libmpcodecs/vd_xanim.c

   1 /*
   2  * XAnim Video Codec DLL support
   3  *
   4  * It partly emulates the Xanim codebase.
   5  * You need the -rdynamic flag to use this with gcc.
   6  *
   7  * Copyright (C) 2001-2002 Alex Beregszaszi
   8  *                         Arpad Gereoffy <arpi@thot.banki.hu>
   9  *
  10  * This file is part of MPlayer.
  11  *
  12  * MPlayer is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * MPlayer is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License along
  23  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  24  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h> /* strerror */
  30
  31 #include "config.h"
  32
  33 #include "mp_msg.h"
  34
  35 #include "vd_internal.h"
  36
  37 static const vd_info_t info = {
  38         "XAnim codecs",
  39         "xanim",
  40         "A'rpi & Alex",
  41         "Xanim (http://xanim.va.pubnix.com/)",
  42         "binary codec plugins"
  43 };
  44
  45 LIBVD_EXTERN(xanim)
  46
  47 #ifdef __FreeBSD__
  48 #include <unistd.h>
  49 #endif
  50
  51 #include <dlfcn.h> /* dlsym, dlopen, dlclose */
  52 #include <stdarg.h> /* va_alist, va_start, va_end */
  53 #include <errno.h> /* strerror, errno */
  54
  55 #include "mp_msg.h"
  56 #include "mpbswap.h"
  57
  58 #include "osdep/timer.h"
  59
  60 #if 0
  61 /* this should be removed */
  62 #ifndef RTLD_NOW
  63 #define RLTD_NOW 2
  64 #endif
  65 #ifndef RTLD_LAZY
  66 #define RLTD_LAZY 1
  67 #endif
  68 #ifndef RTLD_GLOBAL
  69 #define RLTD_GLOBAL 256
  70 #endif
  71 #endif
  72
  73 typedef struct
  74 {
  75   unsigned int          what;
  76   unsigned int          id;
  77   int                   (*iq_func)();   /* init/query function */
  78   unsigned int          (*dec_func)();  /* opt decode function */
  79 } XAVID_FUNC_HDR;
  80
  81 #define XAVID_WHAT_NO_MORE      0x0000
  82 #define XAVID_AVI_QUERY         0x0001
  83 #define XAVID_QT_QUERY          0x0002
  84 #define XAVID_DEC_FUNC          0x0100
  85
  86 #define XAVID_API_REV           0x0003
  87
  88 typedef struct
  89 {
  90   unsigned int          api_rev;
  91   char                  *desc;
  92   char                  *rev;
  93   char                  *copyright;
  94   char                  *mod_author;
  95   char                  *authors;
  96   unsigned int          num_funcs;
  97   XAVID_FUNC_HDR        *funcs;
  98 } XAVID_MOD_HDR;
  99
 100 /* XA CODEC .. */
 101 typedef struct
 102 {
 103   void                  *anim_hdr;
 104   unsigned int          compression;
 105   unsigned int          x, y;
 106   unsigned int          depth;
 107   void                  *extra;
 108   unsigned int          xapi_rev;
 109   unsigned int          (*decoder)();
 110   char                  *description;
 111   unsigned int          avi_ctab_flag;
 112   unsigned int          (*avi_read_ext)();
 113 } XA_CODEC_HDR;
 114
 115 #define CODEC_SUPPORTED 1
 116 #define CODEC_UNKNOWN 0
 117 #define CODEC_UNSUPPORTED -1
 118
 119 /* fuckin colormap structures for xanim */
 120 typedef struct
 121 {
 122   unsigned short        red;
 123   unsigned short        green;
 124   unsigned short        blue;
 125   unsigned short        gray;
 126 } ColorReg;
 127
 128 typedef struct XA_ACTION_STRUCT
 129 {
 130   int                   type;
 131   int                   cmap_rev;
 132   unsigned char         *data;
 133   struct XA_ACTION_STRUCT *next;
 134   struct XA_CHDR_STRUCT *chdr;
 135   ColorReg              *h_cmap;
 136   unsigned int          *map;
 137   struct XA_ACTION_STRUCT *next_same_chdr;
 138 } XA_ACTION;
 139
 140 typedef struct XA_CHDR_STRUCT
 141 {
 142   unsigned int          rev;
 143   ColorReg              *cmap;
 144   unsigned int          csize, coff;
 145   unsigned int          *map;
 146   unsigned int          msize, moff;
 147   struct XA_CHDR_STRUCT *next;
 148   XA_ACTION             *acts;
 149   struct XA_CHDR_STRUCT *new_chdr;
 150 } XA_CHDR;
 151
 152 typedef struct
 153 {
 154   unsigned int          cmd;
 155   unsigned int          skip_flag;
 156   unsigned int          imagex, imagey; /* image buffer size */
 157   unsigned int          imaged;         /* image depth */
 158   XA_CHDR               *chdr;          /* color map header */
 159   unsigned int          map_flag;
 160   unsigned int          *map;
 161   unsigned int          xs, ys;
 162   unsigned int          xe, ye;
 163   unsigned int          special;
 164   void                  *extra;
 165 } XA_DEC_INFO;
 166
 167 typedef struct
 168 {
 169     unsigned int        file_num;
 170     unsigned int        anim_type;
 171     unsigned int        imagex;
 172     unsigned int        imagey;
 173     unsigned int        imagec;
 174     unsigned int        imaged;
 175 } XA_ANIM_HDR;
 176
 177 typedef struct {
 178     XA_DEC_INFO *decinfo;
 179     void *file_handler;
 180     long (*iq_func)(XA_CODEC_HDR *codec_hdr);
 181     unsigned int (*dec_func)(unsigned char *image, unsigned char *delta,
 182         unsigned int dsize, XA_DEC_INFO *dec_info);
 183     mp_image_t *mpi;
 184 } vd_xanim_ctx;
 185
 186 #if 0
 187 typedef char xaBYTE;
 188 typedef short xaSHORT;
 189 typedef int xaLONG;
 190
 191 typedef unsigned char xaUBYTE;
 192 typedef unsigned short xaUSHORT;
 193 typedef unsigned int xaULONG;
 194 #endif
 195
 196 #define xaFALSE 0
 197 #define xaTRUE 1
 198
 199 #define ACT_DLTA_NORM   0x00000000
 200 #define ACT_DLTA_BODY   0x00000001
 201 #define ACT_DLTA_XOR    0x00000002
 202 #define ACT_DLTA_NOP    0x00000004
 203 #define ACT_DLTA_MAPD   0x00000008
 204 #define ACT_DLTA_DROP   0x00000010
 205 #define ACT_DLTA_BAD    0x80000000
 206
 207 #define XA_CLOSE_FUNCS 5
 208 int xa_close_funcs = 0;
 209 void *xa_close_func[XA_CLOSE_FUNCS];
 210
 211 /* load, init and query */
 212 static int xacodec_load(sh_video_t *sh, char *filename)
 213 {
 214     vd_xanim_ctx *priv = sh->context;
 215     void *(*what_the)();
 216     char *error;
 217     XAVID_MOD_HDR *mod_hdr;
 218     XAVID_FUNC_HDR *func;
 219     int i;
 220
 221 //    priv->file_handler = dlopen(filename, RTLD_NOW|RTLD_GLOBAL);
 222     priv->file_handler = dlopen(filename, RTLD_LAZY);
 223     if (!priv->file_handler)
 224     {
 225         error = dlerror();
 226         if (error)
 227             mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "xacodec: failed to dlopen %s while %s\n", filename, error);
 228         else
 229             mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "xacodec: failed to dlopen %s\n", filename);
 230         return 0;
 231     }
 232
 233     what_the = dlsym(priv->file_handler, "What_The");
 234     if ((error = dlerror()) != NULL)
 235     {
 236         mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "xacodec: failed to init %s while %s\n", filename, error);
 237         dlclose(priv->file_handler);
 238         return 0;
 239     }
 240
 241     mod_hdr = what_the();
 242     if (!mod_hdr)
 243     {
 244         mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "xacodec: initializer function failed in %s\n", filename);
 245         dlclose(priv->file_handler);
 246         return 0;
 247     }
 248
 249     mp_msg(MSGT_DECVIDEO, MSGL_V, "=== XAnim Codec ===\n");
 250     mp_msg(MSGT_DECVIDEO, MSGL_V, " Filename: %s (API revision: %x)\n", filename, mod_hdr->api_rev);
 251     mp_msg(MSGT_DECVIDEO, MSGL_V, " Codec: %s. Rev: %s\n", mod_hdr->desc, mod_hdr->rev);
 252     if (mod_hdr->copyright)
 253         mp_msg(MSGT_DECVIDEO, MSGL_V, " %s\n", mod_hdr->copyright);
 254     if (mod_hdr->mod_author)
 255         mp_msg(MSGT_DECVIDEO, MSGL_V, " Module Author(s): %s\n", mod_hdr->mod_author);
 256     if (mod_hdr->authors)
 257         mp_msg(MSGT_DECVIDEO, MSGL_V, " Codec Author(s): %s\n", mod_hdr->authors);
 258
 259     if (mod_hdr->api_rev > XAVID_API_REV)
 260     {
 261         mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "xacodec: not supported api revision (%d) in %s\n",
 262             mod_hdr->api_rev, filename);
 263         dlclose(priv->file_handler);
 264         return 0;
 265     }
 266
 267     func = mod_hdr->funcs;
 268     if (!func)
 269     {
 270         mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "xacodec: function table error in %s\n", filename);
 271         dlclose(priv->file_handler);
 272         return 0;
 273     }
 274
 275     mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "Exported functions by codec: [functable: %p entries: %d]\n",
 276         mod_hdr->funcs, mod_hdr->num_funcs);
 277     for (i = 0; i < (int)mod_hdr->num_funcs; i++)
 278     {
 279         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, " %d: %d %d [iq:%p d:%p]\n",
 280                 i, func[i].what, func[i].id, func[i].iq_func, func[i].dec_func);
 281         if (func[i].what & XAVID_AVI_QUERY)
 282         {
 283             mp_msg(MSGT_DECVIDEO, MSGL_DBG2, " %p: avi init/query func (id: %d)\n",
 284                 func[i].iq_func, func[i].id);
 285             priv->iq_func = (void *)func[i].iq_func;
 286         }
 287         if (func[i].what & XAVID_QT_QUERY)
 288         {
 289             mp_msg(MSGT_DECVIDEO, MSGL_DBG2, " %p: qt init/query func (id: %d)\n",
 290                 func[i].iq_func, func[i].id);
 291             priv->iq_func = (void *)func[i].iq_func;
 292         }
 293         if (func[i].what & XAVID_DEC_FUNC)
 294         {
 295             mp_msg(MSGT_DECVIDEO, MSGL_DBG2, " %p: decoder func (init/query: %p) (id: %d)\n",
 296                 func[i].dec_func, func[i].iq_func, func[i].id);
 297             priv->dec_func = (void *)func[i].dec_func;
 298         }
 299     }
 300     return 1;
 301 }
 302
 303 static int xacodec_query(sh_video_t *sh, XA_CODEC_HDR *codec_hdr)
 304 {
 305     vd_xanim_ctx *priv = sh->context;
 306     long ret;
 307
 308 #if 0
 309     /* the brute one */
 310     if (priv->dec_func)
 311     {
 312         codec_hdr->decoder = priv->dec_func;
 313         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "We got decoder's address at init! %p\n", codec_hdr->decoder);
 314         return 1;
 315     }
 316 #endif
 317
 318     ret = priv->iq_func(codec_hdr);
 319     switch(ret)
 320     {
 321         case CODEC_SUPPORTED:
 322             priv->dec_func = (void *)codec_hdr->decoder;
 323             mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "Codec is supported: found decoder for %s at %p\n",
 324                 codec_hdr->description, codec_hdr->decoder);
 325             return 1;
 326         case CODEC_UNSUPPORTED:
 327             mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "Codec (%s) is unsupported by dll\n",
 328                 codec_hdr->description);
 329             return 0;
 330         case CODEC_UNKNOWN:
 331         default:
 332             mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "Codec (%s) is unknown by dll\n",
 333                 codec_hdr->description);
 334             return 0;
 335     }
 336 }
 337
 338 /* These functions are required for loading XAnim binary libs.
 339  * Add forward declarations to avoid warnings with -Wmissing-prototypes. */
 340 void XA_Print(char *fmt, ...);
 341 void TheEnd1(char *err_mess);
 342 void XA_Add_Func_To_Free_Chain(XA_ANIM_HDR *anim_hdr, void (*function)());
 343 unsigned long XA_Time_Read(void);
 344 void XA_Gen_YUV_Tabs(XA_ANIM_HDR *anim_hdr);
 345 void JPG_Setup_Samp_Limit_Table(XA_ANIM_HDR *anim_hdr);
 346 void JPG_Alloc_MCU_Bufs(XA_ANIM_HDR *anim_hdr, unsigned int width,
 347                         unsigned int height, unsigned int full_flag);
 348 void *YUV2x2_Blk_Func(unsigned int image_type, int blks,
 349                       unsigned int dith_flag);
 350 void *YUV2x2_Map_Func(unsigned int image_type, unsigned int dith_type);
 351 void *XA_YUV1611_Func(unsigned int image_type);
 352 void *XA_YUV221111_Func(unsigned int image_type);
 353
 354 void XA_Print(char *fmt, ...)
 355 {
 356     va_list vallist;
 357     char buf[1024];
 358
 359     va_start(vallist, fmt);
 360     vsnprintf(buf, 1024, fmt, vallist);
 361     mp_msg(MSGT_XACODEC, MSGL_DBG2, "[xacodec] %s\n", buf);
 362     va_end(vallist);
 363
 364     return;
 365 }
 366
 367 /* 0 is no debug (needed by 3ivX) */
 368 long xa_debug = 0;
 369
 370 void TheEnd1(char *err_mess)
 371 {
 372     XA_Print("error: %s - exiting\n", err_mess);
 373     /* we should exit here... */
 374
 375     return;
 376 }
 377
 378 void XA_Add_Func_To_Free_Chain(XA_ANIM_HDR *anim_hdr, void (*function)())
 379 {
 380 //    XA_Print("XA_Add_Func_To_Free_Chain('anim_hdr: %08x', 'function: %08x')",
 381 //          anim_hdr, function);
 382     xa_close_func[xa_close_funcs] = function;
 383     if (xa_close_funcs+1 < XA_CLOSE_FUNCS)
 384         xa_close_funcs++;
 385
 386     return;
 387 }
 388
 389 unsigned long XA_Time_Read(void)
 390 {
 391     return GetTimer(); //(GetRelativeTime());
 392 }
 393
 394 static void XA_dummy(void)
 395 {
 396     XA_Print("dummy() called");
 397 }
 398
 399 void XA_Gen_YUV_Tabs(XA_ANIM_HDR *anim_hdr)
 400 {
 401     XA_Print("XA_Gen_YUV_Tabs('anim_hdr: %08x')", anim_hdr);
 402     return;
 403 }
 404
 405 void JPG_Setup_Samp_Limit_Table(XA_ANIM_HDR *anim_hdr)
 406 {
 407     XA_Print("JPG_Setup_Samp_Limit_Table('anim_hdr: %08x')", anim_hdr);
 408     return;
 409 }
 410
 411 void JPG_Alloc_MCU_Bufs(XA_ANIM_HDR *anim_hdr, unsigned int width,
 412                         unsigned int height, unsigned int full_flag)
 413 {
 414     XA_Print("JPG_Alloc_MCU_Bufs('anim_hdr: %08x', 'width: %d', 'height: %d', 'full_flag: %d')",
 415             anim_hdr, width, height, full_flag);
 416     return;
 417 }
 418
 419 /* ---------------  4x4 pixel YUV block fillers [CVID] ----------------- */
 420
 421 typedef struct
 422 {
 423     unsigned char r0, g0, b0;
 424     unsigned char r1, g1, b1;
 425     unsigned char r2, g2, b2;
 426     unsigned char r3, g3, b3;
 427     unsigned int clr0_0, clr0_1, clr0_2, clr0_3;
 428     unsigned int clr1_0, clr1_1, clr1_2, clr1_3;
 429     unsigned int clr2_0, clr2_1, clr2_2, clr2_3;
 430     unsigned int clr3_0, clr3_1, clr3_2, clr3_3;
 431 } XA_2x2_Color;
 432
 433 #define SET_4_YUV_PIXELS(image,x,y,cmap2x2) \
 434     image->planes[0][((x)+0)+((y)+0)*image->stride[0]]=cmap2x2->clr0_0;\
 435     image->planes[0][((x)+1)+((y)+0)*image->stride[0]]=cmap2x2->clr0_1;\
 436     image->planes[0][((x)+0)+((y)+1)*image->stride[0]]=cmap2x2->clr0_2;\
 437     image->planes[0][((x)+1)+((y)+1)*image->stride[0]]=cmap2x2->clr0_3;\
 438     image->planes[1][((x)>>1)+((y)>>1)*image->stride[1]]=cmap2x2->clr1_0;\
 439     image->planes[2][((x)>>1)+((y)>>1)*image->stride[2]]=cmap2x2->clr1_1;
 440
 441 static void XA_2x2_OUT_1BLK_Convert(unsigned char *image_p, unsigned int x, unsigned int y,
 442     unsigned int imagex, XA_2x2_Color *cmap2x2)
 443 {
 444     mp_image_t *mpi = (mp_image_t *)image_p;
 445
 446 #if 0
 447     SET_4_YUV_PIXELS(mpi,x,y,cmap2x2)
 448 #else
 449     SET_4_YUV_PIXELS(mpi,x,y,cmap2x2)
 450     SET_4_YUV_PIXELS(mpi,x+2,y,cmap2x2)
 451     SET_4_YUV_PIXELS(mpi,x,y+2,cmap2x2)
 452     SET_4_YUV_PIXELS(mpi,x+2,y+2,cmap2x2)
 453 #endif
 454
 455     return;
 456 }
 457
 458 static void XA_2x2_OUT_4BLKS_Convert(unsigned char *image_p, unsigned int x, unsigned int y,
 459     unsigned int imagex, XA_2x2_Color *cm0, XA_2x2_Color *cm1, XA_2x2_Color *cm2,
 460     XA_2x2_Color *cm3)
 461 {
 462     mp_image_t *mpi = (mp_image_t *)image_p;
 463
 464     SET_4_YUV_PIXELS(mpi,x,y,cm0)
 465     SET_4_YUV_PIXELS(mpi,x+2,y,cm1)
 466     SET_4_YUV_PIXELS(mpi,x,y+2,cm2)
 467     SET_4_YUV_PIXELS(mpi,x+2,y+2,cm3)
 468     return;
 469 }
 470
 471 void *YUV2x2_Blk_Func(unsigned int image_type, int blks, unsigned int dith_flag)
 472 {
 473     mp_dbg(MSGT_DECVIDEO,MSGL_DBG2, "YUV2x2_Blk_Func(image_type=%d, blks=%d, dith_flag=%d)\n",
 474         image_type, blks, dith_flag);
 475     switch(blks){
 476     case 1:
 477         return (void*) XA_2x2_OUT_1BLK_Convert;
 478     case 4:
 479         return (void*) XA_2x2_OUT_4BLKS_Convert;
 480     }
 481
 482     mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Unimplemented: YUV2x2_Blk_Func(image_type=%d  blks=%d  dith=%d)\n",image_type,blks,dith_flag);
 483     return (void*) XA_dummy;
 484 }
 485
 486 //  Take Four Y's and UV and put them into a 2x2 Color structure.
 487
 488 static void XA_YUV_2x2_clr(XA_2x2_Color *cmap2x2, unsigned int Y0, unsigned int Y1,
 489     unsigned int Y2, unsigned int Y3, unsigned int U, unsigned int V,
 490     unsigned int map_flag, unsigned int *map, XA_CHDR *chdr)
 491 {
 492
 493   mp_dbg(MSGT_DECVIDEO,MSGL_DBG3, "XA_YUV_2x2_clr(%p [%d,%d,%d,%d][%d][%d] %d %p %p)\n",
 494           cmap2x2,Y0,Y1,Y2,Y3,U,V,map_flag,map,chdr);
 495
 496   cmap2x2->clr0_0=Y0;
 497   cmap2x2->clr0_1=Y1;
 498   cmap2x2->clr0_2=Y2;
 499   cmap2x2->clr0_3=Y3;
 500   cmap2x2->clr1_0=U;
 501   cmap2x2->clr1_1=V;
 502   return;
 503 }
 504
 505 void *YUV2x2_Map_Func(unsigned int image_type, unsigned int dith_type)
 506 {
 507     mp_dbg(MSGT_DECVIDEO,MSGL_DBG2, "YUV2x2_Map_Func('image_type: %d', 'dith_type: %d')",
 508             image_type, dith_type);
 509     return (void*)XA_YUV_2x2_clr;
 510 }
 511
 512 /* -------------------- whole YUV frame converters ------------------------- */
 513
 514 typedef struct
 515 {
 516     unsigned char *Ybuf;
 517     unsigned char *Ubuf;
 518     unsigned char *Vbuf;
 519     unsigned char *the_buf;
 520     unsigned int the_buf_size;
 521     unsigned short y_w, y_h;
 522     unsigned short uv_w, uv_h;
 523 } YUVBufs;
 524
 525 typedef struct
 526 {
 527     unsigned long Uskip_mask;
 528     long        *YUV_Y_tab;
 529     long        *YUV_UB_tab;
 530     long        *YUV_VR_tab;
 531     long        *YUV_UG_tab;
 532     long        *YUV_VG_tab;
 533 } YUVTabs;
 534
 535 YUVBufs jpg_YUVBufs;
 536 YUVTabs def_yuv_tabs;
 537
 538 /* -------------- YUV 4x4 1x1 1x1  (4:1:0 aka YVU9) [Indeo 3,4,5] ------------------ */
 539
 540 static void XA_YUV1611_Convert(unsigned char *image_p, unsigned int imagex, unsigned int imagey,
 541     unsigned int i_x, unsigned int i_y, YUVBufs *yuv, YUVTabs *yuv_tabs,
 542     unsigned int map_flag, unsigned int *map, XA_CHDR *chdr)
 543 {
 544     sh_video_t *sh = (sh_video_t*)image_p;
 545     vd_xanim_ctx *priv = sh->context;
 546     mp_image_t *mpi;
 547     int y;
 548     int ystride=(yuv->y_w)?yuv->y_w:imagex;
 549     int uvstride=(yuv->uv_w)?yuv->uv_w:(imagex/4);
 550
 551     mp_dbg(MSGT_DECVIDEO,MSGL_DBG3, "YUVTabs:  %d %p %p %p %p %p\n",yuv_tabs->Uskip_mask,
 552         yuv_tabs->YUV_Y_tab,
 553         yuv_tabs->YUV_UB_tab,
 554         yuv_tabs->YUV_VR_tab,
 555         yuv_tabs->YUV_UG_tab,
 556         yuv_tabs->YUV_VG_tab );
 557
 558     mp_dbg(MSGT_DECVIDEO,MSGL_DBG3, "XA_YUV1611_Convert('image: %08x', 'imagex: %d', 'imagey: %d', 'i_x: %d', 'i_y: %d', 'yuv_bufs: %08x', 'yuv_tabs: %08x', 'map_flag: %d', 'map: %08x', 'chdr: %08x')",
 559         image_p, imagex, imagey, i_x, i_y, yuv, yuv_tabs, map_flag, map, chdr);
 560
 561     mp_dbg(MSGT_DECVIDEO,MSGL_DBG3, "YUV: %p %p %p %X (%d) %dx%d %dx%d\n",
 562         yuv->Ybuf,yuv->Ubuf,yuv->Vbuf,yuv->the_buf,yuv->the_buf_size,
 563         yuv->y_w,yuv->y_h,yuv->uv_w,yuv->uv_h);
 564
 565     if(!yuv_tabs->YUV_Y_tab){
 566         // standard YVU9 - simply export it!
 567         mpi = mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, 0,
 568             sh->disp_w, sh->disp_h);
 569         priv->mpi=mpi; if(!mpi) return; // ERROR!
 570         mpi->planes[0]=yuv->Ybuf;
 571         mpi->planes[1]=yuv->Ubuf;
 572         mpi->planes[2]=yuv->Vbuf;
 573         mpi->width=imagex;
 574         mpi->stride[0]=ystride; //i_x; // yuv->y_w
 575         mpi->stride[1]=mpi->stride[2]=uvstride; //i_x/4; // yuv->uv_w
 576         return;
 577     }
 578
 579     // allocate TEMP buffer and convert the image:
 580     mpi = mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
 581         sh->disp_w, sh->disp_h);
 582     priv->mpi=mpi; if(!mpi) return; // ERROR!
 583
 584     // convert the Y plane:
 585     for(y=0;y<(int)imagey;y++){
 586         unsigned int x;
 587         unsigned char* s=yuv->Ybuf+ystride*y;
 588         unsigned char* d=mpi->planes[0]+mpi->stride[0]*y;
 589         for(x=0;x<imagex;x++) d[x]=s[x]<<1;
 590     }
 591
 592     imagex>>=2;
 593     imagey>>=2;
 594
 595     // convert the U plane:
 596     for(y=0;y<(int)imagey;y++){
 597         unsigned int x;
 598         unsigned char* s=yuv->Ubuf+uvstride*y;
 599         unsigned char* d=mpi->planes[1]+mpi->stride[1]*y;
 600         for(x=0;x<imagex;x++) d[x]=s[x]<<1;
 601     }
 602
 603     // convert the V plane:
 604     for(y=0;y<(int)imagey;y++){
 605         unsigned int x;
 606         unsigned char* s=yuv->Vbuf+uvstride*y;
 607         unsigned char* d=mpi->planes[2]+mpi->stride[2]*y;
 608         for(x=0;x<imagex;x++) d[x]=s[x]<<1;
 609     }
 610 }
 611
 612 void *XA_YUV1611_Func(unsigned int image_type)
 613 {
 614     mp_dbg(MSGT_DECVIDEO,MSGL_DBG2, "XA_YUV1611_Func('image_type: %d')", image_type);
 615     return (void *)XA_YUV1611_Convert;
 616 }
 617
 618 /* --------------- YUV 2x2 1x1 1x1 (4:2:0 aka YV12) [3ivX,H263] ------------ */
 619
 620 static void XA_YUV221111_Convert(unsigned char *image_p, unsigned int imagex, unsigned int imagey,
 621     unsigned int i_x, unsigned int i_y, YUVBufs *yuv, YUVTabs *yuv_tabs, unsigned int map_flag,
 622     unsigned int *map, XA_CHDR *chdr)
 623 {
 624     sh_video_t *sh = (sh_video_t*)image_p;
 625     vd_xanim_ctx *priv = sh->context;
 626     mp_image_t *mpi;
 627     // note: 3ivX codec doesn't set y_w, uv_w, they are random junk :(
 628     int ystride=imagex; //(yuv->y_w)?yuv->y_w:imagex;
 629     int uvstride=imagex/2; //(yuv->uv_w)?yuv->uv_w:(imagex/2);
 630
 631     mp_dbg(MSGT_DECVIDEO,MSGL_DBG3, "XA_YUV221111_Convert(%p  %dx%d %d;%d [%dx%d]  %p %p %d %p %p)\n",
 632         image_p,imagex,imagey,i_x,i_y, sh->disp_w, sh->disp_h,
 633         yuv,yuv_tabs,map_flag,map,chdr);
 634
 635     mp_dbg(MSGT_DECVIDEO,MSGL_DBG3, "YUV: %p %p %p %X (%X) %Xx%X %Xx%X\n",
 636         yuv->Ybuf,yuv->Ubuf,yuv->Vbuf,yuv->the_buf,yuv->the_buf_size,
 637         yuv->y_w,yuv->y_h,yuv->uv_w,yuv->uv_h);
 638
 639     // standard YV12 - simply export it!
 640     mpi = mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, 0, sh->disp_w, sh->disp_h);
 641     priv->mpi=mpi; if(!mpi) return; // ERROR!
 642     mpi->planes[0]=yuv->Ybuf;
 643     mpi->planes[1]=yuv->Ubuf;
 644     mpi->planes[2]=yuv->Vbuf;
 645     mpi->width=imagex;
 646     mpi->stride[0]=ystride; //i_x; // yuv->y_w
 647     mpi->stride[1]=mpi->stride[2]=uvstride;  //=i_x/4; // yuv->uv_w
 648 }
 649
 650 void *XA_YUV221111_Func(unsigned int image_type)
 651 {
 652     mp_dbg(MSGT_DECVIDEO,MSGL_DBG2, "XA_YUV221111_Func('image_type: %d')\n",image_type);
 653     return (void *)XA_YUV221111_Convert;
 654 }
 655
 656 /* *** EOF XANIM *** */
 657
 658 // to set/get/query special features/parameters
 659 static int control(sh_video_t *sh,int cmd,void* arg,...){
 660     return CONTROL_UNKNOWN;
 661 }
 662
 663 // init driver
 664 static int init(sh_video_t *sh)
 665 {
 666     vd_xanim_ctx *priv;
 667     char *def_path = XACODEC_PATH;
 668     char dll[1024];
 669     XA_CODEC_HDR codec_hdr;
 670     int i;
 671
 672     priv = malloc(sizeof(vd_xanim_ctx));
 673     if (!priv)
 674         return 0;
 675     sh->context = priv;
 676     memset(priv, 0, sizeof(vd_xanim_ctx));
 677
 678     if(!mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12)) return 0;
 679
 680     priv->iq_func = NULL;
 681     priv->dec_func = NULL;
 682
 683     for (i=0; i < XA_CLOSE_FUNCS; i++)
 684         xa_close_func[i] = NULL;
 685
 686     if (getenv("XANIM_MOD_DIR"))
 687         def_path = getenv("XANIM_MOD_DIR");
 688
 689     snprintf(dll, 1024, "%s/%s", def_path, sh->codec->dll);
 690     if (xacodec_load(sh, dll) == 0)
 691         return 0;
 692
 693     codec_hdr.xapi_rev = XAVID_API_REV;
 694     codec_hdr.anim_hdr = malloc(4096);
 695     codec_hdr.description = sh->codec->info;
 696     codec_hdr.compression = bswap_32(sh->bih->biCompression);
 697     codec_hdr.decoder = NULL;
 698     codec_hdr.x = sh->bih->biWidth; /* ->disp_w */
 699     codec_hdr.y = sh->bih->biHeight; /* ->disp_h */
 700     /* extra fields to store palette */
 701     codec_hdr.avi_ctab_flag = 0;
 702     codec_hdr.avi_read_ext = NULL;
 703     codec_hdr.extra = NULL;
 704
 705     switch(sh->codec->outfmt[sh->outfmtidx])
 706     {
 707         case IMGFMT_BGR32:
 708             codec_hdr.depth = 32;
 709             break;
 710         case IMGFMT_BGR24:
 711             codec_hdr.depth = 24;
 712             break;
 713         case IMGFMT_IYUV:
 714         case IMGFMT_I420:
 715         case IMGFMT_YV12:
 716             codec_hdr.depth = 12;
 717             break;
 718         case IMGFMT_YVU9:
 719             codec_hdr.depth = 9;
 720             break;
 721         default:
 722             mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "xacodec: not supported image out format (%s)\n",
 723                 vo_format_name(sh->codec->outfmt[sh->outfmtidx]));
 724             return 0;
 725     }
 726     mp_msg(MSGT_DECVIDEO, MSGL_INFO, "xacodec: querying for input %dx%d %dbit [fourcc: %4x] (%s)...\n",
 727         codec_hdr.x, codec_hdr.y, codec_hdr.depth, codec_hdr.compression, codec_hdr.description);
 728
 729     if (xacodec_query(sh, &codec_hdr) == 0)
 730         return 0;
 731
 732 //    free(codec_hdr.anim_hdr);
 733
 734     priv->decinfo = malloc(sizeof(XA_DEC_INFO));
 735     if (priv->decinfo == NULL)
 736     {
 737         mp_msg(MSGT_DECVIDEO, MSGL_FATAL, "xacodec: memory allocation error: %s\n",
 738             strerror(errno));
 739         return 0;
 740     }
 741     priv->decinfo->cmd = 0;
 742     priv->decinfo->skip_flag = 0;
 743     priv->decinfo->imagex = priv->decinfo->xe = codec_hdr.x;
 744     priv->decinfo->imagey = priv->decinfo->ye = codec_hdr.y;
 745     priv->decinfo->imaged = codec_hdr.depth;
 746     priv->decinfo->chdr = NULL;
 747     priv->decinfo->map_flag = 0; /* xaFALSE */
 748     priv->decinfo->map = NULL;
 749     priv->decinfo->xs = priv->decinfo->ys = 0;
 750     priv->decinfo->special = 0;
 751     priv->decinfo->extra = codec_hdr.extra;
 752     mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "decinfo->extra, filled by codec: %p [%s]\n",
 753         &priv->decinfo->extra, (char *)priv->decinfo->extra);
 754
 755     return 1;
 756 }
 757
 758 // uninit driver
 759 static void uninit(sh_video_t *sh)
 760 {
 761     vd_xanim_ctx *priv = sh->context;
 762     int i;
 763     void (*close_func)();
 764
 765     for (i=0; i < XA_CLOSE_FUNCS; i++)
 766         if (xa_close_func[i])
 767         {
 768             close_func = xa_close_func[i];
 769             close_func();
 770         }
 771     dlclose(priv->file_handler);
 772     if (priv->decinfo != NULL)
 773         free(priv->decinfo);
 774     free(priv);
 775 }
 776
 777 //    unsigned int (*dec_func)(unsigned char *image, unsigned char *delta,
 778 //      unsigned int dsize, XA_DEC_INFO *dec_info);
 779
 780 // decode a frame
 781 static mp_image_t* decode(sh_video_t *sh, void *data, int len, int flags)
 782 {
 783     vd_xanim_ctx *priv = sh->context;
 784     unsigned int ret;
 785
 786     if (len <= 0)
 787         return NULL; // skipped frame
 788
 789     priv->decinfo->skip_flag = (flags&3)?1:0;
 790
 791     if(sh->codec->outflags[sh->outfmtidx] & CODECS_FLAG_STATIC){
 792         // allocate static buffer for cvid-like codecs:
 793         priv->mpi = mpcodecs_get_image(sh, MP_IMGTYPE_STATIC,
 794             MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 795             (sh->disp_w+3)&(~3), (sh->disp_h+3)&(~3));
 796         if (!priv->mpi) return NULL;
 797         ret = priv->dec_func((uint8_t*)priv->mpi, data, len, priv->decinfo);
 798     } else {
 799         // left the buffer allocation to the codecs, pass sh_video && priv
 800         priv->mpi=NULL;
 801         ret = priv->dec_func((uint8_t*)sh, data, len, priv->decinfo);
 802     }
 803
 804     if (ret == ACT_DLTA_NORM)
 805         return priv->mpi;
 806
 807     if (ret & ACT_DLTA_MAPD)
 808         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "mapd\n");
 809 /*
 810     if (!(ret & ACT_DLT_MAPD))
 811         xacodec_driver->decinfo->map_flag = 0;
 812     else
 813     {
 814         xacodec_driver->decinfo->map_flag = 1;
 815         xacodec_driver->decinfo->map = ...
 816     }
 817 */
 818
 819     if (ret & ACT_DLTA_XOR)
 820     {
 821         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "xor\n");
 822         return priv->mpi;
 823     }
 824
 825     /* nothing changed */
 826     if (ret & ACT_DLTA_NOP)
 827     {
 828         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "nop\n");
 829         return NULL;
 830     }
 831
 832     /* frame dropped (also display latest frame) */
 833     if (ret & ACT_DLTA_DROP)
 834     {
 835         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "drop\n");
 836         return NULL;
 837     }
 838
 839     if (ret & ACT_DLTA_BAD)
 840     {
 841         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "bad\n");
 842         return NULL;
 843     }
 844
 845     /* used for double buffer */
 846     if (ret & ACT_DLTA_BODY)
 847     {
 848         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "body\n");
 849         return NULL;
 850     }
 851
 852     return priv->mpi;
 853 }