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, 463 deletions

diff --git a/libmpcodecs/ad_realaud.c b/libmpcodecs/ad_realaud.c
deleted file mode 100644
index 3f221c61ef..0000000000
--- a/libmpcodecs/ad_realaud.c
+++ /dev/null
@@ -1,463 +0,0 @@
-/*
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "config.h"
-
-//#include <stddef.h>
-#ifdef HAVE_LIBDL
-#include <dlfcn.h>
-#endif
-#include "path.h"
-#include "libavutil/attributes.h"
-#include "ad_internal.h"
-#include "loader/wine/windef.h"
-
-static const ad_info_t info = {
-	"RealAudio decoder",
-	"realaud",
-	"Alex Beregszaszi",
-	"Florian Schneider, Arpad Gereoffy, Alex Beregszaszi, Donnie Smith",
-	"binary real audio codecs"
-};
-
-LIBAD_EXTERN(realaud)
-
-void *__builtin_new(unsigned long size);
-void __builtin_delete(void *ize);
-
-void *__builtin_new(unsigned long size) {
-	return malloc(size);
-}
-
-// required for cook's uninit:
-void __builtin_delete(void* ize) {
-	free(ize);
-}
-
-#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
-void *__ctype_b=NULL;
-#endif
-
-static unsigned long (*raCloseCodec)(void*);
-static unsigned long (*raDecode)(void*, char*,unsigned long,char*,unsigned int*,long);
-static unsigned long (*raFreeDecoder)(void*);
-//static unsigned long (*raGetNumberOfFlavors2)(void);
-static unsigned long (*raInitDecoder)(void*, void*);
-static unsigned long (*raOpenCodec)(void*);
-static unsigned long (*raOpenCodec2)(void*, void*);
-static unsigned long (*raSetFlavor)(void*,unsigned long);
-static void  (*raSetDLLAccessPath)(char*);
-static void  (*raSetPwd)(char*,char*);
-#ifdef CONFIG_WIN32DLL
-static unsigned long WINAPI (*wraCloseCodec)(void*);
-static unsigned long WINAPI (*wraDecode)(void*, char*,unsigned long,char*,unsigned int*,long);
-static unsigned long WINAPI (*wraFreeDecoder)(void*);
-static unsigned long WINAPI (*wraInitDecoder)(void*, void*);
-static unsigned long WINAPI (*wraOpenCodec)(void*);
-static unsigned long WINAPI (*wraOpenCodec2)(void*, void*);
-static unsigned long WINAPI (*wraSetFlavor)(void*,unsigned long);
-static void          WINAPI (*wraSetDLLAccessPath)(char*);
-static void          WINAPI (*wraSetPwd)(char*,char*);
-
-static int dll_type = 0; /* 0 = unix dlopen, 1 = win32 dll */
-#endif
-
-static void *rv_handle = NULL;
-
-#if 0
-typedef struct {
-    int samplerate;
-    short bits;
-    short channels;
-    int unk1;
-    int unk2;
-    int packetsize;
-    int unk3;
-    void* unk4;
-} ra_init_t ;
-#else
-
-/*
- Probably the linux .so-s were compiled with old GCC without setting
- packing, so it adds 2 bytes padding after the quality field.
- In windows it seems that there's no padding in it.
-
- -- alex
-*/
-
-/* linux dlls doesn't need packing */
-typedef struct /*__attribute__((__packed__))*/ {
-    int samplerate;
-    short bits;
-    short channels;
-    short quality;
-    /* 2bytes padding here, by gcc */
-    int bits_per_frame;
-    int packetsize;
-    int extradata_len;
-    void* extradata;
-} ra_init_t;
-
-/* windows dlls need packed structs (no padding) */
-typedef struct __attribute__((__packed__)) {
-    int samplerate;
-    short bits;
-    short channels;
-    short quality;
-    int bits_per_frame;
-    int packetsize;
-    int extradata_len;
-    void* extradata;
-} wra_init_t;
-#endif
-
-#ifdef HAVE_LIBDL
-static int load_syms_linux(char *path)
-{
-    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;
-    }
-
-    raCloseCodec = dlsym(handle, "RACloseCodec");
-    raDecode = dlsym(handle, "RADecode");
-    raFreeDecoder = dlsym(handle, "RAFreeDecoder");
-    raOpenCodec = dlsym(handle, "RAOpenCodec");
-    raOpenCodec2 = dlsym(handle, "RAOpenCodec2");
-    raInitDecoder = dlsym(handle, "RAInitDecoder");
-    raSetFlavor = dlsym(handle, "RASetFlavor");
-    raSetDLLAccessPath = dlsym(handle, "SetDLLAccessPath");
-    raSetPwd = dlsym(handle, "RASetPwd"); // optional, used by SIPR
-
-    if (raCloseCodec && raDecode && raFreeDecoder &&
-	(raOpenCodec||raOpenCodec2) && raSetFlavor &&
-	/*raSetDLLAccessPath &&*/ raInitDecoder)
-    {
-	rv_handle = handle;
-	return 1;
-    }
-
-    mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Cannot resolve symbols - incompatible dll: %s\n",path);
-    dlclose(handle);
-    return 0;
-}
-#endif
-
-#ifdef CONFIG_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);
-
-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);
-    if (!handle)
-    {
-	mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Error loading dll\n");
-	return 0;
-    }
-
-    wraCloseCodec = GetProcAddress(handle, "RACloseCodec");
-    wraDecode = GetProcAddress(handle, "RADecode");
-    wraFreeDecoder = GetProcAddress(handle, "RAFreeDecoder");
-    wraOpenCodec = GetProcAddress(handle, "RAOpenCodec");
-    wraOpenCodec2 = GetProcAddress(handle, "RAOpenCodec2");
-    wraInitDecoder = GetProcAddress(handle, "RAInitDecoder");
-    wraSetFlavor = GetProcAddress(handle, "RASetFlavor");
-    wraSetDLLAccessPath = GetProcAddress(handle, "SetDLLAccessPath");
-    wraSetPwd = GetProcAddress(handle, "RASetPwd"); // optional, used by SIPR
-
-    if (wraCloseCodec && wraDecode && wraFreeDecoder &&
-	(wraOpenCodec || wraOpenCodec2) && wraSetFlavor &&
-	/*wraSetDLLAccessPath &&*/ wraInitDecoder)
-    {
-	rv_handle = handle;
-	dll_type = 1;
-	return 1;
-    }
-
-    mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Cannot resolve symbols - incompatible dll: %s\n",path);
-    FreeLibrary(handle);
-    return 0;
-
-}
-#endif
-
-
-static int preinit(sh_audio_t *sh){
-  // let's check if the driver is available, return 0 if not.
-  // (you should do that if you use external lib(s) which is optional)
-  unsigned int result;
-  char *path;
-
-  path = malloc(strlen(codec_path) + strlen(sh->codec->dll) + 2);
-  if (!path) return 0;
-  sprintf(path, "%s/%s", codec_path, sh->codec->dll);
-
-    /* first try to load linux dlls, if failed and we're supporting win32 dlls,
-       then try to load the windows ones */
-
-#ifdef HAVE_LIBDL
-    if (strstr(sh->codec->dll,".dll") || !load_syms_linux(path))
-#endif
-#ifdef CONFIG_WIN32DLL
-	if (!load_syms_windows(sh->codec->dll))
-#endif
-    {
-	mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "ERROR: Could not open required DirectShow codec %s.\n", sh->codec->dll);
-	mp_msg(MSGT_DECVIDEO, MSGL_HINT, "Read the RealAudio section of the DOCS!\n");
-	free(path);
-	return 0;
-    }
-
-#ifdef CONFIG_WIN32DLL
-  if((raSetDLLAccessPath && dll_type == 0) || (wraSetDLLAccessPath && dll_type == 1)){
-#else
-  if(raSetDLLAccessPath){
-#endif
-      // used by 'SIPR'
-      path = realloc(path, strlen(codec_path) + 13);
-      sprintf(path, "DT_Codecs=%s", codec_path);
-      if(path[strlen(path)-1]!='/'){
-        path[strlen(path)+1]=0;
-        path[strlen(path)]='/';
-      }
-      path[strlen(path)+1]=0;
-#ifdef CONFIG_WIN32DLL
-    if (dll_type == 1)
-    {
-      int i;
-      for (i=0; i < strlen(path); i++)
-        if (path[i] == '/') path[i] = '\\';
-      wraSetDLLAccessPath(path);
-    }
-    else
-#endif
-      raSetDLLAccessPath(path);
-  }
-
-#ifdef CONFIG_WIN32DLL
-    if (dll_type == 1){
-      if (wraOpenCodec2) {
-        sprintf(path, "%s\\", codec_path);
-        result = wraOpenCodec2(&sh->context, path);
-      } else
-	result=wraOpenCodec(&sh->context);
-    } else
-#endif
-    if (raOpenCodec2) {
-      sprintf(path, "%s/", codec_path);
-      result = raOpenCodec2(&sh->context, path);
-    } else
-      result=raOpenCodec(&sh->context);
-    if(result){
-      mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder open failed, error code: 0x%X\n",result);
-      return 0;
-    }
-//    printf("opencodec ok (result: %x)\n", result);
-  free(path); /* after this it isn't used anymore */
-
-  sh->samplerate=sh->wf->nSamplesPerSec;
-  sh->samplesize=sh->wf->wBitsPerSample/8;
-  sh->channels=sh->wf->nChannels;
-
-  {
-    ra_init_t init_data={
-	sh->wf->nSamplesPerSec,
-	sh->wf->wBitsPerSample,
-	sh->wf->nChannels,
-	100, // quality
-	sh->wf->nBlockAlign, // subpacket size
-	sh->wf->nBlockAlign, // coded frame size
-	sh->wf->cbSize, // codec data length
-	(char*)(sh->wf+1) // extras
-    };
-#ifdef CONFIG_WIN32DLL
-    wra_init_t winit_data={
-	sh->wf->nSamplesPerSec,
-	sh->wf->wBitsPerSample,
-	sh->wf->nChannels,
-	100, // quality
-	sh->wf->nBlockAlign, // subpacket size
-	sh->wf->nBlockAlign, // coded frame size
-	sh->wf->cbSize, // codec data length
-	(char*)(sh->wf+1) // extras
-    };
-#endif
-#ifdef CONFIG_WIN32DLL
-    if (dll_type == 1)
-	result=wraInitDecoder(sh->context,&winit_data);
-    else
-#endif
-    result=raInitDecoder(sh->context,&init_data);
-
-    if(result){
-      mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder init failed, error code: 0x%X\n",result);
-      return 0;
-    }
-//    printf("initdecoder ok (result: %x)\n", result);
-  }
-
-#ifdef CONFIG_WIN32DLL
-    if((raSetPwd && dll_type == 0) || (wraSetPwd && dll_type == 1)){
-#else
-    if(raSetPwd){
-#endif
-	// used by 'SIPR'
-#ifdef CONFIG_WIN32DLL
-	if (dll_type == 1)
-	    wraSetPwd(sh->context,"Ardubancel Quazanga");
-	else
-#endif
-	raSetPwd(sh->context,"Ardubancel Quazanga"); // set password... lol.
-    }
-
-  if (sh->format == mmioFOURCC('s','i','p','r')) {
-    short flavor;
-
-    if (sh->wf->nAvgBytesPerSec > 1531)
-        flavor = 3;
-    else if (sh->wf->nAvgBytesPerSec > 937)
-        flavor = 1;
-    else if (sh->wf->nAvgBytesPerSec > 719)
-        flavor = 0;
-    else
-        flavor = 2;
-    mp_msg(MSGT_DECAUDIO,MSGL_V,"Got sipr flavor %d from bitrate %d\n",flavor, sh->wf->nAvgBytesPerSec);
-
-#ifdef CONFIG_WIN32DLL
-    if (dll_type == 1)
-	result=wraSetFlavor(sh->context,flavor);
-    else
-#endif
-    result=raSetFlavor(sh->context,flavor);
-    if(result){
-      mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder flavor setup failed, error code: 0x%X\n",result);
-      return 0;
-    }
-  } // sipr flavor
-
-    sh->i_bps=sh->wf->nAvgBytesPerSec;
-
-  sh->audio_out_minsize=128000; // no idea how to get... :(
-  sh->audio_in_minsize = sh->wf->nBlockAlign;
-
-  return 1; // return values: 1=OK 0=ERROR
-}
-
-static int init(sh_audio_t *sh_audio){
-  // initialize the decoder, set tables etc...
-
-  // you can store HANDLE or private struct pointer at sh->context
-  // you can access WAVEFORMATEX header at sh->wf
-
-  // set sample format/rate parameters if you didn't do it in preinit() yet.
-
-  return 1; // return values: 1=OK 0=ERROR
-}
-
-static void uninit(sh_audio_t *sh){
-  // uninit the decoder etc...
-  // again: you don't have to free() a_in_buffer here! it's done by the core.
-#ifdef CONFIG_WIN32DLL
-    if (dll_type == 1)
-    {
-	if (wraFreeDecoder) wraFreeDecoder(sh->context);
-	if (wraCloseCodec) wraCloseCodec(sh->context);
-    }
-#endif
-
-    if (raFreeDecoder) raFreeDecoder(sh->context);
-    if (raCloseCodec) raCloseCodec(sh->context);
-
-
-#ifdef CONFIG_WIN32DLL
-    if (dll_type == 1)
-    {
-	if (rv_handle) FreeLibrary(rv_handle);
-    } else
-#endif
-// this dlclose() causes some memory corruption, and crashes soon (in caller):
-//    if (rv_handle) dlclose(rv_handle);
-    rv_handle = NULL;
-}
-
-static int decode_audio(sh_audio_t *sh,unsigned char *buf,int minlen,int maxlen){
-  int result av_unused;
-  int len=-1;
-
-  if(sh->a_in_buffer_len<=0){
-      // fill the buffer!
-      if (sh->ds->eof)
-          return 0;
-      demux_read_data(sh->ds, sh->a_in_buffer, sh->wf->nBlockAlign);
-      sh->a_in_buffer_size=
-      sh->a_in_buffer_len=sh->wf->nBlockAlign;
-  }
-
-#ifdef CONFIG_WIN32DLL
-    if (dll_type == 1)
-      result=wraDecode(sh->context, sh->a_in_buffer+sh->a_in_buffer_size-sh->a_in_buffer_len, sh->wf->nBlockAlign,
-       buf, &len, -1);
-    else
-#endif
-  result=raDecode(sh->context, sh->a_in_buffer+sh->a_in_buffer_size-sh->a_in_buffer_len, sh->wf->nBlockAlign,
-       buf, &len, -1);
-  sh->a_in_buffer_len-=sh->wf->nBlockAlign;
-
-//  printf("radecode: %d bytes, res=0x%X  \n",len,result);
-
-  return len; // return value: number of _bytes_ written to output buffer,
-              // or -1 for EOF (or uncorrectable error)
-}
-
-static int control(sh_audio_t *sh,int cmd,void* arg, ...){
-    // various optional functions you MAY implement:
-    switch(cmd){
-      case ADCTRL_RESYNC_STREAM:
-        // it is called once after seeking, to resync.
-	// Note: sh_audio->a_in_buffer_len=0; is done _before_ this call!
-	return CONTROL_TRUE;
-      case ADCTRL_SKIP_FRAME:
-        // it is called to skip (jump over) small amount (1/10 sec or 1 frame)
-	// of audio data - used to sync audio to video after seeking
-	// if you don't return CONTROL_TRUE, it will defaults to:
-	//      ds_fill_buffer(sh_audio->ds);  // skip 1 demux packet
-	return CONTROL_TRUE;
-    }
-  return CONTROL_UNKNOWN;
-}