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 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 139     &vf_info_yuy2,
 140 #endif
 141     &vf_info_flip,
 142 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 143     &vf_info_rgb2bgr,
 144 #endif
 145     &vf_info_rotate,
 146     &vf_info_mirror,
 147 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 148     &vf_info_palette,
 149 #endif
 150     &vf_info_pp7,
 151 #ifdef CONFIG_LIBAVCODEC
 152     &vf_info_lavc,
 153     &vf_info_lavcdeint,
 154     &vf_info_screenshot,
 155     &vf_info_uspp,
 156 #endif
 157 #ifdef CONFIG_ZR
 158     &vf_info_zrmjpeg,
 159 #endif
 160     &vf_info_dvbscale,
 161     &vf_info_cropdetect,
 162     &vf_info_test,
 163     &vf_info_noise,
 164     &vf_info_yvu9,
 165     &vf_info_eq,
 166     &vf_info_eq2,
 167     &vf_info_gradfun,
 168 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 169     &vf_info_halfpack,
 170 #endif
 171     &vf_info_dint,
 172     &vf_info_1bpp,
 173     &vf_info_2xsai,
 174     &vf_info_unsharp,
 175     &vf_info_swapuv,
 176     &vf_info_il,
 177     &vf_info_fil,
 178     &vf_info_boxblur,
 179     &vf_info_sab,
 180     &vf_info_smartblur,
 181     &vf_info_perspective,
 182     &vf_info_down3dright,
 183     &vf_info_field,
 184     &vf_info_denoise3d,
 185     &vf_info_hqdn3d,
 186     &vf_info_detc,
 187     &vf_info_telecine,
 188     &vf_info_tinterlace,
 189     &vf_info_tfields,
 190     &vf_info_ivtc,
 191     &vf_info_ilpack,
 192     &vf_info_dsize,
 193     &vf_info_decimate,
 194     &vf_info_softpulldown,
 195     &vf_info_pullup,
 196     &vf_info_filmdint,
 197     &vf_info_framestep,
 198     &vf_info_tile,
 199     &vf_info_delogo,
 200     &vf_info_remove_logo,
 201     &vf_info_hue,
 202 #ifdef CONFIG_LIBAVCODEC_INTERNALS
 203     &vf_info_spp,
 204     &vf_info_fspp,
 205     &vf_info_qp,
 206     &vf_info_mcdeint,
 207     &vf_info_geq,
 208 #endif
 209     &vf_info_yuvcsp,
 210     &vf_info_kerndeint,
 211     &vf_info_rgbtest,
 212     &vf_info_phase,
 213     &vf_info_divtc,
 214     &vf_info_harddup,
 215     &vf_info_softskip,
 216 #ifdef CONFIG_ASS
 217     &vf_info_ass,
 218 #endif
 219     &vf_info_yadif,
 220     &vf_info_blackframe,
 221     &vf_info_ow,
 222     NULL
 223 };
 224
 225 // For the vf option
 226 const m_obj_list_t vf_obj_list = {
 227   (void**)filter_list,
 228   M_ST_OFF(vf_info_t,name),
 229   M_ST_OFF(vf_info_t,info),
 230   M_ST_OFF(vf_info_t,opts)
 231 };
 232
 233 //============================================================================
 234 // mpi stuff:
 235
 236 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 237     int y;
 238     if(mpi->flags&MP_IMGFLAG_PLANAR){
 239         y0&=~1;h+=h&1;
 240         if(x0==0 && w==mpi->width){
 241             // full width clear:
 242             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 243             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 244             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 245         } else
 246         for(y=y0;y<y0+h;y+=2){
 247             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 248             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 249             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 250             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 251         }
 252         return;
 253     }
 254     // packed:
 255     for(y=y0;y<y0+h;y++){
 256         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 257         if(mpi->flags&MP_IMGFLAG_YUV){
 258             unsigned int* p=(unsigned int*) dst;
 259             int size=(mpi->bpp>>3)*w/4;
 260             int i;
 261 #if HAVE_BIGENDIAN
 262 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 263 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 264 #else
 265 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 266 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 267 #endif
 268             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 269                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 270                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 271             } else {
 272                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 273                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 274             }
 275         } else
 276             memset(dst,0,(mpi->bpp>>3)*w);
 277     }
 278 }
 279
 280 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 281   mp_image_t* mpi=NULL;
 282   int w2;
 283   int number = mp_imgtype >> 16;
 284
 285 #ifdef MP_DEBUG
 286   assert(w == -1 || w >= vf->w);
 287   assert(h == -1 || h >= vf->h);
 288   assert(vf->w > 0);
 289   assert(vf->h > 0);
 290 #endif
 291
 292 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 293
 294   if (w == -1) w = vf->w;
 295   if (h == -1) h = vf->h;
 296
 297   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 298
 299   if(vf->put_image==vf_next_put_image){
 300       // passthru mode, if the filter uses the fallback/default put_image() code
 301       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 302   }
 303
 304   // Note: we should call libvo first to check if it supports direct rendering
 305   // and if not, then fallback to software buffers:
 306   switch(mp_imgtype & 0xff){
 307   case MP_IMGTYPE_EXPORT:
 308     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 309     mpi=vf->imgctx.export_images[0];
 310     break;
 311   case MP_IMGTYPE_STATIC:
 312     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 313     mpi=vf->imgctx.static_images[0];
 314     break;
 315   case MP_IMGTYPE_TEMP:
 316     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 317     mpi=vf->imgctx.temp_images[0];
 318     break;
 319   case MP_IMGTYPE_IPB:
 320     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 321       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 322       mpi=vf->imgctx.temp_images[0];
 323       break;
 324     }
 325   case MP_IMGTYPE_IP:
 326     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 327     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 328     vf->imgctx.static_idx^=1;
 329     break;
 330   case MP_IMGTYPE_NUMBERED:
 331     if (number == -1) {
 332       int i;
 333       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 334         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 335           break;
 336       number = i;
 337     }
 338     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 339     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 340     mpi = vf->imgctx.numbered_images[number];
 341     mpi->number = number;
 342     break;
 343   }
 344   if(mpi){
 345     mpi->type=mp_imgtype;
 346     mpi->w=vf->w; mpi->h=vf->h;
 347     // keep buffer allocation status & color flags only:
 348 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 349     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 350     // accept restrictions, draw_slice and palette flags only:
 351     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK|MP_IMGFLAG_RGB_PALETTE);
 352     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 353     if(mpi->width!=w2 || mpi->height!=h){
 354 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 355         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 356             if(mpi->width<w2 || mpi->height<h){
 357                 // need to re-allocate buffer memory:
 358                 free(mpi->planes[0]);
 359                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 360                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 361             }
 362 //      } else {
 363         } {
 364             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 365             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 366         }
 367     }
 368     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 369     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 370
 371         // check libvo first!
 372         if(vf->get_image) vf->get_image(vf,mpi);
 373
 374         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 375           // non-direct and not yet allocated image. allocate it!
 376           if (!mpi->bpp) { // no way we can allocate this
 377               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 378                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 379               return NULL;
 380           }
 381
 382           // check if codec prefer aligned stride:
 383           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 384               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 385                          mpi->flags&MP_IMGFLAG_YUV) ?
 386                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 387               w2=((w+align)&(~align));
 388               if(mpi->width!=w2){
 389                   // we have to change width... check if we CAN co it:
 390                   int flags=vf->query_format(vf,outfmt); // should not fail
 391                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 392 //                printf("query -> 0x%X    \n",flags);
 393                   if(flags&VFCAP_ACCEPT_STRIDE){
 394                       mpi->width=w2;
 395                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 396                   }
 397               }
 398           }
 399
 400           mp_image_alloc_planes(mpi);
 401 //        printf("clearing img!\n");
 402           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 403         }
 404     }
 405     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 406         if(vf->start_slice) vf->start_slice(vf,mpi);
 407     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 408             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 409                   vf->info->name,
 410                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 411                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 412                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 413                   mpi->width,mpi->height,mpi->bpp,
 414                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 415                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 416                   mpi->bpp*mpi->width*mpi->height/8);
 417             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",
 418                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 419                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 420                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 421             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 422     }
 423
 424   mpi->qscale = NULL;
 425   }
 426   mpi->usage_count++;
 427 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 428 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 429 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 430   return mpi;
 431 }
 432
 433 //============================================================================
 434
 435 // By default vf doesn't accept MPEGPES
 436 static int vf_default_query_format(struct vf_instance* vf, unsigned int fmt){
 437   if(fmt == IMGFMT_MPEGPES) return 0;
 438   return vf_next_query_format(vf,fmt);
 439 }
 440
 441 struct vf_instance *vf_open_plugin_noerr(struct MPOpts *opts,
 442                                          const vf_info_t * const *filter_list,
 443                                          vf_instance_t *next, const char *name,
 444                                          char **args, int *retcode)
 445 {
 446     vf_instance_t* vf;
 447     int i;
 448     for(i=0;;i++){
 449         if(!filter_list[i]){
 450             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Couldn't find video filter '%s'.\n",name);
 451             return NULL; // no such filter!
 452         }
 453         if(!strcmp(filter_list[i]->name,name)) break;
 454     }
 455     vf = calloc(1, sizeof *vf);
 456     vf->opts = opts;
 457     vf->info=filter_list[i];
 458     vf->next=next;
 459     vf->config=vf_next_config;
 460     vf->control=vf_next_control;
 461     vf->query_format=vf_default_query_format;
 462     vf->put_image=vf_next_put_image;
 463     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 464     vf->default_reqs=0;
 465     if(vf->info->opts) { // vf_vo get some special argument
 466       const m_struct_t* st = vf->info->opts;
 467       void* vf_priv = m_struct_alloc(st);
 468       int n;
 469       for(n = 0 ; args && args[2*n] ; n++)
 470         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 471       vf->priv = vf_priv;
 472       args = NULL;
 473     } else // Otherwise we should have the '_oldargs_'
 474       if(args && !strcmp(args[0],"_oldargs_"))
 475         args = (char**)args[1];
 476       else
 477         args = NULL;
 478     *retcode = vf->info->vf_open(vf,(char*)args);
 479     if (*retcode > 0)
 480         return vf;
 481     free(vf);
 482     return NULL;
 483 }
 484
 485 struct vf_instance *vf_open_plugin(struct MPOpts *opts,
 486                                    const vf_info_t * const *filter_list,
 487                                    vf_instance_t *next, const char *name,
 488                                    char **args)
 489 {
 490     struct vf_instance *vf = vf_open_plugin_noerr(opts, filter_list, next,
 491                                                   name, args, &(int){0});
 492     if (!vf)
 493         mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Couldn't open video filter '%s'.\n",
 494                 name);
 495     return vf;
 496 }
 497
 498 vf_instance_t* vf_open_filter(struct MPOpts *opts, vf_instance_t* next, const char *name, char **args){
 499   if(args && strcmp(args[0],"_oldargs_")) {
 500     int i,l = 0;
 501     for(i = 0 ; args && args[2*i] ; i++)
 502       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 503     l += strlen(name);
 504     {
 505       char str[l+1];
 506       char* p = str;
 507       p += sprintf(str,"%s",name);
 508       for(i = 0 ; args && args[2*i] ; i++)
 509         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 510       mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 511              mp_gtext("Opening video filter: "), str);
 512     }
 513   } else if(strcmp(name,"vo")) {
 514     if(args && strcmp(args[0],"_oldargs_") == 0)
 515         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s=%s]\n",
 516                mp_gtext("Opening video filter: "), name, args[1]);
 517     else
 518         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 519                mp_gtext("Opening video filter: "), name);
 520   }
 521   return vf_open_plugin(opts, filter_list,next,name,args);
 522 }
 523
 524 /**
 525  * \brief adds a filter before the last one (which should be the vo filter).
 526  * \param vf start of the filter chain.
 527  * \param name name of the filter to add.
 528  * \param args argument list for the filter.
 529  * \return pointer to the filter instance that was created.
 530  */
 531 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 532   struct MPOpts *opts = (*vf)->opts;
 533   vf_instance_t *vo, *prev = NULL, *new;
 534   // Find the last filter (should be vf_vo)
 535   for (vo = *vf; vo->next; vo = vo->next)
 536     prev = vo;
 537   new = vf_open_filter(opts, vo, name, args);
 538   if (prev)
 539     prev->next = new;
 540   else
 541     *vf = new;
 542   return new;
 543 }
 544
 545 //============================================================================
 546
 547 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 548     vf_instance_t* vf=*vfp;
 549     struct MPOpts *opts = vf->opts;
 550     const unsigned int* p;
 551     unsigned int best=0;
 552     int ret;
 553     if((p=list)) while(*p){
 554         ret=vf->query_format(vf,*p);
 555         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 556         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 557         if(ret&1 && !best) best=*p; // best with conversion
 558         ++p;
 559     }
 560     if(best) return best; // bingo, they have common csp!
 561     // ok, then try with scale:
 562     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 563     vf=vf_open_filter(opts, vf,"scale",NULL);
 564     if(!vf) return 0; // failed to init "scale"
 565     // try the preferred csp first:
 566     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 567     // try the list again, now with "scaler" :
 568     if((p=list)) while(*p){
 569         ret=vf->query_format(vf,*p);
 570         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 571         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 572         if(ret&1 && !best) best=*p; // best with conversion
 573         ++p;
 574     }
 575     if(best) *vfp=vf; // else uninit vf  !FIXME!
 576     return best;
 577 }
 578
 579 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 580     dst->pict_type= src->pict_type;
 581     dst->fields = src->fields;
 582     dst->qscale_type= src->qscale_type;
 583     if(dst->width == src->width && dst->height == src->height){
 584         dst->qstride= src->qstride;
 585         dst->qscale= src->qscale;
 586     }
 587 }
 588
 589 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 590 {
 591     vf->continue_buffered_image = func;
 592 }
 593
 594 // Output the next buffered image (if any) from the filter chain.
 595 // The queue could be kept as a simple stack/list instead avoiding the
 596 // looping here, but there's currently no good context variable where
 597 // that could be stored so this was easier to implement.
 598
 599 int vf_output_queued_frame(vf_instance_t *vf)
 600 {
 601     while (1) {
 602         int ret;
 603         vf_instance_t *current;
 604         vf_instance_t *last=NULL;
 605         int (*tmp)(vf_instance_t *);
 606         for (current = vf; current; current = current->next)
 607             if (current->continue_buffered_image)
 608                 last = current;
 609         if (!last)
 610             return 0;
 611         tmp = last->continue_buffered_image;
 612         last->continue_buffered_image = NULL;
 613         ret = tmp(last);
 614         if (ret)
 615             return ret;
 616     }
 617 }
 618
 619
 620 /**
 621  * \brief Video config() function wrapper
 622  *
 623  * Blocks config() calls with different size or format for filters
 624  * with VFCAP_CONSTANT
 625  *
 626  * First call is redirected to vf->config.
 627  *
 628  * In following calls, it verifies that the configuration parameters
 629  * are unchanged, and returns either success or error.
 630  *
 631 */
 632 int vf_config_wrapper(struct vf_instance* vf,
 633                     int width, int height, int d_width, int d_height,
 634                     unsigned int flags, unsigned int outfmt)
 635 {
 636     int r;
 637     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 638         if ((vf->fmt.orig_width != width)
 639             || (vf->fmt.orig_height != height)
 640             || (vf->fmt.orig_fmt != outfmt)) {
 641             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"\nNew video file has different resolution or colorspace than the previous one.\n");
 642             return 0;
 643         }
 644         return 1;
 645     }
 646     vf->fmt.have_configured = 1;
 647     vf->fmt.orig_height = height;
 648     vf->fmt.orig_width = width;
 649     vf->fmt.orig_fmt = outfmt;
 650     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 651     if (!r) vf->fmt.have_configured = 0;
 652     return r;
 653 }
 654
 655 int vf_next_config(struct vf_instance* vf,
 656         int width, int height, int d_width, int d_height,
 657         unsigned int voflags, unsigned int outfmt){
 658     struct MPOpts *opts = vf->opts;
 659     int miss;
 660     int flags=vf->next->query_format(vf->next,outfmt);
 661     if(!flags){
 662         // hmm. colorspace mismatch!!!
 663         // let's insert the 'scale' filter, it does the job for us:
 664         vf_instance_t* vf2;
 665         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 666         vf2=vf_open_filter(opts, vf->next,"scale",NULL);
 667         if(!vf2) return 0; // shouldn't happen!
 668         vf->next=vf2;
 669         flags=vf->next->query_format(vf->next,outfmt);
 670         if(!flags){
 671             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Cannot find matching colorspace, even by inserting 'scale' :(\n");
 672             return 0; // FAIL
 673         }
 674     }
 675     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 676     miss=vf->default_reqs - (flags&vf->default_reqs);
 677     if(miss&VFCAP_ACCEPT_STRIDE){
 678         // vf requires stride support but vf->next doesn't support it!
 679         // let's insert the 'expand' filter, it does the job for us:
 680         vf_instance_t* vf2=vf_open_filter(opts, vf->next,"expand",NULL);
 681         if(!vf2) return 0; // shouldn't happen!
 682         vf->next=vf2;
 683     }
 684     vf->next->w = width; vf->next->h = height;
 685     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 686 }
 687
 688 int vf_next_control(struct vf_instance* vf, int request, void* data){
 689     return vf->next->control(vf->next,request,data);
 690 }
 691
 692 int vf_next_query_format(struct vf_instance* vf, unsigned int fmt){
 693     int flags=vf->next->query_format(vf->next,fmt);
 694     if(flags) flags|=vf->default_caps;
 695     return flags;
 696 }
 697
 698 int vf_next_put_image(struct vf_instance* vf,mp_image_t *mpi, double pts){
 699     return vf->next->put_image(vf->next,mpi, pts);
 700 }
 701
 702 void vf_next_draw_slice(struct vf_instance* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 703     if (vf->next->draw_slice) {
 704         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 705         return;
 706     }
 707     if (!vf->dmpi) {
 708         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 709         return;
 710     }
 711     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 712         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 713             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 714         return;
 715     }
 716     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 717         w, h, vf->dmpi->stride[0], stride[0]);
 718     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 719         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 720     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 721         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 722 }
 723
 724 //============================================================================
 725
 726 vf_instance_t *append_filters(vf_instance_t* last,
 727                               struct m_obj_settings *vf_settings)
 728 {
 729   struct MPOpts *opts = last->opts;
 730   vf_instance_t* vf;
 731   int i;
 732
 733   if(vf_settings) {
 734     // We want to add them in the 'right order'
 735     for(i = 0 ; vf_settings[i].name ; i++)
 736       /* NOP */;
 737     for(i-- ; i >= 0 ; i--) {
 738       //printf("Open filter %s\n",vf_settings[i].name);
 739       vf = vf_open_filter(opts, last,vf_settings[i].name,vf_settings[i].attribs);
 740       if(vf) last=vf;
 741     }
 742   }
 743   return last;
 744 }
 745
 746 //============================================================================
 747
 748 void vf_uninit_filter(vf_instance_t* vf){
 749     if(vf->uninit) vf->uninit(vf);
 750     free_mp_image(vf->imgctx.static_images[0]);
 751     free_mp_image(vf->imgctx.static_images[1]);
 752     free_mp_image(vf->imgctx.temp_images[0]);
 753     free_mp_image(vf->imgctx.export_images[0]);
 754     for (int i = 0; i < NUM_NUMBERED_MPI; i++)
 755         free_mp_image(vf->imgctx.numbered_images[i]);
 756     free(vf);
 757 }
 758
 759 void vf_uninit_filter_chain(vf_instance_t* vf){
 760     while(vf){
 761         vf_instance_t* next=vf->next;
 762         vf_uninit_filter(vf);
 763         vf=next;
 764     }
 765 }