libmpcodecs/vd_realvid.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 #include "config.h"
   5
   6 #ifdef HAVE_LIBDL
   7 #include <dlfcn.h>
   8 #endif
   9
  10 #include "mp_msg.h"
  11 #include "help_mp.h"
  12
  13 #include "vd_internal.h"
  14 #include "loader/wine/windef.h"
  15
  16 static vd_info_t info = {
  17         "RealVideo decoder",
  18         "realvid",
  19         "Alex Beregszaszi",
  20         "Florian Schneider, Arpad Gereoffy, Alex Beregszaszi, Donnie Smith",
  21         "binary real video codecs"
  22 };
  23
  24 LIBVD_EXTERN(realvid)
  25
  26
  27 /*
  28  * Structures for data packets.  These used to be tables of unsigned ints, but
  29  * that does not work on 64 bit platforms (e.g. Alpha).  The entries that are
  30  * pointers get truncated.  Pointers on 64 bit platforms are 8 byte longs.
  31  * So we have to use structures so the compiler will assign the proper space
  32  * for the pointer.
  33  */
  34 typedef struct cmsg_data_s {
  35         uint32_t data1;
  36         uint32_t data2;
  37         uint32_t* dimensions;
  38 } cmsg_data_t;
  39
  40 typedef struct transform_in_s {
  41         uint32_t len;
  42         uint32_t unknown1;
  43         uint32_t chunks;
  44         uint32_t* extra;
  45         uint32_t unknown2;
  46         uint32_t timestamp;
  47 } transform_in_t;
  48
  49 static unsigned long (*rvyuv_custom_message)(cmsg_data_t* ,void*);
  50 static unsigned long (*rvyuv_free)(void*);
  51 static unsigned long (*rvyuv_init)(void*, void*); // initdata,context
  52 static unsigned long (*rvyuv_transform)(char*, char*,transform_in_t*,unsigned int*,void*);
  53 #ifdef USE_WIN32DLL
  54 static unsigned long WINAPI (*wrvyuv_custom_message)(cmsg_data_t* ,void*);
  55 static unsigned long WINAPI (*wrvyuv_free)(void*);
  56 static unsigned long WINAPI (*wrvyuv_init)(void*, void*); // initdata,context
  57 static unsigned long WINAPI (*wrvyuv_transform)(char*, char*,transform_in_t*,unsigned int*,void*);
  58 #endif
  59
  60 static void *rv_handle=NULL;
  61 static int inited=0;
  62 static uint8_t *buffer = NULL;
  63 static int bufsz = 0;
  64 #ifdef USE_WIN32DLL
  65 static int dll_type = 0; /* 0 = unix dlopen, 1 = win32 dll */
  66 #endif
  67
  68 void *__builtin_vec_new(unsigned long size) {
  69         return malloc(size);
  70 }
  71
  72 void __builtin_vec_delete(void *mem) {
  73         free(mem);
  74 }
  75
  76 void __pure_virtual(void) {
  77         printf("FATAL: __pure_virtual() called!\n");
  78 //      exit(1);
  79 }
  80
  81 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
  82 void ___brk_addr(void) {exit(0);}
  83 char **__environ={NULL};
  84 #undef stderr
  85 FILE *stderr=NULL;
  86 #endif
  87
  88 // to set/get/query special features/parameters
  89 static int control(sh_video_t *sh,int cmd,void* arg,...){
  90 //    switch(cmd){
  91 //    case VDCTRL_QUERY_MAX_PP_LEVEL:
  92 //      return 9;
  93 //    case VDCTRL_SET_PP_LEVEL:
  94 //      vfw_set_postproc(sh,10*(*((int*)arg)));
  95 //      return CONTROL_OK;
  96 //    }
  97     return CONTROL_UNKNOWN;
  98 }
  99
 100 /* exits program when failure */
 101 #ifdef HAVE_LIBDL
 102 static int load_syms_linux(char *path) {
 103                 void *handle;
 104
 105                 mp_msg(MSGT_DECVIDEO,MSGL_V, "opening shared obj '%s'\n", path);
 106                 handle = dlopen (path, RTLD_LAZY);
 107                 if (!handle) {
 108                         mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error: %s\n",dlerror());
 109                         return 0;
 110                 }
 111
 112                 rvyuv_custom_message = dlsym(handle, "RV20toYUV420CustomMessage");
 113                 rvyuv_free = dlsym(handle, "RV20toYUV420Free");
 114                 rvyuv_init = dlsym(handle, "RV20toYUV420Init");
 115                 rvyuv_transform = dlsym(handle, "RV20toYUV420Transform");
 116
 117     if(rvyuv_custom_message &&
 118        rvyuv_free &&
 119        rvyuv_init &&
 120        rvyuv_transform)
 121     {
 122         rv_handle = handle;
 123         return 1;
 124     }
 125
 126                 rvyuv_custom_message = dlsym(handle, "RV40toYUV420CustomMessage");
 127                 rvyuv_free = dlsym(handle, "RV40toYUV420Free");
 128                 rvyuv_init = dlsym(handle, "RV40toYUV420Init");
 129                 rvyuv_transform = dlsym(handle, "RV40toYUV420Transform");
 130
 131     if(rvyuv_custom_message &&
 132        rvyuv_free &&
 133        rvyuv_init &&
 134        rvyuv_transform)
 135     {
 136         rv_handle = handle;
 137         return 1;
 138     }
 139
 140     mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error resolving symbols! (version incompatibility?)\n");
 141     dlclose(handle);
 142     return 0;
 143 }
 144 #endif
 145
 146 #ifdef USE_WIN32DLL
 147
 148 #ifdef WIN32_LOADER
 149 #include "loader/ldt_keeper.h"
 150 #endif
 151 void* WINAPI LoadLibraryA(char* name);
 152 void* WINAPI GetProcAddress(void* handle,char* func);
 153 int WINAPI FreeLibrary(void *handle);
 154
 155 #ifndef WIN32_LOADER
 156 void * WINAPI GetModuleHandleA(char *);
 157 static int patch_dll(uint8_t *patchpos, const uint8_t *oldcode,
 158                      const uint8_t *newcode, int codesize) {
 159   void *handle = GetModuleHandleA("kernel32");
 160   int WINAPI (*VirtProt)(void *, unsigned, int, int *);
 161   int res = 0;
 162   int prot, tmp;
 163   VirtProt = GetProcAddress(handle, "VirtualProtect");
 164   // change permissions to PAGE_WRITECOPY
 165   if (!VirtProt ||
 166       !VirtProt(patchpos, codesize, 0x08, &prot)) {
 167     mp_msg(MSGT_DECVIDEO, MSGL_WARN, "VirtualProtect failed at %p\n", patchpos);
 168     return 0;
 169   }
 170   if (memcmp(patchpos, oldcode, codesize) == 0) {
 171     memcpy(patchpos, newcode, codesize);
 172     res = 1;
 173   }
 174   VirtProt(patchpos, codesize, prot, &tmp);
 175   return res;
 176 }
 177 #endif
 178
 179 static int load_syms_windows(char *path) {
 180     void *handle;
 181
 182     mp_msg(MSGT_DECVIDEO,MSGL_V, "opening win32 dll '%s'\n", path);
 183 #ifdef WIN32_LOADER
 184     Setup_LDT_Keeper();
 185 #endif
 186     handle = LoadLibraryA(path);
 187     mp_msg(MSGT_DECVIDEO,MSGL_V,"win32 real codec handle=%p  \n",handle);
 188     if (!handle) {
 189         mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error loading dll\n");
 190         return 0;
 191     }
 192
 193     wrvyuv_custom_message = GetProcAddress(handle, "RV20toYUV420CustomMessage");
 194     wrvyuv_free = GetProcAddress(handle, "RV20toYUV420Free");
 195     wrvyuv_init = GetProcAddress(handle, "RV20toYUV420Init");
 196     wrvyuv_transform = GetProcAddress(handle, "RV20toYUV420Transform");
 197
 198     if(wrvyuv_custom_message &&
 199        wrvyuv_free &&
 200        wrvyuv_init &&
 201        wrvyuv_transform)
 202     {
 203         dll_type = 1;
 204         rv_handle = handle;
 205 #ifndef WIN32_LOADER
 206         {
 207             int patched = 0;
 208             // drv43260.dll
 209             if (wrvyuv_transform == (void *)0x634114d0) {
 210                 // patch away multithreaded decoding, it causes crashes
 211                 static const uint8_t oldcode[13] = {
 212                     0x83, 0xbb, 0xf8, 0x05, 0x00, 0x00, 0x01,
 213                     0x0f, 0x86, 0xd0, 0x00, 0x00, 0x00 };
 214                 static const uint8_t newcode[13] = {
 215                     0x31, 0xc0,
 216                     0x89, 0x83, 0xf8, 0x05, 0x00, 0x00,
 217                     0xe9, 0xd0, 0x00, 0x00, 0x00 };
 218                 patched = patch_dll((void *)0x634132fa, oldcode, newcode,
 219                                     sizeof(oldcode));
 220             }
 221             if (!patched)
 222                 mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Could not patch Real codec, this might crash on multi-CPU systems\n");
 223         }
 224 #endif
 225         return 1;
 226     }
 227     mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error resolving symbols! (version incompatibility?)\n");
 228     FreeLibrary(handle);
 229     return 0; // error
 230 }
 231 #endif
 232
 233 /* we need exact positions */
 234 struct rv_init_t {
 235         short unk1;
 236         short w;
 237         short h;
 238         short unk3;
 239         int unk2;
 240         int subformat;
 241         int unk5;
 242         int format;
 243 } rv_init_t;
 244
 245 // init driver
 246 static int init(sh_video_t *sh){
 247         //unsigned int out_fmt;
 248         char *path;
 249         int result;
 250         // we export codec id and sub-id from demuxer in bitmapinfohdr:
 251         unsigned char* extrahdr=(unsigned char*)(sh->bih+1);
 252         unsigned int extrahdr_size = sh->bih->biSize - sizeof(BITMAPINFOHEADER);
 253         struct rv_init_t init_data;
 254
 255         if(extrahdr_size < 8) {
 256             mp_msg(MSGT_DECVIDEO,MSGL_ERR,"realvideo: extradata too small (%u)\n", sh->bih->biSize - sizeof(BITMAPINFOHEADER));
 257             return 0;
 258         }
 259         init_data = (struct rv_init_t){11, sh->disp_w, sh->disp_h, 0, 0, be2me_32(((unsigned int*)extrahdr)[0]), 1, be2me_32(((unsigned int*)extrahdr)[1])}; // rv30
 260
 261         mp_msg(MSGT_DECVIDEO,MSGL_V,"realvideo codec id: 0x%08X  sub-id: 0x%08X\n",be2me_32(((unsigned int*)extrahdr)[1]),be2me_32(((unsigned int*)extrahdr)[0]));
 262
 263         path = malloc(strlen(REALCODEC_PATH)+strlen(sh->codec->dll)+2);
 264         if (!path) return 0;
 265         sprintf(path, REALCODEC_PATH "/%s", sh->codec->dll);
 266
 267         /* first try to load linux dlls, if failed and we're supporting win32 dlls,
 268            then try to load the windows ones */
 269 #ifdef HAVE_LIBDL
 270         if(strstr(sh->codec->dll,".dll") || !load_syms_linux(path))
 271 #endif
 272 #ifdef USE_WIN32DLL
 273             if (!load_syms_windows(sh->codec->dll))
 274 #endif
 275         {
 276                 mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MissingDLLcodec,sh->codec->dll);
 277                 mp_msg(MSGT_DECVIDEO,MSGL_HINT,"Read the RealVideo section of the DOCS!\n");
 278                 free(path);
 279                 return 0;
 280         }
 281         free(path);
 282         // only I420 supported
 283 //      if((sh->format!=0x30335652) && !mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_I420)) return 0;
 284         // init codec:
 285         sh->context=NULL;
 286 #ifdef USE_WIN32DLL
 287         if (dll_type == 1)
 288             result=(*wrvyuv_init)(&init_data, &sh->context);
 289         else
 290 #endif
 291         result=(*rvyuv_init)(&init_data, &sh->context);
 292         if (result){
 293             mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Couldn't open RealVideo codec, error code: 0x%X  \n",result);
 294             return 0;
 295         }
 296         // setup rv30 codec (codec sub-type and image dimensions):
 297         if((sh->format<=0x30335652) && (be2me_32(((unsigned int*)extrahdr)[1])>=0x20200002)){
 298             int i, cmsg_cnt;
 299             uint32_t cmsg24[16]={sh->disp_w,sh->disp_h};
 300             cmsg_data_t cmsg_data={0x24,1+(extrahdr[1]&7), &cmsg24[0]};
 301
 302             mp_msg(MSGT_DECVIDEO,MSGL_V,"realvideo: using cmsg24 with %u elements.\n",extrahdr[1]&7);
 303             cmsg_cnt = (extrahdr[1]&7)*2;
 304             if (extrahdr_size-8 < cmsg_cnt) {
 305                 mp_msg(MSGT_DECVIDEO,MSGL_WARN,"realvideo: not enough extradata (%u) to make %u cmsg24 elements.\n",extrahdr_size-8,extrahdr[1]&7);
 306                 cmsg_cnt = extrahdr_size-8;
 307             }
 308             for (i = 0; i < cmsg_cnt; i++)
 309                 cmsg24[2+i] = extrahdr[8+i]*4;
 310             if (extrahdr_size-8 > cmsg_cnt)
 311                 mp_msg(MSGT_DECVIDEO,MSGL_WARN,"realvideo: %u bytes of unknown extradata remaining.\n",extrahdr_size-8-cmsg_cnt);
 312
 313 #ifdef USE_WIN32DLL
 314             if (dll_type == 1)
 315                 (*wrvyuv_custom_message)(&cmsg_data,sh->context);
 316             else
 317 #endif
 318             (*rvyuv_custom_message)(&cmsg_data,sh->context);
 319         }
 320         mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: RealVideo codec init OK!\n");
 321         return 1;
 322 }
 323
 324 // uninit driver
 325 static void uninit(sh_video_t *sh){
 326 #ifdef USE_WIN32DLL
 327         if (dll_type == 1)
 328         {
 329             if (wrvyuv_free) wrvyuv_free(sh->context);
 330         } else
 331 #endif
 332         if(rvyuv_free) rvyuv_free(sh->context);
 333
 334 #ifdef USE_WIN32DLL
 335         if (dll_type == 1)
 336         {
 337             if (rv_handle) FreeLibrary(rv_handle);
 338         } else
 339 #endif
 340 #ifdef HAVE_LIBDL
 341         if(rv_handle) dlclose(rv_handle);
 342 #endif
 343         rv_handle=NULL;
 344         inited = 0;
 345         if (buffer)
 346             free(buffer);
 347         buffer = NULL;
 348         bufsz = 0;
 349 }
 350
 351 // copypaste from demux_real.c - it should match to get it working!
 352 typedef struct dp_hdr_s {
 353     uint32_t chunks;    // number of chunks
 354     uint32_t timestamp; // timestamp from packet header
 355     uint32_t len;       // length of actual data
 356     uint32_t chunktab;  // offset to chunk offset array
 357 } dp_hdr_t;
 358
 359 // decode a frame
 360 static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
 361         mp_image_t* mpi;
 362         unsigned long result;
 363         dp_hdr_t* dp_hdr=(dp_hdr_t*)data;
 364         unsigned char* dp_data=((unsigned char*)data)+sizeof(dp_hdr_t);
 365         uint32_t* extra=(uint32_t*)(((char*)data)+dp_hdr->chunktab);
 366
 367         unsigned int transform_out[5];
 368         transform_in_t transform_in={
 369                 dp_hdr->len,    // length of the packet (sub-packets appended)
 370                 0,              // unknown, seems to be unused
 371                 dp_hdr->chunks, // number of sub-packets - 1
 372                 extra,          // table of sub-packet offsets
 373                 0,              // unknown, seems to be unused
 374                 dp_hdr->timestamp,// timestamp (the integer value from the stream)
 375         };
 376
 377         if(len<=0 || flags&2) return NULL; // skipped frame || hardframedrop
 378
 379         if (bufsz < sh->disp_w*sh->disp_h*3/2) {
 380             if (buffer) free(buffer);
 381             bufsz = sh->disp_w*sh->disp_h*3/2;
 382             buffer=malloc(bufsz);
 383             if (!buffer) return 0;
 384         }
 385
 386 #ifdef USE_WIN32DLL
 387         if (dll_type == 1)
 388             result=(*wrvyuv_transform)(dp_data, buffer, &transform_in,
 389                 transform_out, sh->context);
 390         else
 391 #endif
 392         result=(*rvyuv_transform)(dp_data, buffer, &transform_in,
 393                 transform_out, sh->context);
 394
 395         if(!inited){  // rv30 width/height now known
 396             sh->aspect=(float)sh->disp_w/(float)sh->disp_h;
 397             sh->disp_w=transform_out[3];
 398             sh->disp_h=transform_out[4];
 399             if (!mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_I420)) return 0;
 400             inited=1;
 401         }
 402             mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, 0 /*MP_IMGFLAG_ACCEPT_STRIDE*/,
 403                     sh->disp_w, sh->disp_h);
 404             if(!mpi) return NULL;
 405             mpi->planes[0] = buffer;
 406             mpi->stride[0] = sh->disp_w;
 407             mpi->planes[1] = buffer + sh->disp_w*sh->disp_h;
 408             mpi->stride[1] = sh->disp_w / 2;
 409             mpi->planes[2] = buffer + sh->disp_w*sh->disp_h*5/4;
 410             mpi->stride[2] = sh->disp_w / 2;
 411
 412         if(transform_out[0] &&
 413            (sh->disp_w != transform_out[3] || sh->disp_h != transform_out[4]))
 414             inited = 0;
 415
 416         return (result?NULL:mpi);
 417 }