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 #include "options.h"
  28
  29 #include "img_format.h"
  30 #include "mp_image.h"
  31 #include "vf.h"
  32 #include "fmt-conversion.h"
  33 #include "mpbswap.h"
  34
  35 #include "libswscale/swscale.h"
  36 #include "vf_scale.h"
  37
  38 #include "m_option.h"
  39 #include "m_struct.h"
  40
  41 static struct vf_priv_s {
  42     int w,h;
  43     int v_chr_drop;
  44     double param[2];
  45     unsigned int fmt;
  46     struct SwsContext *ctx;
  47     struct SwsContext *ctx2; //for interlaced slices only
  48     unsigned char* palette;
  49     int interlaced;
  50     int noup;
  51     int accurate_rnd;
  52 } const vf_priv_dflt = {
  53   -1,-1,
  54   0,
  55   {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT},
  56   0,
  57   NULL,
  58   NULL,
  59   NULL
  60 };
  61
  62 //===========================================================================//
  63
  64 void sws_getFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam);
  65
  66 static const unsigned int outfmt_list[]={
  67 // YUV:
  68     IMGFMT_444P,
  69     IMGFMT_444P16_LE,
  70     IMGFMT_444P16_BE,
  71     IMGFMT_444P10_LE,
  72     IMGFMT_444P10_BE,
  73     IMGFMT_444P9_LE,
  74     IMGFMT_444P9_BE,
  75     IMGFMT_422P,
  76     IMGFMT_422P16_LE,
  77     IMGFMT_422P16_BE,
  78     IMGFMT_422P10_LE,
  79     IMGFMT_422P10_BE,
  80     IMGFMT_YV12,
  81     IMGFMT_I420,
  82     IMGFMT_420P16_LE,
  83     IMGFMT_420P16_BE,
  84     IMGFMT_420P10_LE,
  85     IMGFMT_420P10_BE,
  86     IMGFMT_420P9_LE,
  87     IMGFMT_420P9_BE,
  88     IMGFMT_420A,
  89     IMGFMT_IYUV,
  90     IMGFMT_YVU9,
  91     IMGFMT_IF09,
  92     IMGFMT_411P,
  93     IMGFMT_NV12,
  94     IMGFMT_NV21,
  95     IMGFMT_YUY2,
  96     IMGFMT_UYVY,
  97     IMGFMT_440P,
  98 // RGB and grayscale (Y8 and Y800):
  99     IMGFMT_BGR32,
 100     IMGFMT_RGB32,
 101     IMGFMT_BGR24,
 102     IMGFMT_RGB24,
 103     IMGFMT_RGB48LE,
 104     IMGFMT_RGB48BE,
 105     IMGFMT_BGR16,
 106     IMGFMT_RGB16,
 107     IMGFMT_BGR15,
 108     IMGFMT_RGB15,
 109     IMGFMT_BGR12,
 110     IMGFMT_RGB12,
 111     IMGFMT_Y800,
 112     IMGFMT_Y8,
 113     IMGFMT_BGR8,
 114     IMGFMT_RGB8,
 115     IMGFMT_BGR4,
 116     IMGFMT_RGB4,
 117     IMGFMT_BG4B,
 118     IMGFMT_RG4B,
 119     IMGFMT_BGR1,
 120     IMGFMT_RGB1,
 121     0
 122 };
 123
 124 /**
 125  * A list of preferred conversions, in order of preference.
 126  * This should be used for conversions that e.g. involve no scaling
 127  * or to stop vf_scale from choosing a conversion that has no
 128  * fast assembler implementation.
 129  */
 130 static int preferred_conversions[][2] = {
 131     {IMGFMT_YUY2, IMGFMT_UYVY},
 132     {IMGFMT_YUY2, IMGFMT_422P},
 133     {IMGFMT_UYVY, IMGFMT_YUY2},
 134     {IMGFMT_UYVY, IMGFMT_422P},
 135     {IMGFMT_422P, IMGFMT_YUY2},
 136     {IMGFMT_422P, IMGFMT_UYVY},
 137     {0, 0}
 138 };
 139
 140 static unsigned int find_best_out(vf_instance_t *vf, int in_format){
 141     unsigned int best=0;
 142     int i = -1;
 143     int j = -1;
 144     int format = 0;
 145
 146     // find the best outfmt:
 147     while (1) {
 148         int ret;
 149         if (j < 0) {
 150             format = in_format;
 151             j = 0;
 152         } else if (i < 0) {
 153             while (preferred_conversions[j][0] &&
 154                    preferred_conversions[j][0] != in_format)
 155                 j++;
 156             format = preferred_conversions[j++][1];
 157             // switch to standard list
 158             if (!format)
 159                 i = 0;
 160         }
 161         if (i >= 0)
 162             format = outfmt_list[i++];
 163         if (!format)
 164             break;
 165         ret = vf_next_query_format(vf, format);
 166
 167         mp_msg(MSGT_VFILTER,MSGL_DBG2,"scale: query(%s) -> %d\n",vo_format_name(format),ret&3);
 168         if(ret&VFCAP_CSP_SUPPORTED_BY_HW){
 169             best=format; // no conversion -> bingo!
 170             break;
 171         }
 172         if(ret&VFCAP_CSP_SUPPORTED && !best)
 173             best=format; // best with conversion
 174     }
 175     return best;
 176 }
 177
 178 static int config(struct vf_instance *vf,
 179         int width, int height, int d_width, int d_height,
 180         unsigned int flags, unsigned int outfmt){
 181     struct MPOpts *opts = vf->opts;
 182     unsigned int best=find_best_out(vf, outfmt);
 183     int vo_flags;
 184     int int_sws_flags=0;
 185     int round_w=0, round_h=0;
 186     int i;
 187     SwsFilter *srcFilter, *dstFilter;
 188     enum PixelFormat dfmt, sfmt;
 189
 190     if(!best){
 191         mp_msg(MSGT_VFILTER,MSGL_WARN,"SwScale: no supported outfmt found :(\n");
 192         return 0;
 193     }
 194     sfmt = imgfmt2pixfmt(outfmt);
 195     if (outfmt == IMGFMT_RGB8 || outfmt == IMGFMT_BGR8) sfmt = PIX_FMT_PAL8;
 196     dfmt = imgfmt2pixfmt(best);
 197
 198     vo_flags=vf->next->query_format(vf->next,best);
 199
 200     // scaling to dwidth*d_height, if all these TRUE:
 201     // - option -zoom
 202     // - no other sw/hw up/down scaling avail.
 203     // - we're after postproc
 204     // - user didn't set w:h
 205     if(!(vo_flags&VFCAP_POSTPROC) && (flags&4) &&
 206             vf->priv->w<0 && vf->priv->h<0){    // -zoom
 207         int x=(vo_flags&VFCAP_SWSCALE) ? 0 : 1;
 208         if(d_width<width || d_height<height){
 209             // downscale!
 210             if(vo_flags&VFCAP_HWSCALE_DOWN) x=0;
 211         } else {
 212             // upscale:
 213             if(vo_flags&VFCAP_HWSCALE_UP) x=0;
 214         }
 215         if(x){
 216             // user wants sw scaling! (-zoom)
 217             vf->priv->w=d_width;
 218             vf->priv->h=d_height;
 219         }
 220     }
 221
 222     if(vf->priv->noup){
 223         if((vf->priv->w > width) + (vf->priv->h > height) >= vf->priv->noup){
 224             vf->priv->w= width;
 225             vf->priv->h= height;
 226         }
 227     }
 228
 229     if (vf->priv->w <= -8) {
 230       vf->priv->w += 8;
 231       round_w = 1;
 232     }
 233     if (vf->priv->h <= -8) {
 234       vf->priv->h += 8;
 235       round_h = 1;
 236     }
 237
 238     if (vf->priv->w < -3 || vf->priv->h < -3 ||
 239          (vf->priv->w < -1 && vf->priv->h < -1)) {
 240       // TODO: establish a direct connection to the user's brain
 241       // and find out what the heck he thinks MPlayer should do
 242       // with this nonsense.
 243       mp_msg(MSGT_VFILTER, MSGL_ERR, "SwScale: EUSERBROKEN Check your parameters, they make no sense!\n");
 244       return 0;
 245     }
 246
 247     if (vf->priv->w == -1)
 248       vf->priv->w = width;
 249     if (vf->priv->w == 0)
 250       vf->priv->w = d_width;
 251
 252     if (vf->priv->h == -1)
 253       vf->priv->h = height;
 254     if (vf->priv->h == 0)
 255       vf->priv->h = d_height;
 256
 257     if (vf->priv->w == -3)
 258       vf->priv->w = vf->priv->h * width / height;
 259     if (vf->priv->w == -2)
 260       vf->priv->w = vf->priv->h * d_width / d_height;
 261
 262     if (vf->priv->h == -3)
 263       vf->priv->h = vf->priv->w * height / width;
 264     if (vf->priv->h == -2)
 265       vf->priv->h = vf->priv->w * d_height / d_width;
 266
 267     if (round_w)
 268       vf->priv->w = ((vf->priv->w + 8) / 16) * 16;
 269     if (round_h)
 270       vf->priv->h = ((vf->priv->h + 8) / 16) * 16;
 271
 272     // calculate the missing parameters:
 273     switch(best) {
 274     case IMGFMT_YV12:           /* YV12 needs w & h rounded to 2 */
 275     case IMGFMT_I420:
 276     case IMGFMT_IYUV:
 277     case IMGFMT_NV12:
 278     case IMGFMT_NV21:
 279       vf->priv->h = (vf->priv->h + 1) & ~1;
 280     case IMGFMT_YUY2:           /* YUY2 needs w rounded to 2 */
 281     case IMGFMT_UYVY:
 282       vf->priv->w = (vf->priv->w + 1) & ~1;
 283     }
 284
 285     mp_msg(MSGT_VFILTER,MSGL_DBG2,"SwScale: scaling %dx%d %s to %dx%d %s  \n",
 286         width,height,vo_format_name(outfmt),
 287         vf->priv->w,vf->priv->h,vo_format_name(best));
 288
 289     // free old ctx:
 290     if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
 291     if(vf->priv->ctx2)sws_freeContext(vf->priv->ctx2);
 292
 293     // new swscaler:
 294     sws_getFlagsAndFilterFromCmdLine(&int_sws_flags, &srcFilter, &dstFilter);
 295     int_sws_flags|= vf->priv->v_chr_drop << SWS_SRC_V_CHR_DROP_SHIFT;
 296     int_sws_flags|= vf->priv->accurate_rnd * SWS_ACCURATE_RND;
 297     vf->priv->ctx=sws_getContext(width, height >> vf->priv->interlaced,
 298             sfmt,
 299                   vf->priv->w, vf->priv->h >> vf->priv->interlaced,
 300             dfmt,
 301             int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, vf->priv->param);
 302     if(vf->priv->interlaced){
 303         vf->priv->ctx2=sws_getContext(width, height >> 1,
 304             sfmt,
 305                   vf->priv->w, vf->priv->h >> 1,
 306             dfmt,
 307             int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, vf->priv->param);
 308     }
 309     if(!vf->priv->ctx){
 310         // error...
 311         mp_msg(MSGT_VFILTER,MSGL_WARN,"Couldn't init SwScaler for this setup\n");
 312         return 0;
 313     }
 314     vf->priv->fmt=best;
 315
 316     free(vf->priv->palette);
 317     vf->priv->palette=NULL;
 318     switch(best){
 319     case IMGFMT_RGB8: {
 320       /* set 332 palette for 8 bpp */
 321         vf->priv->palette=malloc(4*256);
 322         for(i=0; i<256; i++){
 323             vf->priv->palette[4*i+0]=4*(i>>6)*21;
 324             vf->priv->palette[4*i+1]=4*((i>>3)&7)*9;
 325             vf->priv->palette[4*i+2]=4*((i&7)&7)*9;
 326             vf->priv->palette[4*i+3]=0;
 327         }
 328         break; }
 329     case IMGFMT_BGR8: {
 330       /* set 332 palette for 8 bpp */
 331         vf->priv->palette=malloc(4*256);
 332         for(i=0; i<256; i++){
 333             vf->priv->palette[4*i+0]=4*(i&3)*21;
 334             vf->priv->palette[4*i+1]=4*((i>>2)&7)*9;
 335             vf->priv->palette[4*i+2]=4*((i>>5)&7)*9;
 336             vf->priv->palette[4*i+3]=0;
 337         }
 338         break; }
 339     case IMGFMT_BGR4:
 340     case IMGFMT_BG4B: {
 341         vf->priv->palette=malloc(4*16);
 342         for(i=0; i<16; i++){
 343             vf->priv->palette[4*i+0]=4*(i&1)*63;
 344             vf->priv->palette[4*i+1]=4*((i>>1)&3)*21;
 345             vf->priv->palette[4*i+2]=4*((i>>3)&1)*63;
 346             vf->priv->palette[4*i+3]=0;
 347         }
 348         break; }
 349     case IMGFMT_RGB4:
 350     case IMGFMT_RG4B: {
 351         vf->priv->palette=malloc(4*16);
 352         for(i=0; i<16; i++){
 353             vf->priv->palette[4*i+0]=4*(i>>3)*63;
 354             vf->priv->palette[4*i+1]=4*((i>>1)&3)*21;
 355             vf->priv->palette[4*i+2]=4*((i&1)&1)*63;
 356             vf->priv->palette[4*i+3]=0;
 357         }
 358         break; }
 359     }
 360
 361     if (!opts->screen_size_x && !opts->screen_size_y
 362         && !(opts->screen_size_xy >= 0.001)) {
 363         // Compute new d_width and d_height, preserving aspect
 364         // while ensuring that both are >= output size in pixels.
 365         if (vf->priv->h * d_width > vf->priv->w * d_height) {
 366                 d_width = vf->priv->h * d_width / d_height;
 367                 d_height = vf->priv->h;
 368         } else {
 369                 d_height = vf->priv->w * d_height / d_width;
 370                 d_width = vf->priv->w;
 371         }
 372         //d_width=d_width*vf->priv->w/width;
 373         //d_height=d_height*vf->priv->h/height;
 374     }
 375     return vf_next_config(vf,vf->priv->w,vf->priv->h,d_width,d_height,flags,best);
 376 }
 377
 378 static void start_slice(struct vf_instance *vf, mp_image_t *mpi){
 379 //    printf("start_slice called! flag=%d\n",mpi->flags&MP_IMGFLAG_DRAW_CALLBACK);
 380     if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)) return; // shouldn't happen
 381     // they want slices!!! allocate the buffer.
 382     mpi->priv=vf->dmpi=vf_get_image(vf->next,vf->priv->fmt,
 383 //      mpi->type, mpi->flags & (~MP_IMGFLAG_DRAW_CALLBACK),
 384         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 385         vf->priv->w, vf->priv->h);
 386 }
 387
 388 static void scale(struct SwsContext *sws1, struct SwsContext *sws2, uint8_t *src[MP_MAX_PLANES], int src_stride[MP_MAX_PLANES],
 389                   int y, int h,  uint8_t *dst[MP_MAX_PLANES], int dst_stride[MP_MAX_PLANES], int interlaced){
 390     const uint8_t *src2[MP_MAX_PLANES]={src[0], src[1], src[2], src[3]};
 391 #if HAVE_BIGENDIAN
 392     uint32_t pal2[256];
 393     if (src[1] && !src[2]){
 394         int i;
 395         for(i=0; i<256; i++)
 396             pal2[i]= bswap_32(((uint32_t*)src[1])[i]);
 397         src2[1]= pal2;
 398     }
 399 #endif
 400
 401     if(interlaced){
 402         int i;
 403         uint8_t *dst2[MP_MAX_PLANES]={dst[0], dst[1], dst[2], dst[3]};
 404         int src_stride2[MP_MAX_PLANES]={2*src_stride[0], 2*src_stride[1], 2*src_stride[2], 2*src_stride[3]};
 405         int dst_stride2[MP_MAX_PLANES]={2*dst_stride[0], 2*dst_stride[1], 2*dst_stride[2], 2*dst_stride[3]};
 406
 407         sws_scale(sws1, src2, src_stride2, y>>1, h>>1, dst2, dst_stride2);
 408         for(i=0; i<MP_MAX_PLANES; i++){
 409             src2[i] += src_stride[i];
 410             dst2[i] += dst_stride[i];
 411         }
 412         sws_scale(sws2, src2, src_stride2, y>>1, h>>1, dst2, dst_stride2);
 413     }else{
 414         sws_scale(sws1, src2, src_stride, y, h, dst, dst_stride);
 415     }
 416 }
 417
 418 static void draw_slice(struct vf_instance *vf,
 419         unsigned char** src, int* stride, int w,int h, int x, int y){
 420     mp_image_t *dmpi=vf->dmpi;
 421     if(!dmpi){
 422         mp_msg(MSGT_VFILTER,MSGL_FATAL,"vf_scale: draw_slice() called with dmpi=NULL (no get_image?)\n");
 423         return;
 424     }
 425 //    printf("vf_scale::draw_slice() y=%d h=%d\n",y,h);
 426     scale(vf->priv->ctx, vf->priv->ctx2, src, stride, y, h, dmpi->planes, dmpi->stride, vf->priv->interlaced);
 427 }
 428
 429 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
 430     mp_image_t *dmpi=mpi->priv;
 431
 432 //    printf("vf_scale::put_image(): processing whole frame! dmpi=%p flag=%d\n",
 433 //      dmpi, (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK));
 434
 435   if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK && dmpi)){
 436
 437     // hope we'll get DR buffer:
 438     dmpi=vf_get_image(vf->next,vf->priv->fmt,
 439         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 440         vf->priv->w, vf->priv->h);
 441
 442       scale(vf->priv->ctx, vf->priv->ctx, mpi->planes,mpi->stride,0,mpi->h,dmpi->planes,dmpi->stride, vf->priv->interlaced);
 443   }
 444
 445     if(vf->priv->w==mpi->w && vf->priv->h==mpi->h){
 446         // just conversion, no scaling -> keep postprocessing data
 447         // this way we can apply pp filter to non-yv12 source using scaler
 448         vf_clone_mpi_attributes(dmpi, mpi);
 449     }
 450
 451     if(vf->priv->palette) dmpi->planes[1]=vf->priv->palette; // export palette!
 452
 453     return vf_next_put_image(vf,dmpi, pts);
 454 }
 455
 456 static int control(struct vf_instance *vf, int request, void* data){
 457     int *table;
 458     int *inv_table;
 459     int r;
 460     int brightness, contrast, saturation, srcRange, dstRange;
 461     vf_equalizer_t *eq;
 462
 463   if(vf->priv->ctx)
 464     switch(request){
 465     case VFCTRL_GET_EQUALIZER:
 466         r= sws_getColorspaceDetails(vf->priv->ctx, &inv_table, &srcRange, &table, &dstRange, &brightness, &contrast, &saturation);
 467         if(r<0) break;
 468
 469         eq = data;
 470         if (!strcmp(eq->item,"brightness")) {
 471                 eq->value =  ((brightness*100) + (1<<15))>>16;
 472         }
 473         else if (!strcmp(eq->item,"contrast")) {
 474                 eq->value = (((contrast  *100) + (1<<15))>>16) - 100;
 475         }
 476         else if (!strcmp(eq->item,"saturation")) {
 477                 eq->value = (((saturation*100) + (1<<15))>>16) - 100;
 478         }
 479         else
 480                 break;
 481         return CONTROL_TRUE;
 482     case VFCTRL_SET_EQUALIZER:
 483         r= sws_getColorspaceDetails(vf->priv->ctx, &inv_table, &srcRange, &table, &dstRange, &brightness, &contrast, &saturation);
 484         if(r<0) break;
 485 //printf("set %f %f %f\n", brightness/(float)(1<<16), contrast/(float)(1<<16), saturation/(float)(1<<16));
 486         eq = data;
 487
 488         if (!strcmp(eq->item,"brightness")) {
 489                 brightness = (( eq->value     <<16) + 50)/100;
 490         }
 491         else if (!strcmp(eq->item,"contrast")) {
 492                 contrast   = (((eq->value+100)<<16) + 50)/100;
 493         }
 494         else if (!strcmp(eq->item,"saturation")) {
 495                 saturation = (((eq->value+100)<<16) + 50)/100;
 496         }
 497         else
 498                 break;
 499
 500         r= sws_setColorspaceDetails(vf->priv->ctx, inv_table, srcRange, table, dstRange, brightness, contrast, saturation);
 501         if(r<0) break;
 502         if(vf->priv->ctx2){
 503             r= sws_setColorspaceDetails(vf->priv->ctx2, inv_table, srcRange, table, dstRange, brightness, contrast, saturation);
 504             if(r<0) break;
 505         }
 506
 507         return CONTROL_TRUE;
 508     default:
 509         break;
 510     }
 511
 512     return vf_next_control(vf,request,data);
 513 }
 514
 515 //===========================================================================//
 516
 517 //  supported Input formats: YV12, I420, IYUV, YUY2, UYVY, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8, Y800
 518
 519 static int query_format(struct vf_instance *vf, unsigned int fmt){
 520     if (!IMGFMT_IS_HWACCEL(fmt) && imgfmt2pixfmt(fmt) != PIX_FMT_NONE) {
 521         unsigned int best=find_best_out(vf, fmt);
 522         int flags;
 523         if(!best) return 0;      // no matching out-fmt
 524         flags=vf_next_query_format(vf,best);
 525         if(!(flags&(VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW))) return 0; // huh?
 526         if(fmt!=best) flags&=~VFCAP_CSP_SUPPORTED_BY_HW;
 527         // do not allow scaling, if we are before the PP fliter!
 528         if(!(flags&VFCAP_POSTPROC)) flags|=VFCAP_SWSCALE;
 529         return flags;
 530     }
 531     return 0;   // nomatching in-fmt
 532 }
 533
 534 static void uninit(struct vf_instance *vf){
 535     if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
 536     if(vf->priv->ctx2) sws_freeContext(vf->priv->ctx2);
 537     free(vf->priv->palette);
 538     free(vf->priv);
 539 }
 540
 541 static int vf_open(vf_instance_t *vf, char *args){
 542     vf->config=config;
 543     vf->start_slice=start_slice;
 544     vf->draw_slice=draw_slice;
 545     vf->put_image=put_image;
 546     vf->query_format=query_format;
 547     vf->control= control;
 548     vf->uninit=uninit;
 549     mp_msg(MSGT_VFILTER,MSGL_V,"SwScale params: %d x %d (-1=no scaling)\n",
 550     vf->priv->w,
 551     vf->priv->h);
 552
 553     return 1;
 554 }
 555
 556 //global sws_flags from the command line
 557 int sws_flags=2;
 558
 559 //global srcFilter
 560 static SwsFilter *src_filter= NULL;
 561
 562 float sws_lum_gblur= 0.0;
 563 float sws_chr_gblur= 0.0;
 564 int sws_chr_vshift= 0;
 565 int sws_chr_hshift= 0;
 566 float sws_chr_sharpen= 0.0;
 567 float sws_lum_sharpen= 0.0;
 568
 569 int get_sws_cpuflags(void){
 570     return
 571           (gCpuCaps.hasMMX   ? SWS_CPU_CAPS_MMX   : 0)
 572         | (gCpuCaps.hasMMX2  ? SWS_CPU_CAPS_MMX2  : 0)
 573         | (gCpuCaps.has3DNow ? SWS_CPU_CAPS_3DNOW : 0)
 574         | (gCpuCaps.hasAltiVec ? SWS_CPU_CAPS_ALTIVEC : 0);
 575 }
 576
 577 void sws_getFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam)
 578 {
 579         static int firstTime=1;
 580         *flags=0;
 581
 582 #if ARCH_X86
 583         if(gCpuCaps.hasMMX)
 584                 __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
 585 #endif
 586         if(firstTime)
 587         {
 588                 firstTime=0;
 589                 *flags= SWS_PRINT_INFO;
 590         }
 591         else if( mp_msg_test(MSGT_VFILTER,MSGL_DBG2) ) *flags= SWS_PRINT_INFO;
 592
 593         if(src_filter) sws_freeFilter(src_filter);
 594
 595         src_filter= sws_getDefaultFilter(
 596                 sws_lum_gblur, sws_chr_gblur,
 597                 sws_lum_sharpen, sws_chr_sharpen,
 598                 sws_chr_hshift, sws_chr_vshift, verbose>1);
 599
 600         switch(sws_flags)
 601         {
 602                 case 0: *flags|= SWS_FAST_BILINEAR; break;
 603                 case 1: *flags|= SWS_BILINEAR; break;
 604                 case 2: *flags|= SWS_BICUBIC; break;
 605                 case 3: *flags|= SWS_X; break;
 606                 case 4: *flags|= SWS_POINT; break;
 607                 case 5: *flags|= SWS_AREA; break;
 608                 case 6: *flags|= SWS_BICUBLIN; break;
 609                 case 7: *flags|= SWS_GAUSS; break;
 610                 case 8: *flags|= SWS_SINC; break;
 611                 case 9: *flags|= SWS_LANCZOS; break;
 612                 case 10:*flags|= SWS_SPLINE; break;
 613                 default:*flags|= SWS_BILINEAR; break;
 614         }
 615
 616         *srcFilterParam= src_filter;
 617         *dstFilterParam= NULL;
 618 }
 619
 620 // will use sws_flags & src_filter (from cmd line)
 621 struct SwsContext *sws_getContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat)
 622 {
 623         int flags;
 624         SwsFilter *dstFilterParam, *srcFilterParam;
 625         enum PixelFormat dfmt, sfmt;
 626
 627         dfmt = imgfmt2pixfmt(dstFormat);
 628         sfmt = imgfmt2pixfmt(srcFormat);
 629         if (srcFormat == IMGFMT_RGB8 || srcFormat == IMGFMT_BGR8) sfmt = PIX_FMT_PAL8;
 630         sws_getFlagsAndFilterFromCmdLine(&flags, &srcFilterParam, &dstFilterParam);
 631
 632         return sws_getContext(srcW, srcH, sfmt, dstW, dstH, dfmt, flags | get_sws_cpuflags(), srcFilterParam, dstFilterParam, NULL);
 633 }
 634
 635 /// An example of presets usage
 636 static const struct size_preset {
 637   char* name;
 638   int w, h;
 639 } vf_size_presets_defs[] = {
 640   // TODO add more 'standard' resolutions
 641   { "qntsc", 352, 240 },
 642   { "qpal", 352, 288 },
 643   { "ntsc", 720, 480 },
 644   { "pal", 720, 576 },
 645   { "sntsc", 640, 480 },
 646   { "spal", 768, 576 },
 647   { NULL, 0, 0}
 648 };
 649
 650 #define ST_OFF(f) M_ST_OFF(struct size_preset,f)
 651 static const m_option_t vf_size_preset_fields[] = {
 652   {"w", ST_OFF(w), CONF_TYPE_INT, M_OPT_MIN,1 ,0, NULL},
 653   {"h", ST_OFF(h), CONF_TYPE_INT, M_OPT_MIN,1 ,0, NULL},
 654   { NULL, NULL, 0, 0, 0, 0,  NULL }
 655 };
 656
 657 static const m_struct_t vf_size_preset = {
 658   "scale_size_preset",
 659   sizeof(struct size_preset),
 660   NULL,
 661   vf_size_preset_fields
 662 };
 663
 664 static const m_struct_t vf_opts;
 665 static const m_obj_presets_t size_preset = {
 666   &vf_size_preset, // Input struct desc
 667   &vf_opts, // Output struct desc
 668   vf_size_presets_defs, // The list of presets
 669   ST_OFF(name) // At wich offset is the name field in the preset struct
 670 };
 671
 672 /// Now the options
 673 #undef ST_OFF
 674 #define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
 675 static const m_option_t vf_opts_fields[] = {
 676   {"w", ST_OFF(w), CONF_TYPE_INT, M_OPT_MIN,-11,0, NULL},
 677   {"h", ST_OFF(h), CONF_TYPE_INT, M_OPT_MIN,-11,0, NULL},
 678   {"interlaced", ST_OFF(interlaced), CONF_TYPE_INT, M_OPT_RANGE, 0, 1, NULL},
 679   {"chr-drop", ST_OFF(v_chr_drop), CONF_TYPE_INT, M_OPT_RANGE, 0, 3, NULL},
 680   {"param" , ST_OFF(param[0]), CONF_TYPE_DOUBLE, M_OPT_RANGE, 0.0, 100.0, NULL},
 681   {"param2", ST_OFF(param[1]), CONF_TYPE_DOUBLE, M_OPT_RANGE, 0.0, 100.0, NULL},
 682   // Note that here the 2 field is NULL (ie 0)
 683   // As we want this option to act on the option struct itself
 684   {"presize", 0, CONF_TYPE_OBJ_PRESETS, 0, 0, 0, (void *)&size_preset},
 685   {"noup", ST_OFF(noup), CONF_TYPE_INT, M_OPT_RANGE, 0, 2, NULL},
 686   {"arnd", ST_OFF(accurate_rnd), CONF_TYPE_FLAG, 0, 0, 1, NULL},
 687   { NULL, NULL, 0, 0, 0, 0,  NULL }
 688 };
 689
 690 static const m_struct_t vf_opts = {
 691   "scale",
 692   sizeof(struct vf_priv_s),
 693   &vf_priv_dflt,
 694   vf_opts_fields
 695 };
 696
 697 const vf_info_t vf_info_scale = {
 698     "software scaling",
 699     "scale",
 700     "A'rpi",
 701     "",
 702     vf_open,
 703     &vf_opts
 704 };
 705
 706 //===========================================================================//