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