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_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 extern const vf_info_t vf_info_fixpts;
 122
 123 // list of available filters:
 124 static const vf_info_t* const filter_list[]={
 125     &vf_info_rectangle,
 126 #ifdef HAVE_POSIX_SELECT
 127     &vf_info_bmovl,
 128 #endif
 129     &vf_info_crop,
 130     &vf_info_expand,
 131 #ifdef CONFIG_LIBPOSTPROC
 132     &vf_info_pp,
 133 #endif
 134     &vf_info_scale,
 135 //    &vf_info_osd,
 136     &vf_info_vo,
 137     &vf_info_format,
 138     &vf_info_noformat,
 139 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 140     &vf_info_yuy2,
 141 #endif
 142     &vf_info_flip,
 143 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 144     &vf_info_rgb2bgr,
 145 #endif
 146     &vf_info_rotate,
 147     &vf_info_mirror,
 148 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 149     &vf_info_palette,
 150 #endif
 151     &vf_info_pp7,
 152 #ifdef CONFIG_LIBAVCODEC
 153     &vf_info_lavc,
 154     &vf_info_lavcdeint,
 155     &vf_info_screenshot,
 156     &vf_info_uspp,
 157 #endif
 158 #ifdef CONFIG_ZR
 159     &vf_info_zrmjpeg,
 160 #endif
 161     &vf_info_dvbscale,
 162     &vf_info_cropdetect,
 163     &vf_info_test,
 164     &vf_info_noise,
 165     &vf_info_yvu9,
 166     &vf_info_eq,
 167     &vf_info_eq2,
 168     &vf_info_gradfun,
 169 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 170     &vf_info_halfpack,
 171 #endif
 172     &vf_info_dint,
 173     &vf_info_1bpp,
 174     &vf_info_2xsai,
 175     &vf_info_unsharp,
 176     &vf_info_swapuv,
 177     &vf_info_il,
 178     &vf_info_fil,
 179     &vf_info_boxblur,
 180     &vf_info_sab,
 181     &vf_info_smartblur,
 182     &vf_info_perspective,
 183     &vf_info_down3dright,
 184     &vf_info_field,
 185     &vf_info_denoise3d,
 186     &vf_info_hqdn3d,
 187     &vf_info_detc,
 188     &vf_info_telecine,
 189     &vf_info_tinterlace,
 190     &vf_info_tfields,
 191     &vf_info_ivtc,
 192     &vf_info_ilpack,
 193     &vf_info_dsize,
 194     &vf_info_decimate,
 195     &vf_info_softpulldown,
 196     &vf_info_pullup,
 197     &vf_info_filmdint,
 198     &vf_info_framestep,
 199     &vf_info_tile,
 200     &vf_info_delogo,
 201     &vf_info_remove_logo,
 202     &vf_info_hue,
 203 #ifdef CONFIG_LIBAVCODEC_INTERNALS
 204     &vf_info_spp,
 205     &vf_info_fspp,
 206     &vf_info_qp,
 207     &vf_info_mcdeint,
 208     &vf_info_geq,
 209 #endif
 210     &vf_info_yuvcsp,
 211     &vf_info_kerndeint,
 212     &vf_info_rgbtest,
 213     &vf_info_phase,
 214     &vf_info_divtc,
 215     &vf_info_harddup,
 216     &vf_info_softskip,
 217 #ifdef CONFIG_ASS
 218     &vf_info_ass,
 219 #endif
 220     &vf_info_yadif,
 221     &vf_info_blackframe,
 222     &vf_info_ow,
 223     &vf_info_fixpts,
 224     NULL
 225 };
 226
 227 // For the vf option
 228 const m_obj_list_t vf_obj_list = {
 229   (void**)filter_list,
 230   M_ST_OFF(vf_info_t,name),
 231   M_ST_OFF(vf_info_t,info),
 232   M_ST_OFF(vf_info_t,opts)
 233 };
 234
 235 //============================================================================
 236 // mpi stuff:
 237
 238 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 239     int y;
 240     if(mpi->flags&MP_IMGFLAG_PLANAR){
 241         y0&=~1;h+=h&1;
 242         if(x0==0 && w==mpi->width){
 243             // full width clear:
 244             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 245             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 246             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 247         } else
 248         for(y=y0;y<y0+h;y+=2){
 249             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 250             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 251             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 252             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 253         }
 254         return;
 255     }
 256     // packed:
 257     for(y=y0;y<y0+h;y++){
 258         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 259         if(mpi->flags&MP_IMGFLAG_YUV){
 260             unsigned int* p=(unsigned int*) dst;
 261             int size=(mpi->bpp>>3)*w/4;
 262             int i;
 263 #if HAVE_BIGENDIAN
 264 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 265 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 266 #else
 267 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 268 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 269 #endif
 270             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 271                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 272                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 273             } else {
 274                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 275                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 276             }
 277         } else
 278             memset(dst,0,(mpi->bpp>>3)*w);
 279     }
 280 }
 281
 282 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 283   mp_image_t* mpi=NULL;
 284   int w2;
 285   int number = mp_imgtype >> 16;
 286
 287 #ifdef MP_DEBUG
 288   assert(w == -1 || w >= vf->w);
 289   assert(h == -1 || h >= vf->h);
 290   assert(vf->w > 0);
 291   assert(vf->h > 0);
 292 #endif
 293
 294 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 295
 296   if (w == -1) w = vf->w;
 297   if (h == -1) h = vf->h;
 298
 299   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 300
 301   if(vf->put_image==vf_next_put_image){
 302       // passthru mode, if the filter uses the fallback/default put_image() code
 303       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 304   }
 305
 306   // Note: we should call libvo first to check if it supports direct rendering
 307   // and if not, then fallback to software buffers:
 308   switch(mp_imgtype & 0xff){
 309   case MP_IMGTYPE_EXPORT:
 310     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 311     mpi=vf->imgctx.export_images[0];
 312     break;
 313   case MP_IMGTYPE_STATIC:
 314     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 315     mpi=vf->imgctx.static_images[0];
 316     break;
 317   case MP_IMGTYPE_TEMP:
 318     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 319     mpi=vf->imgctx.temp_images[0];
 320     break;
 321   case MP_IMGTYPE_IPB:
 322     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 323       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 324       mpi=vf->imgctx.temp_images[0];
 325       break;
 326     }
 327   case MP_IMGTYPE_IP:
 328     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 329     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 330     vf->imgctx.static_idx^=1;
 331     break;
 332   case MP_IMGTYPE_NUMBERED:
 333     if (number == -1) {
 334       int i;
 335       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 336         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 337           break;
 338       number = i;
 339     }
 340     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 341     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 342     mpi = vf->imgctx.numbered_images[number];
 343     mpi->number = number;
 344     break;
 345   }
 346   if(mpi){
 347     mpi->type=mp_imgtype;
 348     mpi->w=vf->w; mpi->h=vf->h;
 349     // keep buffer allocation status & color flags only:
 350 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 351     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 352     // accept restrictions, draw_slice and palette flags only:
 353     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK|MP_IMGFLAG_RGB_PALETTE);
 354     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 355     if(mpi->width!=w2 || mpi->height!=h){
 356 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 357         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 358             if(mpi->width<w2 || mpi->height<h){
 359                 // need to re-allocate buffer memory:
 360                 av_free(mpi->planes[0]);
 361                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 362                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 363             }
 364 //      } else {
 365         } {
 366             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 367             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 368         }
 369     }
 370     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 371     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 372
 373         // check libvo first!
 374         if(vf->get_image) vf->get_image(vf,mpi);
 375
 376         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 377           // non-direct and not yet allocated image. allocate it!
 378           if (!mpi->bpp) { // no way we can allocate this
 379               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 380                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 381               return NULL;
 382           }
 383
 384           // check if codec prefer aligned stride:
 385           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 386               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 387                          mpi->flags&MP_IMGFLAG_YUV) ?
 388                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 389               w2=((w+align)&(~align));
 390               if(mpi->width!=w2){
 391                   // we have to change width... check if we CAN co it:
 392                   int flags=vf->query_format(vf,outfmt); // should not fail
 393                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 394 //                printf("query -> 0x%X    \n",flags);
 395                   if(flags&VFCAP_ACCEPT_STRIDE){
 396                       mpi->width=w2;
 397                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 398                   }
 399               }
 400           }
 401
 402           mp_image_alloc_planes(mpi);
 403 //        printf("clearing img!\n");
 404           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 405         }
 406     }
 407     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 408         if(vf->start_slice) vf->start_slice(vf,mpi);
 409     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 410             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 411                   vf->info->name,
 412                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 413                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 414                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 415                   mpi->width,mpi->height,mpi->bpp,
 416                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 417                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 418                   mpi->bpp*mpi->width*mpi->height/8);
 419             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",
 420                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 421                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 422                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 423             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 424     }
 425
 426   mpi->qscale = NULL;
 427   }
 428   mpi->usage_count++;
 429 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 430 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 431 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 432   return mpi;
 433 }
 434
 435 //============================================================================
 436
 437 // By default vf doesn't accept MPEGPES
 438 static int vf_default_query_format(struct vf_instance* vf, unsigned int fmt){
 439   if(fmt == IMGFMT_MPEGPES) return 0;
 440   return vf_next_query_format(vf,fmt);
 441 }
 442
 443 struct vf_instance *vf_open_plugin_noerr(struct MPOpts *opts,
 444                                          const vf_info_t * const *filter_list,
 445                                          vf_instance_t *next, const char *name,
 446                                          char **args, int *retcode)
 447 {
 448     vf_instance_t* vf;
 449     int i;
 450     for(i=0;;i++){
 451         if(!filter_list[i]){
 452             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Couldn't find video filter '%s'.\n",name);
 453             return NULL; // no such filter!
 454         }
 455         if(!strcmp(filter_list[i]->name,name)) break;
 456     }
 457     vf = calloc(1, sizeof *vf);
 458     vf->opts = opts;
 459     vf->info=filter_list[i];
 460     vf->next=next;
 461     vf->config=vf_next_config;
 462     vf->control=vf_next_control;
 463     vf->query_format=vf_default_query_format;
 464     vf->put_image=vf_next_put_image;
 465     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 466     vf->default_reqs=0;
 467     if(vf->info->opts) { // vf_vo get some special argument
 468       const m_struct_t* st = vf->info->opts;
 469       void* vf_priv = m_struct_alloc(st);
 470       int n;
 471       for(n = 0 ; args && args[2*n] ; n++)
 472         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 473       vf->priv = vf_priv;
 474       args = NULL;
 475     } else // Otherwise we should have the '_oldargs_'
 476       if(args && !strcmp(args[0],"_oldargs_"))
 477         args = (char**)args[1];
 478       else
 479         args = NULL;
 480     *retcode = vf->info->vf_open(vf,(char*)args);
 481     if (*retcode > 0)
 482         return vf;
 483     free(vf);
 484     return NULL;
 485 }
 486
 487 struct vf_instance *vf_open_plugin(struct MPOpts *opts,
 488                                    const vf_info_t * const *filter_list,
 489                                    vf_instance_t *next, const char *name,
 490                                    char **args)
 491 {
 492     struct vf_instance *vf = vf_open_plugin_noerr(opts, filter_list, next,
 493                                                   name, args, &(int){0});
 494     if (!vf)
 495         mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Couldn't open video filter '%s'.\n",
 496                 name);
 497     return vf;
 498 }
 499
 500 vf_instance_t* vf_open_filter(struct MPOpts *opts, vf_instance_t* next, const char *name, char **args){
 501   if(args && strcmp(args[0],"_oldargs_")) {
 502     int i,l = 0;
 503     for(i = 0 ; args && args[2*i] ; i++)
 504       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 505     l += strlen(name);
 506     {
 507       char str[l+1];
 508       char* p = str;
 509       p += sprintf(str,"%s",name);
 510       for(i = 0 ; args && args[2*i] ; i++)
 511         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 512       mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 513              mp_gtext("Opening video filter: "), str);
 514     }
 515   } else if(strcmp(name,"vo")) {
 516     if(args && strcmp(args[0],"_oldargs_") == 0)
 517         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s=%s]\n",
 518                mp_gtext("Opening video filter: "), name, args[1]);
 519     else
 520         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 521                mp_gtext("Opening video filter: "), name);
 522   }
 523   return vf_open_plugin(opts, filter_list,next,name,args);
 524 }
 525
 526 /**
 527  * \brief adds a filter before the last one (which should be the vo filter).
 528  * \param vf start of the filter chain.
 529  * \param name name of the filter to add.
 530  * \param args argument list for the filter.
 531  * \return pointer to the filter instance that was created.
 532  */
 533 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 534   struct MPOpts *opts = (*vf)->opts;
 535   vf_instance_t *vo, *prev = NULL, *new;
 536   // Find the last filter (should be vf_vo)
 537   for (vo = *vf; vo->next; vo = vo->next)
 538     prev = vo;
 539   new = vf_open_filter(opts, vo, name, args);
 540   if (prev)
 541     prev->next = new;
 542   else
 543     *vf = new;
 544   return new;
 545 }
 546
 547 //============================================================================
 548
 549 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 550     vf_instance_t* vf=*vfp;
 551     struct MPOpts *opts = vf->opts;
 552     const unsigned int* p;
 553     unsigned int best=0;
 554     int ret;
 555     if((p=list)) while(*p){
 556         ret=vf->query_format(vf,*p);
 557         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 558         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 559         if(ret&1 && !best) best=*p; // best with conversion
 560         ++p;
 561     }
 562     if(best) return best; // bingo, they have common csp!
 563     // ok, then try with scale:
 564     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 565     vf=vf_open_filter(opts, vf,"scale",NULL);
 566     if(!vf) return 0; // failed to init "scale"
 567     // try the preferred csp first:
 568     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 569     // try the list again, now with "scaler" :
 570     if((p=list)) while(*p){
 571         ret=vf->query_format(vf,*p);
 572         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 573         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 574         if(ret&1 && !best) best=*p; // best with conversion
 575         ++p;
 576     }
 577     if(best) *vfp=vf; // else uninit vf  !FIXME!
 578     return best;
 579 }
 580
 581 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 582     dst->pict_type= src->pict_type;
 583     dst->fields = src->fields;
 584     dst->qscale_type= src->qscale_type;
 585     if(dst->width == src->width && dst->height == src->height){
 586         dst->qstride= src->qstride;
 587         dst->qscale= src->qscale;
 588     }
 589 }
 590
 591 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 592 {
 593     vf->continue_buffered_image = func;
 594 }
 595
 596 // Output the next buffered image (if any) from the filter chain.
 597 // The queue could be kept as a simple stack/list instead avoiding the
 598 // looping here, but there's currently no good context variable where
 599 // that could be stored so this was easier to implement.
 600
 601 int vf_output_queued_frame(vf_instance_t *vf)
 602 {
 603     while (1) {
 604         int ret;
 605         vf_instance_t *current;
 606         vf_instance_t *last=NULL;
 607         int (*tmp)(vf_instance_t *);
 608         for (current = vf; current; current = current->next)
 609             if (current->continue_buffered_image)
 610                 last = current;
 611         if (!last)
 612             return 0;
 613         tmp = last->continue_buffered_image;
 614         last->continue_buffered_image = NULL;
 615         ret = tmp(last);
 616         if (ret)
 617             return ret;
 618     }
 619 }
 620
 621
 622 /**
 623  * \brief Video config() function wrapper
 624  *
 625  * Blocks config() calls with different size or format for filters
 626  * with VFCAP_CONSTANT
 627  *
 628  * First call is redirected to vf->config.
 629  *
 630  * In following calls, it verifies that the configuration parameters
 631  * are unchanged, and returns either success or error.
 632  *
 633 */
 634 int vf_config_wrapper(struct vf_instance* vf,
 635                     int width, int height, int d_width, int d_height,
 636                     unsigned int flags, unsigned int outfmt)
 637 {
 638     int r;
 639     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 640         if ((vf->fmt.orig_width != width)
 641             || (vf->fmt.orig_height != height)
 642             || (vf->fmt.orig_fmt != outfmt)) {
 643             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"\nNew video file has different resolution or colorspace than the previous one.\n");
 644             return 0;
 645         }
 646         return 1;
 647     }
 648     vf->fmt.have_configured = 1;
 649     vf->fmt.orig_height = height;
 650     vf->fmt.orig_width = width;
 651     vf->fmt.orig_fmt = outfmt;
 652     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 653     if (!r) vf->fmt.have_configured = 0;
 654     return r;
 655 }
 656
 657 int vf_next_config(struct vf_instance* vf,
 658         int width, int height, int d_width, int d_height,
 659         unsigned int voflags, unsigned int outfmt){
 660     struct MPOpts *opts = vf->opts;
 661     int miss;
 662     int flags=vf->next->query_format(vf->next,outfmt);
 663     if(!flags){
 664         // hmm. colorspace mismatch!!!
 665         // let's insert the 'scale' filter, it does the job for us:
 666         vf_instance_t* vf2;
 667         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 668         vf2=vf_open_filter(opts, vf->next,"scale",NULL);
 669         if(!vf2) return 0; // shouldn't happen!
 670         vf->next=vf2;
 671         flags=vf->next->query_format(vf->next,outfmt);
 672         if(!flags){
 673             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Cannot find matching colorspace, even by inserting 'scale' :(\n");
 674             return 0; // FAIL
 675         }
 676     }
 677     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 678     miss=vf->default_reqs - (flags&vf->default_reqs);
 679     if(miss&VFCAP_ACCEPT_STRIDE){
 680         // vf requires stride support but vf->next doesn't support it!
 681         // let's insert the 'expand' filter, it does the job for us:
 682         vf_instance_t* vf2=vf_open_filter(opts, vf->next,"expand",NULL);
 683         if(!vf2) return 0; // shouldn't happen!
 684         vf->next=vf2;
 685     }
 686     vf->next->w = width; vf->next->h = height;
 687     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 688 }
 689
 690 int vf_next_control(struct vf_instance* vf, int request, void* data){
 691     return vf->next->control(vf->next,request,data);
 692 }
 693
 694 int vf_next_query_format(struct vf_instance* vf, unsigned int fmt){
 695     int flags=vf->next->query_format(vf->next,fmt);
 696     if(flags) flags|=vf->default_caps;
 697     return flags;
 698 }
 699
 700 int vf_next_put_image(struct vf_instance* vf,mp_image_t *mpi, double pts){
 701     return vf->next->put_image(vf->next,mpi, pts);
 702 }
 703
 704 void vf_next_draw_slice(struct vf_instance* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 705     if (vf->next->draw_slice) {
 706         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 707         return;
 708     }
 709     if (!vf->dmpi) {
 710         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 711         return;
 712     }
 713     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 714         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 715             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 716         return;
 717     }
 718     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 719         w, h, vf->dmpi->stride[0], stride[0]);
 720     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 721         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 722     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 723         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 724 }
 725
 726 //============================================================================
 727
 728 vf_instance_t *append_filters(vf_instance_t* last,
 729                               struct m_obj_settings *vf_settings)
 730 {
 731   struct MPOpts *opts = last->opts;
 732   vf_instance_t* vf;
 733   int i;
 734
 735   if(vf_settings) {
 736     // We want to add them in the 'right order'
 737     for(i = 0 ; vf_settings[i].name ; i++)
 738       /* NOP */;
 739     for(i-- ; i >= 0 ; i--) {
 740       //printf("Open filter %s\n",vf_settings[i].name);
 741       vf = vf_open_filter(opts, last,vf_settings[i].name,vf_settings[i].attribs);
 742       if(vf) last=vf;
 743     }
 744   }
 745   return last;
 746 }
 747
 748 //============================================================================
 749
 750 void vf_uninit_filter(vf_instance_t* vf){
 751     if(vf->uninit) vf->uninit(vf);
 752     free_mp_image(vf->imgctx.static_images[0]);
 753     free_mp_image(vf->imgctx.static_images[1]);
 754     free_mp_image(vf->imgctx.temp_images[0]);
 755     free_mp_image(vf->imgctx.export_images[0]);
 756     for (int i = 0; i < NUM_NUMBERED_MPI; i++)
 757         free_mp_image(vf->imgctx.numbered_images[i]);
 758     free(vf);
 759 }
 760
 761 void vf_uninit_filter_chain(vf_instance_t* vf){
 762     while(vf){
 763         vf_instance_t* next=vf->next;
 764         vf_uninit_filter(vf);
 765         vf=next;
 766     }
 767 }