libmpcodecs/vf_ass.c

   1 // -*- c-basic-offset: 8; indent-tabs-mode: t -*-
   2 // vim:ts=8:sw=8:noet:ai:
   3 /*
   4  * Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
   5  *
   6  * This file is part of MPlayer.
   7  *
   8  * MPlayer is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * MPlayer is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #include "config.h"
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <inttypes.h>
  29 #include <assert.h>
  30
  31 #include "config.h"
  32 #include "mp_msg.h"
  33 #include "help_mp.h"
  34
  35 #include "img_format.h"
  36 #include "mp_image.h"
  37 #include "vf.h"
  38
  39 #include "libvo/fastmemcpy.h"
  40
  41 #include "m_option.h"
  42 #include "m_struct.h"
  43
  44 #include "libass/ass.h"
  45 #include "libass/ass_mp.h"
  46
  47 #define _r(c)  ((c)>>24)
  48 #define _g(c)  (((c)>>16)&0xFF)
  49 #define _b(c)  (((c)>>8)&0xFF)
  50 #define _a(c)  ((c)&0xFF)
  51 #define rgba2y(c)  ( (( 263*_r(c)  + 516*_g(c) + 100*_b(c)) >> 10) + 16  )
  52 #define rgba2u(c)  ( ((-152*_r(c) - 298*_g(c) + 450*_b(c)) >> 10) + 128 )
  53 #define rgba2v(c)  ( (( 450*_r(c) - 376*_g(c) -  73*_b(c)) >> 10) + 128 )
  54
  55
  56 static const struct vf_priv_s {
  57         int outh, outw;
  58
  59         unsigned int outfmt;
  60
  61         // 1 = auto-added filter: insert only if chain does not support EOSD already
  62         // 0 = insert always
  63         int auto_insert;
  64
  65         ass_renderer_t* ass_priv;
  66
  67         unsigned char* planes[3];
  68         unsigned char* dirty_rows;
  69 } vf_priv_dflt;
  70
  71 extern int opt_screen_size_x;
  72 extern int opt_screen_size_y;
  73
  74 extern ass_track_t* ass_track;
  75 extern float sub_delay;
  76 extern int sub_visibility;
  77
  78 static int config(struct vf_instance_s* vf,
  79         int width, int height, int d_width, int d_height,
  80         unsigned int flags, unsigned int outfmt)
  81 {
  82         if (outfmt == IMGFMT_IF09) return 0;
  83
  84         vf->priv->outh = height + ass_top_margin + ass_bottom_margin;
  85         vf->priv->outw = width;
  86
  87         if(!opt_screen_size_x && !opt_screen_size_y){
  88                 d_width = d_width * vf->priv->outw / width;
  89                 d_height = d_height * vf->priv->outh / height;
  90         }
  91
  92         vf->priv->planes[1] = malloc(vf->priv->outw * vf->priv->outh);
  93         vf->priv->planes[2] = malloc(vf->priv->outw * vf->priv->outh);
  94         vf->priv->dirty_rows = malloc(vf->priv->outh);
  95
  96         if (vf->priv->ass_priv) {
  97                 ass_configure(vf->priv->ass_priv, vf->priv->outw, vf->priv->outh, 0);
  98                 ass_set_aspect_ratio(vf->priv->ass_priv, ((double)d_width) / d_height);
  99         }
 100
 101         return vf_next_config(vf, vf->priv->outw, vf->priv->outh, d_width, d_height, flags, outfmt);
 102 }
 103
 104 static void get_image(struct vf_instance_s* vf, mp_image_t *mpi)
 105 {
 106         if(mpi->type == MP_IMGTYPE_IPB) return;
 107         if(mpi->flags & MP_IMGFLAG_PRESERVE) return;
 108         if(mpi->imgfmt != vf->priv->outfmt) return; // colorspace differ
 109
 110         // width never changes, always try full DR
 111         mpi->priv = vf->dmpi = vf_get_image(vf->next, mpi->imgfmt,
 112                         mpi->type, mpi->flags | MP_IMGFLAG_READABLE,
 113                         vf->priv->outw,
 114                         vf->priv->outh);
 115
 116         if((vf->dmpi->flags & MP_IMGFLAG_DRAW_CALLBACK) &&
 117                         !(vf->dmpi->flags & MP_IMGFLAG_DIRECT)){
 118                 mp_msg(MSGT_ASS, MSGL_INFO, MSGTR_MPCODECS_FullDRNotPossible);
 119                 return;
 120         }
 121
 122         // set up mpi as a cropped-down image of dmpi:
 123         if(mpi->flags&MP_IMGFLAG_PLANAR){
 124                 mpi->planes[0]=vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0];
 125                 mpi->planes[1]=vf->dmpi->planes[1] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[1];
 126                 mpi->planes[2]=vf->dmpi->planes[2] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[2];
 127                 mpi->stride[1]=vf->dmpi->stride[1];
 128                 mpi->stride[2]=vf->dmpi->stride[2];
 129         } else {
 130                 mpi->planes[0]=vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0];
 131         }
 132         mpi->stride[0]=vf->dmpi->stride[0];
 133         mpi->width=vf->dmpi->width;
 134         mpi->flags|=MP_IMGFLAG_DIRECT;
 135         mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 136 //      vf->dmpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 137 }
 138
 139 static void blank(mp_image_t *mpi, int y1, int y2)
 140 {
 141         int color[3] = {16, 128, 128}; // black (YUV)
 142         int y;
 143         unsigned char* dst;
 144         int chroma_rows = (y2 - y1) >> mpi->chroma_y_shift;
 145
 146         dst = mpi->planes[0] + y1 * mpi->stride[0];
 147         for (y = 0; y < y2 - y1; ++y) {
 148                 memset(dst, color[0], mpi->w);
 149                 dst += mpi->stride[0];
 150         }
 151         dst = mpi->planes[1] + (y1 >> mpi->chroma_y_shift) * mpi->stride[1];
 152         for (y = 0; y < chroma_rows ; ++y) {
 153                 memset(dst, color[1], mpi->chroma_width);
 154                 dst += mpi->stride[1];
 155         }
 156         dst = mpi->planes[2] + (y1 >> mpi->chroma_y_shift) * mpi->stride[2];
 157         for (y = 0; y < chroma_rows ; ++y) {
 158                 memset(dst, color[2], mpi->chroma_width);
 159                 dst += mpi->stride[2];
 160         }
 161 }
 162
 163 static int prepare_image(struct vf_instance_s* vf, mp_image_t *mpi)
 164 {
 165         if(mpi->flags&MP_IMGFLAG_DIRECT || mpi->flags&MP_IMGFLAG_DRAW_CALLBACK){
 166                 vf->dmpi = mpi->priv;
 167                 if (!vf->dmpi) { mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_MPCODECS_FunWhydowegetNULL); return 0; }
 168                 mpi->priv = NULL;
 169                 // we've used DR, so we're ready...
 170                 if (ass_top_margin)
 171                         blank(vf->dmpi, 0, ass_top_margin);
 172                 if (ass_bottom_margin)
 173                         blank(vf->dmpi, vf->priv->outh - ass_bottom_margin, vf->priv->outh);
 174                 if(!(mpi->flags&MP_IMGFLAG_PLANAR))
 175                         vf->dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
 176                 return 0;
 177         }
 178
 179         // hope we'll get DR buffer:
 180         vf->dmpi = vf_get_image(vf->next, vf->priv->outfmt,
 181                         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_READABLE,
 182                         vf->priv->outw, vf->priv->outh);
 183
 184         // copy mpi->dmpi...
 185         if(mpi->flags&MP_IMGFLAG_PLANAR){
 186                 memcpy_pic(vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0],
 187                                 mpi->planes[0], mpi->w, mpi->h,
 188                                 vf->dmpi->stride[0], mpi->stride[0]);
 189                 memcpy_pic(vf->dmpi->planes[1] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[1],
 190                                 mpi->planes[1], mpi->w >> mpi->chroma_x_shift, mpi->h >> mpi->chroma_y_shift,
 191                                 vf->dmpi->stride[1], mpi->stride[1]);
 192                 memcpy_pic(vf->dmpi->planes[2] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[2],
 193                                 mpi->planes[2], mpi->w >> mpi->chroma_x_shift, mpi->h >> mpi->chroma_y_shift,
 194                                 vf->dmpi->stride[2], mpi->stride[2]);
 195         } else {
 196                 memcpy_pic(vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0],
 197                                 mpi->planes[0], mpi->w*(vf->dmpi->bpp/8), mpi->h,
 198                                 vf->dmpi->stride[0], mpi->stride[0]);
 199                 vf->dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
 200         }
 201         if (ass_top_margin)
 202                 blank(vf->dmpi, 0, ass_top_margin);
 203         if (ass_bottom_margin)
 204                 blank(vf->dmpi, vf->priv->outh - ass_bottom_margin, vf->priv->outh);
 205         return 0;
 206 }
 207
 208 /**
 209  * \brief Copy specified rows from render_context.dmpi to render_context.planes, upsampling to 4:4:4
 210  */
 211 static void copy_from_image(struct vf_instance_s* vf, int first_row, int last_row)
 212 {
 213         int pl;
 214         int i, j, k;
 215         unsigned char val;
 216         int chroma_rows;
 217
 218         first_row -= (first_row % 2);
 219         last_row += (last_row % 2);
 220         chroma_rows = (last_row - first_row) / 2;
 221
 222         for (pl = 1; pl < 3; ++pl) {
 223                 int dst_stride = vf->priv->outw;
 224                 int src_stride = vf->dmpi->stride[pl];
 225
 226                 unsigned char* src = vf->dmpi->planes[pl] + (first_row/2) * src_stride;
 227                 unsigned char* dst = vf->priv->planes[pl] + first_row * dst_stride;
 228                 unsigned char* dst_next = dst + dst_stride;
 229                 for(i = 0; i < chroma_rows; ++i)
 230                 {
 231                         if ((vf->priv->dirty_rows[first_row + i*2] == 0) ||
 232                                 (vf->priv->dirty_rows[first_row + i*2 + 1] == 0)) {
 233                                 for (j = 0, k = 0; j < vf->dmpi->chroma_width; ++j, k+=2) {
 234                                         val = *(src + j);
 235                                         *(dst + k) = val;
 236                                         *(dst + k + 1) = val;
 237                                         *(dst_next + k) = val;
 238                                         *(dst_next + k + 1) = val;
 239                                 }
 240                         }
 241                         src += src_stride;
 242                         dst = dst_next + dst_stride;
 243                         dst_next = dst + dst_stride;
 244                 }
 245         }
 246         for (i = first_row; i < last_row; ++i)
 247                 vf->priv->dirty_rows[i] = 1;
 248 }
 249
 250 /**
 251  * \brief Copy all previously copied rows back to render_context.dmpi
 252  */
 253 static void copy_to_image(struct vf_instance_s* vf)
 254 {
 255         int pl;
 256         int i, j, k;
 257         for (pl = 1; pl < 3; ++pl) {
 258                 int dst_stride = vf->dmpi->stride[pl];
 259                 int src_stride = vf->priv->outw;
 260
 261                 unsigned char* dst = vf->dmpi->planes[pl];
 262                 unsigned char* src = vf->priv->planes[pl];
 263                 unsigned char* src_next = vf->priv->planes[pl] + src_stride;
 264                 for(i = 0; i < vf->dmpi->chroma_height; ++i)
 265                 {
 266                         if ((vf->priv->dirty_rows[i*2] == 1)) {
 267                                 assert(vf->priv->dirty_rows[i*2 + 1] == 1);
 268                                 for (j = 0, k = 0; j < vf->dmpi->chroma_width; ++j, k+=2) {
 269                                         unsigned val = 0;
 270                                         val += *(src + k);
 271                                         val += *(src + k + 1);
 272                                         val += *(src_next + k);
 273                                         val += *(src_next + k + 1);
 274                                         *(dst + j) = val >> 2;
 275                                 }
 276                         }
 277                         dst += dst_stride;
 278                         src = src_next + src_stride;
 279                         src_next = src + src_stride;
 280                 }
 281         }
 282 }
 283
 284 static void my_draw_bitmap(struct vf_instance_s* vf, unsigned char* bitmap, int bitmap_w, int bitmap_h, int stride, int dst_x, int dst_y, unsigned color)
 285 {
 286         unsigned char y = rgba2y(color);
 287         unsigned char u = rgba2u(color);
 288         unsigned char v = rgba2v(color);
 289         unsigned char opacity = 255 - _a(color);
 290         unsigned char *src, *dsty, *dstu, *dstv;
 291         int i, j;
 292         mp_image_t* dmpi = vf->dmpi;
 293
 294         src = bitmap;
 295         dsty = dmpi->planes[0] + dst_x + dst_y * dmpi->stride[0];
 296         dstu = vf->priv->planes[1] + dst_x + dst_y * vf->priv->outw;
 297         dstv = vf->priv->planes[2] + dst_x + dst_y * vf->priv->outw;
 298         for (i = 0; i < bitmap_h; ++i) {
 299                 for (j = 0; j < bitmap_w; ++j) {
 300                         unsigned k = ((unsigned)src[j]) * opacity / 255;
 301                         dsty[j] = (k*y + (255-k)*dsty[j]) / 255;
 302                         dstu[j] = (k*u + (255-k)*dstu[j]) / 255;
 303                         dstv[j] = (k*v + (255-k)*dstv[j]) / 255;
 304                 }
 305                 src += stride;
 306                 dsty += dmpi->stride[0];
 307                 dstu += vf->priv->outw;
 308                 dstv += vf->priv->outw;
 309         }
 310 }
 311
 312 static int render_frame(struct vf_instance_s* vf, mp_image_t *mpi, const ass_image_t* img)
 313 {
 314         if (img) {
 315                 memset(vf->priv->dirty_rows, 0, vf->priv->outh); // reset dirty rows
 316                 while (img) {
 317                         copy_from_image(vf, img->dst_y, img->dst_y + img->h);
 318                         my_draw_bitmap(vf, img->bitmap, img->w, img->h, img->stride,
 319                                         img->dst_x, img->dst_y, img->color);
 320                         img = img->next;
 321                 }
 322                 copy_to_image(vf);
 323         }
 324         return 0;
 325 }
 326
 327 static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts)
 328 {
 329         ass_image_t* images = 0;
 330         if (sub_visibility && vf->priv->ass_priv && ass_track && (pts != MP_NOPTS_VALUE))
 331                 images = ass_mp_render_frame(vf->priv->ass_priv, ass_track, (pts+sub_delay) * 1000 + .5, NULL);
 332
 333         prepare_image(vf, mpi);
 334         if (images) render_frame(vf, mpi, images);
 335
 336         return vf_next_put_image(vf, vf->dmpi, pts);
 337 }
 338
 339 static int query_format(struct vf_instance_s* vf, unsigned int fmt)
 340 {
 341         switch(fmt){
 342         case IMGFMT_YV12:
 343         case IMGFMT_I420:
 344         case IMGFMT_IYUV:
 345                 return vf_next_query_format(vf, vf->priv->outfmt);
 346         }
 347         return 0;
 348 }
 349
 350 static int control(vf_instance_t *vf, int request, void *data)
 351 {
 352         switch (request) {
 353         case VFCTRL_INIT_EOSD:
 354                 vf->priv->ass_priv = ass_renderer_init((ass_library_t*)data);
 355                 if (!vf->priv->ass_priv) return CONTROL_FALSE;
 356                 ass_configure_fonts(vf->priv->ass_priv);
 357                 return CONTROL_TRUE;
 358         case VFCTRL_DRAW_EOSD:
 359                 if (vf->priv->ass_priv) return CONTROL_TRUE;
 360                 break;
 361         }
 362         return vf_next_control(vf, request, data);
 363 }
 364
 365 static void uninit(struct vf_instance_s* vf)
 366 {
 367         if (vf->priv->ass_priv)
 368                 ass_renderer_done(vf->priv->ass_priv);
 369         if (vf->priv->planes[1])
 370                 free(vf->priv->planes[1]);
 371         if (vf->priv->planes[2])
 372                 free(vf->priv->planes[2]);
 373         if (vf->priv->dirty_rows)
 374                 free(vf->priv->dirty_rows);
 375 }
 376
 377 static const unsigned int fmt_list[]={
 378         IMGFMT_YV12,
 379         IMGFMT_I420,
 380         IMGFMT_IYUV,
 381         0
 382 };
 383
 384 static int open(vf_instance_t *vf, char* args)
 385 {
 386         int flags;
 387         vf->priv->outfmt = vf_match_csp(&vf->next,fmt_list,IMGFMT_YV12);
 388         if (vf->priv->outfmt)
 389                 flags = vf_next_query_format(vf, vf->priv->outfmt);
 390         if (!vf->priv->outfmt || (vf->priv->auto_insert && flags&VFCAP_EOSD))
 391         {
 392                 uninit(vf);
 393                 return 0;
 394         }
 395
 396         if (vf->priv->auto_insert)
 397                 mp_msg(MSGT_ASS, MSGL_INFO, "[ass] auto-open\n");
 398
 399         vf->config = config;
 400         vf->query_format = query_format;
 401         vf->uninit = uninit;
 402         vf->control = control;
 403         vf->get_image = get_image;
 404         vf->put_image = put_image;
 405         vf->default_caps=VFCAP_EOSD;
 406         return 1;
 407 }
 408
 409 #define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
 410 static const m_option_t vf_opts_fields[] = {
 411         {"auto", ST_OFF(auto_insert), CONF_TYPE_FLAG, 0 , 0, 1, NULL},
 412         { NULL, NULL, 0, 0, 0, 0,  NULL }
 413 };
 414
 415 static const m_struct_t vf_opts = {
 416         "ass",
 417         sizeof(struct vf_priv_s),
 418         &vf_priv_dflt,
 419         vf_opts_fields
 420 };
 421
 422 const vf_info_t vf_info_ass = {
 423         "Render ASS/SSA subtitles",
 424         "ass",
 425         "Evgeniy Stepanov",
 426         "",
 427         open,
 428         &vf_opts
 429 };
 430