loader/dmo/dmo.c

   1 /*
   2  * Modified for use with MPlayer, detailed changelog at
   3  * http://svn.mplayerhq.hu/mplayer/trunk/
   4  */
   5
   6 #include "config.h"
   7 #include "DMO_Filter.h"
   8 #include "drv.h"
   9 #include "com.h"
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include "win32.h" // printf macro
  14
  15 void trapbug();
  16 typedef long STDCALL (*GETCLASS) (const GUID*, const GUID*, void**);
  17
  18 void DMO_Filter_Destroy(DMO_Filter* This)
  19 {
  20     if (This->m_pOptim)
  21         This->m_pOptim->vt->Release((IUnknown*)This->m_pOptim);
  22     if (This->m_pInPlace)
  23         This->m_pInPlace->vt->Release((IUnknown*)This->m_pInPlace);
  24     if (This->m_pMedia)
  25         This->m_pMedia->vt->Release((IUnknown*)This->m_pMedia);
  26
  27     free(This);
  28 #ifdef WIN32_LOADER
  29     CodecRelease();
  30 #endif
  31 }
  32
  33 DMO_Filter* DMO_FilterCreate(const char* dllname, const GUID* id,
  34                              DMO_MEDIA_TYPE* in_fmt,
  35                              DMO_MEDIA_TYPE* out_fmt)
  36 {
  37     HRESULT hr = 0;
  38     const char* em = NULL;
  39     DMO_Filter* This = (DMO_Filter*) malloc(sizeof(DMO_Filter));
  40     if (!This)
  41         return NULL;
  42
  43     memset(This, 0, sizeof(DMO_Filter));
  44 #ifdef WIN32_LOADER
  45     CodecAlloc();
  46 #endif
  47
  48     //This->Start = DS_Filter_Start;
  49     //This->Stop = DS_Filter_Stop;
  50
  51     for (;;)
  52     {
  53         GETCLASS func;
  54         struct IClassFactory* factory = NULL;
  55         struct IUnknown* object = NULL;
  56         unsigned int i;
  57         unsigned long inputs, outputs;
  58
  59         This->m_iHandle = LoadLibraryA(dllname);
  60         if (!This->m_iHandle)
  61         {
  62             em = "could not open DMO DLL";
  63             break;
  64         }
  65         func = (GETCLASS)GetProcAddress((unsigned)This->m_iHandle, "DllGetClassObject");
  66         if (!func)
  67         {
  68             em = "illegal or corrupt DMO DLL";
  69             break;
  70         }
  71 //trapbug();
  72         hr = func(id, &IID_IClassFactory, (void*)&factory);
  73         if (hr || !factory)
  74         {
  75             em = "no such class object";
  76             break;
  77         }
  78         hr = factory->vt->CreateInstance(factory, 0, &IID_IUnknown, (void*)&object);
  79         factory->vt->Release((IUnknown*)factory);
  80         if (hr || !object)
  81         {
  82             em = "class factory failure";
  83             break;
  84         }
  85         hr = object->vt->QueryInterface(object, &IID_IMediaObject, (void*)&This->m_pMedia);
  86         if (hr == 0)
  87         {
  88             /* query for some extra available interface */
  89             HRESULT r = object->vt->QueryInterface(object, &IID_IMediaObjectInPlace, (void*)&This->m_pInPlace);
  90             if (r == 0 && This->m_pInPlace)
  91                 printf("DMO dll supports InPlace - PLEASE REPORT to developer\n");
  92             r = object->vt->QueryInterface(object, &IID_IDMOVideoOutputOptimizations, (void*)&This->m_pOptim);
  93             if (r == 0 && This->m_pOptim)
  94             {
  95                 unsigned long flags;
  96                 r = This->m_pOptim->vt->QueryOperationModePreferences(This->m_pOptim, 0, &flags);
  97                 printf("DMO dll supports VO Optimizations %ld %lx\n", r, flags);
  98                 if (flags & DMO_VOSF_NEEDS_PREVIOUS_SAMPLE)
  99                     printf("DMO dll might use previous sample when requested\n");
 100             }
 101         }
 102         object->vt->Release((IUnknown*)object);
 103         if (hr || !This->m_pMedia)
 104         {
 105             em = "object does not provide IMediaObject interface";
 106             break;
 107         }
 108         hr = This->m_pMedia->vt->SetInputType(This->m_pMedia, 0, in_fmt, 0);
 109         if (hr)
 110         {
 111             em = "input format not accepted";
 112             break;
 113         }
 114
 115         if (0) {
 116             DMO_MEDIA_TYPE dmo;
 117             //VIDEOINFOHEADER* vi;
 118             memset(&dmo, 0, sizeof(dmo));
 119             i = This->m_pMedia->vt->GetOutputType(This->m_pMedia, 0, 2, &dmo);
 120             Debug printf("GetOutputType %x \n", i);
 121             Debug printf("DMO  0x%x (%.4s) 0x%x (%.4s)\n"
 122             //Debug printf("DMO  0x%x 0x%x\n"
 123                    ":: fixszsamp:%d tempcomp:%d  sampsz:%ld\n"
 124                    ":: formtype: 0x%x\n"
 125                    ":: unk %p  cbform: %ld  pbform:%p\n",
 126                    dmo.majortype.f1,
 127                    (const char*)&dmo.majortype.f1,
 128                    dmo.subtype.f1,
 129                    (const char*)&dmo.subtype.f1,
 130                    dmo.bFixedSizeSamples, dmo.bTemporalCompression,
 131                    dmo.lSampleSize,
 132                    dmo.formattype.f1,
 133                    dmo.pUnk, dmo.cbFormat, dmo.pbFormat
 134                   );
 135 /*          vi =  (VIDEOINFOHEADER*) dmo.pbFormat;
 136             vi =  (VIDEOINFOHEADER*) out_fmt->pbFormat;
 137             for (i = 0; i < out_fmt->cbFormat; i++)
 138                 Debug printf("BYTE %d  %02x  %02x\n", i, ((uint8_t*)dmo.pbFormat)[i], ((uint8_t*)out_fmt->pbFormat)[i]);
 139 */
 140         }
 141
 142         hr = This->m_pMedia->vt->SetOutputType(This->m_pMedia, 0, out_fmt, 0);
 143         if (hr)
 144         {
 145             em = "output format no accepted";
 146             break;
 147         }
 148
 149         inputs = outputs = 0;
 150         hr = This->m_pMedia->vt->GetOutputSizeInfo(This->m_pMedia, 0, &inputs, &outputs);
 151         Debug printf("GetOutput r=0x%lx   size:%ld  align:%ld\n", hr, inputs, outputs);
 152
 153         // This->m_pMedia->vt->AllocateStreamingResources(This->m_pMedia);
 154         hr = This->m_pMedia->vt->GetStreamCount(This->m_pMedia, &inputs, &outputs);
 155         Debug printf("StreamCount r=0x%lx  %ld  %ld\n", hr, inputs, outputs);
 156
 157         break;
 158     }
 159     if (em)
 160     {
 161         DMO_Filter_Destroy(This);
 162         printf("IMediaObject ERROR: %p  %s (0x%lx : %ld)\n", em, em ? em : "", hr, hr);
 163         This = 0;
 164     }
 165     return This;
 166 }