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author | arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-04-06 22:05:01 +0000 |
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committer | arpi <arpi@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-04-06 22:05:01 +0000 |
commit | e24cd4d942c0e7261709b4eaca527cfc9750c619 (patch) | |
tree | 73812111226d414f6c8516c3b19658f181a4f6b0 /libmpcodecs/vf_crop.c | |
parent | 55bafcc362e9ec4ea5883bef9e9e30469b6f7517 (diff) | |
download | mpv-e24cd4d942c0e7261709b4eaca527cfc9750c619.tar.bz2 mpv-e24cd4d942c0e7261709b4eaca527cfc9750c619.tar.xz |
video filter layer - written from scratch, but inspired a lot by Fredrik Kuivinen's patch
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5508 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libmpcodecs/vf_crop.c')
-rw-r--r-- | libmpcodecs/vf_crop.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/libmpcodecs/vf_crop.c b/libmpcodecs/vf_crop.c new file mode 100644 index 0000000000..6808e9f492 --- /dev/null +++ b/libmpcodecs/vf_crop.c @@ -0,0 +1,91 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "../config.h" +#include "../mp_msg.h" + +#include "../mp_image.h" +#include "vf.h" + +struct vf_priv_s { + int crop_w,crop_h; + int crop_x,crop_y; +}; + +//===========================================================================// + +static int config(struct vf_instance_s* vf, + int width, int height, int d_width, int d_height, + unsigned int flags, unsigned int outfmt){ + int ret; + printf("crop->config() called\n"); + // calculate the missing parameters: + if(vf->priv->crop_w<=0 || vf->priv->crop_w>width) vf->priv->crop_w=width; + if(vf->priv->crop_h<=0 || vf->priv->crop_h>height) vf->priv->crop_h=height; + if(vf->priv->crop_x<0) vf->priv->crop_x=(width-vf->priv->crop_w)/2; + if(vf->priv->crop_y<0) vf->priv->crop_y=(height-vf->priv->crop_h)/2; + // check: + if(vf->priv->crop_w+vf->priv->crop_x>width) return 0; // bad width + if(vf->priv->crop_h+vf->priv->crop_y>height) return 0; // bad height + ret=vf_next_config(vf,vf->priv->crop_w,vf->priv->crop_h,d_width,d_height,flags,outfmt); + printf("crop->config() return %d\n",ret); + return ret; +} + +static void put_image(struct vf_instance_s* vf, mp_image_t *mpi){ + mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt, + MP_IMGTYPE_EXPORT, 0, + vf->priv->crop_w, vf->priv->crop_h); + if(mpi->flags&MP_IMGFLAG_PLANAR){ + dmpi->planes[0]=mpi->planes[0]+ + vf->priv->crop_y*mpi->stride[0]+vf->priv->crop_x; + dmpi->planes[1]=mpi->planes[1]+ + (vf->priv->crop_y>>1)*mpi->stride[1]+(vf->priv->crop_x>>1); + dmpi->planes[2]=mpi->planes[2]+ + (vf->priv->crop_y>>1)*mpi->stride[2]+(vf->priv->crop_x>>1); + dmpi->stride[0]=mpi->stride[0]; + dmpi->stride[1]=mpi->stride[1]; + dmpi->stride[2]=mpi->stride[2]; + } else { + dmpi->planes[0]=mpi->planes[0]+ + vf->priv->crop_y*mpi->stride[0]+ + vf->priv->crop_x*(mpi->bpp/8); + dmpi->stride[0]=mpi->stride[0]; + } + vf_next_put_image(vf,dmpi); +} + +//===========================================================================// + +static int open(vf_instance_t *vf, char* args){ + vf->config=config; + vf->put_image=put_image; + vf->priv=malloc(sizeof(struct vf_priv_s)); + // TODO: parse args -> + vf->priv->crop_x= + vf->priv->crop_y= + vf->priv->crop_w= + vf->priv->crop_h=-1; + if(args) sscanf(args, "%d:%d:%d:%d", + &vf->priv->crop_w, + &vf->priv->crop_h, + &vf->priv->crop_x, + &vf->priv->crop_y); + printf("Crop: %d x %d, %d ; %d\n", + vf->priv->crop_w, + vf->priv->crop_h, + vf->priv->crop_x, + vf->priv->crop_y); + return 1; +} + +vf_info_t vf_info_crop = { + "cropping", + "crop", + "A'rpi", + "", + open +}; + +//===========================================================================// |