mirror of
https://github.com/mpv-player/mpv
synced 2025-03-31 15:59:34 +00:00
new version of the de-telecine filter, largely rewritten. should work
much better. please report if there are any cases where the old one worked better. the docs could also use some nicer formatting... git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9555 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rfelker
parent
31d2363926
commit
adc47d34a7
@ -2181,10 +2181,30 @@ Extracts a single field from interlaced image using stride arithmetic
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to avoid wasting cpu time. The optional argument n specifies whether
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to extract the even or the odd field (depending on whether n is even
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or odd).
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.IPs "detc"
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Experimental filter for reversing telecine process to get clean
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progressive frames. Not yet configurable and likely to change behavior
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in the future.
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.IPs "detc[=var1=value2:var2=value2:...]"
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Attempts to reverse the "telecine" process to recover a clean,
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non-interlaced stream at film framerate. This filter is still
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experimental but seems to be usable. The following arguments (see
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syntax above) may be used to control its behavior:
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.RSss
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dr: Set the frame dropping mode. 0 (default) means don't drop frames
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to maintain fixed output framerate. 1 means always drop a frame when
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there have been no drops or telecine merges in the past 5 frames. 2
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means always maintain exact 5:4 input to output frame ratio. (Note:
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use mode 1 with mencoder!)
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.br
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am: Analysis mode. Available values are 0 (fixed pattern with initial
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frame number specified by fr=#) and 1 (agressive search for telecine
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pattern). Default is 1.
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.br
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fr: Set initial frame number in sequence. 0-2 are the three clean
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progressive frames; 3 and 4 are the two interlaced frames. The
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default, -1, means "not in telecine sequence". The number specified
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here is the type for the imaginary previous frame before the movie
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starts.
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.br
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tr0, tr1, tr2, tr3: Threshold values to be used in certain modes.
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.REss
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.IPs "telecine[=start]"
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Apply 3:2 "telecine" process to increase framerate by 20%. This most
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likely will not work correctly with mplayer, but it can be used with
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@ -20,13 +20,37 @@ struct metrics {
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struct vf_priv_s {
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int frame;
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int autosync;
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int lastsync;
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int lastdrop;
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int oddfactor, noisefactor;
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int resync;
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struct metrics pm, hi, lo;
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int prevscore;
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int drop, lastdrop;
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struct metrics pm;
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int thres[4];
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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 inline void *my_memcpy_pic(void * dst, void * src, int bytesPerLine, int height, int dstStride, int srcStride)
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@ -44,27 +68,50 @@ static inline void *my_memcpy_pic(void * dst, void * src, int bytesPerLine, int
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return retval;
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}
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static unsigned int hash_pic(unsigned char *img, int w, int h, int stride)
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{
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int step = w*h/1024;
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unsigned int hash=0;
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int x=0, y;
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step -= step % 3;
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for (y=0; y<h; y++) {
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for (; x<w; x+=step) {
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hash = hash ^ (hash<<4) ^ img[x];
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}
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x -= w;
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img += stride;
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}
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return hash;
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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 i, x, even=0, odd=0, noise=0, temp=0, sum=0;
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for (i = 8; i; i--) {
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for (x = 0; x < 16; x++) {
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even += abs(new[x]-old[x]);
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odd += abs(new[x+ns]-old[x+os]);
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sum += new[x];
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noise += new[x+ns];
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temp += old[x+os];
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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 = 15; 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 = 8; 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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old += 2*os; new += 2*ns;
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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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m->noise = abs(noise-sum);
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m->temp = abs(temp-sum);
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}
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static void diff_fields(struct metrics *m, unsigned char *old, unsigned char *new, int w, int h, int os, int ns)
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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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@ -83,103 +130,143 @@ static void diff_fields(struct metrics *m, unsigned char *old, unsigned char *ne
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m->temp = mt;
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}
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static status(int f, struct metrics *m, int s)
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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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mp_msg(MSGT_VFILTER, MSGL_V, "frame %d: e=%d o=%d n=%d t=%d s=%d\n",
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f, m->even, m->odd, m->noise, m->temp, s);
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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 int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
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static 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 vf_priv_s *p = vf->priv;
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mp_image_t *dmpi;
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int i;
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struct metrics m;
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int isdup, notdup;
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int islaced, notlaced;
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int tcstart, tcend;
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int tcscore;
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if (p->frame >= 0)
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p->frame = (p->frame+1)%5;
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struct metrics m, pm;
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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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diff_fields(&m, dmpi->planes[0], mpi->planes[0],
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mpi->w, mpi->h, dmpi->stride[0], mpi->stride[0]);
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isdup = m.even < p->lo.even;
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notdup = m.even > p->hi.even;
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tcscore = (m.odd > p->lo.odd) + (m.odd > p->hi.odd) + (m.odd > 4*m.even)
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+ (m.noise > p->lo.noise) + (m.noise > p->hi.noise)
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+ (m.noise > m.temp)
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+ (m.even * p->pm.odd > m.odd * p->pm.even);
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status(p->frame, &m, tcscore);
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if (p->frame >= 0) p->frame = (p->frame+1)%5;
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vf->priv->pm = m;
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vf->priv->prevscore = tcscore;
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diff_fields(&m, old, new);
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switch (vf->priv->frame) {
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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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if (2*m.noise > m.temp) {
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if (VERYCLOSE(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.odd) && (5*m.temp < 4*m.noise))
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|| ((5*m.even < 4*m.odd) && (2*m.temp < m.noise))
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|| (m.even*m.temp < 2*m.odd*m.noise/5) /* ok? */ ) {
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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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if (isdup && (tcscore > 3)) {
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//status(p->frame, &m, tcscore);
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mp_msg(MSGT_VFILTER, MSGL_V, "heavy lacing, trying to resync with telecine!\n");
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vf->priv->frame = 3;
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return 0;
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} else if (tcscore > 5) {
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//status(p->frame, &m, tcscore);
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mp_msg(MSGT_VFILTER, MSGL_V, "laced scene change, trying to resync with telecine!\n");
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vf->priv->frame = 3;
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return 0;
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}
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break;
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return TC_PROG;
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case 3:
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if (notdup && (m.noise < p->hi.noise)) {
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//status(p->frame, &m, tcscore);
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mp_msg(MSGT_VFILTER, MSGL_V, "non-duplicate field; lost telecine tracking!\n");
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vf->priv->frame = -1;
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if ((m.even > p->thres[1]) && (5*m.even > 4*m.odd) && (5*m.temp > 4*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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break;
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return TC_IL1;
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case 4:
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if (m.temp > p->hi.temp) { /* bad match */
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//status(p->frame, &m, tcscore);
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if (m.noise < p->hi.noise) {
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mp_msg(MSGT_VFILTER, MSGL_V, "mismatched non-interlaced frame; lost telecine tracking!\n");
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vf->priv->frame = -1;
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} else {
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mp_msg(MSGT_VFILTER, MSGL_V, "mismatched interlaced frame; trying to resync!\n");
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vf->priv->frame = 3;
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}
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}
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break;
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default:
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if (!notdup && (tcscore > 2)) {
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//status(p->frame, &m, tcscore);
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mp_msg(MSGT_VFILTER, MSGL_V, "caught the telecine start!\n");
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vf->priv->frame = 3;
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}
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break;
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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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if (vf->priv->frame < 3) {
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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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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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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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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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} else if (vf->priv->frame == 3) {
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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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@ -193,28 +280,94 @@ static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
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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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p->lastdrop = 0;
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return 0;
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} else {
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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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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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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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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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if (++p->lastdrop >= 5) {
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mp_msg(MSGT_VFILTER, MSGL_V, "dropping frame!\n");
|
||||
}
|
||||
|
||||
static int do_put_image(struct vf_instance_s* vf, mp_image_t *dmpi)
|
||||
{
|
||||
struct vf_priv_s *p = vf->priv;
|
||||
int dropflag;
|
||||
|
||||
switch (p->drop) {
|
||||
case 0:
|
||||
dropflag = 0;
|
||||
break;
|
||||
case 1:
|
||||
dropflag = (++p->lastdrop >= 5);
|
||||
break;
|
||||
case 2:
|
||||
dropflag = (++p->lastdrop >= 5) && (4*p->inframes <= 5*p->outframes);
|
||||
break;
|
||||
}
|
||||
|
||||
if (dropflag) {
|
||||
mp_msg(MSGT_VFILTER, MSGL_V, "drop! [%d/%d=%g]\n",
|
||||
p->outframes, p->inframes, (float)p->outframes/p->inframes);
|
||||
p->lastdrop = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
p->outframes++;
|
||||
return vf_next_put_image(vf, dmpi);
|
||||
}
|
||||
|
||||
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
|
||||
{
|
||||
int ret=0;
|
||||
mp_image_t *dmpi;
|
||||
struct vf_priv_s *p = vf->priv;
|
||||
|
||||
p->inframes++;
|
||||
|
||||
if (p->needread) dmpi = vf_get_image(vf->next, mpi->imgfmt,
|
||||
MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
|
||||
MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE,
|
||||
mpi->width, mpi->height);
|
||||
/* FIXME: is there a good way to get rid of static type? */
|
||||
else dmpi = vf_get_image(vf->next, mpi->imgfmt,
|
||||
MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
|
||||
MP_IMGFLAG_PRESERVE, mpi->width, mpi->height);
|
||||
|
||||
switch (p->analyze(p, mpi, dmpi)) {
|
||||
case TC_DROP:
|
||||
/* Don't copy anything unless we'll need to read it. */
|
||||
if (p->needread) copy_image(dmpi, mpi, 2);
|
||||
p->lastdrop = 0;
|
||||
break;
|
||||
case TC_PROG:
|
||||
/* Copy and display the whole frame. */
|
||||
copy_image(dmpi, mpi, 2);
|
||||
ret = do_put_image(vf, dmpi);
|
||||
break;
|
||||
case TC_IL1:
|
||||
/* Only copy bottom field unless we need to read. */
|
||||
if (p->needread) copy_image(dmpi, mpi, 2);
|
||||
else copy_image(dmpi, mpi, 1);
|
||||
p->lastdrop = 0;
|
||||
break;
|
||||
case TC_IL2:
|
||||
/* Copy top field and show frame, then copy bottom if needed. */
|
||||
copy_image(dmpi, mpi, 0);
|
||||
ret = do_put_image(vf, dmpi);
|
||||
if (p->needread) copy_image(dmpi, mpi, 1);
|
||||
break;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int query_format(struct vf_instance_s* vf, unsigned int fmt)
|
||||
{
|
||||
/* FIXME - figure out which other formats work */
|
||||
@ -239,6 +392,44 @@ static void uninit(struct vf_instance_s* vf)
|
||||
free(vf->priv);
|
||||
}
|
||||
|
||||
static struct {
|
||||
char *name;
|
||||
int (*func)(struct vf_priv_s *p, mp_image_t *new, mp_image_t *old);
|
||||
int needread;
|
||||
} anal_funcs[] = {
|
||||
{ "fixed", analyze_fixed_pattern, 0 },
|
||||
{ "aggressive", analyze_aggressive, 1 },
|
||||
{ NULL, NULL, 0 }
|
||||
};
|
||||
|
||||
#define STARTVARS if (0)
|
||||
#define GETVAR(str, name, out, func) \
|
||||
else if (!strncmp((str), name "=", sizeof(name))) \
|
||||
(out) = (func)((str) + sizeof(name))
|
||||
|
||||
static void parse_var(struct vf_priv_s *p, char *var)
|
||||
{
|
||||
STARTVARS;
|
||||
GETVAR(var, "dr", p->drop, atoi);
|
||||
GETVAR(var, "t0", p->thres[0], atoi);
|
||||
GETVAR(var, "t1", p->thres[1], atoi);
|
||||
GETVAR(var, "t2", p->thres[2], atoi);
|
||||
GETVAR(var, "t3", p->thres[3], atoi);
|
||||
GETVAR(var, "fr", p->frame, atoi);
|
||||
GETVAR(var, "am", p->mode, atoi);
|
||||
}
|
||||
|
||||
static void parse_args(struct vf_priv_s *p, char *args)
|
||||
{
|
||||
char *next, *orig;
|
||||
for (args=orig=strdup(args); args; args=next) {
|
||||
next = strchr(args, ':');
|
||||
if (next) *next++ = 0;
|
||||
parse_var(p, args);
|
||||
}
|
||||
free(orig);
|
||||
}
|
||||
|
||||
static int open(vf_instance_t *vf, char* args)
|
||||
{
|
||||
struct vf_priv_s *p;
|
||||
@ -248,19 +439,16 @@ static int open(vf_instance_t *vf, char* args)
|
||||
vf->uninit = uninit;
|
||||
vf->default_reqs = VFCAP_ACCEPT_STRIDE;
|
||||
vf->priv = p = calloc(1, sizeof(struct vf_priv_s));
|
||||
if (args) sscanf(args, "%d:%d", &vf->priv->frame, &vf->priv->autosync);
|
||||
p->frame = -1;
|
||||
p->lastsync = 10;
|
||||
p->lo.even = 1760;
|
||||
p->hi.even = 2880;
|
||||
p->lo.odd = 2560;
|
||||
p->hi.odd = 10240;
|
||||
p->lo.noise = 4480;
|
||||
p->hi.noise = 10240;
|
||||
p->lo.temp = 6400;
|
||||
p->hi.temp = 12800;
|
||||
vf->priv->oddfactor = 3;
|
||||
vf->priv->noisefactor = 6;
|
||||
p->thres[0] = 1760;
|
||||
p->thres[1] = 2880;
|
||||
p->thres[2] = 10000;
|
||||
p->thres[3] = 10000;
|
||||
p->drop = 0;
|
||||
p->mode = 1;
|
||||
if (args) parse_args(p, args);
|
||||
p->analyze = anal_funcs[p->mode].func;
|
||||
p->needread = anal_funcs[p->mode].needread;
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user