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