415 lines
13 KiB
C
415 lines
13 KiB
C
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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/pixdesc.h"
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#include "libavutil/opt.h"
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#include "avfilter.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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enum EdgeMode {
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EDGE_BLANK,
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EDGE_SMEAR,
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EDGE_WRAP,
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EDGE_MIRROR,
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EDGE_NB
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};
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typedef struct DisplaceContext {
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const AVClass *class;
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int width[4], height[4];
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enum EdgeMode edge;
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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 blank[4];
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FFFrameSync fs;
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void (*displace)(struct DisplaceContext *s, const AVFrame *in,
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const AVFrame *xpic, const AVFrame *ypic, AVFrame *out);
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} DisplaceContext;
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#define OFFSET(x) offsetof(DisplaceContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption displace_options[] = {
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{ "edge", "set edge mode", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=EDGE_SMEAR}, 0, EDGE_NB-1, FLAGS, "edge" },
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{ "blank", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_BLANK}, 0, 0, FLAGS, "edge" },
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{ "smear", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_SMEAR}, 0, 0, FLAGS, "edge" },
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{ "wrap" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_WRAP}, 0, 0, FLAGS, "edge" },
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{ "mirror" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_MIRROR}, 0, 0, FLAGS, "edge" },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(displace);
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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_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
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AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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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_0RGB, AV_PIX_FMT_0BGR, AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE
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};
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return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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}
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static void displace_planar(DisplaceContext *s, const AVFrame *in,
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const AVFrame *xpic, const AVFrame *ypic,
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AVFrame *out)
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{
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int plane, x, y;
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for (plane = 0; plane < s->nb_planes; plane++) {
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const int h = s->height[plane];
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const int w = s->width[plane];
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const int dlinesize = out->linesize[plane];
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const int slinesize = in->linesize[plane];
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const int xlinesize = xpic->linesize[plane];
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const int ylinesize = ypic->linesize[plane];
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const uint8_t *src = in->data[plane];
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const uint8_t *ysrc = ypic->data[plane];
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const uint8_t *xsrc = xpic->data[plane];
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uint8_t *dst = out->data[plane];
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const uint8_t blank = s->blank[plane];
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for (y = 0; y < h; y++) {
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switch (s->edge) {
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case EDGE_BLANK:
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for (x = 0; x < w; x++) {
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int Y = y + ysrc[x] - 128;
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int X = x + xsrc[x] - 128;
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if (Y < 0 || Y >= h || X < 0 || X >= w)
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dst[x] = blank;
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else
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dst[x] = src[Y * slinesize + X];
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}
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break;
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case EDGE_SMEAR:
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for (x = 0; x < w; x++) {
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int Y = av_clip(y + ysrc[x] - 128, 0, h - 1);
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int X = av_clip(x + xsrc[x] - 128, 0, w - 1);
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dst[x] = src[Y * slinesize + X];
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}
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break;
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case EDGE_WRAP:
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for (x = 0; x < w; x++) {
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int Y = (y + ysrc[x] - 128) % h;
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int X = (x + xsrc[x] - 128) % w;
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if (Y < 0)
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Y += h;
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if (X < 0)
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X += w;
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dst[x] = src[Y * slinesize + X];
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}
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break;
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case EDGE_MIRROR:
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for (x = 0; x < w; x++) {
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int Y = y + ysrc[x] - 128;
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int X = x + xsrc[x] - 128;
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if (Y < 0)
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Y = (-Y) % h;
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if (X < 0)
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X = (-X) % w;
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if (Y >= h)
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Y = h - (Y % h) - 1;
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if (X >= w)
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X = w - (X % w) - 1;
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dst[x] = src[Y * slinesize + X];
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}
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break;
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}
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ysrc += ylinesize;
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xsrc += xlinesize;
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dst += dlinesize;
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}
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}
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}
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static void displace_packed(DisplaceContext *s, const AVFrame *in,
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const AVFrame *xpic, const AVFrame *ypic,
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AVFrame *out)
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{
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const int step = s->step;
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const int h = s->height[0];
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const int w = s->width[0];
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const int dlinesize = out->linesize[0];
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const int slinesize = in->linesize[0];
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const int xlinesize = xpic->linesize[0];
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const int ylinesize = ypic->linesize[0];
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const uint8_t *src = in->data[0];
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const uint8_t *ysrc = ypic->data[0];
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const uint8_t *xsrc = xpic->data[0];
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const uint8_t *blank = s->blank;
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uint8_t *dst = out->data[0];
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int c, x, y;
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for (y = 0; y < h; y++) {
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switch (s->edge) {
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case EDGE_BLANK:
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for (x = 0; x < w; x++) {
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for (c = 0; c < s->nb_components; c++) {
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int Y = y + (ysrc[x * step + c] - 128);
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int X = x + (xsrc[x * step + c] - 128);
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if (Y < 0 || Y >= h || X < 0 || X >= w)
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dst[x * step + c] = blank[c];
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else
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dst[x * step + c] = src[Y * slinesize + X * step + c];
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}
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}
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break;
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case EDGE_SMEAR:
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for (x = 0; x < w; x++) {
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for (c = 0; c < s->nb_components; c++) {
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int Y = av_clip(y + (ysrc[x * step + c] - 128), 0, h - 1);
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int X = av_clip(x + (xsrc[x * step + c] - 128), 0, w - 1);
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dst[x * step + c] = src[Y * slinesize + X * step + c];
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}
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}
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break;
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case EDGE_WRAP:
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for (x = 0; x < w; x++) {
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for (c = 0; c < s->nb_components; c++) {
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int Y = (y + (ysrc[x * step + c] - 128)) % h;
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int X = (x + (xsrc[x * step + c] - 128)) % w;
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if (Y < 0)
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Y += h;
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if (X < 0)
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X += w;
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dst[x * step + c] = src[Y * slinesize + X * step + c];
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}
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}
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break;
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case EDGE_MIRROR:
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for (x = 0; x < w; x++) {
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for (c = 0; c < s->nb_components; c++) {
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int Y = y + ysrc[x * step + c] - 128;
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int X = x + xsrc[x * step + c] - 128;
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if (Y < 0)
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Y = (-Y) % h;
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if (X < 0)
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X = (-X) % w;
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if (Y >= h)
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Y = h - (Y % h) - 1;
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if (X >= w)
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X = w - (X % w) - 1;
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dst[x * step + c] = src[Y * slinesize + X * step + c];
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}
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}
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break;
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}
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ysrc += ylinesize;
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xsrc += xlinesize;
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dst += dlinesize;
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}
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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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DisplaceContext *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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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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s->displace(s, in, xpic, ypic, out);
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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_input(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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DisplaceContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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int vsub, hsub;
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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 (s->nb_planes > 1 || s->nb_components == 1)
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s->displace = displace_planar;
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else
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s->displace = displace_packed;
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if (!(desc->flags & AV_PIX_FMT_FLAG_RGB)) {
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s->blank[1] = s->blank[2] = 128;
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s->blank[0] = 16;
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}
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s->step = av_get_padded_bits_per_pixel(desc) >> 3;
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hsub = desc->log2_chroma_w;
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vsub = desc->log2_chroma_h;
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s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
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s->height[0] = s->height[3] = inlink->h;
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s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
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s->width[0] = s->width[3] = inlink->w;
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return 0;
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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DisplaceContext *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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FFFrameSyncIn *in;
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int ret;
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if (srclink->format != xlink->format ||
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srclink->format != ylink->format) {
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av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
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return AVERROR(EINVAL);
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}
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if (srclink->w != xlink->w ||
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srclink->h != xlink->h ||
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srclink->w != ylink->w ||
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srclink->h != ylink->h) {
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av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
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"(size %dx%d) do not match the corresponding "
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"second input link %s parameters (%dx%d) "
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"and/or third input link %s parameters (%dx%d)\n",
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ctx->input_pads[0].name, srclink->w, srclink->h,
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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 = srclink->w;
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outlink->h = srclink->h;
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outlink->sample_aspect_ratio = srclink->sample_aspect_ratio;
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outlink->frame_rate = srclink->frame_rate;
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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)
|
||
|
|
{
|
||
|
|
DisplaceContext *s = ctx->priv;
|
||
|
|
return ff_framesync_activate(&s->fs);
|
||
|
|
}
|
||
|
|
|
||
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
||
|
|
{
|
||
|
|
DisplaceContext *s = ctx->priv;
|
||
|
|
|
||
|
|
ff_framesync_uninit(&s->fs);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const AVFilterPad displace_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 displace_outputs[] = {
|
||
|
|
{
|
||
|
|
.name = "default",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.config_props = config_output,
|
||
|
|
},
|
||
|
|
{ NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
AVFilter ff_vf_displace = {
|
||
|
|
.name = "displace",
|
||
|
|
.description = NULL_IF_CONFIG_SMALL("Displace pixels."),
|
||
|
|
.priv_size = sizeof(DisplaceContext),
|
||
|
|
.uninit = uninit,
|
||
|
|
.query_formats = query_formats,
|
||
|
|
.activate = activate,
|
||
|
|
.inputs = displace_inputs,
|
||
|
|
.outputs = displace_outputs,
|
||
|
|
.priv_class = &displace_class,
|
||
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
|
||
|
|
};
|