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426 lines
14 KiB
426 lines
14 KiB
/* |
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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/pixdesc.h" |
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#include "libavutil/opt.h" |
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#include "avfilter.h" |
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#include "filters.h" |
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#include "framesync.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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int (*displace_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); |
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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|AV_OPT_FLAG_RUNTIME_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, .unit = "edge" }, |
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{ "blank", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_BLANK}, 0, 0, FLAGS, .unit = "edge" }, |
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{ "smear", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_SMEAR}, 0, 0, FLAGS, .unit = "edge" }, |
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{ "wrap" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_WRAP}, 0, 0, FLAGS, .unit = "edge" }, |
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{ "mirror" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_MIRROR}, 0, 0, FLAGS, .unit = "edge" }, |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(displace); |
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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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typedef struct ThreadData { |
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AVFrame *in, *xin, *yin, *out; |
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} ThreadData; |
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static int displace_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
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{ |
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DisplaceContext *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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for (int 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 slice_start = (h * jobnr ) / nb_jobs; |
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const int slice_end = (h * (jobnr+1)) / nb_jobs; |
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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 = xin->linesize[plane]; |
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const int ylinesize = yin->linesize[plane]; |
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const uint8_t *src = in->data[plane]; |
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const uint8_t *ysrc = yin->data[plane] + slice_start * ylinesize; |
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const uint8_t *xsrc = xin->data[plane] + slice_start * xlinesize; |
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uint8_t *dst = out->data[plane] + slice_start * dlinesize; |
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const uint8_t blank = s->blank[plane]; |
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for (int y = slice_start; y < slice_end; y++) { |
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switch (s->edge) { |
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case EDGE_BLANK: |
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for (int 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 (int 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 (int 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 (int 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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return 0; |
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} |
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static int displace_packed(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
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{ |
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DisplaceContext *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 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 slice_start = (h * jobnr ) / nb_jobs; |
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const int slice_end = (h * (jobnr+1)) / nb_jobs; |
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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 = xin->linesize[0]; |
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const int ylinesize = yin->linesize[0]; |
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const uint8_t *src = in->data[0]; |
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const uint8_t *ysrc = yin->data[0] + slice_start * ylinesize; |
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const uint8_t *xsrc = xin->data[0] + slice_start * xlinesize; |
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uint8_t *dst = out->data[0] + slice_start * dlinesize; |
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const uint8_t *blank = s->blank; |
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for (int y = slice_start; y < slice_end; y++) { |
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switch (s->edge) { |
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case EDGE_BLANK: |
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for (int x = 0; x < w; x++) { |
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for (int 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 (int x = 0; x < w; x++) { |
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for (int 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 (int x = 0; x < w; x++) { |
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for (int 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 (int x = 0; x < w; x++) { |
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for (int 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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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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DisplaceContext *s = fs->opaque; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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AVFrame *out, *in, *xin, *yin; |
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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, &xin, 0)) < 0 || |
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(ret = ff_framesync_get_frame(&s->fs, 2, &yin, 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 = xin; |
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td.yin = yin; |
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td.out = out; |
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ff_filter_execute(ctx, s->displace_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_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_slice = displace_planar; |
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else |
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s->displace_slice = 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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FilterLink *outl = ff_filter_link(outlink); |
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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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FilterLink *sl = ff_filter_link(srclink); |
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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->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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outl->frame_rate = sl->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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DisplaceContext *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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DisplaceContext *s = ctx->priv; |
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ff_framesync_uninit(&s->fs); |
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} |
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static const AVFilterPad displace_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 displace_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_displace = { |
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.name = "displace", |
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.description = NULL_IF_CONFIG_SMALL("Displace pixels."), |
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.priv_size = sizeof(DisplaceContext), |
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.uninit = uninit, |
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.activate = activate, |
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FILTER_INPUTS(displace_inputs), |
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FILTER_OUTPUTS(displace_outputs), |
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FILTER_PIXFMTS_ARRAY(pix_fmts), |
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.priv_class = &displace_class, |
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | |
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AVFILTER_FLAG_SLICE_THREADS, |
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.process_command = ff_filter_process_command, |
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};
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