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
 104 // list of available filters:
 105 static const vf_info_t* const filter_list[]={
 106     &vf_info_rectangle,
 107 #ifdef HAVE_POSIX_SELECT
 108     &vf_info_bmovl,
 109 #endif
 110     &vf_info_crop,
 111     &vf_info_expand,
 112 #ifdef CONFIG_LIBPOSTPROC
 113     &vf_info_pp,
 114 #endif
 115     &vf_info_scale,
 116 //    &vf_info_osd,
 117     &vf_info_vo,
 118     &vf_info_format,
 119     &vf_info_noformat,
 120     &vf_info_yuy2,
 121     &vf_info_flip,
 122     &vf_info_rgb2bgr,
 123     &vf_info_rotate,
 124     &vf_info_mirror,
 125     &vf_info_palette,
 126     &vf_info_pp7,
 127 #ifdef CONFIG_LIBAVCODEC
 128     &vf_info_lavc,
 129     &vf_info_lavcdeint,
 130     &vf_info_screenshot,
 131 #endif
 132 #ifdef CONFIG_ZR
 133     &vf_info_zrmjpeg,
 134 #endif
 135     &vf_info_dvbscale,
 136     &vf_info_cropdetect,
 137     &vf_info_test,
 138     &vf_info_noise,
 139     &vf_info_yvu9,
 140     &vf_info_eq,
 141     &vf_info_eq2,
 142     &vf_info_gradfun,
 143     &vf_info_halfpack,
 144     &vf_info_dint,
 145     &vf_info_1bpp,
 146     &vf_info_2xsai,
 147     &vf_info_unsharp,
 148     &vf_info_swapuv,
 149     &vf_info_il,
 150     &vf_info_fil,
 151     &vf_info_boxblur,
 152     &vf_info_sab,
 153     &vf_info_smartblur,
 154     &vf_info_perspective,
 155     &vf_info_down3dright,
 156     &vf_info_field,
 157     &vf_info_denoise3d,
 158     &vf_info_hqdn3d,
 159     &vf_info_detc,
 160     &vf_info_telecine,
 161     &vf_info_tinterlace,
 162     &vf_info_tfields,
 163     &vf_info_ivtc,
 164     &vf_info_ilpack,
 165     &vf_info_dsize,
 166     &vf_info_decimate,
 167     &vf_info_softpulldown,
 168     &vf_info_pullup,
 169     &vf_info_filmdint,
 170     &vf_info_framestep,
 171     &vf_info_tile,
 172     &vf_info_delogo,
 173     &vf_info_remove_logo,
 174     &vf_info_hue,
 175 #ifdef CONFIG_LIBAVCODEC_A
 176     &vf_info_spp,
 177     &vf_info_uspp,
 178     &vf_info_fspp,
 179     &vf_info_qp,
 180     &vf_info_mcdeint,
 181     &vf_info_geq,
 182 #endif
 183     &vf_info_yuvcsp,
 184     &vf_info_kerndeint,
 185     &vf_info_rgbtest,
 186     &vf_info_phase,
 187     &vf_info_divtc,
 188     &vf_info_harddup,
 189     &vf_info_softskip,
 190 #ifdef CONFIG_ASS
 191     &vf_info_ass,
 192 #endif
 193     &vf_info_yadif,
 194     &vf_info_blackframe,
 195     &vf_info_ow,
 196     NULL
 197 };
 198
 199 // For the vf option
 200 m_obj_settings_t* vf_settings = NULL;
 201 const m_obj_list_t vf_obj_list = {
 202   (void**)filter_list,
 203   M_ST_OFF(vf_info_t,name),
 204   M_ST_OFF(vf_info_t,info),
 205   M_ST_OFF(vf_info_t,opts)
 206 };
 207
 208 //============================================================================
 209 // mpi stuff:
 210
 211 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 212     int y;
 213     if(mpi->flags&MP_IMGFLAG_PLANAR){
 214         y0&=~1;h+=h&1;
 215         if(x0==0 && w==mpi->width){
 216             // full width clear:
 217             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 218             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 219             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 220         } else
 221         for(y=y0;y<y0+h;y+=2){
 222             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 223             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 224             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 225             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 226         }
 227         return;
 228     }
 229     // packed:
 230     for(y=y0;y<y0+h;y++){
 231         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 232         if(mpi->flags&MP_IMGFLAG_YUV){
 233             unsigned int* p=(unsigned int*) dst;
 234             int size=(mpi->bpp>>3)*w/4;
 235             int i;
 236 #ifdef WORDS_BIGENDIAN
 237 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 238 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 239 #else
 240 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 241 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 242 #endif
 243             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 244                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 245                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 246             } else {
 247                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 248                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 249             }
 250         } else
 251             memset(dst,0,(mpi->bpp>>3)*w);
 252     }
 253 }
 254
 255 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 256   mp_image_t* mpi=NULL;
 257   int w2;
 258   int number = mp_imgtype >> 16;
 259
 260 #ifdef MP_DEBUG
 261   assert(w == -1 || w >= vf->w);
 262   assert(h == -1 || h >= vf->h);
 263   assert(vf->w > 0);
 264   assert(vf->h > 0);
 265 #endif
 266
 267 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 268
 269   if (w == -1) w = vf->w;
 270   if (h == -1) h = vf->h;
 271
 272   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 273
 274   if(vf->put_image==vf_next_put_image){
 275       // passthru mode, if the filter uses the fallback/default put_image() code
 276       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 277   }
 278
 279   // Note: we should call libvo first to check if it supports direct rendering
 280   // and if not, then fallback to software buffers:
 281   switch(mp_imgtype & 0xff){
 282   case MP_IMGTYPE_EXPORT:
 283     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 284     mpi=vf->imgctx.export_images[0];
 285     break;
 286   case MP_IMGTYPE_STATIC:
 287     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 288     mpi=vf->imgctx.static_images[0];
 289     break;
 290   case MP_IMGTYPE_TEMP:
 291     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 292     mpi=vf->imgctx.temp_images[0];
 293     break;
 294   case MP_IMGTYPE_IPB:
 295     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 296       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 297       mpi=vf->imgctx.temp_images[0];
 298       break;
 299     }
 300   case MP_IMGTYPE_IP:
 301     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 302     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 303     vf->imgctx.static_idx^=1;
 304     break;
 305   case MP_IMGTYPE_NUMBERED:
 306     if (number == -1) {
 307       int i;
 308       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 309         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 310           break;
 311       number = i;
 312     }
 313     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 314     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 315     mpi = vf->imgctx.numbered_images[number];
 316     mpi->number = number;
 317     break;
 318   }
 319   if(mpi){
 320     mpi->type=mp_imgtype;
 321     mpi->w=vf->w; mpi->h=vf->h;
 322     // keep buffer allocation status & color flags only:
 323 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 324     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 325     // accept restrictions & draw_slice flags only:
 326     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK);
 327     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 328     if(mpi->width!=w2 || mpi->height!=h){
 329 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 330         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 331             if(mpi->width<w2 || mpi->height<h){
 332                 // need to re-allocate buffer memory:
 333                 free(mpi->planes[0]);
 334                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 335                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 336             }
 337 //      } else {
 338         } {
 339             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 340             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 341         }
 342     }
 343     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 344     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 345
 346         // check libvo first!
 347         if(vf->get_image) vf->get_image(vf,mpi);
 348
 349         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 350           // non-direct and not yet allocated image. allocate it!
 351           if (!mpi->bpp) { // no way we can allocate this
 352               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 353                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 354               return NULL;
 355           }
 356
 357           // check if codec prefer aligned stride:
 358           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 359               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 360                          mpi->flags&MP_IMGFLAG_YUV) ?
 361                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 362               w2=((w+align)&(~align));
 363               if(mpi->width!=w2){
 364                   // we have to change width... check if we CAN co it:
 365                   int flags=vf->query_format(vf,outfmt); // should not fail
 366                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 367 //                printf("query -> 0x%X    \n",flags);
 368                   if(flags&VFCAP_ACCEPT_STRIDE){
 369                       mpi->width=w2;
 370                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 371                   }
 372               }
 373           }
 374
 375           // IF09 - allocate space for 4. plane delta info - unused
 376           if (mpi->imgfmt == IMGFMT_IF09)
 377           {
 378              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8+
 379                                         mpi->chroma_width*mpi->chroma_height);
 380              /* export delta table */
 381              mpi->planes[3]=mpi->planes[0]+(mpi->width*mpi->height)+2*(mpi->chroma_width*mpi->chroma_height);
 382           }
 383           else
 384              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8);
 385           if(mpi->flags&MP_IMGFLAG_PLANAR){
 386               // YV12/I420/YVU9/IF09. feel free to add other planar formats here...
 387               //if(!mpi->stride[0])
 388               mpi->stride[0]=mpi->width;
 389               //if(!mpi->stride[1])
 390               if(mpi->num_planes > 2){
 391               mpi->stride[1]=mpi->stride[2]=mpi->chroma_width;
 392               if(mpi->flags&MP_IMGFLAG_SWAPPED){
 393                   // I420/IYUV  (Y,U,V)
 394                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 395                   mpi->planes[2]=mpi->planes[1]+mpi->chroma_width*mpi->chroma_height;
 396               } else {
 397                   // YV12,YVU9,IF09  (Y,V,U)
 398                   mpi->planes[2]=mpi->planes[0]+mpi->width*mpi->height;
 399                   mpi->planes[1]=mpi->planes[2]+mpi->chroma_width*mpi->chroma_height;
 400               }
 401               } else {
 402                   // NV12/NV21
 403                   mpi->stride[1]=mpi->chroma_width;
 404                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 405               }
 406           } else {
 407               //if(!mpi->stride[0])
 408               mpi->stride[0]=mpi->width*mpi->bpp/8;
 409           }
 410 //        printf("clearing img!\n");
 411           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 412           mpi->flags|=MP_IMGFLAG_ALLOCATED;
 413         }
 414     }
 415     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 416         if(vf->start_slice) vf->start_slice(vf,mpi);
 417     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 418             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 419                   vf->info->name,
 420                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 421                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 422                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 423                   mpi->width,mpi->height,mpi->bpp,
 424                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 425                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 426                   mpi->bpp*mpi->width*mpi->height/8);
 427             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",
 428                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 429                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 430                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 431             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 432     }
 433
 434   mpi->qscale = NULL;
 435   }
 436   mpi->usage_count++;
 437 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 438 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 439 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 440   return mpi;
 441 }
 442
 443 //============================================================================
 444
 445 // By default vf doesn't accept MPEGPES
 446 static int vf_default_query_format(struct vf_instance_s* vf, unsigned int fmt){
 447   if(fmt == IMGFMT_MPEGPES) return 0;
 448   return vf_next_query_format(vf,fmt);
 449 }
 450
 451 vf_instance_t* vf_open_plugin(const vf_info_t* const* filter_list, vf_instance_t* next, const char *name, char **args){
 452     vf_instance_t* vf;
 453     int i;
 454     for(i=0;;i++){
 455         if(!filter_list[i]){
 456             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotFindVideoFilter,name);
 457             return NULL; // no such filter!
 458         }
 459         if(!strcmp(filter_list[i]->name,name)) break;
 460     }
 461     vf=malloc(sizeof(vf_instance_t));
 462     memset(vf,0,sizeof(vf_instance_t));
 463     vf->info=filter_list[i];
 464     vf->next=next;
 465     vf->config=vf_next_config;
 466     vf->control=vf_next_control;
 467     vf->query_format=vf_default_query_format;
 468     vf->put_image=vf_next_put_image;
 469     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 470     vf->default_reqs=0;
 471     if(vf->info->opts) { // vf_vo get some special argument
 472       const m_struct_t* st = vf->info->opts;
 473       void* vf_priv = m_struct_alloc(st);
 474       int n;
 475       for(n = 0 ; args && args[2*n] ; n++)
 476         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 477       vf->priv = vf_priv;
 478       args = NULL;
 479     } else // Otherwise we should have the '_oldargs_'
 480       if(args && !strcmp(args[0],"_oldargs_"))
 481         args = (char**)args[1];
 482       else
 483         args = NULL;
 484     if(vf->info->open(vf,(char*)args)>0) return vf; // Success!
 485     free(vf);
 486     mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotOpenVideoFilter,name);
 487     return NULL;
 488 }
 489
 490 vf_instance_t* vf_open_filter(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,MSGTR_OpeningVideoFilter "[%s]\n",str);
 503     }
 504   } else if(strcmp(name,"vo")) {
 505     if(args && strcmp(args[0],"_oldargs_") == 0)
 506       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 507              "[%s=%s]\n", name,args[1]);
 508     else
 509       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 510              "[%s]\n", name);
 511   }
 512   return vf_open_plugin(filter_list,next,name,args);
 513 }
 514
 515 /**
 516  * \brief adds a filter before the last one (which should be the vo filter).
 517  * \param vf start of the filter chain.
 518  * \param name name of the filter to add.
 519  * \param args argument list for the filter.
 520  * \return pointer to the filter instance that was created.
 521  */
 522 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 523   vf_instance_t *vo, *prev = NULL, *new;
 524   // Find the last filter (should be vf_vo)
 525   for (vo = *vf; vo->next; vo = vo->next)
 526     prev = vo;
 527   new = vf_open_filter(vo, name, args);
 528   if (prev)
 529     prev->next = new;
 530   else
 531     *vf = new;
 532   return new;
 533 }
 534
 535 //============================================================================
 536
 537 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 538     vf_instance_t* vf=*vfp;
 539     const unsigned int* p;
 540     unsigned int best=0;
 541     int ret;
 542     if((p=list)) while(*p){
 543         ret=vf->query_format(vf,*p);
 544         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 545         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 546         if(ret&1 && !best) best=*p; // best with conversion
 547         ++p;
 548     }
 549     if(best) return best; // bingo, they have common csp!
 550     // ok, then try with scale:
 551     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 552     vf=vf_open_filter(vf,"scale",NULL);
 553     if(!vf) return 0; // failed to init "scale"
 554     // try the preferred csp first:
 555     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 556     // try the list again, now with "scaler" :
 557     if((p=list)) while(*p){
 558         ret=vf->query_format(vf,*p);
 559         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 560         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 561         if(ret&1 && !best) best=*p; // best with conversion
 562         ++p;
 563     }
 564     if(best) *vfp=vf; // else uninit vf  !FIXME!
 565     return best;
 566 }
 567
 568 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 569     dst->pict_type= src->pict_type;
 570     dst->fields = src->fields;
 571     dst->qscale_type= src->qscale_type;
 572     if(dst->width == src->width && dst->height == src->height){
 573         dst->qstride= src->qstride;
 574         dst->qscale= src->qscale;
 575     }
 576 }
 577
 578 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 579 {
 580     vf->continue_buffered_image = func;
 581 }
 582
 583 // Output the next buffered image (if any) from the filter chain.
 584 // The queue could be kept as a simple stack/list instead avoiding the
 585 // looping here, but there's currently no good context variable where
 586 // that could be stored so this was easier to implement.
 587
 588 int vf_output_queued_frame(vf_instance_t *vf)
 589 {
 590     while (1) {
 591         int ret;
 592         vf_instance_t *current;
 593         vf_instance_t *last=NULL;
 594         int (*tmp)(vf_instance_t *);
 595         for (current = vf; current; current = current->next)
 596             if (current->continue_buffered_image)
 597                 last = current;
 598         if (!last)
 599             return 0;
 600         tmp = last->continue_buffered_image;
 601         last->continue_buffered_image = NULL;
 602         ret = tmp(last);
 603         if (ret > 0) {
 604             vf->control(vf, VFCTRL_DRAW_OSD, NULL);
 605 #ifdef CONFIG_ASS
 606             vf->control(vf, VFCTRL_DRAW_EOSD, NULL);
 607 #endif
 608         }
 609         if (ret)
 610             return ret;
 611     }
 612 }
 613
 614
 615 /**
 616  * \brief Video config() function wrapper
 617  *
 618  * Blocks config() calls with different size or format for filters
 619  * with VFCAP_CONSTANT
 620  *
 621  * First call is redirected to vf->config.
 622  *
 623  * In following calls, it verifies that the configuration parameters
 624  * are unchanged, and returns either success or error.
 625  *
 626 */
 627 int vf_config_wrapper(struct vf_instance_s* vf,
 628                     int width, int height, int d_width, int d_height,
 629                     unsigned int flags, unsigned int outfmt)
 630 {
 631     int r;
 632     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 633         if ((vf->fmt.orig_width != width)
 634             || (vf->fmt.orig_height != height)
 635             || (vf->fmt.orig_fmt != outfmt)) {
 636             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_ResolutionDoesntMatch);
 637             return 0;
 638         }
 639         return 1;
 640     }
 641     vf->fmt.have_configured = 1;
 642     vf->fmt.orig_height = height;
 643     vf->fmt.orig_width = width;
 644     vf->fmt.orig_fmt = outfmt;
 645     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 646     if (!r) vf->fmt.have_configured = 0;
 647     return r;
 648 }
 649
 650 int vf_next_config(struct vf_instance_s* vf,
 651         int width, int height, int d_width, int d_height,
 652         unsigned int voflags, unsigned int outfmt){
 653     int miss;
 654     int flags=vf->next->query_format(vf->next,outfmt);
 655     if(!flags){
 656         // hmm. colorspace mismatch!!!
 657         // let's insert the 'scale' filter, it does the job for us:
 658         vf_instance_t* vf2;
 659         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 660         vf2=vf_open_filter(vf->next,"scale",NULL);
 661         if(!vf2) return 0; // shouldn't happen!
 662         vf->next=vf2;
 663         flags=vf->next->query_format(vf->next,outfmt);
 664         if(!flags){
 665             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CannotFindColorspace);
 666             return 0; // FAIL
 667         }
 668     }
 669     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 670     miss=vf->default_reqs - (flags&vf->default_reqs);
 671     if(miss&VFCAP_ACCEPT_STRIDE){
 672         // vf requires stride support but vf->next doesn't support it!
 673         // let's insert the 'expand' filter, it does the job for us:
 674         vf_instance_t* vf2=vf_open_filter(vf->next,"expand",NULL);
 675         if(!vf2) return 0; // shouldn't happen!
 676         vf->next=vf2;
 677     }
 678     vf->next->w = width; vf->next->h = height;
 679     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 680 }
 681
 682 int vf_next_control(struct vf_instance_s* vf, int request, void* data){
 683     return vf->next->control(vf->next,request,data);
 684 }
 685
 686 void vf_extra_flip(struct vf_instance_s* vf) {
 687     vf_next_control(vf, VFCTRL_DRAW_OSD, NULL);
 688 #ifdef CONFIG_ASS
 689     vf_next_control(vf, VFCTRL_DRAW_EOSD, NULL);
 690 #endif
 691     vf_next_control(vf, VFCTRL_FLIP_PAGE, NULL);
 692 }
 693
 694 int vf_next_query_format(struct vf_instance_s* vf, unsigned int fmt){
 695     int flags=vf->next->query_format(vf->next,fmt);
 696     if(flags) flags|=vf->default_caps;
 697     return flags;
 698 }
 699
 700 int vf_next_put_image(struct vf_instance_s* vf,mp_image_t *mpi, double pts){
 701     return vf->next->put_image(vf->next,mpi, pts);
 702 }
 703
 704 void vf_next_draw_slice(struct vf_instance_s* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 705     if (vf->next->draw_slice) {
 706         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 707         return;
 708     }
 709     if (!vf->dmpi) {
 710         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 711         return;
 712     }
 713     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 714         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 715             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 716         return;
 717     }
 718     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 719         w, h, vf->dmpi->stride[0], stride[0]);
 720     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 721         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 722     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 723         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 724 }
 725
 726 //============================================================================
 727
 728 vf_instance_t* append_filters(vf_instance_t* last){
 729   vf_instance_t* vf;
 730   int i;
 731
 732   if(vf_settings) {
 733     // We want to add them in the 'right order'
 734     for(i = 0 ; vf_settings[i].name ; i++)
 735       /* NOP */;
 736     for(i-- ; i >= 0 ; i--) {
 737       //printf("Open filter %s\n",vf_settings[i].name);
 738       vf = vf_open_filter(last,vf_settings[i].name,vf_settings[i].attribs);
 739       if(vf) last=vf;
 740     }
 741   }
 742   return last;
 743 }
 744
 745 //============================================================================
 746
 747 void vf_uninit_filter(vf_instance_t* vf){
 748     if(vf->uninit) vf->uninit(vf);
 749     free_mp_image(vf->imgctx.static_images[0]);
 750     free_mp_image(vf->imgctx.static_images[1]);
 751     free_mp_image(vf->imgctx.temp_images[0]);
 752     free_mp_image(vf->imgctx.export_images[0]);
 753     free(vf);
 754 }
 755
 756 void vf_uninit_filter_chain(vf_instance_t* vf){
 757     while(vf){
 758         vf_instance_t* next=vf->next;
 759         vf_uninit_filter(vf);
 760         vf=next;
 761     }
 762 }