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, 318 deletions

diff --git a/loader/dshow/DS_Filter.c b/loader/dshow/DS_Filter.c
deleted file mode 100644
index 88f881523a..0000000000
--- a/loader/dshow/DS_Filter.c
+++ /dev/null
@@ -1,318 +0,0 @@
-/*
- * Modified for use with MPlayer, detailed changelog at
- * http://svn.mplayerhq.hu/mplayer/trunk/
- */
-
-#include "config.h"
-#include "DS_Filter.h"
-#include "graph.h"
-#include "loader/drv.h"
-#include "loader/com.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include "loader/win32.h" // printf macro
-
-typedef long STDCALL (*GETCLASS) (const GUID*, const GUID*, void**);
-
-#ifndef WIN32_LOADER
-const GUID IID_IUnknown =
-{
-    0x00000000, 0x0000, 0x0000,
-    {0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}
-};
-const GUID IID_IClassFactory =
-{
-    0x00000001, 0x0000, 0x0000,
-    {0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}
-};
-
-HRESULT STDCALL CoInitialize(LPVOID pvReserved);
-void STDCALL CoUninitialize(void);
-#endif
-
-static void DS_Filter_Start(DS_Filter* This)
-{
-    HRESULT hr;
-
-    //Debug printf("DS_Filter_Start(%p)\n", This);
-    hr = This->m_pFilter->vt->Run(This->m_pFilter, (REFERENCE_TIME)0);
-    if (hr != 0)
-    {
-	Debug printf("WARNING: m_Filter->Run() failed, error code %x\n", (int)hr);
-    }
-}
-
-static void DS_Filter_Stop(DS_Filter* This)
-{
-    if (This->m_pAll)
-    {
-	//Debug	printf("DS_Filter_Stop(%p)\n", This);
-	This->m_pFilter->vt->Stop(This->m_pFilter); // causes weird crash ??? FIXME
-	This->m_pAll->vt->Release((IUnknown*)This->m_pAll);
-	This->m_pAll = 0;
-    }
-}
-
-void DS_Filter_Destroy(DS_Filter* This)
-{
-    This->Stop(This);
-
-    if (This->m_pOurInput)
-	This->m_pOurInput->vt->Release((IUnknown*)This->m_pOurInput);
-    if (This->m_pInputPin)
-	This->m_pInputPin->vt->Disconnect(This->m_pInputPin);
-    if (This->m_pOutputPin)
-	This->m_pOutputPin->vt->Disconnect(This->m_pOutputPin);
-    if (This->m_pFilter)
-	This->m_pFilter->vt->Release((IUnknown*)This->m_pFilter);
-    if (This->m_pOutputPin)
-	This->m_pOutputPin->vt->Release((IUnknown*)This->m_pOutputPin);
-    if (This->m_pInputPin)
-	This->m_pInputPin->vt->Release((IUnknown*)This->m_pInputPin);
-    if (This->m_pImp)
-	This->m_pImp->vt->Release((IUnknown*)This->m_pImp);
-
-    if (This->m_pOurOutput)
-	This->m_pOurOutput->vt->Release((IUnknown*)This->m_pOurOutput);
-    if (This->m_pParentFilter)
-	This->m_pParentFilter->vt->Release((IUnknown*)This->m_pParentFilter);
-    if (This->m_pSrcFilter)
-	This->m_pSrcFilter->vt->Release((IUnknown*)This->m_pSrcFilter);
-
-    // FIXME - we are still leaving few things allocated!
-    if (This->m_iHandle)
-	FreeLibrary((unsigned)This->m_iHandle);
-
-    free(This);
-
-#ifdef WIN32_LOADER
-    CodecRelease();
-#else
-    CoUninitialize();
-#endif
-}
-
-static HRESULT STDCALL DS_Filter_CopySample(void* pUserData,IMediaSample* pSample){
-    BYTE* pointer;
-    int len;
-    SampleProcUserData* pData=pUserData;
-    Debug printf("CopySample called(%p,%p)\n",pSample,pUserData);
-    if (pSample->vt->GetPointer(pSample, &pointer))
-	return 1;
-    len = pSample->vt->GetActualDataLength(pSample);
-    if (len == 0)
-	len = pSample->vt->GetSize(pSample);//for iv50
-
-    pData->frame_pointer = pointer;
-    pData->frame_size = len;
-/*
-    FILE* file=fopen("./uncompr.bmp", "wb");
-    char head[14]={0x42, 0x4D, 0x36, 0x10, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00};
-    *(int*)(&head[2])=len+0x36;
-    fwrite(head, 14, 1, file);
-    fwrite(&((VIDEOINFOHEADER*)me.type.pbFormat)->bmiHeader, sizeof(BITMAPINFOHEADER), 1, file);
-    fwrite(pointer, len, 1, file);
-    fclose(file);
-*/
-    return 0;
-}
-
-DS_Filter* DS_FilterCreate(const char* dllname, const GUID* id,
-			   AM_MEDIA_TYPE* in_fmt,
-			   AM_MEDIA_TYPE* out_fmt,SampleProcUserData* pUserData)
-{
-    int init = 0;
-//    char eb[250];
-    const char* em = NULL;
-    MemAllocator* tempAll;
-    FilterGraph* graph;
-    ALLOCATOR_PROPERTIES props,props1;
-    DS_Filter* This = malloc(sizeof(DS_Filter));
-    if (!This)
-	return NULL;
-
-#ifdef WIN32_LOADER
-    CodecAlloc();
-#else
-    CoInitialize(0L);
-#endif
-
-    /*
-        tempAll is not used  anywhere.
-	MemAllocatorCreate() is called to ensure that RegisterComObject for IMemoryAllocator
-	will be	called before possible call
-	to CoCreateInstance(...,&IID_IMemoryAllocator,...) from binary codec.
-    */
-    tempAll=MemAllocatorCreate();
-    This->m_pFilter = NULL;
-    This->m_pInputPin = NULL;
-    This->m_pOutputPin = NULL;
-    This->m_pSrcFilter = NULL;
-    This->m_pParentFilter = NULL;
-    This->m_pOurInput = NULL;
-    This->m_pOurOutput = NULL;
-    This->m_pAll = NULL;
-    This->m_pImp = NULL;
-
-    This->Start = DS_Filter_Start;
-    This->Stop = DS_Filter_Stop;
-
-    for (;;)
-    {
-	GETCLASS func;
-	struct IClassFactory* factory = NULL;
-	struct IUnknown* object = NULL;
-	IEnumPins* enum_pins = 0;
-	IPin* array[256];
-	ULONG fetched;
-        HRESULT result;
-        unsigned int i;
-        static const uint16_t filter_name[] = { 'F', 'i', 'l', 't', 'e', 'r', 0 };
-
-	This->m_iHandle = LoadLibraryA(dllname);
-	if (!This->m_iHandle)
-	{
-	    em = "could not open DirectShow DLL";
-	    break;
-	}
-	func = (GETCLASS)GetProcAddress((unsigned)This->m_iHandle, "DllGetClassObject");
-	if (!func)
-	{
-	    em = "illegal or corrupt DirectShow DLL";
-	    break;
-	}
-	result = func(id, &IID_IClassFactory, (void*)&factory);
-	if (result || !factory)
-	{
-	    em = "no such class object";
-	    break;
-	}
-	result = factory->vt->CreateInstance(factory, 0, &IID_IUnknown, (void*)&object);
-	factory->vt->Release((IUnknown*)factory);
-	if (result || !object)
-	{
-	    em = "class factory failure";
-	    break;
-	}
-	result = object->vt->QueryInterface(object, &IID_IBaseFilter, (void*)&This->m_pFilter);
-	object->vt->Release((IUnknown*)object);
-	if (result || !This->m_pFilter)
-	{
-	    em = "object does not provide IBaseFilter interface";
-            break;
-	}
-
-	graph = FilterGraphCreate();
-	result = This->m_pFilter->vt->JoinFilterGraph(This->m_pFilter, (IFilterGraph*)graph, filter_name);
-
-	// enumerate pins
-	result = This->m_pFilter->vt->EnumPins(This->m_pFilter, &enum_pins);
-	if (result || !enum_pins)
-	{
-	    em = "could not enumerate pins";
-            break;
-	}
-
-	enum_pins->vt->Reset(enum_pins);
-	result = enum_pins->vt->Next(enum_pins, (ULONG)256, (IPin**)array, &fetched);
-	enum_pins->vt->Release((IUnknown*)enum_pins);
-	Debug printf("Pins enumeration returned %ld pins, error is %x\n", fetched, (int)result);
-
-	for (i = 0; i < fetched; i++)
-	{
-	    PIN_DIRECTION direction = -1;
-	    array[i]->vt->QueryDirection(array[i], &direction);
-	    if (!This->m_pInputPin && direction == PINDIR_INPUT)
-	    {
-		This->m_pInputPin = array[i];
-		This->m_pInputPin->vt->AddRef((IUnknown*)This->m_pInputPin);
-	    }
-	    if (!This->m_pOutputPin && direction == PINDIR_OUTPUT)
-	    {
-		This->m_pOutputPin = array[i];
-		This->m_pOutputPin->vt->AddRef((IUnknown*)This->m_pOutputPin);
-	    }
-	    array[i]->vt->Release((IUnknown*)(array[i]));
-	}
-	if (!This->m_pInputPin)
-	{
-	    em = "could not find input pin";
-            break;
-	}
-	if (!This->m_pOutputPin)
-	{
-	    em = "could not find output pin";
-            break;
-	}
-	result = This->m_pInputPin->vt->QueryInterface((IUnknown*)This->m_pInputPin,
-						       &IID_IMemInputPin,
-						       (void*)&This->m_pImp);
-	if (result)
-	{
-	    em = "could not get IMemInputPin interface";
-	    break;
-	}
-
-	This->m_pOurType = in_fmt;
-	This->m_pDestType = out_fmt;
-        result = This->m_pInputPin->vt->QueryAccept(This->m_pInputPin, This->m_pOurType);
-	if (result)
-	{
-	    em = "source format is not accepted";
-            break;
-	}
-	This->m_pParentFilter = CBaseFilter2Create();
-	This->m_pSrcFilter = CBaseFilterCreate(This->m_pOurType, This->m_pParentFilter);
-	This->m_pOurInput = This->m_pSrcFilter->GetPin(This->m_pSrcFilter);
-	This->m_pOurInput->vt->AddRef((IUnknown*)This->m_pOurInput);
-
-	result = This->m_pInputPin->vt->ReceiveConnection(This->m_pInputPin,
-							  This->m_pOurInput,
-							  This->m_pOurType);
-	if (result)
-	{
-	    em = "could not connect to input pin";
-            break;
-	}
-	result = This->m_pImp->vt->GetAllocator(This->m_pImp, &This->m_pAll);
-	if (result || !This->m_pAll)
-	{
-	    em="error getting IMemAllocator interface";
-            break;
-	}
-
-        //Seting allocator property according to our media type
-	props.cBuffers=1;
-	props.cbBuffer=This->m_pOurType->lSampleSize;
-	props.cbAlign=1;
-	props.cbPrefix=0;
-	This->m_pAll->vt->SetProperties(This->m_pAll, &props, &props1);
-
-	//Notify remote pin about choosed allocator
-	This->m_pImp->vt->NotifyAllocator(This->m_pImp, This->m_pAll, 0);
-
-	This->m_pOurOutput = COutputPinCreate(This->m_pDestType,DS_Filter_CopySample,pUserData);
-
-	result = This->m_pOutputPin->vt->ReceiveConnection(This->m_pOutputPin,
-							   (IPin*) This->m_pOurOutput,
-							   This->m_pDestType);
-	if (result)
-	{
-	    em = "could not connect to output pin";
-            break;
-	}
-
-	init++;
-        break;
-    }
-    tempAll->vt->Release((IUnknown*)tempAll);
-
-    if (!init)
-    {
-	DS_Filter_Destroy(This);
-	printf("Warning: DS_Filter() %s.  (DLL=%.200s)\n", em, dllname);
-        This = 0;
-    }
-    return This;
-}