| Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | //------------------------------------------------------------------------------
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| 2 | // File: FourCC.h
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| 3 | //
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| 4 | // Desc: DirectShow base classes.
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| 5 | //
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| 6 | // Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
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| 7 | //------------------------------------------------------------------------------
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| 8 |
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| 9 |
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| 10 | // FOURCCMap
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| 11 | //
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| 12 | // provides a mapping between old-style multimedia format DWORDs
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| 13 | // and new-style GUIDs.
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| 14 | //
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| 15 | // A range of 4 billion GUIDs has been allocated to ensure that this
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| 16 | // mapping can be done straightforwardly one-to-one in both directions.
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| 17 | //
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| 18 | // January 95
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| 19 |
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| 20 |
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| 21 | #ifndef __FOURCC__
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| 22 | #define __FOURCC__
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| 23 |
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| 24 |
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| 25 | // Multimedia format types are marked with DWORDs built from four 8-bit
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| 26 | // chars and known as FOURCCs. New multimedia AM_MEDIA_TYPE definitions include
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| 27 | // a subtype GUID. In order to simplify the mapping, GUIDs in the range:
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| 28 | // XXXXXXXX-0000-0010-8000-00AA00389B71
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| 29 | // are reserved for FOURCCs.
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| 30 |
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| 31 | class FOURCCMap : public GUID
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| 32 | {
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| 33 |
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| 34 | public:
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| 35 | FOURCCMap();
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| 36 | FOURCCMap(DWORD Fourcc);
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| 37 | FOURCCMap(const GUID *);
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| 38 |
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| 39 |
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| 40 | DWORD GetFOURCC(void);
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| 41 | void SetFOURCC(DWORD fourcc);
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| 42 | void SetFOURCC(const GUID *);
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| 43 |
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| 44 | private:
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| 45 | void InitGUID();
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| 46 | };
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| 47 |
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| 48 | #define GUID_Data2 0
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| 49 | #define GUID_Data3 0x10
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| 50 | #define GUID_Data4_1 0xaa000080
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| 51 | #define GUID_Data4_2 0x719b3800
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| 52 |
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| 53 | inline void
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| 54 | FOURCCMap::InitGUID() {
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| 55 | Data2 = GUID_Data2;
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| 56 | Data3 = GUID_Data3;
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| 57 | ((DWORD *)Data4)[0] = GUID_Data4_1;
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| 58 | ((DWORD *)Data4)[1] = GUID_Data4_2;
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| 59 | }
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| 60 |
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| 61 | inline
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| 62 | FOURCCMap::FOURCCMap() {
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| 63 | InitGUID();
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| 64 | SetFOURCC( DWORD(0));
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| 65 | }
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| 66 |
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| 67 | inline
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| 68 | FOURCCMap::FOURCCMap(DWORD fourcc)
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| 69 | {
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| 70 | InitGUID();
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| 71 | SetFOURCC(fourcc);
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| 72 | }
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| 73 |
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| 74 | inline
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| 75 | FOURCCMap::FOURCCMap(const GUID * pGuid)
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| 76 | {
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| 77 | InitGUID();
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| 78 | SetFOURCC(pGuid);
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| 79 | }
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| 80 |
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| 81 | inline void
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| 82 | FOURCCMap::SetFOURCC(const GUID * pGuid)
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| 83 | {
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| 84 | FOURCCMap * p = (FOURCCMap*) pGuid;
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| 85 | SetFOURCC(p->GetFOURCC());
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| 86 | }
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| 87 |
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| 88 | inline void
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| 89 | FOURCCMap::SetFOURCC(DWORD fourcc)
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| 90 | {
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| 91 | Data1 = fourcc;
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| 92 | }
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| 93 |
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| 94 | inline DWORD
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| 95 | FOURCCMap::GetFOURCC(void)
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| 96 | {
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| 97 | return Data1;
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| 98 | }
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| 99 |
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| 100 | #endif /* __FOURCC__ */
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| 101 |
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