X-Git-Url: https://git.piment-noir.org/?p=deb_ffmpeg.git;a=blobdiff_plain;f=ffmpeg%2Flibavfilter%2Fvf_xbr.c;fp=ffmpeg%2Flibavfilter%2Fvf_xbr.c;h=47e4b769ca233a0489967d01428a8f8ba07730a5;hp=0000000000000000000000000000000000000000;hb=f6fa7814ccfe3e76514b36cf04f5cd3cb657c8cf;hpb=2ba45a602cbfa7b771effba9b11bb4245c21bc00 diff --git a/ffmpeg/libavfilter/vf_xbr.c b/ffmpeg/libavfilter/vf_xbr.c new file mode 100644 index 0000000..47e4b76 --- /dev/null +++ b/ffmpeg/libavfilter/vf_xbr.c @@ -0,0 +1,440 @@ +/* + * This file is part of FFmpeg. + * + * Copyright (c) 2011, 2012 Hyllian/Jararaca + * Copyright (c) 2014 Arwa Arif + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * XBR Filter is used for depixelization of image. + * This is based on Hyllian's xBR shader. + * + * @see http://www.libretro.com/forums/viewtopic.php?f=6&t=134 + * @see https://github.com/yoyofr/iFBA/blob/master/fba_src/src/intf/video/scalers/xbr.cpp + */ + +#include "libavutil/opt.h" +#include "libavutil/avassert.h" +#include "libavutil/pixdesc.h" +#include "internal.h" + +#define RGB_MASK 0x00FFFFFF +#define LB_MASK 0x00FEFEFE +#define RED_BLUE_MASK 0x00FF00FF +#define GREEN_MASK 0x0000FF00 + +typedef int (*xbrfunc_t)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); + +typedef struct { + const AVClass *class; + int n; + xbrfunc_t func; + uint32_t rgbtoyuv[1<<24]; +} XBRContext; + +typedef struct ThreadData { + AVFrame *in, *out; + const uint32_t *rgbtoyuv; +} ThreadData; + +#define OFFSET(x) offsetof(XBRContext, x) +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM +static const AVOption xbr_options[] = { + { "n", "set scale factor", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 3}, 2, 4, .flags = FLAGS }, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(xbr); + +static uint32_t pixel_diff(uint32_t x, uint32_t y, const uint32_t *r2y) +{ +#define YMASK 0xff0000 +#define UMASK 0x00ff00 +#define VMASK 0x0000ff + + uint32_t yuv1 = r2y[x & 0xffffff]; + uint32_t yuv2 = r2y[y & 0xffffff]; + + return (abs((yuv1 & YMASK) - (yuv2 & YMASK)) >> 16) + + (abs((yuv1 & UMASK) - (yuv2 & UMASK)) >> 8) + + abs((yuv1 & VMASK) - (yuv2 & VMASK)); +} + +#define ALPHA_BLEND_128_W(dst, src) dst = ((src & LB_MASK) >> 1) + ((dst & LB_MASK) >> 1) + +#define ALPHA_BLEND_32_W(dst, src) \ + dst = ((RED_BLUE_MASK & ((dst & RED_BLUE_MASK) + ((((src & RED_BLUE_MASK) - \ + (dst & RED_BLUE_MASK))) >> 3))) | (GREEN_MASK & ((dst & GREEN_MASK) + \ + ((((src & GREEN_MASK) - (dst & GREEN_MASK))) >> 3)))) + +#define ALPHA_BLEND_64_W(dst, src) \ + dst = ((RED_BLUE_MASK & ((dst & RED_BLUE_MASK) + ((((src & RED_BLUE_MASK) - \ + (dst & RED_BLUE_MASK))) >> 2))) | (GREEN_MASK & ((dst & GREEN_MASK) + \ + ((((src & GREEN_MASK) - (dst & GREEN_MASK))) >> 2)))) + +#define ALPHA_BLEND_192_W(dst, src) \ + dst = ((RED_BLUE_MASK & ((dst & RED_BLUE_MASK) + ((((src & RED_BLUE_MASK) - \ + (dst & RED_BLUE_MASK)) * 3) >> 2))) | (GREEN_MASK & ((dst & GREEN_MASK) + \ + ((((src & GREEN_MASK) - (dst & GREEN_MASK)) * 3) >> 2)))) + +#define ALPHA_BLEND_224_W(dst, src) \ + dst = ((RED_BLUE_MASK & ((dst & RED_BLUE_MASK) + ((((src & RED_BLUE_MASK) - \ + (dst & RED_BLUE_MASK)) * 7) >> 3))) | (GREEN_MASK & ((dst & GREEN_MASK) + \ + ((((src & GREEN_MASK) - (dst & GREEN_MASK)) * 7) >> 3)))) + +#define df(A, B) pixel_diff(A, B, r2y) +#define eq(A, B) (df(A, B) < 155) + +#define FILT2(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, \ + N0, N1, N2, N3) do { \ + if (PE != PH && PE != PF) { \ + const unsigned e = df(PE,PC) + df(PE,PG) + df(PI,H5) + df(PI,F4) + (df(PH,PF)<<2); \ + const unsigned i = df(PH,PD) + df(PH,I5) + df(PF,I4) + df(PF,PB) + (df(PE,PI)<<2); \ + if (e < i && (!eq(PF,PB) && !eq(PH,PD) || eq(PE,PI) \ + && (!eq(PF,I4) && !eq(PH,I5)) \ + || eq(PE,PG) || eq(PE,PC))) { \ + const unsigned ke = df(PF,PG); \ + const unsigned ki = df(PH,PC); \ + const int left = ke<<1 <= ki && PE != PG && PD != PG; \ + const int up = ke >= ki<<1 && PE != PC && PB != PC; \ + const unsigned px = df(PE,PF) <= df(PE,PH) ? PF : PH; \ + if (left && up) { \ + ALPHA_BLEND_224_W(E[N3], px); \ + ALPHA_BLEND_64_W( E[N2], px); \ + E[N1] = E[N2]; \ + } else if (left) { \ + ALPHA_BLEND_192_W(E[N3], px); \ + ALPHA_BLEND_64_W( E[N2], px); \ + } else if (up) { \ + ALPHA_BLEND_192_W(E[N3], px); \ + ALPHA_BLEND_64_W( E[N1], px); \ + } else { /* diagonal */ \ + ALPHA_BLEND_128_W(E[N3], px); \ + } \ + } else if (e <= i) { \ + ALPHA_BLEND_128_W( E[N3], ((df(PE,PF) <= df(PE,PH)) ? PF : PH)); \ + } \ + } \ +} while (0) + +#define FILT3(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, \ + N0, N1, N2, N3, N4, N5, N6, N7, N8) do { \ + if (PE != PH && PE != PF) { \ + const unsigned e = df(PE,PC) + df(PE,PG) + df(PI,H5) + df(PI,F4) + (df(PH,PF)<<2); \ + const unsigned i = df(PH,PD) + df(PH,I5) + df(PF,I4) + df(PF,PB) + (df(PE,PI)<<2); \ + if (e < i && (!eq(PF,PB) && !eq(PF,PC) || !eq(PH,PD) && !eq(PH,PG) || eq(PE,PI) \ + && (!eq(PF,F4) && !eq(PF,I4) || !eq(PH,H5) && !eq(PH,I5)) \ + || eq(PE,PG) || eq(PE,PC))) { \ + const unsigned ke = df(PF,PG); \ + const unsigned ki = df(PH,PC); \ + const int left = ke<<1 <= ki && PE != PG && PD != PG; \ + const int up = ke >= ki<<1 && PE != PC && PB != PC; \ + const unsigned px = df(PE,PF) <= df(PE,PH) ? PF : PH; \ + if (left && up) { \ + ALPHA_BLEND_192_W(E[N7], px); \ + ALPHA_BLEND_64_W( E[N6], px); \ + E[N5] = E[N7]; \ + E[N2] = E[N6]; \ + E[N8] = px; \ + } else if (left) { \ + ALPHA_BLEND_192_W(E[N7], px); \ + ALPHA_BLEND_64_W( E[N5], px); \ + ALPHA_BLEND_64_W( E[N6], px); \ + E[N8] = px; \ + } else if (up) { \ + ALPHA_BLEND_192_W(E[N5], px); \ + ALPHA_BLEND_64_W( E[N7], px); \ + ALPHA_BLEND_64_W( E[N2], px); \ + E[N8] = px; \ + } else { /* diagonal */ \ + ALPHA_BLEND_224_W(E[N8], px); \ + ALPHA_BLEND_32_W( E[N5], px); \ + ALPHA_BLEND_32_W( E[N7], px); \ + } \ + } else if (e <= i) { \ + ALPHA_BLEND_128_W(E[N8], ((df(PE,PF) <= df(PE,PH)) ? PF : PH)); \ + } \ + } \ +} while (0) + +#define FILT4(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, \ + N15, N14, N11, N3, N7, N10, N13, N12, N9, N6, N2, N1, N5, N8, N4, N0) do { \ + if (PE != PH && PE != PF) { \ + const unsigned e = df(PE,PC) + df(PE,PG) + df(PI,H5) + df(PI,F4) + (df(PH,PF)<<2); \ + const unsigned i = df(PH,PD) + df(PH,I5) + df(PF,I4) + df(PF,PB) + (df(PE,PI)<<2); \ + if (e < i && (!eq(PF,PB) && !eq(PH,PD) || eq(PE,PI) \ + && (!eq(PF,I4) && !eq(PH,I5)) \ + || eq(PE,PG) || eq(PE,PC))) { \ + const unsigned ke = df(PF,PG); \ + const unsigned ki = df(PH,PC); \ + const int left = ke<<1 <= ki && PE != PG && PD != PG; \ + const int up = ke >= ki<<1 && PE != PC && PB != PC; \ + const unsigned px = df(PE,PF) <= df(PE,PH) ? PF : PH; \ + if (left && up) { \ + ALPHA_BLEND_192_W(E[N13], px); \ + ALPHA_BLEND_64_W( E[N12], px); \ + E[N15] = E[N14] = E[N11] = px; \ + E[N10] = E[N3] = E[N12]; \ + E[N7] = E[N13]; \ + } else if (left) { \ + ALPHA_BLEND_192_W(E[N11], px); \ + ALPHA_BLEND_192_W(E[N13], px); \ + ALPHA_BLEND_64_W( E[N10], px); \ + ALPHA_BLEND_64_W( E[N12], px); \ + E[N14] = px; \ + E[N15] = px; \ + } else if (up) { \ + ALPHA_BLEND_192_W(E[N14], px); \ + ALPHA_BLEND_192_W(E[N7 ], px); \ + ALPHA_BLEND_64_W( E[N10], px); \ + ALPHA_BLEND_64_W( E[N3 ], px); \ + E[N11] = px; \ + E[N15] = px; \ + } else { /* diagonal */ \ + ALPHA_BLEND_128_W(E[N11], px); \ + ALPHA_BLEND_128_W(E[N14], px); \ + E[N15] = px; \ + } \ + } else if (e <= i) { \ + ALPHA_BLEND_128_W( E[N15], ((df(PE,PF) <= df(PE,PH)) ? PF : PH)); \ + } \ + } \ +} while (0) + +static av_always_inline void xbr_filter(const ThreadData *td, int jobnr, int nb_jobs, int n) +{ + int x, y; + const AVFrame *input = td->in; + AVFrame *output = td->out; + const uint32_t *r2y = td->rgbtoyuv; + const int slice_start = (input->height * jobnr ) / nb_jobs; + const int slice_end = (input->height * (jobnr+1)) / nb_jobs; + const int nl = output->linesize[0] >> 2; + const int nl1 = nl + nl; + const int nl2 = nl1 + nl; + + for (y = slice_start; y < slice_end; y++) { + + uint32_t *E = (uint32_t *)(output->data[0] + y * output->linesize[0] * n); + const uint32_t *sa2 = (uint32_t *)(input->data[0] + y * input->linesize[0] - 8); /* center */ + const uint32_t *sa1 = sa2 - (input->linesize[0]>>2); /* up x1 */ + const uint32_t *sa0 = sa1 - (input->linesize[0]>>2); /* up x2 */ + const uint32_t *sa3 = sa2 + (input->linesize[0]>>2); /* down x1 */ + const uint32_t *sa4 = sa3 + (input->linesize[0]>>2); /* down x2 */ + + if (y <= 1) { + sa0 = sa1; + if (y == 0) { + sa0 = sa1 = sa2; + } + } + + if (y >= input->height - 2) { + sa4 = sa3; + if (y == input->height - 1) { + sa4 = sa3 = sa2; + } + } + + for (x = 0; x < input->width; x++) { + const uint32_t B1 = sa0[2]; + const uint32_t PB = sa1[2]; + const uint32_t PE = sa2[2]; + const uint32_t PH = sa3[2]; + const uint32_t H5 = sa4[2]; + + const int pprev = 2 - (x > 0); + const uint32_t A1 = sa0[pprev]; + const uint32_t PA = sa1[pprev]; + const uint32_t PD = sa2[pprev]; + const uint32_t PG = sa3[pprev]; + const uint32_t G5 = sa4[pprev]; + + const int pprev2 = pprev - (x > 1); + const uint32_t A0 = sa1[pprev2]; + const uint32_t D0 = sa2[pprev2]; + const uint32_t G0 = sa3[pprev2]; + + const int pnext = 3 - (x == input->width - 1); + const uint32_t C1 = sa0[pnext]; + const uint32_t PC = sa1[pnext]; + const uint32_t PF = sa2[pnext]; + const uint32_t PI = sa3[pnext]; + const uint32_t I5 = sa4[pnext]; + + const int pnext2 = pnext + 1 - (x >= input->width - 2); + const uint32_t C4 = sa1[pnext2]; + const uint32_t F4 = sa2[pnext2]; + const uint32_t I4 = sa3[pnext2]; + + if (n == 2) { + E[0] = E[1] = // 0, 1 + E[nl] = E[nl + 1] = PE; // 2, 3 + + FILT2(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, 0, 1, nl, nl+1); + FILT2(PE, PC, PF, PB, PI, PA, PH, PD, PG, I4, A1, I5, H5, A0, D0, B1, C1, F4, C4, G5, G0, nl, 0, nl+1, 1); + FILT2(PE, PA, PB, PD, PC, PG, PF, PH, PI, C1, G0, C4, F4, G5, H5, D0, A0, B1, A1, I4, I5, nl+1, nl, 1, 0); + FILT2(PE, PG, PD, PH, PA, PI, PB, PF, PC, A0, I5, A1, B1, I4, F4, H5, G5, D0, G0, C1, C4, 1, nl+1, 0, nl); + } else if (n == 3) { + E[0] = E[1] = E[2] = // 0, 1, 2 + E[nl] = E[nl+1] = E[nl+2] = // 3, 4, 5 + E[nl1] = E[nl1+1] = E[nl1+2] = PE; // 6, 7, 8 + + FILT3(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, 0, 1, 2, nl, nl+1, nl+2, nl1, nl1+1, nl1+2); + FILT3(PE, PC, PF, PB, PI, PA, PH, PD, PG, I4, A1, I5, H5, A0, D0, B1, C1, F4, C4, G5, G0, nl1, nl, 0, nl1+1, nl+1, 1, nl1+2, nl+2, 2); + FILT3(PE, PA, PB, PD, PC, PG, PF, PH, PI, C1, G0, C4, F4, G5, H5, D0, A0, B1, A1, I4, I5, nl1+2, nl1+1, nl1, nl+2, nl+1, nl, 2, 1, 0); + FILT3(PE, PG, PD, PH, PA, PI, PB, PF, PC, A0, I5, A1, B1, I4, F4, H5, G5, D0, G0, C1, C4, 2, nl+2, nl1+2, 1, nl+1, nl1+1, 0, nl, nl1); + } else if (n == 4) { + E[0] = E[1] = E[2] = E[3] = // 0, 1, 2, 3 + E[nl] = E[nl+1] = E[nl+2] = E[nl+3] = // 4, 5, 6, 7 + E[nl1] = E[nl1+1] = E[nl1+2] = E[nl1+3] = // 8, 9, 10, 11 + E[nl2] = E[nl2+1] = E[nl2+2] = E[nl2+3] = PE; // 12, 13, 14, 15 + + FILT4(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, nl2+3, nl2+2, nl1+3, 3, nl+3, nl1+2, nl2+1, nl2, nl1+1, nl+2, 2, 1, nl+1, nl1, nl, 0); + FILT4(PE, PC, PF, PB, PI, PA, PH, PD, PG, I4, A1, I5, H5, A0, D0, B1, C1, F4, C4, G5, G0, 3, nl+3, 2, 0, 1, nl+2, nl1+3, nl2+3, nl1+2, nl+1, nl, nl1, nl1+1, nl2+2, nl2+1, nl2); + FILT4(PE, PA, PB, PD, PC, PG, PF, PH, PI, C1, G0, C4, F4, G5, H5, D0, A0, B1, A1, I4, I5, 0, 1, nl, nl2, nl1, nl+1, 2, 3, nl+2, nl1+1, nl2+1, nl2+2, nl1+2, nl+3, nl1+3, nl2+3); + FILT4(PE, PG, PD, PH, PA, PI, PB, PF, PC, A0, I5, A1, B1, I4, F4, H5, G5, D0, G0, C1, C4, nl2, nl1, nl2+1, nl2+3, nl2+2, nl1+1, nl, 0, nl+1, nl1+2, nl1+3, nl+3, nl+2, 1, 2, 3); + } + + sa0 += 1; + sa1 += 1; + sa2 += 1; + sa3 += 1; + sa4 += 1; + + E += n; + } + } +} + +#define XBR_FUNC(size) \ +static int xbr##size##x(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \ +{ \ + xbr_filter(arg, jobnr, nb_jobs, size); \ + return 0; \ +} + +XBR_FUNC(2) +XBR_FUNC(3) +XBR_FUNC(4) + + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + XBRContext *xbr = ctx->priv; + AVFilterLink *inlink = ctx->inputs[0]; + + outlink->w = inlink->w * xbr->n; + outlink->h = inlink->h * xbr->n; + return 0; +} + +static int query_formats(AVFilterContext *ctx) +{ + static const enum AVPixelFormat pix_fmts[] = { + AV_PIX_FMT_0RGB32, AV_PIX_FMT_NONE, + }; + + ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *in) +{ + AVFilterContext *ctx = inlink->dst; + AVFilterLink *outlink = ctx->outputs[0]; + XBRContext *xbr = ctx->priv; + ThreadData td; + + AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h); + if (!out) { + av_frame_free(&in); + return AVERROR(ENOMEM); + } + + av_frame_copy_props(out, in); + + td.in = in; + td.out = out; + td.rgbtoyuv = xbr->rgbtoyuv; + ctx->internal->execute(ctx, xbr->func, &td, NULL, FFMIN(inlink->h, ctx->graph->nb_threads)); + + out->width = outlink->w; + out->height = outlink->h; + + av_frame_free(&in); + return ff_filter_frame(outlink, out); +} + +static int init(AVFilterContext *ctx) +{ + XBRContext *xbr = ctx->priv; + static const xbrfunc_t xbrfuncs[] = {xbr2x, xbr3x, xbr4x}; + + uint32_t c; + int bg, rg, g; + + for (bg = -255; bg < 256; bg++) { + for (rg = -255; rg < 256; rg++) { + const uint32_t u = (uint32_t)((-169*rg + 500*bg)/1000) + 128; + const uint32_t v = (uint32_t)(( 500*rg - 81*bg)/1000) + 128; + int startg = FFMAX3(-bg, -rg, 0); + int endg = FFMIN3(255-bg, 255-rg, 255); + uint32_t y = (uint32_t)(( 299*rg + 1000*startg + 114*bg)/1000); + c = bg + (rg<<16) + 0x010101 * startg; + for (g = startg; g <= endg; g++) { + xbr->rgbtoyuv[c] = ((y++) << 16) + (u << 8) + v; + c+= 0x010101; + } + } + } + + xbr->func = xbrfuncs[xbr->n - 2]; + return 0; +} + +static const AVFilterPad xbr_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = filter_frame, + }, + { NULL } +}; + +static const AVFilterPad xbr_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + }, + { NULL } +}; + +AVFilter ff_vf_xbr = { + .name = "xbr", + .description = NULL_IF_CONFIG_SMALL("Scale the input using xBR algorithm."), + .inputs = xbr_inputs, + .outputs = xbr_outputs, + .query_formats = query_formats, + .priv_size = sizeof(XBRContext), + .priv_class = &xbr_class, + .init = init, + .flags = AVFILTER_FLAG_SLICE_THREADS, +};