RAW - RAW File
[File Formats]
Detailed Description
- The file must be open/created with the functions imFileOpenRaw and imFileNewRaw.
Description
- Internal Implementation.
- Supports RAW binary images. You must know image parameters a priori.
You must set the IM_INT attributes "Width", "Height", "ColorMode", "DataType" before the imFileReadImageInfo/imFileWriteImageInfo functions.
- The data must be in binary form, but can start in an arbitrary offset from the begining of the file, use attribute "StartOffset". The default is at 0 offset.
- Integer sign and double precision can be converted using attribute "SwitchType".
The conversions will be BYTE<->CHAR, USHORT<->SHORT, INT<->UINT, FLOAT<->DOUBLE.
- Byte Order can be Little Endian (Intel=1) or Big Endian (Motorola=0), use the attribute "ByteOrder", the default is the current CPU.
- The lines can be aligned to a BYTE (1), WORD (2) or DWORD (4) boundaries, ue attribute "Padding" with the respective value.
- See im_raw.h
Features
Data Types: <all> Color Spaces: all, except MAP. Compressions: NONE - no compression Can have more than one image, depends on "StartOffset" attribute. Can have an alpha channel. Components can be packed or not. Lines arranged from top down to bottom or bottom up to top. Attributes: Width, Height, ColorMode, DataType IM_INT (1) StartOffset, SwitchType, ByteOrder, Padding IM_INT (1)
Functions | |
imFile * | imFileOpenRaw (const char *file_name, int *error) |
imFile * | imFileNewRaw (const char *file_name, int *error) |
Function Documentation
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Opens a RAW image file. See also imErrorCodes.
im.FileOpenRaw(file_name: string) -> ifile: imFile, error: number [in Lua 5] |
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Creates a RAW image file. See also imErrorCodes.
im.FileNewRaw(file_name: string) -> ifile: imFile, error: number [in Lua 5] |