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 #include "../libvo/fastmemcpy.h"
  13
  14 struct vf_priv_s {
  15         int skipflag;
  16 };
  17
  18 static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
  19 {
  20         mp_image_t *dmpi;
  21
  22         if (vf->priv->skipflag)
  23                 return vf->priv->skipflag = 0;
  24
  25         dmpi = vf_get_image(vf->next, mpi->imgfmt,
  26                 MP_IMGTYPE_EXPORT, 0, mpi->width, mpi->height);
  27
  28         dmpi->planes[0] = mpi->planes[0];
  29         dmpi->stride[0] = mpi->stride[0];
  30         if (dmpi->flags&MP_IMGFLAG_PLANAR) {
  31                 dmpi->planes[1] = mpi->planes[1];
  32                 dmpi->stride[1] = mpi->stride[1];
  33                 dmpi->planes[2] = mpi->planes[2];
  34                 dmpi->stride[2] = mpi->stride[2];
  35         }
  36
  37         return vf_next_put_image(vf, dmpi);
  38 }
  39
  40 static int control(struct vf_instance_s* vf, int request, void* data)
  41 {
  42         switch (request) {
  43         case VFCTRL_SKIP_NEXT_FRAME:
  44                 vf->priv->skipflag = 1;
  45                 return CONTROL_TRUE;
  46         }
  47         return vf_next_control(vf, request, data);
  48 }
  49
  50 static int query_format(struct vf_instance_s* 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
  62 static void uninit(struct vf_instance_s* vf)
  63 {
  64         free(vf->priv);
  65 }
  66
  67 static int open(vf_instance_t *vf, char* args)
  68 {
  69         vf->put_image = put_image;
  70         vf->control = control;
  71         vf->uninit = uninit;
  72         vf->priv = calloc(1, sizeof(struct vf_priv_s));
  73         return 1;
  74 }
  75
  76 vf_info_t vf_info_softskip = {
  77     "soft (post-filter) frame skipping for encoding",
  78     "softskip",
  79     "Rich Felker",
  80     "",
  81     open,
  82     NULL
  83 };
  84
  85