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/* |
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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 "libavutil/imgutils.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/pixdesc.h" |
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#include "avfilter.h" |
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#include "drawutils.h" |
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#include "formats.h" |
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#include "internal.h" |
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#include "video.h" |
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#define R 0 |
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#define G 1 |
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#define B 2 |
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#define A 3 |
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typedef struct Range { |
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double in_min, in_max; |
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double out_min, out_max; |
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} Range; |
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typedef struct ColorLevelsContext { |
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const AVClass *class; |
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Range range[4]; |
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int nb_comp; |
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int bpp; |
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int step; |
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uint8_t rgba_map[4]; |
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int linesize; |
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} ColorLevelsContext; |
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#define OFFSET(x) offsetof(ColorLevelsContext, 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 colorlevels_options[] = { |
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{ "rimin", "set input red black point", OFFSET(range[R].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS }, |
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{ "gimin", "set input green black point", OFFSET(range[G].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS }, |
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{ "bimin", "set input blue black point", OFFSET(range[B].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS }, |
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{ "aimin", "set input alpha black point", OFFSET(range[A].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS }, |
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{ "rimax", "set input red white point", OFFSET(range[R].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS }, |
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{ "gimax", "set input green white point", OFFSET(range[G].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS }, |
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{ "bimax", "set input blue white point", OFFSET(range[B].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS }, |
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{ "aimax", "set input alpha white point", OFFSET(range[A].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS }, |
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{ "romin", "set output red black point", OFFSET(range[R].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS }, |
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{ "gomin", "set output green black point", OFFSET(range[G].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS }, |
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{ "bomin", "set output blue black point", OFFSET(range[B].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS }, |
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{ "aomin", "set output alpha black point", OFFSET(range[A].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS }, |
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{ "romax", "set output red white point", OFFSET(range[R].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, |
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{ "gomax", "set output green white point", OFFSET(range[G].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, |
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{ "bomax", "set output blue white point", OFFSET(range[B].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, |
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{ "aomax", "set output alpha white point", OFFSET(range[A].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS }, |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(colorlevels); |
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static int query_formats(AVFilterContext *ctx) |
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{ |
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static const enum AVPixelFormat pix_fmts[] = { |
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AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR, |
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AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, |
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AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0, |
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AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, |
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AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48, |
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AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64, |
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AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, |
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AV_PIX_FMT_NONE |
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}; |
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AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
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✗✓ |
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if (!fmts_list) |
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return AVERROR(ENOMEM); |
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return ff_set_common_formats(ctx, fmts_list); |
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} |
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static int config_input(AVFilterLink *inlink) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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ColorLevelsContext *s = ctx->priv; |
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
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s->nb_comp = desc->nb_components; |
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s->bpp = desc->comp[0].depth >> 3; |
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s->step = (av_get_padded_bits_per_pixel(desc) >> 3) / s->bpp; |
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s->linesize = inlink->w * s->step; |
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ff_fill_rgba_map(s->rgba_map, inlink->format); |
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return 0; |
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} |
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struct thread_data { |
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const uint8_t *srcrow; |
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uint8_t *dstrow; |
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int dst_linesize; |
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int src_linesize; |
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double coeff; |
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uint8_t offset; |
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int h; |
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int imin; |
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int omin; |
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}; |
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#define LOAD_COMMON\ |
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ColorLevelsContext *s = ctx->priv;\ |
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const struct thread_data *td = arg;\ |
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\ |
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int process_h = td->h;\ |
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const int slice_start = (process_h * jobnr ) / nb_jobs;\ |
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const int slice_end = (process_h * (jobnr+1)) / nb_jobs;\ |
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int x, y;\ |
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const uint8_t *srcrow = td->srcrow;\ |
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uint8_t *dstrow = td->dstrow;\ |
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const int step = s->step;\ |
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const uint8_t offset = td->offset;\ |
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\ |
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int imin = td->imin;\ |
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int omin = td->omin;\ |
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double coeff = td->coeff;\ |
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static int colorlevel_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
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{ |
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LOAD_COMMON |
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✓✓ |
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for (y = slice_start; y < slice_end; y++) { |
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const uint8_t *src = srcrow + y * td->src_linesize; |
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uint8_t *dst = dstrow + y * td->dst_linesize; |
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✓✓ |
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for (x = 0; x < s->linesize; x += step) |
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15206400 |
dst[x + offset] = av_clip_uint8((src[x + offset] - imin) * coeff + omin); |
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} |
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return 0; |
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} |
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static int colorlevel_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
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{ |
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LOAD_COMMON |
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✓✓ |
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for (y = slice_start; y < slice_end; y++) { |
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const uint16_t *src = (const uint16_t *)(srcrow + y * td->src_linesize); |
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uint16_t *dst = (uint16_t *)(dstrow + y * td->dst_linesize); |
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✓✓ |
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for (x = 0; x < s->linesize; x += step) |
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dst[x + offset] = av_clip_uint16((src[x + offset] - imin) * coeff + omin); |
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} |
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return 0; |
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} |
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static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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ColorLevelsContext *s = ctx->priv; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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const int step = s->step; |
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AVFrame *out; |
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int x, y, i; |
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✓✗ |
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if (av_frame_is_writable(in)) { |
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out = in; |
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} else { |
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
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if (!out) { |
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av_frame_free(&in); |
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return AVERROR(ENOMEM); |
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} |
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av_frame_copy_props(out, in); |
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} |
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✓✓✗ |
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switch (s->bpp) { |
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case 1: |
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✓✓ |
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for (i = 0; i < s->nb_comp; i++) { |
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Range *r = &s->range[i]; |
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const uint8_t offset = s->rgba_map[i]; |
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const uint8_t *srcrow = in->data[0]; |
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uint8_t *dstrow = out->data[0]; |
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int imin = lrint(r->in_min * UINT8_MAX); |
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int imax = lrint(r->in_max * UINT8_MAX); |
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int omin = lrint(r->out_min * UINT8_MAX); |
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int omax = lrint(r->out_max * UINT8_MAX); |
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double coeff; |
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struct thread_data td; |
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✗✓ |
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if (imin < 0) { |
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imin = UINT8_MAX; |
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for (y = 0; y < inlink->h; y++) { |
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const uint8_t *src = srcrow; |
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for (x = 0; x < s->linesize; x += step) |
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imin = FFMIN(imin, src[x + offset]); |
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srcrow += in->linesize[0]; |
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} |
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} |
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✗✓ |
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if (imax < 0) { |
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srcrow = in->data[0]; |
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imax = 0; |
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for (y = 0; y < inlink->h; y++) { |
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const uint8_t *src = srcrow; |
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for (x = 0; x < s->linesize; x += step) |
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imax = FFMAX(imax, src[x + offset]); |
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srcrow += in->linesize[0]; |
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} |
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} |
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srcrow = in->data[0]; |
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coeff = (omax - omin) / (double)(imax - imin); |
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td.srcrow = srcrow; |
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td.dstrow = dstrow; |
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td.dst_linesize = out->linesize[0]; |
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td.src_linesize = in->linesize[0]; |
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td.coeff = coeff; |
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td.offset = offset; |
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td.h = inlink->h; |
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td.imin = imin; |
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td.omin = omin; |
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✓✗ |
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ctx->internal->execute(ctx, colorlevel_slice_8, &td, NULL, |
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FFMIN(inlink->h, ff_filter_get_nb_threads(ctx))); |
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} |
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break; |
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case 2: |
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✓✓ |
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for (i = 0; i < s->nb_comp; i++) { |
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Range *r = &s->range[i]; |
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const uint8_t offset = s->rgba_map[i]; |
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const uint8_t *srcrow = in->data[0]; |
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uint8_t *dstrow = out->data[0]; |
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int imin = lrint(r->in_min * UINT16_MAX); |
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int imax = lrint(r->in_max * UINT16_MAX); |
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int omin = lrint(r->out_min * UINT16_MAX); |
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int omax = lrint(r->out_max * UINT16_MAX); |
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double coeff; |
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struct thread_data td; |
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✗✓ |
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if (imin < 0) { |
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imin = UINT16_MAX; |
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for (y = 0; y < inlink->h; y++) { |
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const uint16_t *src = (const uint16_t *)srcrow; |
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for (x = 0; x < s->linesize; x += step) |
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imin = FFMIN(imin, src[x + offset]); |
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srcrow += in->linesize[0]; |
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} |
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} |
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✗✓ |
150 |
if (imax < 0) { |
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srcrow = in->data[0]; |
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imax = 0; |
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for (y = 0; y < inlink->h; y++) { |
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const uint16_t *src = (const uint16_t *)srcrow; |
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for (x = 0; x < s->linesize; x += step) |
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imax = FFMAX(imax, src[x + offset]); |
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srcrow += in->linesize[0]; |
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} |
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} |
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278 |
|
150 |
srcrow = in->data[0]; |
279 |
|
150 |
coeff = (omax - omin) / (double)(imax - imin); |
280 |
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281 |
|
150 |
td.srcrow = srcrow; |
282 |
|
150 |
td.dstrow = dstrow; |
283 |
|
150 |
td.dst_linesize = out->linesize[0]; |
284 |
|
150 |
td.src_linesize = in->linesize[0]; |
285 |
|
150 |
td.coeff = coeff; |
286 |
|
150 |
td.offset = offset; |
287 |
|
150 |
td.h = inlink->h; |
288 |
|
150 |
td.imin = imin; |
289 |
|
150 |
td.omin = omin; |
290 |
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|
291 |
✓✗ |
300 |
ctx->internal->execute(ctx, colorlevel_slice_16, &td, NULL, |
292 |
|
300 |
FFMIN(inlink->h, ff_filter_get_nb_threads(ctx))); |
293 |
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} |
294 |
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} |
295 |
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|
296 |
✗✓ |
100 |
if (in != out) |
297 |
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av_frame_free(&in); |
298 |
|
100 |
return ff_filter_frame(outlink, out); |
299 |
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} |
300 |
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|
301 |
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static const AVFilterPad colorlevels_inputs[] = { |
302 |
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{ |
303 |
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.name = "default", |
304 |
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.type = AVMEDIA_TYPE_VIDEO, |
305 |
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.filter_frame = filter_frame, |
306 |
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.config_props = config_input, |
307 |
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}, |
308 |
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{ NULL } |
309 |
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}; |
310 |
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|
311 |
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static const AVFilterPad colorlevels_outputs[] = { |
312 |
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{ |
313 |
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.name = "default", |
314 |
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.type = AVMEDIA_TYPE_VIDEO, |
315 |
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}, |
316 |
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{ NULL } |
317 |
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}; |
318 |
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|
319 |
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AVFilter ff_vf_colorlevels = { |
320 |
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.name = "colorlevels", |
321 |
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.description = NULL_IF_CONFIG_SMALL("Adjust the color levels."), |
322 |
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.priv_size = sizeof(ColorLevelsContext), |
323 |
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.priv_class = &colorlevels_class, |
324 |
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.query_formats = query_formats, |
325 |
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.inputs = colorlevels_inputs, |
326 |
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.outputs = colorlevels_outputs, |
327 |
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, |
328 |
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.process_command = ff_filter_process_command, |
329 |
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}; |