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