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// ==========================================================
// GetType / Validate
//
// Design and implementation by
// - Floris van den Berg (flvdberg@wxs.nl)
// - Herv Drolon (drolon@infonie.fr)
//
// This file is part of FreeImage 3
//
// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
// THIS DISCLAIMER.
//
// Use at your own risk!
// ==========================================================
#ifdef _MSC_VER
#pragma warning (disable : 4786) // identifier was truncated to 'number' characters
#endif
#include "FreeImage.h"
#include "Utilities.h"
#include "FreeImageIO.h"
#include "Plugin.h"
// =====================================================================
// Generic stream file type access
// =====================================================================
FREE_IMAGE_FORMAT DLL_CALLCONV
FreeImage_GetFileTypeFromHandle(FreeImageIO *io, fi_handle handle, int size) {
if (handle != NULL) {
int fif_count = FreeImage_GetFIFCount();
for (int i = 0; i < fif_count; ++i) {
FREE_IMAGE_FORMAT fif = (FREE_IMAGE_FORMAT)i;
if (FreeImage_ValidateFIF(fif, io, handle)) {
if(fif == FIF_TIFF) {
// many camera raw files use a TIFF signature ...
// ... try to revalidate against FIF_RAW (even if it breaks the code genericity)
if (FreeImage_ValidateFIF(FIF_RAW, io, handle)) {
return FIF_RAW;
}
}
return fif;
}
}
}
return FIF_UNKNOWN;
}
// =====================================================================
// File stream file type access
// =====================================================================
FREE_IMAGE_FORMAT DLL_CALLCONV
FreeImage_GetFileType(const char *filename, int size) {
FreeImageIO io;
SetDefaultIO(&io);
FILE *handle = fopen(filename, "rb");
if (handle != NULL) {
FREE_IMAGE_FORMAT format = FreeImage_GetFileTypeFromHandle(&io, (fi_handle)handle, size);
fclose(handle);
return format;
}
return FIF_UNKNOWN;
}
FREE_IMAGE_FORMAT DLL_CALLCONV
FreeImage_GetFileTypeU(const wchar_t *filename, int size) {
#ifdef _WIN32
FreeImageIO io;
SetDefaultIO(&io);
FILE *handle = _wfopen(filename, L"rb");
if (handle != NULL) {
FREE_IMAGE_FORMAT format = FreeImage_GetFileTypeFromHandle(&io, (fi_handle)handle, size);
fclose(handle);
return format;
}
#endif
return FIF_UNKNOWN;
}
// =====================================================================
// Memory stream file type access
// =====================================================================
FREE_IMAGE_FORMAT DLL_CALLCONV
FreeImage_GetFileTypeFromMemory(FIMEMORY *stream, int size) {
FreeImageIO io;
SetMemoryIO(&io);
if (stream != NULL) {
return FreeImage_GetFileTypeFromHandle(&io, (fi_handle)stream, size);
}
return FIF_UNKNOWN;
}
// --------------------------------------------------------------------------
BOOL DLL_CALLCONV
FreeImage_ValidateFromHandle(FREE_IMAGE_FORMAT fif, FreeImageIO *io, fi_handle handle) {
return FreeImage_ValidateFIF(fif, io, handle);
}
BOOL DLL_CALLCONV
FreeImage_Validate(FREE_IMAGE_FORMAT fif, const char *filename) {
FreeImageIO io;
SetDefaultIO(&io);
FILE *handle = fopen(filename, "rb");
if (handle != NULL) {
BOOL bIsValidFIF = FreeImage_ValidateFromHandle(fif, &io, (fi_handle)handle);
fclose(handle);
return bIsValidFIF;
}
return FALSE;
}
BOOL DLL_CALLCONV
FreeImage_ValidateU(FREE_IMAGE_FORMAT fif, const wchar_t *filename) {
#ifdef _WIN32
FreeImageIO io;
SetDefaultIO(&io);
FILE *handle = _wfopen(filename, L"rb");
if (handle != NULL) {
BOOL bIsValidFIF = FreeImage_ValidateFromHandle(fif, &io, (fi_handle)handle);
fclose(handle);
return bIsValidFIF;
}
#endif
return FALSE;
}
BOOL DLL_CALLCONV
FreeImage_ValidateFromMemory(FREE_IMAGE_FORMAT fif, FIMEMORY *stream) {
FreeImageIO io;
SetMemoryIO(&io);
if (stream != NULL) {
BOOL bIsValidFIF = FreeImage_ValidateFromHandle(fif, &io, (fi_handle)stream);
return bIsValidFIF;
}
return FALSE;
}
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