mpv/libmpcodecs/vf.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../config.h"
#include "../mp_msg.h"
#include "../libvo/img_format.h"
#include "../mp_image.h"
#include "vf.h"
extern vf_info_t vf_info_vo;
extern vf_info_t vf_info_crop;
extern vf_info_t vf_info_expand;
extern vf_info_t vf_info_pp;
char** vo_plugin_args=(char**) NULL;
// list of available filters:
static vf_info_t* filter_list[]={
&vf_info_crop,
&vf_info_expand,
&vf_info_pp,
// &vf_info_zoom,
// &vf_info_osd,
&vf_info_vo,
NULL
};
//============================================================================
// mpi stuff:
mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
mp_image_t* mpi=NULL;
int w2=w; //(mp_imgflag&MP_IMGFLAG_ACCEPT_STRIDE)?((w+15)&(~15)):w;
// Note: we should call libvo first to check if it supports direct rendering
// and if not, then fallback to software buffers:
switch(mp_imgtype){
case MP_IMGTYPE_EXPORT:
if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
mpi=vf->imgctx.export_images[0];
break;
case MP_IMGTYPE_STATIC:
if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
mpi=vf->imgctx.static_images[0];
break;
case MP_IMGTYPE_TEMP:
if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
mpi=vf->imgctx.temp_images[0];
break;
case MP_IMGTYPE_IPB:
if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
mpi=vf->imgctx.temp_images[0];
break;
}
case MP_IMGTYPE_IP:
if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
vf->imgctx.static_idx^=1;
break;
}
if(mpi){
mpi->type=mp_imgtype;
mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
mpi->flags|=mp_imgflag&(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_ACCEPT_WIDTH|MP_IMGFLAG_ALIGNED_STRIDE|MP_IMGFLAG_DRAW_CALLBACK);
if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
if((mpi->width!=w2 || mpi->height!=h) && !(mpi->flags&MP_IMGFLAG_DIRECT)){
mpi->width=w2;
mpi->height=h;
if(mpi->flags&MP_IMGFLAG_ALLOCATED){
// need to re-allocate buffer memory:
free(mpi->planes[0]);
mpi->flags&=~MP_IMGFLAG_ALLOCATED;
}
}
if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
// check libvo first!
if(vf->get_image) vf->get_image(vf,mpi);
if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
// non-direct and not yet allocaed image. allocate it!
mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*mpi->height/8);
if(mpi->flags&MP_IMGFLAG_PLANAR){
// YV12/I420. feel free to add other planar formats here...
if(!mpi->stride[0]) mpi->stride[0]=mpi->width;
if(!mpi->stride[1]) mpi->stride[1]=mpi->stride[2]=mpi->width/2;
if(mpi->flags&MP_IMGFLAG_SWAPPED){
// I420/IYUV (Y,U,V)
mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
mpi->planes[2]=mpi->planes[1]+(mpi->width>>1)*(mpi->height>>1);
} else {
// YV12,YVU9 (Y,V,U)
mpi->planes[2]=mpi->planes[0]+mpi->width*mpi->height;
mpi->planes[1]=mpi->planes[2]+(mpi->width>>1)*(mpi->height>>1);
}
} else {
if(!mpi->stride[0]) mpi->stride[0]=mpi->width*mpi->bpp/8;
}
mpi->flags|=MP_IMGFLAG_ALLOCATED;
}
}
if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"*** [%s] %s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
vf->info->name,
(mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
mpi->width,mpi->height,mpi->bpp,
(mpi->flags&MP_IMGFLAG_YUV)?"YUV":"RGB",
(mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
mpi->bpp*mpi->width*mpi->height/8);
mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
}
}
return mpi;
}
//============================================================================
vf_instance_t* vf_open_filter(vf_instance_t* next, char *name, char *args){
vf_instance_t* vf;
int i;
for(i=0;;i++){
if(!filter_list[i]){
mp_msg(MSGT_VFILTER,MSGL_ERR,"Couldn't find video filter '%s'\n",name);
return NULL; // no such filter!
}
if(!strcmp(filter_list[i]->name,name)) break;
}
vf=malloc(sizeof(vf_instance_t));
memset(vf,0,sizeof(vf_instance_t));
vf->info=filter_list[i];
vf->next=next;
vf->config=vf_next_config;
vf->control=vf_next_control;
vf->query_format=vf_next_query_format;
vf->put_image=vf_next_put_image;
if(vf->info->open(vf,args)>0) return vf; // Success!
free(vf);
mp_msg(MSGT_VFILTER,MSGL_ERR,"Couldn't open video filter '%s'\n",name);
return NULL;
}
//============================================================================
int vf_next_config(struct vf_instance_s* vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
return vf->next->config(vf->next,width,height,d_width,d_height,flags,outfmt);
}
int vf_next_control(struct vf_instance_s* vf, int request, void* data){
return vf->next->control(vf->next,request,data);
}
int vf_next_query_format(struct vf_instance_s* vf, unsigned int fmt){
return vf->next->query_format(vf->next,fmt);
}
void vf_next_put_image(struct vf_instance_s* vf,mp_image_t *mpi){
return vf->next->put_image(vf->next,mpi);
}
//============================================================================
vf_instance_t* append_filters(vf_instance_t* last){
vf_instance_t* vf;
if(!vo_plugin_args) return last;
while(*vo_plugin_args){
char* name=strdup(*vo_plugin_args);
char* args=strchr(name,'=');
if(args){args[0]=0;++args;}
mp_msg(MSGT_VFILTER,MSGL_INFO,"Opening video filter '%s' with args '%s'...\n",name,args);
vf=vf_open_filter(last,name,args);
if(vf) last=vf;
free(name);
++vo_plugin_args;
}
return last;
}
//============================================================================