & AV_FRAME_FLAG_INTERLACED) ? 'P' : |
| 408 | ✗ | (frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) ? 'T' : 'B', | |
| 409 | 1408 | av_get_picture_type_char(frame->pict_type), | |
| 410 | select->var_values[VAR_SCENE]); | ||
| 411 | 1408 | break; | |
| 412 | ✗ | case AVMEDIA_TYPE_AUDIO: | |
| 413 | ✗ | av_log(inlink->dst, AV_LOG_DEBUG, " samples_n:%d consumed_samples_n:%f", | |
| 414 | frame->nb_samples, | ||
| 415 | select->var_values[VAR_CONSUMED_SAMPLES_N]); | ||
| 416 | ✗ | break; | |
| 417 | } | ||
| 418 | |||
| 419 |
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1408 | if (res == 0) { |
| 420 | 1355 | select->select_out = -1; /* drop */ | |
| 421 |
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53 | } else if (isnan(res) || res < 0) { |
| 422 | ✗ | select->select_out = 0; /* first output */ | |
| 423 | } else { | ||
| 424 |
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53 | select->select_out = FFMIN(ceilf(res)-1, select->nb_outputs-1); /* other outputs */ |
| 425 | } | ||
| 426 | |||
| 427 | 1408 | av_log(inlink->dst, AV_LOG_DEBUG, " -> select:%f select_out:%d\n", res, select->select_out); | |
| 428 | |||
| 429 |
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1408 | if (res) { |
| 430 | 53 | select->var_values[VAR_PREV_SELECTED_N] = select->var_values[VAR_N]; | |
| 431 | 53 | select->var_values[VAR_PREV_SELECTED_PTS] = select->var_values[VAR_PTS]; | |
| 432 | 53 | select->var_values[VAR_PREV_SELECTED_T] = select->var_values[VAR_T]; | |
| 433 | 53 | select->var_values[VAR_SELECTED_N] += 1.0; | |
| 434 |
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53 | if (inlink->type == AVMEDIA_TYPE_AUDIO) |
| 435 | ✗ | select->var_values[VAR_CONSUMED_SAMPLES_N] += frame->nb_samples; | |
| 436 | } | ||
| 437 | |||
| 438 | 1408 | select->var_values[VAR_PREV_PTS] = select->var_values[VAR_PTS]; | |
| 439 | 1408 | select->var_values[VAR_PREV_T] = select->var_values[VAR_T]; | |
| 440 | 1408 | } | |
| 441 | |||
| 442 | 1408 | static int filter_frame(AVFilterLink *inlink, AVFrame *frame) | |
| 443 | { | ||
| 444 | 1408 | AVFilterContext *ctx = inlink->dst; | |
| 445 | 1408 | SelectContext *select = ctx->priv; | |
| 446 | |||
| 447 | 1408 | select_frame(ctx, frame); | |
| 448 |
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1408 | if (select->select) |
| 449 | 53 | return ff_filter_frame(ctx->outputs[select->select_out], frame); | |
| 450 | |||
| 451 | 1355 | av_frame_free(&frame); | |
| 452 | 1355 | return 0; | |
| 453 | } | ||
| 454 | |||
| 455 | 1412 | static int request_frame(AVFilterLink *outlink) | |
| 456 | { | ||
| 457 | 1412 | AVFilterLink *inlink = outlink->src->inputs[0]; | |
| 458 | 1412 | int ret = ff_request_frame(inlink); | |
| 459 | 1412 | return ret; | |
| 460 | } | ||
| 461 | |||
| 462 | 5 | static av_cold void uninit(AVFilterContext *ctx) | |
| 463 | { | ||
| 464 | 5 | SelectContext *select = ctx->priv; | |
| 465 | |||
| 466 | 5 | av_expr_free(select->expr); | |
| 467 | 5 | select->expr = NULL; | |
| 468 | |||
| 469 |
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5 | if (select->do_scene_detect) { |
| 470 | 1 | av_frame_free(&select->prev_picref); | |
| 471 | } | ||
| 472 | 5 | } | |
| 473 | |||
| 474 | #if CONFIG_ASELECT_FILTER | ||
| 475 | |||
| 476 | DEFINE_OPTIONS(aselect, AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM); | ||
| 477 | AVFILTER_DEFINE_CLASS(aselect); | ||
| 478 | |||
| 479 | ✗ | static av_cold int aselect_init(AVFilterContext *ctx) | |
| 480 | { | ||
| 481 | ✗ | SelectContext *select = ctx->priv; | |
| 482 | int ret; | ||
| 483 | |||
| 484 | ✗ | if ((ret = init(ctx)) < 0) | |
| 485 | ✗ | return ret; | |
| 486 | |||
| 487 | ✗ | if (select->do_scene_detect) { | |
| 488 | ✗ | av_log(ctx, AV_LOG_ERROR, "Scene detection is ignored in aselect filter\n"); | |
| 489 | ✗ | return AVERROR(EINVAL); | |
| 490 | } | ||
| 491 | |||
| 492 | ✗ | return 0; | |
| 493 | } | ||
| 494 | |||
| 495 | static const AVFilterPad avfilter_af_aselect_inputs[] = { | ||
| 496 | { | ||
| 497 | .name = "default", | ||
| 498 | .type = AVMEDIA_TYPE_AUDIO, | ||
| 499 | .config_props = config_input, | ||
| 500 | .filter_frame = filter_frame, | ||
| 501 | }, | ||
| 502 | }; | ||
| 503 | |||
| 504 | const AVFilter ff_af_aselect = { | ||
| 505 | .name = "aselect", | ||
| 506 | .description = NULL_IF_CONFIG_SMALL("Select audio frames to pass in output."), | ||
| 507 | .init = aselect_init, | ||
| 508 | .uninit = uninit, | ||
| 509 | .priv_size = sizeof(SelectContext), | ||
| 510 | FILTER_INPUTS(avfilter_af_aselect_inputs), | ||
| 511 | .priv_class = &aselect_class, | ||
| 512 | .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, | ||
| 513 | }; | ||
| 514 | #endif /* CONFIG_ASELECT_FILTER */ | ||
| 515 | |||
| 516 | #if CONFIG_SELECT_FILTER | ||
| 517 | |||
| 518 | 3 | static int query_formats(const AVFilterContext *ctx, | |
| 519 | AVFilterFormatsConfig **cfg_in, | ||
| 520 | AVFilterFormatsConfig **cfg_out) | ||
| 521 | { | ||
| 522 | 3 | const SelectContext *select = ctx->priv; | |
| 523 | |||
| 524 |
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3 | if (select->do_scene_detect) { |
| 525 | static const enum AVPixelFormat pix_fmts[] = { | ||
| 526 | AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, AV_PIX_FMT_RGBA, | ||
| 527 | AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, AV_PIX_FMT_GRAY8, | ||
| 528 | AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P, | ||
| 529 | AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P, | ||
| 530 | AV_PIX_FMT_YUV420P10, | ||
| 531 | AV_PIX_FMT_NONE | ||
| 532 | }; | ||
| 533 | 1 | return ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out, pix_fmts); | |
| 534 | } | ||
| 535 | 2 | return 0; | |
| 536 | } | ||
| 537 | |||
| 538 | DEFINE_OPTIONS(select, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM); | ||
| 539 | AVFILTER_DEFINE_CLASS(select); | ||
| 540 | |||
| 541 | 5 | static av_cold int select_init(AVFilterContext *ctx) | |
| 542 | { | ||
| 543 | int ret; | ||
| 544 | |||
| 545 |
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5 | if ((ret = init(ctx)) < 0) |
| 546 | ✗ | return ret; | |
| 547 | |||
| 548 | 5 | return 0; | |
| 549 | } | ||
| 550 | |||
| 551 | static const AVFilterPad avfilter_vf_select_inputs[] = { | ||
| 552 | { | ||
| 553 | .name = "default", | ||
| 554 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 555 | .config_props = config_input, | ||
| 556 | .filter_frame = filter_frame, | ||
| 557 | }, | ||
| 558 | }; | ||
| 559 | |||
| 560 | const AVFilter ff_vf_select = { | ||
| 561 | .name = "select", | ||
| 562 | .description = NULL_IF_CONFIG_SMALL("Select video frames to pass in output."), | ||
| 563 | .init = select_init, | ||
| 564 | .uninit = uninit, | ||
| 565 | .priv_size = sizeof(SelectContext), | ||
| 566 | .priv_class = &select_class, | ||
| 567 | FILTER_INPUTS(avfilter_vf_select_inputs), | ||
| 568 | FILTER_QUERY_FUNC2(query_formats), | ||
| 569 | .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS | AVFILTER_FLAG_METADATA_ONLY, | ||
| 570 | }; | ||
| 571 | #endif /* CONFIG_SELECT_FILTER */ | ||
| 572 |