libmpcodecs/vf_flip.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 "mp_image.h"
   9 #include "vf.h"
  10
  11 #include "libvo/video_out.h"
  12
  13 //===========================================================================//
  14
  15 static int config(struct vf_instance_s* vf,
  16         int width, int height, int d_width, int d_height,
  17         unsigned int flags, unsigned int outfmt){
  18     flags&=~VOFLAG_FLIPPING; // remove the FLIP flag
  19     return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
  20 }
  21
  22 static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
  23     if(mpi->flags&MP_IMGFLAG_ACCEPT_STRIDE){
  24         // try full DR !
  25         vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
  26             mpi->type, mpi->flags, mpi->width, mpi->height);
  27         // set up mpi as a upside-down image of dmpi:
  28         mpi->planes[0]=vf->dmpi->planes[0]+
  29                     vf->dmpi->stride[0]*(vf->dmpi->height-1);
  30         mpi->stride[0]=-vf->dmpi->stride[0];
  31         if(mpi->flags&MP_IMGFLAG_PLANAR){
  32             mpi->planes[1]=vf->dmpi->planes[1]+
  33                     vf->dmpi->stride[1]*((vf->dmpi->height>>mpi->chroma_y_shift)-1);
  34             mpi->stride[1]=-vf->dmpi->stride[1];
  35             mpi->planes[2]=vf->dmpi->planes[2]+
  36                     vf->dmpi->stride[2]*((vf->dmpi->height>>mpi->chroma_y_shift)-1);
  37             mpi->stride[2]=-vf->dmpi->stride[2];
  38         }
  39         mpi->flags|=MP_IMGFLAG_DIRECT;
  40         mpi->priv=(void*)vf->dmpi;
  41     }
  42 }
  43
  44 static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
  45     if(mpi->flags&MP_IMGFLAG_DIRECT){
  46         // we've used DR, so we're ready...
  47         if(!(mpi->flags&MP_IMGFLAG_PLANAR))
  48             ((mp_image_t*)mpi->priv)->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
  49         return vf_next_put_image(vf,(mp_image_t*)mpi->priv, pts);
  50     }
  51
  52     vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
  53         MP_IMGTYPE_EXPORT, MP_IMGFLAG_ACCEPT_STRIDE,
  54         mpi->width, mpi->height);
  55
  56     // set up mpi as a upside-down image of dmpi:
  57     vf->dmpi->planes[0]=mpi->planes[0]+
  58                     mpi->stride[0]*(mpi->height-1);
  59     vf->dmpi->stride[0]=-mpi->stride[0];
  60     if(vf->dmpi->flags&MP_IMGFLAG_PLANAR){
  61         vf->dmpi->planes[1]=mpi->planes[1]+
  62             mpi->stride[1]*((mpi->height>>mpi->chroma_y_shift)-1);
  63         vf->dmpi->stride[1]=-mpi->stride[1];
  64         vf->dmpi->planes[2]=mpi->planes[2]+
  65             mpi->stride[2]*((mpi->height>>mpi->chroma_y_shift)-1);
  66         vf->dmpi->stride[2]=-mpi->stride[2];
  67     } else
  68         vf->dmpi->planes[1]=mpi->planes[1]; // passthru bgr8 palette!!!
  69
  70     return vf_next_put_image(vf,vf->dmpi, pts);
  71 }
  72
  73 //===========================================================================//
  74
  75 static int open(vf_instance_t *vf, char* args){
  76     vf->config=config;
  77     vf->get_image=get_image;
  78     vf->put_image=put_image;
  79     vf->default_reqs=VFCAP_ACCEPT_STRIDE;
  80     return 1;
  81 }
  82
  83 const vf_info_t vf_info_flip = {
  84     "flip image upside-down",
  85     "flip",
  86     "A'rpi",
  87     "",
  88     open,
  89     NULL
  90 };
  91
  92 //===========================================================================//