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https://github.com/FFmpeg/FFmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
129 lines
4.4 KiB
C
129 lines
4.4 KiB
C
/*
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2011 Stefano Sabatini
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* Copyright (c) 2018 Danil Iashchenko
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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 "libavutil/mem.h"
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#include "boxblur.h"
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static const char *const var_names[] = {
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"w",
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"h",
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"cw",
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"ch",
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"hsub",
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"vsub",
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NULL
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};
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enum var_name {
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VAR_W,
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VAR_H,
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VAR_CW,
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VAR_CH,
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VAR_HSUB,
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VAR_VSUB,
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VARS_NB
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};
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int ff_boxblur_eval_filter_params(AVFilterLink *inlink,
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FilterParam *luma_param,
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FilterParam *chroma_param,
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FilterParam *alpha_param)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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AVFilterContext *ctx = inlink->dst;
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int w = inlink->w, h = inlink->h;
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int cw, ch;
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double var_values[VARS_NB], res;
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char *expr;
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int ret;
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if (!luma_param->radius_expr) {
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av_log(ctx, AV_LOG_ERROR, "Luma radius expression is not set.\n");
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return AVERROR(EINVAL);
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}
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/* fill missing params */
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if (!chroma_param->radius_expr) {
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chroma_param->radius_expr = av_strdup(luma_param->radius_expr);
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if (!chroma_param->radius_expr)
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return AVERROR(ENOMEM);
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}
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if (chroma_param->power < 0)
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chroma_param->power = luma_param->power;
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if (!alpha_param->radius_expr) {
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alpha_param->radius_expr = av_strdup(luma_param->radius_expr);
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if (!alpha_param->radius_expr)
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return AVERROR(ENOMEM);
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}
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if (alpha_param->power < 0)
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alpha_param->power = luma_param->power;
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var_values[VAR_W] = inlink->w;
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var_values[VAR_H] = inlink->h;
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var_values[VAR_CW] = cw = w>>(desc->log2_chroma_w);
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var_values[VAR_CH] = ch = h>>(desc->log2_chroma_h);
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var_values[VAR_HSUB] = 1<<(desc->log2_chroma_w);
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var_values[VAR_VSUB] = 1<<(desc->log2_chroma_h);
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#define EVAL_RADIUS_EXPR(comp) \
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expr = comp->radius_expr; \
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ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, \
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NULL, NULL, NULL, NULL, NULL, 0, ctx); \
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comp->radius = res; \
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if (ret < 0) { \
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av_log(ctx, AV_LOG_ERROR, \
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"Error when evaluating " #comp " radius expression '%s'\n", expr); \
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return ret; \
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}
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EVAL_RADIUS_EXPR(luma_param);
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EVAL_RADIUS_EXPR(chroma_param);
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EVAL_RADIUS_EXPR(alpha_param);
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av_log(ctx, AV_LOG_VERBOSE,
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"luma_radius:%d luma_power:%d "
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"chroma_radius:%d chroma_power:%d "
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"alpha_radius:%d alpha_power:%d "
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"w:%d chroma_w:%d h:%d chroma_h:%d\n",
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luma_param ->radius, luma_param ->power,
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chroma_param->radius, chroma_param->power,
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alpha_param ->radius, alpha_param ->power,
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w, cw, h, ch);
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#define CHECK_RADIUS_VAL(w_, h_, comp) \
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if (comp->radius < 0 || \
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2*comp->radius > FFMIN(w_, h_)) { \
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av_log(ctx, AV_LOG_ERROR, \
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"Invalid " #comp " radius value %d, must be >= 0 and <= %d\n", \
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comp->radius, FFMIN(w_, h_)/2); \
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return AVERROR(EINVAL); \
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}
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CHECK_RADIUS_VAL(w, h, luma_param);
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CHECK_RADIUS_VAL(cw, ch, chroma_param);
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CHECK_RADIUS_VAL(w, h, alpha_param);
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return 0;
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}
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