Remove win32/qt/xanim/real binary codecs loading

Remove the win32 loader - the win32 emulation layer, as well as the
code for using DirectShow/DMO/VFW codecs. Remove loading of xanim,
QuickTime, and RealMedia codecs.

The win32 emulation layer is based on a very old version of wine.
Apparently, wine code was copied and hacked until it was somehow able
to load a limited collection of binary codecs. It poked around in the
code segment of some known binary codecs to disable unsupported win32
API calls to make them work. Example from module.c:

    for (i=0;i<5;i++)  RVA(0x19e842)[i]=0x90; // make_new_region ?
    for (i=0;i<28;i++) RVA(0x19e86d)[i]=0x90; // call__call_CreateCompatibleDC ?
    for (i=0;i<5;i++)  RVA(0x19e898)[i]=0x90; // jmp_to_call_loadbitmap ?
    for (i=0;i<9;i++)  RVA(0x19e8ac)[i]=0x90; // call__calls_OLE_shit ?
    for (i=0;i<106;i++) RVA(0x261b10)[i]=0x90; // disable threads

Just to show how utterly insane this code is. You wouldn't want even
your worst enemy to have to maintain this. In fact, it seems nobody
made major changes to this code ever since it was committed.

Most formats can be decoded by libavcodecs these days, and the loader
couldn't be used on 64 bit platforms anyway. The same is (probably)
true for the other binary codecs.

General note about how support for win32 codecs could be added back:

It's not possible to replace the win32 loader code by using wine as
library, because modern wine can not be linked with native Linux
programs for certain reasons. It would be possible to to move DirectShow
video decoding into a separate process linked with wine, like the
CoreAVC-for-Linux patches do. There is also the mplayer-ww fork, which
uses the dshownative library to use DirectShow codecs on Windows.

1 files changed, 0 insertions, 92 deletions

diff --git a/loader/wine/ldt.h b/loader/wine/ldt.h
deleted file mode 100644
index e607085f33..0000000000
--- a/loader/wine/ldt.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * LDT copy
- *
- * Copyright 1995 Alexandre Julliard
- */
-
-#ifndef MPLAYER_LDT_H
-#define MPLAYER_LDT_H
-
-#include "windef.h"
-enum seg_type
-{
-    SEGMENT_DATA  = 0,
-    SEGMENT_STACK = 1,
-    SEGMENT_CODE  = 2
-};
-
-  /* This structure represents a real LDT entry.        */
-  /* It is used by get_ldt_entry() and set_ldt_entry(). */
-typedef struct
-{
-    unsigned long base;            /* base address */
-    unsigned long limit;           /* segment limit (in pages or bytes) */
-    int           seg_32bit;       /* is segment 32-bit? */
-    int           read_only;       /* is segment read-only? */
-    int           limit_in_pages;  /* is the limit in pages or bytes? */
-    enum seg_type type;            /* segment type */
-} ldt_entry;
-void LDT_BytesToEntry( const unsigned long *buffer, ldt_entry *content );
-void LDT_EntryToBytes( unsigned long *buffer, const ldt_entry *content );
-int LDT_GetEntry( int entry, ldt_entry *content );
-int LDT_SetEntry( int entry, const ldt_entry *content );
-void LDT_Print( int start, int length );
-
-
-  /* This structure is used to build the local copy of the LDT. */
-typedef struct
-{
-    unsigned long base;    /* base address or 0 if entry is free   */
-    unsigned long limit;   /* limit in bytes or 0 if entry is free */
-} ldt_copy_entry;
-
-#define LDT_SIZE  8192
-
-extern ldt_copy_entry ldt_copy[LDT_SIZE];
-
-#define AHSHIFT  3  /* don't change! */
-#define AHINCR   (1 << AHSHIFT)
-
-#define SELECTOR_TO_ENTRY(sel)  (((int)(sel) & 0xffff) >> AHSHIFT)
-#define ENTRY_TO_SELECTOR(i)    ((i) ? (((int)(i) << AHSHIFT) | 7) : 0)
-#define IS_LDT_ENTRY_FREE(i)    (!(ldt_flags_copy[(i)] & LDT_FLAGS_ALLOCATED))
-#define IS_SELECTOR_FREE(sel)   (IS_LDT_ENTRY_FREE(SELECTOR_TO_ENTRY(sel)))
-#define GET_SEL_BASE(sel)       (ldt_copy[SELECTOR_TO_ENTRY(sel)].base)
-#define GET_SEL_LIMIT(sel)      (ldt_copy[SELECTOR_TO_ENTRY(sel)].limit)
-
-/* Convert a segmented ptr (16:16) to a linear (32) pointer */
-
-#define PTR_SEG_OFF_TO_LIN(seg,off) \
-   ((void*)(GET_SEL_BASE(seg) + (unsigned int)(off)))
-#define PTR_SEG_TO_LIN(ptr) \
-   PTR_SEG_OFF_TO_LIN(SELECTOROF(ptr),OFFSETOF(ptr))
-#define PTR_SEG_OFF_TO_SEGPTR(seg,off) \
-   ((SEGPTR)MAKELONG(off,seg))
-#define PTR_SEG_OFF_TO_HUGEPTR(seg,off) \
-   PTR_SEG_OFF_TO_SEGPTR( (seg) + (HIWORD(off) << AHSHIFT), LOWORD(off) )
-
-#define W32S_APPLICATION() (PROCESS_Current()->flags & PDB32_WIN32S_PROC)
-#define W32S_OFFSET 0x10000
-#define W32S_APP2WINE(addr, offset) ((addr)? (DWORD)(addr) + (DWORD)(offset) : 0)
-#define W32S_WINE2APP(addr, offset) ((addr)? (DWORD)(addr) - (DWORD)(offset) : 0)
-
-extern unsigned char ldt_flags_copy[LDT_SIZE];
-
-#define LDT_FLAGS_TYPE      0x03  /* Mask for segment type */
-#define LDT_FLAGS_READONLY  0x04  /* Segment is read-only (data) */
-#define LDT_FLAGS_EXECONLY  0x04  /* Segment is execute-only (code) */
-#define LDT_FLAGS_32BIT     0x08  /* Segment is 32-bit (code or stack) */
-#define LDT_FLAGS_BIG       0x10  /* Segment is big (limit is in pages) */
-#define LDT_FLAGS_ALLOCATED 0x80  /* Segment is allocated (no longer free) */
-
-#define GET_SEL_FLAGS(sel)   (ldt_flags_copy[SELECTOR_TO_ENTRY(sel)])
-
-#define FIRST_LDT_ENTRY_TO_ALLOC  17
-
-/* Determine if sel is a system selector (i.e. not managed by Wine) */
-#define IS_SELECTOR_SYSTEM(sel) \
-   (!((sel) & 4) || (SELECTOR_TO_ENTRY(sel) < FIRST_LDT_ENTRY_TO_ALLOC))
-#define IS_SELECTOR_32BIT(sel) \
-   (IS_SELECTOR_SYSTEM(sel) || (GET_SEL_FLAGS(sel) & LDT_FLAGS_32BIT))
-
-#endif /* MPLAYER_LDT_H */