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409 lines
18 KiB
409 lines
18 KiB
/* |
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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 "filters.h" |
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#include "formats.h" |
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#include "framesync.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, .unit = "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]->outcfg.formats)) < 0 || |
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(ret = ff_formats_ref(pix_formats, &ctx->outputs[0]->incfg.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]->outcfg.formats)) < 0) |
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return ret; |
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return ff_formats_ref(map_formats, &ctx->inputs[2]->outcfg.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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{ |
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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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ff_filter_execute(ctx, s->remap_slice, &td, NULL, |
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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); |
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} |
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static int config_output(AVFilterLink *outlink) |
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{ |
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AVFilterContext *ctx = outlink->src; |
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RemapContext *s = ctx->priv; |
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AVFilterLink *srclink = ctx->inputs[0]; |
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AVFilterLink *xlink = ctx->inputs[1]; |
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AVFilterLink *ylink = ctx->inputs[2]; |
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FilterLink *il = ff_filter_link(srclink); |
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FilterLink *ol = ff_filter_link(outlink); |
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FFFrameSyncIn *in; |
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int ret; |
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if (xlink->w != ylink->w || xlink->h != ylink->h) { |
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av_log(ctx, AV_LOG_ERROR, "Second input link %s parameters " |
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"(size %dx%d) do not match the corresponding " |
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"third input link %s parameters (%dx%d)\n", |
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ctx->input_pads[1].name, xlink->w, xlink->h, |
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ctx->input_pads[2].name, ylink->w, ylink->h); |
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return AVERROR(EINVAL); |
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} |
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outlink->w = xlink->w; |
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outlink->h = xlink->h; |
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outlink->sample_aspect_ratio = srclink->sample_aspect_ratio; |
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ol->frame_rate = il->frame_rate; |
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ret = ff_framesync_init(&s->fs, ctx, 3); |
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if (ret < 0) |
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return ret; |
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in = s->fs.in; |
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in[0].time_base = srclink->time_base; |
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in[1].time_base = xlink->time_base; |
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in[2].time_base = ylink->time_base; |
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in[0].sync = 2; |
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in[0].before = EXT_STOP; |
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in[0].after = EXT_STOP; |
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in[1].sync = 1; |
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in[1].before = EXT_NULL; |
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in[1].after = EXT_INFINITY; |
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in[2].sync = 1; |
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in[2].before = EXT_NULL; |
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in[2].after = EXT_INFINITY; |
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s->fs.opaque = s; |
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s->fs.on_event = process_frame; |
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ret = ff_framesync_configure(&s->fs); |
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outlink->time_base = s->fs.time_base; |
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return ret; |
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} |
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static int activate(AVFilterContext *ctx) |
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{ |
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RemapContext *s = ctx->priv; |
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return ff_framesync_activate(&s->fs); |
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} |
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static av_cold void uninit(AVFilterContext *ctx) |
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{ |
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RemapContext *s = ctx->priv; |
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ff_framesync_uninit(&s->fs); |
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} |
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static const AVFilterPad remap_inputs[] = { |
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{ |
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.name = "source", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.config_props = config_input, |
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}, |
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{ |
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.name = "xmap", |
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.type = AVMEDIA_TYPE_VIDEO, |
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}, |
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{ |
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.name = "ymap", |
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.type = AVMEDIA_TYPE_VIDEO, |
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}, |
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}; |
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static const AVFilterPad remap_outputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.config_props = config_output, |
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}, |
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}; |
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const AVFilter ff_vf_remap = { |
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.name = "remap", |
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.description = NULL_IF_CONFIG_SMALL("Remap pixels."), |
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.priv_size = sizeof(RemapContext), |
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.uninit = uninit, |
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.activate = activate, |
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FILTER_INPUTS(remap_inputs), |
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FILTER_OUTPUTS(remap_outputs), |
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FILTER_QUERY_FUNC(query_formats), |
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.priv_class = &remap_class, |
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.flags = AVFILTER_FLAG_SLICE_THREADS, |
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};
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