/* * Copyright (c) 2013 Paul B Mahol * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config_components.h" #include "libavutil/eval.h" #include "libavutil/mem.h" #include "libavutil/opt.h" #include "libavutil/pixfmt.h" #include "avfilter.h" #include "framesync.h" #include "internal.h" #include "vf_blend_init.h" #include "video.h" #include "blend.h" #define TOP 0 #define BOTTOM 1 typedef struct BlendContext { const AVClass *class; FFFrameSync fs; int hsub, vsub; ///< chroma subsampling values int nb_planes; char *all_expr; enum BlendMode all_mode; double all_opacity; int depth; FilterParams params[4]; int tblend; AVFrame *prev_frame; /* only used with tblend */ int nb_threads; } BlendContext; static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL }; enum { VAR_X, VAR_Y, VAR_W, VAR_H, VAR_SW, VAR_SH, VAR_T, VAR_N, VAR_A, VAR_B, VAR_TOP, VAR_BOTTOM, VAR_VARS_NB }; typedef struct ThreadData { const AVFrame *top, *bottom; AVFrame *dst; AVFilterLink *inlink; int plane; int w, h; FilterParams *param; } ThreadData; #define OFFSET(x) offsetof(BlendContext, x) #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM static const AVOption blend_options[] = { { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" }, { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" }, { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" }, { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" }, { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, .unit = "mode" }, { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, .unit = "mode" }, { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, .unit = "mode" }, { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, .unit = "mode" }, { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, .unit = "mode" }, { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, .unit = "mode" }, { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, .unit = "mode" }, { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, .unit = "mode" }, { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, .unit = "mode" }, { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, .unit = "mode" }, { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, .unit = "mode" }, { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, .unit = "mode" }, { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, .unit = "mode" }, { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, .unit = "mode" }, { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, .unit = "mode" }, { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, .unit = "mode" }, { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, .unit = "mode" }, { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, .unit = "mode" }, { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, .unit = "mode" }, { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, .unit = "mode" }, { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, .unit = "mode" }, { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, .unit = "mode" }, { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, .unit = "mode" }, { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, .unit = "mode" }, { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, .unit = "mode" }, { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, .unit = "mode" }, { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, .unit = "mode" }, { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, .unit = "mode" }, { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, .unit = "mode" }, { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, .unit = "mode" }, { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, .unit = "mode" }, { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, .unit = "mode" }, { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, .unit = "mode" }, { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, .unit = "mode" }, { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, .unit = "mode" }, { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, .unit = "mode" }, { "softdifference","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTDIFFERENCE}, 0, 0, FLAGS, .unit = "mode" }, { "geometric", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GEOMETRIC}, 0, 0, FLAGS, .unit = "mode" }, { "harmonic", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARMONIC}, 0, 0, FLAGS, .unit = "mode" }, { "bleach", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BLEACH}, 0, 0, FLAGS, .unit = "mode" }, { "stain", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_STAIN}, 0, 0, FLAGS, .unit = "mode" }, { "interpolate","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_INTERPOLATE},0, 0, FLAGS, .unit = "mode" }, { "hardoverlay","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDOVERLAY},0, 0, FLAGS, .unit = "mode" }, { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }, { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }, { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }, { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }, { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }, { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, { NULL } }; FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs); #define DEFINE_BLEND_EXPR(type, name, div) \ static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \ const uint8_t *_bottom, ptrdiff_t bottom_linesize, \ uint8_t *_dst, ptrdiff_t dst_linesize, \ ptrdiff_t width, ptrdiff_t height, \ FilterParams *param, SliceParams *sliceparam) \ { \ const type *top = (const type*)_top; \ const type *bottom = (const type*)_bottom; \ double *values = sliceparam->values; \ int starty = sliceparam->starty; \ type *dst = (type*)_dst; \ AVExpr *e = sliceparam->e; \ int y, x; \ dst_linesize /= div; \ top_linesize /= div; \ bottom_linesize /= div; \ \ for (y = 0; y < height; y++) { \ values[VAR_Y] = y + starty; \ for (x = 0; x < width; x++) { \ values[VAR_X] = x; \ values[VAR_TOP] = values[VAR_A] = top[x]; \ values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \ dst[x] = av_expr_eval(e, values, NULL); \ } \ dst += dst_linesize; \ top += top_linesize; \ bottom += bottom_linesize; \ } \ } DEFINE_BLEND_EXPR(uint8_t, 8bit, 1) DEFINE_BLEND_EXPR(uint16_t, 16bit, 2) DEFINE_BLEND_EXPR(float, 32bit, 4) static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) { ThreadData *td = arg; int slice_start = (td->h * jobnr ) / nb_jobs; int slice_end = (td->h * (jobnr+1)) / nb_jobs; int height = slice_end - slice_start; const uint8_t *top = td->top->data[td->plane]; const uint8_t *bottom = td->bottom->data[td->plane]; uint8_t *dst = td->dst->data[td->plane]; double values[VAR_VARS_NB]; SliceParams sliceparam = {.values = &values[0], .starty = slice_start, .e = td->param->e ? td->param->e[jobnr] : NULL}; values[VAR_N] = td->inlink->frame_count_out; values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base); values[VAR_W] = td->w; values[VAR_H] = td->h; values[VAR_SW] = td->w / (double)td->dst->width; values[VAR_SH] = td->h / (double)td->dst->height; td->param->blend(top + slice_start * td->top->linesize[td->plane], td->top->linesize[td->plane], bottom + slice_start * td->bottom->linesize[td->plane], td->bottom->linesize[td->plane], dst + slice_start * td->dst->linesize[td->plane], td->dst->linesize[td->plane], td->w, height, td->param, &sliceparam); return 0; } static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf) { BlendContext *s = ctx->priv; AVFilterLink *inlink = ctx->inputs[0]; AVFilterLink *outlink = ctx->outputs[0]; AVFrame *dst_buf; int plane; dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h); if (!dst_buf) return top_buf; if (av_frame_copy_props(dst_buf, top_buf) < 0) { av_frame_free(&dst_buf); return top_buf; } for (plane = 0; plane < s->nb_planes; plane++) { int hsub = plane == 1 || plane == 2 ? s->hsub : 0; int vsub = plane == 1 || plane == 2 ? s->vsub : 0; int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub); int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub); FilterParams *param = &s->params[plane]; ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf, .w = outw, .h = outh, .param = param, .plane = plane, .inlink = inlink }; ff_filter_execute(ctx, filter_slice, &td, NULL, FFMIN(outh, s->nb_threads)); } if (!s->tblend) av_frame_free(&top_buf); return dst_buf; } static int blend_frame_for_dualinput(FFFrameSync *fs) { AVFilterContext *ctx = fs->parent; AVFrame *top_buf, *bottom_buf, *dst_buf; int ret; ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf); if (ret < 0) return ret; if (!bottom_buf) return ff_filter_frame(ctx->outputs[0], top_buf); dst_buf = blend_frame(ctx, top_buf, bottom_buf); return ff_filter_frame(ctx->outputs[0], dst_buf); } static av_cold int init(AVFilterContext *ctx) { BlendContext *s = ctx->priv; s->tblend = !strcmp(ctx->filter->name, "tblend"); s->nb_threads = ff_filter_get_nb_threads(ctx); s->fs.on_event = blend_frame_for_dualinput; return 0; } static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8, AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GRAY9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GRAY10, AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GRAY12, AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_GBRP14, AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16, AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, AV_PIX_FMT_GRAYF32, AV_PIX_FMT_NONE }; static av_cold void uninit(AVFilterContext *ctx) { BlendContext *s = ctx->priv; int i; ff_framesync_uninit(&s->fs); av_frame_free(&s->prev_frame); for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++) { if (s->params[i].e) { for (int j = 0; j < s->nb_threads; j++) av_expr_free(s->params[i].e[j]); av_freep(&s->params[i].e); } } } static int config_params(AVFilterContext *ctx) { BlendContext *s = ctx->priv; int ret; for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) { FilterParams *param = &s->params[plane]; if (s->all_mode >= 0) param->mode = s->all_mode; if (s->all_opacity < 1) param->opacity = s->all_opacity; ff_blend_init(param, s->depth); if (s->all_expr && !param->expr_str) { param->expr_str = av_strdup(s->all_expr); if (!param->expr_str) return AVERROR(ENOMEM); } if (param->expr_str) { if (!param->e) { param->e = av_calloc(s->nb_threads, sizeof(*param->e)); if (!param->e) return AVERROR(ENOMEM); } for (int i = 0; i < s->nb_threads; i++) { av_expr_free(param->e[i]); param->e[i] = NULL; ret = av_expr_parse(¶m->e[i], param->expr_str, var_names, NULL, NULL, NULL, NULL, 0, ctx); if (ret < 0) return ret; } param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit; } } return 0; } static int config_output(AVFilterLink *outlink) { AVFilterContext *ctx = outlink->src; AVFilterLink *toplink = ctx->inputs[TOP]; BlendContext *s = ctx->priv; const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format); int ret; if (!s->tblend) { AVFilterLink *bottomlink = ctx->inputs[BOTTOM]; if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) { av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " "(size %dx%d) do not match the corresponding " "second input link %s parameters (size %dx%d)\n", ctx->input_pads[TOP].name, toplink->w, toplink->h, ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h); return AVERROR(EINVAL); } } outlink->w = toplink->w; outlink->h = toplink->h; outlink->time_base = toplink->time_base; outlink->sample_aspect_ratio = toplink->sample_aspect_ratio; outlink->frame_rate = toplink->frame_rate; s->hsub = pix_desc->log2_chroma_w; s->vsub = pix_desc->log2_chroma_h; s->depth = pix_desc->comp[0].depth; s->nb_planes = av_pix_fmt_count_planes(toplink->format); if (!s->tblend) if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0) return ret; ret = config_params(ctx); if (ret < 0) return ret; if (s->tblend) return 0; ret = ff_framesync_configure(&s->fs); outlink->time_base = s->fs.time_base; return ret; } static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags) { int ret; ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags); if (ret < 0) return ret; return config_params(ctx); } static const AVFilterPad blend_outputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .config_props = config_output, }, }; #if CONFIG_BLEND_FILTER static int activate(AVFilterContext *ctx) { BlendContext *s = ctx->priv; return ff_framesync_activate(&s->fs); } static const AVFilterPad blend_inputs[] = { { .name = "top", .type = AVMEDIA_TYPE_VIDEO, },{ .name = "bottom", .type = AVMEDIA_TYPE_VIDEO, }, }; const AVFilter ff_vf_blend = { .name = "blend", .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."), .preinit = blend_framesync_preinit, .init = init, .uninit = uninit, .priv_size = sizeof(BlendContext), .activate = activate, FILTER_INPUTS(blend_inputs), FILTER_OUTPUTS(blend_outputs), FILTER_PIXFMTS_ARRAY(pix_fmts), .priv_class = &blend_class, .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, .process_command = process_command, }; #endif #if CONFIG_TBLEND_FILTER static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame) { AVFilterContext *ctx = inlink->dst; BlendContext *s = ctx->priv; AVFilterLink *outlink = ctx->outputs[0]; if (s->prev_frame) { AVFrame *out; if (ctx->is_disabled) out = av_frame_clone(frame); else out = blend_frame(ctx, frame, s->prev_frame); av_frame_free(&s->prev_frame); s->prev_frame = frame; return ff_filter_frame(outlink, out); } s->prev_frame = frame; return 0; } AVFILTER_DEFINE_CLASS_EXT(tblend, "tblend", blend_options); static const AVFilterPad tblend_inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .filter_frame = tblend_filter_frame, }, }; const AVFilter ff_vf_tblend = { .name = "tblend", .description = NULL_IF_CONFIG_SMALL("Blend successive frames."), .priv_size = sizeof(BlendContext), .priv_class = &tblend_class, .init = init, .uninit = uninit, FILTER_INPUTS(tblend_inputs), FILTER_OUTPUTS(blend_outputs), FILTER_PIXFMTS_ARRAY(pix_fmts), .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, .process_command = process_command, }; #endif