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mpv/loader/ext.c
wm4 24be34f1e9 cleanup: Silence compilation warnings on MinGW-w64 
Some of the code, especially the dshow and windows codec loader parts,
are extremely hacky and likely full of bugs. The goal is merely getting
rid of warnings that could obscure more important warnings and actual
bugs, instead of fixing actual problems. This reduces the number of
warnings from over 500 to almost the same as when compiling on Linux.

Note that many problems stem from using the ancient wine-derived
windows headers. There are some differences to the "proper" windows
header. Changing the code to compile with the proper headers would be
too much trouble, and it still has to work on Unix.

Some of the changes might actually break compilation on legacy MinGW,
but we don't support that anymore. Always use MinGW-w64, even when
compiling to 32 bit.

Fixes some warnings in the win32 loader code on Linux too.
2012-03-01 00:22:30 +02:00

594 lines
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/********************************************************
*
*
* Stub functions for Wine module
*
*
********************************************************/
/*
* Modified for use with MPlayer, detailed changelog at
* http://svn.mplayerhq.hu/mplayer/trunk/
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#else
#include "osdep/mmap.h"
#endif
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include "osdep/mmap_anon.h"
#include "wine/windef.h"
#include "wine/winbase.h"
#include "wine/debugtools.h"
#include "wine/heap.h"
#include "ext.h"
#if 0
//REMOVE SIMPLIFY
static void* mymalloc(unsigned int size)
{
printf("malloc %d\n", size);
return malloc(size);
}
#undef malloc
#define malloc mymalloc
#endif
int dbg_header_err( const char *dbg_channel, const char *func )
{
return 0;
}
int dbg_header_warn( const char *dbg_channel, const char *func )
{
return 0;
}
int dbg_header_fixme( const char *dbg_channel, const char *func )
{
return 0;
}
int dbg_header_trace( const char *dbg_channel, const char *func )
{
return 0;
}
int dbg_vprintf( const char *format, va_list args )
{
return 0;
}
int __vprintf( const char *format, ... )
{
#ifdef DETAILED_OUT
va_list va;
va_start(va, format);
vprintf(format, va);
va_end(va);
#endif
return 0;
}
HANDLE WINAPI GetProcessHeap(void)
{
return 1;
}
LPVOID WINAPI HeapAlloc(HANDLE heap, DWORD flags, DWORD size)
{
//static int i = 5;
void* m = (flags & 0x8) ? calloc(size, 1) : malloc(size);
//printf("HeapAlloc %p %d (%d)\n", m, size, flags);
//if (--i == 0)
// abort();
return m;
}
WIN_BOOL WINAPI HeapFree(HANDLE heap, DWORD flags, LPVOID mem)
{
free(mem);
//printf("HeapFree %p\n", mem);
//if (!mem)
// abort();
return 1;
}
static int last_error;
DWORD WINAPI GetLastError(void)
{
return last_error;
}
VOID WINAPI SetLastError(DWORD error)
{
last_error=error;
}
WIN_BOOL WINAPI ReadFile(HANDLE handle, LPVOID mem, DWORD size, LPDWORD result, LPOVERLAPPED flags)
{
*result=read(handle, mem, size);
return *result;
}
INT WINAPI lstrcmpiA(LPCSTR c1, LPCSTR c2)
{
return strcasecmp(c1,c2);
}
LPSTR WINAPI lstrcpynA(LPSTR dest, LPCSTR src, INT num)
{
return strncpy(dest,src,num);
}
INT WINAPI lstrlenA(LPCSTR s)
{
return strlen(s);
}
INT WINAPI lstrlenW(LPCWSTR s)
{
int l;
if(!s)
return 0;
l=0;
while(s[l])
l++;
return l;
}
LPSTR WINAPI lstrcpynWtoA(LPSTR dest, LPCWSTR src, INT count)
{
LPSTR result = dest;
int moved=0;
if((dest==0) || (src==0))
return 0;
while(moved<count)
{
*dest=*src;
moved++;
if(*src==0)
break;
src++;
dest++;
}
return result;
}
/* i stands here for ignore case! */
int wcsnicmp(const unsigned short* s1, const unsigned short* s2, int n)
{
/*
if(s1==0)
return;
if(s2==0)
return;
*/
while(n>0)
{
if (((*s1 | *s2) & 0xff00) || toupper((char)*s1) != toupper((char)*s2))
{
if(*s1<*s2)
return -1;
else
if(*s1>*s2)
return 1;
else
if(*s1==0)
return 0;
}
s1++;
s2++;
n--;
}
return 0;
}
WIN_BOOL WINAPI IsBadReadPtr(LPCVOID data, UINT size)
{
if(size==0)
return 0;
if(data==NULL)
return 1;
return 0;
}
LPSTR HEAP_strdupA(HANDLE heap, DWORD flags, LPCSTR string)
{
// return strdup(string);
char* answ = malloc(strlen(string) + 1);
strcpy(answ, string);
return answ;
}
LPWSTR HEAP_strdupAtoW(HANDLE heap, DWORD flags, LPCSTR string)
{
int size, i;
WCHAR* answer;
if(string==0)
return 0;
size=strlen(string);
answer = malloc(sizeof(WCHAR) * (size + 1));
for(i=0; i<=size; i++)
answer[i]=(short)string[i];
return answer;
}
LPSTR HEAP_strdupWtoA(HANDLE heap, DWORD flags, LPCWSTR string)
{
int size, i;
char* answer;
if(string==0)
return 0;
size=0;
while(string[size])
size++;
answer = malloc(size + 2);
for(i=0; i<=size; i++)
answer[i]=(char)string[i];
return answer;
}
/***********************************************************************
* FILE_dommap
*/
//#define MAP_PRIVATE
//#define MAP_SHARED
LPVOID FILE_dommap( int unix_handle, LPVOID start,
DWORD size_high, DWORD size_low,
DWORD offset_high, DWORD offset_low,
int prot, int flags )
{
int fd = -1;
int pos;
LPVOID ret;
if (size_high || offset_high)
printf("offsets larger than 4Gb not supported\n");
if (unix_handle == -1)
{
ret = mmap_anon( start, size_low, prot, flags, offset_low );
}
else
{
fd = unix_handle;
ret = mmap( start, size_low, prot, flags, fd, offset_low );
}
if (ret != (LPVOID)-1)
{
// printf("address %08x\n", *(int*)ret);
// printf("%x\n", ret);
return ret;
}
// printf("mmap %d\n", errno);
/* mmap() failed; if this is because the file offset is not */
/* page-aligned (EINVAL), or because the underlying filesystem */
/* does not support mmap() (ENOEXEC), we do it by hand. */
if (unix_handle == -1) return ret;
if ((errno != ENOEXEC) && (errno != EINVAL)) return ret;
if (prot & PROT_WRITE)
{
/* We cannot fake shared write mappings */
#ifdef MAP_SHARED
if (flags & MAP_SHARED) return ret;
#endif
#ifdef MAP_PRIVATE
if (!(flags & MAP_PRIVATE)) return ret;
#endif
}
/* printf( "FILE_mmap: mmap failed (%d), faking it\n", errno );*/
/* Reserve the memory with an anonymous mmap */
ret = FILE_dommap( -1, start, size_high, size_low, 0, 0,
PROT_READ | PROT_WRITE, flags );
if (ret == (LPVOID)-1)
// {
// perror(
return ret;
/* Now read in the file */
if ((pos = lseek( fd, offset_low, SEEK_SET )) == -1)
{
FILE_munmap( ret, size_high, size_low );
// printf("lseek\n");
return (LPVOID)-1;
}
read( fd, ret, size_low );
lseek( fd, pos, SEEK_SET ); /* Restore the file pointer */
mprotect( ret, size_low, prot ); /* Set the right protection */
// printf("address %08x\n", *(int*)ret);
return ret;
}
/***********************************************************************
* FILE_munmap
*/
int FILE_munmap( LPVOID start, DWORD size_high, DWORD size_low )
{
if (size_high)
printf("offsets larger than 4Gb not supported\n");
return munmap( start, size_low );
}
struct file_mapping_s;
typedef struct file_mapping_s
{
int mapping_size;
char* name;
LPVOID handle;
struct file_mapping_s* next;
struct file_mapping_s* prev;
}file_mapping;
static file_mapping* fm=0;
#define PAGE_NOACCESS 0x01
#define PAGE_READONLY 0x02
#define PAGE_READWRITE 0x04
#define PAGE_WRITECOPY 0x08
#define PAGE_EXECUTE 0x10
#define PAGE_EXECUTE_READ 0x20
#define PAGE_EXECUTE_READWRITE 0x40
#define PAGE_EXECUTE_WRITECOPY 0x80
#define PAGE_GUARD 0x100
#define PAGE_NOCACHE 0x200
HANDLE WINAPI CreateFileMappingA(HANDLE handle, LPSECURITY_ATTRIBUTES lpAttr,
DWORD flProtect,
DWORD dwMaxHigh, DWORD dwMaxLow,
LPCSTR name)
{
int hFile = (int)handle;
unsigned int len;
LPVOID answer;
int anon=0;
int mmap_access=0;
if(hFile<0)
anon=1;
if(!anon)
{
len=lseek(hFile, 0, SEEK_END);
lseek(hFile, 0, SEEK_SET);
}
else len=dwMaxLow;
if(flProtect & PAGE_READONLY)
mmap_access |=PROT_READ;
else
mmap_access |=PROT_READ|PROT_WRITE;
if(anon)
answer=mmap_anon(NULL, len, mmap_access, MAP_PRIVATE, 0);
else
answer=mmap(NULL, len, mmap_access, MAP_PRIVATE, hFile, 0);
if(answer!=(LPVOID)-1)
{
if(fm==0)
{
fm = malloc(sizeof(file_mapping));
fm->prev=NULL;
}
else
{
fm->next = malloc(sizeof(file_mapping));
fm->next->prev=fm;
fm=fm->next;
}
fm->next=NULL;
fm->handle=answer;
if(name)
{
fm->name = malloc(strlen(name)+1);
strcpy(fm->name, name);
}
else
fm->name=NULL;
fm->mapping_size=len;
return (HANDLE)answer;
}
return (HANDLE)0;
}
WIN_BOOL WINAPI UnmapViewOfFile(LPVOID handle)
{
file_mapping* p;
int result;
if(fm==0)
return 0;
for(p=fm; p; p=p->next)
{
if(p->handle==handle)
{
result=munmap((void*)handle, p->mapping_size);
if(p->next)p->next->prev=p->prev;
if(p->prev)p->prev->next=p->next;
free(p->name);
if(p==fm)
fm=p->prev;
free(p);
return result;
}
}
return 0;
}
//static int va_size=0;
struct virt_alloc_s;
typedef struct virt_alloc_s
{
int mapping_size;
char* address;
struct virt_alloc_s* next;
struct virt_alloc_s* prev;
int state;
}virt_alloc;
static virt_alloc* vm=0;
#define MEM_COMMIT 0x00001000
#define MEM_RESERVE 0x00002000
LPVOID WINAPI VirtualAlloc(LPVOID address, DWORD size, DWORD type, DWORD protection)
{
void* answer;
long pgsz;
//printf("VirtualAlloc(0x%08X, %u, 0x%08X, 0x%08X)\n", (unsigned)address, size, type, protection);
if ((type&(MEM_RESERVE|MEM_COMMIT)) == 0) return NULL;
if (type&MEM_RESERVE && (unsigned)address&0xffff) {
size += (unsigned)address&0xffff;
address = (void*)((unsigned)address&~0xffff);
}
pgsz = sysconf(_SC_PAGESIZE);
if (type&MEM_COMMIT && (unsigned)address%pgsz) {
size += (unsigned)address%pgsz;
address = (void*)((unsigned)address - (unsigned)address%pgsz);
}
if (type&MEM_RESERVE && size<0x10000) size = 0x10000;
if (size%pgsz) size += pgsz - size%pgsz;
if(address!=0)
{
//check whether we can allow to allocate this
virt_alloc* str=vm;
while(str)
{
if((unsigned)address>=(unsigned)str->address+str->mapping_size)
{
str=str->prev;
continue;
}
if((unsigned)address+size<=(unsigned)str->address)
{
str=str->prev;
continue;
}
if(str->state==0)
{
// FIXME
if( ((unsigned)address >= (unsigned)str->address)
&& ((unsigned)address+size<=(unsigned)str->address+str->mapping_size)
&& (type & MEM_COMMIT))
{
return address; //returning previously reserved memory
}
//printf(" VirtualAlloc(...) does not commit or not entirely within reserved, and\n");
}
/*printf(" VirtualAlloc(...) (0x%08X, %u) overlaps with (0x%08X, %u, state=%d)\n",
(unsigned)address, size, (unsigned)str->address, str->mapping_size, str->state);*/
return NULL;
}
}
answer=mmap_anon(address, size, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE, 0);
// answer=FILE_dommap(-1, address, 0, size, 0, 0,
// PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE);
if (answer != (void *)-1 && address && answer != address) {
/* It is dangerous to try mmap() with MAP_FIXED since it does not
always detect conflicts or non-allocation and chaos ensues after
a successful call but an overlapping or non-allocated region. */
munmap(answer, size);
answer = (void *) -1;
errno = EINVAL;
//printf(" VirtualAlloc(...) cannot satisfy requested address but address=NULL would work.\n");
}
if(answer==(void*)-1)
{
/*printf(" VirtualAlloc(...) mmap(0x%08X, %u, ...) failed with errno=%d (\"%s\")\n",
(unsigned)address, size, errno, strerror(errno));*/
return NULL;
}
else
{
virt_alloc *new_vm = malloc(sizeof(virt_alloc));
new_vm->mapping_size=size;
new_vm->address=(char*)answer;
new_vm->prev=vm;
if(type == MEM_RESERVE)
new_vm->state=0;
else
new_vm->state=1;
if(vm)
vm->next=new_vm;
vm=new_vm;
vm->next=0;
//if(va_size!=0)
// printf("Multiple VirtualAlloc!\n");
//printf(" VirtualAlloc(...) provides (0x%08X, %u)\n", (unsigned)answer, size);
return answer;
}
}
WIN_BOOL WINAPI VirtualFree(LPVOID address, SIZE_T dwSize, DWORD dwFreeType)//not sure
{
virt_alloc* str=vm;
//printf("VirtualFree(0x%08X, %d, 0x%08X)\n", (unsigned)address, dwSize, dwFreeType);
while(str)
{
if(address!=str->address)
{
str=str->prev;
continue;
}
//printf(" VirtualFree(...) munmap(0x%08X, %d)\n", (unsigned)str->address, str->mapping_size);
munmap(str->address, str->mapping_size);
if(str->next)str->next->prev=str->prev;
if(str->prev)str->prev->next=str->next;
if(vm==str)vm=str->prev;
free(str);
return 0;
}
return -1;
}
INT WINAPI WideCharToMultiByte(UINT codepage, DWORD flags, LPCWSTR src,
INT srclen,LPSTR dest, INT destlen, LPCSTR defch, WIN_BOOL* used_defch)
{
int i;
if(srclen==-1){srclen=0; while(src[srclen++]);}
if(destlen==0)
return srclen;
if(used_defch)
*used_defch=0;
for(i=0; i<min(srclen, destlen); i++)
*dest++=(char)*src++;
return min(srclen, destlen);
}
INT WINAPI MultiByteToWideChar(UINT codepage,DWORD flags, LPCSTR src, INT srclen,
LPWSTR dest, INT destlen)
{
int i;
if(srclen==-1){srclen=0; while(src[srclen++]);}
if(destlen==0)
return srclen;
for(i=0; i<min(srclen, destlen); i++)
*dest++=(WCHAR)*src++;
return min(srclen, destlen);
}
HANDLE WINAPI OpenFileMappingA(DWORD access, WIN_BOOL prot, LPCSTR name)
{
file_mapping* p;
if(fm==0)
return (HANDLE)0;
if(name==0)
return (HANDLE)0;
for(p=fm; p; p=p->prev)
{
if(p->name==0)
continue;
if(strcmp(p->name, name)==0)
return (HANDLE)p->handle;
}
return 0;
}
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