libmpcodecs/vf.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "config.h"
   6 #if HAVE_MALLOC_H
   7 #include <malloc.h>
   8 #endif
   9
  10 #ifdef MP_DEBUG
  11 #include <assert.h>
  12 #endif
  13
  14 #include "mp_msg.h"
  15 #include "help_mp.h"
  16 #include "m_option.h"
  17 #include "m_struct.h"
  18
  19
  20 #include "img_format.h"
  21 #include "mp_image.h"
  22 #include "vf.h"
  23
  24 #include "libvo/fastmemcpy.h"
  25
  26 extern const vf_info_t vf_info_vo;
  27 extern const vf_info_t vf_info_rectangle;
  28 extern const vf_info_t vf_info_bmovl;
  29 extern const vf_info_t vf_info_crop;
  30 extern const vf_info_t vf_info_expand;
  31 extern const vf_info_t vf_info_pp;
  32 extern const vf_info_t vf_info_scale;
  33 extern const vf_info_t vf_info_format;
  34 extern const vf_info_t vf_info_noformat;
  35 extern const vf_info_t vf_info_yuy2;
  36 extern const vf_info_t vf_info_flip;
  37 extern const vf_info_t vf_info_rgb2bgr;
  38 extern const vf_info_t vf_info_rotate;
  39 extern const vf_info_t vf_info_mirror;
  40 extern const vf_info_t vf_info_palette;
  41 extern const vf_info_t vf_info_lavc;
  42 extern const vf_info_t vf_info_zrmjpeg;
  43 extern const vf_info_t vf_info_dvbscale;
  44 extern const vf_info_t vf_info_cropdetect;
  45 extern const vf_info_t vf_info_test;
  46 extern const vf_info_t vf_info_noise;
  47 extern const vf_info_t vf_info_yvu9;
  48 extern const vf_info_t vf_info_lavcdeint;
  49 extern const vf_info_t vf_info_eq;
  50 extern const vf_info_t vf_info_eq2;
  51 extern const vf_info_t vf_info_gradfun;
  52 extern const vf_info_t vf_info_halfpack;
  53 extern const vf_info_t vf_info_dint;
  54 extern const vf_info_t vf_info_1bpp;
  55 extern const vf_info_t vf_info_2xsai;
  56 extern const vf_info_t vf_info_unsharp;
  57 extern const vf_info_t vf_info_swapuv;
  58 extern const vf_info_t vf_info_il;
  59 extern const vf_info_t vf_info_fil;
  60 extern const vf_info_t vf_info_boxblur;
  61 extern const vf_info_t vf_info_sab;
  62 extern const vf_info_t vf_info_smartblur;
  63 extern const vf_info_t vf_info_perspective;
  64 extern const vf_info_t vf_info_down3dright;
  65 extern const vf_info_t vf_info_field;
  66 extern const vf_info_t vf_info_denoise3d;
  67 extern const vf_info_t vf_info_hqdn3d;
  68 extern const vf_info_t vf_info_detc;
  69 extern const vf_info_t vf_info_telecine;
  70 extern const vf_info_t vf_info_tinterlace;
  71 extern const vf_info_t vf_info_tfields;
  72 extern const vf_info_t vf_info_ivtc;
  73 extern const vf_info_t vf_info_ilpack;
  74 extern const vf_info_t vf_info_dsize;
  75 extern const vf_info_t vf_info_decimate;
  76 extern const vf_info_t vf_info_softpulldown;
  77 extern const vf_info_t vf_info_pullup;
  78 extern const vf_info_t vf_info_filmdint;
  79 extern const vf_info_t vf_info_framestep;
  80 extern const vf_info_t vf_info_tile;
  81 extern const vf_info_t vf_info_delogo;
  82 extern const vf_info_t vf_info_remove_logo;
  83 extern const vf_info_t vf_info_hue;
  84 extern const vf_info_t vf_info_spp;
  85 extern const vf_info_t vf_info_uspp;
  86 extern const vf_info_t vf_info_fspp;
  87 extern const vf_info_t vf_info_pp7;
  88 extern const vf_info_t vf_info_yuvcsp;
  89 extern const vf_info_t vf_info_kerndeint;
  90 extern const vf_info_t vf_info_rgbtest;
  91 extern const vf_info_t vf_info_qp;
  92 extern const vf_info_t vf_info_phase;
  93 extern const vf_info_t vf_info_divtc;
  94 extern const vf_info_t vf_info_harddup;
  95 extern const vf_info_t vf_info_softskip;
  96 extern const vf_info_t vf_info_screenshot;
  97 extern const vf_info_t vf_info_ass;
  98 extern const vf_info_t vf_info_mcdeint;
  99 extern const vf_info_t vf_info_yadif;
 100 extern const vf_info_t vf_info_blackframe;
 101 extern const vf_info_t vf_info_geq;
 102 extern const vf_info_t vf_info_ow;
 103 extern const vf_info_t vf_info_tcdump;
 104
 105 // list of available filters:
 106 static const vf_info_t* const filter_list[]={
 107     &vf_info_rectangle,
 108 #ifdef HAVE_POSIX_SELECT
 109     &vf_info_bmovl,
 110 #endif
 111     &vf_info_crop,
 112     &vf_info_expand,
 113 #ifdef CONFIG_LIBPOSTPROC
 114     &vf_info_pp,
 115 #endif
 116     &vf_info_scale,
 117 //    &vf_info_osd,
 118     &vf_info_vo,
 119     &vf_info_format,
 120     &vf_info_noformat,
 121 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 122     &vf_info_yuy2,
 123 #endif
 124     &vf_info_flip,
 125 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 126     &vf_info_rgb2bgr,
 127 #endif
 128     &vf_info_rotate,
 129     &vf_info_mirror,
 130 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 131     &vf_info_palette,
 132 #endif
 133     &vf_info_pp7,
 134 #ifdef CONFIG_LIBAVCODEC
 135     &vf_info_lavc,
 136     &vf_info_lavcdeint,
 137     &vf_info_screenshot,
 138     &vf_info_uspp,
 139 #endif
 140 #ifdef CONFIG_ZR
 141     &vf_info_zrmjpeg,
 142 #endif
 143     &vf_info_dvbscale,
 144     &vf_info_cropdetect,
 145     &vf_info_test,
 146     &vf_info_noise,
 147     &vf_info_yvu9,
 148     &vf_info_eq,
 149     &vf_info_eq2,
 150     &vf_info_gradfun,
 151 #ifdef CONFIG_LIBSWSCALE_INTERNALS
 152     &vf_info_halfpack,
 153 #endif
 154     &vf_info_dint,
 155     &vf_info_1bpp,
 156     &vf_info_2xsai,
 157     &vf_info_unsharp,
 158     &vf_info_swapuv,
 159     &vf_info_il,
 160     &vf_info_fil,
 161     &vf_info_boxblur,
 162     &vf_info_sab,
 163     &vf_info_smartblur,
 164     &vf_info_perspective,
 165     &vf_info_down3dright,
 166     &vf_info_field,
 167     &vf_info_denoise3d,
 168     &vf_info_hqdn3d,
 169     &vf_info_detc,
 170     &vf_info_telecine,
 171     &vf_info_tinterlace,
 172     &vf_info_tfields,
 173     &vf_info_ivtc,
 174     &vf_info_ilpack,
 175     &vf_info_dsize,
 176     &vf_info_decimate,
 177     &vf_info_softpulldown,
 178     &vf_info_pullup,
 179     &vf_info_filmdint,
 180     &vf_info_framestep,
 181     &vf_info_tile,
 182     &vf_info_delogo,
 183     &vf_info_remove_logo,
 184     &vf_info_hue,
 185 #ifdef CONFIG_LIBAVCODEC_INTERNALS
 186     &vf_info_spp,
 187     &vf_info_fspp,
 188     &vf_info_qp,
 189     &vf_info_mcdeint,
 190     &vf_info_geq,
 191 #endif
 192     &vf_info_yuvcsp,
 193     &vf_info_kerndeint,
 194     &vf_info_rgbtest,
 195     &vf_info_phase,
 196     &vf_info_divtc,
 197     &vf_info_harddup,
 198     &vf_info_softskip,
 199 #ifdef CONFIG_ASS
 200     &vf_info_ass,
 201 #endif
 202     &vf_info_yadif,
 203     &vf_info_blackframe,
 204     &vf_info_ow,
 205     &vf_info_tcdump,
 206     NULL
 207 };
 208
 209 // For the vf option
 210 const m_obj_list_t vf_obj_list = {
 211   (void**)filter_list,
 212   M_ST_OFF(vf_info_t,name),
 213   M_ST_OFF(vf_info_t,info),
 214   M_ST_OFF(vf_info_t,opts)
 215 };
 216
 217 //============================================================================
 218 // mpi stuff:
 219
 220 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 221     int y;
 222     if(mpi->flags&MP_IMGFLAG_PLANAR){
 223         y0&=~1;h+=h&1;
 224         if(x0==0 && w==mpi->width){
 225             // full width clear:
 226             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 227             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 228             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 229         } else
 230         for(y=y0;y<y0+h;y+=2){
 231             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 232             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 233             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 234             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 235         }
 236         return;
 237     }
 238     // packed:
 239     for(y=y0;y<y0+h;y++){
 240         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 241         if(mpi->flags&MP_IMGFLAG_YUV){
 242             unsigned int* p=(unsigned int*) dst;
 243             int size=(mpi->bpp>>3)*w/4;
 244             int i;
 245 #if HAVE_BIGENDIAN
 246 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 247 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 248 #else
 249 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 250 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 251 #endif
 252             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 253                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 254                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 255             } else {
 256                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 257                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 258             }
 259         } else
 260             memset(dst,0,(mpi->bpp>>3)*w);
 261     }
 262 }
 263
 264 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 265   mp_image_t* mpi=NULL;
 266   int w2;
 267   int number = mp_imgtype >> 16;
 268
 269 #ifdef MP_DEBUG
 270   assert(w == -1 || w >= vf->w);
 271   assert(h == -1 || h >= vf->h);
 272   assert(vf->w > 0);
 273   assert(vf->h > 0);
 274 #endif
 275
 276 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 277
 278   if (w == -1) w = vf->w;
 279   if (h == -1) h = vf->h;
 280
 281   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 282
 283   if(vf->put_image==vf_next_put_image){
 284       // passthru mode, if the filter uses the fallback/default put_image() code
 285       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 286   }
 287
 288   // Note: we should call libvo first to check if it supports direct rendering
 289   // and if not, then fallback to software buffers:
 290   switch(mp_imgtype & 0xff){
 291   case MP_IMGTYPE_EXPORT:
 292     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 293     mpi=vf->imgctx.export_images[0];
 294     break;
 295   case MP_IMGTYPE_STATIC:
 296     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 297     mpi=vf->imgctx.static_images[0];
 298     break;
 299   case MP_IMGTYPE_TEMP:
 300     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 301     mpi=vf->imgctx.temp_images[0];
 302     break;
 303   case MP_IMGTYPE_IPB:
 304     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 305       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 306       mpi=vf->imgctx.temp_images[0];
 307       break;
 308     }
 309   case MP_IMGTYPE_IP:
 310     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 311     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 312     vf->imgctx.static_idx^=1;
 313     break;
 314   case MP_IMGTYPE_NUMBERED:
 315     if (number == -1) {
 316       int i;
 317       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 318         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 319           break;
 320       number = i;
 321     }
 322     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 323     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 324     mpi = vf->imgctx.numbered_images[number];
 325     mpi->number = number;
 326     break;
 327   }
 328   if(mpi){
 329     mpi->type=mp_imgtype;
 330     mpi->w=vf->w; mpi->h=vf->h;
 331     // keep buffer allocation status & color flags only:
 332 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 333     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 334     // accept restrictions, draw_slice and palette flags only:
 335     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK|MP_IMGFLAG_RGB_PALETTE);
 336     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 337     if(mpi->width!=w2 || mpi->height!=h){
 338 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 339         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 340             if(mpi->width<w2 || mpi->height<h){
 341                 // need to re-allocate buffer memory:
 342                 free(mpi->planes[0]);
 343                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 344                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 345             }
 346 //      } else {
 347         } {
 348             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 349             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 350         }
 351     }
 352     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 353     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 354
 355         // check libvo first!
 356         if(vf->get_image) vf->get_image(vf,mpi);
 357
 358         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 359           // non-direct and not yet allocated image. allocate it!
 360           if (!mpi->bpp) { // no way we can allocate this
 361               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 362                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 363               return NULL;
 364           }
 365
 366           // check if codec prefer aligned stride:
 367           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 368               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 369                          mpi->flags&MP_IMGFLAG_YUV) ?
 370                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 371               w2=((w+align)&(~align));
 372               if(mpi->width!=w2){
 373                   // we have to change width... check if we CAN co it:
 374                   int flags=vf->query_format(vf,outfmt); // should not fail
 375                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 376 //                printf("query -> 0x%X    \n",flags);
 377                   if(flags&VFCAP_ACCEPT_STRIDE){
 378                       mpi->width=w2;
 379                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 380                   }
 381               }
 382           }
 383
 384           mp_image_alloc_planes(mpi);
 385 //        printf("clearing img!\n");
 386           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 387         }
 388     }
 389     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 390         if(vf->start_slice) vf->start_slice(vf,mpi);
 391     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 392             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 393                   vf->info->name,
 394                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 395                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 396                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 397                   mpi->width,mpi->height,mpi->bpp,
 398                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 399                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 400                   mpi->bpp*mpi->width*mpi->height/8);
 401             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",
 402                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 403                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 404                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 405             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 406     }
 407
 408   mpi->qscale = NULL;
 409   }
 410   mpi->usage_count++;
 411 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 412 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 413 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 414   return mpi;
 415 }
 416
 417 //============================================================================
 418
 419 // By default vf doesn't accept MPEGPES
 420 static int vf_default_query_format(struct vf_instance* vf, unsigned int fmt){
 421   if(fmt == IMGFMT_MPEGPES) return 0;
 422   return vf_next_query_format(vf,fmt);
 423 }
 424
 425 struct vf_instance *vf_open_plugin_noerr(struct MPOpts *opts,
 426                                          const vf_info_t * const *filter_list,
 427                                          vf_instance_t *next, const char *name,
 428                                          char **args, int *retcode)
 429 {
 430     vf_instance_t* vf;
 431     int i;
 432     for(i=0;;i++){
 433         if(!filter_list[i]){
 434             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Couldn't find video filter '%s'.\n",name);
 435             return NULL; // no such filter!
 436         }
 437         if(!strcmp(filter_list[i]->name,name)) break;
 438     }
 439     vf = calloc(1, sizeof *vf);
 440     vf->opts = opts;
 441     vf->info=filter_list[i];
 442     vf->next=next;
 443     vf->config=vf_next_config;
 444     vf->control=vf_next_control;
 445     vf->query_format=vf_default_query_format;
 446     vf->put_image=vf_next_put_image;
 447     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 448     vf->default_reqs=0;
 449     if(vf->info->opts) { // vf_vo get some special argument
 450       const m_struct_t* st = vf->info->opts;
 451       void* vf_priv = m_struct_alloc(st);
 452       int n;
 453       for(n = 0 ; args && args[2*n] ; n++)
 454         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 455       vf->priv = vf_priv;
 456       args = NULL;
 457     } else // Otherwise we should have the '_oldargs_'
 458       if(args && !strcmp(args[0],"_oldargs_"))
 459         args = (char**)args[1];
 460       else
 461         args = NULL;
 462     *retcode = vf->info->open(vf,(char*)args);
 463     if (*retcode > 0)
 464         return vf;
 465     free(vf);
 466     return NULL;
 467 }
 468
 469 struct vf_instance *vf_open_plugin(struct MPOpts *opts,
 470                                    const vf_info_t * const *filter_list,
 471                                    vf_instance_t *next, const char *name,
 472                                    char **args)
 473 {
 474     struct vf_instance *vf = vf_open_plugin_noerr(opts, filter_list, next,
 475                                                   name, args, &(int){0});
 476     if (!vf)
 477         mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Couldn't open video filter '%s'.\n",
 478                 name);
 479     return vf;
 480 }
 481
 482 vf_instance_t* vf_open_filter(struct MPOpts *opts, vf_instance_t* next, const char *name, char **args){
 483   if(args && strcmp(args[0],"_oldargs_")) {
 484     int i,l = 0;
 485     for(i = 0 ; args && args[2*i] ; i++)
 486       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 487     l += strlen(name);
 488     {
 489       char str[l+1];
 490       char* p = str;
 491       p += sprintf(str,"%s",name);
 492       for(i = 0 ; args && args[2*i] ; i++)
 493         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 494       mp_tmsg(MSGT_VFILTER,MSGL_INFO,"Opening video filter: " "[%s]\n",str);
 495     }
 496   } else if(strcmp(name,"vo")) {
 497     if(args && strcmp(args[0],"_oldargs_") == 0)
 498       mp_tmsg(MSGT_VFILTER,MSGL_INFO,"Opening video filter: "
 499              "[%s=%s]\n", name,args[1]);
 500     else
 501       mp_tmsg(MSGT_VFILTER,MSGL_INFO,"Opening video filter: "
 502              "[%s]\n", name);
 503   }
 504   return vf_open_plugin(opts, filter_list,next,name,args);
 505 }
 506
 507 /**
 508  * \brief adds a filter before the last one (which should be the vo filter).
 509  * \param vf start of the filter chain.
 510  * \param name name of the filter to add.
 511  * \param args argument list for the filter.
 512  * \return pointer to the filter instance that was created.
 513  */
 514 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 515   struct MPOpts *opts = (*vf)->opts;
 516   vf_instance_t *vo, *prev = NULL, *new;
 517   // Find the last filter (should be vf_vo)
 518   for (vo = *vf; vo->next; vo = vo->next)
 519     prev = vo;
 520   new = vf_open_filter(opts, vo, name, args);
 521   if (prev)
 522     prev->next = new;
 523   else
 524     *vf = new;
 525   return new;
 526 }
 527
 528 //============================================================================
 529
 530 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 531     vf_instance_t* vf=*vfp;
 532     struct MPOpts *opts = vf->opts;
 533     const unsigned int* p;
 534     unsigned int best=0;
 535     int ret;
 536     if((p=list)) while(*p){
 537         ret=vf->query_format(vf,*p);
 538         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 539         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 540         if(ret&1 && !best) best=*p; // best with conversion
 541         ++p;
 542     }
 543     if(best) return best; // bingo, they have common csp!
 544     // ok, then try with scale:
 545     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 546     vf=vf_open_filter(opts, vf,"scale",NULL);
 547     if(!vf) return 0; // failed to init "scale"
 548     // try the preferred csp first:
 549     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 550     // try the list again, now with "scaler" :
 551     if((p=list)) while(*p){
 552         ret=vf->query_format(vf,*p);
 553         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 554         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 555         if(ret&1 && !best) best=*p; // best with conversion
 556         ++p;
 557     }
 558     if(best) *vfp=vf; // else uninit vf  !FIXME!
 559     return best;
 560 }
 561
 562 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 563     dst->pict_type= src->pict_type;
 564     dst->fields = src->fields;
 565     dst->qscale_type= src->qscale_type;
 566     if(dst->width == src->width && dst->height == src->height){
 567         dst->qstride= src->qstride;
 568         dst->qscale= src->qscale;
 569     }
 570 }
 571
 572 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 573 {
 574     vf->continue_buffered_image = func;
 575 }
 576
 577 // Output the next buffered image (if any) from the filter chain.
 578 // The queue could be kept as a simple stack/list instead avoiding the
 579 // looping here, but there's currently no good context variable where
 580 // that could be stored so this was easier to implement.
 581
 582 int vf_output_queued_frame(vf_instance_t *vf)
 583 {
 584     while (1) {
 585         int ret;
 586         vf_instance_t *current;
 587         vf_instance_t *last=NULL;
 588         int (*tmp)(vf_instance_t *);
 589         for (current = vf; current; current = current->next)
 590             if (current->continue_buffered_image)
 591                 last = current;
 592         if (!last)
 593             return 0;
 594         tmp = last->continue_buffered_image;
 595         last->continue_buffered_image = NULL;
 596         ret = tmp(last);
 597         if (ret)
 598             return ret;
 599     }
 600 }
 601
 602
 603 /**
 604  * \brief Video config() function wrapper
 605  *
 606  * Blocks config() calls with different size or format for filters
 607  * with VFCAP_CONSTANT
 608  *
 609  * First call is redirected to vf->config.
 610  *
 611  * In following calls, it verifies that the configuration parameters
 612  * are unchanged, and returns either success or error.
 613  *
 614 */
 615 int vf_config_wrapper(struct vf_instance* vf,
 616                     int width, int height, int d_width, int d_height,
 617                     unsigned int flags, unsigned int outfmt)
 618 {
 619     int r;
 620     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 621         if ((vf->fmt.orig_width != width)
 622             || (vf->fmt.orig_height != height)
 623             || (vf->fmt.orig_fmt != outfmt)) {
 624             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"\nNew video file has different resolution or colorspace than the previous one.\n");
 625             return 0;
 626         }
 627         return 1;
 628     }
 629     vf->fmt.have_configured = 1;
 630     vf->fmt.orig_height = height;
 631     vf->fmt.orig_width = width;
 632     vf->fmt.orig_fmt = outfmt;
 633     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 634     if (!r) vf->fmt.have_configured = 0;
 635     return r;
 636 }
 637
 638 int vf_next_config(struct vf_instance* vf,
 639         int width, int height, int d_width, int d_height,
 640         unsigned int voflags, unsigned int outfmt){
 641     struct MPOpts *opts = vf->opts;
 642     int miss;
 643     int flags=vf->next->query_format(vf->next,outfmt);
 644     if(!flags){
 645         // hmm. colorspace mismatch!!!
 646         // let's insert the 'scale' filter, it does the job for us:
 647         vf_instance_t* vf2;
 648         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 649         vf2=vf_open_filter(opts, vf->next,"scale",NULL);
 650         if(!vf2) return 0; // shouldn't happen!
 651         vf->next=vf2;
 652         flags=vf->next->query_format(vf->next,outfmt);
 653         if(!flags){
 654             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Cannot find matching colorspace, even by inserting 'scale' :(\n");
 655             return 0; // FAIL
 656         }
 657     }
 658     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 659     miss=vf->default_reqs - (flags&vf->default_reqs);
 660     if(miss&VFCAP_ACCEPT_STRIDE){
 661         // vf requires stride support but vf->next doesn't support it!
 662         // let's insert the 'expand' filter, it does the job for us:
 663         vf_instance_t* vf2=vf_open_filter(opts, vf->next,"expand",NULL);
 664         if(!vf2) return 0; // shouldn't happen!
 665         vf->next=vf2;
 666     }
 667     vf->next->w = width; vf->next->h = height;
 668     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 669 }
 670
 671 int vf_next_control(struct vf_instance* vf, int request, void* data){
 672     return vf->next->control(vf->next,request,data);
 673 }
 674
 675 int vf_next_query_format(struct vf_instance* vf, unsigned int fmt){
 676     int flags=vf->next->query_format(vf->next,fmt);
 677     if(flags) flags|=vf->default_caps;
 678     return flags;
 679 }
 680
 681 int vf_next_put_image(struct vf_instance* vf,mp_image_t *mpi, double pts){
 682     return vf->next->put_image(vf->next,mpi, pts);
 683 }
 684
 685 void vf_next_draw_slice(struct vf_instance* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 686     if (vf->next->draw_slice) {
 687         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 688         return;
 689     }
 690     if (!vf->dmpi) {
 691         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 692         return;
 693     }
 694     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 695         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 696             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 697         return;
 698     }
 699     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 700         w, h, vf->dmpi->stride[0], stride[0]);
 701     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 702         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 703     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 704         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 705 }
 706
 707 //============================================================================
 708
 709 vf_instance_t *append_filters(vf_instance_t* last,
 710                               struct m_obj_settings *vf_settings)
 711 {
 712   struct MPOpts *opts = last->opts;
 713   vf_instance_t* vf;
 714   int i;
 715
 716   if(vf_settings) {
 717     // We want to add them in the 'right order'
 718     for(i = 0 ; vf_settings[i].name ; i++)
 719       /* NOP */;
 720     for(i-- ; i >= 0 ; i--) {
 721       //printf("Open filter %s\n",vf_settings[i].name);
 722       vf = vf_open_filter(opts, last,vf_settings[i].name,vf_settings[i].attribs);
 723       if(vf) last=vf;
 724     }
 725   }
 726   return last;
 727 }
 728
 729 //============================================================================
 730
 731 void vf_uninit_filter(vf_instance_t* vf){
 732     if(vf->uninit) vf->uninit(vf);
 733     free_mp_image(vf->imgctx.static_images[0]);
 734     free_mp_image(vf->imgctx.static_images[1]);
 735     free_mp_image(vf->imgctx.temp_images[0]);
 736     free_mp_image(vf->imgctx.export_images[0]);
 737     for (int i = 0; i < NUM_NUMBERED_MPI; i++)
 738         free_mp_image(vf->imgctx.numbered_images[i]);
 739     free(vf);
 740 }
 741
 742 void vf_uninit_filter_chain(vf_instance_t* vf){
 743     while(vf){
 744         vf_instance_t* next=vf->next;
 745         vf_uninit_filter(vf);
 746         vf=next;
 747     }
 748 }