mirror of https://github.com/mpv-player/mpv
vf_gradfun: remove internal implementation
This follows the (only slowly progressing) plan to replace all internal video filters with libavfilter. All what's left in vf_gradfun.c is the weird wrapper around vf_lavfi.c.
This commit is contained in:
wm4
parent
98cd2c4122
commit
b2ec5c4b66
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@ -18,31 +18,14 @@
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* Debanding algorithm (from gradfun2db by prunedtree):
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* Boxblur.
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* Foreach pixel, if it's within threshold of the blurred value, make it closer.
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* So now we have a smoothed and higher bitdepth version of all the shallow
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* gradients, while leaving detailed areas untouched.
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* Dither it back to 8bit.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <math.h>
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#include <libavutil/common.h>
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#include "config.h"
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#include "common/cpudetect.h"
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#include "video/img_format.h"
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#include "video/mp_image.h"
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#include "vf.h"
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#include "video/memcpy_pic.h"
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#include "compat/x86_cpu.h"
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#include "common/common.h"
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#include "options/m_option.h"
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#include "vf_lavfi.h"
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@ -51,13 +34,8 @@ struct vf_priv_s {
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float cfg_thresh;
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int cfg_radius;
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float cfg_size;
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int thresh;
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int radius;
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uint16_t *buf;
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void (*filter_line)(uint8_t *dst, uint8_t *src, uint16_t *dc,
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int width, int thresh, const uint16_t *dithers);
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void (*blur_line)(uint16_t *dc, uint16_t *buf, uint16_t *buf1,
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uint8_t *src, int sstride, int width);
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struct vf_lw_opts *lw_opts;
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} const vf_priv_dflt = {
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.cfg_thresh = 1.5,
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@ -65,297 +43,6 @@ struct vf_priv_s {
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.cfg_size = -1,
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};
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static const uint16_t __attribute__((aligned(16))) pw_7f[8] = {127,127,127,127,127,127,127,127};
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static const uint16_t __attribute__((aligned(16))) pw_ff[8] = {255,255,255,255,255,255,255,255};
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static const uint16_t __attribute__((aligned(16))) dither[8][8] = {
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{ 0, 96, 24,120, 6,102, 30,126 },
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{ 64, 32, 88, 56, 70, 38, 94, 62 },
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{ 16,112, 8,104, 22,118, 14,110 },
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{ 80, 48, 72, 40, 86, 54, 78, 46 },
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{ 4,100, 28,124, 2, 98, 26,122 },
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{ 68, 36, 92, 60, 66, 34, 90, 58 },
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{ 20,116, 12,108, 18,114, 10,106 },
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{ 84, 52, 76, 44, 82, 50, 74, 42 },
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};
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static void filter_line_c(uint8_t *dst, uint8_t *src, uint16_t *dc,
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int width, int thresh, const uint16_t *dithers)
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{
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int x;
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for (x=0; x<width; x++, dc+=x&1) {
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int pix = src[x]<<7;
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int delta = dc[0] - pix;
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int m = abs(delta) * thresh >> 16;
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m = FFMAX(0, 127-m);
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m = m*m*delta >> 14;
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pix += m + dithers[x&7];
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dst[x] = av_clip_uint8(pix>>7);
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}
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}
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static void blur_line_c(uint16_t *dc, uint16_t *buf, uint16_t *buf1,
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uint8_t *src, int sstride, int width)
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{
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int x, v, old;
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for (x=0; x<width; x++) {
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v = buf1[x] + src[2*x] + src[2*x+1] + src[2*x+sstride] + src[2*x+1+sstride];
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old = buf[x];
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buf[x] = v;
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dc[x] = v - old;
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}
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}
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#if HAVE_MMX2
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static void filter_line_mmx2(uint8_t *dst, uint8_t *src, uint16_t *dc,
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int width, int thresh, const uint16_t *dithers)
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{
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intptr_t x;
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if (width&3) {
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x = width&~3;
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filter_line_c(dst+x, src+x, dc+x/2, width-x, thresh, dithers);
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width = x;
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}
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x = -width;
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__asm__ volatile(
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"movd %4, %%mm5 \n"
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"pxor %%mm7, %%mm7 \n"
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"pshufw $0, %%mm5, %%mm5 \n"
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"movq %6, %%mm6 \n"
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"movq %5, %%mm4 \n"
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"1: \n"
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"movd (%2,%0), %%mm0 \n"
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"movd (%3,%0), %%mm1 \n"
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"punpcklbw %%mm7, %%mm0 \n"
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"punpcklwd %%mm1, %%mm1 \n"
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"psllw $7, %%mm0 \n"
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"pxor %%mm2, %%mm2 \n"
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"psubw %%mm0, %%mm1 \n" // delta = dc - pix
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"psubw %%mm1, %%mm2 \n"
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"pmaxsw %%mm1, %%mm2 \n"
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"pmulhuw %%mm5, %%mm2 \n" // m = abs(delta) * thresh >> 16
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"psubw %%mm6, %%mm2 \n"
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"pminsw %%mm7, %%mm2 \n" // m = -max(0, 127-m)
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"pmullw %%mm2, %%mm2 \n"
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"paddw %%mm4, %%mm0 \n" // pix += dither
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"pmulhw %%mm2, %%mm1 \n"
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"psllw $2, %%mm1 \n" // m = m*m*delta >> 14
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"paddw %%mm1, %%mm0 \n" // pix += m
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"psraw $7, %%mm0 \n"
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"packuswb %%mm0, %%mm0 \n"
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"movd %%mm0, (%1,%0) \n" // dst = clip(pix>>7)
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"add $4, %0 \n"
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"jl 1b \n"
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"emms \n"
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:"+r"(x)
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:"r"(dst+width), "r"(src+width), "r"(dc+width/2),
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"rm"(thresh), "m"(*dithers), "m"(*pw_7f)
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:"memory"
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);
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}
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#endif
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#if HAVE_SSSE3
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static void filter_line_ssse3(uint8_t *dst, uint8_t *src, uint16_t *dc,
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int width, int thresh, const uint16_t *dithers)
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{
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intptr_t x;
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if (width&7) {
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// could be 10% faster if I somehow eliminated this
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x = width&~7;
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filter_line_c(dst+x, src+x, dc+x/2, width-x, thresh, dithers);
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width = x;
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}
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x = -width;
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__asm__ volatile(
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"movd %4, %%xmm5 \n"
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"pxor %%xmm7, %%xmm7 \n"
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"pshuflw $0,%%xmm5, %%xmm5 \n"
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"movdqa %6, %%xmm6 \n"
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"punpcklqdq %%xmm5, %%xmm5 \n"
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"movdqa %5, %%xmm4 \n"
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"1: \n"
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"movq (%2,%0), %%xmm0 \n"
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"movq (%3,%0), %%xmm1 \n"
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"punpcklbw %%xmm7, %%xmm0 \n"
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"punpcklwd %%xmm1, %%xmm1 \n"
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"psllw $7, %%xmm0 \n"
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"psubw %%xmm0, %%xmm1 \n" // delta = dc - pix
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"pabsw %%xmm1, %%xmm2 \n"
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"pmulhuw %%xmm5, %%xmm2 \n" // m = abs(delta) * thresh >> 16
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"psubw %%xmm6, %%xmm2 \n"
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"pminsw %%xmm7, %%xmm2 \n" // m = -max(0, 127-m)
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"pmullw %%xmm2, %%xmm2 \n"
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"psllw $1, %%xmm2 \n"
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"paddw %%xmm4, %%xmm0 \n" // pix += dither
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"pmulhrsw %%xmm2, %%xmm1 \n" // m = m*m*delta >> 14
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"paddw %%xmm1, %%xmm0 \n" // pix += m
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"psraw $7, %%xmm0 \n"
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"packuswb %%xmm0, %%xmm0 \n"
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"movq %%xmm0, (%1,%0) \n" // dst = clip(pix>>7)
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"add $8, %0 \n"
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"jl 1b \n"
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:"+&r"(x)
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:"r"(dst+width), "r"(src+width), "r"(dc+width/2),
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"rm"(thresh), "m"(*dithers), "m"(*pw_7f)
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:"memory"
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);
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}
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#endif // HAVE_SSSE3
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#if HAVE_SSE2 && HAVE_6REGS
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#define BLURV(load)\
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intptr_t x = -2*width;\
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__asm__ volatile(\
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"movdqa %6, %%xmm7 \n"\
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"1: \n"\
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load" (%4,%0), %%xmm0 \n"\
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load" (%5,%0), %%xmm1 \n"\
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"movdqa %%xmm0, %%xmm2 \n"\
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"movdqa %%xmm1, %%xmm3 \n"\
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"psrlw $8, %%xmm0 \n"\
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"psrlw $8, %%xmm1 \n"\
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"pand %%xmm7, %%xmm2 \n"\
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"pand %%xmm7, %%xmm3 \n"\
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"paddw %%xmm1, %%xmm0 \n"\
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"paddw %%xmm3, %%xmm2 \n"\
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"paddw %%xmm2, %%xmm0 \n"\
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"paddw (%2,%0), %%xmm0 \n"\
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"movdqa (%1,%0), %%xmm1 \n"\
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"movdqa %%xmm0, (%1,%0) \n"\
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"psubw %%xmm1, %%xmm0 \n"\
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"movdqa %%xmm0, (%3,%0) \n"\
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"add $16, %0 \n"\
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"jl 1b \n"\
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:"+&r"(x)\
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:"r"(buf+width),\
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"r"(buf1+width),\
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"r"(dc+width),\
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"r"(src+width*2),\
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"r"(src+width*2+sstride),\
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"m"(*pw_ff)\
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:"memory"\
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);
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static void blur_line_sse2(uint16_t *dc, uint16_t *buf, uint16_t *buf1,
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uint8_t *src, int sstride, int width)
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{
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if (((intptr_t)src|sstride)&15) {
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BLURV("movdqu");
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} else {
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BLURV("movdqa");
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}
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}
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#endif // HAVE_6REGS && HAVE_SSE2
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static void filter_plane(struct vf_priv_s *ctx, uint8_t *dst, uint8_t *src,
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int width, int height, int dstride, int sstride, int r)
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{
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int bstride = ((width+15)&~15)/2;
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int y;
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uint32_t dc_factor = (1<<21)/(r*r);
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uint16_t *dc = ctx->buf+16;
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uint16_t *buf = ctx->buf+bstride+32;
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int thresh = ctx->thresh;
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memset(dc, 0, (bstride+16)*sizeof(*buf));
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for (y=0; y<r; y++)
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ctx->blur_line(dc, buf+y*bstride, buf+(y-1)*bstride, src+2*y*sstride, sstride, width/2);
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for (;;) {
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if (y < height-r) {
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int mod = ((y+r)/2)%r;
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uint16_t *buf0 = buf+mod*bstride;
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uint16_t *buf1 = buf+(mod?mod-1:r-1)*bstride;
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int x, v;
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ctx->blur_line(dc, buf0, buf1, src+(y+r)*sstride, sstride, width/2);
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for (x=v=0; x<r; x++)
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v += dc[x];
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for (; x<width/2; x++) {
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v += dc[x] - dc[x-r];
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dc[x-r] = v * dc_factor >> 16;
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}
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for (; x<(width+r+1)/2; x++)
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dc[x-r] = v * dc_factor >> 16;
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for (x=-r/2; x<0; x++)
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dc[x] = dc[0];
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}
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if (y == r) {
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for (y=0; y<r; y++)
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ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]);
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}
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ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]);
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if (++y >= height) break;
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ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]);
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if (++y >= height) break;
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}
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}
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static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
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{
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struct mp_image *dmpi = mpi;
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if (!mp_image_is_writeable(mpi)) {
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dmpi = vf_alloc_out_image(vf);
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mp_image_copy_attributes(dmpi, mpi);
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}
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for (int p=0; p < mpi->num_planes; p++) {
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int w = mpi->w;
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int h = mpi->h;
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int r = vf->priv->radius;
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if (p) {
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w >>= mpi->chroma_x_shift;
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h >>= mpi->chroma_y_shift;
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r = ((r>>mpi->chroma_x_shift) + (r>>mpi->chroma_y_shift)) / 2;
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r = av_clip((r+1)&~1,4,32);
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}
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if (FFMIN(w,h) > 2*r)
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filter_plane(vf->priv, dmpi->planes[p], mpi->planes[p], w, h,
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dmpi->stride[p], mpi->stride[p], r);
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else if (dmpi->planes[p] != mpi->planes[p])
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memcpy_pic(dmpi->planes[p], mpi->planes[p], w, h,
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dmpi->stride[p], mpi->stride[p]);
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}
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if (dmpi != mpi)
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talloc_free(mpi);
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return dmpi;
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}
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static int query_format(struct vf_instance *vf, unsigned int fmt)
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{
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switch (fmt){
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case IMGFMT_Y8:
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case IMGFMT_444P:
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case IMGFMT_422P:
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case IMGFMT_440P:
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case IMGFMT_420P:
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case IMGFMT_411P:
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case IMGFMT_410P:
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return vf_next_query_format(vf,fmt);
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}
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return 0;
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}
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static int config(struct vf_instance *vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt)
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{
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free(vf->priv->buf);
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vf->priv->radius = vf->priv->cfg_radius;
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if (vf->priv->cfg_size > -1) {
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vf->priv->radius = (vf->priv->cfg_size / 100.0f)
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* sqrtf(width * width + height * height);
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}
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vf->priv->radius = av_clip((vf->priv->radius+1)&~1, 4, 32);
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vf->priv->buf = av_mallocz((((width+15)&~15)*(vf->priv->radius+1)/2+32)*sizeof(uint16_t));
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return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
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}
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static void uninit(struct vf_instance *vf)
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{
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if (!vf->priv) return;
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av_free(vf->priv->buf);
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}
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static void lavfi_recreate(struct vf_instance *vf)
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{
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struct vf_priv_s *p = vf_lw_old_priv(vf);
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@ -364,17 +51,12 @@ static void lavfi_recreate(struct vf_instance *vf)
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p->radius = p->cfg_radius;
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if (p->cfg_size > -1)
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p->radius = (p->cfg_size / 100.0f) * sqrtf(w * w + h * h);
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p->radius = av_clip((p->radius+1)&~1, 4, 32);
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p->radius = MPCLAMP((p->radius+1)&~1, 4, 32);
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vf_lw_update_graph(vf, "gradfun", "%f:%d", p->cfg_thresh, p->radius);
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}
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static int vf_open(vf_instance_t *vf)
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{
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vf->filter=filter;
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vf->query_format=query_format;
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vf->config=config;
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vf->uninit=uninit;
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bool have_radius = vf->priv->cfg_radius > -1;
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bool have_size = vf->priv->cfg_size > -1;
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@ -394,24 +76,8 @@ static int vf_open(vf_instance_t *vf)
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return 1;
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}
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vf->priv->thresh = (1<<15)/av_clipf(vf->priv->cfg_thresh,0.51,255);
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vf->priv->blur_line = blur_line_c;
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vf->priv->filter_line = filter_line_c;
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#if HAVE_SSE2 && HAVE_6REGS
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if (gCpuCaps.hasSSE2)
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vf->priv->blur_line = blur_line_sse2;
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#endif
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#if HAVE_MMX2
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if (gCpuCaps.hasMMX2)
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vf->priv->filter_line = filter_line_mmx2;
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#endif
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#if HAVE_SSSE3
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if (gCpuCaps.hasSSSE3)
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vf->priv->filter_line = filter_line_ssse3;
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#endif
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return 1;
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MP_FATAL(vf, "Requires libavfilter.\n");
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return 0;
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}
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#define OPT_BASE_STRUCT struct vf_priv_s
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