286 lines
9.4 KiB
C++
286 lines
9.4 KiB
C++
/*
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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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extern "C" {
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#include "libavutil/opt.h"
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#include "libavutil/imgutils.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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}
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extern "C" {
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typedef struct ColorizeLSDContext {
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const AVClass *classs;
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// user input
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float speed;
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float hue;
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float saturation;
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float lightness;
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float mix;
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float mixcolor;
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int depth; // bit depth of planes
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int c[3]; // yuv of current overlay color (recalculated every frame)
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// size of input/output planes
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int planewidth[4];
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int planeheight[4];
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// ptr to multithreaded functions
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int (*do_plane_slice[2])(AVFilterContext *s, void *arg,
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int jobnr, int nb_jobs);
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} ColorizeLSDContext;
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} // extern c
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static inline float lerpf(float v0, float v1, float f)
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{
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return v0 + (v1 - v0) * f;
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}
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// luminance slices
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template<typename T>
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static int colorizey_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorizeLSDContext *s = (ColorizeLSDContext *) ctx->priv;
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AVFrame *frame = (AVFrame *) arg;
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const int width = s->planewidth[0];
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const int height = s->planeheight[0];
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const int slice_start = (height * jobnr) / nb_jobs;
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const int slice_end = (height * (jobnr + 1)) / nb_jobs;
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const int ylinesize = frame->linesize[0] / (sizeof(T));
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T *yptr = (T*) frame->data[0] + slice_start * ylinesize;
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const int yv = s->c[0];
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const float mix = s->mix;
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for (int y = slice_start; y < slice_end; y++) {
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for (int x = 0; x < width; x++)
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yptr[x] = lerpf(yv, yptr[x], mix);
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yptr += ylinesize;
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}
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return 0;
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}
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// color slices
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template<typename T>
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static int colorize_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorizeLSDContext *s = (ColorizeLSDContext *) ctx->priv;
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AVFrame *frame = (AVFrame *) arg;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const int slice_start = (height * jobnr) / nb_jobs;
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const int slice_end = (height * (jobnr + 1)) / nb_jobs;
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const int ulinesize = frame->linesize[1] / sizeof(T);
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const int vlinesize = frame->linesize[2] / sizeof(T);
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T *uptr = (T*) frame->data[1] + slice_start * ulinesize;
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T *vptr = (T*) frame->data[2] + slice_start * vlinesize;
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const int u = s->c[1];
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const int v = s->c[2];
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const float mixcolor = s->mixcolor;
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for (int y = slice_start; y < slice_end; y++) {
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for (int x = 0; x < width; x++) {
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uptr[x] = lerpf(u, uptr[x], mixcolor);
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vptr[x] = lerpf(v, vptr[x], mixcolor);
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}
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uptr += ulinesize;
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vptr += vlinesize;
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}
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return 0;
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}
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extern "C" {
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static int do_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorizeLSDContext *s = (ColorizeLSDContext *) ctx->priv;
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s->do_plane_slice[0](ctx, arg, jobnr, nb_jobs);
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s->do_plane_slice[1](ctx, arg, jobnr, nb_jobs);
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return 0;
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}
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static float hue2rgb(float p, float q, float t)
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{
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if (t < 0.f) t += 1.f;
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if (t > 1.f) t -= 1.f;
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if (t < 1.f/6.f) return p + (q - p) * 6.f * t;
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if (t < 1.f/2.f) return q;
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if (t < 2.f/3.f) return p + (q - p) * (2.f/3.f - t) * 6.f;
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return p;
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}
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static void hsl2rgb(float h, float s, float l, float *r, float *g, float *b)
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{
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h /= 360.f;
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if (s == 0.f) {
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*r = *g = *b = l;
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} else {
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const float q = l < 0.5f ? l * (1.f + s) : l + s - l * s;
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const float p = 2.f * l - q;
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*r = hue2rgb(p, q, h + 1.f / 3.f);
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*g = hue2rgb(p, q, h);
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*b = hue2rgb(p, q, h - 1.f / 3.f);
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}
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}
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static void rgb2yuv(float r, float g, float b, int *y, int *u, int *v, int depth)
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{
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*y = ((0.21260*219.0/255.0) * r + (0.71520*219.0/255.0) * g +
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(0.07220*219.0/255.0) * b) * ((1 << depth) - 1);
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*u = (-(0.11457*224.0/255.0) * r - (0.38543*224.0/255.0) * g +
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(0.50000*224.0/255.0) * b + 0.5) * ((1 << depth) - 1);
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*v = ((0.50000*224.0/255.0) * r - (0.45415*224.0/255.0) * g -
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(0.04585*224.0/255.0) * b + 0.5) * ((1 << depth) - 1);
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
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{
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double timebase = av_q2d(inlink->time_base);
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AVFilterContext *ctx = (AVFilterContext *) inlink->dst;
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ColorizeLSDContext *s = (ColorizeLSDContext *) ctx->priv;
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float c[3]; // temp rgb
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double time = timebase * frame->pts;
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uint32_t pos = (uint32_t) ((time * s->speed * 360) + s->hue) % 360;
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hsl2rgb(pos, s->saturation, s->lightness, &c[0], &c[1], &c[2]);
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rgb2yuv(c[0], c[1], c[2], &s->c[0], &s->c[1], &s->c[2], s->depth);
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ff_filter_execute(ctx, do_slice, frame, NULL,
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FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx)));
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return ff_filter_frame(ctx->outputs[0], frame);
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}
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static const enum AVPixelFormat pixel_fmts[] = {
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AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
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AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
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AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUVJ411P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV440P10,
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AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
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AV_PIX_FMT_YUV440P12,
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AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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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_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
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AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
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AV_PIX_FMT_NONE
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};
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static av_cold int config_input(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = (AVFilterContext *) inlink->dst;
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ColorizeLSDContext *s = (ColorizeLSDContext *) ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get((AVPixelFormat) inlink->format);
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int depth;
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s->depth = depth = desc->comp[0].depth;
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s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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s->planewidth[0] = s->planewidth[3] = inlink->w;
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s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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s->planeheight[0] = s->planeheight[3] = inlink->h;
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s->do_plane_slice[0] = depth <= 8 ? colorizey_slice<uint8_t> : colorizey_slice<uint16_t>;
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s->do_plane_slice[1] = depth <= 8 ? colorize_slice<uint8_t> : colorize_slice<uint16_t>;
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return 0;
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}
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static const AVFilterPad colorizelsd_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
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.filter_frame = filter_frame,
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.config_props = config_input,
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},
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};
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static const AVFilterPad colorizelsd_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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},
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};
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#define OFFSET(x) offsetof(ColorizeLSDContext, x)
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#define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption colorizelsd_options[] = {
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{ "speed", "set the rotation speed in r/s", OFFSET(speed), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0.0000001, 1000, VF},
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{ "hue", "set the start hue", OFFSET(hue), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 360, VF },
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{ "saturation", "set the start saturation", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl=0.5},0, 1, VF },
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{ "lightness", "set the start lightness", OFFSET(lightness), AV_OPT_TYPE_FLOAT, {.dbl=0.5},0, 1, VF },
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{ "mix", "set the mix of source lightness", OFFSET(mix), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0, 1, VF },
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{ "mixcolor", "set the mix of source color", OFFSET(mixcolor), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, VF },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(colorizelsd);
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extern "C" const AVFilter ff_vf_colorizelsd = {
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.name = "colorizelsd",
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.description = NULL_IF_CONFIG_SMALL("Overlay a color change on the video stream."),
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// FILTER_INPUTS(colorizelsd_inputs),
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// FILTER_OUTPUTS(colorizelsd_outputs),
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.inputs = colorizelsd_inputs,
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.outputs = colorizelsd_outputs,
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.priv_class = &colorizelsd_class,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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.nb_inputs = 1,
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.nb_outputs = 1,
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.formats_state = FF_FILTER_FORMATS_PIXFMT_LIST,
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// preinit
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// init
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// init_dict
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// uninit
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.formats = { .pixels_list = pixel_fmts },
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.priv_size = sizeof(ColorizeLSDContext),
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// FILTER_PIXFMTS_ARRAY(pixel_fmts),
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.process_command = NULL, // ff_filter_process_command
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// activate
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};
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} // extern c
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