libmpcodecs/vf_softskip.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "config.h"
   6 #include "mp_msg.h"
   7
   8 #include "img_format.h"
   9 #include "mp_image.h"
  10 #include "vf.h"
  11
  12 struct vf_priv_s {
  13         int skipflag;
  14 };
  15
  16 static int put_image(struct vf_instance* vf, mp_image_t *mpi, double pts)
  17 {
  18         mp_image_t *dmpi;
  19
  20         if (vf->priv->skipflag)
  21                 return vf->priv->skipflag = 0;
  22
  23         dmpi = vf_get_image(vf->next, mpi->imgfmt,
  24                 MP_IMGTYPE_EXPORT, 0, mpi->width, mpi->height);
  25         vf_clone_mpi_attributes(dmpi, mpi);
  26
  27         dmpi->planes[0] = mpi->planes[0];
  28         dmpi->stride[0] = mpi->stride[0];
  29         if (dmpi->flags&MP_IMGFLAG_PLANAR) {
  30                 dmpi->planes[1] = mpi->planes[1];
  31                 dmpi->stride[1] = mpi->stride[1];
  32                 dmpi->planes[2] = mpi->planes[2];
  33                 dmpi->stride[2] = mpi->stride[2];
  34         }
  35
  36         return vf_next_put_image(vf, dmpi, pts);
  37 }
  38
  39 static int control(struct vf_instance* vf, int request, void* data)
  40 {
  41         switch (request) {
  42         case VFCTRL_SKIP_NEXT_FRAME:
  43                 vf->priv->skipflag = 1;
  44                 return CONTROL_TRUE;
  45         }
  46         return vf_next_control(vf, request, data);
  47 }
  48
  49 #if 0
  50 static int query_format(struct vf_instance* vf, unsigned int fmt)
  51 {
  52         /* FIXME - figure out which other formats work */
  53         switch (fmt) {
  54         case IMGFMT_YV12:
  55         case IMGFMT_IYUV:
  56         case IMGFMT_I420:
  57                 return vf_next_query_format(vf, fmt);
  58         }
  59         return 0;
  60 }
  61 #endif
  62
  63 static void uninit(struct vf_instance* vf)
  64 {
  65         free(vf->priv);
  66 }
  67
  68 static int open(vf_instance_t *vf, char* args)
  69 {
  70         vf->put_image = put_image;
  71         vf->control = control;
  72         vf->uninit = uninit;
  73         vf->priv = calloc(1, sizeof(struct vf_priv_s));
  74         return 1;
  75 }
  76
  77 const vf_info_t vf_info_softskip = {
  78     "soft (post-filter) frame skipping for encoding",
  79     "softskip",
  80     "Rich Felker",
  81     "",
  82     open,
  83     NULL
  84 };