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