libmpcodecs/vd_xvid4.c

   1 /*
   2  * - XviD 1.x decoder module for mplayer/mencoder -
   3  *
   4  * Copyright(C) 2003      Marco Belli <elcabesa@inwind.it>
   5  *              2003-2004 Edouard Gomez <ed.gomez@free.fr>
   6  *
   7  * This file is part of MPlayer.
   8  *
   9  * MPlayer is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * MPlayer is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22  */
  23
  24 /*****************************************************************************
  25  * Includes
  26  ****************************************************************************/
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30
  31 #include "config.h"
  32 #include "mp_msg.h"
  33
  34 #include "vd_internal.h"
  35 #include "m_option.h"
  36
  37 #include <xvid.h>
  38
  39 /*****************************************************************************
  40  * Configuration options
  41  ****************************************************************************/
  42
  43 static int do_dr2 = 1;
  44 static int filmeffect = 0;
  45 static int lumadeblock = 0;
  46 static int chromadeblock = 0;
  47 static int lumadering = 0;
  48 static int chromadering = 0;
  49
  50 const m_option_t xvid_dec_opts[] = {
  51         { "dr2", &do_dr2, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  52         { "nodr2", &do_dr2, CONF_TYPE_FLAG, 0, 1, 0, NULL},
  53         { "filmeffect", &filmeffect, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  54         { "deblock-luma", &lumadeblock, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  55         { "deblock-chroma", &chromadeblock, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  56         { "dering-luma", &lumadering, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  57         { "dering-chroma", &chromadering, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  58         {NULL, NULL, 0, 0, 0, 0, NULL}
  59 };
  60
  61 /*****************************************************************************
  62  * Module private data
  63  ****************************************************************************/
  64
  65 typedef struct {
  66         int cs;
  67         unsigned char img_type;
  68         void* hdl;
  69         mp_image_t* mpi;
  70         int vo_initialized;
  71 } priv_t;
  72
  73 /*****************************************************************************
  74  * Module function helpers
  75  ****************************************************************************/
  76
  77 static float stats2aspect(xvid_dec_stats_t *stats);
  78
  79 /*****************************************************************************
  80  * Video decoder API function definitions
  81  ****************************************************************************/
  82
  83 /*============================================================================
  84  * control - to set/get/query special features/parameters
  85  *==========================================================================*/
  86
  87 static int control(sh_video_t *sh,int cmd,void* arg,...)
  88 {
  89         return CONTROL_UNKNOWN;
  90 }
  91
  92 /*============================================================================
  93  * init - initialize the codec
  94  *==========================================================================*/
  95
  96 static int init(sh_video_t *sh)
  97 {
  98         xvid_gbl_info_t xvid_gbl_info;
  99         xvid_gbl_init_t xvid_ini;
 100         xvid_dec_create_t dec_p;
 101         priv_t* p;
 102         int cs;
 103
 104         memset(&xvid_gbl_info, 0, sizeof(xvid_gbl_info_t));
 105         xvid_gbl_info.version = XVID_VERSION;
 106
 107         memset(&xvid_ini, 0, sizeof(xvid_gbl_init_t));
 108         xvid_ini.version = XVID_VERSION;
 109
 110         memset(&dec_p, 0, sizeof(xvid_dec_create_t));
 111         dec_p.version = XVID_VERSION;
 112
 113
 114         switch(sh->codec->outfmt[sh->outfmtidx]){
 115         case IMGFMT_YV12:
 116                 /* We will use our own buffers, this speeds decoding avoiding
 117                  * frame memcpy's overhead */
 118                 cs = (do_dr2)?XVID_CSP_INTERNAL:XVID_CSP_USER;
 119                 break;
 120         case IMGFMT_YUY2:
 121                 cs = XVID_CSP_YUY2;
 122                 break;
 123         case IMGFMT_UYVY:
 124                 cs = XVID_CSP_UYVY;
 125                 break;
 126         case IMGFMT_I420:
 127         case IMGFMT_IYUV:
 128                 /* We will use our own buffers, this speeds decoding avoiding
 129                  * frame memcpy's overhead */
 130                 cs = (do_dr2)?XVID_CSP_INTERNAL:XVID_CSP_USER;
 131                 break;
 132         case IMGFMT_BGR15:
 133                 cs = XVID_CSP_RGB555;
 134                 break;
 135         case IMGFMT_BGR16:
 136                 cs = XVID_CSP_RGB565;
 137                 break;
 138         case IMGFMT_BGR32:
 139                 cs = XVID_CSP_BGRA;
 140                 break;
 141         case IMGFMT_YVYU:
 142                 cs = XVID_CSP_YVYU;
 143                 break;
 144         default:
 145                 mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Unsupported out_fmt: 0x%X\n",
 146                        sh->codec->outfmt[sh->outfmtidx]);
 147                 return 0;
 148         }
 149
 150         /* Gather some information about the host library */
 151         if(xvid_global(NULL, XVID_GBL_INFO, &xvid_gbl_info, NULL) < 0) {
 152                 mp_msg(MSGT_MENCODER,MSGL_INFO, "xvid: could not get information about the library\n");
 153         } else {
 154                 mp_msg(MSGT_MENCODER,MSGL_INFO, "xvid: using library version %d.%d.%d (build %s)\n",
 155                        XVID_VERSION_MAJOR(xvid_gbl_info.actual_version),
 156                        XVID_VERSION_MINOR(xvid_gbl_info.actual_version),
 157                        XVID_VERSION_PATCH(xvid_gbl_info.actual_version),
 158                        xvid_gbl_info.build);
 159         }
 160
 161         /* Initialize the xvidcore library */
 162         if(xvid_global(NULL, XVID_GBL_INIT, &xvid_ini, NULL))
 163                 return 0;
 164
 165         /* We use 0 width and height so xvidcore will resize its buffers
 166          * if required. That allows this vd plugin to do resize on first
 167          * VOL encountered (don't trust containers' width and height) */
 168         dec_p.width = 0;
 169         dec_p.height =  0;
 170
 171         /* Get a decoder instance */
 172         if(xvid_decore(0, XVID_DEC_CREATE, &dec_p, NULL)<0) {
 173                 mp_msg(MSGT_DECVIDEO, MSGL_ERR, "XviD init failed\n");
 174                 return 0;
 175         }
 176
 177         p = malloc(sizeof(priv_t));
 178         p->cs = cs;
 179         p->hdl = dec_p.handle;
 180         p->vo_initialized = 0;
 181         sh->context = p;
 182
 183         switch(cs) {
 184         case XVID_CSP_INTERNAL:
 185                 p->img_type = MP_IMGTYPE_EXPORT;
 186                 break;
 187         case XVID_CSP_USER:
 188                 p->img_type = MP_IMGTYPE_STATIC;
 189                 break;
 190         default:
 191                 p->img_type = MP_IMGTYPE_TEMP;
 192                 break;
 193         }
 194
 195         return 1;
 196 }
 197
 198 /*============================================================================
 199  * uninit - close the codec
 200  *==========================================================================*/
 201
 202 static void uninit(sh_video_t *sh){
 203         priv_t* p = sh->context;
 204         if(!p)
 205                 return;
 206         xvid_decore(p->hdl,XVID_DEC_DESTROY, NULL, NULL);
 207         free(p);
 208 }
 209
 210 /*============================================================================
 211  * decode - decode a frame from stream
 212  *==========================================================================*/
 213
 214 static mp_image_t* decode(sh_video_t *sh, void* data, int len, int flags)
 215 {
 216         xvid_dec_frame_t dec;
 217         xvid_dec_stats_t stats;
 218         mp_image_t* mpi = NULL;
 219
 220         priv_t* p = sh->context;
 221
 222
 223         if(!data || len <= 0)
 224                 return NULL;
 225
 226         memset(&dec,0,sizeof(xvid_dec_frame_t));
 227         memset(&stats, 0, sizeof(xvid_dec_stats_t));
 228         dec.version = XVID_VERSION;
 229         stats.version = XVID_VERSION;
 230
 231         dec.bitstream = data;
 232         dec.length = len;
 233
 234         dec.general |= XVID_LOWDELAY
 235         /* XXX: if lowdelay is unset, and xvidcore internal buffers are
 236          *      used => crash. MUST FIX */
 237                 | (filmeffect ? XVID_FILMEFFECT : 0 )
 238                 | (lumadeblock ? XVID_DEBLOCKY : 0 )
 239                 | (chromadeblock ? XVID_DEBLOCKUV : 0 );
 240 #if XVID_API >= XVID_MAKE_API(4,1)
 241         dec.general |= (lumadering ? XVID_DEBLOCKY|XVID_DERINGY : 0 );
 242         dec.general |= (chromadering ? XVID_DEBLOCKUV|XVID_DERINGUV : 0 );
 243 #endif
 244         dec.output.csp = p->cs;
 245
 246         /* Decoding loop because xvidcore may return VOL information for
 247          * on the fly buffer resizing. In that case we must decode VOL,
 248          * init VO, then decode the frame */
 249         do {
 250                 int consumed;
 251
 252                 /* If we don't know frame size yet, don't even try to request
 253                  * a buffer, we must loop until we find a VOL, so VO plugin
 254                  * is initialized and we can obviously output something */
 255                 if (p->vo_initialized) {
 256                         mpi = mpcodecs_get_image(sh, p->img_type,
 257                                         MP_IMGFLAG_ACCEPT_STRIDE,
 258                                         sh->disp_w, sh->disp_h);
 259
 260                         if(p->cs != XVID_CSP_INTERNAL) {
 261                                 dec.output.plane[0] = mpi->planes[0];
 262                                 dec.output.plane[1] = mpi->planes[1];
 263                                 dec.output.plane[2] = mpi->planes[2];
 264
 265                                 dec.output.stride[0] = mpi->stride[0];
 266                                 dec.output.stride[1] = mpi->stride[1];
 267                                 dec.output.stride[2] = mpi->stride[2];
 268                         }
 269                 }
 270
 271                 /* Decode data */
 272                 consumed = xvid_decore(p->hdl, XVID_DEC_DECODE, &dec, &stats);
 273                 if (consumed < 0) {
 274                         mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Decoding error\n");
 275                         return NULL;
 276                 }
 277
 278                 /* Found a VOL information stats, if VO plugin is not initialized
 279                  * yet then do it now */
 280                 if (stats.type == XVID_TYPE_VOL && !p->vo_initialized) {
 281                         sh->aspect = stats2aspect(&stats);
 282                         if(!mpcodecs_config_vo(sh, stats.data.vol.width, stats.data.vol.height, IMGFMT_YV12))
 283                                 return NULL;
 284
 285                         /* Don't take this path twice */
 286                         p->vo_initialized = !p->vo_initialized;
 287                 }
 288
 289                 /* Don't forget to update buffer position and buffer length */
 290                 dec.bitstream += consumed;
 291                 dec.length -= consumed;
 292         } while ((stats.type == XVID_TYPE_VOL || stats.type == XVID_TYPE_NOTHING) && dec.length > 0);
 293
 294         /* There are two ways to get out of the decoding loop:
 295          *  - a frame has been returned
 296          *  - no more data in buffer and no frames returned */
 297
 298         /* If mpi is NULL, it proves nothing has been returned by the decoder
 299          * so don't try to display internal buffers. */
 300         if (mpi != NULL && p->cs == XVID_CSP_INTERNAL) {
 301                 mpi->planes[0] = dec.output.plane[0];
 302                 mpi->planes[1] = dec.output.plane[1];
 303                 mpi->planes[2] = dec.output.plane[2];
 304
 305                 mpi->stride[0] = dec.output.stride[0];
 306                 mpi->stride[1] = dec.output.stride[1];
 307                 mpi->stride[2] = dec.output.stride[2];
 308         }
 309
 310         /* If we got out the decoding loop because the buffer was empty and there was nothing
 311          * to output yet, then just return NULL */
 312         return (stats.type == XVID_TYPE_NOTHING) ? NULL : mpi;
 313 }
 314
 315 /*****************************************************************************
 316  * Helper functions
 317  ****************************************************************************/
 318
 319 /* Returns DAR value according to VOL's informations contained in stats
 320  * param */
 321 static float stats2aspect(xvid_dec_stats_t *stats)
 322 {
 323         if (stats->type == XVID_TYPE_VOL) {
 324                 float wpar;
 325                 float hpar;
 326                 float dar;
 327
 328                 /* MPEG4 strem stores PAR (Pixel Aspect Ratio), mplayer uses
 329                  * DAR (Display Aspect Ratio)
 330                  *
 331                  * Both are related thanks to the equation:
 332                  *            width
 333                  *      DAR = ----- x PAR
 334                  *            height
 335                  *
 336                  * As MPEG4 is so well designed (*cough*), VOL header carries
 337                  * both informations together -- lucky eh ? */
 338
 339                 switch (stats->data.vol.par) {
 340                 case XVID_PAR_11_VGA: /* 1:1 vga (square), default if supplied PAR is not a valid value */
 341                         wpar = hpar = 1.0f;
 342                         break;
 343                 case XVID_PAR_43_PAL: /* 4:3 pal (12:11 625-line) */
 344                         wpar = 12;
 345                         hpar = 11;
 346                         break;
 347                 case XVID_PAR_43_NTSC: /* 4:3 ntsc (10:11 525-line) */
 348                         wpar = 10;
 349                         hpar = 11;
 350                         break;
 351                 case XVID_PAR_169_PAL: /* 16:9 pal (16:11 625-line) */
 352                         wpar = 16;
 353                         hpar = 11;
 354                         break;
 355                 case XVID_PAR_169_NTSC: /* 16:9 ntsc (40:33 525-line) */
 356                         wpar = 40;
 357                         hpar = 33;
 358                         break;
 359                 case XVID_PAR_EXT: /* extended par; use par_width, par_height */
 360                         wpar = stats->data.vol.par_width;
 361                         hpar = stats->data.vol.par_height;
 362                         break;
 363                 default:
 364                         wpar = hpar = 1.0f;
 365                         break;
 366                 }
 367
 368                 dar  = ((float)stats->data.vol.width*wpar);
 369                 dar /= ((float)stats->data.vol.height*hpar);
 370
 371                 return dar;
 372         }
 373
 374         return 0.0f;
 375 }
 376
 377 /*****************************************************************************
 378  * Module structure definition
 379  ****************************************************************************/
 380
 381 static const vd_info_t info =
 382 {
 383         "XviD 1.0 decoder",
 384         "xvid",
 385         "Marco Belli <elcabesa@inwind.it>, Edouard Gomez <ed.gomez@free.fr>",
 386         "Marco Belli <elcabesa@inwind.it>, Edouard Gomez <ed.gomez@free.fr>",
 387         "No Comment"
 388 };
 389
 390 LIBVD_EXTERN(xvid)
 391
 392 /* Please do not change that tag comment.
 393  * arch-tag: b7d654a5-76ea-4768-9713-2c791567fe7d mplayer xvid decoder module */