libmpcodecs/vf_scale.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <inttypes.h>
   5
   6 #include "config.h"
   7 #include "mp_msg.h"
   8 #include "cpudetect.h"
   9
  10 #include "img_format.h"
  11 #include "mp_image.h"
  12 #include "vf.h"
  13 #include "fmt-conversion.h"
  14 #include "mpbswap.h"
  15
  16 #include "libswscale/swscale.h"
  17 #include "vf_scale.h"
  18
  19 #include "m_option.h"
  20 #include "m_struct.h"
  21
  22 static struct vf_priv_s {
  23     int w,h;
  24     int v_chr_drop;
  25     double param[2];
  26     unsigned int fmt;
  27     struct SwsContext *ctx;
  28     struct SwsContext *ctx2; //for interlaced slices only
  29     unsigned char* palette;
  30     int interlaced;
  31     int noup;
  32     int accurate_rnd;
  33     int query_format_cache[64];
  34 } const vf_priv_dflt = {
  35   -1,-1,
  36   0,
  37   {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT},
  38   0,
  39   NULL,
  40   NULL,
  41   NULL
  42 };
  43
  44 extern int opt_screen_size_x;
  45 extern int opt_screen_size_y;
  46 extern float screen_size_xy;
  47
  48 //===========================================================================//
  49
  50 void sws_getFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam);
  51
  52 static unsigned int outfmt_list[]={
  53 // YUV:
  54     IMGFMT_444P,
  55     IMGFMT_422P,
  56     IMGFMT_YV12,
  57     IMGFMT_I420,
  58     IMGFMT_IYUV,
  59     IMGFMT_YVU9,
  60     IMGFMT_IF09,
  61     IMGFMT_411P,
  62     IMGFMT_NV12,
  63     IMGFMT_NV21,
  64     IMGFMT_YUY2,
  65     IMGFMT_UYVY,
  66 // RGB and grayscale (Y8 and Y800):
  67     IMGFMT_BGR32,
  68     IMGFMT_RGB32,
  69     IMGFMT_BGR24,
  70     IMGFMT_RGB24,
  71     IMGFMT_BGR16,
  72     IMGFMT_RGB16,
  73     IMGFMT_BGR15,
  74     IMGFMT_RGB15,
  75     IMGFMT_Y800,
  76     IMGFMT_Y8,
  77     IMGFMT_BGR8,
  78     IMGFMT_RGB8,
  79     IMGFMT_BGR4,
  80     IMGFMT_RGB4,
  81     IMGFMT_BG4B,
  82     IMGFMT_RG4B,
  83     IMGFMT_BGR1,
  84     IMGFMT_RGB1,
  85     0
  86 };
  87
  88 static unsigned int find_best_out(vf_instance_t *vf){
  89     unsigned int best=0;
  90     int i;
  91
  92     // find the best outfmt:
  93     for(i=0; i<sizeof(outfmt_list)/sizeof(int)-1; i++){
  94         const int format= outfmt_list[i];
  95         int ret= vf->priv->query_format_cache[i]-1;
  96         if(ret == -1){
  97             ret= vf_next_query_format(vf, outfmt_list[i]);
  98             vf->priv->query_format_cache[i]= ret+1;
  99         }
 100
 101         mp_msg(MSGT_VFILTER,MSGL_DBG2,"scale: query(%s) -> %d\n",vo_format_name(format),ret&3);
 102         if(ret&VFCAP_CSP_SUPPORTED_BY_HW){
 103             best=format; // no conversion -> bingo!
 104             break;
 105         }
 106         if(ret&VFCAP_CSP_SUPPORTED && !best)
 107             best=format; // best with conversion
 108     }
 109     return best;
 110 }
 111
 112 static int config(struct vf_instance_s* vf,
 113         int width, int height, int d_width, int d_height,
 114         unsigned int flags, unsigned int outfmt){
 115     unsigned int best=find_best_out(vf);
 116     int vo_flags;
 117     int int_sws_flags=0;
 118     int round_w=0, round_h=0;
 119     int i;
 120     SwsFilter *srcFilter, *dstFilter;
 121     enum PixelFormat dfmt, sfmt;
 122
 123     if(!best){
 124         mp_msg(MSGT_VFILTER,MSGL_WARN,"SwScale: no supported outfmt found :(\n");
 125         return 0;
 126     }
 127     sfmt = imgfmt2pixfmt(outfmt);
 128     if (outfmt == IMGFMT_RGB8 || outfmt == IMGFMT_BGR8) sfmt = PIX_FMT_PAL8;
 129     dfmt = imgfmt2pixfmt(best);
 130
 131     vo_flags=vf->next->query_format(vf->next,best);
 132
 133     // scaling to dwidth*d_height, if all these TRUE:
 134     // - option -zoom
 135     // - no other sw/hw up/down scaling avail.
 136     // - we're after postproc
 137     // - user didn't set w:h
 138     if(!(vo_flags&VFCAP_POSTPROC) && (flags&4) &&
 139             vf->priv->w<0 && vf->priv->h<0){    // -zoom
 140         int x=(vo_flags&VFCAP_SWSCALE) ? 0 : 1;
 141         if(d_width<width || d_height<height){
 142             // downscale!
 143             if(vo_flags&VFCAP_HWSCALE_DOWN) x=0;
 144         } else {
 145             // upscale:
 146             if(vo_flags&VFCAP_HWSCALE_UP) x=0;
 147         }
 148         if(x){
 149             // user wants sw scaling! (-zoom)
 150             vf->priv->w=d_width;
 151             vf->priv->h=d_height;
 152         }
 153     }
 154
 155     if(vf->priv->noup){
 156         if((vf->priv->w > width) + (vf->priv->h > height) >= vf->priv->noup){
 157             vf->priv->w= width;
 158             vf->priv->h= height;
 159         }
 160     }
 161
 162     if (vf->priv->w <= -8) {
 163       vf->priv->w += 8;
 164       round_w = 1;
 165     }
 166     if (vf->priv->h <= -8) {
 167       vf->priv->h += 8;
 168       round_h = 1;
 169     }
 170
 171     if (vf->priv->w < -3 || vf->priv->h < -3 ||
 172          (vf->priv->w < -1 && vf->priv->h < -1)) {
 173       // TODO: establish a direct connection to the user's brain
 174       // and find out what the heck he thinks MPlayer should do
 175       // with this nonsense.
 176       mp_msg(MSGT_VFILTER, MSGL_ERR, "SwScale: EUSERBROKEN Check your parameters, they make no sense!\n");
 177       return 0;
 178     }
 179
 180     if (vf->priv->w == -1)
 181       vf->priv->w = width;
 182     if (vf->priv->w == 0)
 183       vf->priv->w = d_width;
 184
 185     if (vf->priv->h == -1)
 186       vf->priv->h = height;
 187     if (vf->priv->h == 0)
 188       vf->priv->h = d_height;
 189
 190     if (vf->priv->w == -3)
 191       vf->priv->w = vf->priv->h * width / height;
 192     if (vf->priv->w == -2)
 193       vf->priv->w = vf->priv->h * d_width / d_height;
 194
 195     if (vf->priv->h == -3)
 196       vf->priv->h = vf->priv->w * height / width;
 197     if (vf->priv->h == -2)
 198       vf->priv->h = vf->priv->w * d_height / d_width;
 199
 200     if (round_w)
 201       vf->priv->w = ((vf->priv->w + 8) / 16) * 16;
 202     if (round_h)
 203       vf->priv->h = ((vf->priv->h + 8) / 16) * 16;
 204
 205     // calculate the missing parameters:
 206     switch(best) {
 207     case IMGFMT_YV12:           /* YV12 needs w & h rounded to 2 */
 208     case IMGFMT_I420:
 209     case IMGFMT_IYUV:
 210     case IMGFMT_NV12:
 211     case IMGFMT_NV21:
 212       vf->priv->h = (vf->priv->h + 1) & ~1;
 213     case IMGFMT_YUY2:           /* YUY2 needs w rounded to 2 */
 214     case IMGFMT_UYVY:
 215       vf->priv->w = (vf->priv->w + 1) & ~1;
 216     }
 217
 218     mp_msg(MSGT_VFILTER,MSGL_DBG2,"SwScale: scaling %dx%d %s to %dx%d %s  \n",
 219         width,height,vo_format_name(outfmt),
 220         vf->priv->w,vf->priv->h,vo_format_name(best));
 221
 222     // free old ctx:
 223     if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
 224     if(vf->priv->ctx2)sws_freeContext(vf->priv->ctx2);
 225
 226     // new swscaler:
 227     sws_getFlagsAndFilterFromCmdLine(&int_sws_flags, &srcFilter, &dstFilter);
 228     int_sws_flags|= vf->priv->v_chr_drop << SWS_SRC_V_CHR_DROP_SHIFT;
 229     int_sws_flags|= vf->priv->accurate_rnd * SWS_ACCURATE_RND;
 230     vf->priv->ctx=sws_getContext(width, height >> vf->priv->interlaced,
 231             sfmt,
 232                   vf->priv->w, vf->priv->h >> vf->priv->interlaced,
 233             dfmt,
 234             int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, vf->priv->param);
 235     if(vf->priv->interlaced){
 236         vf->priv->ctx2=sws_getContext(width, height >> 1,
 237             sfmt,
 238                   vf->priv->w, vf->priv->h >> 1,
 239             dfmt,
 240             int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, vf->priv->param);
 241     }
 242     if(!vf->priv->ctx){
 243         // error...
 244         mp_msg(MSGT_VFILTER,MSGL_WARN,"Couldn't init SwScaler for this setup\n");
 245         return 0;
 246     }
 247     vf->priv->fmt=best;
 248
 249     if(vf->priv->palette){
 250         free(vf->priv->palette);
 251         vf->priv->palette=NULL;
 252     }
 253     switch(best){
 254     case IMGFMT_RGB8: {
 255       /* set 332 palette for 8 bpp */
 256         vf->priv->palette=malloc(4*256);
 257         for(i=0; i<256; i++){
 258             vf->priv->palette[4*i+0]=4*(i>>6)*21;
 259             vf->priv->palette[4*i+1]=4*((i>>3)&7)*9;
 260             vf->priv->palette[4*i+2]=4*((i&7)&7)*9;
 261             vf->priv->palette[4*i+3]=0;
 262         }
 263         break; }
 264     case IMGFMT_BGR8: {
 265       /* set 332 palette for 8 bpp */
 266         vf->priv->palette=malloc(4*256);
 267         for(i=0; i<256; i++){
 268             vf->priv->palette[4*i+0]=4*(i&3)*21;
 269             vf->priv->palette[4*i+1]=4*((i>>2)&7)*9;
 270             vf->priv->palette[4*i+2]=4*((i>>5)&7)*9;
 271             vf->priv->palette[4*i+3]=0;
 272         }
 273         break; }
 274     case IMGFMT_BGR4:
 275     case IMGFMT_BG4B: {
 276         vf->priv->palette=malloc(4*16);
 277         for(i=0; i<16; i++){
 278             vf->priv->palette[4*i+0]=4*(i&1)*63;
 279             vf->priv->palette[4*i+1]=4*((i>>1)&3)*21;
 280             vf->priv->palette[4*i+2]=4*((i>>3)&1)*63;
 281             vf->priv->palette[4*i+3]=0;
 282         }
 283         break; }
 284     case IMGFMT_RGB4:
 285     case IMGFMT_RG4B: {
 286         vf->priv->palette=malloc(4*16);
 287         for(i=0; i<16; i++){
 288             vf->priv->palette[4*i+0]=4*(i>>3)*63;
 289             vf->priv->palette[4*i+1]=4*((i>>1)&3)*21;
 290             vf->priv->palette[4*i+2]=4*((i&1)&1)*63;
 291             vf->priv->palette[4*i+3]=0;
 292         }
 293         break; }
 294     }
 295
 296     if(!opt_screen_size_x && !opt_screen_size_y && !(screen_size_xy >= 0.001)){
 297         // Compute new d_width and d_height, preserving aspect
 298         // while ensuring that both are >= output size in pixels.
 299         if (vf->priv->h * d_width > vf->priv->w * d_height) {
 300                 d_width = vf->priv->h * d_width / d_height;
 301                 d_height = vf->priv->h;
 302         } else {
 303                 d_height = vf->priv->w * d_height / d_width;
 304                 d_width = vf->priv->w;
 305         }
 306         //d_width=d_width*vf->priv->w/width;
 307         //d_height=d_height*vf->priv->h/height;
 308     }
 309     return vf_next_config(vf,vf->priv->w,vf->priv->h,d_width,d_height,flags,best);
 310 }
 311
 312 static void start_slice(struct vf_instance_s* vf, mp_image_t *mpi){
 313 //    printf("start_slice called! flag=%d\n",mpi->flags&MP_IMGFLAG_DRAW_CALLBACK);
 314     if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)) return; // shouldn't happen
 315     // they want slices!!! allocate the buffer.
 316     mpi->priv=vf->dmpi=vf_get_image(vf->next,vf->priv->fmt,
 317 //      mpi->type, mpi->flags & (~MP_IMGFLAG_DRAW_CALLBACK),
 318         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 319         vf->priv->w, vf->priv->h);
 320 }
 321
 322 static void scale(struct SwsContext *sws1, struct SwsContext *sws2, uint8_t *src[MP_MAX_PLANES], int src_stride[MP_MAX_PLANES],
 323                   int y, int h,  uint8_t *dst[MP_MAX_PLANES], int dst_stride[MP_MAX_PLANES], int interlaced){
 324     uint8_t *src2[MP_MAX_PLANES]={src[0], src[1], src[2]};
 325 #ifdef WORDS_BIGENDIAN
 326     uint32_t pal2[256];
 327     if (src[1] && !src[2]){
 328         int i;
 329         for(i=0; i<256; i++)
 330             pal2[i]= bswap_32(((uint32_t*)src[1])[i]);
 331         src2[1]= pal2;
 332     }
 333 #endif
 334
 335     if(interlaced){
 336         int i;
 337         uint8_t *dst2[MP_MAX_PLANES]={dst[0], dst[1], dst[2]};
 338         int src_stride2[MP_MAX_PLANES]={2*src_stride[0], 2*src_stride[1], 2*src_stride[2]};
 339         int dst_stride2[MP_MAX_PLANES]={2*dst_stride[0], 2*dst_stride[1], 2*dst_stride[2]};
 340
 341         sws_scale_ordered(sws1, src2, src_stride2, y>>1, h>>1, dst2, dst_stride2);
 342         for(i=0; i<3; i++){
 343             src2[i] += src_stride[i];
 344             dst2[i] += dst_stride[i];
 345         }
 346         sws_scale_ordered(sws2, src2, src_stride2, y>>1, h>>1, dst2, dst_stride2);
 347     }else{
 348         sws_scale_ordered(sws1, src2, src_stride, y, h, dst, dst_stride);
 349     }
 350 }
 351
 352 static void draw_slice(struct vf_instance_s* vf,
 353         unsigned char** src, int* stride, int w,int h, int x, int y){
 354     mp_image_t *dmpi=vf->dmpi;
 355     if(!dmpi){
 356         mp_msg(MSGT_VFILTER,MSGL_FATAL,"vf_scale: draw_slice() called with dmpi=NULL (no get_image?)\n");
 357         return;
 358     }
 359 //    printf("vf_scale::draw_slice() y=%d h=%d\n",y,h);
 360     scale(vf->priv->ctx, vf->priv->ctx2, src, stride, y, h, dmpi->planes, dmpi->stride, vf->priv->interlaced);
 361 }
 362
 363 static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
 364     mp_image_t *dmpi=mpi->priv;
 365
 366 //    printf("vf_scale::put_image(): processing whole frame! dmpi=%p flag=%d\n",
 367 //      dmpi, (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK));
 368
 369   if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK && dmpi)){
 370
 371     // hope we'll get DR buffer:
 372     dmpi=vf_get_image(vf->next,vf->priv->fmt,
 373         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 374         vf->priv->w, vf->priv->h);
 375
 376       scale(vf->priv->ctx, vf->priv->ctx, mpi->planes,mpi->stride,0,mpi->h,dmpi->planes,dmpi->stride, vf->priv->interlaced);
 377   }
 378
 379     if(vf->priv->w==mpi->w && vf->priv->h==mpi->h){
 380         // just conversion, no scaling -> keep postprocessing data
 381         // this way we can apply pp filter to non-yv12 source using scaler
 382         vf_clone_mpi_attributes(dmpi, mpi);
 383     }
 384
 385     if(vf->priv->palette) dmpi->planes[1]=vf->priv->palette; // export palette!
 386
 387     return vf_next_put_image(vf,dmpi, pts);
 388 }
 389
 390 static int control(struct vf_instance_s* vf, int request, void* data){
 391     int *table;
 392     int *inv_table;
 393     int r;
 394     int brightness, contrast, saturation, srcRange, dstRange;
 395     vf_equalizer_t *eq;
 396
 397   if(vf->priv->ctx)
 398     switch(request){
 399     case VFCTRL_GET_EQUALIZER:
 400         r= sws_getColorspaceDetails(vf->priv->ctx, &inv_table, &srcRange, &table, &dstRange, &brightness, &contrast, &saturation);
 401         if(r<0) break;
 402
 403         eq = data;
 404         if (!strcmp(eq->item,"brightness")) {
 405                 eq->value =  ((brightness*100) + (1<<15))>>16;
 406         }
 407         else if (!strcmp(eq->item,"contrast")) {
 408                 eq->value = (((contrast  *100) + (1<<15))>>16) - 100;
 409         }
 410         else if (!strcmp(eq->item,"saturation")) {
 411                 eq->value = (((saturation*100) + (1<<15))>>16) - 100;
 412         }
 413         else
 414                 break;
 415         return CONTROL_TRUE;
 416     case VFCTRL_SET_EQUALIZER:
 417         r= sws_getColorspaceDetails(vf->priv->ctx, &inv_table, &srcRange, &table, &dstRange, &brightness, &contrast, &saturation);
 418         if(r<0) break;
 419 //printf("set %f %f %f\n", brightness/(float)(1<<16), contrast/(float)(1<<16), saturation/(float)(1<<16));
 420         eq = data;
 421
 422         if (!strcmp(eq->item,"brightness")) {
 423                 brightness = (( eq->value     <<16) + 50)/100;
 424         }
 425         else if (!strcmp(eq->item,"contrast")) {
 426                 contrast   = (((eq->value+100)<<16) + 50)/100;
 427         }
 428         else if (!strcmp(eq->item,"saturation")) {
 429                 saturation = (((eq->value+100)<<16) + 50)/100;
 430         }
 431         else
 432                 break;
 433
 434         r= sws_setColorspaceDetails(vf->priv->ctx, inv_table, srcRange, table, dstRange, brightness, contrast, saturation);
 435         if(r<0) break;
 436         if(vf->priv->ctx2){
 437             r= sws_setColorspaceDetails(vf->priv->ctx2, inv_table, srcRange, table, dstRange, brightness, contrast, saturation);
 438             if(r<0) break;
 439         }
 440
 441         return CONTROL_TRUE;
 442     default:
 443         break;
 444     }
 445
 446     return vf_next_control(vf,request,data);
 447 }
 448
 449 //===========================================================================//
 450
 451 //  supported Input formats: YV12, I420, IYUV, YUY2, UYVY, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8, Y800
 452
 453 static int query_format(struct vf_instance_s* vf, unsigned int fmt){
 454     switch(fmt){
 455     case IMGFMT_YV12:
 456     case IMGFMT_I420:
 457     case IMGFMT_IYUV:
 458     case IMGFMT_UYVY:
 459     case IMGFMT_YUY2:
 460     case IMGFMT_BGR32:
 461     case IMGFMT_BGR24:
 462     case IMGFMT_BGR16:
 463     case IMGFMT_BGR15:
 464     case IMGFMT_RGB32:
 465     case IMGFMT_RGB24:
 466     case IMGFMT_Y800:
 467     case IMGFMT_Y8:
 468     case IMGFMT_YVU9:
 469     case IMGFMT_IF09:
 470     case IMGFMT_444P:
 471     case IMGFMT_422P:
 472     case IMGFMT_411P:
 473     case IMGFMT_BGR8:
 474     case IMGFMT_RGB8:
 475     case IMGFMT_BG4B:
 476     case IMGFMT_RG4B:
 477     {
 478         unsigned int best=find_best_out(vf);
 479         int flags;
 480         if(!best) return 0;      // no matching out-fmt
 481         flags=vf_next_query_format(vf,best);
 482         if(!(flags&(VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW))) return 0; // huh?
 483         if(fmt!=best) flags&=~VFCAP_CSP_SUPPORTED_BY_HW;
 484         // do not allow scaling, if we are before the PP fliter!
 485         if(!(flags&VFCAP_POSTPROC)) flags|=VFCAP_SWSCALE;
 486         return flags;
 487       }
 488     }
 489     return 0;   // nomatching in-fmt
 490 }
 491
 492 static void uninit(struct vf_instance_s *vf){
 493     if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
 494     if(vf->priv->ctx2) sws_freeContext(vf->priv->ctx2);
 495     if(vf->priv->palette) free(vf->priv->palette);
 496     free(vf->priv);
 497 }
 498
 499 static int open(vf_instance_t *vf, char* args){
 500     vf->config=config;
 501     vf->start_slice=start_slice;
 502     vf->draw_slice=draw_slice;
 503     vf->put_image=put_image;
 504     vf->query_format=query_format;
 505     vf->control= control;
 506     vf->uninit=uninit;
 507     if(!vf->priv) {
 508     vf->priv=malloc(sizeof(struct vf_priv_s));
 509     // TODO: parse args ->
 510     vf->priv->ctx=NULL;
 511     vf->priv->ctx2=NULL;
 512     vf->priv->w=
 513     vf->priv->h=-1;
 514     vf->priv->v_chr_drop=0;
 515     vf->priv->accurate_rnd=0;
 516     vf->priv->param[0]=
 517     vf->priv->param[1]=SWS_PARAM_DEFAULT;
 518     vf->priv->palette=NULL;
 519     } // if(!vf->priv)
 520     if(args) sscanf(args, "%d:%d:%d:%lf:%lf",
 521     &vf->priv->w,
 522     &vf->priv->h,
 523     &vf->priv->v_chr_drop,
 524     &vf->priv->param[0],
 525     &vf->priv->param[1]);
 526     mp_msg(MSGT_VFILTER,MSGL_V,"SwScale params: %d x %d (-1=no scaling)\n",
 527     vf->priv->w,
 528     vf->priv->h);
 529
 530     return 1;
 531 }
 532
 533 //global sws_flags from the command line
 534 int sws_flags=2;
 535
 536 //global srcFilter
 537 static SwsFilter *src_filter= NULL;
 538
 539 float sws_lum_gblur= 0.0;
 540 float sws_chr_gblur= 0.0;
 541 int sws_chr_vshift= 0;
 542 int sws_chr_hshift= 0;
 543 float sws_chr_sharpen= 0.0;
 544 float sws_lum_sharpen= 0.0;
 545
 546 int get_sws_cpuflags(void){
 547     return
 548           (gCpuCaps.hasMMX   ? SWS_CPU_CAPS_MMX   : 0)
 549         | (gCpuCaps.hasMMX2  ? SWS_CPU_CAPS_MMX2  : 0)
 550         | (gCpuCaps.has3DNow ? SWS_CPU_CAPS_3DNOW : 0)
 551         | (gCpuCaps.hasAltiVec ? SWS_CPU_CAPS_ALTIVEC : 0);
 552 }
 553
 554 void sws_getFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam)
 555 {
 556         static int firstTime=1;
 557         *flags=0;
 558
 559 #if ARCH_X86
 560         if(gCpuCaps.hasMMX)
 561                 __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
 562 #endif
 563         if(firstTime)
 564         {
 565                 firstTime=0;
 566                 *flags= SWS_PRINT_INFO;
 567         }
 568         else if( mp_msg_test(MSGT_VFILTER,MSGL_DBG2) ) *flags= SWS_PRINT_INFO;
 569
 570         if(src_filter) sws_freeFilter(src_filter);
 571
 572         src_filter= sws_getDefaultFilter(
 573                 sws_lum_gblur, sws_chr_gblur,
 574                 sws_lum_sharpen, sws_chr_sharpen,
 575                 sws_chr_hshift, sws_chr_vshift, verbose>1);
 576
 577         switch(sws_flags)
 578         {
 579                 case 0: *flags|= SWS_FAST_BILINEAR; break;
 580                 case 1: *flags|= SWS_BILINEAR; break;
 581                 case 2: *flags|= SWS_BICUBIC; break;
 582                 case 3: *flags|= SWS_X; break;
 583                 case 4: *flags|= SWS_POINT; break;
 584                 case 5: *flags|= SWS_AREA; break;
 585                 case 6: *flags|= SWS_BICUBLIN; break;
 586                 case 7: *flags|= SWS_GAUSS; break;
 587                 case 8: *flags|= SWS_SINC; break;
 588                 case 9: *flags|= SWS_LANCZOS; break;
 589                 case 10:*flags|= SWS_SPLINE; break;
 590                 default:*flags|= SWS_BILINEAR; break;
 591         }
 592
 593         *srcFilterParam= src_filter;
 594         *dstFilterParam= NULL;
 595 }
 596
 597 // will use sws_flags & src_filter (from cmd line)
 598 struct SwsContext *sws_getContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat)
 599 {
 600         int flags;
 601         SwsFilter *dstFilterParam, *srcFilterParam;
 602         enum PixelFormat dfmt, sfmt;
 603
 604         dfmt = imgfmt2pixfmt(dstFormat);
 605         sfmt = imgfmt2pixfmt(srcFormat);
 606         if (srcFormat == IMGFMT_RGB8 || srcFormat == IMGFMT_BGR8) sfmt = PIX_FMT_PAL8;
 607         sws_getFlagsAndFilterFromCmdLine(&flags, &srcFilterParam, &dstFilterParam);
 608
 609         return sws_getContext(srcW, srcH, sfmt, dstW, dstH, dfmt, flags | get_sws_cpuflags(), srcFilterParam, dstFilterParam, NULL);
 610 }
 611
 612 /// An example of presets usage
 613 static struct size_preset {
 614   char* name;
 615   int w, h;
 616 } vf_size_presets_defs[] = {
 617   // TODO add more 'standard' resolutions
 618   { "qntsc", 352, 240 },
 619   { "qpal", 352, 288 },
 620   { "ntsc", 720, 480 },
 621   { "pal", 720, 576 },
 622   { "sntsc", 640, 480 },
 623   { "spal", 768, 576 },
 624   { NULL, 0, 0}
 625 };
 626
 627 #define ST_OFF(f) M_ST_OFF(struct size_preset,f)
 628 static m_option_t vf_size_preset_fields[] = {
 629   {"w", ST_OFF(w), CONF_TYPE_INT, M_OPT_MIN,1 ,0, NULL},
 630   {"h", ST_OFF(h), CONF_TYPE_INT, M_OPT_MIN,1 ,0, NULL},
 631   { NULL, NULL, 0, 0, 0, 0,  NULL }
 632 };
 633
 634 static m_struct_t vf_size_preset = {
 635   "scale_size_preset",
 636   sizeof(struct size_preset),
 637   NULL,
 638   vf_size_preset_fields
 639 };
 640
 641 static m_struct_t vf_opts;
 642 static m_obj_presets_t size_preset = {
 643   &vf_size_preset, // Input struct desc
 644   &vf_opts, // Output struct desc
 645   vf_size_presets_defs, // The list of presets
 646   ST_OFF(name) // At wich offset is the name field in the preset struct
 647 };
 648
 649 /// Now the options
 650 #undef ST_OFF
 651 #define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
 652 static m_option_t vf_opts_fields[] = {
 653   {"w", ST_OFF(w), CONF_TYPE_INT, M_OPT_MIN,-11,0, NULL},
 654   {"h", ST_OFF(h), CONF_TYPE_INT, M_OPT_MIN,-11,0, NULL},
 655   {"interlaced", ST_OFF(interlaced), CONF_TYPE_INT, M_OPT_RANGE, 0, 1, NULL},
 656   {"chr-drop", ST_OFF(v_chr_drop), CONF_TYPE_INT, M_OPT_RANGE, 0, 3, NULL},
 657   {"param" , ST_OFF(param[0]), CONF_TYPE_DOUBLE, M_OPT_RANGE, 0.0, 100.0, NULL},
 658   {"param2", ST_OFF(param[1]), CONF_TYPE_DOUBLE, M_OPT_RANGE, 0.0, 100.0, NULL},
 659   // Note that here the 2 field is NULL (ie 0)
 660   // As we want this option to act on the option struct itself
 661   {"presize", 0, CONF_TYPE_OBJ_PRESETS, 0, 0, 0, &size_preset},
 662   {"noup", ST_OFF(noup), CONF_TYPE_INT, M_OPT_RANGE, 0, 2, NULL},
 663   {"arnd", ST_OFF(accurate_rnd), CONF_TYPE_FLAG, 0, 0, 1, NULL},
 664   { NULL, NULL, 0, 0, 0, 0,  NULL }
 665 };
 666
 667 static m_struct_t vf_opts = {
 668   "scale",
 669   sizeof(struct vf_priv_s),
 670   &vf_priv_dflt,
 671   vf_opts_fields
 672 };
 673
 674 const vf_info_t vf_info_scale = {
 675     "software scaling",
 676     "scale",
 677     "A'rpi",
 678     "",
 679     open,
 680     &vf_opts
 681 };
 682
 683 //===========================================================================//