libmpcodecs/vd_realvid.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
  22 #include "config.h"
  23
  24 #ifdef HAVE_LIBDL
  25 #include <dlfcn.h>
  26 #endif
  27
  28 #include "mp_msg.h"
  29 #include "ffmpeg_files/intreadwrite.h"
  30 #include "path.h"
  31
  32 #include "vd_internal.h"
  33 #include "loader/wine/windef.h"
  34
  35 static const vd_info_t info = {
  36         "RealVideo decoder",
  37         "realvid",
  38         "Alex Beregszaszi",
  39         "Florian Schneider, Arpad Gereoffy, Alex Beregszaszi, Donnie Smith",
  40         "binary real video codecs"
  41 };
  42
  43 LIBVD_EXTERN(realvid)
  44
  45
  46 /*
  47  * Structures for data packets.  These used to be tables of unsigned ints, but
  48  * that does not work on 64 bit platforms (e.g. Alpha).  The entries that are
  49  * pointers get truncated.  Pointers on 64 bit platforms are 8 byte longs.
  50  * So we have to use structures so the compiler will assign the proper space
  51  * for the pointer.
  52  */
  53 typedef struct cmsg_data_s {
  54         uint32_t data1;
  55         uint32_t data2;
  56         uint32_t* dimensions;
  57 } cmsg_data_t;
  58
  59 typedef struct transform_in_s {
  60         uint32_t len;
  61         uint32_t unknown1;
  62         uint32_t chunks;
  63         uint32_t* extra;
  64         uint32_t unknown2;
  65         uint32_t timestamp;
  66 } transform_in_t;
  67
  68 static unsigned long (*rvyuv_custom_message)(cmsg_data_t* ,void*);
  69 static unsigned long (*rvyuv_free)(void*);
  70 static unsigned long (*rvyuv_init)(void*, void*); // initdata,context
  71 static unsigned long (*rvyuv_transform)(char*, char*,transform_in_t*,unsigned int*,void*);
  72 #ifdef CONFIG_WIN32DLL
  73 static unsigned long WINAPI (*wrvyuv_custom_message)(cmsg_data_t* ,void*);
  74 static unsigned long WINAPI (*wrvyuv_free)(void*);
  75 static unsigned long WINAPI (*wrvyuv_init)(void*, void*); // initdata,context
  76 static unsigned long WINAPI (*wrvyuv_transform)(char*, char*,transform_in_t*,unsigned int*,void*);
  77 #endif
  78
  79 static void *rv_handle=NULL;
  80 static int initialized=0;
  81 static uint8_t *buffer = NULL;
  82 static int bufsz = 0;
  83 #ifdef CONFIG_WIN32DLL
  84 static int dll_type = 0; /* 0 = unix dlopen, 1 = win32 dll */
  85 #endif
  86
  87 void *__builtin_vec_new(unsigned long size) {
  88         return malloc(size);
  89 }
  90
  91 void __builtin_vec_delete(void *mem) {
  92         free(mem);
  93 }
  94
  95 void __pure_virtual(void) {
  96         printf("FATAL: __pure_virtual() called!\n");
  97 //      exit(1);
  98 }
  99
 100 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
 101 void ___brk_addr(void) {exit(0);}
 102 char **__environ={NULL};
 103 #undef stderr
 104 FILE *stderr=NULL;
 105 #endif
 106
 107 // to set/get/query special features/parameters
 108 static int control(sh_video_t *sh,int cmd,void* arg,...){
 109 //    switch(cmd){
 110 //    case VDCTRL_QUERY_MAX_PP_LEVEL:
 111 //      return 9;
 112 //    case VDCTRL_SET_PP_LEVEL:
 113 //      vfw_set_postproc(sh,10*(*((int*)arg)));
 114 //      return CONTROL_OK;
 115 //    }
 116     return CONTROL_UNKNOWN;
 117 }
 118
 119 /* exits program when failure */
 120 #ifdef HAVE_LIBDL
 121 static int load_syms_linux(char *path) {
 122                 void *handle;
 123
 124                 mp_msg(MSGT_DECVIDEO,MSGL_V, "opening shared obj '%s'\n", path);
 125                 handle = dlopen (path, RTLD_LAZY);
 126                 if (!handle) {
 127                         mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error: %s\n",dlerror());
 128                         return 0;
 129                 }
 130
 131                 rvyuv_custom_message = dlsym(handle, "RV20toYUV420CustomMessage");
 132                 rvyuv_free = dlsym(handle, "RV20toYUV420Free");
 133                 rvyuv_init = dlsym(handle, "RV20toYUV420Init");
 134                 rvyuv_transform = dlsym(handle, "RV20toYUV420Transform");
 135
 136     if(rvyuv_custom_message &&
 137        rvyuv_free &&
 138        rvyuv_init &&
 139        rvyuv_transform)
 140     {
 141         rv_handle = handle;
 142         return 1;
 143     }
 144
 145                 rvyuv_custom_message = dlsym(handle, "RV40toYUV420CustomMessage");
 146                 rvyuv_free = dlsym(handle, "RV40toYUV420Free");
 147                 rvyuv_init = dlsym(handle, "RV40toYUV420Init");
 148                 rvyuv_transform = dlsym(handle, "RV40toYUV420Transform");
 149
 150     if(rvyuv_custom_message &&
 151        rvyuv_free &&
 152        rvyuv_init &&
 153        rvyuv_transform)
 154     {
 155         rv_handle = handle;
 156         return 1;
 157     }
 158
 159     mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error resolving symbols! (version incompatibility?)\n");
 160     dlclose(handle);
 161     return 0;
 162 }
 163 #endif
 164
 165 #ifdef CONFIG_WIN32DLL
 166
 167 #ifdef WIN32_LOADER
 168 #include "loader/ldt_keeper.h"
 169 #endif
 170 void* WINAPI LoadLibraryA(char* name);
 171 void* WINAPI GetProcAddress(void* handle,char* func);
 172 int WINAPI FreeLibrary(void *handle);
 173
 174 #ifndef WIN32_LOADER
 175 void * WINAPI GetModuleHandleA(char *);
 176 static int patch_dll(uint8_t *patchpos, const uint8_t *oldcode,
 177                      const uint8_t *newcode, int codesize) {
 178   void *handle = GetModuleHandleA("kernel32");
 179   int WINAPI (*VirtProt)(void *, unsigned, int, int *);
 180   int res = 0;
 181   int prot, tmp;
 182   VirtProt = GetProcAddress(handle, "VirtualProtect");
 183   // change permissions to PAGE_WRITECOPY
 184   if (!VirtProt ||
 185       !VirtProt(patchpos, codesize, 0x08, &prot)) {
 186     mp_msg(MSGT_DECVIDEO, MSGL_WARN, "VirtualProtect failed at %p\n", patchpos);
 187     return 0;
 188   }
 189   if (memcmp(patchpos, oldcode, codesize) == 0) {
 190     memcpy(patchpos, newcode, codesize);
 191     res = 1;
 192   }
 193   VirtProt(patchpos, codesize, prot, &tmp);
 194   return res;
 195 }
 196 #endif
 197
 198 static int load_syms_windows(char *path) {
 199     void *handle;
 200
 201     mp_msg(MSGT_DECVIDEO,MSGL_V, "opening win32 dll '%s'\n", path);
 202 #ifdef WIN32_LOADER
 203     Setup_LDT_Keeper();
 204 #endif
 205     handle = LoadLibraryA(path);
 206     mp_msg(MSGT_DECVIDEO,MSGL_V,"win32 real codec handle=%p  \n",handle);
 207     if (!handle) {
 208         mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error loading dll\n");
 209         return 0;
 210     }
 211
 212     wrvyuv_custom_message = GetProcAddress(handle, "RV20toYUV420CustomMessage");
 213     wrvyuv_free = GetProcAddress(handle, "RV20toYUV420Free");
 214     wrvyuv_init = GetProcAddress(handle, "RV20toYUV420Init");
 215     wrvyuv_transform = GetProcAddress(handle, "RV20toYUV420Transform");
 216
 217     if(wrvyuv_custom_message &&
 218        wrvyuv_free &&
 219        wrvyuv_init &&
 220        wrvyuv_transform)
 221     {
 222         dll_type = 1;
 223         rv_handle = handle;
 224 #ifndef WIN32_LOADER
 225         {
 226             if (strstr(path, "drv43260.dll")) {
 227                 int patched;
 228                 // patch away multithreaded decoding, it causes crashes
 229                 static const uint8_t oldcode[13] = {
 230                     0x83, 0xbb, 0xf8, 0x05, 0x00, 0x00, 0x01,
 231                     0x0f, 0x86, 0xd0, 0x00, 0x00, 0x00 };
 232                 static const uint8_t newcode[13] = {
 233                     0x31, 0xc0,
 234                     0x89, 0x83, 0xf8, 0x05, 0x00, 0x00,
 235                     0xe9, 0xd0, 0x00, 0x00, 0x00 };
 236                 patched = patch_dll(
 237                         (char*)wrvyuv_transform + 0x634132fa - 0x634114d0,
 238                         oldcode, newcode, sizeof(oldcode));
 239                 if (!patched)
 240                     mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Could not patch Real codec, this might crash on multi-CPU systems\n");
 241             }
 242         }
 243 #endif
 244         return 1;
 245     }
 246
 247     wrvyuv_custom_message = GetProcAddress(handle, "RV40toYUV420CustomMessage");
 248     wrvyuv_free = GetProcAddress(handle, "RV40toYUV420Free");
 249     wrvyuv_init = GetProcAddress(handle, "RV40toYUV420Init");
 250     wrvyuv_transform = GetProcAddress(handle, "RV40toYUV420Transform");
 251     if(wrvyuv_custom_message &&
 252        wrvyuv_free &&
 253        wrvyuv_init &&
 254        wrvyuv_transform) {
 255         dll_type = 1;
 256         rv_handle = handle;
 257         return 1;
 258     }
 259
 260     mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error resolving symbols! (version incompatibility?)\n");
 261     FreeLibrary(handle);
 262     return 0; // error
 263 }
 264 #endif
 265
 266 /* we need exact positions */
 267 struct rv_init_t {
 268         short unk1;
 269         short w;
 270         short h;
 271         short unk3;
 272         int unk2;
 273         int subformat;
 274         int unk5;
 275         int format;
 276 } rv_init_t;
 277
 278 // init driver
 279 static int init(sh_video_t *sh){
 280         //unsigned int out_fmt;
 281         char *path;
 282         int result;
 283         // we export codec id and sub-id from demuxer in bitmapinfohdr:
 284         unsigned char* extrahdr=(unsigned char*)(sh->bih+1);
 285         unsigned int extrahdr_size = sh->bih->biSize - sizeof(BITMAPINFOHEADER);
 286         struct rv_init_t init_data;
 287
 288         if(extrahdr_size < 8) {
 289             mp_msg(MSGT_DECVIDEO,MSGL_ERR,"realvideo: extradata too small (%u)\n", sh->bih->biSize - sizeof(BITMAPINFOHEADER));
 290             return 0;
 291         }
 292         init_data = (struct rv_init_t){11, sh->disp_w, sh->disp_h, 0, 0, AV_RB32(extrahdr), 1, AV_RB32(extrahdr + 4)}; // rv30
 293
 294         mp_msg(MSGT_DECVIDEO,MSGL_V,"realvideo codec id: 0x%08X  sub-id: 0x%08X\n",init_data.format,init_data.subformat);
 295
 296         path = malloc(strlen(codec_path) + strlen(sh->codec->dll) + 2);
 297         if (!path) return 0;
 298         sprintf(path, "%s/%s", codec_path, sh->codec->dll);
 299
 300         /* first try to load linux dlls, if failed and we're supporting win32 dlls,
 301            then try to load the windows ones */
 302 #ifdef HAVE_LIBDL
 303         if(strstr(sh->codec->dll,".dll") || !load_syms_linux(path))
 304 #endif
 305 #ifdef CONFIG_WIN32DLL
 306             if (!load_syms_windows(sh->codec->dll))
 307 #endif
 308         {
 309                 mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"ERROR: Could not open required DirectShow codec %s.\n",sh->codec->dll);
 310                 mp_msg(MSGT_DECVIDEO,MSGL_HINT,"Read the RealVideo section of the DOCS!\n");
 311                 free(path);
 312                 return 0;
 313         }
 314         free(path);
 315         // only I420 supported
 316 //      if((sh->format!=0x30335652) && !mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_I420)) return 0;
 317         // init codec:
 318         sh->context=NULL;
 319 #ifdef CONFIG_WIN32DLL
 320         if (dll_type == 1)
 321             result=(*wrvyuv_init)(&init_data, &sh->context);
 322         else
 323 #endif
 324         result=(*rvyuv_init)(&init_data, &sh->context);
 325         if (result){
 326             mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Couldn't open RealVideo codec, error code: 0x%X  \n",result);
 327             return 0;
 328         }
 329         // setup rv30 codec (codec sub-type and image dimensions):
 330         if((sh->format<=0x30335652) && AV_RB32(extrahdr + 4)>=0x20200002){
 331             int i, cmsg_cnt;
 332             uint32_t cmsg24[16]={sh->disp_w,sh->disp_h};
 333             cmsg_data_t cmsg_data={0x24,1+(extrahdr[1]&7), &cmsg24[0]};
 334
 335             mp_msg(MSGT_DECVIDEO,MSGL_V,"realvideo: using cmsg24 with %u elements.\n",extrahdr[1]&7);
 336             cmsg_cnt = (extrahdr[1]&7)*2;
 337             if (extrahdr_size-8 < cmsg_cnt) {
 338                 mp_msg(MSGT_DECVIDEO,MSGL_WARN,"realvideo: not enough extradata (%u) to make %u cmsg24 elements.\n",extrahdr_size-8,extrahdr[1]&7);
 339                 cmsg_cnt = extrahdr_size-8;
 340             }
 341             for (i = 0; i < cmsg_cnt; i++)
 342                 cmsg24[2+i] = extrahdr[8+i]*4;
 343             if (extrahdr_size-8 > cmsg_cnt)
 344                 mp_msg(MSGT_DECVIDEO,MSGL_WARN,"realvideo: %u bytes of unknown extradata remaining.\n",extrahdr_size-8-cmsg_cnt);
 345
 346 #ifdef CONFIG_WIN32DLL
 347             if (dll_type == 1)
 348                 (*wrvyuv_custom_message)(&cmsg_data,sh->context);
 349             else
 350 #endif
 351             (*rvyuv_custom_message)(&cmsg_data,sh->context);
 352         }
 353         mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: RealVideo codec init OK!\n");
 354         return 1;
 355 }
 356
 357 // uninit driver
 358 static void uninit(sh_video_t *sh){
 359 #ifdef CONFIG_WIN32DLL
 360         if (dll_type == 1)
 361         {
 362             if (wrvyuv_free) wrvyuv_free(sh->context);
 363         } else
 364 #endif
 365         if(rvyuv_free) rvyuv_free(sh->context);
 366
 367 #ifdef CONFIG_WIN32DLL
 368         if (dll_type == 1)
 369         {
 370             if (rv_handle) FreeLibrary(rv_handle);
 371         } else
 372 #endif
 373 #ifdef HAVE_LIBDL
 374         if(rv_handle) dlclose(rv_handle);
 375 #endif
 376         rv_handle=NULL;
 377         initialized = 0;
 378         if (buffer)
 379             free(buffer);
 380         buffer = NULL;
 381         bufsz = 0;
 382 }
 383
 384 // decode a frame
 385 static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
 386         mp_image_t* mpi;
 387         unsigned long result;
 388         uint8_t *buf = data;
 389         int chunks = *buf++;
 390         int extra_size = 8*(chunks+1);
 391         uint32_t data_size = len-1-extra_size;
 392         unsigned char* dp_data=buf+extra_size;
 393         uint32_t* extra=(uint32_t*)buf;
 394         int i;
 395
 396         unsigned int transform_out[5];
 397         transform_in_t transform_in={
 398                 data_size,      // length of the packet (sub-packets appended)
 399                 0,              // unknown, seems to be unused
 400                 chunks, // number of sub-packets - 1
 401                 extra,          // table of sub-packet offsets
 402                 0,              // unknown, seems to be unused
 403                 0,              // timestamp (should be unneded)
 404         };
 405
 406         if(len<=0 || flags&2) return NULL; // skipped frame || hardframedrop
 407
 408         if (bufsz < sh->disp_w*sh->disp_h*3/2) {
 409             if (buffer) free(buffer);
 410             bufsz = sh->disp_w*sh->disp_h*3/2;
 411             buffer=malloc(bufsz);
 412             if (!buffer) return 0;
 413         }
 414
 415         for (i=0; i<2*(chunks+1); i++)
 416                 extra[i] = le2me_32(extra[i]);
 417
 418 #ifdef CONFIG_WIN32DLL
 419         if (dll_type == 1)
 420             result=(*wrvyuv_transform)(dp_data, buffer, &transform_in,
 421                 transform_out, sh->context);
 422         else
 423 #endif
 424         result=(*rvyuv_transform)(dp_data, buffer, &transform_in,
 425                 transform_out, sh->context);
 426
 427         if(!initialized){  // rv30 width/height now known
 428             sh->aspect=(float)sh->disp_w/(float)sh->disp_h;
 429             sh->disp_w=transform_out[3];
 430             sh->disp_h=transform_out[4];
 431             if (!mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_I420)) return 0;
 432             initialized=1;
 433         }
 434             mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, 0 /*MP_IMGFLAG_ACCEPT_STRIDE*/,
 435                     sh->disp_w, sh->disp_h);
 436             if(!mpi) return NULL;
 437             mpi->planes[0] = buffer;
 438             mpi->stride[0] = sh->disp_w;
 439             mpi->planes[1] = buffer + sh->disp_w*sh->disp_h;
 440             mpi->stride[1] = sh->disp_w / 2;
 441             mpi->planes[2] = buffer + sh->disp_w*sh->disp_h*5/4;
 442             mpi->stride[2] = sh->disp_w / 2;
 443
 444         if(transform_out[0] &&
 445            (sh->disp_w != transform_out[3] || sh->disp_h != transform_out[4]))
 446             initialized = 0;
 447
 448         return result ? NULL : mpi;
 449 }