|  | /* | 
|  | * Common FOURCC | 
|  | * | 
|  | * Copyright 2003 Robert Shearman | 
|  | * | 
|  | * This library is free software; you can redistribute it and/or | 
|  | * modify it under the terms of the GNU Lesser General Public | 
|  | * License as published by the Free Software Foundation; either | 
|  | * version 2.1 of the License, or (at your option) any later version. | 
|  | * | 
|  | * This library is distributed in the hope that it will be useful, | 
|  | * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
|  | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
|  | * Lesser General Public License for more details. | 
|  | * | 
|  | * You should have received a copy of the GNU Lesser General Public | 
|  | * License along with this library; if not, write to the Free Software | 
|  | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA | 
|  | */ | 
|  |  | 
|  | #define FromHex(n)  (((n) >= 'A') ? ((n) + 10 - 'A') : ((n) - '0')) | 
|  | #define StreamFromFOURCC(fcc) ((WORD) ((FromHex(LOBYTE(LOWORD(fcc))) << 4) + (FromHex(HIBYTE(LOWORD(fcc)))))) | 
|  | #define TWOCCFromFOURCC(fcc)    HIWORD(fcc) | 
|  |  | 
|  | #ifndef aviTWOCC | 
|  | #define aviTWOCC(ch0, ch1) ((WORD)(BYTE)(ch0) | ((WORD)(BYTE)(ch1) << 8)) | 
|  | #endif | 
|  |  | 
|  | /* FIXME: endianess? */ | 
|  | #define aviFCC(ch0, ch1, ch2, ch3) ((DWORD)(BYTE)(ch3) << 24 | (DWORD)(BYTE)(ch2) << 16 | (DWORD)(BYTE)(ch1) << 8 | ((DWORD)(BYTE)(ch0))) | 
|  |  | 
|  | /* four character codes used in AVI files */ | 
|  | #define ckidAVI               aviFCC('A','V','I',' ') | 
|  | #define ckidRIFF              aviFCC('R','I','F','F') | 
|  | #define ckidLIST              aviFCC('L','I','S','T') | 
|  | #define ckidJUNK              aviFCC('J','U','N','K') | 
|  | #define ckidHEADERLIST        aviFCC('h','d','r','l') | 
|  | #define ckidAVIMOVIE          aviFCC('m','o','v','i') | 
|  | #define ckidSTREAMNAME        aviFCC('s','t','r','n') | 
|  | #define ckidSTREAMHANDLERDATA aviFCC('s','t','r','d') | 
|  | #ifndef ckidMAINAVIHEADER | 
|  | # define ckidMAINAVIHEADER    aviFCC('a','v','i','h') | 
|  | # define ckidODML             aviFCC('o','d','m','l') | 
|  | # define ckidAVIEXTHEADER     aviFCC('d','m','l','h') | 
|  | # define ckidSTREAMLIST       aviFCC('s','t','r','l') | 
|  | # define ckidSTREAMHEADER     aviFCC('s','t','r','h') | 
|  | # define ckidSTREAMFORMAT     aviFCC('s','t','r','f') | 
|  | # define ckidAVIOLDINDEX      aviFCC('i','d','x','1') | 
|  | # define ckidAVISUPERINDEX    aviFCC('i','n','d','x') | 
|  | #endif | 
|  | #ifndef streamtypeVIDEO | 
|  | #define streamtypeVIDEO       aviFCC('v','i','d','s') | 
|  | #define streamtypeAUDIO       aviFCC('a','u','d','s') | 
|  | #define streamtypeMIDI        aviFCC('m','i','d','s') | 
|  | #define streamtypeTEXT        aviFCC('t','x','t','s') | 
|  | #endif | 
|  | #define cktypeDIBbits         aviTWOCC('d','b') | 
|  | #define cktypeDIBcompressed   aviTWOCC('d','c') | 
|  | #define cktypePALchange       aviTWOCC('p','c') | 
|  | #define cktypeWAVEbytes       aviTWOCC('w','b') |