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 extern const vf_info_t vf_info_stereo3d;
 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     &vf_info_scale,
 131 //    &vf_info_osd,
 132     &vf_info_vo,
 133     &vf_info_format,
 134     &vf_info_noformat,
 135     &vf_info_flip,
 136     &vf_info_rotate,
 137     &vf_info_mirror,
 138     &vf_info_palette,
 139     &vf_info_pp7,
 140 #ifdef CONFIG_FFMPEG
 141     &vf_info_pp,
 142     &vf_info_lavc,
 143     &vf_info_lavcdeint,
 144     &vf_info_screenshot,
 145     &vf_info_uspp,
 146 #endif
 147 #ifdef CONFIG_ZR
 148     &vf_info_zrmjpeg,
 149 #endif
 150     &vf_info_dvbscale,
 151     &vf_info_cropdetect,
 152     &vf_info_test,
 153     &vf_info_noise,
 154     &vf_info_yvu9,
 155     &vf_info_eq,
 156     &vf_info_eq2,
 157     &vf_info_gradfun,
 158     &vf_info_halfpack,
 159     &vf_info_dint,
 160     &vf_info_1bpp,
 161     &vf_info_2xsai,
 162     &vf_info_unsharp,
 163     &vf_info_swapuv,
 164     &vf_info_il,
 165     &vf_info_fil,
 166     &vf_info_boxblur,
 167     &vf_info_sab,
 168     &vf_info_smartblur,
 169     &vf_info_perspective,
 170     &vf_info_down3dright,
 171     &vf_info_field,
 172     &vf_info_denoise3d,
 173     &vf_info_hqdn3d,
 174     &vf_info_detc,
 175     &vf_info_telecine,
 176     &vf_info_tinterlace,
 177     &vf_info_tfields,
 178     &vf_info_ivtc,
 179     &vf_info_ilpack,
 180     &vf_info_dsize,
 181     &vf_info_decimate,
 182     &vf_info_softpulldown,
 183     &vf_info_pullup,
 184     &vf_info_filmdint,
 185     &vf_info_framestep,
 186     &vf_info_tile,
 187     &vf_info_delogo,
 188     &vf_info_remove_logo,
 189     &vf_info_hue,
 190 #ifdef CONFIG_FFMPEG_INTERNALS
 191     &vf_info_spp,
 192     &vf_info_fspp,
 193     &vf_info_qp,
 194     &vf_info_mcdeint,
 195 #endif
 196 #ifdef CONFIG_FFMPEG_EVAL_API
 197     &vf_info_geq,
 198 #endif
 199     &vf_info_yuvcsp,
 200     &vf_info_kerndeint,
 201     &vf_info_rgbtest,
 202     &vf_info_phase,
 203     &vf_info_divtc,
 204     &vf_info_harddup,
 205     &vf_info_softskip,
 206 #ifdef CONFIG_ASS
 207     &vf_info_ass,
 208 #endif
 209     &vf_info_yadif,
 210     &vf_info_blackframe,
 211     &vf_info_ow,
 212     &vf_info_fixpts,
 213     &vf_info_stereo3d,
 214     NULL
 215 };
 216
 217 // For the vf option
 218 const m_obj_list_t vf_obj_list = {
 219   (void**)filter_list,
 220   M_ST_OFF(vf_info_t,name),
 221   M_ST_OFF(vf_info_t,info),
 222   M_ST_OFF(vf_info_t,opts)
 223 };
 224
 225 //============================================================================
 226 // mpi stuff:
 227
 228 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 229     int y;
 230     if(mpi->flags&MP_IMGFLAG_PLANAR){
 231         y0&=~1;h+=h&1;
 232         if(x0==0 && w==mpi->width){
 233             // full width clear:
 234             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 235             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 236             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 237         } else
 238         for(y=y0;y<y0+h;y+=2){
 239             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 240             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 241             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 242             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 243         }
 244         return;
 245     }
 246     // packed:
 247     for(y=y0;y<y0+h;y++){
 248         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 249         if(mpi->flags&MP_IMGFLAG_YUV){
 250             unsigned int* p=(unsigned int*) dst;
 251             int size=(mpi->bpp>>3)*w/4;
 252             int i;
 253 #if HAVE_BIGENDIAN
 254 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 255 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 256 #else
 257 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 258 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 259 #endif
 260             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 261                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 262                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 263             } else {
 264                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 265                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 266             }
 267         } else
 268             memset(dst,0,(mpi->bpp>>3)*w);
 269     }
 270 }
 271
 272 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 273   mp_image_t* mpi=NULL;
 274   int w2;
 275   int number = mp_imgtype >> 16;
 276
 277 #ifdef MP_DEBUG
 278   assert(w == -1 || w >= vf->w);
 279   assert(h == -1 || h >= vf->h);
 280   assert(vf->w > 0);
 281   assert(vf->h > 0);
 282 #endif
 283
 284 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 285
 286   if (w == -1) w = vf->w;
 287   if (h == -1) h = vf->h;
 288
 289   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 290
 291   if(vf->put_image==vf_next_put_image){
 292       // passthru mode, if the filter uses the fallback/default put_image() code
 293       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 294   }
 295
 296   // Note: we should call libvo first to check if it supports direct rendering
 297   // and if not, then fallback to software buffers:
 298   switch(mp_imgtype & 0xff){
 299   case MP_IMGTYPE_EXPORT:
 300     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 301     mpi=vf->imgctx.export_images[0];
 302     break;
 303   case MP_IMGTYPE_STATIC:
 304     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 305     mpi=vf->imgctx.static_images[0];
 306     break;
 307   case MP_IMGTYPE_TEMP:
 308     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 309     mpi=vf->imgctx.temp_images[0];
 310     break;
 311   case MP_IMGTYPE_IPB:
 312     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 313       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 314       mpi=vf->imgctx.temp_images[0];
 315       break;
 316     }
 317   case MP_IMGTYPE_IP:
 318     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 319     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 320     vf->imgctx.static_idx^=1;
 321     break;
 322   case MP_IMGTYPE_NUMBERED:
 323     if (number == -1) {
 324       int i;
 325       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 326         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 327           break;
 328       number = i;
 329     }
 330     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 331     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 332     mpi = vf->imgctx.numbered_images[number];
 333     mpi->number = number;
 334     break;
 335   }
 336   if(mpi){
 337     mpi->type=mp_imgtype;
 338     mpi->w=vf->w; mpi->h=vf->h;
 339     // keep buffer allocation status & color flags only:
 340 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 341     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 342     // accept restrictions, draw_slice and palette flags only:
 343     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK|MP_IMGFLAG_RGB_PALETTE);
 344     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 345     if(mpi->width!=w2 || mpi->height!=h){
 346 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 347         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 348             if(mpi->width<w2 || mpi->height<h){
 349                 // need to re-allocate buffer memory:
 350                 av_free(mpi->planes[0]);
 351                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 352                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 353             }
 354 //      } else {
 355         } {
 356             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 357             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 358         }
 359     }
 360     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 361     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 362
 363         // check libvo first!
 364         if(vf->get_image) vf->get_image(vf,mpi);
 365
 366         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 367           // non-direct and not yet allocated image. allocate it!
 368           if (!mpi->bpp) { // no way we can allocate this
 369               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 370                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 371               return NULL;
 372           }
 373
 374           // check if codec prefer aligned stride:
 375           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 376               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 377                          mpi->flags&MP_IMGFLAG_YUV) ?
 378                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 379               w2=((w+align)&(~align));
 380               if(mpi->width!=w2){
 381                   // we have to change width... check if we CAN co it:
 382                   int flags=vf->query_format(vf,outfmt); // should not fail
 383                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 384 //                printf("query -> 0x%X    \n",flags);
 385                   if(flags&VFCAP_ACCEPT_STRIDE){
 386                       mpi->width=w2;
 387                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 388                   }
 389               }
 390           }
 391
 392           mp_image_alloc_planes(mpi);
 393 //        printf("clearing img!\n");
 394           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 395         }
 396     }
 397     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 398         if(vf->start_slice) vf->start_slice(vf,mpi);
 399     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 400             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 401                   vf->info->name,
 402                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 403                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 404                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 405                   mpi->width,mpi->height,mpi->bpp,
 406                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 407                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 408                   mpi->bpp*mpi->width*mpi->height/8);
 409             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",
 410                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 411                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 412                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 413             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 414     }
 415
 416   mpi->qscale = NULL;
 417   }
 418   mpi->usage_count++;
 419 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 420 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 421 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 422   return mpi;
 423 }
 424
 425 //============================================================================
 426
 427 // By default vf doesn't accept MPEGPES
 428 static int vf_default_query_format(struct vf_instance *vf, unsigned int fmt){
 429   if(fmt == IMGFMT_MPEGPES) return 0;
 430   return vf_next_query_format(vf,fmt);
 431 }
 432
 433 struct vf_instance *vf_open_plugin_noerr(struct MPOpts *opts,
 434                                          const vf_info_t * const *filter_list,
 435                                          vf_instance_t *next, const char *name,
 436                                          char **args, int *retcode)
 437 {
 438     vf_instance_t* vf;
 439     int i;
 440     for(i=0;;i++){
 441         if(!filter_list[i]){
 442             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Couldn't find video filter '%s'.\n",name);
 443             return NULL; // no such filter!
 444         }
 445         if(!strcmp(filter_list[i]->name,name)) break;
 446     }
 447     vf = calloc(1, sizeof *vf);
 448     vf->opts = opts;
 449     vf->info=filter_list[i];
 450     vf->next=next;
 451     vf->config=vf_next_config;
 452     vf->control=vf_next_control;
 453     vf->query_format=vf_default_query_format;
 454     vf->put_image=vf_next_put_image;
 455     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 456     vf->default_reqs=0;
 457     if(vf->info->opts) { // vf_vo get some special argument
 458       const m_struct_t* st = vf->info->opts;
 459       void* vf_priv = m_struct_alloc(st);
 460       int n;
 461       for(n = 0 ; args && args[2*n] ; n++)
 462         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 463       vf->priv = vf_priv;
 464       args = NULL;
 465     } else // Otherwise we should have the '_oldargs_'
 466       if(args && !strcmp(args[0],"_oldargs_"))
 467         args = (char**)args[1];
 468       else
 469         args = NULL;
 470     *retcode = vf->info->vf_open(vf,(char*)args);
 471     if (*retcode > 0)
 472         return vf;
 473     free(vf);
 474     return NULL;
 475 }
 476
 477 struct vf_instance *vf_open_plugin(struct MPOpts *opts,
 478                                    const vf_info_t * const *filter_list,
 479                                    vf_instance_t *next, const char *name,
 480                                    char **args)
 481 {
 482     struct vf_instance *vf = vf_open_plugin_noerr(opts, filter_list, next,
 483                                                   name, args, &(int){0});
 484     if (!vf)
 485         mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Couldn't open video filter '%s'.\n",
 486                 name);
 487     return vf;
 488 }
 489
 490 vf_instance_t* vf_open_filter(struct MPOpts *opts, vf_instance_t* next, const char *name, char **args){
 491   if(args && strcmp(args[0],"_oldargs_")) {
 492     int i,l = 0;
 493     for(i = 0 ; args && args[2*i] ; i++)
 494       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 495     l += strlen(name);
 496     {
 497       char str[l+1];
 498       char* p = str;
 499       p += sprintf(str,"%s",name);
 500       for(i = 0 ; args && args[2*i] ; i++)
 501         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 502       mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 503              mp_gtext("Opening video filter: "), str);
 504     }
 505   } else if(strcmp(name,"vo")) {
 506     if(args && strcmp(args[0],"_oldargs_") == 0)
 507         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s=%s]\n",
 508                mp_gtext("Opening video filter: "), name, args[1]);
 509     else
 510         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 511                mp_gtext("Opening video filter: "), name);
 512   }
 513   return vf_open_plugin(opts, filter_list,next,name,args);
 514 }
 515
 516 /**
 517  * \brief adds a filter before the last one (which should be the vo filter).
 518  * \param vf start of the filter chain.
 519  * \param name name of the filter to add.
 520  * \param args argument list for the filter.
 521  * \return pointer to the filter instance that was created.
 522  */
 523 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 524   struct MPOpts *opts = (*vf)->opts;
 525   vf_instance_t *vo, *prev = NULL, *new;
 526   // Find the last filter (should be vf_vo)
 527   for (vo = *vf; vo->next; vo = vo->next)
 528     prev = vo;
 529   new = vf_open_filter(opts, vo, name, args);
 530   if (prev)
 531     prev->next = new;
 532   else
 533     *vf = new;
 534   return new;
 535 }
 536
 537 //============================================================================
 538
 539 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 540     vf_instance_t* vf=*vfp;
 541     struct MPOpts *opts = vf->opts;
 542     const unsigned int* p;
 543     unsigned int best=0;
 544     int ret;
 545     if((p=list)) while(*p){
 546         ret=vf->query_format(vf,*p);
 547         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 548         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 549         if(ret&1 && !best) best=*p; // best with conversion
 550         ++p;
 551     }
 552     if(best) return best; // bingo, they have common csp!
 553     // ok, then try with scale:
 554     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 555     vf=vf_open_filter(opts, vf,"scale",NULL);
 556     if(!vf) return 0; // failed to init "scale"
 557     // try the preferred csp first:
 558     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 559     // try the list again, now with "scaler" :
 560     if((p=list)) while(*p){
 561         ret=vf->query_format(vf,*p);
 562         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 563         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 564         if(ret&1 && !best) best=*p; // best with conversion
 565         ++p;
 566     }
 567     if(best) *vfp=vf; // else uninit vf  !FIXME!
 568     return best;
 569 }
 570
 571 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 572     dst->pict_type= src->pict_type;
 573     dst->fields = src->fields;
 574     dst->qscale_type= src->qscale_type;
 575     if(dst->width == src->width && dst->height == src->height){
 576         dst->qstride= src->qstride;
 577         dst->qscale= src->qscale;
 578     }
 579 }
 580
 581 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 582 {
 583     vf->continue_buffered_image = func;
 584 }
 585
 586 // Output the next buffered image (if any) from the filter chain.
 587 // The queue could be kept as a simple stack/list instead avoiding the
 588 // looping here, but there's currently no good context variable where
 589 // that could be stored so this was easier to implement.
 590
 591 int vf_output_queued_frame(vf_instance_t *vf)
 592 {
 593     while (1) {
 594         int ret;
 595         vf_instance_t *current;
 596         vf_instance_t *last=NULL;
 597         int (*tmp)(vf_instance_t *);
 598         for (current = vf; current; current = current->next)
 599             if (current->continue_buffered_image)
 600                 last = current;
 601         if (!last)
 602             return 0;
 603         tmp = last->continue_buffered_image;
 604         last->continue_buffered_image = NULL;
 605         ret = tmp(last);
 606         if (ret)
 607             return ret;
 608     }
 609 }
 610
 611
 612 /**
 613  * \brief Video config() function wrapper
 614  *
 615  * Blocks config() calls with different size or format for filters
 616  * with VFCAP_CONSTANT
 617  *
 618  * First call is redirected to vf->config.
 619  *
 620  * In following calls, it verifies that the configuration parameters
 621  * are unchanged, and returns either success or error.
 622  *
 623 */
 624 int vf_config_wrapper(struct vf_instance *vf,
 625                     int width, int height, int d_width, int d_height,
 626                     unsigned int flags, unsigned int outfmt)
 627 {
 628     int r;
 629     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 630         if ((vf->fmt.orig_width != width)
 631             || (vf->fmt.orig_height != height)
 632             || (vf->fmt.orig_fmt != outfmt)) {
 633             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"\nNew video file has different resolution or colorspace than the previous one.\n");
 634             return 0;
 635         }
 636         return 1;
 637     }
 638     vf->fmt.have_configured = 1;
 639     vf->fmt.orig_height = height;
 640     vf->fmt.orig_width = width;
 641     vf->fmt.orig_fmt = outfmt;
 642     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 643     if (!r) vf->fmt.have_configured = 0;
 644     return r;
 645 }
 646
 647 int vf_next_config(struct vf_instance *vf,
 648         int width, int height, int d_width, int d_height,
 649         unsigned int voflags, unsigned int outfmt){
 650     struct MPOpts *opts = vf->opts;
 651     int miss;
 652     int flags=vf->next->query_format(vf->next,outfmt);
 653     if(!flags){
 654         // hmm. colorspace mismatch!!!
 655         // let's insert the 'scale' filter, it does the job for us:
 656         vf_instance_t* vf2;
 657         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 658         vf2=vf_open_filter(opts, vf->next,"scale",NULL);
 659         if(!vf2) return 0; // shouldn't happen!
 660         vf->next=vf2;
 661         flags=vf->next->query_format(vf->next,outfmt);
 662         if(!flags){
 663             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Cannot find matching colorspace, even by inserting 'scale' :(\n");
 664             return 0; // FAIL
 665         }
 666     }
 667     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 668     miss=vf->default_reqs - (flags&vf->default_reqs);
 669     if(miss&VFCAP_ACCEPT_STRIDE){
 670         // vf requires stride support but vf->next doesn't support it!
 671         // let's insert the 'expand' filter, it does the job for us:
 672         vf_instance_t* vf2=vf_open_filter(opts, vf->next,"expand",NULL);
 673         if(!vf2) return 0; // shouldn't happen!
 674         vf->next=vf2;
 675     }
 676     vf->next->w = width; vf->next->h = height;
 677     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 678 }
 679
 680 int vf_next_control(struct vf_instance *vf, int request, void* data){
 681     return vf->next->control(vf->next,request,data);
 682 }
 683
 684 int vf_next_query_format(struct vf_instance *vf, unsigned int fmt){
 685     int flags=vf->next->query_format(vf->next,fmt);
 686     if(flags) flags|=vf->default_caps;
 687     return flags;
 688 }
 689
 690 int vf_next_put_image(struct vf_instance *vf,mp_image_t *mpi, double pts){
 691     return vf->next->put_image(vf->next,mpi, pts);
 692 }
 693
 694 void vf_next_draw_slice(struct vf_instance *vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 695     if (vf->next->draw_slice) {
 696         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 697         return;
 698     }
 699     if (!vf->dmpi) {
 700         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 701         return;
 702     }
 703     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 704         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 705             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 706         return;
 707     }
 708     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 709         w, h, vf->dmpi->stride[0], stride[0]);
 710     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 711         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 712     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 713         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 714 }
 715
 716 //============================================================================
 717
 718 vf_instance_t *append_filters(vf_instance_t* last,
 719                               struct m_obj_settings *vf_settings)
 720 {
 721   struct MPOpts *opts = last->opts;
 722   vf_instance_t* vf;
 723   int i;
 724
 725   if(vf_settings) {
 726     // We want to add them in the 'right order'
 727     for(i = 0 ; vf_settings[i].name ; i++)
 728       /* NOP */;
 729     for(i-- ; i >= 0 ; i--) {
 730       //printf("Open filter %s\n",vf_settings[i].name);
 731       vf = vf_open_filter(opts, last,vf_settings[i].name,vf_settings[i].attribs);
 732       if(vf) last=vf;
 733     }
 734   }
 735   return last;
 736 }
 737
 738 //============================================================================
 739
 740 void vf_uninit_filter(vf_instance_t* vf){
 741     if(vf->uninit) vf->uninit(vf);
 742     free_mp_image(vf->imgctx.static_images[0]);
 743     free_mp_image(vf->imgctx.static_images[1]);
 744     free_mp_image(vf->imgctx.temp_images[0]);
 745     free_mp_image(vf->imgctx.export_images[0]);
 746     for (int i = 0; i < NUM_NUMBERED_MPI; i++)
 747         free_mp_image(vf->imgctx.numbered_images[i]);
 748     free(vf);
 749 }
 750
 751 void vf_uninit_filter_chain(vf_instance_t* vf){
 752     while(vf){
 753         vf_instance_t* next=vf->next;
 754         vf_uninit_filter(vf);
 755         vf=next;
 756     }
 757 }