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 #if HAVE_MALLOC_H
  26 #include <malloc.h>
  27 #endif
  28
  29 #include "mp_msg.h"
  30 #include "m_option.h"
  31 #include "m_struct.h"
  32
  33
  34 #include "img_format.h"
  35 #include "mp_image.h"
  36 #include "vf.h"
  37
  38 #include "libvo/fastmemcpy.h"
  39 #include "libavutil/mem.h"
  40
  41 extern const vf_info_t vf_info_vo;
  42 extern const vf_info_t vf_info_rectangle;
  43 extern const vf_info_t vf_info_bmovl;
  44 extern const vf_info_t vf_info_crop;
  45 extern const vf_info_t vf_info_expand;
  46 extern const vf_info_t vf_info_pp;
  47 extern const vf_info_t vf_info_scale;
  48 extern const vf_info_t vf_info_format;
  49 extern const vf_info_t vf_info_noformat;
  50 extern const vf_info_t vf_info_flip;
  51 extern const vf_info_t vf_info_rotate;
  52 extern const vf_info_t vf_info_mirror;
  53 extern const vf_info_t vf_info_palette;
  54 extern const vf_info_t vf_info_lavc;
  55 extern const vf_info_t vf_info_dvbscale;
  56 extern const vf_info_t vf_info_cropdetect;
  57 extern const vf_info_t vf_info_test;
  58 extern const vf_info_t vf_info_noise;
  59 extern const vf_info_t vf_info_yvu9;
  60 extern const vf_info_t vf_info_lavcdeint;
  61 extern const vf_info_t vf_info_eq;
  62 extern const vf_info_t vf_info_eq2;
  63 extern const vf_info_t vf_info_gradfun;
  64 extern const vf_info_t vf_info_halfpack;
  65 extern const vf_info_t vf_info_dint;
  66 extern const vf_info_t vf_info_1bpp;
  67 extern const vf_info_t vf_info_2xsai;
  68 extern const vf_info_t vf_info_unsharp;
  69 extern const vf_info_t vf_info_swapuv;
  70 extern const vf_info_t vf_info_il;
  71 extern const vf_info_t vf_info_fil;
  72 extern const vf_info_t vf_info_boxblur;
  73 extern const vf_info_t vf_info_sab;
  74 extern const vf_info_t vf_info_smartblur;
  75 extern const vf_info_t vf_info_perspective;
  76 extern const vf_info_t vf_info_down3dright;
  77 extern const vf_info_t vf_info_field;
  78 extern const vf_info_t vf_info_denoise3d;
  79 extern const vf_info_t vf_info_hqdn3d;
  80 extern const vf_info_t vf_info_detc;
  81 extern const vf_info_t vf_info_telecine;
  82 extern const vf_info_t vf_info_tinterlace;
  83 extern const vf_info_t vf_info_tfields;
  84 extern const vf_info_t vf_info_ivtc;
  85 extern const vf_info_t vf_info_ilpack;
  86 extern const vf_info_t vf_info_dsize;
  87 extern const vf_info_t vf_info_decimate;
  88 extern const vf_info_t vf_info_softpulldown;
  89 extern const vf_info_t vf_info_pullup;
  90 extern const vf_info_t vf_info_filmdint;
  91 extern const vf_info_t vf_info_framestep;
  92 extern const vf_info_t vf_info_tile;
  93 extern const vf_info_t vf_info_delogo;
  94 extern const vf_info_t vf_info_remove_logo;
  95 extern const vf_info_t vf_info_hue;
  96 extern const vf_info_t vf_info_spp;
  97 extern const vf_info_t vf_info_uspp;
  98 extern const vf_info_t vf_info_fspp;
  99 extern const vf_info_t vf_info_pp7;
 100 extern const vf_info_t vf_info_yuvcsp;
 101 extern const vf_info_t vf_info_kerndeint;
 102 extern const vf_info_t vf_info_rgbtest;
 103 extern const vf_info_t vf_info_qp;
 104 extern const vf_info_t vf_info_phase;
 105 extern const vf_info_t vf_info_divtc;
 106 extern const vf_info_t vf_info_harddup;
 107 extern const vf_info_t vf_info_softskip;
 108 extern const vf_info_t vf_info_screenshot;
 109 extern const vf_info_t vf_info_ass;
 110 extern const vf_info_t vf_info_mcdeint;
 111 extern const vf_info_t vf_info_yadif;
 112 extern const vf_info_t vf_info_blackframe;
 113 extern const vf_info_t vf_info_geq;
 114 extern const vf_info_t vf_info_ow;
 115 extern const vf_info_t vf_info_fixpts;
 116 extern const vf_info_t vf_info_stereo3d;
 117
 118 // list of available filters:
 119 static const vf_info_t *const filter_list[] = {
 120     &vf_info_rectangle,
 121 #ifdef HAVE_POSIX_SELECT
 122     &vf_info_bmovl,
 123 #endif
 124     &vf_info_crop,
 125     &vf_info_expand,
 126     &vf_info_scale,
 127 //    &vf_info_osd,
 128     &vf_info_vo,
 129     &vf_info_format,
 130     &vf_info_noformat,
 131     &vf_info_flip,
 132     &vf_info_rotate,
 133     &vf_info_mirror,
 134     &vf_info_palette,
 135     &vf_info_pp7,
 136
 137 #ifdef CONFIG_LIBPOSTPROC
 138     &vf_info_pp,
 139 #endif
 140     &vf_info_lavc,
 141     &vf_info_lavcdeint,
 142     &vf_info_screenshot,
 143     &vf_info_fspp,
 144     &vf_info_uspp,
 145
 146     &vf_info_dvbscale,
 147     &vf_info_cropdetect,
 148     &vf_info_test,
 149     &vf_info_noise,
 150     &vf_info_yvu9,
 151     &vf_info_eq,
 152     &vf_info_eq2,
 153     &vf_info_gradfun,
 154     &vf_info_halfpack,
 155     &vf_info_dint,
 156     &vf_info_1bpp,
 157     &vf_info_2xsai,
 158     &vf_info_unsharp,
 159     &vf_info_swapuv,
 160     &vf_info_il,
 161     &vf_info_fil,
 162     &vf_info_boxblur,
 163     &vf_info_sab,
 164     &vf_info_smartblur,
 165     &vf_info_perspective,
 166     &vf_info_down3dright,
 167     &vf_info_field,
 168     &vf_info_denoise3d,
 169     &vf_info_hqdn3d,
 170     &vf_info_detc,
 171     &vf_info_telecine,
 172     &vf_info_tinterlace,
 173     &vf_info_tfields,
 174     &vf_info_ivtc,
 175     &vf_info_ilpack,
 176     &vf_info_dsize,
 177     &vf_info_decimate,
 178     &vf_info_softpulldown,
 179     &vf_info_pullup,
 180     &vf_info_filmdint,
 181     &vf_info_framestep,
 182     &vf_info_tile,
 183     &vf_info_delogo,
 184     &vf_info_remove_logo,
 185     &vf_info_hue,
 186 #ifdef CONFIG_FFMPEG_INTERNALS
 187     &vf_info_spp,
 188     &vf_info_mcdeint,
 189 #endif
 190     &vf_info_geq,
 191     &vf_info_qp,
 192     &vf_info_yuvcsp,
 193     &vf_info_kerndeint,
 194     &vf_info_rgbtest,
 195     &vf_info_phase,
 196     &vf_info_divtc,
 197     &vf_info_harddup,
 198     &vf_info_softskip,
 199 #ifdef CONFIG_ASS
 200     &vf_info_ass,
 201 #endif
 202     &vf_info_yadif,
 203     &vf_info_blackframe,
 204     &vf_info_ow,
 205     &vf_info_fixpts,
 206     &vf_info_stereo3d,
 207     NULL
 208 };
 209
 210 // For the vf option
 211 const m_obj_list_t vf_obj_list = {
 212     (void **)filter_list,
 213     M_ST_OFF(vf_info_t, name),
 214     M_ST_OFF(vf_info_t, info),
 215     M_ST_OFF(vf_info_t, opts)
 216 };
 217
 218 //============================================================================
 219 // mpi stuff:
 220
 221 void vf_mpi_clear(mp_image_t *mpi, int x0, int y0, int w, int h)
 222 {
 223     int y;
 224     if (mpi->flags & MP_IMGFLAG_PLANAR) {
 225         y0 &= ~1;
 226         h += h & 1;
 227         if (x0 == 0 && w == mpi->width) {
 228             // full width clear:
 229             memset(mpi->planes[0] + mpi->stride[0] * y0, 0, mpi->stride[0] * h);
 230             memset(mpi->planes[1] + mpi->stride[1] *(y0 >> mpi->chroma_y_shift),
 231                    128, mpi->stride[1] * (h >> mpi->chroma_y_shift));
 232             memset(mpi->planes[2] + mpi->stride[2] *(y0 >> mpi->chroma_y_shift),
 233                    128, mpi->stride[2] * (h >> mpi->chroma_y_shift));
 234         } else
 235             for (y = y0; y < y0 + h; y += 2) {
 236                 memset(mpi->planes[0] + x0 + mpi->stride[0] * y, 0, w);
 237                 memset(mpi->planes[0] + x0 + mpi->stride[0] * (y + 1), 0, w);
 238                 memset(mpi->planes[1] + (x0 >> mpi->chroma_x_shift) +
 239                        mpi->stride[1] * (y >> mpi->chroma_y_shift),
 240                        128, (w >> mpi->chroma_x_shift));
 241                 memset(mpi->planes[2] + (x0 >> mpi->chroma_x_shift) +
 242                        mpi->stride[2] * (y >> mpi->chroma_y_shift),
 243                        128, (w >> mpi->chroma_x_shift));
 244             }
 245         return;
 246     }
 247     // packed:
 248     for (y = y0; y < y0 + h; y++) {
 249         unsigned char *dst = mpi->planes[0] + mpi->stride[0] * y +
 250                              (mpi->bpp >> 3) * x0;
 251         if (mpi->flags & MP_IMGFLAG_YUV) {
 252             unsigned int *p = (unsigned int *) dst;
 253             int size = (mpi->bpp >> 3) * w / 4;
 254             int i;
 255 #if HAVE_BIGENDIAN
 256 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 257 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 258 #else
 259 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 260 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 261 #endif
 262             if (mpi->flags & MP_IMGFLAG_SWAPPED) {
 263                 for (i = 0; i < size - 3; i += 4)
 264                     p[i] = p[i + 1] = p[i + 2] = p[i + 3] = CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 265                 for (; i < size; i++)
 266                     p[i] = CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 267             } else {
 268                 for (i = 0; i < size - 3; i += 4)
 269                     p[i] = p[i + 1] = p[i + 2] = p[i + 3] = CLEAR_PACKEDYUV_PATTERN;
 270                 for (; i < size; i++)
 271                     p[i] = CLEAR_PACKEDYUV_PATTERN;
 272             }
 273         } else
 274             memset(dst, 0, (mpi->bpp >> 3) * w);
 275     }
 276 }
 277
 278 mp_image_t *vf_get_image(vf_instance_t *vf, unsigned int outfmt,
 279                          int mp_imgtype, int mp_imgflag, int w, int h)
 280 {
 281     mp_image_t *mpi = NULL;
 282     int w2;
 283     int number = mp_imgtype >> 16;
 284
 285     assert(w == -1 || w >= vf->w);
 286     assert(h == -1 || h >= vf->h);
 287     assert(vf->w > 0);
 288     assert(vf->h > 0);
 289
 290     if (w == -1)
 291         w = vf->w;
 292     if (h == -1)
 293         h = vf->h;
 294
 295     w2 = (mp_imgflag & MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE) ?
 296             ((w + 15) & (~15)) : w;
 297
 298     if (vf->put_image == vf_next_put_image) {
 299         // passthru mode, if the filter uses the fallback/default put_image()
 300         return vf_get_image(vf->next, outfmt, mp_imgtype, mp_imgflag, w, h);
 301     }
 302
 303     // Note: we should call libvo first to check if it supports direct rendering
 304     // and if not, then fallback to software buffers:
 305     switch (mp_imgtype & 0xff) {
 306     case MP_IMGTYPE_EXPORT:
 307         if (!vf->imgctx.export_images[0])
 308             vf->imgctx.export_images[0] = new_mp_image(w2, h);
 309         mpi = vf->imgctx.export_images[0];
 310         break;
 311     case MP_IMGTYPE_STATIC:
 312         if (!vf->imgctx.static_images[0])
 313             vf->imgctx.static_images[0] = new_mp_image(w2, h);
 314         mpi = vf->imgctx.static_images[0];
 315         break;
 316     case MP_IMGTYPE_TEMP:
 317         if (!vf->imgctx.temp_images[0])
 318             vf->imgctx.temp_images[0] = new_mp_image(w2, h);
 319         mpi = vf->imgctx.temp_images[0];
 320         break;
 321     case MP_IMGTYPE_IPB:
 322         if (!(mp_imgflag & MP_IMGFLAG_READABLE)) { // B frame:
 323             if (!vf->imgctx.temp_images[0])
 324                 vf->imgctx.temp_images[0] = new_mp_image(w2, h);
 325             mpi = vf->imgctx.temp_images[0];
 326             break;
 327         }
 328     case MP_IMGTYPE_IP:
 329         if (!vf->imgctx.static_images[vf->imgctx.static_idx])
 330             vf->imgctx.static_images[vf->imgctx.static_idx] = new_mp_image(w2, h);
 331         mpi = vf->imgctx.static_images[vf->imgctx.static_idx];
 332         vf->imgctx.static_idx ^= 1;
 333         break;
 334     case MP_IMGTYPE_NUMBERED:
 335         if (number == -1) {
 336             int i;
 337             for (i = 0; i < NUM_NUMBERED_MPI; i++)
 338                 if (!vf->imgctx.numbered_images[i] ||
 339                         !vf->imgctx.numbered_images[i]->usage_count)
 340                     break;
 341             number = i;
 342         }
 343         if (number < 0 || number >= NUM_NUMBERED_MPI)
 344             return NULL;
 345         if (!vf->imgctx.numbered_images[number])
 346             vf->imgctx.numbered_images[number] = new_mp_image(w2, h);
 347         mpi = vf->imgctx.numbered_images[number];
 348         mpi->number = number;
 349         break;
 350     }
 351     if (mpi) {
 352         mpi->type = mp_imgtype;
 353         mpi->w = vf->w;
 354         mpi->h = vf->h;
 355         // keep buffer allocation status & color flags only:
 356         mpi->flags &= MP_IMGFLAG_ALLOCATED | MP_IMGFLAG_TYPE_DISPLAYED |
 357                       MP_IMGFLAGMASK_COLORS;
 358         // accept restrictions, draw_slice and palette flags only:
 359         mpi->flags |= mp_imgflag & (MP_IMGFLAGMASK_RESTRICTIONS |
 360                           MP_IMGFLAG_DRAW_CALLBACK | MP_IMGFLAG_RGB_PALETTE);
 361         if (!vf->draw_slice)
 362             mpi->flags &= ~MP_IMGFLAG_DRAW_CALLBACK;
 363         if (mpi->width != w2 || mpi->height != h) {
 364             if (mpi->flags & MP_IMGFLAG_ALLOCATED) {
 365                 if (mpi->width < w2 || mpi->height < h) {
 366                     // need to re-allocate buffer memory:
 367                     av_free(mpi->planes[0]);
 368                     mpi->flags &= ~MP_IMGFLAG_ALLOCATED;
 369                     mp_msg(MSGT_VFILTER, MSGL_V,
 370                            "vf.c: have to REALLOCATE buffer memory :(\n");
 371                 }
 372             }
 373             mpi->width = w2;
 374             mpi->chroma_width = (w2 + (1 << mpi->chroma_x_shift) - 1) >>
 375                                                      mpi->chroma_x_shift;
 376             mpi->height = h;
 377             mpi->chroma_height = (h + (1 << mpi->chroma_y_shift) - 1) >>
 378                                                      mpi->chroma_y_shift;
 379         }
 380         if (!mpi->bpp)
 381             mp_image_setfmt(mpi, outfmt);
 382         if (!(mpi->flags & MP_IMGFLAG_ALLOCATED) &&
 383                 mpi->type > MP_IMGTYPE_EXPORT) {
 384             // check libvo first!
 385             if (vf->get_image)
 386                 vf->get_image(vf, mpi);
 387
 388             if (!(mpi->flags & MP_IMGFLAG_DIRECT)) {
 389                 // non-direct and not yet allocated image. allocate it!
 390                 if (!mpi->bpp) { // no way we can allocate this
 391                     mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 392                            "vf_get_image: Tried to allocate a format that "
 393                            "can not be allocated!\n");
 394                     return NULL;
 395                 }
 396
 397                 // check if codec prefer aligned stride:
 398                 if (mp_imgflag & MP_IMGFLAG_PREFER_ALIGNED_STRIDE) {
 399                     int align = (mpi->flags & MP_IMGFLAG_PLANAR &&
 400                                  mpi->flags & MP_IMGFLAG_YUV) ?
 401                                 (8 << mpi->chroma_x_shift) - 1 : 15; // OK?
 402                     w2 = ((w + align) & (~align));
 403                     if (mpi->width != w2) {
 404                         // we have to change width... check if we CAN co it:
 405                         int flags = vf->query_format(vf, outfmt);
 406                         // should not fail
 407                         if (!(flags & (VFCAP_CSP_SUPPORTED |
 408                                        VFCAP_CSP_SUPPORTED_BY_HW)))
 409                             mp_msg(MSGT_DECVIDEO, MSGL_WARN,
 410                                    "??? vf_get_image{vf->query_format(outfmt)} "
 411                                    "failed!\n");
 412                         if (flags & VFCAP_ACCEPT_STRIDE) {
 413                             mpi->width = w2;
 414                             mpi->chroma_width =
 415                                 (w2 + (1 << mpi->chroma_x_shift) - 1) >>
 416                                 mpi->chroma_x_shift;
 417                         }
 418                     }
 419                 }
 420
 421                 mp_image_alloc_planes(mpi);
 422                 vf_mpi_clear(mpi, 0, 0, mpi->width, mpi->height);
 423             }
 424         }
 425         if (mpi->flags & MP_IMGFLAG_DRAW_CALLBACK)
 426             if (vf->start_slice)
 427                 vf->start_slice(vf, mpi);
 428         if (!(mpi->flags & MP_IMGFLAG_TYPE_DISPLAYED)) {
 429             mp_msg(MSGT_DECVIDEO, MSGL_V,
 430                    "*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 431                    vf->info->name,
 432                    (mpi->type == MP_IMGTYPE_EXPORT) ? "Exporting" :
 433                    ((mpi->flags & MP_IMGFLAG_DIRECT) ?
 434                             "Direct Rendering" : "Allocating"),
 435                    (mpi->flags & MP_IMGFLAG_DRAW_CALLBACK) ? " (slices)" : "",
 436                    mpi->width, mpi->height, mpi->bpp,
 437                    (mpi->flags & MP_IMGFLAG_YUV) ? "YUV" :
 438                            ((mpi->flags & MP_IMGFLAG_SWAPPED) ? "BGR" : "RGB"),
 439                    (mpi->flags & MP_IMGFLAG_PLANAR) ? "planar" : "packed",
 440                    mpi->bpp * mpi->width * mpi->height / 8);
 441             mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "(imgfmt: %x, planes: %p,%p,%p "
 442                    "strides: %d,%d,%d, chroma: %dx%d, shift: h:%d,v:%d)\n",
 443                    mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 444                    mpi->stride[0], mpi->stride[1], mpi->stride[2],
 445                    mpi->chroma_width, mpi->chroma_height,
 446                    mpi->chroma_x_shift, mpi->chroma_y_shift);
 447             mpi->flags |= MP_IMGFLAG_TYPE_DISPLAYED;
 448         }
 449         mpi->qscale = NULL;
 450     }
 451     mpi->usage_count++;
 452     return mpi;
 453 }
 454
 455 //============================================================================
 456
 457 // By default vf doesn't accept MPEGPES
 458 static int vf_default_query_format(struct vf_instance *vf, unsigned int fmt)
 459 {
 460     if (fmt == IMGFMT_MPEGPES)
 461         return 0;
 462     return vf_next_query_format(vf, fmt);
 463 }
 464
 465 struct vf_instance *vf_open_plugin_noerr(struct MPOpts *opts,
 466                                          const vf_info_t *const *filter_list,
 467                                          vf_instance_t *next, const char *name,
 468                                          char **args, int *retcode)
 469 {
 470     vf_instance_t *vf;
 471     int i;
 472     for (i = 0;; i++) {
 473         if (!filter_list[i]) {
 474             mp_tmsg(MSGT_VFILTER, MSGL_ERR,
 475                     "Couldn't find video filter '%s'.\n", name);
 476             return NULL; // no such filter!
 477         }
 478         if (!strcmp(filter_list[i]->name, name))
 479             break;
 480     }
 481     vf = calloc(1, sizeof *vf);
 482     vf->opts = opts;
 483     vf->info = filter_list[i];
 484     vf->next = next;
 485     vf->config = vf_next_config;
 486     vf->control = vf_next_control;
 487     vf->query_format = vf_default_query_format;
 488     vf->put_image = vf_next_put_image;
 489     vf->default_caps = VFCAP_ACCEPT_STRIDE;
 490     vf->default_reqs = 0;
 491     if (vf->info->opts) { // vf_vo get some special argument
 492         const m_struct_t *st = vf->info->opts;
 493         void *vf_priv = m_struct_alloc(st);
 494         int n;
 495         for (n = 0; args && args[2 * n]; n++)
 496             m_struct_set(st, vf_priv, args[2 * n], bstr(args[2 * n + 1]));
 497         vf->priv = vf_priv;
 498         args = NULL;
 499     } else // Otherwise we should have the '_oldargs_'
 500     if (args && !strcmp(args[0], "_oldargs_"))
 501         args = (char **)args[1];
 502     else
 503         args = NULL;
 504     *retcode = vf->info->vf_open(vf, (char *)args);
 505     if (*retcode > 0)
 506         return vf;
 507     free(vf);
 508     return NULL;
 509 }
 510
 511 struct vf_instance *vf_open_plugin(struct MPOpts *opts,
 512                                    const vf_info_t *const *filter_list,
 513                                    vf_instance_t *next, const char *name,
 514                                    char **args)
 515 {
 516     struct vf_instance *vf = vf_open_plugin_noerr(opts, filter_list, next,
 517                                                   name, args, &(int){0});
 518     if (!vf)
 519         mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Couldn't open video filter '%s'.\n",
 520                 name);
 521     return vf;
 522 }
 523
 524 vf_instance_t *vf_open_filter(struct MPOpts *opts, vf_instance_t *next,
 525                               const char *name, char **args)
 526 {
 527     if (args && strcmp(args[0], "_oldargs_")) {
 528         int i, l = 0;
 529         for (i = 0; args && args[2 * i]; i++)
 530             l += 1 + strlen(args[2 * i]) + 1 + strlen(args[2 * i + 1]);
 531         l += strlen(name);
 532         {
 533             char str[l + 1];
 534             char *p = str;
 535             p += sprintf(str, "%s", name);
 536             for (i = 0; args && args[2 * i]; i++)
 537                 p += sprintf(p, " %s=%s", args[2 * i], args[2 * i + 1]);
 538             mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 539                    mp_gtext("Opening video filter: "), str);
 540         }
 541     } else if (strcmp(name, "vo")) {
 542         if (args && strcmp(args[0], "_oldargs_") == 0)
 543             mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s=%s]\n",
 544                    mp_gtext("Opening video filter: "), name, args[1]);
 545         else
 546             mp_msg(MSGT_VFILTER, MSGL_INFO, "%s[%s]\n",
 547                    mp_gtext("Opening video filter: "), name);
 548     }
 549     return vf_open_plugin(opts, filter_list, next, name, args);
 550 }
 551
 552 /**
 553  * \brief adds a filter before the last one (which should be the vo filter).
 554  * \param vf start of the filter chain.
 555  * \param name name of the filter to add.
 556  * \param args argument list for the filter.
 557  * \return pointer to the filter instance that was created.
 558  */
 559 vf_instance_t *vf_add_before_vo(vf_instance_t **vf, char *name, char **args)
 560 {
 561     struct MPOpts *opts = (*vf)->opts;
 562     vf_instance_t *vo, *prev = NULL, *new;
 563     // Find the last filter (should be vf_vo)
 564     for (vo = *vf; vo->next; vo = vo->next)
 565         prev = vo;
 566     new = vf_open_filter(opts, vo, name, args);
 567     if (prev)
 568         prev->next = new;
 569     else
 570         *vf = new;
 571     return new;
 572 }
 573
 574 //============================================================================
 575
 576 unsigned int vf_match_csp(vf_instance_t **vfp, const unsigned int *list,
 577                           unsigned int preferred)
 578 {
 579     vf_instance_t *vf = *vfp;
 580     struct MPOpts *opts = vf->opts;
 581     const unsigned int *p;
 582     unsigned int best = 0;
 583     int ret;
 584     if ((p = list))
 585         while (*p) {
 586             ret = vf->query_format(vf, *p);
 587             mp_msg(MSGT_VFILTER, MSGL_V, "[%s] query(%s) -> %x\n",
 588                    vf->info->name, vo_format_name(*p), ret);
 589             if (ret & VFCAP_CSP_SUPPORTED_BY_HW) {
 590                 best = *p;
 591                 break;
 592             }
 593             if (ret & VFCAP_CSP_SUPPORTED && !best)
 594                 best = *p;
 595             ++p;
 596         }
 597     if (best)
 598         return best;      // bingo, they have common csp!
 599     // ok, then try with scale:
 600     if (vf->info == &vf_info_scale)
 601         return 0;     // avoid infinite recursion!
 602     vf = vf_open_filter(opts, vf, "scale", NULL);
 603     if (!vf)
 604         return 0;     // failed to init "scale"
 605     // try the preferred csp first:
 606     if (preferred && vf->query_format(vf, preferred))
 607         best = preferred;
 608     else
 609         // try the list again, now with "scaler" :
 610         if ((p = list))
 611             while (*p) {
 612                 ret = vf->query_format(vf, *p);
 613                 mp_msg(MSGT_VFILTER, MSGL_V, "[%s] query(%s) -> %x\n",
 614                        vf->info->name, vo_format_name(*p), ret);
 615                 if (ret & VFCAP_CSP_SUPPORTED_BY_HW) {
 616                     best = *p;
 617                     break;
 618                 }
 619                 if (ret & VFCAP_CSP_SUPPORTED && !best)
 620                     best = *p;
 621             ++p;
 622         }
 623     if (best)
 624         *vfp = vf;    // else uninit vf  !FIXME!
 625     return best;
 626 }
 627
 628 void vf_clone_mpi_attributes(mp_image_t *dst, mp_image_t *src)
 629 {
 630     dst->pict_type = src->pict_type;
 631     dst->fields = src->fields;
 632     dst->qscale_type = src->qscale_type;
 633     if (dst->width == src->width && dst->height == src->height) {
 634         dst->qstride = src->qstride;
 635         dst->qscale = src->qscale;
 636     }
 637 }
 638
 639 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 640 {
 641     vf->continue_buffered_image = func;
 642 }
 643
 644 // Output the next buffered image (if any) from the filter chain.
 645 // The queue could be kept as a simple stack/list instead avoiding the
 646 // looping here, but there's currently no good context variable where
 647 // that could be stored so this was easier to implement.
 648
 649 int vf_output_queued_frame(vf_instance_t *vf)
 650 {
 651     while (1) {
 652         int ret;
 653         vf_instance_t *current;
 654         vf_instance_t *last = NULL;
 655         int (*tmp)(vf_instance_t *);
 656         for (current = vf; current; current = current->next)
 657             if (current->continue_buffered_image)
 658                 last = current;
 659         if (!last)
 660             return 0;
 661         tmp = last->continue_buffered_image;
 662         last->continue_buffered_image = NULL;
 663         ret = tmp(last);
 664         if (ret)
 665             return ret;
 666     }
 667 }
 668
 669
 670 /**
 671  * \brief Video config() function wrapper
 672  *
 673  * Blocks config() calls with different size or format for filters
 674  * with VFCAP_CONSTANT
 675  *
 676  * First call is redirected to vf->config.
 677  *
 678  * In following calls, it verifies that the configuration parameters
 679  * are unchanged, and returns either success or error.
 680  *
 681  */
 682 int vf_config_wrapper(struct vf_instance *vf,
 683                       int width, int height, int d_width, int d_height,
 684                       unsigned int flags, unsigned int outfmt)
 685 {
 686     int r;
 687     if ((vf->default_caps & VFCAP_CONSTANT) && vf->fmt.have_configured) {
 688         if ((vf->fmt.orig_width != width)
 689             || (vf->fmt.orig_height != height)
 690             || (vf->fmt.orig_fmt != outfmt)) {
 691             mp_tmsg(MSGT_VFILTER, MSGL_ERR, "\nNew video file has different "
 692                     "resolution or colorspace than the previous one.\n");
 693             return 0;
 694         }
 695         return 1;
 696     }
 697     vf->fmt.have_configured = 1;
 698     vf->fmt.orig_height = height;
 699     vf->fmt.orig_width = width;
 700     vf->fmt.orig_fmt = outfmt;
 701     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 702     if (!r)
 703         vf->fmt.have_configured = 0;
 704     return r;
 705 }
 706
 707 int vf_next_config(struct vf_instance *vf,
 708                    int width, int height, int d_width, int d_height,
 709                    unsigned int voflags, unsigned int outfmt)
 710 {
 711     struct MPOpts *opts = vf->opts;
 712     int miss;
 713     int flags = vf->next->query_format(vf->next, outfmt);
 714     if (!flags) {
 715         // hmm. colorspace mismatch!!!
 716         // let's insert the 'scale' filter, it does the job for us:
 717         vf_instance_t *vf2;
 718         if (vf->next->info == &vf_info_scale)
 719             return 0;                                // scale->scale
 720         vf2 = vf_open_filter(opts, vf->next, "scale", NULL);
 721         if (!vf2)
 722             return 0;      // shouldn't happen!
 723         vf->next = vf2;
 724         flags = vf->next->query_format(vf->next, outfmt);
 725         if (!flags) {
 726             mp_tmsg(MSGT_VFILTER, MSGL_ERR, "Cannot find matching colorspace, "
 727                     "even by inserting 'scale' :(\n");
 728             return 0; // FAIL
 729         }
 730     }
 731     mp_msg(MSGT_VFILTER, MSGL_V, "REQ: flags=0x%X  req=0x%X  \n",
 732            flags, vf->default_reqs);
 733     miss = vf->default_reqs - (flags & vf->default_reqs);
 734     if (miss & VFCAP_ACCEPT_STRIDE) {
 735         // vf requires stride support but vf->next doesn't support it!
 736         // let's insert the 'expand' filter, it does the job for us:
 737         vf_instance_t *vf2 = vf_open_filter(opts, vf->next, "expand", NULL);
 738         if (!vf2)
 739             return 0;      // shouldn't happen!
 740         vf->next = vf2;
 741     }
 742     vf->next->w = width;
 743     vf->next->h = height;
 744     return vf_config_wrapper(vf->next, width, height, d_width, d_height,
 745                              voflags, outfmt);
 746 }
 747
 748 int vf_next_control(struct vf_instance *vf, int request, void *data)
 749 {
 750     return vf->next->control(vf->next, request, data);
 751 }
 752
 753 int vf_next_query_format(struct vf_instance *vf, unsigned int fmt)
 754 {
 755     int flags = vf->next->query_format(vf->next, fmt);
 756     if (flags)
 757         flags |= vf->default_caps;
 758     return flags;
 759 }
 760
 761 int vf_next_put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
 762 {
 763     return vf->next->put_image(vf->next, mpi, pts);
 764 }
 765
 766 void vf_next_draw_slice(struct vf_instance *vf, unsigned char **src,
 767                         int *stride, int w, int h, int x, int y)
 768 {
 769     if (vf->next->draw_slice) {
 770         vf->next->draw_slice(vf->next, src, stride, w, h, x, y);
 771         return;
 772     }
 773     if (!vf->dmpi) {
 774         mp_msg(MSGT_VFILTER, MSGL_ERR,
 775                "draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 776         return;
 777     }
 778     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 779         memcpy_pic(vf->dmpi->planes[0] + y * vf->dmpi->stride[0] +
 780                        vf->dmpi->bpp / 8 * x,
 781                    src[0], vf->dmpi->bpp / 8 * w, h, vf->dmpi->stride[0],
 782                    stride[0]);
 783         return;
 784     }
 785     memcpy_pic(vf->dmpi->planes[0] + y * vf->dmpi->stride[0] + x, src[0],
 786                w, h, vf->dmpi->stride[0], stride[0]);
 787     memcpy_pic(vf->dmpi->planes[1]
 788                    + (y >> vf->dmpi->chroma_y_shift) * vf->dmpi->stride[1]
 789                    + (x >> vf->dmpi->chroma_x_shift),
 790                src[1], w >> vf->dmpi->chroma_x_shift,
 791                h >> vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 792     memcpy_pic(vf->dmpi->planes[2]
 793                    + (y >> vf->dmpi->chroma_y_shift) * vf->dmpi->stride[2]
 794                    + (x >> vf->dmpi->chroma_x_shift),
 795                src[2], w >> vf->dmpi->chroma_x_shift,
 796                h >> vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 797 }
 798
 799 //============================================================================
 800
 801 vf_instance_t *append_filters(vf_instance_t *last,
 802                               struct m_obj_settings *vf_settings)
 803 {
 804     struct MPOpts *opts = last->opts;
 805     vf_instance_t *vf;
 806     int i;
 807
 808     if (vf_settings) {
 809         // We want to add them in the 'right order'
 810         for (i = 0; vf_settings[i].name; i++)
 811             /* NOP */;
 812         for (i--; i >= 0; i--) {
 813             //printf("Open filter %s\n",vf_settings[i].name);
 814             vf = vf_open_filter(opts, last, vf_settings[i].name,
 815                                 vf_settings[i].attribs);
 816             if (vf)
 817                 last = vf;
 818         }
 819     }
 820     return last;
 821 }
 822
 823 //============================================================================
 824
 825 void vf_uninit_filter(vf_instance_t *vf)
 826 {
 827     if (vf->uninit)
 828         vf->uninit(vf);
 829     free_mp_image(vf->imgctx.static_images[0]);
 830     free_mp_image(vf->imgctx.static_images[1]);
 831     free_mp_image(vf->imgctx.temp_images[0]);
 832     free_mp_image(vf->imgctx.export_images[0]);
 833     for (int i = 0; i < NUM_NUMBERED_MPI; i++)
 834         free_mp_image(vf->imgctx.numbered_images[i]);
 835     free(vf);
 836 }
 837
 838 void vf_uninit_filter_chain(vf_instance_t *vf)
 839 {
 840     while (vf) {
 841         vf_instance_t *next = vf->next;
 842         vf_uninit_filter(vf);
 843         vf = next;
 844     }
 845 }
 846
 847 void vf_detc_init_pts_buf(struct vf_detc_pts_buf *p)
 848 {
 849     p->inpts_prev = MP_NOPTS_VALUE;
 850     p->outpts_prev = MP_NOPTS_VALUE;
 851     p->lastdelta = 0;
 852 }
 853
 854 static double vf_detc_adjust_pts_internal(struct vf_detc_pts_buf *p,
 855                                           double pts, bool reset_pattern,
 856                                           bool skip_frame, double delta,
 857                                           double boundfactor_minus,
 858                                           double increasefactor,
 859                                           double boundfactor_plus)
 860 {
 861     double newpts;
 862
 863     if (pts == MP_NOPTS_VALUE)
 864         return pts;
 865
 866     if (delta <= 0) {
 867         if (p->inpts_prev == MP_NOPTS_VALUE)
 868             delta = 0;
 869         else if (pts == p->inpts_prev)
 870             delta = p->lastdelta;
 871         else
 872             delta = pts - p->inpts_prev;
 873     }
 874     p->inpts_prev = pts;
 875     p->lastdelta = delta;
 876
 877     if (skip_frame)
 878         return MP_NOPTS_VALUE;
 879
 880     /* detect bogus deltas and then passthru pts (possibly caused by seeking,
 881      * or bad input) */
 882     if (p->outpts_prev == MP_NOPTS_VALUE || reset_pattern || delta <= 0.0 ||
 883             delta >= 0.5)
 884         newpts = pts;
 885     else {
 886         // turn 5 frames into 4
 887         newpts = p->outpts_prev + delta * increasefactor;
 888
 889         // bound to input pts in a sensible way; these numbers come because we
 890         // map frames the following way when ivtc'ing:
 891         // 0/30 -> 0/24   diff=0
 892         // 1/30 -> 1/24   diff=1/120
 893         // 2/30 -> -
 894         // 3/30 -> 2/24   diff=-1/60
 895         // 4/30 -> 3/24   diff=-1/120
 896         if (newpts < pts - delta * boundfactor_minus)
 897             newpts = pts - delta * boundfactor_minus;
 898         if (newpts > pts + delta * boundfactor_plus)
 899             newpts = pts + delta * boundfactor_plus;
 900         if (newpts < p->outpts_prev)
 901             newpts = p->outpts_prev;  // damage control
 902     }
 903     p->outpts_prev = newpts;
 904
 905     return newpts;
 906 }
 907
 908 double vf_detc_adjust_pts(struct vf_detc_pts_buf *p, double pts,
 909                           bool reset_pattern, bool skip_frame)
 910 {
 911     // standard telecine (see above)
 912     return vf_detc_adjust_pts_internal(p, pts, reset_pattern, skip_frame,
 913                                        0, 0.5, 1.25, 0.25);
 914 }
 915
 916 double vf_softpulldown_adjust_pts(struct vf_detc_pts_buf *p, double pts,
 917                                   bool reset_pattern, bool skip_frame,
 918                                   int last_frame_duration)
 919 {
 920     // for the softpulldown filter we get:
 921     // 0/60 -> 0/30
 922     // 2/60 -> 1/30
 923     // 5/60 -> 2/30
 924     // 7/60 -> 3/30, 4/30
 925     return vf_detc_adjust_pts_internal(p, pts, reset_pattern, skip_frame,
 926                                        0, 1.0 / last_frame_duration,
 927                                        2.0 / last_frame_duration,
 928                                        1.0 / last_frame_duration);
 929 }