X& btm_slot() const
{
#if 0
if (size == 0) throw StringError("ClumpBuffer is empty");
#endif
return data[tail * width];
}
X* btm_line() const
{
#if 0
if (size == 0) throw StringError("ClumpBuffer is empty");
#endif
return &(data[tail * width]);
}
X* getLine(unsigned int idx)
{
#if 0
if (idx >= size) throw StringError("Index into ClumpBuffer out of range");
#endif
idx = idx + head;
if (idx >= total) idx -= total;
return &(data[idx * width]);
}
X& operator[] (unsigned int idx)
{
#if 0
if (idx >= size) throw StringError("Index into ClumpBuffer out of range");
#endif
idx += head;
if (idx >= total) idx -= total;
return data[idx*width];
}
static int ReadTag(GTIF *gt,GTIFReadMethod scan,void *aux)
{
int i,j,tag;
char *vptr;
char tagname[100];
double *data,*dptr;
int count,nrows,ncols,num;
char message[1024];
scan(message,aux);
if (!strncmp(message,FMT_TAGEND,8)) return 0;
num=sscanf(message,"%[^( ] (%d,%d):\n",tagname,&nrows,&ncols);
if (num!=3) return StringError(message);
tag = GTIFTagCode(tagname);
if (tag < 0) return StringError(tagname);
count = nrows*ncols;
data = (double *) _GTIFcalloc(count * sizeof(double));
dptr = data;
for (i=0; i<nrows; i++)
{
scan(message,aux);
vptr = message;
for (j=0; j<ncols; j++)
{
if (!sscanf(vptr,"%lg",dptr++))
return StringError(vptr);
FINDCHAR(vptr,' ');
SKIPWHITE(vptr);
}
}
(gt->gt_methods.set)(gt->gt_tif, (pinfo_t) tag, count, data );
_GTIFFree( data );
return 1;
}
X* next_line()
{
#if 0
if (size == total) throw StringError("ClumpBuffer is full");
#endif
X* temp = &(data[tail*width]);
++tail;
if (tail == total) tail=0;
++size;
return temp;
}
X& next_slot()
{
#if 0
if (size == total) throw StringError("ClumpBuffer is full");
#endif
X& temp = data[tail * width];
++tail;
if (tail == total) tail = 0;
++size;
return temp;
}
X* pull_line()
{
#if 0
if (size == 0) throw StringError("ClumpBuffer is empty");
#endif
X* temp = &(data[head * width]);
++head;
if (head == total) head = 0;
--size;
return temp;
}
X& pull_slot()
{
#if 0
if (size == 0) throw StringError("ClumpBuffer is empty");
#endif
X& temp = data[head * width];
++head;
if (head == total) head = 0;
--size;
return temp;
}
ClumpBuffer(unsigned int sz, unsigned int w=1)
{
#if 0
if (sz < 1) throw StringError("Attempt to make ClumpBuffer with 0 slots");
if (w < 1) throw StringError("Attempt to make ClumpBuffer with 0 width");
#endif
width = 0;
head = 0;
tail = 0;
size = 0;
total = 0;
if (w >= 1 && sz >= 1)
{
data=new X[sz*w];
if (data)
{
width=w;
total=sz;
}
}
}
void apply_avg(ClumpBuffer<double>& vals, X* dest)
{
static double den;
static SmartRGBA sum;
static unsigned int i, j;
den = 0.0;
#if 0
if (vals.length() != size) throw StringError("Size of pixel/proportion ClumpBuffers do not match");
#endif
for (i = 0; i < size; ++i)
den += vals[i];
#if 0
if (den == 1.0) throw StringError("Identical axes should copy");
if (den <= 1.0) throw StringError("Enlargement should interpolate");
if (den == 0.0) throw StringError("Averaging has a denominator of zero");
#endif
if (width < 2)
{
sum = 0.0;
for (i = 0; i < size; ++i)
sum += ((SmartRGBA)(data[(head + i) % total]) * (vals[i]));
*dest = (RGBA)(sum / den);
}
else
{
for (j = 0; j < (unsigned int) width; ++j)
{
sum = 0.0;
for (i = 0; i < size; ++i)
{
sum += ((SmartRGBA)(data[((head+i)%total)*width+j]) * (vals[i]));
}
dest[j] = (RGBA)(sum / den);
}
}
}
void apply(ClumpBuffer<double>& vals, X* dest)
{
static double den;
static int i, j;
static SmartRGBA sum;
den = 0.0;
#if 0
if (vals.length() != size) throw StringError("Size of pixel/proportion ClumpBuffers do not match");
#endif
for (i = 0; i < (int)size; ++i)
den += vals[i];
#if 0
if (den != 1.0) throw StringError("Interpolation factors should add to 1");
#endif
if (width < 2)
{
sum = 0.0;
for (i = 0; i < (int)size; ++i)
{
sum += ((SmartRGBA)(data[(head+i)%total]) * (vals[i]));
}
*dest = (RGBA)sum;
}
else
{
for (j = 0; j < width; ++j)
{
sum = 0.0;
for (i = 0; i < (int)size; ++i)
{
sum += ((SmartRGBA)(data[((head+i)%total)*width+j]) * (vals[i]));
}
dest[j] = (RGBA)sum;
}
}
}
std::ostream& dumpLine(std::ostream& os, unsigned int idx)
{
#if 0
if (idx >= size) throw StringError("Index into ClumpBuffer out of range");
#endif
idx = idx + head;
if (idx >= total) idx -= total;
os << "[" << idx << "]: ";
for (int w_idx = 0; w_idx < width; ++w_idx)
{
os << data[idx * width + w_idx];
if ((w_idx + 1) < width) os << ", ";
}
os << std::endl;
return os;
}
static int ReadKey(GTIF *gt, GTIFReadMethod scan, void *aux)
{
tagtype_t ktype;
int count,outcount;
int vals_now,i;
geokey_t key;
int icode;
pinfo_t code;
short *sptr;
char name[1000];
char type[20];
double data[100];
double *dptr;
char *vptr;
int num;
char message[2048];
scan(message,aux);
if (!strncmp(message,FMT_KEYEND,8)) return 0;
num=sscanf(message,"%[^( ] (%[^,],%d):\n",name,type,&count);
if (num!=3) return StringError(message);
vptr = message;
FINDCHAR(vptr,':');
if (!*vptr) return StringError(message);
vptr+=2;
if( GTIFKeyCode(name) < 0 )
return StringError(name);
else
key = (geokey_t) GTIFKeyCode(name);
if( GTIFTypeCode(type) < 0 )
return StringError(type);
else
ktype = (tagtype_t) GTIFTypeCode(type);
/* skip white space */
SKIPWHITE(vptr);
if (!*vptr) return StringError(message);
switch (ktype)
{
case TYPE_ASCII:
{
char *cdata;
int out_char = 0;
FINDCHAR(vptr,'"');
if (!*vptr) return StringError(message);
cdata = (char *) _GTIFcalloc( count+1 );
vptr++;
while( out_char < count-1 )
{
if( *vptr == '\0' )
break;
else if( vptr[0] == '\\' && vptr[1] == 'n' )
{
cdata[out_char++] = '\n';
vptr += 2;
}
else if( vptr[0] == '\\' && vptr[1] == '\\' )
{
cdata[out_char++] = '\\';
vptr += 2;
}
else
cdata[out_char++] = *(vptr++);
}
if( out_char < count-1 ) return StringError(message);
if( *vptr != '"' ) return StringError(message);
cdata[count-1] = '\0';
GTIFKeySet(gt,key,ktype,count,cdata);
_GTIFFree( cdata );
}
break;
case TYPE_DOUBLE:
outcount = count;
for (dptr = data; count > 0; count-= vals_now)
{
vals_now = count > 3? 3: count;
for (i=0; i<vals_now; i++,dptr++)
{
if (!sscanf(vptr,"%lg" ,dptr))
StringError(vptr);
FINDCHAR(vptr,' ');
SKIPWHITE(vptr);
}
if (vals_now<count)
{
scan(message,aux);
vptr = message;
}
}
if (outcount==1)
GTIFKeySet(gt,key,ktype,outcount,data[0]);
else
GTIFKeySet(gt,key,ktype,outcount,data);
break;
case TYPE_SHORT:
if (count==1)
{
icode = GTIFValueCode(key,vptr);
if (icode < 0) return StringError(vptr);
code = (pinfo_t) icode;
GTIFKeySet(gt,key,ktype,count,code);
}
else /* multi-valued short - no such thing yet */
{
char* cdata;
memcpy(&cdata, &data, sizeof(void*));
sptr = (short *)cdata;
outcount = count;
for (; count > 0; count-= vals_now)
{
vals_now = count > 3? 3: count;
for (i=0; i<vals_now; i++,sptr++)
{
int work_int;
/* note: FMT_SHORT (%11hd) not supported on IRIX */
sscanf(message,"%11d",&work_int);
*sptr = (short) work_int;
scan(message,aux);
}
if (vals_now<count)
{
scan(message,aux);
vptr = message;
}
}
GTIFKeySet(gt,key,ktype,outcount,sptr);
}
break;
default:
return -1;
}
return 1;
}
/*
* call-seq:
* Win32::API.new(function, prototype='V', return='L', dll='kernel32')
*
* Creates and returns a new Win32::API object. The +function+ is the name
* of the Windows function.
*
* The +prototype+ is the function prototype for +function+. This can be a
* string or an array of characters. The possible valid characters are 'I'
* (integer), 'L' (long), 'V' (void), 'P' (pointer), 'K' (callback) or 'S'
* (string).
*
* The default is void ('V').
*
* Constant (const char*) strings should use 'S'. Pass by reference string
* buffers should use 'P'. The former is faster, but cannot be modified.
*
* The +return+ argument is the return type for the function. The valid
* characters are the same as for the +prototype+. The default is 'L' (long).
*
* The +dll+ is the name of the DLL file that the function is exported from.
* The default is 'kernel32'.
*
* If the function cannot be found then an API::Error is raised (a subclass
* of RuntimeError).
*
* Example:
*
* require 'win32/api'
* include Win32
*
* buf = 0.chr * 260
* len = [buf.length].pack('L')
*
* GetUserName = API.new('GetUserName', 'PP', 'I', 'advapi32')
* GetUserName.call(buf, len)
*
* puts buf.strip
*/
static VALUE api_init(int argc, VALUE* argv, VALUE self)
{
HMODULE hLibrary;
FARPROC fProc;
Win32API* ptr;
int i;
char* first = "A";
char* second = "W";
VALUE v_proc, v_proto, v_return, v_dll;
rb_scan_args(argc, argv, "13", &v_proc, &v_proto, &v_return, &v_dll);
Data_Get_Struct(self, Win32API, ptr);
// Convert a string prototype to an array of characters
if(rb_respond_to(v_proto, rb_intern("split")))
v_proto = rb_str_split(v_proto, "");
// Convert a nil or empty prototype to 'V' (void) automatically
if(NIL_P(v_proto) || RARRAY_LEN(v_proto) == 0){
v_proto = rb_ary_new();
rb_ary_push(v_proto, rb_str_new2("V"));
}
// Set an arbitrary limit of 20 parameters
if(20 < RARRAY_LEN(v_proto))
rb_raise(rb_eArgError, "too many parameters: %d\n", RARRAY_LEN(v_proto));
// Set the default dll to 'kernel32'
if(NIL_P(v_dll))
v_dll = rb_str_new2("kernel32");
// Set the default return type to 'L' (DWORD)
if(NIL_P(v_return))
v_return = rb_str_new2("L");
SafeStringValue(v_dll);
SafeStringValue(v_proc);
hLibrary = LoadLibrary(TEXT(RSTRING_PTR(v_dll)));
// The most likely cause of failure is a bad DLL load path
if(!hLibrary){
rb_raise(cAPILoadError, "LoadLibrary() function failed for '%s': %s",
RSTRING_PTR(v_dll),
StringError(GetLastError())
);
}
ptr->library = hLibrary;
/* Attempt to get the function. If it fails, try again with an 'A'
* appended. If that fails, try again with a 'W' appended. If that
* still fails, raise an API::LoadLibraryError.
*/
fProc = GetProcAddress(hLibrary, TEXT(RSTRING_PTR(v_proc)));
// Skip the ANSI and Wide function checks for MSVCRT functions.
if(!fProc){
if(strstr(RSTRING_PTR(v_dll), "msvcr")){
rb_raise(
cAPILoadError,
"Unable to load function '%s'",
RSTRING_PTR(v_proc)
);
}
else{
VALUE v_ascii = rb_str_new3(v_proc);
v_ascii = rb_str_cat(v_ascii, first, 1);
fProc = GetProcAddress(hLibrary, TEXT(RSTRING_PTR(v_ascii)));
if(!fProc){
VALUE v_unicode = rb_str_new3(v_proc);
v_unicode = rb_str_cat(v_unicode, second, 1);
fProc = GetProcAddress(hLibrary, TEXT(RSTRING_PTR(v_unicode)));
if(!fProc){
rb_raise(
cAPILoadError,
"Unable to load function '%s', '%s', or '%s'",
RSTRING_PTR(v_proc),
RSTRING_PTR(v_ascii),
RSTRING_PTR(v_unicode)
);
}
else{
rb_iv_set(self, "@effective_function_name", v_unicode);
}
}
else{
rb_iv_set(self, "@effective_function_name", v_ascii);
}
}
}
else{
rb_iv_set(self, "@effective_function_name", v_proc);
}
ptr->function = fProc;
// Push the numeric prototypes onto our int array for later use.
for(i = 0; i < RARRAY_LEN(v_proto); i++){
SafeStringValue(RARRAY_PTR(v_proto)[i]);
switch(*(char*)StringValuePtr(RARRAY_PTR(v_proto)[i])){
case 'L':
ptr->prototype[i] = _T_LONG;
break;
case 'P':
ptr->prototype[i] = _T_POINTER;
break;
case 'I': case 'B':
ptr->prototype[i] = _T_INTEGER;
break;
case 'V':
ptr->prototype[i] = _T_VOID;
break;
case 'K':
ptr->prototype[i] = _T_CALLBACK;
break;
case 'S':
ptr->prototype[i] = _T_STRING;
break;
default:
rb_raise(cAPIProtoError, "Illegal prototype '%s'",
StringValuePtr(RARRAY_PTR(v_proto)[i])
);
}
}
// Store the return type for later use.
// Automatically convert empty strings or nil to type void.
if(NIL_P(v_return) || RSTRING_LEN(v_return) == 0){
v_return = rb_str_new2("V");
ptr->return_type = _T_VOID;
}
else{
SafeStringValue(v_return);
switch(*RSTRING_PTR(v_return)){
case 'L':
ptr->return_type = _T_LONG;
break;
case 'P':
ptr->return_type = _T_POINTER;
break;
case 'I': case 'B':
ptr->return_type = _T_INTEGER;
break;
case 'V':
ptr->return_type = _T_VOID;
break;
case 'S':
ptr->return_type = _T_STRING;
break;
default:
rb_raise(cAPIProtoError, "Illegal return type '%s'",
RSTRING_PTR(v_return)
);
}
}
rb_iv_set(self, "@dll_name", v_dll);
rb_iv_set(self, "@function_name", v_proc);
rb_iv_set(self, "@prototype", v_proto);
rb_iv_set(self, "@return_type", v_return);
return self;
}
