1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libs/assimp/IFF.h	Sat Feb 01 19:58:19 2014 +0200
     1.3 @@ -0,0 +1,102 @@
     1.4 +
     1.5 +
     1.6 +// Definitions for the Interchange File Format (IFF)
     1.7 +// Alexander Gessler, 2006
     1.8 +// Adapted to Assimp August 2008
     1.9 +
    1.10 +#ifndef AI_IFF_H_INCLUDED
    1.11 +#define AI_IFF_H_INCLUDED
    1.12 +
    1.13 +#include "ByteSwap.h"
    1.14 +
    1.15 +namespace Assimp	{
    1.16 +namespace IFF		{
    1.17 +
    1.18 +#include "assimp/Compiler/pushpack1.h"
    1.19 +
    1.20 +/////////////////////////////////////////////////////////////////////////////////
    1.21 +//! Describes an IFF chunk header
    1.22 +/////////////////////////////////////////////////////////////////////////////////
    1.23 +struct ChunkHeader
    1.24 +{
    1.25 +	//! Type of the chunk header - FourCC
    1.26 +	uint32_t type;
    1.27 +
    1.28 +	//! Length of the chunk data, in bytes
    1.29 +	uint32_t length;
    1.30 +} PACK_STRUCT;
    1.31 +
    1.32 +
    1.33 +/////////////////////////////////////////////////////////////////////////////////
    1.34 +//! Describes an IFF sub chunk header
    1.35 +/////////////////////////////////////////////////////////////////////////////////
    1.36 +struct SubChunkHeader
    1.37 +{
    1.38 +	//! Type of the chunk header - FourCC
    1.39 +	uint32_t type;
    1.40 +
    1.41 +	//! Length of the chunk data, in bytes
    1.42 +	uint16_t length;
    1.43 +} PACK_STRUCT;
    1.44 +
    1.45 +#include "assimp/Compiler/poppack1.h"
    1.46 +
    1.47 +
    1.48 +#define AI_IFF_FOURCC(a,b,c,d) ((uint32_t) (((uint8_t)a << 24u) | \
    1.49 +	((uint8_t)b << 16u) | ((uint8_t)c << 8u) | ((uint8_t)d)))
    1.50 +
    1.51 +
    1.52 +#define AI_IFF_FOURCC_FORM AI_IFF_FOURCC('F','O','R','M')
    1.53 +
    1.54 +
    1.55 +/////////////////////////////////////////////////////////////////////////////////
    1.56 +//! Load a chunk header
    1.57 +//! @param outFile Pointer to the file data - points to the chunk data afterwards
    1.58 +//! @return Pointer to the chunk header
    1.59 +/////////////////////////////////////////////////////////////////////////////////
    1.60 +inline ChunkHeader* LoadChunk(uint8_t*& outFile)
    1.61 +{
    1.62 +	ChunkHeader* head = (ChunkHeader*) outFile;
    1.63 +	AI_LSWAP4(head->length);
    1.64 +	AI_LSWAP4(head->type);
    1.65 +	outFile += sizeof(ChunkHeader);
    1.66 +	return head;
    1.67 +}
    1.68 +
    1.69 +/////////////////////////////////////////////////////////////////////////////////
    1.70 +//! Load a sub chunk header
    1.71 +//! @param outFile Pointer to the file data - points to the chunk data afterwards
    1.72 +//! @return Pointer to the sub chunk header
    1.73 +/////////////////////////////////////////////////////////////////////////////////
    1.74 +inline SubChunkHeader* LoadSubChunk(uint8_t*& outFile)
    1.75 +{
    1.76 +	SubChunkHeader* head = (SubChunkHeader*) outFile;
    1.77 +	AI_LSWAP2(head->length);
    1.78 +	AI_LSWAP4(head->type);
    1.79 +	outFile += sizeof(SubChunkHeader);
    1.80 +	return head;
    1.81 +}
    1.82 +
    1.83 +/////////////////////////////////////////////////////////////////////////////////
    1.84 +//! Read the file header and return the type of the file and its size
    1.85 +//! @param outFile Pointer to the file data. The buffer must at 
    1.86 +//!   least be 12 bytes large.
    1.87 +//! @param fileType Receives the type of the file
    1.88 +//! @return 0 if everything was OK, otherwise an error message
    1.89 +/////////////////////////////////////////////////////////////////////////////////
    1.90 +inline const char* ReadHeader(uint8_t* outFile,uint32_t& fileType) 
    1.91 +{
    1.92 +	ChunkHeader* head = LoadChunk(outFile);
    1.93 +	if(AI_IFF_FOURCC_FORM != head->type)
    1.94 +	{
    1.95 +		return "The file is not an IFF file: FORM chunk is missing";
    1.96 +	}
    1.97 +	fileType = *((uint32_t*)(head+1));
    1.98 +	AI_LSWAP4(fileType);
    1.99 +	return 0;
   1.100 +}
   1.101 +
   1.102 +
   1.103 +}}
   1.104 +
   1.105 +#endif // !! AI_IFF_H_INCLUDED