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 #include <assert.h>
  23
  24 #include "config.h"
  25
  26 #include "mp_msg.h"
  27 #include "m_option.h"
  28 #include "m_struct.h"
  29
  30
  31 #include "img_format.h"
  32 #include "mp_image.h"
  33 #include "vf.h"
  34
  35 #include "libvo/fastmemcpy.h"
  36 #include "libavutil/mem.h"
  37
  38 extern const vf_info_t vf_info_vo;
  39 extern const vf_info_t vf_info_rectangle;
  40 extern const vf_info_t vf_info_bmovl;
  41 extern const vf_info_t vf_info_crop;
  42 extern const vf_info_t vf_info_expand;
  43 extern const vf_info_t vf_info_pp;
  44 extern const vf_info_t vf_info_scale;
  45 extern const vf_info_t vf_info_format;
  46 extern const vf_info_t vf_info_noformat;
  47 extern const vf_info_t vf_info_flip;
  48 extern const vf_info_t vf_info_rotate;
  49 extern const vf_info_t vf_info_mirror;
  50 extern const vf_info_t vf_info_palette;
  51 extern const vf_info_t vf_info_lavc;
  52 extern const vf_info_t vf_info_dvbscale;
  53 extern const vf_info_t vf_info_cropdetect;
  54 extern const vf_info_t vf_info_test;
  55 extern const vf_info_t vf_info_noise;
  56 extern const vf_info_t vf_info_yvu9;
  57 extern const vf_info_t vf_info_lavcdeint;
  58 extern const vf_info_t vf_info_eq;
  59 extern const vf_info_t vf_info_eq2;
  60 extern const vf_info_t vf_info_gradfun;
  61 extern const vf_info_t vf_info_halfpack;
  62 extern const vf_info_t vf_info_dint;
  63 extern const vf_info_t vf_info_1bpp;
  64 extern const vf_info_t vf_info_2xsai;
  65 extern const vf_info_t vf_info_unsharp;
  66 extern const vf_info_t vf_info_swapuv;
  67 extern const vf_info_t vf_info_il;
  68 extern const vf_info_t vf_info_fil;
  69 extern const vf_info_t vf_info_boxblur;
  70 extern const vf_info_t vf_info_sab;
  71 extern const vf_info_t vf_info_smartblur;
  72 extern const vf_info_t vf_info_perspective;
  73 extern const vf_info_t vf_info_down3dright;
  74 extern const vf_info_t vf_info_field;
  75 extern const vf_info_t vf_info_denoise3d;
  76 extern const vf_info_t vf_info_hqdn3d;
  77 extern const vf_info_t vf_info_detc;
  78 extern const vf_info_t vf_info_telecine;
  79 extern const vf_info_t vf_info_tinterlace;
  80 extern const vf_info_t vf_info_tfields;
  81 extern const vf_info_t vf_info_ivtc;
  82 extern const vf_info_t vf_info_ilpack;
  83 extern const vf_info_t vf_info_dsize;
  84 extern const vf_info_t vf_info_decimate;
  85 extern const vf_info_t vf_info_softpulldown;
  86 extern const vf_info_t vf_info_pullup;
  87 extern const vf_info_t vf_info_filmdint;
  88 extern const vf_info_t vf_info_framestep;
  89 extern const vf_info_t vf_info_tile;
  90 extern const vf_info_t vf_info_delogo;
  91 extern const vf_info_t vf_info_remove_logo;
  92 extern const vf_info_t vf_info_hue;
  93 extern const vf_info_t vf_info_fspp;
  94 extern const vf_info_t vf_info_pp7;
  95 extern const vf_info_t vf_info_yuvcsp;
  96 extern const vf_info_t vf_info_kerndeint;
  97 extern const vf_info_t vf_info_rgbtest;
  98 extern const vf_info_t vf_info_qp;
  99 extern const vf_info_t vf_info_phase;
 100 extern const vf_info_t vf_info_divtc;
 101 extern const vf_info_t vf_info_harddup;
 102 extern const vf_info_t vf_info_softskip;
 103 extern const vf_info_t vf_info_screenshot;
 104 extern const vf_info_t vf_info_ass;
 105 extern const vf_info_t vf_info_yadif;
 106 extern const vf_info_t vf_info_blackframe;
 107 extern const vf_info_t vf_info_geq;
 108 extern const vf_info_t vf_info_ow;
 109 extern const vf_info_t vf_info_fixpts;
 110 extern const vf_info_t vf_info_stereo3d;
 111
 112 // list of available filters:
 113 static const vf_info_t *const filter_list[] = {
 114     &vf_info_rectangle,
 115 #ifdef HAVE_POSIX_SELECT
 116     &vf_info_bmovl,
 117 #endif
 118     &vf_info_crop,
 119     &vf_info_expand,
 120     &vf_info_scale,
 121 //    &vf_info_osd,
 122     &vf_info_vo,
 123     &vf_info_format,
 124     &vf_info_noformat,
 125     &vf_info_flip,
 126     &vf_info_rotate,
 127     &vf_info_mirror,
 128     &vf_info_palette,
 129     &vf_info_pp7,
 130
 131 #ifdef CONFIG_LIBPOSTPROC
 132     &vf_info_pp,
 133 #endif
 134     &vf_info_lavc,
 135     &vf_info_lavcdeint,
 136     &vf_info_screenshot,
 137     &vf_info_fspp,
 138
 139     &vf_info_dvbscale,
 140     &vf_info_cropdetect,
 141     &vf_info_test,
 142     &vf_info_noise,
 143     &vf_info_yvu9,
 144     &vf_info_eq,
 145     &vf_info_eq2,
 146     &vf_info_gradfun,
 147     &vf_info_halfpack,
 148     &vf_info_dint,
 149     &vf_info_1bpp,
 150     &vf_info_2xsai,
 151     &vf_info_unsharp,
 152     &vf_info_swapuv,
 153     &vf_info_il,
 154     &vf_info_fil,
 155     &vf_info_boxblur,
 156     &vf_info_sab,
 157     &vf_info_smartblur,
 158     &vf_info_perspective,
 159     &vf_info_down3dright,
 160     &vf_info_field,
 161     &vf_info_denoise3d,
 162     &vf_info_hqdn3d,
 163     &vf_info_detc,
 164     &vf_info_telecine,
 165     &vf_info_tinterlace,
 166     &vf_info_tfields,
 167     &vf_info_ivtc,
 168     &vf_info_ilpack,
 169     &vf_info_dsize,
 170     &vf_info_decimate,
 171     &vf_info_softpulldown,
 172     &vf_info_pullup,
 173     &vf_info_filmdint,
 174     &vf_info_framestep,
 175     &vf_info_tile,
 176     &vf_info_delogo,
 177     &vf_info_remove_logo,
 178     &vf_info_hue,
 179     &vf_info_geq,
 180     &vf_info_qp,
 181     &vf_info_yuvcsp,
 182     &vf_info_kerndeint,
 183     &vf_info_rgbtest,
 184     &vf_info_phase,
 185     &vf_info_divtc,
 186     &vf_info_harddup,
 187     &vf_info_softskip,
 188 #ifdef CONFIG_ASS
 189     &vf_info_ass,
 190 #endif
 191     &vf_info_yadif,
 192     &vf_info_blackframe,
 193     &vf_info_ow,
 194     &vf_info_fixpts,
 195     &vf_info_stereo3d,
 196     NULL
 197 };
 198
 199 // For the vf option
 200 const m_obj_list_t vf_obj_list = {
 201     (void **)filter_list,
 202     M_ST_OFF(vf_info_t, name),
 203     M_ST_OFF(vf_info_t, info),
 204     M_ST_OFF(vf_info_t, opts)
 205 };
 206
 207 //============================================================================
 208 // mpi stuff:
 209
 210 void vf_mpi_clear(mp_image_t *mpi, int x0, int y0, int w, int h)
 211 {
 212     int y;
 213     if (mpi->flags & MP_IMGFLAG_PLANAR) {
 214         y0 &= ~1;
 215         h += h & 1;
 216         if (x0 == 0 && w == mpi->width) {
 217             // full width clear:
 218             memset(mpi->planes[0] + mpi->stride[0] * y0, 0, mpi->stride[0] * h);
 219             memset(mpi->planes[1] + mpi->stride[1] *(y0 >> mpi->chroma_y_shift),
 220                    128, mpi->stride[1] * (h >> mpi->chroma_y_shift));
 221             memset(mpi->planes[2] + mpi->stride[2] *(y0 >> mpi->chroma_y_shift),
 222                    128, mpi->stride[2] * (h >> mpi->chroma_y_shift));
 223         } else
 224             for (y = y0; y < y0 + h; y += 2) {
 225                 memset(mpi->planes[0] + x0 + mpi->stride[0] * y, 0, w);
 226                 memset(mpi->planes[0] + x0 + mpi->stride[0] * (y + 1), 0, w);
 227                 memset(mpi->planes[1] + (x0 >> mpi->chroma_x_shift) +
 228                        mpi->stride[1] * (y >> mpi->chroma_y_shift),
 229                        128, (w >> mpi->chroma_x_shift));
 230                 memset(mpi->planes[2] + (x0 >> mpi->chroma_x_shift) +
 231                        mpi->stride[2] * (y >> mpi->chroma_y_shift),
 232                        128, (w >> mpi->chroma_x_shift));
 233             }
 234         return;
 235     }
 236     // packed:
 237     for (y = y0; y < y0 + h; y++) {
 238         unsigned char *dst = mpi->planes[0] + mpi->stride[0] * y +
 239                              (mpi->bpp >> 3) * x0;
 240         if (mpi->flags & MP_IMGFLAG_YUV) {
 241             unsigned int *p = (unsigned int *) dst;
 242             int size = (mpi->bpp >> 3) * w / 4;
 243             int i;
 244 #if HAVE_BIGENDIAN
 245 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 246 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 247 #else
 248 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 249 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 250 #endif
 251             if (mpi->flags & MP_IMGFLAG_SWAPPED) {
 252                 for (i = 0; i < size - 3; i += 4)
 253                     p[i] = p[i + 1] = p[i + 2] = p[i + 3] = CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 254                 for (; i < size; i++)
 255                     p[i] = CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 256             } else {
 257                 for (i = 0; i < size - 3; i += 4)
 258                     p[i] = p[i + 1] = p[i + 2] = p[i + 3] = CLEAR_PACKEDYUV_PATTERN;
 259                 for (; i < size; i++)
 260                     p[i] = CLEAR_PACKEDYUV_PATTERN;
 261             }
 262         } else
 263             memset(dst, 0, (mpi->bpp >> 3) * w);
 264     }
 265 }
 266
 267 mp_image_t *vf_get_image(vf_instance_t *vf, unsigned int outfmt,
 268                          int mp_imgtype, int mp_imgflag, int w, int h)
 269 {
 270     mp_image_t *mpi = NULL;
 271     int w2;
 272     int number = mp_imgtype >> 16;
 273
 274     assert(w == -1 || w >= vf->w);
 275     assert(h == -1 || h >= vf->h);
 276     assert(vf->w > 0);
 277     assert(vf->h > 0);
 278
 279     if (w == -1)
 280         w = vf->w;
 281     if (h == -1)
 282         h = vf->h;
 283
 284     w2 = (mp_imgflag & MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE) ?
 285             ((w + 15) & (~15)) : w;
 286
 287     if (vf->put_image == vf_next_put_image) {
 288         // passthru mode, if the filter uses the fallback/default put_image()
 289         return vf_get_image(vf->next, outfmt, mp_imgtype, mp_imgflag, w, h);
 290     }
 291
 292     // Note: we should call libvo first to check if it supports direct rendering
 293     // and if not, then fallback to software buffers:
 294     switch (mp_imgtype & 0xff) {
 295     case MP_IMGTYPE_EXPORT:
 296         if (!vf->imgctx.export_images[0])
 297             vf->imgctx.export_images[0] = new_mp_image(w2, h);
 298         mpi = vf->imgctx.export_images[0];
 299         break;
 300     case MP_IMGTYPE_STATIC:
 301         if (!vf->imgctx.static_images[0])
 302             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])
 307             vf->imgctx.temp_images[0] = new_mp_image(w2, h);
 308         mpi = vf->imgctx.temp_images[0];
 309         break;
 310     case MP_IMGTYPE_IPB:
 311         if (!(mp_imgflag & MP_IMGFLAG_READABLE)) { // B frame:
 312             if (!vf->imgctx.temp_images[0])
 313                 vf->imgctx.temp_images[0] = new_mp_image(w2, h);
 314             mpi = vf->imgctx.temp_images[0];
 315             break;
 316         }
 317     case MP_IMGTYPE_IP:
 318         if (!vf->imgctx.static_images[vf->imgctx.static_idx])
 319             vf->imgctx.static_images[vf->imgctx.static_idx] = new_mp_image(w2, h);
 320         mpi = vf->imgctx.static_images[vf->imgctx.static_idx];
 321         vf->imgctx.static_idx ^= 1;
 322         break;
 323     case MP_IMGTYPE_NUMBERED:
 324         if (number == -1) {
 325             int i;
 326             for (i = 0; i < NUM_NUMBERED_MPI; i++)
 327                 if (!vf->imgctx.numbered_images[i] ||
 328                         !vf->imgctx.numbered_images[i]->usage_count)
 329                     break;
 330             number = i;
 331         }
 332         if (number < 0 || number >= NUM_NUMBERED_MPI)
 333             return NULL;
 334         if (!vf->imgctx.numbered_images[number])
 335             vf->imgctx.numbered_images[number] = new_mp_image(w2, h);
 336         mpi = vf->imgctx.numbered_images[number];
 337         mpi->number = number;
 338         break;
 339     }
 340     if (mpi) {
 341         mpi->type = mp_imgtype;
 342         mpi->w = vf->w;
 343         mpi->h = vf->h;
 344         // keep buffer allocation status & color flags only:
 345         mpi->flags &= MP_IMGFLAG_ALLOCATED | MP_IMGFLAG_TYPE_DISPLAYED |
 346                       MP_IMGFLAGMASK_COLORS;
 347         // accept restrictions, draw_slice and palette flags only:
 348         mpi->flags |= mp_imgflag & (MP_IMGFLAGMASK_RESTRICTIONS |
 349                           MP_IMGFLAG_DRAW_CALLBACK | MP_IMGFLAG_RGB_PALETTE);
 350         if (!vf->draw_slice)
 351             mpi->flags &= ~MP_IMGFLAG_DRAW_CALLBACK;
 352         if (mpi->width != w2 || mpi->height != h) {
 353             if (mpi->flags & MP_IMGFLAG_ALLOCATED) {
 354                 if (mpi->width < w2 || mpi->height < h) {
 355                     // need to re-allocate buffer memory:
 356                     av_free(mpi->planes[0]);
 357                     mpi->flags &= ~MP_IMGFLAG_ALLOCATED;
 358                     mp_msg(MSGT_VFILTER, MSGL_V,
 359                            "vf.c: have to REALLOCATE buffer memory :(\n");
 360                 }
 361             }
 362             mpi->width = w2;
 363             mpi->chroma_width = (w2 + (1 << mpi->chroma_x_shift) - 1) >>
 364                                                      mpi->chroma_x_shift;
 365             mpi->height = h;
 366             mpi->chroma_height = (h + (1 << mpi->chroma_y_shift) - 1) >>
 367                                                      mpi->chroma_y_shift;
 368         }
 369         if (!mpi->bpp)
 370             mp_image_setfmt(mpi, outfmt);
 371         if (!(mpi->flags & MP_IMGFLAG_ALLOCATED) &&
 372                 mpi->type > MP_IMGTYPE_EXPORT) {
 373             // check libvo first!
 374             if (vf->get_image)
 375                 vf->get_image(vf, mpi);
 376
 377             if (!(mpi->flags & MP_IMGFLAG_DIRECT)) {
 378                 // non-direct and not yet allocated image. allocate it!
 379                 if (!mpi->bpp) { // no way we can allocate this
 380                     mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 381                            "vf_get_image: Tried to allocate a format that "
 382                            "can not be allocated!\n");
 383                     return NULL;
 384                 }
 385
 386                 // check if codec prefer aligned stride:
 387                 if (mp_imgflag & MP_IMGFLAG_PREFER_ALIGNED_STRIDE) {
 388                     int align = (mpi->flags & MP_IMGFLAG_PLANAR &&
 389                                  mpi->flags & MP_IMGFLAG_YUV) ?
 390                                 (8 << mpi->chroma_x_shift) - 1 : 15; // OK?
 391                     w2 = ((w + align) & (~align));
 392                     if (mpi->width != w2) {
 393                         // we have to change width... check if we CAN co it:
 394                         int flags = vf->query_format(vf, outfmt);
 395                         // should not fail
 396                         if (!(flags & (VFCAP_CSP_SUPPORTED |
 397                                        VFCAP_CSP_SUPPORTED_BY_HW)))
 398                             mp_msg(MSGT_DECVIDEO, MSGL_WARN,
 399                                    "??? vf_get_image{vf->query_format(outfmt)} "
 400                                    "failed!\n");
 401                         if (flags & VFCAP_ACCEPT_STRIDE) {
 402                             mpi->width = w2;
 403                             mpi->chroma_width =
 404                                 (w2 + (1 << mpi->chroma_x_shift) - 1) >>
 405                                 mpi->chroma_x_shift;
 406                         }
 407                     }
 408                 }
 409
 410                 mp_image_alloc_planes(mpi);
 411                 vf_mpi_clear(mpi, 0, 0, mpi->width, mpi->height);
 412             }
 413         }
 414         if (mpi->flags & MP_IMGFLAG_DRAW_CALLBACK)
 415             if (vf->start_slice)
 416                 vf->start_slice(vf, mpi);
 417         if (!(mpi->flags & MP_IMGFLAG_TYPE_DISPLAYED)) {
 418             mp_msg(MSGT_DECVIDEO, MSGL_V,
 419                    "*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 420                    vf->info->name,
 421                    (mpi->type == MP_IMGTYPE_EXPORT) ? "Exporting" :
 422                    ((mpi->flags & MP_IMGFLAG_DIRECT) ?
 423                             "Direct Rendering" : "Allocating"),
 424                    (mpi->flags & MP_IMGFLAG_DRAW_CALLBACK) ? " (slices)" : "",
 425                    mpi->width, mpi->height, mpi->bpp,
 426                    (mpi->flags & MP_IMGFLAG_YUV) ? "YUV" :
 427                            ((mpi->flags & MP_IMGFLAG_SWAPPED) ? "BGR" : "RGB"),
 428                    (mpi->flags & MP_IMGFLAG_PLANAR) ? "planar" : "packed",
 429                    mpi->bpp * mpi->width * mpi->height / 8);
 430             mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "(imgfmt: %x, planes: %p,%p,%p "
 431                    "strides: %d,%d,%d, chroma: %dx%d, shift: h:%d,v:%d)\n",
 432                    mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 433                    mpi->stride[0], mpi->stride[1], mpi->stride[2],
 434                    mpi->chroma_width, mpi->chroma_height,
 435                    mpi->chroma_x_shift, mpi->chroma_y_shift);
 436             mpi->flags |= MP_IMGFLAG_TYPE_DISPLAYED;
 437         }
 438         mpi->qscale = NULL;
 439     }
 440     mpi->usage_count++;
 441     return mpi;
 442 }
 443
 444 //============================================================================
 445
 446 // By default vf doesn't accept MPEGPES
 447 static int vf_default_query_format(struct vf_instance *vf, unsigned int fmt)
 448 {
 449     if (fmt == IMGFMT_MPEGPES)
 450         return 0;
 451     return vf_next_query_format(vf, fmt);
 452 }
 453
 454 struct vf_instance *vf_open_plugin_noerr(struct MPOpts *opts,
 455                                          const vf_info_t *const *filter_list,
 456                                          vf_instance_t *next, const char *name,
 457                                          char **args, int *retcode)
 458 {
 459     vf_instance_t *vf;
 460     int i;
 461     for (i = 0;; i++) {
 462         if (!filter_list[i]) {
 463             mp_tmsg(MSGT_VFILTER, MSGL_ERR,
 464                     "Couldn't find video filter '%s'.\n", name);
 465             return NULL; // no such filter!
 466         }
 467         if (!strcmp(filter_list[i]->name, name))
 468             break;
 469     }
 470     vf = calloc(1, sizeof *vf);
 471     vf->opts = opts;
 472     vf->info = filter_list[i];
 473     vf->next = next;
 474     vf->config = vf_next_config;
 475     vf->control = vf_next_control;
 476     vf->query_format = vf_default_query_format;
 477     vf->put_image = vf_next_put_image;
 478     vf->default_caps = VFCAP_ACCEPT_STRIDE;
 479     vf->default_reqs = 0;
 480     if (vf->info->opts) { // vf_vo get some special argument
 481         const m_struct_t *st = vf->info->opts;
 482         void *vf_priv = m_struct_alloc(st);
 483         int n;
 484         for (n = 0; args && args[2 * n]; n++)
 485             m_struct_set(st, vf_priv, args[2 * n], bstr(args[2 * n + 1]));
 486         vf->priv = vf_priv;
 487         args = NULL;
 488     } else // Otherwise we should have the '_oldargs_'
 489     if (args && !strcmp(args[0], "_oldargs_"))
 490         args = (char **)args[1];
 491     else
 492         args = NULL;
 493     *retcode = vf->info->vf_open(vf, (char *)args);
 494     if (*retcode > 0)
 495         return vf;
 496     free(vf);
 497     return NULL;
 498 }
 499
 500 struct vf_instance *vf_open_plugin(struct MPOpts *opts,
 501                                    const vf_info_t *const *filter_list,
 502                                    vf_instance_t *next, const char *name,
 503                                    char **args)
 504 {
 505     struct vf_instance *vf = vf_open_plugin_noerr(opts, filter_list, next,
 506                                                   name, args, &(int){0});
 507     if (!vf)
 508         mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Couldn't open video filter '%s'.\n",
 509                 name);
 510     return vf;
 511 }
 512
 513 vf_instance_t *vf_open_filter(struct MPOpts *opts, vf_instance_t *next,
 514                               const char *name, char **args)
 515 {
 516     if (args && strcmp(args[0], "_oldargs_")) {
 517         int i, l = 0;
 518         for (i = 0; args && args[2 * i]; i++)
 519             l += 1 + strlen(args[2 * i]) + 1 + strlen(args[2 * i + 1]);
 520         l += strlen(name);
 521         {
 522             char str[l + 1];
 523             char *p = str;
 524             p += sprintf(str, "%s", name);
 525             for (i = 0; args && args[2 * i]; i++)
 526                 p += sprintf(p, " %s=%s", args[2 * i], args[2 * i + 1]);
 527             mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 528                    mp_gtext("Opening video filter: "), str);
 529         }
 530     } else if (strcmp(name, "vo")) {
 531         if (args && strcmp(args[0], "_oldargs_") == 0)
 532             mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s=%s]\n",
 533                    mp_gtext("Opening video filter: "), name, args[1]);
 534         else
 535             mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 536                    mp_gtext("Opening video filter: "), name);
 537     }
 538     return vf_open_plugin(opts, filter_list, next, name, args);
 539 }
 540
 541 /**
 542  * \brief adds a filter before the last one (which should be the vo filter).
 543  * \param vf start of the filter chain.
 544  * \param name name of the filter to add.
 545  * \param args argument list for the filter.
 546  * \return pointer to the filter instance that was created.
 547  */
 548 vf_instance_t *vf_add_before_vo(vf_instance_t **vf, char *name, char **args)
 549 {
 550     struct MPOpts *opts = (*vf)->opts;
 551     vf_instance_t *vo, *prev = NULL, *new;
 552     // Find the last filter (should be vf_vo)
 553     for (vo = *vf; vo->next; vo = vo->next)
 554         prev = vo;
 555     new = vf_open_filter(opts, vo, name, args);
 556     if (prev)
 557         prev->next = new;
 558     else
 559         *vf = new;
 560     return new;
 561 }
 562
 563 //============================================================================
 564
 565 unsigned int vf_match_csp(vf_instance_t **vfp, const unsigned int *list,
 566                           unsigned int preferred)
 567 {
 568     vf_instance_t *vf = *vfp;
 569     struct MPOpts *opts = vf->opts;
 570     const unsigned int *p;
 571     unsigned int best = 0;
 572     int ret;
 573     if ((p = list))
 574         while (*p) {
 575             ret = vf->query_format(vf, *p);
 576             mp_msg(MSGT_VFILTER, MSGL_V, "[%s] query(%s) -> %x\n",
 577                    vf->info->name, vo_format_name(*p), ret);
 578             if (ret & VFCAP_CSP_SUPPORTED_BY_HW) {
 579                 best = *p;
 580                 break;
 581             }
 582             if (ret & VFCAP_CSP_SUPPORTED && !best)
 583                 best = *p;
 584             ++p;
 585         }
 586     if (best)
 587         return best;      // bingo, they have common csp!
 588     // ok, then try with scale:
 589     if (vf->info == &vf_info_scale)
 590         return 0;     // avoid infinite recursion!
 591     vf = vf_open_filter(opts, vf, "scale", NULL);
 592     if (!vf)
 593         return 0;     // failed to init "scale"
 594     // try the preferred csp first:
 595     if (preferred && vf->query_format(vf, preferred))
 596         best = preferred;
 597     else
 598         // try the list again, now with "scaler" :
 599         if ((p = list))
 600             while (*p) {
 601                 ret = vf->query_format(vf, *p);
 602                 mp_msg(MSGT_VFILTER, MSGL_V, "[%s] query(%s) -> %x\n",
 603                        vf->info->name, vo_format_name(*p), ret);
 604                 if (ret & VFCAP_CSP_SUPPORTED_BY_HW) {
 605                     best = *p;
 606                     break;
 607                 }
 608                 if (ret & VFCAP_CSP_SUPPORTED && !best)
 609                     best = *p;
 610             ++p;
 611         }
 612     if (best)
 613         *vfp = vf;    // else uninit vf  !FIXME!
 614     return best;
 615 }
 616
 617 void vf_clone_mpi_attributes(mp_image_t *dst, mp_image_t *src)
 618 {
 619     dst->pict_type = src->pict_type;
 620     dst->fields = src->fields;
 621     dst->qscale_type = src->qscale_type;
 622     if (dst->width == src->width && dst->height == src->height) {
 623         dst->qstride = src->qstride;
 624         dst->qscale = src->qscale;
 625     }
 626 }
 627
 628 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 629 {
 630     vf->continue_buffered_image = func;
 631 }
 632
 633 // Output the next buffered image (if any) from the filter chain.
 634 // The queue could be kept as a simple stack/list instead avoiding the
 635 // looping here, but there's currently no good context variable where
 636 // that could be stored so this was easier to implement.
 637
 638 int vf_output_queued_frame(vf_instance_t *vf)
 639 {
 640     while (1) {
 641         int ret;
 642         vf_instance_t *current;
 643         vf_instance_t *last = NULL;
 644         int (*tmp)(vf_instance_t *);
 645         for (current = vf; current; current = current->next)
 646             if (current->continue_buffered_image)
 647                 last = current;
 648         if (!last)
 649             return 0;
 650         tmp = last->continue_buffered_image;
 651         last->continue_buffered_image = NULL;
 652         ret = tmp(last);
 653         if (ret)
 654             return ret;
 655     }
 656 }
 657
 658
 659 /**
 660  * \brief Video config() function wrapper
 661  *
 662  * Blocks config() calls with different size or format for filters
 663  * with VFCAP_CONSTANT
 664  *
 665  * First call is redirected to vf->config.
 666  *
 667  * In following calls, it verifies that the configuration parameters
 668  * are unchanged, and returns either success or error.
 669  *
 670  */
 671 int vf_config_wrapper(struct vf_instance *vf,
 672                       int width, int height, int d_width, int d_height,
 673                       unsigned int flags, unsigned int outfmt)
 674 {
 675     int r;
 676     if ((vf->default_caps & VFCAP_CONSTANT) && vf->fmt.have_configured) {
 677         if ((vf->fmt.orig_width != width)
 678             || (vf->fmt.orig_height != height)
 679             || (vf->fmt.orig_fmt != outfmt)) {
 680             mp_tmsg(MSGT_VFILTER, MSGL_ERR, "\nNew video file has different "
 681                     "resolution or colorspace than the previous one.\n");
 682             return 0;
 683         }
 684         return 1;
 685     }
 686     vf->fmt.have_configured = 1;
 687     vf->fmt.orig_height = height;
 688     vf->fmt.orig_width = width;
 689     vf->fmt.orig_fmt = outfmt;
 690     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 691     if (!r)
 692         vf->fmt.have_configured = 0;
 693     return r;
 694 }
 695
 696 int vf_next_config(struct vf_instance *vf,
 697                    int width, int height, int d_width, int d_height,
 698                    unsigned int voflags, unsigned int outfmt)
 699 {
 700     struct MPOpts *opts = vf->opts;
 701     int miss;
 702     int flags = vf->next->query_format(vf->next, outfmt);
 703     if (!flags) {
 704         // hmm. colorspace mismatch!!!
 705         // let's insert the 'scale' filter, it does the job for us:
 706         vf_instance_t *vf2;
 707         if (vf->next->info == &vf_info_scale)
 708             return 0;                                // scale->scale
 709         vf2 = vf_open_filter(opts, vf->next, "scale", NULL);
 710         if (!vf2)
 711             return 0;      // shouldn't happen!
 712         vf->next = vf2;
 713         flags = vf->next->query_format(vf->next, outfmt);
 714         if (!flags) {
 715             mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Cannot find matching colorspace, "
 716                     "even by inserting 'scale' :(\n");
 717             return 0; // FAIL
 718         }
 719     }
 720     mp_msg(MSGT_VFILTER, MSGL_V, "REQ: flags=0x%X  req=0x%X  \n",
 721            flags, vf->default_reqs);
 722     miss = vf->default_reqs - (flags & vf->default_reqs);
 723     if (miss & VFCAP_ACCEPT_STRIDE) {
 724         // vf requires stride support but vf->next doesn't support it!
 725         // let's insert the 'expand' filter, it does the job for us:
 726         vf_instance_t *vf2 = vf_open_filter(opts, vf->next, "expand", NULL);
 727         if (!vf2)
 728             return 0;      // shouldn't happen!
 729         vf->next = vf2;
 730     }
 731     vf->next->w = width;
 732     vf->next->h = height;
 733     return vf_config_wrapper(vf->next, width, height, d_width, d_height,
 734                              voflags, outfmt);
 735 }
 736
 737 int vf_next_control(struct vf_instance *vf, int request, void *data)
 738 {
 739     return vf->next->control(vf->next, request, data);
 740 }
 741
 742 int vf_next_query_format(struct vf_instance *vf, unsigned int fmt)
 743 {
 744     int flags = vf->next->query_format(vf->next, fmt);
 745     if (flags)
 746         flags |= vf->default_caps;
 747     return flags;
 748 }
 749
 750 int vf_next_put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
 751 {
 752     return vf->next->put_image(vf->next, mpi, pts);
 753 }
 754
 755 void vf_next_draw_slice(struct vf_instance *vf, unsigned char **src,
 756                         int *stride, int w, int h, int x, int y)
 757 {
 758     if (vf->next->draw_slice) {
 759         vf->next->draw_slice(vf->next, src, stride, w, h, x, y);
 760         return;
 761     }
 762     if (!vf->dmpi) {
 763         mp_msg(MSGT_VFILTER, MSGL_ERR,
 764                "draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 765         return;
 766     }
 767     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 768         memcpy_pic(vf->dmpi->planes[0] + y * vf->dmpi->stride[0] +
 769                        vf->dmpi->bpp / 8 * x,
 770                    src[0], vf->dmpi->bpp / 8 * w, h, vf->dmpi->stride[0],
 771                    stride[0]);
 772         return;
 773     }
 774     memcpy_pic(vf->dmpi->planes[0] + y * vf->dmpi->stride[0] + x, src[0],
 775                w, h, vf->dmpi->stride[0], stride[0]);
 776     memcpy_pic(vf->dmpi->planes[1]
 777                    + (y >> vf->dmpi->chroma_y_shift) * vf->dmpi->stride[1]
 778                    + (x >> vf->dmpi->chroma_x_shift),
 779                src[1], w >> vf->dmpi->chroma_x_shift,
 780                h >> vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 781     memcpy_pic(vf->dmpi->planes[2]
 782                    + (y >> vf->dmpi->chroma_y_shift) * vf->dmpi->stride[2]
 783                    + (x >> vf->dmpi->chroma_x_shift),
 784                src[2], w >> vf->dmpi->chroma_x_shift,
 785                h >> vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 786 }
 787
 788 //============================================================================
 789
 790 vf_instance_t *append_filters(vf_instance_t *last,
 791                               struct m_obj_settings *vf_settings)
 792 {
 793     struct MPOpts *opts = last->opts;
 794     vf_instance_t *vf;
 795     int i;
 796
 797     if (vf_settings) {
 798         // We want to add them in the 'right order'
 799         for (i = 0; vf_settings[i].name; i++)
 800             /* NOP */;
 801         for (i--; i >= 0; i--) {
 802             //printf("Open filter %s\n",vf_settings[i].name);
 803             vf = vf_open_filter(opts, last, vf_settings[i].name,
 804                                 vf_settings[i].attribs);
 805             if (vf)
 806                 last = vf;
 807         }
 808     }
 809     return last;
 810 }
 811
 812 //============================================================================
 813
 814 void vf_uninit_filter(vf_instance_t *vf)
 815 {
 816     if (vf->uninit)
 817         vf->uninit(vf);
 818     free_mp_image(vf->imgctx.static_images[0]);
 819     free_mp_image(vf->imgctx.static_images[1]);
 820     free_mp_image(vf->imgctx.temp_images[0]);
 821     free_mp_image(vf->imgctx.export_images[0]);
 822     for (int i = 0; i < NUM_NUMBERED_MPI; i++)
 823         free_mp_image(vf->imgctx.numbered_images[i]);
 824     free(vf);
 825 }
 826
 827 void vf_uninit_filter_chain(vf_instance_t *vf)
 828 {
 829     while (vf) {
 830         vf_instance_t *next = vf->next;
 831         vf_uninit_filter(vf);
 832         vf = next;
 833     }
 834 }
 835
 836 void vf_detc_init_pts_buf(struct vf_detc_pts_buf *p)
 837 {
 838     p->inpts_prev = MP_NOPTS_VALUE;
 839     p->outpts_prev = MP_NOPTS_VALUE;
 840     p->lastdelta = 0;
 841 }
 842
 843 static double vf_detc_adjust_pts_internal(struct vf_detc_pts_buf *p,
 844                                           double pts, bool reset_pattern,
 845                                           bool skip_frame, double delta,
 846                                           double boundfactor_minus,
 847                                           double increasefactor,
 848                                           double boundfactor_plus)
 849 {
 850     double newpts;
 851
 852     if (pts == MP_NOPTS_VALUE)
 853         return pts;
 854
 855     if (delta <= 0) {
 856         if (p->inpts_prev == MP_NOPTS_VALUE)
 857             delta = 0;
 858         else if (pts == p->inpts_prev)
 859             delta = p->lastdelta;
 860         else
 861             delta = pts - p->inpts_prev;
 862     }
 863     p->inpts_prev = pts;
 864     p->lastdelta = delta;
 865
 866     if (skip_frame)
 867         return MP_NOPTS_VALUE;
 868
 869     /* detect bogus deltas and then passthru pts (possibly caused by seeking,
 870      * or bad input) */
 871     if (p->outpts_prev == MP_NOPTS_VALUE || reset_pattern || delta <= 0.0 ||
 872             delta >= 0.5)
 873         newpts = pts;
 874     else {
 875         // turn 5 frames into 4
 876         newpts = p->outpts_prev + delta * increasefactor;
 877
 878         // bound to input pts in a sensible way; these numbers come because we
 879         // map frames the following way when ivtc'ing:
 880         // 0/30 -> 0/24   diff=0
 881         // 1/30 -> 1/24   diff=1/120
 882         // 2/30 -> -
 883         // 3/30 -> 2/24   diff=-1/60
 884         // 4/30 -> 3/24   diff=-1/120
 885         if (newpts < pts - delta * boundfactor_minus)
 886             newpts = pts - delta * boundfactor_minus;
 887         if (newpts > pts + delta * boundfactor_plus)
 888             newpts = pts + delta * boundfactor_plus;
 889         if (newpts < p->outpts_prev)
 890             newpts = p->outpts_prev;  // damage control
 891     }
 892     p->outpts_prev = newpts;
 893
 894     return newpts;
 895 }
 896
 897 double vf_detc_adjust_pts(struct vf_detc_pts_buf *p, double pts,
 898                           bool reset_pattern, bool skip_frame)
 899 {
 900     // standard telecine (see above)
 901     return vf_detc_adjust_pts_internal(p, pts, reset_pattern, skip_frame,
 902                                        0, 0.5, 1.25, 0.25);
 903 }
 904
 905 double vf_softpulldown_adjust_pts(struct vf_detc_pts_buf *p, double pts,
 906                                   bool reset_pattern, bool skip_frame,
 907                                   int last_frame_duration)
 908 {
 909     // for the softpulldown filter we get:
 910     // 0/60 -> 0/30
 911     // 2/60 -> 1/30
 912     // 5/60 -> 2/30
 913     // 7/60 -> 3/30, 4/30
 914     return vf_detc_adjust_pts_internal(p, pts, reset_pattern, skip_frame,
 915                                        0, 1.0 / last_frame_duration,
 916                                        2.0 / last_frame_duration,
 917                                        1.0 / last_frame_duration);
 918 }