2 * Implementation of IEnumMediaTypes Interface
4 * Copyright 2003 Robert Shearman
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "quartz_private.h"
23 #include "wine/debug.h"
25 WINE_DEFAULT_DEBUG_CHANNEL(quartz
);
27 HRESULT
CopyMediaType(AM_MEDIA_TYPE
* pDest
, const AM_MEDIA_TYPE
*pSrc
)
29 memcpy(pDest
, pSrc
, sizeof(AM_MEDIA_TYPE
));
30 if (!(pDest
->pbFormat
= CoTaskMemAlloc(pSrc
->cbFormat
)))
32 memcpy(pDest
->pbFormat
, pSrc
->pbFormat
, pSrc
->cbFormat
);
36 void DeleteMediaType(AM_MEDIA_TYPE
* pMediaType
)
38 if (pMediaType
->pbFormat
)
40 CoTaskMemFree(pMediaType
->pbFormat
);
41 pMediaType
->pbFormat
= NULL
;
45 IUnknown_Release(pMediaType
->pUnk
);
46 pMediaType
->pUnk
= NULL
;
50 BOOL
CompareMediaTypes(const AM_MEDIA_TYPE
* pmt1
, const AM_MEDIA_TYPE
* pmt2
, BOOL bWildcards
)
53 dump_AM_MEDIA_TYPE(pmt1
);
55 dump_AM_MEDIA_TYPE(pmt2
);
56 return (((bWildcards
&& (IsEqualGUID(&pmt1
->majortype
, &GUID_NULL
) || IsEqualGUID(&pmt2
->majortype
, &GUID_NULL
))) || IsEqualGUID(&pmt1
->majortype
, &pmt2
->majortype
)) &&
57 ((bWildcards
&& (IsEqualGUID(&pmt1
->subtype
, &GUID_NULL
) || IsEqualGUID(&pmt2
->subtype
, &GUID_NULL
))) || IsEqualGUID(&pmt1
->subtype
, &pmt2
->subtype
)));
60 void dump_AM_MEDIA_TYPE(const AM_MEDIA_TYPE
* pmt
)
64 TRACE("\t%s\n\t%s\n\t...\n\t%s\n", qzdebugstr_guid(&pmt
->majortype
), qzdebugstr_guid(&pmt
->subtype
), qzdebugstr_guid(&pmt
->formattype
));
67 typedef struct IEnumMediaTypesImpl
69 const IEnumMediaTypesVtbl
* lpVtbl
;
71 ENUMMEDIADETAILS enumMediaDetails
;
73 } IEnumMediaTypesImpl
;
75 static const struct IEnumMediaTypesVtbl IEnumMediaTypesImpl_Vtbl
;
77 HRESULT
IEnumMediaTypesImpl_Construct(const ENUMMEDIADETAILS
* pDetails
, IEnumMediaTypes
** ppEnum
)
80 IEnumMediaTypesImpl
* pEnumMediaTypes
= CoTaskMemAlloc(sizeof(IEnumMediaTypesImpl
));
87 pEnumMediaTypes
->lpVtbl
= &IEnumMediaTypesImpl_Vtbl
;
88 pEnumMediaTypes
->refCount
= 1;
89 pEnumMediaTypes
->uIndex
= 0;
90 pEnumMediaTypes
->enumMediaDetails
.cMediaTypes
= pDetails
->cMediaTypes
;
91 pEnumMediaTypes
->enumMediaDetails
.pMediaTypes
= CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE
) * pDetails
->cMediaTypes
);
92 for (i
= 0; i
< pDetails
->cMediaTypes
; i
++)
93 pEnumMediaTypes
->enumMediaDetails
.pMediaTypes
[i
] = pDetails
->pMediaTypes
[i
];
94 *ppEnum
= (IEnumMediaTypes
*)(&pEnumMediaTypes
->lpVtbl
);
98 static HRESULT WINAPI
IEnumMediaTypesImpl_QueryInterface(IEnumMediaTypes
* iface
, REFIID riid
, LPVOID
* ppv
)
100 TRACE("(%s, %p)\n", qzdebugstr_guid(riid
), ppv
);
104 if (IsEqualIID(riid
, &IID_IUnknown
))
105 *ppv
= (LPVOID
)iface
;
106 else if (IsEqualIID(riid
, &IID_IEnumMediaTypes
))
107 *ppv
= (LPVOID
)iface
;
111 IUnknown_AddRef((IUnknown
*)(*ppv
));
115 FIXME("No interface for %s!\n", qzdebugstr_guid(riid
));
117 return E_NOINTERFACE
;
120 static ULONG WINAPI
IEnumMediaTypesImpl_AddRef(IEnumMediaTypes
* iface
)
122 ICOM_THIS(IEnumMediaTypesImpl
, iface
);
124 return ++This
->refCount
;
127 static ULONG WINAPI
IEnumMediaTypesImpl_Release(IEnumMediaTypes
* iface
)
129 ICOM_THIS(IEnumMediaTypesImpl
, iface
);
131 if (!--This
->refCount
)
133 CoTaskMemFree(This
->enumMediaDetails
.pMediaTypes
);
138 return This
->refCount
;
141 static HRESULT WINAPI
IEnumMediaTypesImpl_Next(IEnumMediaTypes
* iface
, ULONG cMediaTypes
, AM_MEDIA_TYPE
** ppMediaTypes
, ULONG
* pcFetched
)
144 ICOM_THIS(IEnumMediaTypesImpl
, iface
);
146 cFetched
= min(This
->enumMediaDetails
.cMediaTypes
, This
->uIndex
+ cMediaTypes
) - This
->uIndex
;
148 TRACE("(%lu, %p, %p)\n", cMediaTypes
, ppMediaTypes
, pcFetched
);
149 TRACE("Next uIndex: %lu, cFetched: %lu\n", This
->uIndex
, cFetched
);
154 *ppMediaTypes
= CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE
) * cFetched
);
155 for (i
= 0; i
< cFetched
; i
++)
156 (*ppMediaTypes
)[i
] = This
->enumMediaDetails
.pMediaTypes
[This
->uIndex
+ i
];
159 if ((cMediaTypes
!= 1) || pcFetched
)
160 *pcFetched
= cFetched
;
162 This
->uIndex
+= cFetched
;
164 if (cFetched
!= cMediaTypes
)
169 static HRESULT WINAPI
IEnumMediaTypesImpl_Skip(IEnumMediaTypes
* iface
, ULONG cMediaTypes
)
171 ICOM_THIS(IEnumMediaTypesImpl
, iface
);
173 TRACE("(%lu)\n", cMediaTypes
);
175 if (This
->uIndex
+ cMediaTypes
< This
->enumMediaDetails
.cMediaTypes
)
177 This
->uIndex
+= cMediaTypes
;
183 static HRESULT WINAPI
IEnumMediaTypesImpl_Reset(IEnumMediaTypes
* iface
)
185 ICOM_THIS(IEnumMediaTypesImpl
, iface
);
193 static HRESULT WINAPI
IEnumMediaTypesImpl_Clone(IEnumMediaTypes
* iface
, IEnumMediaTypes
** ppEnum
)
196 ICOM_THIS(IEnumMediaTypesImpl
, iface
);
198 TRACE("(%p)\n", ppEnum
);
200 hr
= IEnumMediaTypesImpl_Construct(&This
->enumMediaDetails
, ppEnum
);
203 return IEnumMediaTypes_Skip(*ppEnum
, This
->uIndex
);
206 static const IEnumMediaTypesVtbl IEnumMediaTypesImpl_Vtbl
=
208 ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
209 IEnumMediaTypesImpl_QueryInterface
,
210 IEnumMediaTypesImpl_AddRef
,
211 IEnumMediaTypesImpl_Release
,
212 IEnumMediaTypesImpl_Next
,
213 IEnumMediaTypesImpl_Skip
,
214 IEnumMediaTypesImpl_Reset
,
215 IEnumMediaTypesImpl_Clone