I am new to Python, I am conducting my MS research in deep learning. I was trying to run the NER Tagger provided by https://github.com/glample/tagger in Anaconda Prompt and cmd but I got the following error on Windows 7 32 bit-python 2.7 with numpy and theano installed.
Sorry for pasting such a long error but I am unable to fix this.
00878 {
00879 // save references to outputs prior to updating storage containers
00880 assert (self->n_output_vars >= self->n_updates);
00881 Py_DECREF(rval);
00882 rval = PyList_New(self->n_output_vars);
00883 for (int i = 0; i < (self->n_output_vars); ++i)
00884 {
00885 Py_ssize_t src = self->output_vars[i];
00886 PyObject * item = PyList_GetItem(self->var_value_cells[src
], 0);
00887 if ((output_subset == NULL || output_subset[i]) &&
00888 self->var_computed[src] != 1)
00889 {
00890 err = 1;
00891 PyErr_Format(PyExc_AssertionError,
00892 "The compute map of output %d should cont
ain "
00893 "1 at the end of execution, not %d.",
00894 i, self->var_computed[src]);
00895 break;
00896 }
00897 Py_INCREF(item);
00898 PyList_SetItem(rval, i, item);
00899 }
00900 }
00901
00902 if (!err)
00903 {
00904 // Update the inputs that have an update rule
00905 for (int i = 0; i < self->n_updates; ++i)
00906 {
00907 PyObject* tmp = PyList_GetItem(rval, self->n_output_vars -
self->n_updates + i);
00908 Py_INCREF(tmp);
00909 Py_ssize_t dst = self->update_storage[i];
00910 PyList_SetItem(self->var_value_cells[dst], 0, tmp);
00911 }
00912 }
00913 }
00914
00915 /*
00916 Clear everything that is left and not an output. This is needed
00917 for lazy evaluation since the current GC algo is too conservative
00918 with lazy graphs.
00919 /
00920 if (self->allow_gc && !err)
00921 {
00922 for (Py_ssize_t i = 0; i < self->n_vars; ++i)
00923 {
00924 int do_cleanup = 1;
00925 if (!self->var_has_owner[i] || !self->var_computed[i])
00926 continue;
00927 for (int j = 0; j < self->n_output_vars; ++j)
00928 {
00929 if (i == self->output_vars[j])
00930 {
00931 do_cleanup = 0;
00932 break;
00933 }
00934 }
00935 if (!do_cleanup)
00936 continue;
00937 Py_INCREF(Py_None);
00938 PyList_SetItem(self->var_value_cells[i], 0, Py_None);
00939 }
00940 }
00941 if (output_subset != NULL)
00942 free(output_subset);
00943
00944 Py_DECREF(one);
00945 Py_DECREF(zero);
00946 if (err)
00947 {
00948 Py_DECREF(rval);
00949 return NULL;
00950 }
00951 return rval;
00952 }
00953
00954 #if 0
00955 static PyMethodDef CLazyLinker_methods[] = {
00956 {
00957 //"name", (PyCFunction)CLazyLinker_accept, METH_VARARGS, "Return t
he name, combining the first and last name"
00958 },
00959 {NULL} / Sentinel /
00960 };
00961 #endif
00962
00963
00964 static PyObject *
00965 CLazyLinker_get_allow_gc(CLazyLinker self, void closure)
00966 {
00967 return PyBool_FromLong(self->allow_gc);
00968 }
00969
00970 static int
00971 CLazyLinker_set_allow_gc(CLazyLinker self, PyObject value, void closu
re)
00972 {
00973 if(!PyBool_Check(value))
00974 return -1;
00975
00976 if (value == Py_True)
00977 self->allow_gc = true;
00978 else
00979 self->allow_gc = false;
00980 return 0;
00981 }
00982
00983 static PyGetSetDef CLazyLinker_getset[] = {
00984 {(char)"allow_gc",
00985 (getter)CLazyLinker_get_allow_gc,
00986 (setter)CLazyLinker_set_allow_gc,
00987 (char)"do this function support allow_gc",
00988 NULL},
00989 {NULL, NULL, NULL, NULL} / Sentinel /
00990 };
00991 static PyMemberDef CLazyLinker_members[] = {
00992 {(char)"nodes", T_OBJECT_EX, offsetof(CLazyLinker, nodes), 0,
00993 (char)"list of nodes"},
00994 {(char)"thunks", T_OBJECT_EX, offsetof(CLazyLinker, thunks), 0,
00995 (char)"list of thunks in program"},
00996 {(char*)"call_counts", T_OBJECT_EX, offsetof(CLazyLinker, call_count
s), 0,
00997 (char*)"number of calls of each thunk"},
00998 {(char*)"call_times", T_OBJECT_EX, offsetof(CLazyLinker, call_times)
, 0,
00999 (char*)"total runtime in each thunk"},
01000 {(char*)"position_of_error", T_INT, offsetof(CLazyLinker, position_o
f_error), 0,
01001 (char*)"position of failed thunk"},
01002 {(char*)"time_thunks", T_INT, offsetof(CLazyLinker, do_timing), 0,
01003 (char*)"bool: nonzero means call will time thunks"},
01004 {(char*)"need_update_inputs", T_INT, offsetof(CLazyLinker, need_upda
te_inputs), 0,
01005 (char*)"bool: nonzero means Function.call must implement update
mechanism"},
01006 {NULL} /* Sentinel */
01007 };
01008
01009 static PyTypeObject lazylinker_ext_CLazyLinkerType = {
01010 #if defined(NPY_PY3K)
01011 PyVarObject_HEAD_INIT(NULL, 0)
01012 #else
01013 PyObject_HEAD_INIT(NULL)
01014 0, /ob_size/
01015 #endif
01016 "lazylinker_ext.CLazyLinker", /tp_name/
01017 sizeof(CLazyLinker), /tp_basicsize/
01018 0, /tp_itemsize/
01019 CLazyLinker_dealloc, /tp_dealloc/
01020 0, /tp_print/
01021 0, /tp_getattr/
01022 0, /tp_setattr/
01023 0, /tp_compare/
01024 0, /tp_repr/
01025 0, /tp_as_number/
01026 0, /tp_as_sequence/
01027 0, /tp_as_mapping/
01028 0, /*tp_hash /
01029 CLazyLinker_call, /tp_call/
01030 0, /tp_str/
01031 0, /tp_getattro/
01032 0, /tp_setattro/
01033 0, /tp_as_buffer/
01034 Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /tp_flags/
01035 "CLazyLinker object", / tp_doc /
01036 0, / tp_traverse /
01037 0, / tp_clear /
01038 0, / tp_richcompare /
01039 0, / tp_weaklistoffset /
01040 0, / tp_iter /
01041 0, / tp_iternext /
01042 0,//CLazyLinker_methods, / tp_methods /
01043 CLazyLinker_members, / tp_members /
01044 CLazyLinker_getset, / tp_getset /
01045 0, / tp_base /
01046 0, / tp_dict /
01047 0, / tp_descr_get /
01048 0, / tp_descr_set /
01049 0, / tp_dictoffset /
01050 (initproc)CLazyLinker_init,/ tp_init /
01051 0, / tp_alloc /
01052 CLazyLinker_new, / tp_new */
01053 };
01054
01055 static PyObject * get_version(PyObject *dummy, PyObject *args)
01056 {
01057 PyObject *result = PyFloat_FromDouble(0.211);
01058 return result;
01059 }
01060
01061 static PyMethodDef lazylinker_ext_methods[] = {
01062 {"get_version", get_version, METH_VARARGS, "Get extension version."},
01063 {NULL, NULL, 0, NULL} /* Sentinel /
01064 };
01065
01066 #if defined(NPY_PY3K)
01067 static struct PyModuleDef moduledef = {
01068 PyModuleDef_HEAD_INIT,
01069 "lazylinker_ext",
01070 NULL,
01071 -1,
01072 lazylinker_ext_methods,
01073 NULL,
01074 NULL,
01075 NULL,
01076 NULL
01077 };
01078 #endif
01079 #if defined(NPY_PY3K)
01080 #define RETVAL m
01081 PyMODINIT_FUNC
01082 PyInit_lazylinker_ext(void) {
01083 #else
01084 #define RETVAL
01085 PyMODINIT_FUNC
01086 initlazylinker_ext(void)
01087 {
01088 #endif
01089 PyObject m;
01090
01091 lazylinker_ext_CLazyLinkerType.tp_new = PyType_GenericNew;
01092 if (PyType_Ready(&lazylinker_ext_CLazyLinkerType) < 0)
01093 return RETVAL;
01094 #if defined(NPY_PY3K)
01095 m = PyModule_Create(&moduledef);
01096 #else
01097 m = Py_InitModule3("lazylinker_ext", lazylinker_ext_methods,
01098 "Example module that creates an extension type.")
;
01099 #endif
01100 Py_INCREF(&lazylinker_ext_CLazyLinkerType);
01101 PyModule_AddObject(m, "CLazyLinker", (PyObject *)&lazylinker_ext_CLa
zyLinkerType);
01102
01103 return RETVAL;
01104 }
01105
Problem occurred during compilation with the command line below:
"C:\MinGW\bin\g++.exe" -shared -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -m
32 -I"C:\ProgramData\Anaconda2\lib\site-packages\numpy\core\include" -I"C:\Progr
amData\Anaconda2\include" -I"C:\ProgramData\Anaconda2\lib\site-packages\theano\g
of" -L"C:\ProgramData\Anaconda2\libs" -L"C:\ProgramData\Anaconda2" -o C:\Users\R
abia Noureen\AppData\Local\Theano\compiledir_Windows-7-6.1.7601-SP1-x86_Family_6
Model_42_Stepping_7_GenuineIntel-2.7.13-32\lazylinker_ext\lazylinker_ext.pyd C:
\Users\Rabia Noureen\AppData\Local\Theano\compiledir_Windows-7-6.1.7601-SP1-x86
Family_6_Model_42_Stepping_7_GenuineIntel-2.7.13-32\lazylinker_ext\mod.cpp -lpyt
hon27
g++.exe: error: Noureen\AppData\Local\Theano\compiledir_Windows-7-6.1.7601-SP1-x
86_Family_6_Model_42_Stepping_7_GenuineIntel-2.7.13-32\lazylinker_ext\lazylinker
_ext.pyd: No such file or directory
g++.exe: error: C:\Users\Rabia: No such file or directory
g++.exe: error: Noureen\AppData\Local\Theano\compiledir_Windows-7-6.1.7601-SP1-x
86_Family_6_Model_42_Stepping_7_GenuineIntel-2.7.13-32\lazylinker_ext\mod.cpp: N
o such file or directory
Traceback (most recent call last):
File "./tagger.py", line 8, in
from loader import prepare_sentence
File "C:\ProgramData\Anaconda2\tagger-master\tagger-master\loader.py", line 4,
in
from utils import create_dico, create_mapping, zero_digits
File "C:\ProgramData\Anaconda2\tagger-master\tagger-master\utils.py", line 5,
in
import theano
File "C:\ProgramData\Anaconda2\lib\site-packages\theano_init_.py", line 66,
in
from theano.compile import (
File "C:\ProgramData\Anaconda2\lib\site-packages\theano\compile_init_.py",
line 10, in
from theano.compile.function_module import *
File "C:\ProgramData\Anaconda2\lib\site-packages\theano\compile\function_modul
e.py", line 21, in
import theano.compile.mode
File "C:\ProgramData\Anaconda2\lib\site-packages\theano\compile\mode.py", line
10, in
import theano.gof.vm
File "C:\ProgramData\Anaconda2\lib\site-packages\theano\gof\vm.py", line 662,
in
from . import lazylinker_c
File "C:\ProgramData\Anaconda2\lib\site-packages\theano\gof\lazylinker_c.py",
line 127, in
preargs=args)
File "C:\ProgramData\Anaconda2\lib\site-packages\theano\gof\cmodule.py", line
2316, in compile_str
(status, compile_stderr.replace('\n', '. ')))
Exception: Compilation failed (return status=1): g++.exe: error: Noureen\AppData
\Local\Theano\compiledir_Windows-7-6.1.7601-SP1-x86_Family_6_Model_42_Stepping_7
_GenuineIntel-2.7.13-32\lazylinker_ext\lazylinker_ext.pyd: No such file or direc
. g++.exe: error: Noureen\AppData\Local\Theano\compiledir_Windows-7-6.1.7601-SP1
-x86_Family_6_Model_42_Stepping_7_GenuineIntel-2.7.13-32\lazylinker_ext\mod.cpp:
. o such file or directory
Related
I am working on STM32F756ZG with FreeRTOS. I have one network thread that is made using osThreadDef() which is a part of the CMSIS-RTOS API. I also have other tasks running that are created using xTaskCreate() which is a part of the freeRTOS API.
I have a Semaphore that is shared by a tempSensor and EEPROM. In the network thread, the I try to get the values for IP address from the EEPROM using I2C protocol. It successfully takes the Semaphore using xSemaphoreTake() but when its time to give up the Semaphore using xSemaphoreGive() it gets lost and when I hit pause it stays in I2C_WaitOnFlagUntilTimeout().As a result it never loads the webpage.
The other tasks run fine and the temp sensor that also uses I2c and sempahore returns the values correctly.
So my question is if this problem is created because of using semaphore between two threads each generated by different OS API. I am really struggling with this and any help would be really appreciated. Thanks a lot!
I am adding a little code snippet here.
/* Init networking thread */
osThreadDef(Start, StartNetworkThread, osPriorityNormal, 0, configMINIMAL_STACK_SIZE * 2);
osThreadCreate (osThread(Start), NULL);
start_threads(3);
HAL_ADC_Start_DMA(&hadc1, (uint32_t*) adc1vals, 1);
HAL_ADC_Start_DMA(&hadc2, (uint32_t*) adc2vals, 1);
xTaskCreate (vADC1, "vADC1", configMINIMAL_STACK_SIZE, NULL, uxPriority + 3, ( TaskHandle_t * ) NULL );
xTaskCreate (vADC2, "vADC2", configMINIMAL_STACK_SIZE, NULL, uxPriority + 3, ( TaskHandle_t * ) NULL );
xTaskCreate (vPIDloop, "vPIDloop", configMINIMAL_STACK_SIZE + 100, NULL, uxPriority + 2, ( TaskHandle_t * ) NULL );
xTaskCreate (vIO, "vIO", configMINIMAL_STACK_SIZE + 512, NULL, uxPriority + 1, ( TaskHandle_t * ) NULL ); //Run IO at least important priority
xTaskCreate (vControl, "vControl", configMINIMAL_STACK_SIZE + 512, NULL, uxPriority + 1, ( TaskHandle_t * ) NULL ); //Run control at least important priority
This is how my Semaphore is initialized:
// Initialize the semaphore that controls eeprom access
xI2C3Semaphore = xSemaphoreCreateMutex();
if( xI2C3Semaphore ==NULL)
{
while(1);
}
Following is the code for when I am reading the EEPROM:
int result = 0;
NvVarsEeprom_t eepromVar;
memset( &eepromVar, 0xff, sizeof(eepromVar) );
if( xI2C3Semaphore != NULL )
{
// Wait forever for semaphore
if( xSemaphoreTake( xI2C3Semaphore, (TickType_t)10 ) == pdTRUE )
{
// count = uxSemaphoreGetCount(xI2C3Semaphore);
// Read from EEPROM
if( nvdata_read((char *)&eepromVar, sizeof(eepromVar), addr) != HAL_OK )
{
//vTaskDelay(5);
if( nvdata_read((char *)&eepromVar, sizeof(eepromVar), addr) != HAL_OK )
{
return ERR_EEPROM;
}
}
//count = uxSemaphoreGetCount(xI2C3Semaphore);
// Give up the semaphore
if(xSemaphoreGive( xI2C3Semaphore ) != pdTRUE)
{
while(1);
}
// count = uxSemaphoreGetCount(xI2C3Semaphore);
}
}
if( result == 0 )
{
eepromVar.valid = NVP_VALID;
}
if( eepromVar.valid == NVP_VALID )
{
strncpy( buf, eepromVar.str, EepromVarSize-1 );
buf[EepromVarSize-1] = '\0';
}
else
{
return ERR_EEPROM;
}
return result;
The next code snippet is when I am reading from the temp sensor:
int tempC = 0;
if( xI2C3Semaphore != NULL )
{
// Wait forever for semaphore
if( xSemaphoreTake( xI2C3Semaphore, (TickType_t)10 ) == pdTRUE )
{
// Read from I2C3
tempC = heatSink_read();
// Give up the semaphore
if(xSemaphoreGive( xI2C3Semaphore ) != pdTRUE)
{
while(1);
}
}
}
return tempC;
When I jump from the bootloader to the application and try to read values from the EEPROM, I can take the Semaphore but I does not give it back using xSemaphoreGive().
First of all, make sure semaphore got initialized properly, like this:
if ((SemId_I2C1_Rx = xSemaphoreCreateBinary()) == NULL) { goto InitFailed; };
Secondly, make sure you are using proper function for giving the semaphore.
If it is given from an Interrupt, you have to use
xSemaphoreGiveFromISR(SemId_I2C1_Rx, NULL);
I am creating Smart.log file using following code :
void S_SetLogFileName()
{
char HomeDir[MAX_PATH];
if (strlen(LogFileName) == 0)
{
TCHAR AppDataFolderPath[MAX_PATH];
if (SUCCEEDED(SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL, 0, AppDataFolderPath)))
{
sprintf(AppDataFolderPath, "%s\\Netcom\\Logs", AppDataFolderPath);
if (CreateDirectory(AppDataFolderPath, NULL) || ERROR_ALREADY_EXISTS == GetLastError())
sprintf(LogFileName,"%s\\Smart.log",AppDataFolderPath);
else
goto DEFAULTVALUE;
}
else
{
DEFAULTVALUE:
if (S_GetHomeDir(HomeDir,sizeof(HomeDir)))
sprintf(LogFileName,"%s\\Bin\\Smart.log",HomeDir);
else
strcpy(LogFileName,"Smart.log");
}
}
}
and opening and modifying it as follows:
void LogMe(char *FileName,char *s, BOOL PrintTimeStamp)
{
FILE *stream;
char buff[2048] = "";
char date[256];
char time[256];
SYSTEMTIME SystemTime;
if(PrintTimeStamp)
{
GetLocalTime(&SystemTime);
GetDateFormat(LOCALE_USER_DEFAULT,0,&SystemTime,"MM':'dd':'yyyy",date,sizeof(date));
GetTimeFormat(LOCALE_USER_DEFAULT,0,&SystemTime,"HH':'mm':'ss",time,sizeof(time));
sprintf(buff,"[%d - %s %s]", GetCurrentThreadId(),date,time);
}
stream = fopen( FileName, "a" );
fprintf( stream, "%s %s\n", buff, s );
fclose( stream );
}
Here's the problem:
UserA runs the program first, it creates \ProgramData\Netcom\Smart.log using S_SetLogFileName()
UserB runs the program next, it tries to append/ modify to Smart.log and gets access denied.
What should i need to change in my code to allow all users to access Smart.log file ?
This is solution, I am looking for, Hope useful for some one.
refer from :
void SetFilePermission(LPCTSTR FileName)
{
PSID pEveryoneSID = NULL;
PACL pACL = NULL;
EXPLICIT_ACCESS ea[1];
SID_IDENTIFIER_AUTHORITY SIDAuthWorld = SECURITY_WORLD_SID_AUTHORITY;
// Create a well-known SID for the Everyone group.
AllocateAndInitializeSid(&SIDAuthWorld, 1,
SECURITY_WORLD_RID,
0, 0, 0, 0, 0, 0, 0,
&pEveryoneSID);
// Initialize an EXPLICIT_ACCESS structure for an ACE.
ZeroMemory(&ea, 1 * sizeof(EXPLICIT_ACCESS));
ea[0].grfAccessPermissions = 0xFFFFFFFF;
ea[0].grfAccessMode = GRANT_ACCESS;
ea[0].grfInheritance = NO_INHERITANCE;
ea[0].Trustee.TrusteeForm = TRUSTEE_IS_SID;
ea[0].Trustee.TrusteeType = TRUSTEE_IS_WELL_KNOWN_GROUP;
ea[0].Trustee.ptstrName = (LPTSTR)pEveryoneSID;
// Create a new ACL that contains the new ACEs.
SetEntriesInAcl(1, ea, NULL, &pACL);
// Initialize a security descriptor.
PSECURITY_DESCRIPTOR pSD = (PSECURITY_DESCRIPTOR)LocalAlloc(LPTR,
SECURITY_DESCRIPTOR_MIN_LENGTH);
InitializeSecurityDescriptor(pSD, SECURITY_DESCRIPTOR_REVISION);
// Add the ACL to the security descriptor.
SetSecurityDescriptorDacl(pSD,
TRUE, // bDaclPresent flag
pACL,
FALSE); // not a default DACL
//Change the security attributes
SetFileSecurity(FileName, DACL_SECURITY_INFORMATION, pSD);
if (pEveryoneSID)
FreeSid(pEveryoneSID);
if (pACL)
LocalFree(pACL);
if (pSD)
LocalFree(pSD);
}
I am trying to set up a global hotkey on Linux.
I had initially used x11 (libX11.so) however I had to do this from a thread. I tried it but the XPendingEvent and XNextEvent would eventually crash the app.
So I switched to xcb (libxcb.so.1). There is no errors, I even check with xcb_request_check however the event loop is not picking anything up. As soon as I start the loop, I get only one event which looks like this:
{
response_type: 0,
pad0: 10,
sequence: 2,
pad: [620, 2162688, 0, 0, 0, 0, 0],
full_sequence: 2
}
Here is my code, I actually do this in js-ctypes, but I cut down all the stuff to just show simple agnostic as possible code:
conn = xcb_connect(null, null);
keysyms = xcb_key_symbols_alloc(conn);
keycodesPtr = xcb_key_symbols_get_keycode(keysyms, XK_Space);
setup = xcb_get_setup(conn);
screens = xcb_setup_roots_iterator(setup);
screensCnt = screens.rem;
for (var i=0; i<screensCnt; i++) {
rez_grab = xcb_grab_key(conn, 1, screens.data.root, XCB_MOD_MASK_ANY, keycodesPtr[0], XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
rez_err = xcb_request_check(conn, rez_grab);
// rez_err is null
xcb_screen_next(&screens);
}
xcb_flush(conn);
// start event loop
while (true) {
ev = xcb_poll_for_event(conn);
console.log(ev);
if (ev != null) {
free(ev);
}
Sleep(50);
}
console.log(ev) gives me what I posted above earlier, response_type of 0 and then forever after that ev is just null.
Does anyone know what's up? rez_grab as a raw string is xcb_void_cookie_t(2)
Thanks much
Figured it out at long last!! Ah figured this one out! I was using XCB_MOD_MASK_ANY and this constant works on Debian but not on Ubuntu, which is what I was using to test. I switched that up to use num lock, caps lock etc and now it works! :)
ostypes.API('xcb_grab_key')(conn, 1, screens.data.contents.root, ostypes.CONST.XCB_MOD_MASK_LOCK, keycodesArr[j], ostypes.CONST.XCB_GRAB_MODE_ASYNC, ostypes.CONST.XCB_GRAB_MODE_ASYNC); // caps lock
ostypes.API('xcb_grab_key')(conn, 1, screens.data.contents.root, ostypes.CONST.XCB_MOD_MASK_2, keycodesArr[j], ostypes.CONST.XCB_GRAB_MODE_ASYNC, ostypes.CONST.XCB_GRAB_MODE_ASYNC); // num lock
ostypes.API('xcb_grab_key')(conn, 1, screens.data.contents.root, ostypes.CONST.XCB_MOD_MASK_LOCK | ostypes.CONST.XCB_MOD_MASK_2, keycodesArr[j], ostypes.CONST.XCB_GRAB_MODE_ASYNC, ostypes.CONST.XCB_GRAB_MODE_ASYNC); // caps lock AND num lock
that was very very crazy i had no idea the XCB_MOD_MASK_ANY constant didnt work on Ubuntu -
var rez_grab = ostypes.API('xcb_grab_key')(conn, 1, screens.data.contents.root, ostypes.CONST.XCB_MOD_MASK_ANY, keycodesArr[j], ostypes.CONST.XCB_GRAB_MODE_ASYNC, ostypes.CONST.XCB_GRAB_MODE_ASYNC);
I also tried #n.m's code. On ubuntu it didnt work, but worked on debian -
#include <xcb/xcb.h>
#define XK_LATIN1
#include <xcb/xcb_keysyms.h>
#include <X11/keysymdef.h>
#include <stdio.h>
#include <stdlib.h>
int
main ()
{
xcb_connection_t *conn;
conn = xcb_connect (NULL, NULL);
xcb_key_symbols_t * keysyms = xcb_key_symbols_alloc(conn);
xcb_keycode_t * keycodesPtr = xcb_key_symbols_get_keycode(keysyms, XK_space);
const xcb_setup_t* setup = xcb_get_setup(conn);
xcb_screen_iterator_t screens = xcb_setup_roots_iterator(setup);
int screensCnt = screens.rem;
for (int i=0; i<screensCnt; i++) {
xcb_void_cookie_t rez_grab = xcb_grab_key(conn, 1, screens.data->root, XCB_MOD_MASK_ANY, keycodesPtr[0], XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
const static uint32_t values[] = { XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_BUTTON_PRESS };
xcb_change_window_attributes (conn, screens.data->root, XCB_CW_EVENT_MASK, values);
xcb_screen_next(&screens);
}
xcb_flush(conn);
// start event loop
while (1) {
xcb_generic_event_t *ev = xcb_wait_for_event(conn);
if (ev && ((ev->response_type & ~0x80) == XCB_KEY_PRESS))
{
xcb_key_press_event_t *kp = (xcb_key_press_event_t *)ev;
printf ("Got key press %d\n", (int)kp->event);
}
if (ev != NULL) {
free(ev);
}
}
return 0;
}
I'm new to C++ and trying to add OpenCV into Microsoft's Kinect samples. I was able to do it for the ColorBasics-D2D sample by modifying this function
void CColorBasics::ProcessColor()
{
HRESULT hr;
NUI_IMAGE_FRAME imageFrame;
// Attempt to get the color frame
hr = m_pNuiSensor->NuiImageStreamGetNextFrame(m_pColorStreamHandle, 0, &imageFrame);
if (FAILED(hr))
{
return;
}
INuiFrameTexture * pTexture = imageFrame.pFrameTexture;
NUI_LOCKED_RECT LockedRect;
// Lock the frame data so the Kinect knows not to modify it while we're reading it
pTexture->LockRect(0, &LockedRect, NULL, 0);
// Make sure we've received valid data
if (LockedRect.Pitch != 0)
{
BYTE * pBuffer = (BYTE*) LockedRect.pBits;
cvSetData(img,(BYTE*) pBuffer, img->widthStep);
Mat &m = Mat(img);
Mat &hsv = Mat();
vector<Mat> mv = vector<Mat>(3,Mat(cvSize(640,480),CV_8UC1));
cvtColor(m,hsv,CV_BGR2HSV);
cvtColor(hsv,m,CV_HSV2BGR);//*/
IplImage iplimg(m);
cvNamedWindow("rgb",1);
cvShowImage("rgb",&iplimg);
// Draw the data with Direct2D
m_pDrawColor->Draw(static_cast<BYTE *>(LockedRect.pBits), LockedRect.size);
// If the user pressed the screenshot button, save a screenshot
if (m_bSaveScreenshot)
{
WCHAR statusMessage[cStatusMessageMaxLen];
// Retrieve the path to My Photos
WCHAR screenshotPath[MAX_PATH];
GetScreenshotFileName(screenshotPath, _countof(screenshotPath));
// Write out the bitmap to disk
hr = SaveBitmapToFile(static_cast<BYTE *>(LockedRect.pBits), cColorWidth, cColorHeight, 32, screenshotPath);
if (SUCCEEDED(hr))
{
// Set the status bar to show where the screenshot was saved
StringCchPrintf( statusMessage, cStatusMessageMaxLen, L"Screenshot saved to %s", screenshotPath);
}
else
{
StringCchPrintf( statusMessage, cStatusMessageMaxLen, L"Failed to write screenshot to %s", screenshotPath);
}
SetStatusMessage(statusMessage);
// toggle off so we don't save a screenshot again next frame
m_bSaveScreenshot = false;
}
}
// We're done with the texture so unlock it
pTexture->UnlockRect(0);
// Release the frame
m_pNuiSensor->NuiImageStreamReleaseFrame(m_pColorStreamHandle, &imageFrame);
}
This works fine. However, when I wanted to add something like this to the SkeletalViewer example, it is just displaying an empty window.
/// <summary>
/// Handle new color data
/// </summary>
/// <returns>true if a frame was processed, false otherwise</returns>
bool CSkeletalViewerApp::Nui_GotColorAlert( )
{
NUI_IMAGE_FRAME imageFrame;
bool processedFrame = true;
HRESULT hr = m_pNuiSensor->NuiImageStreamGetNextFrame( m_pVideoStreamHandle, 0, &imageFrame );
if ( FAILED( hr ) )
{
return false;
}
INuiFrameTexture * pTexture = imageFrame.pFrameTexture;
NUI_LOCKED_RECT LockedRect;
pTexture->LockRect( 0, &LockedRect, NULL, 0 );
if ( LockedRect.Pitch != 0 )
{
BYTE * pBuffer = (BYTE*) LockedRect.pBits;
cvSetData(img,(BYTE*) pBuffer, img->widthStep);
Mat m(img);
IplImage iplimg(m);
cvNamedWindow("rgb",1);
cvShowImage("rgb",&iplimg);
m_pDrawColor->Draw( static_cast<BYTE *>(LockedRect.pBits), LockedRect.size );
}
else
{
OutputDebugString( L"Buffer length of received texture is bogus\r\n" );
processedFrame = false;
}
pTexture->UnlockRect( 0 );
m_pNuiSensor->NuiImageStreamReleaseFrame( m_pVideoStreamHandle, &imageFrame );
return processedFrame;
}
I'm not sure why the same code doesn't work in this example. I'm using Visual Studio 2010 and OpenCV 2.4.2.
Thanks
Figured it out. Changed it to this
if ( LockedRect.Pitch != 0 )
{
BYTE * pBuffer = static_cast<BYTE *>(LockedRect.pBits);
cvSetData(img,(BYTE*) pBuffer, img->widthStep);
Mat m(img);
IplImage iplimg(m);
cvNamedWindow("rgb",1);
cvShowImage("rgb",&iplimg);
waitKey(1);
m_pDrawColor->Draw( static_cast<BYTE *>(LockedRect.pBits), LockedRect.size );
}
I'm new in OpenGL.
I want to draw somethink using OpenGL in Windows Forms.
If I use Win32 application with WinMain method, application working.
In WinMain method, I fill HWND with CreateWindow() function and ı give WinMain parameters to CreateWindows.
But I want to get Handle from Windows form i cant get this. Everytime
wglCreateContext(hdc) return NULL
there is a example which is I take
public:
COpenGL(System::Windows::Forms::Form ^ parentForm, GLsizei iWidth, GLsizei iHeight)
{
CreateParams^ cp = gcnew CreateParams;
// Set the position on the form
cp->X = 0;
cp->Y = 0;
cp->Height = iHeight;
cp->Width = iWidth;
// Specify the form as the parent.
cp->Parent = parentForm->Handle;
// Create as a child of the specified parent and make OpenGL compliant (no clipping)
cp->Style = WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
// Create the actual window
this->CreateHandle(cp);
m_hDC = GetDC((HWND)this->Handle.ToPointer());
if(m_hDC)
{
MySetPixelFormat(m_hDC);
ReSizeGLScene(iWidth, iHeight);
InitGL();
}
rtri = 0.0f;
rquad = 0.0f;
}
GLint MySetPixelFormat(HDC hdc)
{
static PIXELFORMATDESCRIPTOR pfd=
{
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
16,
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
16,
0,
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
GLint iPixelFormat;
// get the device context's best, available pixel format match
if((iPixelFormat = ChoosePixelFormat(hdc, &pfd)) == 0)
{
MessageBox::Show("ChoosePixelFormat Failed");
return 0;
}
// make that match the device context's current pixel format
if(SetPixelFormat(hdc, iPixelFormat, &pfd) == FALSE)
{
MessageBox::Show("SetPixelFormat Failed");
return 0;
}
if((m_hglrc = wglCreateContext(hdc)) == NULL)
{
MessageBox::Show("wglCreateContext Failed");
return 0;
}
if((wglMakeCurrent(hdc, m_hglrc)) == NULL)
{
MessageBox::Show("wglMakeCurrent Failed");
return 0;
}
return 1;
}
Have can I solve this problem?
Here, change in the constructor :
m_hDC = GetDC((HWND)this->Handle.ToPointer());
if(m_hDC)
{
wglMakeCurrent(m_hDC, NULL);
MySetPixelFormat(m_hDC);
ReSizeGLScene(iWidth, iHeight);
InitGL();
}
You must call wglMakeCurrent after m_hDC has been setup. I reply to the first article of the example. Here Creating an OpenGL view on a Windows Form
That solve my problem :)
you can check what glGetLastError value and mostly it is because you choose wrong or incompatible pixel format, you can try with other format, then your window class should be flagged CS_OWNDC and set DoubleBuffering to false.