libmpcodecs/vf.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "config.h"
   6 #ifdef 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_halfpack;
  52 extern const vf_info_t vf_info_dint;
  53 extern const vf_info_t vf_info_1bpp;
  54 extern const vf_info_t vf_info_2xsai;
  55 extern const vf_info_t vf_info_unsharp;
  56 extern const vf_info_t vf_info_swapuv;
  57 extern const vf_info_t vf_info_il;
  58 extern const vf_info_t vf_info_fil;
  59 extern const vf_info_t vf_info_boxblur;
  60 extern const vf_info_t vf_info_sab;
  61 extern const vf_info_t vf_info_smartblur;
  62 extern const vf_info_t vf_info_perspective;
  63 extern const vf_info_t vf_info_down3dright;
  64 extern const vf_info_t vf_info_field;
  65 extern const vf_info_t vf_info_denoise3d;
  66 extern const vf_info_t vf_info_hqdn3d;
  67 extern const vf_info_t vf_info_detc;
  68 extern const vf_info_t vf_info_telecine;
  69 extern const vf_info_t vf_info_tinterlace;
  70 extern const vf_info_t vf_info_tfields;
  71 extern const vf_info_t vf_info_ivtc;
  72 extern const vf_info_t vf_info_ilpack;
  73 extern const vf_info_t vf_info_dsize;
  74 extern const vf_info_t vf_info_decimate;
  75 extern const vf_info_t vf_info_softpulldown;
  76 extern const vf_info_t vf_info_pullup;
  77 extern const vf_info_t vf_info_filmdint;
  78 extern const vf_info_t vf_info_framestep;
  79 extern const vf_info_t vf_info_tile;
  80 extern const vf_info_t vf_info_delogo;
  81 extern const vf_info_t vf_info_remove_logo;
  82 extern const vf_info_t vf_info_hue;
  83 extern const vf_info_t vf_info_spp;
  84 extern const vf_info_t vf_info_uspp;
  85 extern const vf_info_t vf_info_fspp;
  86 extern const vf_info_t vf_info_pp7;
  87 extern const vf_info_t vf_info_yuvcsp;
  88 extern const vf_info_t vf_info_kerndeint;
  89 extern const vf_info_t vf_info_rgbtest;
  90 extern const vf_info_t vf_info_qp;
  91 extern const vf_info_t vf_info_phase;
  92 extern const vf_info_t vf_info_divtc;
  93 extern const vf_info_t vf_info_harddup;
  94 extern const vf_info_t vf_info_softskip;
  95 extern const vf_info_t vf_info_screenshot;
  96 extern const vf_info_t vf_info_ass;
  97 extern const vf_info_t vf_info_mcdeint;
  98 extern const vf_info_t vf_info_yadif;
  99 extern const vf_info_t vf_info_blackframe;
 100 extern const vf_info_t vf_info_geq;
 101 extern const vf_info_t vf_info_ow;
 102
 103 // list of available filters:
 104 static const vf_info_t* const filter_list[]={
 105     &vf_info_rectangle,
 106 #ifdef HAVE_POSIX_SELECT
 107     &vf_info_bmovl,
 108 #endif
 109     &vf_info_crop,
 110     &vf_info_expand,
 111 #ifdef USE_LIBPOSTPROC
 112     &vf_info_pp,
 113 #endif
 114     &vf_info_scale,
 115 //    &vf_info_osd,
 116     &vf_info_vo,
 117     &vf_info_format,
 118     &vf_info_noformat,
 119     &vf_info_yuy2,
 120     &vf_info_flip,
 121     &vf_info_rgb2bgr,
 122     &vf_info_rotate,
 123     &vf_info_mirror,
 124     &vf_info_palette,
 125 #ifdef USE_LIBAVCODEC
 126     &vf_info_lavc,
 127     &vf_info_lavcdeint,
 128     &vf_info_pp7,
 129 #endif
 130 #ifdef HAVE_ZR
 131     &vf_info_zrmjpeg,
 132 #endif
 133     &vf_info_dvbscale,
 134     &vf_info_cropdetect,
 135     &vf_info_test,
 136     &vf_info_noise,
 137     &vf_info_yvu9,
 138     &vf_info_eq,
 139     &vf_info_eq2,
 140     &vf_info_halfpack,
 141     &vf_info_dint,
 142     &vf_info_1bpp,
 143     &vf_info_2xsai,
 144     &vf_info_unsharp,
 145     &vf_info_swapuv,
 146     &vf_info_il,
 147     &vf_info_fil,
 148     &vf_info_boxblur,
 149     &vf_info_sab,
 150     &vf_info_smartblur,
 151     &vf_info_perspective,
 152     &vf_info_down3dright,
 153     &vf_info_field,
 154     &vf_info_denoise3d,
 155     &vf_info_hqdn3d,
 156     &vf_info_detc,
 157     &vf_info_telecine,
 158     &vf_info_tinterlace,
 159     &vf_info_tfields,
 160     &vf_info_ivtc,
 161     &vf_info_ilpack,
 162     &vf_info_dsize,
 163     &vf_info_decimate,
 164     &vf_info_softpulldown,
 165     &vf_info_pullup,
 166     &vf_info_filmdint,
 167     &vf_info_framestep,
 168     &vf_info_tile,
 169     &vf_info_delogo,
 170     &vf_info_remove_logo,
 171     &vf_info_hue,
 172 #ifdef USE_LIBAVCODEC_A
 173     &vf_info_spp,
 174     &vf_info_uspp,
 175     &vf_info_fspp,
 176     &vf_info_qp,
 177     &vf_info_mcdeint,
 178     &vf_info_geq,
 179 #endif
 180     &vf_info_yuvcsp,
 181     &vf_info_kerndeint,
 182     &vf_info_rgbtest,
 183     &vf_info_phase,
 184     &vf_info_divtc,
 185     &vf_info_harddup,
 186     &vf_info_softskip,
 187     &vf_info_screenshot,
 188 #ifdef USE_ASS
 189     &vf_info_ass,
 190 #endif
 191     &vf_info_yadif,
 192     &vf_info_blackframe,
 193     &vf_info_ow,
 194     NULL
 195 };
 196
 197 // For the vf option
 198 m_obj_settings_t* vf_settings = NULL;
 199 const m_obj_list_t vf_obj_list = {
 200   (void**)filter_list,
 201   M_ST_OFF(vf_info_t,name),
 202   M_ST_OFF(vf_info_t,info),
 203   M_ST_OFF(vf_info_t,opts)
 204 };
 205
 206 //============================================================================
 207 // mpi stuff:
 208
 209 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 210     int y;
 211     if(mpi->flags&MP_IMGFLAG_PLANAR){
 212         y0&=~1;h+=h&1;
 213         if(x0==0 && w==mpi->width){
 214             // full width clear:
 215             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 216             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 217             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 218         } else
 219         for(y=y0;y<y0+h;y+=2){
 220             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 221             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 222             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 223             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 224         }
 225         return;
 226     }
 227     // packed:
 228     for(y=y0;y<y0+h;y++){
 229         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 230         if(mpi->flags&MP_IMGFLAG_YUV){
 231             unsigned int* p=(unsigned int*) dst;
 232             int size=(mpi->bpp>>3)*w/4;
 233             int i;
 234 #ifdef WORDS_BIGENDIAN
 235 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 236 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 237 #else
 238 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 239 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 240 #endif
 241             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 242                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 243                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 244             } else {
 245                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 246                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 247             }
 248         } else
 249             memset(dst,0,(mpi->bpp>>3)*w);
 250     }
 251 }
 252
 253 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 254   mp_image_t* mpi=NULL;
 255   int w2;
 256
 257 #ifdef MP_DEBUG
 258   assert(w == -1 || w >= vf->w);
 259   assert(h == -1 || h >= vf->h);
 260   assert(vf->w > 0);
 261   assert(vf->h > 0);
 262 #endif
 263
 264 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 265
 266   if (w == -1) w = vf->w;
 267   if (h == -1) h = vf->h;
 268
 269   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 270
 271   if(vf->put_image==vf_next_put_image){
 272       // passthru mode, if the filter uses the fallback/default put_image() code
 273       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 274   }
 275
 276   // Note: we should call libvo first to check if it supports direct rendering
 277   // and if not, then fallback to software buffers:
 278   switch(mp_imgtype){
 279   case MP_IMGTYPE_EXPORT:
 280     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 281     mpi=vf->imgctx.export_images[0];
 282     break;
 283   case MP_IMGTYPE_STATIC:
 284     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 285     mpi=vf->imgctx.static_images[0];
 286     break;
 287   case MP_IMGTYPE_TEMP:
 288     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 289     mpi=vf->imgctx.temp_images[0];
 290     break;
 291   case MP_IMGTYPE_IPB:
 292     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 293       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 294       mpi=vf->imgctx.temp_images[0];
 295       break;
 296     }
 297   case MP_IMGTYPE_IP:
 298     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 299     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 300     vf->imgctx.static_idx^=1;
 301     break;
 302   }
 303   if(mpi){
 304     mpi->type=mp_imgtype;
 305     mpi->w=vf->w; mpi->h=vf->h;
 306     // keep buffer allocation status & color flags only:
 307 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 308     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 309     // accept restrictions & draw_slice flags only:
 310     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK);
 311     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 312     if(mpi->width!=w2 || mpi->height!=h){
 313 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 314         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 315             if(mpi->width<w2 || mpi->height<h){
 316                 // need to re-allocate buffer memory:
 317                 free(mpi->planes[0]);
 318                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 319                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 320             }
 321 //      } else {
 322         } {
 323             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 324             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 325         }
 326     }
 327     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 328     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 329
 330         // check libvo first!
 331         if(vf->get_image) vf->get_image(vf,mpi);
 332
 333         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 334           // non-direct and not yet allocated image. allocate it!
 335
 336           // check if codec prefer aligned stride:
 337           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 338               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 339                          mpi->flags&MP_IMGFLAG_YUV) ?
 340                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 341               w2=((w+align)&(~align));
 342               if(mpi->width!=w2){
 343                   // we have to change width... check if we CAN co it:
 344                   int flags=vf->query_format(vf,outfmt); // should not fail
 345                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 346 //                printf("query -> 0x%X    \n",flags);
 347                   if(flags&VFCAP_ACCEPT_STRIDE){
 348                       mpi->width=w2;
 349                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 350                   }
 351               }
 352           }
 353
 354           // IF09 - allocate space for 4. plane delta info - unused
 355           if (mpi->imgfmt == IMGFMT_IF09)
 356           {
 357              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8+
 358                                         mpi->chroma_width*mpi->chroma_height);
 359              /* export delta table */
 360              mpi->planes[3]=mpi->planes[0]+(mpi->width*mpi->height)+2*(mpi->chroma_width*mpi->chroma_height);
 361           }
 362           else
 363              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8);
 364           if(mpi->flags&MP_IMGFLAG_PLANAR){
 365               // YV12/I420/YVU9/IF09. feel free to add other planar formats here...
 366               //if(!mpi->stride[0])
 367               mpi->stride[0]=mpi->width;
 368               //if(!mpi->stride[1])
 369               if(mpi->num_planes > 2){
 370               mpi->stride[1]=mpi->stride[2]=mpi->chroma_width;
 371               if(mpi->flags&MP_IMGFLAG_SWAPPED){
 372                   // I420/IYUV  (Y,U,V)
 373                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 374                   mpi->planes[2]=mpi->planes[1]+mpi->chroma_width*mpi->chroma_height;
 375               } else {
 376                   // YV12,YVU9,IF09  (Y,V,U)
 377                   mpi->planes[2]=mpi->planes[0]+mpi->width*mpi->height;
 378                   mpi->planes[1]=mpi->planes[2]+mpi->chroma_width*mpi->chroma_height;
 379               }
 380               } else {
 381                   // NV12/NV21
 382                   mpi->stride[1]=mpi->chroma_width;
 383                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 384               }
 385           } else {
 386               //if(!mpi->stride[0])
 387               mpi->stride[0]=mpi->width*mpi->bpp/8;
 388           }
 389 //        printf("clearing img!\n");
 390           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 391           mpi->flags|=MP_IMGFLAG_ALLOCATED;
 392         }
 393     }
 394     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 395         if(vf->start_slice) vf->start_slice(vf,mpi);
 396     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 397             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 398                   vf->info->name,
 399                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 400                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 401                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 402                   mpi->width,mpi->height,mpi->bpp,
 403                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 404                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 405                   mpi->bpp*mpi->width*mpi->height/8);
 406             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",
 407                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 408                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 409                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 410             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 411     }
 412
 413   mpi->qscale = NULL;
 414   }
 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_s* vf, unsigned int fmt){
 425   if(fmt == IMGFMT_MPEGPES) return 0;
 426   return vf_next_query_format(vf,fmt);
 427 }
 428
 429 vf_instance_t* vf_open_plugin(const vf_info_t* const* filter_list, vf_instance_t* next, const char *name, char **args){
 430     vf_instance_t* vf;
 431     int i;
 432     for(i=0;;i++){
 433         if(!filter_list[i]){
 434             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotFindVideoFilter,name);
 435             return NULL; // no such filter!
 436         }
 437         if(!strcmp(filter_list[i]->name,name)) break;
 438     }
 439     vf=malloc(sizeof(vf_instance_t));
 440     memset(vf,0,sizeof(vf_instance_t));
 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     if(vf->info->open(vf,(char*)args)>0) return vf; // Success!
 463     free(vf);
 464     mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotOpenVideoFilter,name);
 465     return NULL;
 466 }
 467
 468 vf_instance_t* vf_open_filter(vf_instance_t* next, const char *name, char **args){
 469   if(args && strcmp(args[0],"_oldargs_")) {
 470     int i,l = 0;
 471     for(i = 0 ; args && args[2*i] ; i++)
 472       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 473     l += strlen(name);
 474     {
 475       char str[l+1];
 476       char* p = str;
 477       p += sprintf(str,"%s",name);
 478       for(i = 0 ; args && args[2*i] ; i++)
 479         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 480       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter "[%s]\n",str);
 481     }
 482   } else if(strcmp(name,"vo")) {
 483     if(args && strcmp(args[0],"_oldargs_") == 0)
 484       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 485              "[%s=%s]\n", name,args[1]);
 486     else
 487       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 488              "[%s]\n", name);
 489   }
 490   return vf_open_plugin(filter_list,next,name,args);
 491 }
 492
 493 /**
 494  * \brief adds a filter before the last one (which should be the vo filter).
 495  * \param vf start of the filter chain.
 496  * \param name name of the filter to add.
 497  * \param args argument list for the filter.
 498  * \return pointer to the filter instance that was created.
 499  */
 500 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 501   vf_instance_t *vo, *prev = NULL, *new;
 502   // Find the last filter (should be vf_vo)
 503   for (vo = *vf; vo->next; vo = vo->next)
 504     prev = vo;
 505   new = vf_open_filter(vo, name, args);
 506   if (prev)
 507     prev->next = new;
 508   else
 509     *vf = new;
 510   return new;
 511 }
 512
 513 //============================================================================
 514
 515 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 516     vf_instance_t* vf=*vfp;
 517     const unsigned int* p;
 518     unsigned int best=0;
 519     int ret;
 520     if((p=list)) while(*p){
 521         ret=vf->query_format(vf,*p);
 522         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 523         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 524         if(ret&1 && !best) best=*p; // best with conversion
 525         ++p;
 526     }
 527     if(best) return best; // bingo, they have common csp!
 528     // ok, then try with scale:
 529     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 530     vf=vf_open_filter(vf,"scale",NULL);
 531     if(!vf) return 0; // failed to init "scale"
 532     // try the preferred csp first:
 533     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 534     // try the list again, now with "scaler" :
 535     if((p=list)) while(*p){
 536         ret=vf->query_format(vf,*p);
 537         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 538         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 539         if(ret&1 && !best) best=*p; // best with conversion
 540         ++p;
 541     }
 542     if(best) *vfp=vf; // else uninit vf  !FIXME!
 543     return best;
 544 }
 545
 546 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 547     dst->pict_type= src->pict_type;
 548     dst->fields = src->fields;
 549     dst->qscale_type= src->qscale_type;
 550     if(dst->width == src->width && dst->height == src->height){
 551         dst->qstride= src->qstride;
 552         dst->qscale= src->qscale;
 553     }
 554 }
 555
 556 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 557 {
 558     vf->continue_buffered_image = func;
 559 }
 560
 561 // Output the next buffered image (if any) from the filter chain.
 562 // The queue could be kept as a simple stack/list instead avoiding the
 563 // looping here, but there's currently no good context variable where
 564 // that could be stored so this was easier to implement.
 565
 566 int vf_output_queued_frame(vf_instance_t *vf)
 567 {
 568     while (1) {
 569         int ret;
 570         vf_instance_t *current;
 571         vf_instance_t *last=NULL;
 572         int (*tmp)(vf_instance_t *);
 573         for (current = vf; current; current = current->next)
 574             if (current->continue_buffered_image)
 575                 last = current;
 576         if (!last)
 577             return 0;
 578         tmp = last->continue_buffered_image;
 579         last->continue_buffered_image = NULL;
 580         ret = tmp(last);
 581         if (ret)
 582             return ret;
 583     }
 584 }
 585
 586
 587 /**
 588  * \brief Video config() function wrapper
 589  *
 590  * Blocks config() calls with different size or format for filters
 591  * with VFCAP_CONSTANT
 592  *
 593  * First call is redirected to vf->config.
 594  *
 595  * In following calls, it verifies that the configuration parameters
 596  * are unchanged, and returns either success or error.
 597  *
 598 */
 599 int vf_config_wrapper(struct vf_instance_s* vf,
 600                     int width, int height, int d_width, int d_height,
 601                     unsigned int flags, unsigned int outfmt)
 602 {
 603     int r;
 604     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 605         if ((vf->fmt.orig_width != width)
 606             || (vf->fmt.orig_height != height)
 607             || (vf->fmt.orig_fmt != outfmt)) {
 608             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_ResolutionDoesntMatch);
 609             return 0;
 610         }
 611         return 1;
 612     }
 613     vf->fmt.have_configured = 1;
 614     vf->fmt.orig_height = height;
 615     vf->fmt.orig_width = width;
 616     vf->fmt.orig_fmt = outfmt;
 617     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 618     if (!r) vf->fmt.have_configured = 0;
 619     return r;
 620 }
 621
 622 int vf_next_config(struct vf_instance_s* vf,
 623         int width, int height, int d_width, int d_height,
 624         unsigned int voflags, unsigned int outfmt){
 625     int miss;
 626     int flags=vf->next->query_format(vf->next,outfmt);
 627     if(!flags){
 628         // hmm. colorspace mismatch!!!
 629         // let's insert the 'scale' filter, it does the job for us:
 630         vf_instance_t* vf2;
 631         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 632         vf2=vf_open_filter(vf->next,"scale",NULL);
 633         if(!vf2) return 0; // shouldn't happen!
 634         vf->next=vf2;
 635         flags=vf->next->query_format(vf->next,outfmt);
 636         if(!flags){
 637             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CannotFindColorspace);
 638             return 0; // FAIL
 639         }
 640     }
 641     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 642     miss=vf->default_reqs - (flags&vf->default_reqs);
 643     if(miss&VFCAP_ACCEPT_STRIDE){
 644         // vf requires stride support but vf->next doesn't support it!
 645         // let's insert the 'expand' filter, it does the job for us:
 646         vf_instance_t* vf2=vf_open_filter(vf->next,"expand",NULL);
 647         if(!vf2) return 0; // shouldn't happen!
 648         vf->next=vf2;
 649     }
 650     vf->next->w = width; vf->next->h = height;
 651     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 652 }
 653
 654 int vf_next_control(struct vf_instance_s* vf, int request, void* data){
 655     return vf->next->control(vf->next,request,data);
 656 }
 657
 658 int vf_next_query_format(struct vf_instance_s* vf, unsigned int fmt){
 659     int flags=vf->next->query_format(vf->next,fmt);
 660     if(flags) flags|=vf->default_caps;
 661     return flags;
 662 }
 663
 664 int vf_next_put_image(struct vf_instance_s* vf,mp_image_t *mpi, double pts){
 665     return vf->next->put_image(vf->next,mpi, pts);
 666 }
 667
 668 void vf_next_draw_slice(struct vf_instance_s* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 669     if (vf->next->draw_slice) {
 670         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 671         return;
 672     }
 673     if (!vf->dmpi) {
 674         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 675         return;
 676     }
 677     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 678         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 679             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 680         return;
 681     }
 682     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 683         w, h, vf->dmpi->stride[0], stride[0]);
 684     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 685         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 686     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 687         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 688 }
 689
 690 //============================================================================
 691
 692 vf_instance_t* append_filters(vf_instance_t* last){
 693   vf_instance_t* vf;
 694   int i;
 695
 696   if(vf_settings) {
 697     // We want to add them in the 'right order'
 698     for(i = 0 ; vf_settings[i].name ; i++)
 699       /* NOP */;
 700     for(i-- ; i >= 0 ; i--) {
 701       //printf("Open filter %s\n",vf_settings[i].name);
 702       vf = vf_open_filter(last,vf_settings[i].name,vf_settings[i].attribs);
 703       if(vf) last=vf;
 704     }
 705   }
 706   return last;
 707 }
 708
 709 //============================================================================
 710
 711 void vf_uninit_filter(vf_instance_t* vf){
 712     if(vf->uninit) vf->uninit(vf);
 713     free_mp_image(vf->imgctx.static_images[0]);
 714     free_mp_image(vf->imgctx.static_images[1]);
 715     free_mp_image(vf->imgctx.temp_images[0]);
 716     free_mp_image(vf->imgctx.export_images[0]);
 717     free(vf);
 718 }
 719
 720 void vf_uninit_filter_chain(vf_instance_t* vf){
 721     while(vf){
 722         vf_instance_t* next=vf->next;
 723         vf_uninit_filter(vf);
 724         vf=next;
 725     }
 726 }