libmpcodecs/vf_scale.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 #include <inttypes.h>
  23
  24 #include "config.h"
  25 #include "mp_msg.h"
  26 #include "cpudetect.h"
  27
  28 #include "img_format.h"
  29 #include "mp_image.h"
  30 #include "vf.h"
  31 #include "fmt-conversion.h"
  32 #include "mpbswap.h"
  33
  34 #include "libswscale/swscale.h"
  35 #include "vf_scale.h"
  36
  37 #include "m_option.h"
  38 #include "m_struct.h"
  39
  40 static struct vf_priv_s {
  41     int w,h;
  42     int v_chr_drop;
  43     double param[2];
  44     unsigned int fmt;
  45     struct SwsContext *ctx;
  46     struct SwsContext *ctx2; //for interlaced slices only
  47     unsigned char* palette;
  48     int interlaced;
  49     int noup;
  50     int accurate_rnd;
  51 } const vf_priv_dflt = {
  52   -1,-1,
  53   0,
  54   {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT},
  55   0,
  56   NULL,
  57   NULL,
  58   NULL
  59 };
  60
  61 extern int opt_screen_size_x;
  62 extern int opt_screen_size_y;
  63 extern float screen_size_xy;
  64
  65 //===========================================================================//
  66
  67 void sws_getFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam);
  68
  69 static unsigned int outfmt_list[]={
  70 // YUV:
  71     IMGFMT_444P,
  72     IMGFMT_444P16_LE,
  73     IMGFMT_444P16_BE,
  74     IMGFMT_422P,
  75     IMGFMT_422P16_LE,
  76     IMGFMT_422P16_BE,
  77     IMGFMT_YV12,
  78     IMGFMT_I420,
  79     IMGFMT_420P16_LE,
  80     IMGFMT_420P16_BE,
  81     IMGFMT_420A,
  82     IMGFMT_IYUV,
  83     IMGFMT_YVU9,
  84     IMGFMT_IF09,
  85     IMGFMT_411P,
  86     IMGFMT_NV12,
  87     IMGFMT_NV21,
  88     IMGFMT_YUY2,
  89     IMGFMT_UYVY,
  90     IMGFMT_440P,
  91 // RGB and grayscale (Y8 and Y800):
  92     IMGFMT_BGR32,
  93     IMGFMT_RGB32,
  94     IMGFMT_BGR24,
  95     IMGFMT_RGB24,
  96     IMGFMT_RGB48LE,
  97     IMGFMT_RGB48BE,
  98     IMGFMT_BGR16,
  99     IMGFMT_RGB16,
 100     IMGFMT_BGR15,
 101     IMGFMT_RGB15,
 102     IMGFMT_Y800,
 103     IMGFMT_Y8,
 104     IMGFMT_BGR8,
 105     IMGFMT_RGB8,
 106     IMGFMT_BGR4,
 107     IMGFMT_RGB4,
 108     IMGFMT_BG4B,
 109     IMGFMT_RG4B,
 110     IMGFMT_BGR1,
 111     IMGFMT_RGB1,
 112     0
 113 };
 114
 115 /**
 116  * A list of preferred conversions, in order of preference.
 117  * This should be used for conversions that e.g. involve no scaling
 118  * or to stop vf_scale from choosing a conversion that has no
 119  * fast assembler implementation.
 120  */
 121 static int preferred_conversions[][2] = {
 122     {IMGFMT_YUY2, IMGFMT_UYVY},
 123     {IMGFMT_YUY2, IMGFMT_422P},
 124     {IMGFMT_UYVY, IMGFMT_YUY2},
 125     {IMGFMT_UYVY, IMGFMT_422P},
 126     {IMGFMT_422P, IMGFMT_YUY2},
 127     {IMGFMT_422P, IMGFMT_UYVY},
 128     {0, 0}
 129 };
 130
 131 static unsigned int find_best_out(vf_instance_t *vf, int in_format){
 132     unsigned int best=0;
 133     int i = -1;
 134     int j = -1;
 135     int format = 0;
 136
 137     // find the best outfmt:
 138     while (1) {
 139         int ret;
 140         if (j < 0) {
 141             format = in_format;
 142             j = 0;
 143         } else if (i < 0) {
 144             while (preferred_conversions[j][0] &&
 145                    preferred_conversions[j][0] != in_format)
 146                 j++;
 147             format = preferred_conversions[j++][1];
 148             // switch to standard list
 149             if (!format)
 150                 i = 0;
 151         }
 152         if (i >= 0)
 153             format = outfmt_list[i++];
 154         if (!format)
 155             break;
 156         ret = vf_next_query_format(vf, format);
 157
 158         mp_msg(MSGT_VFILTER,MSGL_DBG2,"scale: query(%s) -> %d\n",vo_format_name(format),ret&3);
 159         if(ret&VFCAP_CSP_SUPPORTED_BY_HW){
 160             best=format; // no conversion -> bingo!
 161             break;
 162         }
 163         if(ret&VFCAP_CSP_SUPPORTED && !best)
 164             best=format; // best with conversion
 165     }
 166     return best;
 167 }
 168
 169 static int config(struct vf_instance_s* vf,
 170         int width, int height, int d_width, int d_height,
 171         unsigned int flags, unsigned int outfmt){
 172     unsigned int best=find_best_out(vf, outfmt);
 173     int vo_flags;
 174     int int_sws_flags=0;
 175     int round_w=0, round_h=0;
 176     int i;
 177     SwsFilter *srcFilter, *dstFilter;
 178     enum PixelFormat dfmt, sfmt;
 179
 180     if(!best){
 181         mp_msg(MSGT_VFILTER,MSGL_WARN,"SwScale: no supported outfmt found :(\n");
 182         return 0;
 183     }
 184     sfmt = imgfmt2pixfmt(outfmt);
 185     if (outfmt == IMGFMT_RGB8 || outfmt == IMGFMT_BGR8) sfmt = PIX_FMT_PAL8;
 186     dfmt = imgfmt2pixfmt(best);
 187
 188     vo_flags=vf->next->query_format(vf->next,best);
 189
 190     // scaling to dwidth*d_height, if all these TRUE:
 191     // - option -zoom
 192     // - no other sw/hw up/down scaling avail.
 193     // - we're after postproc
 194     // - user didn't set w:h
 195     if(!(vo_flags&VFCAP_POSTPROC) && (flags&4) &&
 196             vf->priv->w<0 && vf->priv->h<0){    // -zoom
 197         int x=(vo_flags&VFCAP_SWSCALE) ? 0 : 1;
 198         if(d_width<width || d_height<height){
 199             // downscale!
 200             if(vo_flags&VFCAP_HWSCALE_DOWN) x=0;
 201         } else {
 202             // upscale:
 203             if(vo_flags&VFCAP_HWSCALE_UP) x=0;
 204         }
 205         if(x){
 206             // user wants sw scaling! (-zoom)
 207             vf->priv->w=d_width;
 208             vf->priv->h=d_height;
 209         }
 210     }
 211
 212     if(vf->priv->noup){
 213         if((vf->priv->w > width) + (vf->priv->h > height) >= vf->priv->noup){
 214             vf->priv->w= width;
 215             vf->priv->h= height;
 216         }
 217     }
 218
 219     if (vf->priv->w <= -8) {
 220       vf->priv->w += 8;
 221       round_w = 1;
 222     }
 223     if (vf->priv->h <= -8) {
 224       vf->priv->h += 8;
 225       round_h = 1;
 226     }
 227
 228     if (vf->priv->w < -3 || vf->priv->h < -3 ||
 229          (vf->priv->w < -1 && vf->priv->h < -1)) {
 230       // TODO: establish a direct connection to the user's brain
 231       // and find out what the heck he thinks MPlayer should do
 232       // with this nonsense.
 233       mp_msg(MSGT_VFILTER, MSGL_ERR, "SwScale: EUSERBROKEN Check your parameters, they make no sense!\n");
 234       return 0;
 235     }
 236
 237     if (vf->priv->w == -1)
 238       vf->priv->w = width;
 239     if (vf->priv->w == 0)
 240       vf->priv->w = d_width;
 241
 242     if (vf->priv->h == -1)
 243       vf->priv->h = height;
 244     if (vf->priv->h == 0)
 245       vf->priv->h = d_height;
 246
 247     if (vf->priv->w == -3)
 248       vf->priv->w = vf->priv->h * width / height;
 249     if (vf->priv->w == -2)
 250       vf->priv->w = vf->priv->h * d_width / d_height;
 251
 252     if (vf->priv->h == -3)
 253       vf->priv->h = vf->priv->w * height / width;
 254     if (vf->priv->h == -2)
 255       vf->priv->h = vf->priv->w * d_height / d_width;
 256
 257     if (round_w)
 258       vf->priv->w = ((vf->priv->w + 8) / 16) * 16;
 259     if (round_h)
 260       vf->priv->h = ((vf->priv->h + 8) / 16) * 16;
 261
 262     // calculate the missing parameters:
 263     switch(best) {
 264     case IMGFMT_YV12:           /* YV12 needs w & h rounded to 2 */
 265     case IMGFMT_I420:
 266     case IMGFMT_IYUV:
 267     case IMGFMT_NV12:
 268     case IMGFMT_NV21:
 269       vf->priv->h = (vf->priv->h + 1) & ~1;
 270     case IMGFMT_YUY2:           /* YUY2 needs w rounded to 2 */
 271     case IMGFMT_UYVY:
 272       vf->priv->w = (vf->priv->w + 1) & ~1;
 273     }
 274
 275     mp_msg(MSGT_VFILTER,MSGL_DBG2,"SwScale: scaling %dx%d %s to %dx%d %s  \n",
 276         width,height,vo_format_name(outfmt),
 277         vf->priv->w,vf->priv->h,vo_format_name(best));
 278
 279     // free old ctx:
 280     if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
 281     if(vf->priv->ctx2)sws_freeContext(vf->priv->ctx2);
 282
 283     // new swscaler:
 284     sws_getFlagsAndFilterFromCmdLine(&int_sws_flags, &srcFilter, &dstFilter);
 285     int_sws_flags|= vf->priv->v_chr_drop << SWS_SRC_V_CHR_DROP_SHIFT;
 286     int_sws_flags|= vf->priv->accurate_rnd * SWS_ACCURATE_RND;
 287     vf->priv->ctx=sws_getContext(width, height >> vf->priv->interlaced,
 288             sfmt,
 289                   vf->priv->w, vf->priv->h >> vf->priv->interlaced,
 290             dfmt,
 291             int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, vf->priv->param);
 292     if(vf->priv->interlaced){
 293         vf->priv->ctx2=sws_getContext(width, height >> 1,
 294             sfmt,
 295                   vf->priv->w, vf->priv->h >> 1,
 296             dfmt,
 297             int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, vf->priv->param);
 298     }
 299     if(!vf->priv->ctx){
 300         // error...
 301         mp_msg(MSGT_VFILTER,MSGL_WARN,"Couldn't init SwScaler for this setup\n");
 302         return 0;
 303     }
 304     vf->priv->fmt=best;
 305
 306     if(vf->priv->palette){
 307         free(vf->priv->palette);
 308         vf->priv->palette=NULL;
 309     }
 310     switch(best){
 311     case IMGFMT_RGB8: {
 312       /* set 332 palette for 8 bpp */
 313         vf->priv->palette=malloc(4*256);
 314         for(i=0; i<256; i++){
 315             vf->priv->palette[4*i+0]=4*(i>>6)*21;
 316             vf->priv->palette[4*i+1]=4*((i>>3)&7)*9;
 317             vf->priv->palette[4*i+2]=4*((i&7)&7)*9;
 318             vf->priv->palette[4*i+3]=0;
 319         }
 320         break; }
 321     case IMGFMT_BGR8: {
 322       /* set 332 palette for 8 bpp */
 323         vf->priv->palette=malloc(4*256);
 324         for(i=0; i<256; i++){
 325             vf->priv->palette[4*i+0]=4*(i&3)*21;
 326             vf->priv->palette[4*i+1]=4*((i>>2)&7)*9;
 327             vf->priv->palette[4*i+2]=4*((i>>5)&7)*9;
 328             vf->priv->palette[4*i+3]=0;
 329         }
 330         break; }
 331     case IMGFMT_BGR4:
 332     case IMGFMT_BG4B: {
 333         vf->priv->palette=malloc(4*16);
 334         for(i=0; i<16; i++){
 335             vf->priv->palette[4*i+0]=4*(i&1)*63;
 336             vf->priv->palette[4*i+1]=4*((i>>1)&3)*21;
 337             vf->priv->palette[4*i+2]=4*((i>>3)&1)*63;
 338             vf->priv->palette[4*i+3]=0;
 339         }
 340         break; }
 341     case IMGFMT_RGB4:
 342     case IMGFMT_RG4B: {
 343         vf->priv->palette=malloc(4*16);
 344         for(i=0; i<16; i++){
 345             vf->priv->palette[4*i+0]=4*(i>>3)*63;
 346             vf->priv->palette[4*i+1]=4*((i>>1)&3)*21;
 347             vf->priv->palette[4*i+2]=4*((i&1)&1)*63;
 348             vf->priv->palette[4*i+3]=0;
 349         }
 350         break; }
 351     }
 352
 353     if(!opt_screen_size_x && !opt_screen_size_y && !(screen_size_xy >= 0.001)){
 354         // Compute new d_width and d_height, preserving aspect
 355         // while ensuring that both are >= output size in pixels.
 356         if (vf->priv->h * d_width > vf->priv->w * d_height) {
 357                 d_width = vf->priv->h * d_width / d_height;
 358                 d_height = vf->priv->h;
 359         } else {
 360                 d_height = vf->priv->w * d_height / d_width;
 361                 d_width = vf->priv->w;
 362         }
 363         //d_width=d_width*vf->priv->w/width;
 364         //d_height=d_height*vf->priv->h/height;
 365     }
 366     return vf_next_config(vf,vf->priv->w,vf->priv->h,d_width,d_height,flags,best);
 367 }
 368
 369 static void start_slice(struct vf_instance_s* vf, mp_image_t *mpi){
 370 //    printf("start_slice called! flag=%d\n",mpi->flags&MP_IMGFLAG_DRAW_CALLBACK);
 371     if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)) return; // shouldn't happen
 372     // they want slices!!! allocate the buffer.
 373     mpi->priv=vf->dmpi=vf_get_image(vf->next,vf->priv->fmt,
 374 //      mpi->type, mpi->flags & (~MP_IMGFLAG_DRAW_CALLBACK),
 375         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 376         vf->priv->w, vf->priv->h);
 377 }
 378
 379 static void scale(struct SwsContext *sws1, struct SwsContext *sws2, uint8_t *src[MP_MAX_PLANES], int src_stride[MP_MAX_PLANES],
 380                   int y, int h,  uint8_t *dst[MP_MAX_PLANES], int dst_stride[MP_MAX_PLANES], int interlaced){
 381     uint8_t *src2[MP_MAX_PLANES]={src[0], src[1], src[2], src[3]};
 382 #if HAVE_BIGENDIAN
 383     uint32_t pal2[256];
 384     if (src[1] && !src[2]){
 385         int i;
 386         for(i=0; i<256; i++)
 387             pal2[i]= bswap_32(((uint32_t*)src[1])[i]);
 388         src2[1]= pal2;
 389     }
 390 #endif
 391
 392     if(interlaced){
 393         int i;
 394         uint8_t *dst2[MP_MAX_PLANES]={dst[0], dst[1], dst[2], dst[3]};
 395         int src_stride2[MP_MAX_PLANES]={2*src_stride[0], 2*src_stride[1], 2*src_stride[2], 2*src_stride[3]};
 396         int dst_stride2[MP_MAX_PLANES]={2*dst_stride[0], 2*dst_stride[1], 2*dst_stride[2], 2*dst_stride[3]};
 397
 398         sws_scale(sws1, src2, src_stride2, y>>1, h>>1, dst2, dst_stride2);
 399         for(i=0; i<MP_MAX_PLANES; i++){
 400             src2[i] += src_stride[i];
 401             dst2[i] += dst_stride[i];
 402         }
 403         sws_scale(sws2, src2, src_stride2, y>>1, h>>1, dst2, dst_stride2);
 404     }else{
 405         sws_scale(sws1, src2, src_stride, y, h, dst, dst_stride);
 406     }
 407 }
 408
 409 static void draw_slice(struct vf_instance_s* vf,
 410         unsigned char** src, int* stride, int w,int h, int x, int y){
 411     mp_image_t *dmpi=vf->dmpi;
 412     if(!dmpi){
 413         mp_msg(MSGT_VFILTER,MSGL_FATAL,"vf_scale: draw_slice() called with dmpi=NULL (no get_image?)\n");
 414         return;
 415     }
 416 //    printf("vf_scale::draw_slice() y=%d h=%d\n",y,h);
 417     scale(vf->priv->ctx, vf->priv->ctx2, src, stride, y, h, dmpi->planes, dmpi->stride, vf->priv->interlaced);
 418 }
 419
 420 static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
 421     mp_image_t *dmpi=mpi->priv;
 422
 423 //    printf("vf_scale::put_image(): processing whole frame! dmpi=%p flag=%d\n",
 424 //      dmpi, (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK));
 425
 426   if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK && dmpi)){
 427
 428     // hope we'll get DR buffer:
 429     dmpi=vf_get_image(vf->next,vf->priv->fmt,
 430         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 431         vf->priv->w, vf->priv->h);
 432
 433       scale(vf->priv->ctx, vf->priv->ctx, mpi->planes,mpi->stride,0,mpi->h,dmpi->planes,dmpi->stride, vf->priv->interlaced);
 434   }
 435
 436     if(vf->priv->w==mpi->w && vf->priv->h==mpi->h){
 437         // just conversion, no scaling -> keep postprocessing data
 438         // this way we can apply pp filter to non-yv12 source using scaler
 439         vf_clone_mpi_attributes(dmpi, mpi);
 440     }
 441
 442     if(vf->priv->palette) dmpi->planes[1]=vf->priv->palette; // export palette!
 443
 444     return vf_next_put_image(vf,dmpi, pts);
 445 }
 446
 447 static int control(struct vf_instance_s* vf, int request, void* data){
 448     int *table;
 449     int *inv_table;
 450     int r;
 451     int brightness, contrast, saturation, srcRange, dstRange;
 452     vf_equalizer_t *eq;
 453
 454   if(vf->priv->ctx)
 455     switch(request){
 456     case VFCTRL_GET_EQUALIZER:
 457         r= sws_getColorspaceDetails(vf->priv->ctx, &inv_table, &srcRange, &table, &dstRange, &brightness, &contrast, &saturation);
 458         if(r<0) break;
 459
 460         eq = data;
 461         if (!strcmp(eq->item,"brightness")) {
 462                 eq->value =  ((brightness*100) + (1<<15))>>16;
 463         }
 464         else if (!strcmp(eq->item,"contrast")) {
 465                 eq->value = (((contrast  *100) + (1<<15))>>16) - 100;
 466         }
 467         else if (!strcmp(eq->item,"saturation")) {
 468                 eq->value = (((saturation*100) + (1<<15))>>16) - 100;
 469         }
 470         else
 471                 break;
 472         return CONTROL_TRUE;
 473     case VFCTRL_SET_EQUALIZER:
 474         r= sws_getColorspaceDetails(vf->priv->ctx, &inv_table, &srcRange, &table, &dstRange, &brightness, &contrast, &saturation);
 475         if(r<0) break;
 476 //printf("set %f %f %f\n", brightness/(float)(1<<16), contrast/(float)(1<<16), saturation/(float)(1<<16));
 477         eq = data;
 478
 479         if (!strcmp(eq->item,"brightness")) {
 480                 brightness = (( eq->value     <<16) + 50)/100;
 481         }
 482         else if (!strcmp(eq->item,"contrast")) {
 483                 contrast   = (((eq->value+100)<<16) + 50)/100;
 484         }
 485         else if (!strcmp(eq->item,"saturation")) {
 486                 saturation = (((eq->value+100)<<16) + 50)/100;
 487         }
 488         else
 489                 break;
 490
 491         r= sws_setColorspaceDetails(vf->priv->ctx, inv_table, srcRange, table, dstRange, brightness, contrast, saturation);
 492         if(r<0) break;
 493         if(vf->priv->ctx2){
 494             r= sws_setColorspaceDetails(vf->priv->ctx2, inv_table, srcRange, table, dstRange, brightness, contrast, saturation);
 495             if(r<0) break;
 496         }
 497
 498         return CONTROL_TRUE;
 499     default:
 500         break;
 501     }
 502
 503     return vf_next_control(vf,request,data);
 504 }
 505
 506 //===========================================================================//
 507
 508 //  supported Input formats: YV12, I420, IYUV, YUY2, UYVY, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8, Y800
 509
 510 static int query_format(struct vf_instance_s* vf, unsigned int fmt){
 511     switch(fmt){
 512     case IMGFMT_YV12:
 513     case IMGFMT_I420:
 514     case IMGFMT_IYUV:
 515     case IMGFMT_UYVY:
 516     case IMGFMT_YUY2:
 517     case IMGFMT_BGR32:
 518     case IMGFMT_BGR24:
 519     case IMGFMT_BGR16:
 520     case IMGFMT_BGR15:
 521     case IMGFMT_RGB32:
 522     case IMGFMT_RGB24:
 523     case IMGFMT_Y800:
 524     case IMGFMT_Y8:
 525     case IMGFMT_YVU9:
 526     case IMGFMT_IF09:
 527     case IMGFMT_444P:
 528     case IMGFMT_422P:
 529     case IMGFMT_411P:
 530     case IMGFMT_440P:
 531     case IMGFMT_420A:
 532     case IMGFMT_444P16_LE:
 533     case IMGFMT_444P16_BE:
 534     case IMGFMT_422P16_LE:
 535     case IMGFMT_422P16_BE:
 536     case IMGFMT_420P16_LE:
 537     case IMGFMT_420P16_BE:
 538     case IMGFMT_BGR8:
 539     case IMGFMT_RGB8:
 540     case IMGFMT_BG4B:
 541     case IMGFMT_RG4B:
 542     case IMGFMT_RGB48LE:
 543     case IMGFMT_RGB48BE:
 544     {
 545         unsigned int best=find_best_out(vf, fmt);
 546         int flags;
 547         if(!best) return 0;      // no matching out-fmt
 548         flags=vf_next_query_format(vf,best);
 549         if(!(flags&(VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW))) return 0; // huh?
 550         if(fmt!=best) flags&=~VFCAP_CSP_SUPPORTED_BY_HW;
 551         // do not allow scaling, if we are before the PP fliter!
 552         if(!(flags&VFCAP_POSTPROC)) flags|=VFCAP_SWSCALE;
 553         return flags;
 554       }
 555     }
 556     return 0;   // nomatching in-fmt
 557 }
 558
 559 static void uninit(struct vf_instance_s *vf){
 560     if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
 561     if(vf->priv->ctx2) sws_freeContext(vf->priv->ctx2);
 562     if(vf->priv->palette) free(vf->priv->palette);
 563     free(vf->priv);
 564 }
 565
 566 static int open(vf_instance_t *vf, char* args){
 567     vf->config=config;
 568     vf->start_slice=start_slice;
 569     vf->draw_slice=draw_slice;
 570     vf->put_image=put_image;
 571     vf->query_format=query_format;
 572     vf->control= control;
 573     vf->uninit=uninit;
 574     mp_msg(MSGT_VFILTER,MSGL_V,"SwScale params: %d x %d (-1=no scaling)\n",
 575     vf->priv->w,
 576     vf->priv->h);
 577
 578     return 1;
 579 }
 580
 581 //global sws_flags from the command line
 582 int sws_flags=2;
 583
 584 //global srcFilter
 585 static SwsFilter *src_filter= NULL;
 586
 587 float sws_lum_gblur= 0.0;
 588 float sws_chr_gblur= 0.0;
 589 int sws_chr_vshift= 0;
 590 int sws_chr_hshift= 0;
 591 float sws_chr_sharpen= 0.0;
 592 float sws_lum_sharpen= 0.0;
 593
 594 int get_sws_cpuflags(void){
 595     return
 596           (gCpuCaps.hasMMX   ? SWS_CPU_CAPS_MMX   : 0)
 597         | (gCpuCaps.hasMMX2  ? SWS_CPU_CAPS_MMX2  : 0)
 598         | (gCpuCaps.has3DNow ? SWS_CPU_CAPS_3DNOW : 0)
 599         | (gCpuCaps.hasAltiVec ? SWS_CPU_CAPS_ALTIVEC : 0);
 600 }
 601
 602 void sws_getFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam)
 603 {
 604         static int firstTime=1;
 605         *flags=0;
 606
 607 #if ARCH_X86
 608         if(gCpuCaps.hasMMX)
 609                 __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
 610 #endif
 611         if(firstTime)
 612         {
 613                 firstTime=0;
 614                 *flags= SWS_PRINT_INFO;
 615         }
 616         else if( mp_msg_test(MSGT_VFILTER,MSGL_DBG2) ) *flags= SWS_PRINT_INFO;
 617
 618         if(src_filter) sws_freeFilter(src_filter);
 619
 620         src_filter= sws_getDefaultFilter(
 621                 sws_lum_gblur, sws_chr_gblur,
 622                 sws_lum_sharpen, sws_chr_sharpen,
 623                 sws_chr_hshift, sws_chr_vshift, verbose>1);
 624
 625         switch(sws_flags)
 626         {
 627                 case 0: *flags|= SWS_FAST_BILINEAR; break;
 628                 case 1: *flags|= SWS_BILINEAR; break;
 629                 case 2: *flags|= SWS_BICUBIC; break;
 630                 case 3: *flags|= SWS_X; break;
 631                 case 4: *flags|= SWS_POINT; break;
 632                 case 5: *flags|= SWS_AREA; break;
 633                 case 6: *flags|= SWS_BICUBLIN; break;
 634                 case 7: *flags|= SWS_GAUSS; break;
 635                 case 8: *flags|= SWS_SINC; break;
 636                 case 9: *flags|= SWS_LANCZOS; break;
 637                 case 10:*flags|= SWS_SPLINE; break;
 638                 default:*flags|= SWS_BILINEAR; break;
 639         }
 640
 641         *srcFilterParam= src_filter;
 642         *dstFilterParam= NULL;
 643 }
 644
 645 // will use sws_flags & src_filter (from cmd line)
 646 struct SwsContext *sws_getContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat)
 647 {
 648         int flags;
 649         SwsFilter *dstFilterParam, *srcFilterParam;
 650         enum PixelFormat dfmt, sfmt;
 651
 652         dfmt = imgfmt2pixfmt(dstFormat);
 653         sfmt = imgfmt2pixfmt(srcFormat);
 654         if (srcFormat == IMGFMT_RGB8 || srcFormat == IMGFMT_BGR8) sfmt = PIX_FMT_PAL8;
 655         sws_getFlagsAndFilterFromCmdLine(&flags, &srcFilterParam, &dstFilterParam);
 656
 657         return sws_getContext(srcW, srcH, sfmt, dstW, dstH, dfmt, flags | get_sws_cpuflags(), srcFilterParam, dstFilterParam, NULL);
 658 }
 659
 660 /// An example of presets usage
 661 static struct size_preset {
 662   char* name;
 663   int w, h;
 664 } vf_size_presets_defs[] = {
 665   // TODO add more 'standard' resolutions
 666   { "qntsc", 352, 240 },
 667   { "qpal", 352, 288 },
 668   { "ntsc", 720, 480 },
 669   { "pal", 720, 576 },
 670   { "sntsc", 640, 480 },
 671   { "spal", 768, 576 },
 672   { NULL, 0, 0}
 673 };
 674
 675 #define ST_OFF(f) M_ST_OFF(struct size_preset,f)
 676 static m_option_t vf_size_preset_fields[] = {
 677   {"w", ST_OFF(w), CONF_TYPE_INT, M_OPT_MIN,1 ,0, NULL},
 678   {"h", ST_OFF(h), CONF_TYPE_INT, M_OPT_MIN,1 ,0, NULL},
 679   { NULL, NULL, 0, 0, 0, 0,  NULL }
 680 };
 681
 682 static m_struct_t vf_size_preset = {
 683   "scale_size_preset",
 684   sizeof(struct size_preset),
 685   NULL,
 686   vf_size_preset_fields
 687 };
 688
 689 static m_struct_t vf_opts;
 690 static m_obj_presets_t size_preset = {
 691   &vf_size_preset, // Input struct desc
 692   &vf_opts, // Output struct desc
 693   vf_size_presets_defs, // The list of presets
 694   ST_OFF(name) // At wich offset is the name field in the preset struct
 695 };
 696
 697 /// Now the options
 698 #undef ST_OFF
 699 #define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
 700 static m_option_t vf_opts_fields[] = {
 701   {"w", ST_OFF(w), CONF_TYPE_INT, M_OPT_MIN,-11,0, NULL},
 702   {"h", ST_OFF(h), CONF_TYPE_INT, M_OPT_MIN,-11,0, NULL},
 703   {"interlaced", ST_OFF(interlaced), CONF_TYPE_INT, M_OPT_RANGE, 0, 1, NULL},
 704   {"chr-drop", ST_OFF(v_chr_drop), CONF_TYPE_INT, M_OPT_RANGE, 0, 3, NULL},
 705   {"param" , ST_OFF(param[0]), CONF_TYPE_DOUBLE, M_OPT_RANGE, 0.0, 100.0, NULL},
 706   {"param2", ST_OFF(param[1]), CONF_TYPE_DOUBLE, M_OPT_RANGE, 0.0, 100.0, NULL},
 707   // Note that here the 2 field is NULL (ie 0)
 708   // As we want this option to act on the option struct itself
 709   {"presize", 0, CONF_TYPE_OBJ_PRESETS, 0, 0, 0, &size_preset},
 710   {"noup", ST_OFF(noup), CONF_TYPE_INT, M_OPT_RANGE, 0, 2, NULL},
 711   {"arnd", ST_OFF(accurate_rnd), CONF_TYPE_FLAG, 0, 0, 1, NULL},
 712   { NULL, NULL, 0, 0, 0, 0,  NULL }
 713 };
 714
 715 static m_struct_t vf_opts = {
 716   "scale",
 717   sizeof(struct vf_priv_s),
 718   &vf_priv_dflt,
 719   vf_opts_fields
 720 };
 721
 722 const vf_info_t vf_info_scale = {
 723     "software scaling",
 724     "scale",
 725     "A'rpi",
 726     "",
 727     open,
 728     &vf_opts
 729 };
 730
 731 //===========================================================================//