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//-----------------------------------------------------------------------------
//
// ImageLib Sources
// Copyright (C) 2000-2009 by Denton Woods
// Last modified: 03/07/2009
//
// Filename: src-IL/src/il_raw.c
//
// Description: "Raw" file functions
//
//-----------------------------------------------------------------------------
#include "il_internal.h"
#ifndef IL_NO_RAW
ILboolean iLoadRawInternal(void);
ILboolean iSaveRawInternal(void);
//! Reads a raw file
ILboolean ilLoadRaw(ILconst_string FileName)
{
ILHANDLE RawFile;
ILboolean bRaw = IL_FALSE;
// No need to check for raw
/*if (!iCheckExtension(FileName, "raw")) {
ilSetError(IL_INVALID_EXTENSION);
return bRaw;
}*/
RawFile = iopenr(FileName);
if (RawFile == NULL) {
ilSetError(IL_COULD_NOT_OPEN_FILE);
return bRaw;
}
bRaw = ilLoadRawF(RawFile);
icloser(RawFile);
return bRaw;
}
//! Reads an already-opened raw file
ILboolean ilLoadRawF(ILHANDLE File)
{
ILuint FirstPos;
ILboolean bRet;
iSetInputFile(File);
FirstPos = itell();
bRet = iLoadRawInternal();
iseek(FirstPos, IL_SEEK_SET);
return bRet;
}
//! Reads from a raw memory "lump"
ILboolean ilLoadRawL(const void *Lump, ILuint Size)
{
iSetInputLump(Lump, Size);
return iLoadRawInternal();
}
// Internal function to load a raw image
ILboolean iLoadRawInternal()
{
if (iCurImage == NULL) {
ilSetError(IL_ILLEGAL_OPERATION);
return IL_FALSE;
}
iCurImage->Width = GetLittleUInt();
iCurImage->Height = GetLittleUInt();
iCurImage->Depth = GetLittleUInt();
iCurImage->Bpp = (ILubyte)igetc();
if (iread(&iCurImage->Bpc, 1, 1) != 1)
return IL_FALSE;
if (!ilTexImage(iCurImage->Width, iCurImage->Height, iCurImage->Depth, iCurImage->Bpp, 0, ilGetTypeBpc(iCurImage->Bpc), NULL)) {
return IL_FALSE;
}
iCurImage->Origin = IL_ORIGIN_LOWER_LEFT;
// Tries to read the correct amount of data
if (iread(iCurImage->Data, 1, iCurImage->SizeOfData) < iCurImage->SizeOfData)
return IL_FALSE;
if (ilIsEnabled(IL_ORIGIN_SET)) {
iCurImage->Origin = ilGetInteger(IL_ORIGIN_MODE);
}
else {
iCurImage->Origin = IL_ORIGIN_UPPER_LEFT;
}
if (iCurImage->Bpp == 1)
iCurImage->Format = IL_LUMINANCE;
else if (iCurImage->Bpp == 3)
iCurImage->Format = IL_RGB;
else // 4
iCurImage->Format = IL_RGBA;
return ilFixImage();
}
//! Writes a Raw file
ILboolean ilSaveRaw(const ILstring FileName)
{
ILHANDLE RawFile;
ILuint RawSize;
if (ilGetBoolean(IL_FILE_MODE) == IL_FALSE) {
if (iFileExists(FileName)) {
ilSetError(IL_FILE_ALREADY_EXISTS);
return IL_FALSE;
}
}
RawFile = iopenw(FileName);
if (RawFile == NULL) {
ilSetError(IL_COULD_NOT_OPEN_FILE);
return IL_FALSE;
}
RawSize = ilSaveRawF(RawFile);
iclosew(RawFile);
if (RawSize == 0)
return IL_FALSE;
return IL_TRUE;
}
//! Writes Raw to an already-opened file
ILuint ilSaveRawF(ILHANDLE File)
{
ILuint Pos;
iSetOutputFile(File);
Pos = itellw();
if (iSaveRawInternal() == IL_FALSE)
return 0; // Error occurred
return itellw() - Pos; // Return the number of bytes written.
}
//! Writes Raw to a memory "lump"
ILuint ilSaveRawL(void *Lump, ILuint Size)
{
ILuint Pos;
iSetOutputLump(Lump, Size);
Pos = itellw();
if (iSaveRawInternal() == IL_FALSE)
return 0; // Error occurred
return itellw() - Pos; // Return the number of bytes written.
}
// Internal function used to load the raw data.
ILboolean iSaveRawInternal()
{
if (iCurImage == NULL) {
ilSetError(IL_ILLEGAL_OPERATION);
return IL_FALSE;
}
SaveLittleUInt(iCurImage->Width);
SaveLittleUInt(iCurImage->Height);
SaveLittleUInt(iCurImage->Depth);
iputc(iCurImage->Bpp);
iputc(iCurImage->Bpc);
iwrite(iCurImage->Data, 1, iCurImage->SizeOfData);
return IL_TRUE;
}
#endif//IL_NO_RAW
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