vd_realvid.c

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#include <uclib.h>
#include <uclib.h>

#include "config.h"
#define HAVE_LIBDL
#ifdef HAVE_LIBDL
//#include <dlfcn.h>
#endif

#include "mp_msg.h"
#include "help_mp.h"

#include "vd_internal.h"
#include "loader/wine/windef.h"
#undef memcpy
#define memcpy uc_memcpy
static vd_info_t info = {
	"RealVideo decoder",
	"realvid",
	"Alex Beregszaszi",
	"Florian Schneider, Arpad Gereoffy, Alex Beregszaszi, Donnie Smith",
	"binary real video codecs"
};
#ifndef HX_RESULT
typedef int HX_RESULT;
#endif /* #ifndef HX_RESULT */

extern HX_RESULT _RV40toYUV420CustomMessage(unsigned int *msg_id, void *global);

extern HX_RESULT _RV40toYUV420HiveMessage(unsigned int *msg_id, void *global);

extern HX_RESULT _RV40toYUV420Transform    (
    unsigned char     *pRV20Packets,
    unsigned char     *pDecodedFrameBuffer,
    void      *pInputParams,
    void      *pOutputParams,
    void      *global
    );

extern HX_RESULT _RV40toYUV420Free(void *global);

extern HX_RESULT _RV40toYUV420Init(void *prv10Init, void **decoderState);

LIBVD_EXTERN(realvid)

#ifdef USE_16M_SDRAM
vd_functions_t *func_table (void)
{
  return &mpcodecs_vd_realvid;
}
#endif

/*
 * Structures for data packets.  These used to be tables of unsigned ints, but
 * that does not work on 64 bit platforms (e.g. Alpha).  The entries that are
 * pointers get truncated.  Pointers on 64 bit platforms are 8 byte longs.
 * So we have to use structures so the compiler will assign the proper space
 * for the pointer.
 */
typedef struct cmsg_data_s {
	uint32_t data1;
	uint32_t data2;
	uint32_t* dimensions;
} cmsg_data_t;

typedef struct transform_in_s {
	uint32_t len;
	uint32_t unknown1;
	uint32_t chunks;
	uint32_t* extra;
	uint32_t unknown2;
	uint32_t timestamp;
} transform_in_t;

static unsigned long (*rvyuv_custom_message)(cmsg_data_t* ,void*);
static unsigned long (*rvyuv_free)(void*);
static unsigned long (*rvyuv_init)(void*, void*); // initdata,context
static unsigned long (*rvyuv_transform)(char*, char*,transform_in_t*,unsigned int*,void*);
#ifdef USE_WIN32DLL
static unsigned long WINAPI (*wrvyuv_custom_message)(cmsg_data_t* ,void*);
static unsigned long WINAPI (*wrvyuv_free)(void*);
static unsigned long WINAPI (*wrvyuv_init)(void*, void*); // initdata,context
static unsigned long WINAPI (*wrvyuv_transform)(char*, char*,transform_in_t*,unsigned int*,void*);
#endif

static void *rv_handle=NULL;
static int inited=0;

static uint32_t *buffer = NULL;
//static int bufsz = 0;
#ifdef USE_WIN32DLL
static int dll_type = 0; /* 0 = unix dlopen, 1 = win32 dll */
#endif

void *__builtin_vec_new(unsigned long size) {
	return malloc(size);
}

void __builtin_vec_delete(void *mem) {
	free(mem);
}

void __pure_virtual(void) {
	printf("FATAL: __pure_virtual() called!\n");
//	exit(1);
}

#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
void ___brk_addr(void) {exit(0);}
char **__environ={NULL};
#undef stderr
FILE *stderr=NULL;
#endif

// to set/get/query special features/parameters
static int control(sh_video_t *sh,int cmd,void* arg,...){
//    switch(cmd){
//    case VDCTRL_QUERY_MAX_PP_LEVEL:
//	return 9;
//    case VDCTRL_SET_PP_LEVEL:
//	vfw_set_postproc(sh,10*(*((int*)arg)));
//	return CONTROL_OK;
//    }
    return CONTROL_UNKNOWN;
}

/* exits program when failure */
#ifdef HAVE_LIBDL

static int load_syms_linux(char *path) {
#if 0	
		void *handle;

		mp_msg(MSGT_DECVIDEO,MSGL_V, "opening shared obj '%s'\n", path);
		handle = dlopen (path, RTLD_LAZY);
		if (!handle) {
			mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error: %s\n",dlerror());
			return 0;
		}

		rvyuv_custom_message = dlsym(handle, "RV20toYUV420CustomMessage");
		rvyuv_free = dlsym(handle, "RV20toYUV420Free");
		rvyuv_init = dlsym(handle, "RV20toYUV420Init");
		rvyuv_transform = dlsym(handle, "RV20toYUV420Transform");

    if(rvyuv_custom_message &&
       rvyuv_free &&
       rvyuv_init &&
       rvyuv_transform)
    {
	rv_handle = handle;
	return 1;
    }
	
		rvyuv_custom_message = dlsym(handle, "RV40toYUV420CustomMessage");
		rvyuv_free = dlsym(handle, "RV40toYUV420Free");
		rvyuv_init = dlsym(handle, "RV40toYUV420Init");
		rvyuv_transform = dlsym(handle, "RV40toYUV420Transform");
#endif

		//rvyuv_custom_message = dlsym(handle, "RV40toYUV420CustomMessage");
		//rvyuv_free = dlsym(handle, "RV40toYUV420Free");
		//rvyuv_init = dlsym(handle, "RV40toYUV420Init");
		//rvyuv_transform = dlsym(handle, "RV40toYUV420Transform");


		rvyuv_custom_message = _RV40toYUV420CustomMessage;
		rvyuv_free = _RV40toYUV420Free;
		rvyuv_init = _RV40toYUV420Init;
		rvyuv_transform = _RV40toYUV420Transform;

		
    if(rvyuv_custom_message &&
       rvyuv_free &&
       rvyuv_init &&
       rvyuv_transform)
    {
	rv_handle = 0;
	return 1;
    }

    mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error resolving symbols! (version incompatibility?)\n");
    //dlclose(handle);
    return 0;
}
#endif

#ifdef USE_WIN32DLL

#ifdef WIN32_LOADER
#include "loader/ldt_keeper.h"
#endif
void* WINAPI LoadLibraryA(char* name);
void* WINAPI GetProcAddress(void* handle,char* func);
int WINAPI FreeLibrary(void *handle);

#ifndef WIN32_LOADER
void * WINAPI GetModuleHandleA(char *);
static int patch_dll(uint8_t *patchpos, const uint8_t *oldcode,
                     const uint8_t *newcode, int codesize) {
  void *handle = GetModuleHandleA("kernel32");
  int WINAPI (*VirtProt)(void *, unsigned, int, int *);
  int res = 0;
  int prot, tmp;
  VirtProt = GetProcAddress(handle, "VirtualProtect");
  // change permissions to PAGE_WRITECOPY
  if (!VirtProt ||
      !VirtProt(patchpos, codesize, 0x08, &prot)) {
    mp_msg(MSGT_DECVIDEO, MSGL_WARN, "VirtualProtect failed at %p\n", patchpos);
    return 0;
  }
  if (memcmp(patchpos, oldcode, codesize) == 0) {
    memcpy(patchpos, newcode, codesize);
    res = 1;
  }
  VirtProt(patchpos, codesize, prot, &tmp);
  return res;
}
#endif

static int load_syms_windows(char *path) {
    void *handle;

    mp_msg(MSGT_DECVIDEO,MSGL_V, "opening win32 dll '%s'\n", path);
#ifdef WIN32_LOADER
    Setup_LDT_Keeper();
#endif
    handle = LoadLibraryA(path);
    mp_msg(MSGT_DECVIDEO,MSGL_V,"win32 real codec handle=%p  \n",handle);
    if (!handle) {
	mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error loading dll\n");
	return 0;
    }

    wrvyuv_custom_message = GetProcAddress(handle, "RV20toYUV420CustomMessage");
    wrvyuv_free = GetProcAddress(handle, "RV20toYUV420Free");
    wrvyuv_init = GetProcAddress(handle, "RV20toYUV420Init");
    wrvyuv_transform = GetProcAddress(handle, "RV20toYUV420Transform");

    if(wrvyuv_custom_message &&
       wrvyuv_free &&
       wrvyuv_init &&
       wrvyuv_transform)
    {
	dll_type = 1;
	rv_handle = handle;
#ifndef WIN32_LOADER
	{
	    int patched = 0;
	    // drv43260.dll
	    if (wrvyuv_transform == (void *)0x634114d0) {
		// patch away multithreaded decoding, it causes crashes
		static const uint8_t oldcode[13] = {
		    0x83, 0xbb, 0xf8, 0x05, 0x00, 0x00, 0x01,
		    0x0f, 0x86, 0xd0, 0x00, 0x00, 0x00 };
		static const uint8_t newcode[13] = {
		    0x31, 0xc0,
		    0x89, 0x83, 0xf8, 0x05, 0x00, 0x00,
		    0xe9, 0xd0, 0x00, 0x00, 0x00 };
		patched = patch_dll((void *)0x634132fa, oldcode, newcode,
		                    sizeof(oldcode));
	    }
	    if (!patched)
		mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Could not patch Real codec, this might crash on multi-CPU systems\n");
	}
#endif
	return 1;
    }
    mp_msg(MSGT_DECVIDEO,MSGL_WARN,"Error resolving symbols! (version incompatibility?)\n");
    FreeLibrary(handle);
    return 0; // error
}
#endif

/* we need exact positions */