libmpcodecs/vf.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23 #include "config.h"
  24 #if HAVE_MALLOC_H
  25 #include <malloc.h>
  26 #endif
  27
  28 #ifdef MP_DEBUG
  29 #include <assert.h>
  30 #endif
  31
  32 #include "mp_msg.h"
  33 #include "help_mp.h"
  34 #include "m_option.h"
  35 #include "m_struct.h"
  36
  37
  38 #include "img_format.h"
  39 #include "mp_image.h"
  40 #include "vf.h"
  41
  42 #include "libvo/fastmemcpy.h"
  43
  44 extern const vf_info_t vf_info_vo;
  45 extern const vf_info_t vf_info_rectangle;
  46 extern const vf_info_t vf_info_bmovl;
  47 extern const vf_info_t vf_info_crop;
  48 extern const vf_info_t vf_info_expand;
  49 extern const vf_info_t vf_info_pp;
  50 extern const vf_info_t vf_info_scale;
  51 extern const vf_info_t vf_info_format;
  52 extern const vf_info_t vf_info_noformat;
  53 extern const vf_info_t vf_info_yuy2;
  54 extern const vf_info_t vf_info_flip;
  55 extern const vf_info_t vf_info_rgb2bgr;
  56 extern const vf_info_t vf_info_rotate;
  57 extern const vf_info_t vf_info_mirror;
  58 extern const vf_info_t vf_info_palette;
  59 extern const vf_info_t vf_info_lavc;
  60 extern const vf_info_t vf_info_zrmjpeg;
  61 extern const vf_info_t vf_info_dvbscale;
  62 extern const vf_info_t vf_info_cropdetect;
  63 extern const vf_info_t vf_info_test;
  64 extern const vf_info_t vf_info_noise;
  65 extern const vf_info_t vf_info_yvu9;
  66 extern const vf_info_t vf_info_lavcdeint;
  67 extern const vf_info_t vf_info_eq;
  68 extern const vf_info_t vf_info_eq2;
  69 extern const vf_info_t vf_info_gradfun;
  70 extern const vf_info_t vf_info_halfpack;
  71 extern const vf_info_t vf_info_dint;
  72 extern const vf_info_t vf_info_1bpp;
  73 extern const vf_info_t vf_info_2xsai;
  74 extern const vf_info_t vf_info_unsharp;
  75 extern const vf_info_t vf_info_swapuv;
  76 extern const vf_info_t vf_info_il;
  77 extern const vf_info_t vf_info_fil;
  78 extern const vf_info_t vf_info_boxblur;
  79 extern const vf_info_t vf_info_sab;
  80 extern const vf_info_t vf_info_smartblur;
  81 extern const vf_info_t vf_info_perspective;
  82 extern const vf_info_t vf_info_down3dright;
  83 extern const vf_info_t vf_info_field;
  84 extern const vf_info_t vf_info_denoise3d;
  85 extern const vf_info_t vf_info_hqdn3d;
  86 extern const vf_info_t vf_info_detc;
  87 extern const vf_info_t vf_info_telecine;
  88 extern const vf_info_t vf_info_tinterlace;
  89 extern const vf_info_t vf_info_tfields;
  90 extern const vf_info_t vf_info_ivtc;
  91 extern const vf_info_t vf_info_ilpack;
  92 extern const vf_info_t vf_info_dsize;
  93 extern const vf_info_t vf_info_decimate;
  94 extern const vf_info_t vf_info_softpulldown;
  95 extern const vf_info_t vf_info_pullup;
  96 extern const vf_info_t vf_info_filmdint;
  97 extern const vf_info_t vf_info_framestep;
  98 extern const vf_info_t vf_info_tile;
  99 extern const vf_info_t vf_info_delogo;
 100 extern const vf_info_t vf_info_remove_logo;
 101 extern const vf_info_t vf_info_hue;
 102 extern const vf_info_t vf_info_spp;
 103 extern const vf_info_t vf_info_uspp;
 104 extern const vf_info_t vf_info_fspp;
 105 extern const vf_info_t vf_info_pp7;
 106 extern const vf_info_t vf_info_yuvcsp;
 107 extern const vf_info_t vf_info_kerndeint;
 108 extern const vf_info_t vf_info_rgbtest;
 109 extern const vf_info_t vf_info_qp;
 110 extern const vf_info_t vf_info_phase;
 111 extern const vf_info_t vf_info_divtc;
 112 extern const vf_info_t vf_info_harddup;
 113 extern const vf_info_t vf_info_softskip;
 114 extern const vf_info_t vf_info_screenshot;
 115 extern const vf_info_t vf_info_ass;
 116 extern const vf_info_t vf_info_mcdeint;
 117 extern const vf_info_t vf_info_yadif;
 118 extern const vf_info_t vf_info_blackframe;
 119 extern const vf_info_t vf_info_geq;
 120 extern const vf_info_t vf_info_ow;
 121
 122 // list of available filters:
 123 static const vf_info_t* const filter_list[]={
 124     &vf_info_rectangle,
 125 #ifdef HAVE_POSIX_SELECT
 126     &vf_info_bmovl,
 127 #endif
 128     &vf_info_crop,
 129     &vf_info_expand,
 130 #ifdef CONFIG_LIBPOSTPROC
 131     &vf_info_pp,
 132 #endif
 133     &vf_info_scale,
 134 //    &vf_info_osd,
 135     &vf_info_vo,
 136     &vf_info_format,
 137     &vf_info_noformat,
 138     &vf_info_yuy2,
 139     &vf_info_flip,
 140     &vf_info_rgb2bgr,
 141     &vf_info_rotate,
 142     &vf_info_mirror,
 143     &vf_info_palette,
 144     &vf_info_pp7,
 145 #ifdef CONFIG_LIBAVCODEC
 146     &vf_info_lavc,
 147     &vf_info_lavcdeint,
 148     &vf_info_screenshot,
 149 #endif
 150 #ifdef CONFIG_ZR
 151     &vf_info_zrmjpeg,
 152 #endif
 153     &vf_info_dvbscale,
 154     &vf_info_cropdetect,
 155     &vf_info_test,
 156     &vf_info_noise,
 157     &vf_info_yvu9,
 158     &vf_info_eq,
 159     &vf_info_eq2,
 160     &vf_info_gradfun,
 161     &vf_info_halfpack,
 162     &vf_info_dint,
 163     &vf_info_1bpp,
 164     &vf_info_2xsai,
 165     &vf_info_unsharp,
 166     &vf_info_swapuv,
 167     &vf_info_il,
 168     &vf_info_fil,
 169     &vf_info_boxblur,
 170     &vf_info_sab,
 171     &vf_info_smartblur,
 172     &vf_info_perspective,
 173     &vf_info_down3dright,
 174     &vf_info_field,
 175     &vf_info_denoise3d,
 176     &vf_info_hqdn3d,
 177     &vf_info_detc,
 178     &vf_info_telecine,
 179     &vf_info_tinterlace,
 180     &vf_info_tfields,
 181     &vf_info_ivtc,
 182     &vf_info_ilpack,
 183     &vf_info_dsize,
 184     &vf_info_decimate,
 185     &vf_info_softpulldown,
 186     &vf_info_pullup,
 187     &vf_info_filmdint,
 188     &vf_info_framestep,
 189     &vf_info_tile,
 190     &vf_info_delogo,
 191     &vf_info_remove_logo,
 192     &vf_info_hue,
 193 #ifdef CONFIG_LIBAVCODEC_A
 194     &vf_info_spp,
 195     &vf_info_uspp,
 196     &vf_info_fspp,
 197     &vf_info_qp,
 198     &vf_info_mcdeint,
 199     &vf_info_geq,
 200 #endif
 201     &vf_info_yuvcsp,
 202     &vf_info_kerndeint,
 203     &vf_info_rgbtest,
 204     &vf_info_phase,
 205     &vf_info_divtc,
 206     &vf_info_harddup,
 207     &vf_info_softskip,
 208 #ifdef CONFIG_ASS
 209     &vf_info_ass,
 210 #endif
 211     &vf_info_yadif,
 212     &vf_info_blackframe,
 213     &vf_info_ow,
 214     NULL
 215 };
 216
 217 // For the vf option
 218 m_obj_settings_t* vf_settings = NULL;
 219 const m_obj_list_t vf_obj_list = {
 220   (void**)filter_list,
 221   M_ST_OFF(vf_info_t,name),
 222   M_ST_OFF(vf_info_t,info),
 223   M_ST_OFF(vf_info_t,opts)
 224 };
 225
 226 //============================================================================
 227 // mpi stuff:
 228
 229 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 230     int y;
 231     if(mpi->flags&MP_IMGFLAG_PLANAR){
 232         y0&=~1;h+=h&1;
 233         if(x0==0 && w==mpi->width){
 234             // full width clear:
 235             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 236             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 237             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 238         } else
 239         for(y=y0;y<y0+h;y+=2){
 240             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 241             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 242             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 243             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 244         }
 245         return;
 246     }
 247     // packed:
 248     for(y=y0;y<y0+h;y++){
 249         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 250         if(mpi->flags&MP_IMGFLAG_YUV){
 251             unsigned int* p=(unsigned int*) dst;
 252             int size=(mpi->bpp>>3)*w/4;
 253             int i;
 254 #if HAVE_BIGENDIAN
 255 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 256 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 257 #else
 258 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 259 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 260 #endif
 261             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 262                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 263                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 264             } else {
 265                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 266                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 267             }
 268         } else
 269             memset(dst,0,(mpi->bpp>>3)*w);
 270     }
 271 }
 272
 273 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 274   mp_image_t* mpi=NULL;
 275   int w2;
 276   int number = mp_imgtype >> 16;
 277
 278 #ifdef MP_DEBUG
 279   assert(w == -1 || w >= vf->w);
 280   assert(h == -1 || h >= vf->h);
 281   assert(vf->w > 0);
 282   assert(vf->h > 0);
 283 #endif
 284
 285 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 286
 287   if (w == -1) w = vf->w;
 288   if (h == -1) h = vf->h;
 289
 290   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 291
 292   if(vf->put_image==vf_next_put_image){
 293       // passthru mode, if the filter uses the fallback/default put_image() code
 294       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 295   }
 296
 297   // Note: we should call libvo first to check if it supports direct rendering
 298   // and if not, then fallback to software buffers:
 299   switch(mp_imgtype & 0xff){
 300   case MP_IMGTYPE_EXPORT:
 301     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 302     mpi=vf->imgctx.export_images[0];
 303     break;
 304   case MP_IMGTYPE_STATIC:
 305     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 306     mpi=vf->imgctx.static_images[0];
 307     break;
 308   case MP_IMGTYPE_TEMP:
 309     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 310     mpi=vf->imgctx.temp_images[0];
 311     break;
 312   case MP_IMGTYPE_IPB:
 313     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 314       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 315       mpi=vf->imgctx.temp_images[0];
 316       break;
 317     }
 318   case MP_IMGTYPE_IP:
 319     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 320     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 321     vf->imgctx.static_idx^=1;
 322     break;
 323   case MP_IMGTYPE_NUMBERED:
 324     if (number == -1) {
 325       int i;
 326       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 327         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 328           break;
 329       number = i;
 330     }
 331     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 332     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 333     mpi = vf->imgctx.numbered_images[number];
 334     mpi->number = number;
 335     break;
 336   }
 337   if(mpi){
 338     mpi->type=mp_imgtype;
 339     mpi->w=vf->w; mpi->h=vf->h;
 340     // keep buffer allocation status & color flags only:
 341 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 342     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 343     // accept restrictions, draw_slice and palette flags only:
 344     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK|MP_IMGFLAG_RGB_PALETTE);
 345     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 346     if(mpi->width!=w2 || mpi->height!=h){
 347 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 348         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 349             if(mpi->width<w2 || mpi->height<h){
 350                 // need to re-allocate buffer memory:
 351                 free(mpi->planes[0]);
 352                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 353                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 354             }
 355 //      } else {
 356         } {
 357             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 358             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 359         }
 360     }
 361     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 362     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 363
 364         // check libvo first!
 365         if(vf->get_image) vf->get_image(vf,mpi);
 366
 367         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 368           // non-direct and not yet allocated image. allocate it!
 369           if (!mpi->bpp) { // no way we can allocate this
 370               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 371                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 372               return NULL;
 373           }
 374
 375           // check if codec prefer aligned stride:
 376           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 377               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 378                          mpi->flags&MP_IMGFLAG_YUV) ?
 379                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 380               w2=((w+align)&(~align));
 381               if(mpi->width!=w2){
 382                   // we have to change width... check if we CAN co it:
 383                   int flags=vf->query_format(vf,outfmt); // should not fail
 384                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 385 //                printf("query -> 0x%X    \n",flags);
 386                   if(flags&VFCAP_ACCEPT_STRIDE){
 387                       mpi->width=w2;
 388                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 389                   }
 390               }
 391           }
 392
 393           mp_image_alloc_planes(mpi);
 394 //        printf("clearing img!\n");
 395           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 396         }
 397     }
 398     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 399         if(vf->start_slice) vf->start_slice(vf,mpi);
 400     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 401             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 402                   vf->info->name,
 403                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 404                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 405                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 406                   mpi->width,mpi->height,mpi->bpp,
 407                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 408                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 409                   mpi->bpp*mpi->width*mpi->height/8);
 410             mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"(imgfmt: %x, planes: %p,%p,%p strides: %d,%d,%d, chroma: %dx%d, shift: h:%d,v:%d)\n",
 411                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 412                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 413                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 414             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 415     }
 416
 417   mpi->qscale = NULL;
 418   }
 419   mpi->usage_count++;
 420 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 421 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 422 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 423   return mpi;
 424 }
 425
 426 //============================================================================
 427
 428 // By default vf doesn't accept MPEGPES
 429 static int vf_default_query_format(struct vf_instance_s* vf, unsigned int fmt){
 430   if(fmt == IMGFMT_MPEGPES) return 0;
 431   return vf_next_query_format(vf,fmt);
 432 }
 433
 434 vf_instance_t* vf_open_plugin(const vf_info_t* const* filter_list, vf_instance_t* next, const char *name, char **args){
 435     vf_instance_t* vf;
 436     int i;
 437     for(i=0;;i++){
 438         if(!filter_list[i]){
 439             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotFindVideoFilter,name);
 440             return NULL; // no such filter!
 441         }
 442         if(!strcmp(filter_list[i]->name,name)) break;
 443     }
 444     vf=malloc(sizeof(vf_instance_t));
 445     memset(vf,0,sizeof(vf_instance_t));
 446     vf->info=filter_list[i];
 447     vf->next=next;
 448     vf->config=vf_next_config;
 449     vf->control=vf_next_control;
 450     vf->query_format=vf_default_query_format;
 451     vf->put_image=vf_next_put_image;
 452     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 453     vf->default_reqs=0;
 454     if(vf->info->opts) { // vf_vo get some special argument
 455       const m_struct_t* st = vf->info->opts;
 456       void* vf_priv = m_struct_alloc(st);
 457       int n;
 458       for(n = 0 ; args && args[2*n] ; n++)
 459         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 460       vf->priv = vf_priv;
 461       args = NULL;
 462     } else // Otherwise we should have the '_oldargs_'
 463       if(args && !strcmp(args[0],"_oldargs_"))
 464         args = (char**)args[1];
 465       else
 466         args = NULL;
 467     if(vf->info->open(vf,(char*)args)>0) return vf; // Success!
 468     free(vf);
 469     mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotOpenVideoFilter,name);
 470     return NULL;
 471 }
 472
 473 vf_instance_t* vf_open_filter(vf_instance_t* next, const char *name, char **args){
 474   if(args && strcmp(args[0],"_oldargs_")) {
 475     int i,l = 0;
 476     for(i = 0 ; args && args[2*i] ; i++)
 477       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 478     l += strlen(name);
 479     {
 480       char str[l+1];
 481       char* p = str;
 482       p += sprintf(str,"%s",name);
 483       for(i = 0 ; args && args[2*i] ; i++)
 484         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 485       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter "[%s]\n",str);
 486     }
 487   } else if(strcmp(name,"vo")) {
 488     if(args && strcmp(args[0],"_oldargs_") == 0)
 489       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 490              "[%s=%s]\n", name,args[1]);
 491     else
 492       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 493              "[%s]\n", name);
 494   }
 495   return vf_open_plugin(filter_list,next,name,args);
 496 }
 497
 498 /**
 499  * \brief adds a filter before the last one (which should be the vo filter).
 500  * \param vf start of the filter chain.
 501  * \param name name of the filter to add.
 502  * \param args argument list for the filter.
 503  * \return pointer to the filter instance that was created.
 504  */
 505 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 506   vf_instance_t *vo, *prev = NULL, *new;
 507   // Find the last filter (should be vf_vo)
 508   for (vo = *vf; vo->next; vo = vo->next)
 509     prev = vo;
 510   new = vf_open_filter(vo, name, args);
 511   if (prev)
 512     prev->next = new;
 513   else
 514     *vf = new;
 515   return new;
 516 }
 517
 518 //============================================================================
 519
 520 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 521     vf_instance_t* vf=*vfp;
 522     const unsigned int* p;
 523     unsigned int best=0;
 524     int ret;
 525     if((p=list)) while(*p){
 526         ret=vf->query_format(vf,*p);
 527         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 528         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 529         if(ret&1 && !best) best=*p; // best with conversion
 530         ++p;
 531     }
 532     if(best) return best; // bingo, they have common csp!
 533     // ok, then try with scale:
 534     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 535     vf=vf_open_filter(vf,"scale",NULL);
 536     if(!vf) return 0; // failed to init "scale"
 537     // try the preferred csp first:
 538     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 539     // try the list again, now with "scaler" :
 540     if((p=list)) while(*p){
 541         ret=vf->query_format(vf,*p);
 542         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 543         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 544         if(ret&1 && !best) best=*p; // best with conversion
 545         ++p;
 546     }
 547     if(best) *vfp=vf; // else uninit vf  !FIXME!
 548     return best;
 549 }
 550
 551 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 552     dst->pict_type= src->pict_type;
 553     dst->fields = src->fields;
 554     dst->qscale_type= src->qscale_type;
 555     if(dst->width == src->width && dst->height == src->height){
 556         dst->qstride= src->qstride;
 557         dst->qscale= src->qscale;
 558     }
 559 }
 560
 561 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 562 {
 563     vf->continue_buffered_image = func;
 564 }
 565
 566 // Output the next buffered image (if any) from the filter chain.
 567 // The queue could be kept as a simple stack/list instead avoiding the
 568 // looping here, but there's currently no good context variable where
 569 // that could be stored so this was easier to implement.
 570
 571 int vf_output_queued_frame(vf_instance_t *vf)
 572 {
 573     while (1) {
 574         int ret;
 575         vf_instance_t *current;
 576         vf_instance_t *last=NULL;
 577         int (*tmp)(vf_instance_t *);
 578         for (current = vf; current; current = current->next)
 579             if (current->continue_buffered_image)
 580                 last = current;
 581         if (!last)
 582             return 0;
 583         tmp = last->continue_buffered_image;
 584         last->continue_buffered_image = NULL;
 585         ret = tmp(last);
 586         if (ret > 0) {
 587             vf->control(vf, VFCTRL_DRAW_OSD, NULL);
 588 #ifdef CONFIG_ASS
 589             vf->control(vf, VFCTRL_DRAW_EOSD, NULL);
 590 #endif
 591         }
 592         if (ret)
 593             return ret;
 594     }
 595 }
 596
 597
 598 /**
 599  * \brief Video config() function wrapper
 600  *
 601  * Blocks config() calls with different size or format for filters
 602  * with VFCAP_CONSTANT
 603  *
 604  * First call is redirected to vf->config.
 605  *
 606  * In following calls, it verifies that the configuration parameters
 607  * are unchanged, and returns either success or error.
 608  *
 609 */
 610 int vf_config_wrapper(struct vf_instance_s* vf,
 611                     int width, int height, int d_width, int d_height,
 612                     unsigned int flags, unsigned int outfmt)
 613 {
 614     int r;
 615     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 616         if ((vf->fmt.orig_width != width)
 617             || (vf->fmt.orig_height != height)
 618             || (vf->fmt.orig_fmt != outfmt)) {
 619             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_ResolutionDoesntMatch);
 620             return 0;
 621         }
 622         return 1;
 623     }
 624     vf->fmt.have_configured = 1;
 625     vf->fmt.orig_height = height;
 626     vf->fmt.orig_width = width;
 627     vf->fmt.orig_fmt = outfmt;
 628     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 629     if (!r) vf->fmt.have_configured = 0;
 630     return r;
 631 }
 632
 633 int vf_next_config(struct vf_instance_s* vf,
 634         int width, int height, int d_width, int d_height,
 635         unsigned int voflags, unsigned int outfmt){
 636     int miss;
 637     int flags=vf->next->query_format(vf->next,outfmt);
 638     if(!flags){
 639         // hmm. colorspace mismatch!!!
 640         // let's insert the 'scale' filter, it does the job for us:
 641         vf_instance_t* vf2;
 642         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 643         vf2=vf_open_filter(vf->next,"scale",NULL);
 644         if(!vf2) return 0; // shouldn't happen!
 645         vf->next=vf2;
 646         flags=vf->next->query_format(vf->next,outfmt);
 647         if(!flags){
 648             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CannotFindColorspace);
 649             return 0; // FAIL
 650         }
 651     }
 652     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 653     miss=vf->default_reqs - (flags&vf->default_reqs);
 654     if(miss&VFCAP_ACCEPT_STRIDE){
 655         // vf requires stride support but vf->next doesn't support it!
 656         // let's insert the 'expand' filter, it does the job for us:
 657         vf_instance_t* vf2=vf_open_filter(vf->next,"expand",NULL);
 658         if(!vf2) return 0; // shouldn't happen!
 659         vf->next=vf2;
 660     }
 661     vf->next->w = width; vf->next->h = height;
 662     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 663 }
 664
 665 int vf_next_control(struct vf_instance_s* vf, int request, void* data){
 666     return vf->next->control(vf->next,request,data);
 667 }
 668
 669 void vf_extra_flip(struct vf_instance_s* vf) {
 670     vf_next_control(vf, VFCTRL_DRAW_OSD, NULL);
 671 #ifdef CONFIG_ASS
 672     vf_next_control(vf, VFCTRL_DRAW_EOSD, NULL);
 673 #endif
 674     vf_next_control(vf, VFCTRL_FLIP_PAGE, NULL);
 675 }
 676
 677 int vf_next_query_format(struct vf_instance_s* vf, unsigned int fmt){
 678     int flags=vf->next->query_format(vf->next,fmt);
 679     if(flags) flags|=vf->default_caps;
 680     return flags;
 681 }
 682
 683 int vf_next_put_image(struct vf_instance_s* vf,mp_image_t *mpi, double pts){
 684     return vf->next->put_image(vf->next,mpi, pts);
 685 }
 686
 687 void vf_next_draw_slice(struct vf_instance_s* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 688     if (vf->next->draw_slice) {
 689         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 690         return;
 691     }
 692     if (!vf->dmpi) {
 693         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 694         return;
 695     }
 696     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 697         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 698             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 699         return;
 700     }
 701     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 702         w, h, vf->dmpi->stride[0], stride[0]);
 703     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 704         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 705     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 706         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 707 }
 708
 709 //============================================================================
 710
 711 vf_instance_t* append_filters(vf_instance_t* last){
 712   vf_instance_t* vf;
 713   int i;
 714
 715   if(vf_settings) {
 716     // We want to add them in the 'right order'
 717     for(i = 0 ; vf_settings[i].name ; i++)
 718       /* NOP */;
 719     for(i-- ; i >= 0 ; i--) {
 720       //printf("Open filter %s\n",vf_settings[i].name);
 721       vf = vf_open_filter(last,vf_settings[i].name,vf_settings[i].attribs);
 722       if(vf) last=vf;
 723     }
 724   }
 725   return last;
 726 }
 727
 728 //============================================================================
 729
 730 void vf_uninit_filter(vf_instance_t* vf){
 731     if(vf->uninit) vf->uninit(vf);
 732     free_mp_image(vf->imgctx.static_images[0]);
 733     free_mp_image(vf->imgctx.static_images[1]);
 734     free_mp_image(vf->imgctx.temp_images[0]);
 735     free_mp_image(vf->imgctx.export_images[0]);
 736     free(vf);
 737 }
 738
 739 void vf_uninit_filter_chain(vf_instance_t* vf){
 740     while(vf){
 741         vf_instance_t* next=vf->next;
 742         vf_uninit_filter(vf);
 743         vf=next;
 744     }
 745 }