413 lines
18 KiB
C
413 lines
18 KiB
C
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/*
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* Copyright (c) 2016 Floris Sluiter
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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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/**
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* @file
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* Pixel remap filter
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* This filter copies pixel by pixel a source frame to a target frame.
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* It remaps the pixels to a new x,y destination based on two files ymap/xmap.
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* Map files are passed as a parameter and are in PGM format (P2 or P5),
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* where the values are y(rows)/x(cols) coordinates of the source_frame.
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* The *target* frame dimension is based on mapfile dimensions: specified in the
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* header of the mapfile and reflected in the number of datavalues.
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* Dimensions of ymap and xmap must be equal. Datavalues must be positive or zero.
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* Any datavalue in the ymap or xmap which value is higher
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* then the *source* frame height or width is silently ignored, leaving a
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* blank/chromakey pixel. This can safely be used as a feature to create overlays.
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*
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* Algorithm digest:
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* Target_frame[y][x] = Source_frame[ ymap[y][x] ][ [xmap[y][x] ];
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*/
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#include "libavutil/colorspace.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/opt.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 "framesync.h"
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#include "internal.h"
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#include "video.h"
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typedef struct RemapContext {
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const AVClass *class;
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int format;
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int nb_planes;
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int nb_components;
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int step;
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uint8_t fill_rgba[4];
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int fill_color[4];
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FFFrameSync fs;
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int (*remap_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} RemapContext;
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#define OFFSET(x) offsetof(RemapContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption remap_options[] = {
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{ "format", "set output format", OFFSET(format), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "format" },
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{ "color", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, .flags = FLAGS, .unit = "format" },
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{ "gray", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, .flags = FLAGS, .unit = "format" },
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{ "fill", "set the color of the unmapped pixels", OFFSET(fill_rgba), AV_OPT_TYPE_COLOR, {.str="black"}, .flags = FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(remap);
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typedef struct ThreadData {
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AVFrame *in, *xin, *yin, *out;
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int nb_planes;
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int nb_components;
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int step;
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} ThreadData;
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static int query_formats(AVFilterContext *ctx)
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{
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RemapContext *s = ctx->priv;
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
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AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12,
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AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
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AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12,
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AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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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_NONE
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};
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static const enum AVPixelFormat gray_pix_fmts[] = {
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
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AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12,
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AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat map_fmts[] = {
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AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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AVFilterFormats *pix_formats = NULL, *map_formats = NULL;
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int ret;
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pix_formats = ff_make_format_list(s->format ? gray_pix_fmts : pix_fmts);
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if ((ret = ff_formats_ref(pix_formats, &ctx->inputs[0]->out_formats)) < 0 ||
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(ret = ff_formats_ref(pix_formats, &ctx->outputs[0]->in_formats)) < 0)
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return ret;
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map_formats = ff_make_format_list(map_fmts);
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if ((ret = ff_formats_ref(map_formats, &ctx->inputs[1]->out_formats)) < 0)
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return ret;
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return ff_formats_ref(map_formats, &ctx->inputs[2]->out_formats);
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}
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/**
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* remap_planar algorithm expects planes of same size
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* pixels are copied from source to target using :
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* Target_frame[y][x] = Source_frame[ ymap[y][x] ][ [xmap[y][x] ];
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*/
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#define DEFINE_REMAP_PLANAR_FUNC(name, bits, div) \
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static int remap_planar##bits##_##name##_slice(AVFilterContext *ctx, void *arg, \
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int jobnr, int nb_jobs) \
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{ \
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RemapContext *s = ctx->priv; \
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const ThreadData *td = arg; \
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const AVFrame *in = td->in; \
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const AVFrame *xin = td->xin; \
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const AVFrame *yin = td->yin; \
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const AVFrame *out = td->out; \
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const int slice_start = (out->height * jobnr ) / nb_jobs; \
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const int slice_end = (out->height * (jobnr+1)) / nb_jobs; \
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const int xlinesize = xin->linesize[0] / 2; \
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const int ylinesize = yin->linesize[0] / 2; \
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int x , y, plane; \
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\
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for (plane = 0; plane < td->nb_planes ; plane++) { \
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const int dlinesize = out->linesize[plane] / div; \
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const uint##bits##_t *src = (const uint##bits##_t *)in->data[plane]; \
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uint##bits##_t *dst = (uint##bits##_t *)out->data[plane] + slice_start * dlinesize; \
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const int slinesize = in->linesize[plane] / div; \
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const uint16_t *xmap = (const uint16_t *)xin->data[0] + slice_start * xlinesize; \
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const uint16_t *ymap = (const uint16_t *)yin->data[0] + slice_start * ylinesize; \
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const int color = s->fill_color[plane]; \
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\
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for (y = slice_start; y < slice_end; y++) { \
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for (x = 0; x < out->width; x++) { \
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if (ymap[x] < in->height && xmap[x] < in->width) { \
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dst[x] = src[ymap[x] * slinesize + xmap[x]]; \
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} else { \
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dst[x] = color; \
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} \
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} \
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dst += dlinesize; \
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xmap += xlinesize; \
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ymap += ylinesize; \
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} \
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} \
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\
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return 0; \
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}
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DEFINE_REMAP_PLANAR_FUNC(nearest, 8, 1)
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DEFINE_REMAP_PLANAR_FUNC(nearest, 16, 2)
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/**
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* remap_packed algorithm expects pixels with both padded bits (step) and
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* number of components correctly set.
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* pixels are copied from source to target using :
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* Target_frame[y][x] = Source_frame[ ymap[y][x] ][ [xmap[y][x] ];
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*/
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#define DEFINE_REMAP_PACKED_FUNC(name, bits, div) \
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static int remap_packed##bits##_##name##_slice(AVFilterContext *ctx, void *arg, \
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int jobnr, int nb_jobs) \
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{ \
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RemapContext *s = ctx->priv; \
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const ThreadData *td = arg; \
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const AVFrame *in = td->in; \
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const AVFrame *xin = td->xin; \
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const AVFrame *yin = td->yin; \
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const AVFrame *out = td->out; \
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const int slice_start = (out->height * jobnr ) / nb_jobs; \
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const int slice_end = (out->height * (jobnr+1)) / nb_jobs; \
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const int dlinesize = out->linesize[0] / div; \
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const int slinesize = in->linesize[0] / div; \
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const int xlinesize = xin->linesize[0] / 2; \
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const int ylinesize = yin->linesize[0] / 2; \
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const uint##bits##_t *src = (const uint##bits##_t *)in->data[0]; \
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uint##bits##_t *dst = (uint##bits##_t *)out->data[0] + slice_start * dlinesize; \
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const uint16_t *xmap = (const uint16_t *)xin->data[0] + slice_start * xlinesize; \
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const uint16_t *ymap = (const uint16_t *)yin->data[0] + slice_start * ylinesize; \
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const int step = td->step / div; \
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int c, x, y; \
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\
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for (y = slice_start; y < slice_end; y++) { \
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for (x = 0; x < out->width; x++) { \
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for (c = 0; c < td->nb_components; c++) { \
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if (ymap[x] < in->height && xmap[x] < in->width) { \
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dst[x * step + c] = src[ymap[x] * slinesize + xmap[x] * step + c]; \
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} else { \
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dst[x * step + c] = s->fill_color[c]; \
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} \
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} \
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} \
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dst += dlinesize; \
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xmap += xlinesize; \
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ymap += ylinesize; \
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} \
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\
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return 0; \
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}
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DEFINE_REMAP_PACKED_FUNC(nearest, 8, 1)
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DEFINE_REMAP_PACKED_FUNC(nearest, 16, 2)
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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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RemapContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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int depth = desc->comp[0].depth;
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int is_rgb = !!(desc->flags & AV_PIX_FMT_FLAG_RGB);
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int factor = 1 << (depth - 8);
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uint8_t rgba_map[4];
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ff_fill_rgba_map(rgba_map, inlink->format);
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s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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s->nb_components = desc->nb_components;
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if (is_rgb) {
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s->fill_color[rgba_map[0]] = s->fill_rgba[0] * factor;
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s->fill_color[rgba_map[1]] = s->fill_rgba[1] * factor;
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s->fill_color[rgba_map[2]] = s->fill_rgba[2] * factor;
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s->fill_color[rgba_map[3]] = s->fill_rgba[3] * factor;
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} else {
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s->fill_color[0] = RGB_TO_Y_BT709(s->fill_rgba[0], s->fill_rgba[1], s->fill_rgba[2]) * factor;
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s->fill_color[1] = RGB_TO_U_BT709(s->fill_rgba[0], s->fill_rgba[1], s->fill_rgba[2], 0) * factor;
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s->fill_color[2] = RGB_TO_V_BT709(s->fill_rgba[0], s->fill_rgba[1], s->fill_rgba[2], 0) * factor;
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s->fill_color[3] = s->fill_rgba[3] * factor;
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}
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if (depth == 8) {
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if (s->nb_planes > 1 || s->nb_components == 1) {
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s->remap_slice = remap_planar8_nearest_slice;
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} else {
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s->remap_slice = remap_packed8_nearest_slice;
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}
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} else {
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if (s->nb_planes > 1 || s->nb_components == 1) {
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s->remap_slice = remap_planar16_nearest_slice;
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} else {
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s->remap_slice = remap_packed16_nearest_slice;
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}
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}
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s->step = av_get_padded_bits_per_pixel(desc) >> 3;
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return 0;
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}
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static int process_frame(FFFrameSync *fs)
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{
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AVFilterContext *ctx = fs->parent;
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RemapContext *s = fs->opaque;
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AVFilterLink *outlink = ctx->outputs[0];
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AVFrame *out, *in, *xpic, *ypic;
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int ret;
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if ((ret = ff_framesync_get_frame(&s->fs, 0, &in, 0)) < 0 ||
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(ret = ff_framesync_get_frame(&s->fs, 1, &xpic, 0)) < 0 ||
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(ret = ff_framesync_get_frame(&s->fs, 2, &ypic, 0)) < 0)
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return ret;
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if (ctx->is_disabled) {
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out = av_frame_clone(in);
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if (!out)
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return AVERROR(ENOMEM);
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} else {
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ThreadData td;
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out)
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return AVERROR(ENOMEM);
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av_frame_copy_props(out, in);
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td.in = in;
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td.xin = xpic;
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td.yin = ypic;
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td.out = out;
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td.nb_planes = s->nb_planes;
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td.nb_components = s->nb_components;
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td.step = s->step;
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ctx->internal->execute(ctx, s->remap_slice, &td, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
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}
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out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
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return ff_filter_frame(outlink, out);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int config_output(AVFilterLink *outlink)
|
||
|
|
{
|
||
|
|
AVFilterContext *ctx = outlink->src;
|
||
|
|
RemapContext *s = ctx->priv;
|
||
|
|
AVFilterLink *srclink = ctx->inputs[0];
|
||
|
|
AVFilterLink *xlink = ctx->inputs[1];
|
||
|
|
AVFilterLink *ylink = ctx->inputs[2];
|
||
|
|
FFFrameSyncIn *in;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (xlink->w != ylink->w || xlink->h != ylink->h) {
|
||
|
|
av_log(ctx, AV_LOG_ERROR, "Second input link %s parameters "
|
||
|
|
"(size %dx%d) do not match the corresponding "
|
||
|
|
"third input link %s parameters (%dx%d)\n",
|
||
|
|
ctx->input_pads[1].name, xlink->w, xlink->h,
|
||
|
|
ctx->input_pads[2].name, ylink->w, ylink->h);
|
||
|
|
return AVERROR(EINVAL);
|
||
|
|
}
|
||
|
|
|
||
|
|
outlink->w = xlink->w;
|
||
|
|
outlink->h = xlink->h;
|
||
|
|
outlink->sample_aspect_ratio = srclink->sample_aspect_ratio;
|
||
|
|
outlink->frame_rate = srclink->frame_rate;
|
||
|
|
|
||
|
|
ret = ff_framesync_init(&s->fs, ctx, 3);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
in = s->fs.in;
|
||
|
|
in[0].time_base = srclink->time_base;
|
||
|
|
in[1].time_base = xlink->time_base;
|
||
|
|
in[2].time_base = ylink->time_base;
|
||
|
|
in[0].sync = 2;
|
||
|
|
in[0].before = EXT_STOP;
|
||
|
|
in[0].after = EXT_STOP;
|
||
|
|
in[1].sync = 1;
|
||
|
|
in[1].before = EXT_NULL;
|
||
|
|
in[1].after = EXT_INFINITY;
|
||
|
|
in[2].sync = 1;
|
||
|
|
in[2].before = EXT_NULL;
|
||
|
|
in[2].after = EXT_INFINITY;
|
||
|
|
s->fs.opaque = s;
|
||
|
|
s->fs.on_event = process_frame;
|
||
|
|
|
||
|
|
ret = ff_framesync_configure(&s->fs);
|
||
|
|
outlink->time_base = s->fs.time_base;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int activate(AVFilterContext *ctx)
|
||
|
|
{
|
||
|
|
RemapContext *s = ctx->priv;
|
||
|
|
return ff_framesync_activate(&s->fs);
|
||
|
|
}
|
||
|
|
|
||
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
||
|
|
{
|
||
|
|
RemapContext *s = ctx->priv;
|
||
|
|
|
||
|
|
ff_framesync_uninit(&s->fs);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const AVFilterPad remap_inputs[] = {
|
||
|
|
{
|
||
|
|
.name = "source",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.config_props = config_input,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.name = "xmap",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.name = "ymap",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
static const AVFilterPad remap_outputs[] = {
|
||
|
|
{
|
||
|
|
.name = "default",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.config_props = config_output,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
AVFilter ff_vf_remap = {
|
||
|
|
.name = "remap",
|
||
|
|
.description = NULL_IF_CONFIG_SMALL("Remap pixels."),
|
||
|
|
.priv_size = sizeof(RemapContext),
|
||
|
|
.uninit = uninit,
|
||
|
|
.query_formats = query_formats,
|
||
|
|
.activate = activate,
|
||
|
|
.inputs = remap_inputs,
|
||
|
|
.outputs = remap_outputs,
|
||
|
|
.priv_class = &remap_class,
|
||
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
|
||
|
|
};
|