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 "m_option.h"
  34 #include "m_struct.h"
  35
  36
  37 #include "img_format.h"
  38 #include "mp_image.h"
  39 #include "vf.h"
  40
  41 #include "libvo/fastmemcpy.h"
  42 #include "libavutil/mem.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_flip;
  54 extern const vf_info_t vf_info_rotate;
  55 extern const vf_info_t vf_info_mirror;
  56 extern const vf_info_t vf_info_palette;
  57 extern const vf_info_t vf_info_lavc;
  58 extern const vf_info_t vf_info_zrmjpeg;
  59 extern const vf_info_t vf_info_dvbscale;
  60 extern const vf_info_t vf_info_cropdetect;
  61 extern const vf_info_t vf_info_test;
  62 extern const vf_info_t vf_info_noise;
  63 extern const vf_info_t vf_info_yvu9;
  64 extern const vf_info_t vf_info_lavcdeint;
  65 extern const vf_info_t vf_info_eq;
  66 extern const vf_info_t vf_info_eq2;
  67 extern const vf_info_t vf_info_gradfun;
  68 extern const vf_info_t vf_info_halfpack;
  69 extern const vf_info_t vf_info_dint;
  70 extern const vf_info_t vf_info_1bpp;
  71 extern const vf_info_t vf_info_2xsai;
  72 extern const vf_info_t vf_info_unsharp;
  73 extern const vf_info_t vf_info_swapuv;
  74 extern const vf_info_t vf_info_il;
  75 extern const vf_info_t vf_info_fil;
  76 extern const vf_info_t vf_info_boxblur;
  77 extern const vf_info_t vf_info_sab;
  78 extern const vf_info_t vf_info_smartblur;
  79 extern const vf_info_t vf_info_perspective;
  80 extern const vf_info_t vf_info_down3dright;
  81 extern const vf_info_t vf_info_field;
  82 extern const vf_info_t vf_info_denoise3d;
  83 extern const vf_info_t vf_info_hqdn3d;
  84 extern const vf_info_t vf_info_detc;
  85 extern const vf_info_t vf_info_telecine;
  86 extern const vf_info_t vf_info_tinterlace;
  87 extern const vf_info_t vf_info_tfields;
  88 extern const vf_info_t vf_info_ivtc;
  89 extern const vf_info_t vf_info_ilpack;
  90 extern const vf_info_t vf_info_dsize;
  91 extern const vf_info_t vf_info_decimate;
  92 extern const vf_info_t vf_info_softpulldown;
  93 extern const vf_info_t vf_info_pullup;
  94 extern const vf_info_t vf_info_filmdint;
  95 extern const vf_info_t vf_info_framestep;
  96 extern const vf_info_t vf_info_tile;
  97 extern const vf_info_t vf_info_delogo;
  98 extern const vf_info_t vf_info_remove_logo;
  99 extern const vf_info_t vf_info_hue;
 100 extern const vf_info_t vf_info_spp;
 101 extern const vf_info_t vf_info_uspp;
 102 extern const vf_info_t vf_info_fspp;
 103 extern const vf_info_t vf_info_pp7;
 104 extern const vf_info_t vf_info_yuvcsp;
 105 extern const vf_info_t vf_info_kerndeint;
 106 extern const vf_info_t vf_info_rgbtest;
 107 extern const vf_info_t vf_info_qp;
 108 extern const vf_info_t vf_info_phase;
 109 extern const vf_info_t vf_info_divtc;
 110 extern const vf_info_t vf_info_harddup;
 111 extern const vf_info_t vf_info_softskip;
 112 extern const vf_info_t vf_info_screenshot;
 113 extern const vf_info_t vf_info_ass;
 114 extern const vf_info_t vf_info_mcdeint;
 115 extern const vf_info_t vf_info_yadif;
 116 extern const vf_info_t vf_info_blackframe;
 117 extern const vf_info_t vf_info_geq;
 118 extern const vf_info_t vf_info_ow;
 119 extern const vf_info_t vf_info_fixpts;
 120
 121 // list of available filters:
 122 static const vf_info_t* const filter_list[]={
 123     &vf_info_rectangle,
 124 #ifdef HAVE_POSIX_SELECT
 125     &vf_info_bmovl,
 126 #endif
 127     &vf_info_crop,
 128     &vf_info_expand,
 129 #ifdef CONFIG_LIBPOSTPROC
 130     &vf_info_pp,
 131 #endif
 132     &vf_info_scale,
 133 //    &vf_info_osd,
 134     &vf_info_vo,
 135     &vf_info_format,
 136     &vf_info_noformat,
 137     &vf_info_flip,
 138     &vf_info_rotate,
 139     &vf_info_mirror,
 140 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 141     &vf_info_palette,
 142 #endif
 143     &vf_info_pp7,
 144 #ifdef CONFIG_LIBAVCODEC
 145     &vf_info_lavc,
 146     &vf_info_lavcdeint,
 147     &vf_info_screenshot,
 148     &vf_info_uspp,
 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 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 162     &vf_info_halfpack,
 163 #endif
 164     &vf_info_dint,
 165     &vf_info_1bpp,
 166     &vf_info_2xsai,
 167     &vf_info_unsharp,
 168     &vf_info_swapuv,
 169     &vf_info_il,
 170     &vf_info_fil,
 171     &vf_info_boxblur,
 172     &vf_info_sab,
 173     &vf_info_smartblur,
 174     &vf_info_perspective,
 175     &vf_info_down3dright,
 176     &vf_info_field,
 177     &vf_info_denoise3d,
 178     &vf_info_hqdn3d,
 179     &vf_info_detc,
 180     &vf_info_telecine,
 181     &vf_info_tinterlace,
 182     &vf_info_tfields,
 183     &vf_info_ivtc,
 184     &vf_info_ilpack,
 185     &vf_info_dsize,
 186     &vf_info_decimate,
 187     &vf_info_softpulldown,
 188     &vf_info_pullup,
 189     &vf_info_filmdint,
 190     &vf_info_framestep,
 191     &vf_info_tile,
 192     &vf_info_delogo,
 193     &vf_info_remove_logo,
 194     &vf_info_hue,
 195 #ifdef CONFIG_LIBAVCODEC_INTERNALS
 196     &vf_info_spp,
 197     &vf_info_fspp,
 198     &vf_info_qp,
 199     &vf_info_mcdeint,
 200     &vf_info_geq,
 201 #endif
 202     &vf_info_yuvcsp,
 203     &vf_info_kerndeint,
 204     &vf_info_rgbtest,
 205     &vf_info_phase,
 206     &vf_info_divtc,
 207     &vf_info_harddup,
 208     &vf_info_softskip,
 209 #ifdef CONFIG_ASS
 210     &vf_info_ass,
 211 #endif
 212     &vf_info_yadif,
 213     &vf_info_blackframe,
 214     &vf_info_ow,
 215     &vf_info_fixpts,
 216     NULL
 217 };
 218
 219 // For the vf option
 220 const m_obj_list_t vf_obj_list = {
 221   (void**)filter_list,
 222   M_ST_OFF(vf_info_t,name),
 223   M_ST_OFF(vf_info_t,info),
 224   M_ST_OFF(vf_info_t,opts)
 225 };
 226
 227 //============================================================================
 228 // mpi stuff:
 229
 230 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 231     int y;
 232     if(mpi->flags&MP_IMGFLAG_PLANAR){
 233         y0&=~1;h+=h&1;
 234         if(x0==0 && w==mpi->width){
 235             // full width clear:
 236             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 237             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 238             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 239         } else
 240         for(y=y0;y<y0+h;y+=2){
 241             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 242             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 243             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 244             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 245         }
 246         return;
 247     }
 248     // packed:
 249     for(y=y0;y<y0+h;y++){
 250         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 251         if(mpi->flags&MP_IMGFLAG_YUV){
 252             unsigned int* p=(unsigned int*) dst;
 253             int size=(mpi->bpp>>3)*w/4;
 254             int i;
 255 #if HAVE_BIGENDIAN
 256 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 257 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 258 #else
 259 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 260 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 261 #endif
 262             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 263                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 264                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 265             } else {
 266                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 267                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 268             }
 269         } else
 270             memset(dst,0,(mpi->bpp>>3)*w);
 271     }
 272 }
 273
 274 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 275   mp_image_t* mpi=NULL;
 276   int w2;
 277   int number = mp_imgtype >> 16;
 278
 279 #ifdef MP_DEBUG
 280   assert(w == -1 || w >= vf->w);
 281   assert(h == -1 || h >= vf->h);
 282   assert(vf->w > 0);
 283   assert(vf->h > 0);
 284 #endif
 285
 286 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 287
 288   if (w == -1) w = vf->w;
 289   if (h == -1) h = vf->h;
 290
 291   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 292
 293   if(vf->put_image==vf_next_put_image){
 294       // passthru mode, if the filter uses the fallback/default put_image() code
 295       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 296   }
 297
 298   // Note: we should call libvo first to check if it supports direct rendering
 299   // and if not, then fallback to software buffers:
 300   switch(mp_imgtype & 0xff){
 301   case MP_IMGTYPE_EXPORT:
 302     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 303     mpi=vf->imgctx.export_images[0];
 304     break;
 305   case MP_IMGTYPE_STATIC:
 306     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 307     mpi=vf->imgctx.static_images[0];
 308     break;
 309   case MP_IMGTYPE_TEMP:
 310     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 311     mpi=vf->imgctx.temp_images[0];
 312     break;
 313   case MP_IMGTYPE_IPB:
 314     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 315       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 316       mpi=vf->imgctx.temp_images[0];
 317       break;
 318     }
 319   case MP_IMGTYPE_IP:
 320     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 321     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 322     vf->imgctx.static_idx^=1;
 323     break;
 324   case MP_IMGTYPE_NUMBERED:
 325     if (number == -1) {
 326       int i;
 327       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 328         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 329           break;
 330       number = i;
 331     }
 332     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 333     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 334     mpi = vf->imgctx.numbered_images[number];
 335     mpi->number = number;
 336     break;
 337   }
 338   if(mpi){
 339     mpi->type=mp_imgtype;
 340     mpi->w=vf->w; mpi->h=vf->h;
 341     // keep buffer allocation status & color flags only:
 342 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 343     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 344     // accept restrictions, draw_slice and palette flags only:
 345     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK|MP_IMGFLAG_RGB_PALETTE);
 346     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 347     if(mpi->width!=w2 || mpi->height!=h){
 348 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 349         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 350             if(mpi->width<w2 || mpi->height<h){
 351                 // need to re-allocate buffer memory:
 352                 av_free(mpi->planes[0]);
 353                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 354                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 355             }
 356 //      } else {
 357         } {
 358             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 359             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 360         }
 361     }
 362     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 363     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 364
 365         // check libvo first!
 366         if(vf->get_image) vf->get_image(vf,mpi);
 367
 368         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 369           // non-direct and not yet allocated image. allocate it!
 370           if (!mpi->bpp) { // no way we can allocate this
 371               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 372                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 373               return NULL;
 374           }
 375
 376           // check if codec prefer aligned stride:
 377           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 378               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 379                          mpi->flags&MP_IMGFLAG_YUV) ?
 380                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 381               w2=((w+align)&(~align));
 382               if(mpi->width!=w2){
 383                   // we have to change width... check if we CAN co it:
 384                   int flags=vf->query_format(vf,outfmt); // should not fail
 385                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 386 //                printf("query -> 0x%X    \n",flags);
 387                   if(flags&VFCAP_ACCEPT_STRIDE){
 388                       mpi->width=w2;
 389                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 390                   }
 391               }
 392           }
 393
 394           mp_image_alloc_planes(mpi);
 395 //        printf("clearing img!\n");
 396           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 397         }
 398     }
 399     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 400         if(vf->start_slice) vf->start_slice(vf,mpi);
 401     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 402             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 403                   vf->info->name,
 404                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 405                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 406                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 407                   mpi->width,mpi->height,mpi->bpp,
 408                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 409                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 410                   mpi->bpp*mpi->width*mpi->height/8);
 411             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",
 412                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 413                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 414                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 415             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 416     }
 417
 418   mpi->qscale = NULL;
 419   }
 420   mpi->usage_count++;
 421 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 422 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 423 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 424   return mpi;
 425 }
 426
 427 //============================================================================
 428
 429 // By default vf doesn't accept MPEGPES
 430 static int vf_default_query_format(struct vf_instance *vf, unsigned int fmt){
 431   if(fmt == IMGFMT_MPEGPES) return 0;
 432   return vf_next_query_format(vf,fmt);
 433 }
 434
 435 struct vf_instance *vf_open_plugin_noerr(struct MPOpts *opts,
 436                                          const vf_info_t * const *filter_list,
 437                                          vf_instance_t *next, const char *name,
 438                                          char **args, int *retcode)
 439 {
 440     vf_instance_t* vf;
 441     int i;
 442     for(i=0;;i++){
 443         if(!filter_list[i]){
 444             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Couldn't find video filter '%s'.\n",name);
 445             return NULL; // no such filter!
 446         }
 447         if(!strcmp(filter_list[i]->name,name)) break;
 448     }
 449     vf = calloc(1, sizeof *vf);
 450     vf->opts = opts;
 451     vf->info=filter_list[i];
 452     vf->next=next;
 453     vf->config=vf_next_config;
 454     vf->control=vf_next_control;
 455     vf->query_format=vf_default_query_format;
 456     vf->put_image=vf_next_put_image;
 457     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 458     vf->default_reqs=0;
 459     if(vf->info->opts) { // vf_vo get some special argument
 460       const m_struct_t* st = vf->info->opts;
 461       void* vf_priv = m_struct_alloc(st);
 462       int n;
 463       for(n = 0 ; args && args[2*n] ; n++)
 464         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 465       vf->priv = vf_priv;
 466       args = NULL;
 467     } else // Otherwise we should have the '_oldargs_'
 468       if(args && !strcmp(args[0],"_oldargs_"))
 469         args = (char**)args[1];
 470       else
 471         args = NULL;
 472     *retcode = vf->info->vf_open(vf,(char*)args);
 473     if (*retcode > 0)
 474         return vf;
 475     free(vf);
 476     return NULL;
 477 }
 478
 479 struct vf_instance *vf_open_plugin(struct MPOpts *opts,
 480                                    const vf_info_t * const *filter_list,
 481                                    vf_instance_t *next, const char *name,
 482                                    char **args)
 483 {
 484     struct vf_instance *vf = vf_open_plugin_noerr(opts, filter_list, next,
 485                                                   name, args, &(int){0});
 486     if (!vf)
 487         mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Couldn't open video filter '%s'.\n",
 488                 name);
 489     return vf;
 490 }
 491
 492 vf_instance_t* vf_open_filter(struct MPOpts *opts, vf_instance_t* next, const char *name, char **args){
 493   if(args && strcmp(args[0],"_oldargs_")) {
 494     int i,l = 0;
 495     for(i = 0 ; args && args[2*i] ; i++)
 496       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 497     l += strlen(name);
 498     {
 499       char str[l+1];
 500       char* p = str;
 501       p += sprintf(str,"%s",name);
 502       for(i = 0 ; args && args[2*i] ; i++)
 503         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 504       mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 505              mp_gtext("Opening video filter: "), str);
 506     }
 507   } else if(strcmp(name,"vo")) {
 508     if(args && strcmp(args[0],"_oldargs_") == 0)
 509         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s=%s]\n",
 510                mp_gtext("Opening video filter: "), name, args[1]);
 511     else
 512         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 513                mp_gtext("Opening video filter: "), name);
 514   }
 515   return vf_open_plugin(opts, filter_list,next,name,args);
 516 }
 517
 518 /**
 519  * \brief adds a filter before the last one (which should be the vo filter).
 520  * \param vf start of the filter chain.
 521  * \param name name of the filter to add.
 522  * \param args argument list for the filter.
 523  * \return pointer to the filter instance that was created.
 524  */
 525 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 526   struct MPOpts *opts = (*vf)->opts;
 527   vf_instance_t *vo, *prev = NULL, *new;
 528   // Find the last filter (should be vf_vo)
 529   for (vo = *vf; vo->next; vo = vo->next)
 530     prev = vo;
 531   new = vf_open_filter(opts, vo, name, args);
 532   if (prev)
 533     prev->next = new;
 534   else
 535     *vf = new;
 536   return new;
 537 }
 538
 539 //============================================================================
 540
 541 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 542     vf_instance_t* vf=*vfp;
 543     struct MPOpts *opts = vf->opts;
 544     const unsigned int* p;
 545     unsigned int best=0;
 546     int ret;
 547     if((p=list)) while(*p){
 548         ret=vf->query_format(vf,*p);
 549         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 550         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 551         if(ret&1 && !best) best=*p; // best with conversion
 552         ++p;
 553     }
 554     if(best) return best; // bingo, they have common csp!
 555     // ok, then try with scale:
 556     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 557     vf=vf_open_filter(opts, vf,"scale",NULL);
 558     if(!vf) return 0; // failed to init "scale"
 559     // try the preferred csp first:
 560     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 561     // try the list again, now with "scaler" :
 562     if((p=list)) while(*p){
 563         ret=vf->query_format(vf,*p);
 564         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 565         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 566         if(ret&1 && !best) best=*p; // best with conversion
 567         ++p;
 568     }
 569     if(best) *vfp=vf; // else uninit vf  !FIXME!
 570     return best;
 571 }
 572
 573 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 574     dst->pict_type= src->pict_type;
 575     dst->fields = src->fields;
 576     dst->qscale_type= src->qscale_type;
 577     if(dst->width == src->width && dst->height == src->height){
 578         dst->qstride= src->qstride;
 579         dst->qscale= src->qscale;
 580     }
 581 }
 582
 583 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 584 {
 585     vf->continue_buffered_image = func;
 586 }
 587
 588 // Output the next buffered image (if any) from the filter chain.
 589 // The queue could be kept as a simple stack/list instead avoiding the
 590 // looping here, but there's currently no good context variable where
 591 // that could be stored so this was easier to implement.
 592
 593 int vf_output_queued_frame(vf_instance_t *vf)
 594 {
 595     while (1) {
 596         int ret;
 597         vf_instance_t *current;
 598         vf_instance_t *last=NULL;
 599         int (*tmp)(vf_instance_t *);
 600         for (current = vf; current; current = current->next)
 601             if (current->continue_buffered_image)
 602                 last = current;
 603         if (!last)
 604             return 0;
 605         tmp = last->continue_buffered_image;
 606         last->continue_buffered_image = NULL;
 607         ret = tmp(last);
 608         if (ret)
 609             return ret;
 610     }
 611 }
 612
 613
 614 /**
 615  * \brief Video config() function wrapper
 616  *
 617  * Blocks config() calls with different size or format for filters
 618  * with VFCAP_CONSTANT
 619  *
 620  * First call is redirected to vf->config.
 621  *
 622  * In following calls, it verifies that the configuration parameters
 623  * are unchanged, and returns either success or error.
 624  *
 625 */
 626 int vf_config_wrapper(struct vf_instance *vf,
 627                     int width, int height, int d_width, int d_height,
 628                     unsigned int flags, unsigned int outfmt)
 629 {
 630     int r;
 631     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 632         if ((vf->fmt.orig_width != width)
 633             || (vf->fmt.orig_height != height)
 634             || (vf->fmt.orig_fmt != outfmt)) {
 635             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"\nNew video file has different resolution or colorspace than the previous one.\n");
 636             return 0;
 637         }
 638         return 1;
 639     }
 640     vf->fmt.have_configured = 1;
 641     vf->fmt.orig_height = height;
 642     vf->fmt.orig_width = width;
 643     vf->fmt.orig_fmt = outfmt;
 644     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 645     if (!r) vf->fmt.have_configured = 0;
 646     return r;
 647 }
 648
 649 int vf_next_config(struct vf_instance *vf,
 650         int width, int height, int d_width, int d_height,
 651         unsigned int voflags, unsigned int outfmt){
 652     struct MPOpts *opts = vf->opts;
 653     int miss;
 654     int flags=vf->next->query_format(vf->next,outfmt);
 655     if(!flags){
 656         // hmm. colorspace mismatch!!!
 657         // let's insert the 'scale' filter, it does the job for us:
 658         vf_instance_t* vf2;
 659         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 660         vf2=vf_open_filter(opts, vf->next,"scale",NULL);
 661         if(!vf2) return 0; // shouldn't happen!
 662         vf->next=vf2;
 663         flags=vf->next->query_format(vf->next,outfmt);
 664         if(!flags){
 665             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Cannot find matching colorspace, even by inserting 'scale' :(\n");
 666             return 0; // FAIL
 667         }
 668     }
 669     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 670     miss=vf->default_reqs - (flags&vf->default_reqs);
 671     if(miss&VFCAP_ACCEPT_STRIDE){
 672         // vf requires stride support but vf->next doesn't support it!
 673         // let's insert the 'expand' filter, it does the job for us:
 674         vf_instance_t* vf2=vf_open_filter(opts, vf->next,"expand",NULL);
 675         if(!vf2) return 0; // shouldn't happen!
 676         vf->next=vf2;
 677     }
 678     vf->next->w = width; vf->next->h = height;
 679     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 680 }
 681
 682 int vf_next_control(struct vf_instance *vf, int request, void* data){
 683     return vf->next->control(vf->next,request,data);
 684 }
 685
 686 int vf_next_query_format(struct vf_instance *vf, unsigned int fmt){
 687     int flags=vf->next->query_format(vf->next,fmt);
 688     if(flags) flags|=vf->default_caps;
 689     return flags;
 690 }
 691
 692 int vf_next_put_image(struct vf_instance *vf,mp_image_t *mpi, double pts){
 693     return vf->next->put_image(vf->next,mpi, pts);
 694 }
 695
 696 void vf_next_draw_slice(struct vf_instance *vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 697     if (vf->next->draw_slice) {
 698         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 699         return;
 700     }
 701     if (!vf->dmpi) {
 702         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 703         return;
 704     }
 705     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 706         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 707             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 708         return;
 709     }
 710     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 711         w, h, vf->dmpi->stride[0], stride[0]);
 712     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 713         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 714     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 715         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 716 }
 717
 718 //============================================================================
 719
 720 vf_instance_t *append_filters(vf_instance_t* last,
 721                               struct m_obj_settings *vf_settings)
 722 {
 723   struct MPOpts *opts = last->opts;
 724   vf_instance_t* vf;
 725   int i;
 726
 727   if(vf_settings) {
 728     // We want to add them in the 'right order'
 729     for(i = 0 ; vf_settings[i].name ; i++)
 730       /* NOP */;
 731     for(i-- ; i >= 0 ; i--) {
 732       //printf("Open filter %s\n",vf_settings[i].name);
 733       vf = vf_open_filter(opts, last,vf_settings[i].name,vf_settings[i].attribs);
 734       if(vf) last=vf;
 735     }
 736   }
 737   return last;
 738 }
 739
 740 //============================================================================
 741
 742 void vf_uninit_filter(vf_instance_t* vf){
 743     if(vf->uninit) vf->uninit(vf);
 744     free_mp_image(vf->imgctx.static_images[0]);
 745     free_mp_image(vf->imgctx.static_images[1]);
 746     free_mp_image(vf->imgctx.temp_images[0]);
 747     free_mp_image(vf->imgctx.export_images[0]);
 748     for (int i = 0; i < NUM_NUMBERED_MPI; i++)
 749         free_mp_image(vf->imgctx.numbered_images[i]);
 750     free(vf);
 751 }
 752
 753 void vf_uninit_filter_chain(vf_instance_t* vf){
 754     while(vf){
 755         vf_instance_t* next=vf->next;
 756         vf_uninit_filter(vf);
 757         vf=next;
 758     }
 759 }