mirror of
https://github.com/mpv-player/mpv
synced 2024-12-20 22:02:59 +00:00
b95c80ca86
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25249 b3059339-0415-0410-9bf9-f77b7e298cf2
438 lines
11 KiB
C
438 lines
11 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "libvo/fastmemcpy.h"
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struct metrics {
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int even;
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int odd;
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int noise;
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int temp;
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};
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struct vf_priv_s {
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int frame;
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int drop, lastdrop;
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struct metrics pm;
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int thres[5];
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int inframes, outframes;
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int mode;
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int (*analyze)(struct vf_priv_s *, mp_image_t *, mp_image_t *);
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int needread;
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};
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#define COMPE(a,b,e) (abs((a)-(b)) < (((a)+(b))>>(e)))
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#define COMPARABLE(a,b) COMPE((a),(b),2)
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#define VERYCLOSE(a,b) COMPE((a),(b),3)
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#define OUTER_TC_NBHD(s) ( \
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COMPARABLE((s)[-1].m.even,(s)[-1].m.odd) && \
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COMPARABLE((s)[1].m.even,(s)[0].m.odd) && \
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COMPARABLE((s)[2].m.even,(s)[1].m.odd) && \
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COMPARABLE((s)[-1].m.noise,(s)[0].m.temp) && \
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COMPARABLE((s)[2].m.noise,(s)[2].m.temp) )
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#define INNER_TC_NBHD(s,l,h) ( \
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COMPARABLE((s)[0].m.even,(l)) && \
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COMPARABLE((s)[2].m.odd,(l)) && ( \
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COMPARABLE((s)[0].m.noise,(h)) || \
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COMPARABLE((s)[1].m.noise,(h)) ) )
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enum {
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TC_DROP,
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TC_PROG,
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TC_IL1,
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TC_IL2
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};
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static void block_diffs(struct metrics *m, unsigned char *old, unsigned char *new, int os, int ns)
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{
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int x, y, even=0, odd=0, noise, temp;
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unsigned char *oldp, *newp;
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m->noise = m->temp = 0;
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for (x = 8; x; x--) {
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oldp = old++;
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newp = new++;
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noise = temp = 0;
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for (y = 4; y; y--) {
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even += abs(newp[0]-oldp[0]);
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odd += abs(newp[ns]-oldp[os]);
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noise += newp[ns]-newp[0];
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temp += oldp[os]-newp[0];
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oldp += os<<1;
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newp += ns<<1;
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}
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m->noise += abs(noise);
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m->temp += abs(temp);
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}
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m->even = even;
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m->odd = odd;
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}
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static void diff_planes(struct metrics *m, unsigned char *old, unsigned char *new, int w, int h, int os, int ns)
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{
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int x, y, me=0, mo=0, mn=0, mt=0;
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struct metrics l;
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for (y = 0; y < h-7; y += 8) {
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for (x = 0; x < w-7; x += 8) {
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block_diffs(&l, old+x+y*os, new+x+y*ns, os, ns);
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if (l.even > me) me = l.even;
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if (l.odd > mo) mo = l.odd;
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if (l.noise > mn) mn = l.noise;
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if (l.temp > mt) mt = l.temp;
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}
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}
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m->even = me;
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m->odd = mo;
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m->noise = mn;
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m->temp = mt;
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}
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static void diff_fields(struct metrics *metr, mp_image_t *old, mp_image_t *new)
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{
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struct metrics m, mu, mv;
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diff_planes(&m, old->planes[0], new->planes[0],
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new->w, new->h, old->stride[0], new->stride[0]);
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if (new->flags & MP_IMGFLAG_PLANAR) {
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diff_planes(&mu, old->planes[1], new->planes[1],
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new->chroma_width, new->chroma_height,
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old->stride[1], new->stride[1]);
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diff_planes(&mv, old->planes[2], new->planes[2],
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new->chroma_width, new->chroma_height,
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old->stride[2], new->stride[2]);
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if (mu.even > m.even) m.even = mu.even;
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if (mu.odd > m.odd) m.odd = mu.odd;
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if (mu.noise > m.noise) m.noise = mu.noise;
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if (mu.temp > m.temp) m.temp = mu.temp;
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if (mv.even > m.even) m.even = mv.even;
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if (mv.odd > m.odd) m.odd = mv.odd;
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if (mv.noise > m.noise) m.noise = mv.noise;
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if (mv.temp > m.temp) m.temp = mv.temp;
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}
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*metr = m;
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}
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static void status(int f, struct metrics *m)
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{
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mp_msg(MSGT_VFILTER, MSGL_V, "frame %d: e=%d o=%d n=%d t=%d\n",
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f, m->even, m->odd, m->noise, m->temp);
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}
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static int analyze_fixed_pattern(struct vf_priv_s *p, mp_image_t *new, mp_image_t *old)
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{
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if (p->frame >= 0) p->frame = (p->frame+1)%5;
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mp_msg(MSGT_VFILTER, MSGL_V, "frame %d\n", p->frame);
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switch (p->frame) {
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case -1: case 0: case 1: case 2:
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return TC_PROG;
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case 3:
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return TC_IL1;
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case 4:
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return TC_IL2;
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}
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return 0;
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}
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static int analyze_aggressive(struct vf_priv_s *p, mp_image_t *new, mp_image_t *old)
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{
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struct metrics m, pm;
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if (p->frame >= 0) p->frame = (p->frame+1)%5;
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diff_fields(&m, old, new);
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status(p->frame, &m);
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pm = p->pm;
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p->pm = m;
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if (p->frame == 4) {
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/* We need to break at scene changes, but is this a valid test? */
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if ((m.even > p->thres[2]) && (m.odd > p->thres[2]) && (m.temp > p->thres[3])
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&& (m.temp > 5*pm.temp) && (m.temp*2 > m.noise)) {
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mp_msg(MSGT_VFILTER, MSGL_V, "scene change breaking telecine!\n");
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p->frame = -1;
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return TC_DROP;
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}
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/* Thres. is to compensate for quantization errors when noise is low */
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if (m.noise - m.temp > -p->thres[4]) {
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if (COMPARABLE(m.even, pm.odd)) {
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//mp_msg(MSGT_VFILTER, MSGL_V, "confirmed field match!\n");
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return TC_IL2;
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} else if ((m.even < p->thres[0]) && (m.odd < p->thres[0]) && VERYCLOSE(m.even, m.odd)
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&& VERYCLOSE(m.noise,m.temp) && VERYCLOSE(m.noise,pm.noise)) {
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mp_msg(MSGT_VFILTER, MSGL_V, "interlaced frame appears in duplicate!!!\n");
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p->pm = pm; /* hack :) */
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p->frame = 3;
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return TC_IL1;
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}
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} else {
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mp_msg(MSGT_VFILTER, MSGL_V, "mismatched telecine fields!\n");
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p->frame = -1;
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}
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}
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if (2*m.even*m.temp < m.odd*m.noise) {
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mp_msg(MSGT_VFILTER, MSGL_V, "caught telecine sync!\n");
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p->frame = 3;
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return TC_IL1;
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}
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if (p->frame < 3) {
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if (m.noise > p->thres[3]) {
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if (m.noise > 2*m.temp) {
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mp_msg(MSGT_VFILTER, MSGL_V, "merging fields out of sequence!\n");
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return TC_IL2;
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}
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if ((m.noise > 2*pm.noise) && (m.even > p->thres[2]) && (m.odd > p->thres[2])) {
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mp_msg(MSGT_VFILTER, MSGL_V, "dropping horrible interlaced frame!\n");
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return TC_DROP;
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}
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}
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}
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switch (p->frame) {
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case -1:
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if (4*m.noise > 5*m.temp) {
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mp_msg(MSGT_VFILTER, MSGL_V, "merging fields out of sequence!\n");
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return TC_IL2;
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}
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case 0:
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case 1:
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case 2:
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return TC_PROG;
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case 3:
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if ((m.even > p->thres[1]) && (m.even > m.odd) && (m.temp > m.noise)) {
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mp_msg(MSGT_VFILTER, MSGL_V, "lost telecine tracking!\n");
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p->frame = -1;
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return TC_PROG;
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}
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return TC_IL1;
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case 4:
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return TC_IL2;
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}
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return 0;
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}
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static void copy_image(mp_image_t *dmpi, mp_image_t *mpi, int field)
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{
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switch (field) {
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case 0:
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my_memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h/2,
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dmpi->stride[0]*2, mpi->stride[0]*2);
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if (mpi->flags & MP_IMGFLAG_PLANAR) {
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my_memcpy_pic(dmpi->planes[1], mpi->planes[1],
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mpi->chroma_width, mpi->chroma_height/2,
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dmpi->stride[1]*2, mpi->stride[1]*2);
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my_memcpy_pic(dmpi->planes[2], mpi->planes[2],
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mpi->chroma_width, mpi->chroma_height/2,
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dmpi->stride[2]*2, mpi->stride[2]*2);
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}
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break;
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case 1:
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my_memcpy_pic(dmpi->planes[0]+dmpi->stride[0],
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mpi->planes[0]+mpi->stride[0], mpi->w, mpi->h/2,
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dmpi->stride[0]*2, mpi->stride[0]*2);
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if (mpi->flags & MP_IMGFLAG_PLANAR) {
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my_memcpy_pic(dmpi->planes[1]+dmpi->stride[1],
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mpi->planes[1]+mpi->stride[1],
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mpi->chroma_width, mpi->chroma_height/2,
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dmpi->stride[1]*2, mpi->stride[1]*2);
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my_memcpy_pic(dmpi->planes[2]+dmpi->stride[2],
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mpi->planes[2]+mpi->stride[2],
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mpi->chroma_width, mpi->chroma_height/2,
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dmpi->stride[2]*2, mpi->stride[2]*2);
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}
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break;
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case 2:
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memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h,
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dmpi->stride[0], mpi->stride[0]);
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if (mpi->flags & MP_IMGFLAG_PLANAR) {
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memcpy_pic(dmpi->planes[1], mpi->planes[1],
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mpi->chroma_width, mpi->chroma_height,
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dmpi->stride[1], mpi->stride[1]);
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memcpy_pic(dmpi->planes[2], mpi->planes[2],
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mpi->chroma_width, mpi->chroma_height,
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dmpi->stride[2], mpi->stride[2]);
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}
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break;
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}
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}
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static int do_put_image(struct vf_instance_s* vf, mp_image_t *dmpi)
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{
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struct vf_priv_s *p = vf->priv;
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int dropflag;
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switch (p->drop) {
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case 0:
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dropflag = 0;
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break;
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case 1:
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dropflag = (++p->lastdrop >= 5);
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break;
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case 2:
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dropflag = (++p->lastdrop >= 5) && (4*p->inframes <= 5*p->outframes);
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break;
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}
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if (dropflag) {
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mp_msg(MSGT_VFILTER, MSGL_V, "drop! [%d/%d=%g]\n",
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p->outframes, p->inframes, (float)p->outframes/p->inframes);
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p->lastdrop = 0;
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return 0;
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}
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p->outframes++;
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return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
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}
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static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts)
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{
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int ret=0;
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mp_image_t *dmpi;
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struct vf_priv_s *p = vf->priv;
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p->inframes++;
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if (p->needread) dmpi = vf_get_image(vf->next, mpi->imgfmt,
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MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
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MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE,
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mpi->width, mpi->height);
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/* FIXME: is there a good way to get rid of static type? */
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else dmpi = vf_get_image(vf->next, mpi->imgfmt,
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MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
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MP_IMGFLAG_PRESERVE, mpi->width, mpi->height);
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switch (p->analyze(p, mpi, dmpi)) {
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case TC_DROP:
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/* Don't copy anything unless we'll need to read it. */
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if (p->needread) copy_image(dmpi, mpi, 2);
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p->lastdrop = 0;
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break;
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case TC_PROG:
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/* Copy and display the whole frame. */
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copy_image(dmpi, mpi, 2);
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ret = do_put_image(vf, dmpi);
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break;
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case TC_IL1:
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/* Only copy bottom field unless we need to read. */
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if (p->needread) copy_image(dmpi, mpi, 2);
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else copy_image(dmpi, mpi, 1);
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p->lastdrop = 0;
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break;
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case TC_IL2:
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/* Copy top field and show frame, then copy bottom if needed. */
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copy_image(dmpi, mpi, 0);
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ret = do_put_image(vf, dmpi);
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if (p->needread) copy_image(dmpi, mpi, 1);
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break;
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}
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return ret;
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}
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static int query_format(struct vf_instance_s* vf, unsigned int fmt)
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{
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/* FIXME - figure out which other formats work */
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switch (fmt) {
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case IMGFMT_YV12:
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case IMGFMT_IYUV:
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case IMGFMT_I420:
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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_s* 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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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_s* vf)
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{
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free(vf->priv);
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}
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static struct {
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char *name;
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int (*func)(struct vf_priv_s *p, mp_image_t *new, mp_image_t *old);
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int needread;
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} anal_funcs[] = {
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{ "fixed", analyze_fixed_pattern, 0 },
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{ "aggressive", analyze_aggressive, 1 },
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{ NULL, NULL, 0 }
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};
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#define STARTVARS if (0)
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#define GETVAR(str, name, out, func) \
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else if (!strncmp((str), name "=", sizeof(name))) \
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(out) = (func)((str) + sizeof(name))
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static void parse_var(struct vf_priv_s *p, char *var)
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{
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STARTVARS;
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GETVAR(var, "dr", p->drop, atoi);
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GETVAR(var, "t0", p->thres[0], atoi);
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GETVAR(var, "t1", p->thres[1], atoi);
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GETVAR(var, "t2", p->thres[2], atoi);
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GETVAR(var, "t3", p->thres[3], atoi);
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GETVAR(var, "t4", p->thres[4], atoi);
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GETVAR(var, "fr", p->frame, atoi);
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GETVAR(var, "am", p->mode, atoi);
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}
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static void parse_args(struct vf_priv_s *p, char *args)
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{
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char *next, *orig;
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for (args=orig=strdup(args); args; args=next) {
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next = strchr(args, ':');
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if (next) *next++ = 0;
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parse_var(p, args);
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}
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free(orig);
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}
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static int open(vf_instance_t *vf, char* args)
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{
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struct vf_priv_s *p;
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vf->config = config;
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vf->put_image = put_image;
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vf->query_format = query_format;
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vf->uninit = uninit;
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vf->default_reqs = VFCAP_ACCEPT_STRIDE;
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vf->priv = p = calloc(1, sizeof(struct vf_priv_s));
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p->frame = -1;
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p->thres[0] = 440;
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p->thres[1] = 720;
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p->thres[2] = 2500;
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p->thres[3] = 2500;
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p->thres[4] = 800;
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p->drop = 0;
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p->mode = 1;
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if (args) parse_args(p, args);
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p->analyze = anal_funcs[p->mode].func;
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p->needread = anal_funcs[p->mode].needread;
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return 1;
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}
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const vf_info_t vf_info_detc = {
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"de-telecine filter",
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"detc",
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"Rich Felker",
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"",
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open,
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NULL
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};
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