/**
Moves the memory pointer to a specified location
@param stream Pointer to FIMEMORY structure
@param offset Number of bytes from origin
@param origin Initial position
@return Returns TRUE if successful, returns FALSE otherwise
*/
BOOL DLL_CALLCONV
FreeImage_SeekMemory(FIMEMORY *stream, long offset, int origin) {
FreeImageIO io;
SetMemoryIO(&io);
if (stream != NULL) {
int success = io.seek_proc((fi_handle)stream, offset, origin);
return (success == 0) ? TRUE : FALSE;
}
return FALSE;
}
BOOL DLL_CALLCONV
FreeImage_Validate(FREE_IMAGE_FORMAT fif, FreeImageIO &io, fi_handle handle) {
if (s_plugins != NULL) {
BOOL validated = FALSE;
PluginNode *node = s_plugins->FindNodeFromFIF(fif);
if (node) {
long tell = io.tell_proc(handle);
validated = (node != NULL) ? (node->m_enabled) ? (node->m_plugin->validate_proc != NULL) ? node->m_plugin->validate_proc(io, handle) : FALSE : FALSE : FALSE;
io.seek_proc(handle, tell, SEEK_SET);
}
return validated;
}
return FALSE;
}
virtual int seek(INT64 offset, int origin) {
if(substream) return substream->seek(offset, origin);
return _io->seek_proc(_handle, (long)offset, origin);
}
void
C_IStream::seekg (Imf::Int64 pos) {
_io->seek_proc(_handle, (unsigned)pos, SEEK_SET);
}
virtual void seekg(Imath::Int64 pos) {
_io->seek_proc(_handle, (unsigned)pos, SEEK_SET);
}
