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