libmpcodecs/vf.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23 #include "config.h"
  24 #if HAVE_MALLOC_H
  25 #include <malloc.h>
  26 #endif
  27
  28 #ifdef MP_DEBUG
  29 #include <assert.h>
  30 #endif
  31
  32 #include "mp_msg.h"
  33 #include "m_option.h"
  34 #include "m_struct.h"
  35
  36
  37 #include "img_format.h"
  38 #include "mp_image.h"
  39 #include "vf.h"
  40
  41 #include "libvo/fastmemcpy.h"
  42 #include "libavutil/mem.h"
  43
  44 extern const vf_info_t vf_info_vo;
  45 extern const vf_info_t vf_info_rectangle;
  46 extern const vf_info_t vf_info_bmovl;
  47 extern const vf_info_t vf_info_crop;
  48 extern const vf_info_t vf_info_expand;
  49 extern const vf_info_t vf_info_pp;
  50 extern const vf_info_t vf_info_scale;
  51 extern const vf_info_t vf_info_format;
  52 extern const vf_info_t vf_info_noformat;
  53 extern const vf_info_t vf_info_flip;
  54 extern const vf_info_t vf_info_rotate;
  55 extern const vf_info_t vf_info_mirror;
  56 extern const vf_info_t vf_info_palette;
  57 extern const vf_info_t vf_info_lavc;
  58 extern const vf_info_t vf_info_zrmjpeg;
  59 extern const vf_info_t vf_info_dvbscale;
  60 extern const vf_info_t vf_info_cropdetect;
  61 extern const vf_info_t vf_info_test;
  62 extern const vf_info_t vf_info_noise;
  63 extern const vf_info_t vf_info_yvu9;
  64 extern const vf_info_t vf_info_lavcdeint;
  65 extern const vf_info_t vf_info_eq;
  66 extern const vf_info_t vf_info_eq2;
  67 extern const vf_info_t vf_info_gradfun;
  68 extern const vf_info_t vf_info_halfpack;
  69 extern const vf_info_t vf_info_dint;
  70 extern const vf_info_t vf_info_1bpp;
  71 extern const vf_info_t vf_info_2xsai;
  72 extern const vf_info_t vf_info_unsharp;
  73 extern const vf_info_t vf_info_swapuv;
  74 extern const vf_info_t vf_info_il;
  75 extern const vf_info_t vf_info_fil;
  76 extern const vf_info_t vf_info_boxblur;
  77 extern const vf_info_t vf_info_sab;
  78 extern const vf_info_t vf_info_smartblur;
  79 extern const vf_info_t vf_info_perspective;
  80 extern const vf_info_t vf_info_down3dright;
  81 extern const vf_info_t vf_info_field;
  82 extern const vf_info_t vf_info_denoise3d;
  83 extern const vf_info_t vf_info_hqdn3d;
  84 extern const vf_info_t vf_info_detc;
  85 extern const vf_info_t vf_info_telecine;
  86 extern const vf_info_t vf_info_tinterlace;
  87 extern const vf_info_t vf_info_tfields;
  88 extern const vf_info_t vf_info_ivtc;
  89 extern const vf_info_t vf_info_ilpack;
  90 extern const vf_info_t vf_info_dsize;
  91 extern const vf_info_t vf_info_decimate;
  92 extern const vf_info_t vf_info_softpulldown;
  93 extern const vf_info_t vf_info_pullup;
  94 extern const vf_info_t vf_info_filmdint;
  95 extern const vf_info_t vf_info_framestep;
  96 extern const vf_info_t vf_info_tile;
  97 extern const vf_info_t vf_info_delogo;
  98 extern const vf_info_t vf_info_remove_logo;
  99 extern const vf_info_t vf_info_hue;
 100 extern const vf_info_t vf_info_spp;
 101 extern const vf_info_t vf_info_uspp;
 102 extern const vf_info_t vf_info_fspp;
 103 extern const vf_info_t vf_info_pp7;
 104 extern const vf_info_t vf_info_yuvcsp;
 105 extern const vf_info_t vf_info_kerndeint;
 106 extern const vf_info_t vf_info_rgbtest;
 107 extern const vf_info_t vf_info_qp;
 108 extern const vf_info_t vf_info_phase;
 109 extern const vf_info_t vf_info_divtc;
 110 extern const vf_info_t vf_info_harddup;
 111 extern const vf_info_t vf_info_softskip;
 112 extern const vf_info_t vf_info_screenshot;
 113 extern const vf_info_t vf_info_ass;
 114 extern const vf_info_t vf_info_mcdeint;
 115 extern const vf_info_t vf_info_yadif;
 116 extern const vf_info_t vf_info_blackframe;
 117 extern const vf_info_t vf_info_geq;
 118 extern const vf_info_t vf_info_ow;
 119 extern const vf_info_t vf_info_fixpts;
 120 extern const vf_info_t vf_info_stereo3d;
 121
 122 // list of available filters:
 123 static const vf_info_t* const filter_list[]={
 124     &vf_info_rectangle,
 125 #ifdef HAVE_POSIX_SELECT
 126     &vf_info_bmovl,
 127 #endif
 128     &vf_info_crop,
 129     &vf_info_expand,
 130     &vf_info_scale,
 131 //    &vf_info_osd,
 132     &vf_info_vo,
 133     &vf_info_format,
 134     &vf_info_noformat,
 135     &vf_info_flip,
 136     &vf_info_rotate,
 137     &vf_info_mirror,
 138     &vf_info_palette,
 139     &vf_info_pp7,
 140 #ifdef CONFIG_FFMPEG
 141     &vf_info_pp,
 142     &vf_info_lavc,
 143     &vf_info_lavcdeint,
 144     &vf_info_screenshot,
 145     &vf_info_uspp,
 146 #endif
 147 #ifdef CONFIG_ZR
 148     &vf_info_zrmjpeg,
 149 #endif
 150     &vf_info_dvbscale,
 151     &vf_info_cropdetect,
 152     &vf_info_test,
 153     &vf_info_noise,
 154     &vf_info_yvu9,
 155     &vf_info_eq,
 156     &vf_info_eq2,
 157     &vf_info_gradfun,
 158     &vf_info_halfpack,
 159     &vf_info_dint,
 160     &vf_info_1bpp,
 161     &vf_info_2xsai,
 162     &vf_info_unsharp,
 163     &vf_info_swapuv,
 164     &vf_info_il,
 165     &vf_info_fil,
 166     &vf_info_boxblur,
 167     &vf_info_sab,
 168     &vf_info_smartblur,
 169     &vf_info_perspective,
 170     &vf_info_down3dright,
 171     &vf_info_field,
 172     &vf_info_denoise3d,
 173     &vf_info_hqdn3d,
 174     &vf_info_detc,
 175     &vf_info_telecine,
 176     &vf_info_tinterlace,
 177     &vf_info_tfields,
 178     &vf_info_ivtc,
 179     &vf_info_ilpack,
 180     &vf_info_dsize,
 181     &vf_info_decimate,
 182     &vf_info_softpulldown,
 183     &vf_info_pullup,
 184     &vf_info_filmdint,
 185     &vf_info_framestep,
 186     &vf_info_tile,
 187     &vf_info_delogo,
 188     &vf_info_remove_logo,
 189     &vf_info_hue,
 190 #ifdef CONFIG_FFMPEG_INTERNALS
 191     &vf_info_spp,
 192     &vf_info_fspp,
 193     &vf_info_qp,
 194     &vf_info_mcdeint,
 195     &vf_info_geq,
 196 #endif
 197     &vf_info_yuvcsp,
 198     &vf_info_kerndeint,
 199     &vf_info_rgbtest,
 200     &vf_info_phase,
 201     &vf_info_divtc,
 202     &vf_info_harddup,
 203     &vf_info_softskip,
 204 #ifdef CONFIG_ASS
 205     &vf_info_ass,
 206 #endif
 207     &vf_info_yadif,
 208     &vf_info_blackframe,
 209     &vf_info_ow,
 210     &vf_info_fixpts,
 211     &vf_info_stereo3d,
 212     NULL
 213 };
 214
 215 // For the vf option
 216 const m_obj_list_t vf_obj_list = {
 217   (void**)filter_list,
 218   M_ST_OFF(vf_info_t,name),
 219   M_ST_OFF(vf_info_t,info),
 220   M_ST_OFF(vf_info_t,opts)
 221 };
 222
 223 //============================================================================
 224 // mpi stuff:
 225
 226 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 227     int y;
 228     if(mpi->flags&MP_IMGFLAG_PLANAR){
 229         y0&=~1;h+=h&1;
 230         if(x0==0 && w==mpi->width){
 231             // full width clear:
 232             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 233             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 234             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 235         } else
 236         for(y=y0;y<y0+h;y+=2){
 237             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 238             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 239             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 240             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 241         }
 242         return;
 243     }
 244     // packed:
 245     for(y=y0;y<y0+h;y++){
 246         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 247         if(mpi->flags&MP_IMGFLAG_YUV){
 248             unsigned int* p=(unsigned int*) dst;
 249             int size=(mpi->bpp>>3)*w/4;
 250             int i;
 251 #if HAVE_BIGENDIAN
 252 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 253 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 254 #else
 255 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 256 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 257 #endif
 258             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 259                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 260                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 261             } else {
 262                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 263                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 264             }
 265         } else
 266             memset(dst,0,(mpi->bpp>>3)*w);
 267     }
 268 }
 269
 270 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 271   mp_image_t* mpi=NULL;
 272   int w2;
 273   int number = mp_imgtype >> 16;
 274
 275 #ifdef MP_DEBUG
 276   assert(w == -1 || w >= vf->w);
 277   assert(h == -1 || h >= vf->h);
 278   assert(vf->w > 0);
 279   assert(vf->h > 0);
 280 #endif
 281
 282 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 283
 284   if (w == -1) w = vf->w;
 285   if (h == -1) h = vf->h;
 286
 287   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 288
 289   if(vf->put_image==vf_next_put_image){
 290       // passthru mode, if the filter uses the fallback/default put_image() code
 291       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 292   }
 293
 294   // Note: we should call libvo first to check if it supports direct rendering
 295   // and if not, then fallback to software buffers:
 296   switch(mp_imgtype & 0xff){
 297   case MP_IMGTYPE_EXPORT:
 298     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 299     mpi=vf->imgctx.export_images[0];
 300     break;
 301   case MP_IMGTYPE_STATIC:
 302     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 303     mpi=vf->imgctx.static_images[0];
 304     break;
 305   case MP_IMGTYPE_TEMP:
 306     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 307     mpi=vf->imgctx.temp_images[0];
 308     break;
 309   case MP_IMGTYPE_IPB:
 310     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 311       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 312       mpi=vf->imgctx.temp_images[0];
 313       break;
 314     }
 315   case MP_IMGTYPE_IP:
 316     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 317     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 318     vf->imgctx.static_idx^=1;
 319     break;
 320   case MP_IMGTYPE_NUMBERED:
 321     if (number == -1) {
 322       int i;
 323       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 324         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 325           break;
 326       number = i;
 327     }
 328     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 329     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 330     mpi = vf->imgctx.numbered_images[number];
 331     mpi->number = number;
 332     break;
 333   }
 334   if(mpi){
 335     mpi->type=mp_imgtype;
 336     mpi->w=vf->w; mpi->h=vf->h;
 337     // keep buffer allocation status & color flags only:
 338 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 339     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 340     // accept restrictions, draw_slice and palette flags only:
 341     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK|MP_IMGFLAG_RGB_PALETTE);
 342     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 343     if(mpi->width!=w2 || mpi->height!=h){
 344 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 345         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 346             if(mpi->width<w2 || mpi->height<h){
 347                 // need to re-allocate buffer memory:
 348                 av_free(mpi->planes[0]);
 349                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 350                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 351             }
 352 //      } else {
 353         } {
 354             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 355             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 356         }
 357     }
 358     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 359     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 360
 361         // check libvo first!
 362         if(vf->get_image) vf->get_image(vf,mpi);
 363
 364         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 365           // non-direct and not yet allocated image. allocate it!
 366           if (!mpi->bpp) { // no way we can allocate this
 367               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 368                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 369               return NULL;
 370           }
 371
 372           // check if codec prefer aligned stride:
 373           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 374               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 375                          mpi->flags&MP_IMGFLAG_YUV) ?
 376                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 377               w2=((w+align)&(~align));
 378               if(mpi->width!=w2){
 379                   // we have to change width... check if we CAN co it:
 380                   int flags=vf->query_format(vf,outfmt); // should not fail
 381                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 382 //                printf("query -> 0x%X    \n",flags);
 383                   if(flags&VFCAP_ACCEPT_STRIDE){
 384                       mpi->width=w2;
 385                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 386                   }
 387               }
 388           }
 389
 390           mp_image_alloc_planes(mpi);
 391 //        printf("clearing img!\n");
 392           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 393         }
 394     }
 395     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 396         if(vf->start_slice) vf->start_slice(vf,mpi);
 397     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 398             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 399                   vf->info->name,
 400                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 401                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 402                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 403                   mpi->width,mpi->height,mpi->bpp,
 404                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 405                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 406                   mpi->bpp*mpi->width*mpi->height/8);
 407             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",
 408                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 409                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 410                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 411             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 412     }
 413
 414   mpi->qscale = NULL;
 415   }
 416   mpi->usage_count++;
 417 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 418 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 419 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 420   return mpi;
 421 }
 422
 423 //============================================================================
 424
 425 // By default vf doesn't accept MPEGPES
 426 static int vf_default_query_format(struct vf_instance *vf, unsigned int fmt){
 427   if(fmt == IMGFMT_MPEGPES) return 0;
 428   return vf_next_query_format(vf,fmt);
 429 }
 430
 431 struct vf_instance *vf_open_plugin_noerr(struct MPOpts *opts,
 432                                          const vf_info_t * const *filter_list,
 433                                          vf_instance_t *next, const char *name,
 434                                          char **args, int *retcode)
 435 {
 436     vf_instance_t* vf;
 437     int i;
 438     for(i=0;;i++){
 439         if(!filter_list[i]){
 440             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Couldn't find video filter '%s'.\n",name);
 441             return NULL; // no such filter!
 442         }
 443         if(!strcmp(filter_list[i]->name,name)) break;
 444     }
 445     vf = calloc(1, sizeof *vf);
 446     vf->opts = opts;
 447     vf->info=filter_list[i];
 448     vf->next=next;
 449     vf->config=vf_next_config;
 450     vf->control=vf_next_control;
 451     vf->query_format=vf_default_query_format;
 452     vf->put_image=vf_next_put_image;
 453     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 454     vf->default_reqs=0;
 455     if(vf->info->opts) { // vf_vo get some special argument
 456       const m_struct_t* st = vf->info->opts;
 457       void* vf_priv = m_struct_alloc(st);
 458       int n;
 459       for(n = 0 ; args && args[2*n] ; n++)
 460         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 461       vf->priv = vf_priv;
 462       args = NULL;
 463     } else // Otherwise we should have the '_oldargs_'
 464       if(args && !strcmp(args[0],"_oldargs_"))
 465         args = (char**)args[1];
 466       else
 467         args = NULL;
 468     *retcode = vf->info->vf_open(vf,(char*)args);
 469     if (*retcode > 0)
 470         return vf;
 471     free(vf);
 472     return NULL;
 473 }
 474
 475 struct vf_instance *vf_open_plugin(struct MPOpts *opts,
 476                                    const vf_info_t * const *filter_list,
 477                                    vf_instance_t *next, const char *name,
 478                                    char **args)
 479 {
 480     struct vf_instance *vf = vf_open_plugin_noerr(opts, filter_list, next,
 481                                                   name, args, &(int){0});
 482     if (!vf)
 483         mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Couldn't open video filter '%s'.\n",
 484                 name);
 485     return vf;
 486 }
 487
 488 vf_instance_t* vf_open_filter(struct MPOpts *opts, vf_instance_t* next, const char *name, char **args){
 489   if(args && strcmp(args[0],"_oldargs_")) {
 490     int i,l = 0;
 491     for(i = 0 ; args && args[2*i] ; i++)
 492       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 493     l += strlen(name);
 494     {
 495       char str[l+1];
 496       char* p = str;
 497       p += sprintf(str,"%s",name);
 498       for(i = 0 ; args && args[2*i] ; i++)
 499         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 500       mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 501              mp_gtext("Opening video filter: "), str);
 502     }
 503   } else if(strcmp(name,"vo")) {
 504     if(args && strcmp(args[0],"_oldargs_") == 0)
 505         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s=%s]\n",
 506                mp_gtext("Opening video filter: "), name, args[1]);
 507     else
 508         mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 509                mp_gtext("Opening video filter: "), name);
 510   }
 511   return vf_open_plugin(opts, filter_list,next,name,args);
 512 }
 513
 514 /**
 515  * \brief adds a filter before the last one (which should be the vo filter).
 516  * \param vf start of the filter chain.
 517  * \param name name of the filter to add.
 518  * \param args argument list for the filter.
 519  * \return pointer to the filter instance that was created.
 520  */
 521 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 522   struct MPOpts *opts = (*vf)->opts;
 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(opts, 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     struct MPOpts *opts = vf->opts;
 540     const unsigned int* p;
 541     unsigned int best=0;
 542     int ret;
 543     if((p=list)) while(*p){
 544         ret=vf->query_format(vf,*p);
 545         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 546         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 547         if(ret&1 && !best) best=*p; // best with conversion
 548         ++p;
 549     }
 550     if(best) return best; // bingo, they have common csp!
 551     // ok, then try with scale:
 552     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 553     vf=vf_open_filter(opts, vf,"scale",NULL);
 554     if(!vf) return 0; // failed to init "scale"
 555     // try the preferred csp first:
 556     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 557     // try the list again, now with "scaler" :
 558     if((p=list)) while(*p){
 559         ret=vf->query_format(vf,*p);
 560         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 561         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 562         if(ret&1 && !best) best=*p; // best with conversion
 563         ++p;
 564     }
 565     if(best) *vfp=vf; // else uninit vf  !FIXME!
 566     return best;
 567 }
 568
 569 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 570     dst->pict_type= src->pict_type;
 571     dst->fields = src->fields;
 572     dst->qscale_type= src->qscale_type;
 573     if(dst->width == src->width && dst->height == src->height){
 574         dst->qstride= src->qstride;
 575         dst->qscale= src->qscale;
 576     }
 577 }
 578
 579 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 580 {
 581     vf->continue_buffered_image = func;
 582 }
 583
 584 // Output the next buffered image (if any) from the filter chain.
 585 // The queue could be kept as a simple stack/list instead avoiding the
 586 // looping here, but there's currently no good context variable where
 587 // that could be stored so this was easier to implement.
 588
 589 int vf_output_queued_frame(vf_instance_t *vf)
 590 {
 591     while (1) {
 592         int ret;
 593         vf_instance_t *current;
 594         vf_instance_t *last=NULL;
 595         int (*tmp)(vf_instance_t *);
 596         for (current = vf; current; current = current->next)
 597             if (current->continue_buffered_image)
 598                 last = current;
 599         if (!last)
 600             return 0;
 601         tmp = last->continue_buffered_image;
 602         last->continue_buffered_image = NULL;
 603         ret = tmp(last);
 604         if (ret)
 605             return ret;
 606     }
 607 }
 608
 609
 610 /**
 611  * \brief Video config() function wrapper
 612  *
 613  * Blocks config() calls with different size or format for filters
 614  * with VFCAP_CONSTANT
 615  *
 616  * First call is redirected to vf->config.
 617  *
 618  * In following calls, it verifies that the configuration parameters
 619  * are unchanged, and returns either success or error.
 620  *
 621 */
 622 int vf_config_wrapper(struct vf_instance *vf,
 623                     int width, int height, int d_width, int d_height,
 624                     unsigned int flags, unsigned int outfmt)
 625 {
 626     int r;
 627     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 628         if ((vf->fmt.orig_width != width)
 629             || (vf->fmt.orig_height != height)
 630             || (vf->fmt.orig_fmt != outfmt)) {
 631             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"\nNew video file has different resolution or colorspace than the previous one.\n");
 632             return 0;
 633         }
 634         return 1;
 635     }
 636     vf->fmt.have_configured = 1;
 637     vf->fmt.orig_height = height;
 638     vf->fmt.orig_width = width;
 639     vf->fmt.orig_fmt = outfmt;
 640     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 641     if (!r) vf->fmt.have_configured = 0;
 642     return r;
 643 }
 644
 645 int vf_next_config(struct vf_instance *vf,
 646         int width, int height, int d_width, int d_height,
 647         unsigned int voflags, unsigned int outfmt){
 648     struct MPOpts *opts = vf->opts;
 649     int miss;
 650     int flags=vf->next->query_format(vf->next,outfmt);
 651     if(!flags){
 652         // hmm. colorspace mismatch!!!
 653         // let's insert the 'scale' filter, it does the job for us:
 654         vf_instance_t* vf2;
 655         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 656         vf2=vf_open_filter(opts, vf->next,"scale",NULL);
 657         if(!vf2) return 0; // shouldn't happen!
 658         vf->next=vf2;
 659         flags=vf->next->query_format(vf->next,outfmt);
 660         if(!flags){
 661             mp_tmsg(MSGT_VFILTER,MSGL_ERR,"Cannot find matching colorspace, even by inserting 'scale' :(\n");
 662             return 0; // FAIL
 663         }
 664     }
 665     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 666     miss=vf->default_reqs - (flags&vf->default_reqs);
 667     if(miss&VFCAP_ACCEPT_STRIDE){
 668         // vf requires stride support but vf->next doesn't support it!
 669         // let's insert the 'expand' filter, it does the job for us:
 670         vf_instance_t* vf2=vf_open_filter(opts, vf->next,"expand",NULL);
 671         if(!vf2) return 0; // shouldn't happen!
 672         vf->next=vf2;
 673     }
 674     vf->next->w = width; vf->next->h = height;
 675     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 676 }
 677
 678 int vf_next_control(struct vf_instance *vf, int request, void* data){
 679     return vf->next->control(vf->next,request,data);
 680 }
 681
 682 int vf_next_query_format(struct vf_instance *vf, unsigned int fmt){
 683     int flags=vf->next->query_format(vf->next,fmt);
 684     if(flags) flags|=vf->default_caps;
 685     return flags;
 686 }
 687
 688 int vf_next_put_image(struct vf_instance *vf,mp_image_t *mpi, double pts){
 689     return vf->next->put_image(vf->next,mpi, pts);
 690 }
 691
 692 void vf_next_draw_slice(struct vf_instance *vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 693     if (vf->next->draw_slice) {
 694         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 695         return;
 696     }
 697     if (!vf->dmpi) {
 698         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 699         return;
 700     }
 701     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 702         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 703             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 704         return;
 705     }
 706     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 707         w, h, vf->dmpi->stride[0], stride[0]);
 708     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 709         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 710     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 711         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 712 }
 713
 714 //============================================================================
 715
 716 vf_instance_t *append_filters(vf_instance_t* last,
 717                               struct m_obj_settings *vf_settings)
 718 {
 719   struct MPOpts *opts = last->opts;
 720   vf_instance_t* vf;
 721   int i;
 722
 723   if(vf_settings) {
 724     // We want to add them in the 'right order'
 725     for(i = 0 ; vf_settings[i].name ; i++)
 726       /* NOP */;
 727     for(i-- ; i >= 0 ; i--) {
 728       //printf("Open filter %s\n",vf_settings[i].name);
 729       vf = vf_open_filter(opts, last,vf_settings[i].name,vf_settings[i].attribs);
 730       if(vf) last=vf;
 731     }
 732   }
 733   return last;
 734 }
 735
 736 //============================================================================
 737
 738 void vf_uninit_filter(vf_instance_t* vf){
 739     if(vf->uninit) vf->uninit(vf);
 740     free_mp_image(vf->imgctx.static_images[0]);
 741     free_mp_image(vf->imgctx.static_images[1]);
 742     free_mp_image(vf->imgctx.temp_images[0]);
 743     free_mp_image(vf->imgctx.export_images[0]);
 744     for (int i = 0; i < NUM_NUMBERED_MPI; i++)
 745         free_mp_image(vf->imgctx.numbered_images[i]);
 746     free(vf);
 747 }
 748
 749 void vf_uninit_filter_chain(vf_instance_t* vf){
 750     while(vf){
 751         vf_instance_t* next=vf->next;
 752         vf_uninit_filter(vf);
 753         vf=next;
 754     }
 755 }