mirror of https://github.com/mpv-player/mpv
147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../config.h"
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#include "../mp_msg.h"
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "m_option.h"
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#include "m_struct.h"
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static struct vf_priv_s {
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int crop_w,crop_h;
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int crop_x,crop_y;
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} vf_priv_dflt = {
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-1,-1,
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-1,-1
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};
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extern int opt_screen_size_x;
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extern int opt_screen_size_y;
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//===========================================================================//
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static int config(struct vf_instance_s* vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt){
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// calculate the missing parameters:
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if(vf->priv->crop_w<=0 || vf->priv->crop_w>width) vf->priv->crop_w=width;
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if(vf->priv->crop_h<=0 || vf->priv->crop_h>height) vf->priv->crop_h=height;
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if(vf->priv->crop_x<0) vf->priv->crop_x=(width-vf->priv->crop_w)/2;
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if(vf->priv->crop_y<0) vf->priv->crop_y=(height-vf->priv->crop_h)/2;
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// rounding:
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if(!IMGFMT_IS_RGB(outfmt) && !IMGFMT_IS_BGR(outfmt)){
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switch(outfmt){
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case IMGFMT_444P:
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case IMGFMT_Y800:
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case IMGFMT_Y8:
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break;
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case IMGFMT_YVU9:
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case IMGFMT_IF09:
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vf->priv->crop_y&=~3;
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case IMGFMT_411P:
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vf->priv->crop_x&=~3;
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break;
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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vf->priv->crop_y&=~1;
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default:
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vf->priv->crop_x&=~1;
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}
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}
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// check:
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if(vf->priv->crop_w+vf->priv->crop_x>width ||
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vf->priv->crop_h+vf->priv->crop_y>height){
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printf("crop: bad position/width/height - cropped area is out of the original!\n");
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return 0;
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}
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if(!opt_screen_size_x && !opt_screen_size_y){
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d_width=d_width*vf->priv->crop_w/width;
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d_height=d_height*vf->priv->crop_h/height;
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}
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return vf_next_config(vf,vf->priv->crop_w,vf->priv->crop_h,d_width,d_height,flags,outfmt);
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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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mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
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MP_IMGTYPE_EXPORT, 0,
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vf->priv->crop_w, vf->priv->crop_h);
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if(mpi->flags&MP_IMGFLAG_PLANAR){
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dmpi->planes[0]=mpi->planes[0]+
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vf->priv->crop_y*mpi->stride[0]+vf->priv->crop_x;
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dmpi->planes[1]=mpi->planes[1]+
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(vf->priv->crop_y>>mpi->chroma_y_shift)*mpi->stride[1]+(vf->priv->crop_x>>mpi->chroma_x_shift);
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dmpi->planes[2]=mpi->planes[2]+
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(vf->priv->crop_y>>mpi->chroma_y_shift)*mpi->stride[2]+(vf->priv->crop_x>>mpi->chroma_x_shift);
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dmpi->stride[1]=mpi->stride[1];
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dmpi->stride[2]=mpi->stride[2];
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} else {
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dmpi->planes[0]=mpi->planes[0]+
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vf->priv->crop_y*mpi->stride[0]+
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vf->priv->crop_x*(mpi->bpp/8);
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dmpi->planes[1]=mpi->planes[1]; // passthrough rgb8 palette
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}
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dmpi->stride[0]=mpi->stride[0];
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dmpi->width=mpi->width;
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return vf_next_put_image(vf,dmpi);
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}
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//===========================================================================//
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static int open(vf_instance_t *vf, char* args){
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vf->config=config;
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vf->put_image=put_image;
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vf->default_reqs=VFCAP_ACCEPT_STRIDE;
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if(!vf->priv) {
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vf->priv=malloc(sizeof(struct vf_priv_s));
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// TODO: parse args ->
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vf->priv->crop_x=
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vf->priv->crop_y=
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vf->priv->crop_w=
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vf->priv->crop_h=-1;
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} //if(!vf->priv)
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if(args) sscanf(args, "%d:%d:%d:%d",
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&vf->priv->crop_w,
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&vf->priv->crop_h,
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&vf->priv->crop_x,
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&vf->priv->crop_y);
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mp_msg(MSGT_VFILTER, MSGL_INFO, "Crop: %d x %d, %d ; %d\n",
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vf->priv->crop_w,
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vf->priv->crop_h,
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vf->priv->crop_x,
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vf->priv->crop_y);
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return 1;
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}
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#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
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static m_option_t vf_opts_fields[] = {
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{"w", ST_OFF(crop_w), CONF_TYPE_INT, M_OPT_MIN,0 ,0, NULL},
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{"h", ST_OFF(crop_h), CONF_TYPE_INT, M_OPT_MIN,0 ,0, NULL},
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{"x", ST_OFF(crop_x), CONF_TYPE_INT, M_OPT_MIN,-1 ,0, NULL},
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{"y", ST_OFF(crop_y), CONF_TYPE_INT, M_OPT_MIN,-1 ,0, NULL},
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{ NULL, NULL, 0, 0, 0, 0, NULL }
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};
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static m_struct_t vf_opts = {
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"crop",
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sizeof(struct vf_priv_s),
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&vf_priv_dflt,
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vf_opts_fields
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};
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vf_info_t vf_info_crop = {
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"cropping",
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"crop",
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"A'rpi",
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"",
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open,
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&vf_opts
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};
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//===========================================================================//
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