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• Error compiling / linking e text editor on Linux

  - by jckdnk111

  The code compiles without too much complaint, but the last step fails with the error below. There is some discussion about it on the e forum, but still no answer. [LD] e ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0x0): multiple definition of `_pcre_OP_lengths' .objs.release/cx_pcre_tables.o:(.rodata+0x0): first defined here ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0x70): multiple definition of `_pcre_utf8_table1' .objs.release/cx_pcre_tables.o:(.rodata+0x70): first defined here ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0x88): multiple definition of `_pcre_utf8_table1_size' .objs.release/cx_pcre_tables.o:(.rodata+0x88): first defined here ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0x8c): multiple definition of `_pcre_utf8_table2' .objs.release/cx_pcre_tables.o:(.rodata+0x8c): first defined here ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0xa4): multiple definition of `_pcre_utf8_table3' .objs.release/cx_pcre_tables.o:(.rodata+0xa4): first defined here ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0xc0): multiple definition of `_pcre_utf8_table4' .objs.release/cx_pcre_tables.o:(.rodata+0xc0): first defined here ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0x180): multiple definition of `_pcre_utt_names' .objs.release/cx_pcre_tables.o:(.rodata+0x100): first defined here /usr/bin/ld: Warning: size of symbol `_pcre_utt_names' changed from 657 in .objs.release/cx_pcre_tables.o to 740 in ../external/out.release/lib/libpcre.a(pcre_tables.o) ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0x480): multiple definition of `_pcre_utt' .objs.release/cx_pcre_tables.o:(.rodata+0x3a0): first defined here /usr/bin/ld: Warning: size of symbol `_pcre_utt' changed from 630 in .objs.release/cx_pcre_tables.o to 696 in ../external/out.release/lib/libpcre.a(pcre_tables.o) ../external/out.release/lib/libpcre.a(pcre_tables.o):(.rodata+0x738): multiple definition of `_pcre_utt_size' .objs.release/cx_pcre_tables.o:(.rodata+0x618): first defined here .objs.release/cx_pcre_exec.o: In function `match(doc_byte_iter, unsigned char const*, doc_byte_iter, int, match_data*, unsigned long, eptrblock*, int, unsigned int)': cx_pcre_exec.cpp:(.text+0x1c2a): undefined reference to `_pcre_ord2utf8(int, unsigned char*)' .objs.release/eauibook.o: In function `eAuiNotebook::LoadPerspective(wxString const&)': eauibook.cpp:(.text+0x9ad): undefined reference to `wxTabFrame::SetTabCtrlHeight(int)' .objs.release/PreviewDlg.o: In function `global constructors keyed to _ZN10PreviewDlg13sm_eventTableE': PreviewDlg.cpp:(.text+0x11b2): undefined reference to `wxEVT_WEB_TITLECHANGE' PreviewDlg.cpp:(.text+0x11ee): undefined reference to `wxEVT_WEB_DOMCONTENTLOADED' .objs.release/PreviewDlg.o: In function `PreviewDlg::RefreshBrowser(PreviewDlg::cxUpdateMode)': PreviewDlg.cpp:(.text+0x2a47): undefined reference to `wxWebControl::OpenURI(wxString const&, unsigned int, wxWebPostData*, bool)' .objs.release/PreviewDlg.o: In function `PreviewDlg::OnWebDocumentComplete(wxWebEvent&)': PreviewDlg.cpp:(.text+0x3259): undefined reference to `wxWebControl::GetCurrentURI() const' .objs.release/PreviewDlg.o: In function `PreviewDlg::PreviewDlg(EditorFrame&)': PreviewDlg.cpp:(.text+0x4984): undefined reference to `wxWebControl::IsInitialized()' PreviewDlg.cpp:(.text+0x49c5): undefined reference to `wxWebControl::wxWebControl(wxWindow*, int, wxPoint const&, wxSize const&)' PreviewDlg.cpp:(.text+0x562f): undefined reference to `wxWebControl::InitEngine(wxString const&)' .objs.release/PreviewDlg.o: In function `PreviewDlg::PreviewDlg(EditorFrame&)': PreviewDlg.cpp:(.text+0x68e4): undefined reference to `wxWebControl::IsInitialized()' PreviewDlg.cpp:(.text+0x6925): undefined reference to `wxWebControl::wxWebControl(wxWindow*, int, wxPoint const&, wxSize const&)' PreviewDlg.cpp:(.text+0x758f): undefined reference to `wxWebControl::InitEngine(wxString const&)' .objs.release/PreviewDlg.o: In function `PreviewDlg::OnButtonForward(wxCommandEvent&)': PreviewDlg.cpp:(.text+0x132): undefined reference to `wxWebControl::GoForward()' .objs.release/PreviewDlg.o: In function `PreviewDlg::OnButtonBack(wxCommandEvent&)': PreviewDlg.cpp:(.text+0x182): undefined reference to `wxWebControl::GoBack()' ../ecore/libecore.so(cxInternal.o): In function `cxInternal::MoveOldSettings(eSettings&)': cxInternal.cpp:(.text+0x4d29): undefined reference to `eSettings::SetPageSettings(unsigned int, wxString const&, doc_id, int, int, wxString const&, std::vector<unsigned int, std::allocator<unsigned int> > const&, std::vector<cxBookmark, std::allocator<cxBookmark> > const&, eSettings::SubPage)' collect2: ld returned 1 exit status make: *** [e] Error 1 EDIT: Forgot the link http://github.com/etexteditor/e

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• simplifying templates

  - by Lodle

  I have a bunch of templates that are used for rpc and was wondering if there is a way to simplify them down as it repeats it self allot. I know varags for templates is coming in the next standard but can you do default values for templates? Also is there a way to handle void functions as normal functions? Atm i have to separate them and treat them as two different things every where. template <typename R> R functionCall(IPC::IPCClass* c, const char* name) { IPC::IPCParameterI* r = c->callFunction( name, false ); return handleReturn<R>(r); } template <typename R, typename A> R functionCall(IPC::IPCClass* cl, const char* name, A a) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a)); return handleReturn<R>(r); } template <typename R, typename A, typename B> R functionCall(IPC::IPCClass* cl, const char* name, A a, B b) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b) ); return handleReturn<R>(r); } template <typename R, typename A, typename B, typename C> R functionCall(IPC::IPCClass* cl, const char* name, A a, B b, C c) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c) ); return handleReturn<R>(r); } template <typename R, typename A, typename B, typename C, typename D> R functionCall(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d) ); return handleReturn<R>(r); } template <typename R, typename A, typename B, typename C, typename D, typename E> R functionCall(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d, E e) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d), IPC::getParameter(e) ); return handleReturn<R>(r); } template <typename R, typename A, typename B, typename C, typename D, typename E, typename F> R functionCall(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d, E e, F f) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d), IPC::getParameter(e), IPC::getParameter(f) ); return handleReturn<R>(r); } inline void functionCallV(IPC::IPCClass* cl, const char* name) { IPC::IPCParameterI* r = cl->callFunction( name, false ); handleReturnV(r); } template <typename A> void functionCallV(IPC::IPCClass* cl, const char* name, A a) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a)); handleReturnV(r); } template <typename A, typename B> void functionCallV(IPC::IPCClass* cl, const char* name, A a, B b) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b) ); handleReturnV(r); } template <typename A, typename B, typename C> void functionCallV(IPC::IPCClass* cl, const char* name, A a, B b, C c) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c) ); handleReturnV(r); } template <typename A, typename B, typename C, typename D> void functionCallV(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d) ); handleReturnV(r); } template <typename A, typename B, typename C, typename D, typename E> void functionCallV(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d, E e) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d), IPC::getParameter(e) ); handleReturnV(r); } template <typename A, typename B, typename C, typename D, typename E, typename F> void functionCallV(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d, E e, F f) { IPC::IPCParameterI* r = cl->callFunction( name, false, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d), IPC::getParameter(e), IPC::getParameter(f) ); handleReturnV(r); } inline void functionCallAsync(IPC::IPCClass* cl, const char* name) { IPC::IPCParameterI* r = cl->callFunction( name, true ); handleReturnV(r); } template <typename A> void functionCallAsync(IPC::IPCClass* cl, const char* name, A a) { IPC::IPCParameterI* r = cl->callFunction( name, true, IPC::getParameter(a)); handleReturnV(r); } template <typename A, typename B> void functionCallAsync(IPC::IPCClass* cl, const char* name, A a, B b) { IPC::IPCParameterI* r = cl->callFunction( name, true, IPC::getParameter(a), IPC::getParameter(b) ); handleReturnV(r); } template <typename A, typename B, typename C> void functionCallAsync(IPC::IPCClass* cl, const char* name, A a, B b, C c) { IPC::IPCParameterI* r = cl->callFunction( name, true, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c) ); handleReturnV(r); } template <typename A, typename B, typename C, typename D> void functionCallAsync(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d) { IPC::IPCParameterI* r = cl->callFunction( name, true, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d) ); handleReturnV(r); } template <typename A, typename B, typename C, typename D, typename E> void functionCallAsync(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d, E e) { IPC::IPCParameterI* r = cl->callFunction( name, true, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d), IPC::getParameter(e) ); handleReturnV(r); } template <typename A, typename B, typename C, typename D, typename E, typename F> void functionCallAsync(IPC::IPCClass* cl, const char* name, A a, B b, C c, D d, E e, F f) { IPC::IPCParameterI* r = cl->callFunction( name, true, IPC::getParameter(a), IPC::getParameter(b), IPC::getParameter(c), IPC::getParameter(d), IPC::getParameter(e), IPC::getParameter(f) ); handleReturnV(r); }

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• C++ addition overload ambiguity

  - by Nate

  I am coming up against a vexing conundrum in my code base. I can't quite tell why my code generates this error, but (for example) std::string does not. class String { public: String(const char*str); friend String operator+ ( const String& lval, const char *rval ); friend String operator+ ( const char *lval, const String& rval ); String operator+ ( const String& rval ); }; The implementation of these is easy enough to imagine on your own. My driver program contains the following: String result, lval("left side "), rval("of string"); char lv[] = "right side ", rv[] = "of string"; result = lv + rval; printf(result); result = (lval + rv); printf(result); Which generates the following error in gcc 4.1.2: driver.cpp:25: error: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second: String.h:22: note: candidate 1: String operator+(const String&, const char*) String.h:24: note: candidate 2: String String::operator+(const String&) So far so good, right? Sadly, my String(const char *str) constructor is so handy to have as an implicit constructor, that using the explicit keyword to solve this would just cause a different pile of problems. Moreover... std::string doesn't have to resort to this, and I can't figure out why. For example, in basic_string.h, they are declared as follows: template<typename _CharT, typename _Traits, typename _Alloc> basic_string<_CharT, _Traits, _Alloc> operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs) template<typename _CharT, typename _Traits, typename _Alloc> basic_string<_CharT,_Traits,_Alloc> operator+(const _CharT* __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs); and so on. The basic_string constructor is not declared explicit. How does this not cause the same error I'm getting, and how can I achieve the same behavior??

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• best alternative to in-definition initialization of static class members? (for SVN keywords)

  - by Jeff

  I'm storing expanded SVN keyword literals for .cpp files in 'static char const *const' class members and want to store the .h descriptions as similarly as possible. In short, I need to guarantee single instantiation of a static member (presumably in a .cpp file) to an auto-generated non-integer literal living in a potentially shared .h file. Unfortunately the language makes no attempt to resolve multiple instantiations resulting from assignments made outside class definitions and explicitly forbids non-integer inits inside class definitions. My best attempt (using static-wrapping internal classes) is not too dirty, but I'd really like to do better. Does anyone have a way to template the wrapper below or have an altogether superior approach? // Foo.h: class with .h/.cpp SVN info stored and logged statically class Foo { static Logger const verLog; struct hInfoWrap; public: static hInfoWrap const hInfo; static char const *const cInfo; }; // Would like to eliminate this per-class boilerplate. struct Foo::hInfoWrap { hInfoWrapper() : text("$Id$") { } char const *const text; }; ... // Foo.cpp: static inits called here Foo::hInfoWrap const Foo::hInfo; char const *const Foo::cInfo = "$Id$"; Logger const Foo::verLog(Foo::cInfo, Foo::hInfo.text); ... // Helper.h: output on construction, with no subsequent activity or stored fields class Logger { Logger(char const *info1, char const *info2) { cout << info0 << endl << info1 << endl; } }; Is there a way to get around the static linkage address issue for templating the hInfoWrap class on string literals? Extern char pointers assigned outside class definitions are linguistically valid but fail in essentially the same manner as direct member initializations. I get why the language shirks the whole resolution issue, but it'd be very convenient if an inverted extern member qualifier were provided, where the definition code was visible in class definitions to any caller but only actually invoked at the point of a single special declaration elsewhere. Anyway, I digress. What's the best solution for the language we've got, template or otherwise? Thanks!

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• Does LearnDevNow offers a useful subscription for .NET related training : with video and text reference material?

  - by user766926

  Does LearnDevNow offers a useful subscription for .NET video and text reference training material or to learn .NET? I could not find a review of www.learnnowonline.com/learndevnow I've been doing research about places that offer .NET / ASP.NET / C# / LINQ / SQL / JQuery video training that provide excellent material for developers. Kind of like a Lynda.com for back end development. However, I have not find one place that offers quality material that is easily accessible for the user, and that is priced competitive. This is what I'm looking for: Online Video tutorials with free future updates (videos that can be accessed on any device ie: android portable devices, mac / ipad, linux machines) Printable courseware (ie PDFs so that you can take notes, print if necessary, and read in a tablet in case you don;t have internet access) labs, and easy to access code Pre/Post Assessments/Exams for each training to keep track of your progress and what you have learned/skills. (Appdev used to offer this but it was way too expensive (thousands for each training ie 1k for each. I paid about five thousand at Appdev, and now I regret that purchase), and after a few years/months the training became obsolete - outdated) I looked at learnnowonline.com/learndevnow but it seems that their courseware / text reference material can only be accessed online, and don't know if their videos work in all mobile devices, and browsers (Safari, Chrome, IE, Opera, Firefox) Also, it seems Appdev not longer exist and now is called " AppDev is now LearnNowPlus : www.learnnowonline.com/appdev That site not longer offers prices. I tried to find reviews but could not find any. Does anyone know, or can share a review about some of these type of online training service providers? I would appreciate your feedback on this, and if you can share your past experiences with their service or similar/better services that would even be better. Thanks.

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• Why "object reference not set to an instance of an object" doesn't tell us which object?

  - by Saeed Neamati

  We're launching a system, and we sometimes get the famous exception NullReferenceException with the message Object reference not set to an instance of an object. However, in a method where we have almost 20 objects, having a log which says an object is null, is really of no use at all. It's like telling you, when you are the security agent of a seminar, that a man among 100 attendees is a terrorist. That's really of no use to you at all. You should get more information, if you want to detect which man is the threatening man. Likewise, if we want to remove the bug, we do need to know which object is null. Now, something has obsessed my mind for several months, and that is: Why .NET doesn't give us the name, or at least the type of the object reference, which is null?. Can't it understand the type from reflection or any other source? Also, what are the best practices to understand which object is null? Should we always test nullability of objects in these contexts manually and log the result? Is there a better way?

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• Do cross reference database tables have a place in domain driven design?

  - by Mike Cellini

  First some background. Let's say we have a system where a customer is placing an order in a web interface. The items that customer is ordering can priced in various ways. Sometimes including the cost of delivery and sometimes not at all. That pricing effectively depends on a variety of factors including the vendor's own pricing model, that vendor's individual contracts with customers as well as that vendor's contracts with its own suppliers. Let's assume that once a customer places an order for a particular item and chooses a contract if any, the method of delivery can be determined by variables on those contracts. Those delivery methods also live in their own table in the database and have various properties consumed downstream. It makes sense that a cross reference or lookup table would store that information. That table would be loaded into the domain and could then be used to apply the appropriate delivery method while processing the order. Does this make sense in the context of domain driven design? Or is my thinking too relational? Is this logic that should be built into it's own class/method (I mean beyond apply the cross reference table data)?

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• Performance Testing &ndash; Quick Reference Guide &ndash; Released up on CodePlex

  - by Shawn Cicoria

  Why performance test at all right?  Well, physics still plays a role in what we do.  Why not take a better look at your application – need help, well, the Rangers team just released the following to help: The following has both VS2008 & VS2010 content: http://vstt2008qrg.codeplex.com/ Visual Studio Performance Testing Quick Reference Guide (Version 2.0) The final released copy is here and ready for full time use. Please enjoy and post feedback on the discussion board. This document is a collection of items from public blog sites, Microsoft® internal discussion aliases (sanitized) and experiences from various Test Consultants in the Microsoft Services Labs. The idea is to provide quick reference points around various aspects of Microsoft Visual Studio® performance testing features that may not be covered in core documentation, or may not be easily understood. The different types of information cover: How does this feature work under the covers? How can I implement a workaround for this missing feature? This is a known bug and here is a fix or workaround. How do I troubleshoot issues I am having

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• What are the implications of using static const instead of #define?

  - by Simon Elliott

  gcc complains about this: #include <stdio.h> static const int YY = 1024; extern int main(int argc, char*argv[]) { static char x[YY]; } $ gcc -c test1.c test1.c: In function main': test1.c:5: error: storage size of x' isn't constant test1.c:5: error: size of variable `x' is too large Remove the “static” from the definition of x and all is well. I'm not exactly clear what's going on here: surely YY is constant? I had always assumed that the "static const" approach was preferable to "#define". Is there any way of using "static const" in this situation?

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• Vertex buffer acting strange? [on hold]

  - by Ryan Capote

  I'm having a strange problem, and I don't know what could be causing it. My current code is identical to how I've done this before. I'm trying to render a rectangle using VBO and orthographic projection.   My results:     What I expect: 3x3 rectangle in the top left corner   #include <stdio.h> #include <GL\glew.h> #include <GLFW\glfw3.h> #include "lodepng.h"   static const int FALSE = 0; static const int TRUE = 1;   static const char* VERT_SHADER =     "#version 330\n"       "layout(location=0) in vec4 VertexPosition; "     "layout(location=1) in vec2 UV;"     "uniform mat4 uProjectionMatrix;"     /*"out vec2 TexCoords;"*/       "void main(void) {"     "    gl_Position = uProjectionMatrix*VertexPosition;"     /*"    TexCoords = UV;"*/     "}";   static const char* FRAG_SHADER =     "#version 330\n"       /*"uniform sampler2D uDiffuseTexture;"     "uniform vec4 uColor;"     "in vec2 TexCoords;"*/     "out vec4 FragColor;"       "void main(void) {"    /* "    vec4 texel = texture2D(uDiffuseTexture, TexCoords);"     "    if(texel.a <= 0) {"     "         discard;"     "    }"     "    FragColor = texel;"*/     "    FragColor = vec4(1.f);"     "}";   static int g_running; static GLFWwindow *gl_window; static float gl_projectionMatrix[16];   /*     Structures */ typedef struct _Vertex {     float x, y, z, w;     float u, v; } Vertex;   typedef struct _Position {     float x, y; } Position;   typedef struct _Bitmap {     unsigned char *pixels;     unsigned int width, height; } Bitmap;   typedef struct _Texture {     GLuint id;     unsigned int width, height; } Texture;   typedef struct _VertexBuffer {     GLuint bufferObj, vertexArray; } VertexBuffer;   typedef struct _ShaderProgram {     GLuint vertexShader, fragmentShader, program; } ShaderProgram;   /*   http://en.wikipedia.org/wiki/Orthographic_projection */ void createOrthoProjection(float *projection, float width, float height, float far, float near)  {       const float left = 0;     const float right = width;     const float top = 0;     const float bottom = height;          projection[0] = 2.f / (right - left);     projection[1] = 0.f;     projection[2] = 0.f;     projection[3] = -(right+left) / (right-left);     projection[4] = 0.f;     projection[5] = 2.f / (top - bottom);     projection[6] = 0.f;     projection[7] = -(top + bottom) / (top - bottom);     projection[8] = 0.f;     projection[9] = 0.f;     projection[10] = -2.f / (far-near);     projection[11] = (far+near)/(far-near);     projection[12] = 0.f;     projection[13] = 0.f;     projection[14] = 0.f;     projection[15] = 1.f; }   /*     Textures */ void loadBitmap(const char *filename, Bitmap *bitmap, int *success) {     int error = lodepng_decode32_file(&bitmap->pixels, &bitmap->width, &bitmap->height, filename);       if (error != 0) {         printf("Failed to load bitmap. ");         printf(lodepng_error_text(error));         success = FALSE;         return;     } }   void destroyBitmap(Bitmap *bitmap) {     free(bitmap->pixels); }   void createTexture(Texture *texture, const Bitmap *bitmap) {     texture->id = 0;     glGenTextures(1, &texture->id);     glBindTexture(GL_TEXTURE_2D, texture);       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap->width, bitmap->height, 0,              GL_RGBA, GL_UNSIGNED_BYTE, bitmap->pixels);       glBindTexture(GL_TEXTURE_2D, 0); }   void destroyTexture(Texture *texture) {     glDeleteTextures(1, &texture->id);     texture->id = 0; }   /*     Vertex Buffer */ void createVertexBuffer(VertexBuffer *vertexBuffer, Vertex *vertices) {     glGenBuffers(1, &vertexBuffer->bufferObj);     glGenVertexArrays(1, &vertexBuffer->vertexArray);     glBindVertexArray(vertexBuffer->vertexArray);       glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer->bufferObj);     glBufferData(GL_ARRAY_BUFFER, sizeof(Vertex) * 6, (const GLvoid*)vertices, GL_STATIC_DRAW);       const unsigned int uvOffset = sizeof(float) * 4;       glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0);     glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*)uvOffset);       glEnableVertexAttribArray(0);     glEnableVertexAttribArray(1);       glBindBuffer(GL_ARRAY_BUFFER, 0);     glBindVertexArray(0); }   void destroyVertexBuffer(VertexBuffer *vertexBuffer) {     glDeleteBuffers(1, &vertexBuffer->bufferObj);     glDeleteVertexArrays(1, &vertexBuffer->vertexArray); }   void bindVertexBuffer(VertexBuffer *vertexBuffer) {     glBindVertexArray(vertexBuffer->vertexArray);     glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer->bufferObj); }   void drawVertexBufferMode(GLenum mode) {     glDrawArrays(mode, 0, 6); }   void drawVertexBuffer() {     drawVertexBufferMode(GL_TRIANGLES); }   void unbindVertexBuffer() {     glBindVertexArray(0);     glBindBuffer(GL_ARRAY_BUFFER, 0); }   /*     Shaders */ void compileShader(ShaderProgram *shaderProgram, const char *vertexSrc, const char *fragSrc) {     GLenum err;     shaderProgram->vertexShader = glCreateShader(GL_VERTEX_SHADER);     shaderProgram->fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);       if (shaderProgram->vertexShader == 0) {         printf("Failed to create vertex shader.");         return;     }       if (shaderProgram->fragmentShader == 0) {         printf("Failed to create fragment shader.");         return;     }       glShaderSource(shaderProgram->vertexShader, 1, &vertexSrc, NULL);     glCompileShader(shaderProgram->vertexShader);     glGetShaderiv(shaderProgram->vertexShader, GL_COMPILE_STATUS, &err);       if (err != GL_TRUE) {         printf("Failed to compile vertex shader.");         return;     }       glShaderSource(shaderProgram->fragmentShader, 1, &fragSrc, NULL);     glCompileShader(shaderProgram->fragmentShader);     glGetShaderiv(shaderProgram->fragmentShader, GL_COMPILE_STATUS, &err);       if (err != GL_TRUE) {         printf("Failed to compile fragment shader.");         return;     }       shaderProgram->program = glCreateProgram();     glAttachShader(shaderProgram->program, shaderProgram->vertexShader);     glAttachShader(shaderProgram->program, shaderProgram->fragmentShader);     glLinkProgram(shaderProgram->program);          glGetProgramiv(shaderProgram->program, GL_LINK_STATUS, &err);       if (err != GL_TRUE) {         printf("Failed to link shader.");         return;     } }   void destroyShader(ShaderProgram *shaderProgram) {     glDetachShader(shaderProgram->program, shaderProgram->vertexShader);     glDetachShader(shaderProgram->program, shaderProgram->fragmentShader);       glDeleteShader(shaderProgram->vertexShader);     glDeleteShader(shaderProgram->fragmentShader);       glDeleteProgram(shaderProgram->program); }   GLuint getUniformLocation(const char *name, ShaderProgram *program) {     GLuint result = 0;     result = glGetUniformLocation(program->program, name);       return result; }   void setUniformMatrix(float *matrix, const char *name, ShaderProgram *program) {     GLuint loc = getUniformLocation(name, program);       if (loc == -1) {         printf("Failed to get uniform location in setUniformMatrix.\n");         return;     }       glUniformMatrix4fv(loc, 1, GL_FALSE, matrix); }   /*     General functions */ static int isRunning() {     return g_running && !glfwWindowShouldClose(gl_window); }   static void initializeGLFW(GLFWwindow **window, int width, int height, int *success) {     if (!glfwInit()) {         printf("Failed it inialize GLFW.");         *success = FALSE;        return;     }          glfwWindowHint(GLFW_RESIZABLE, 0);     *window = glfwCreateWindow(width, height, "Alignments", NULL, NULL);          if (!*window) {         printf("Failed to create window.");         glfwTerminate();         *success = FALSE;         return;     }          glfwMakeContextCurrent(*window);       GLenum glewErr = glewInit();     if (glewErr != GLEW_OK) {         printf("Failed to initialize GLEW.");         printf(glewGetErrorString(glewErr));         *success = FALSE;         return;     }       glClearColor(0.f, 0.f, 0.f, 1.f);     glViewport(0, 0, width, height);     *success = TRUE; }   int main(int argc, char **argv) {          int err = FALSE;     initializeGLFW(&gl_window, 480, 320, &err);     glDisable(GL_DEPTH_TEST);     if (err == FALSE) {         return 1;     }          createOrthoProjection(gl_projectionMatrix, 480.f, 320.f, 0.f, 1.f);          g_running = TRUE;          ShaderProgram shader;     compileShader(&shader, VERT_SHADER, FRAG_SHADER);     glUseProgram(shader.program);     setUniformMatrix(&gl_projectionMatrix, "uProjectionMatrix", &shader);       Vertex rectangle[6];     VertexBuffer vbo;     rectangle[0] = (Vertex){0.f, 0.f, 0.f, 1.f, 0.f, 0.f}; // Top left     rectangle[1] = (Vertex){3.f, 0.f, 0.f, 1.f, 1.f, 0.f}; // Top right     rectangle[2] = (Vertex){0.f, 3.f, 0.f, 1.f, 0.f, 1.f}; // Bottom left     rectangle[3] = (Vertex){3.f, 0.f, 0.f, 1.f, 1.f, 0.f}; // Top left     rectangle[4] = (Vertex){0.f, 3.f, 0.f, 1.f, 0.f, 1.f}; // Bottom left     rectangle[5] = (Vertex){3.f, 3.f, 0.f, 1.f, 1.f, 1.f}; // Bottom right       createVertexBuffer(&vbo, &rectangle);            bindVertexBuffer(&vbo);          while (isRunning()) {         glClear(GL_COLOR_BUFFER_BIT);         glfwPollEvents();                    drawVertexBuffer();                    glfwSwapBuffers(gl_window);     }          unbindVertexBuffer(&vbo);       glUseProgram(0);     destroyShader(&shader);     destroyVertexBuffer(&vbo);     glfwTerminate();     return 0; }

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• Object array updates one instance repeatedly [on hold]

  - by MGN001

  I'm making a 2D shooter, and the player object holds an array of bullets that represent how many shots the player can have on screen at once. At least, this is what I'm trying for. What's happening is that each time any of the objects in the array is called, it seems to update a single object in memory. So, if I fire and then fire again, the object "starts over" from where I shot from and moves twice as fast. I've spent weeks trying to fix this and I've managed nothing. Hopefully another pair of eyes will see something I've missed. Player.cpp #include "Player.h" const int startLives = 3; const int maxHealth = 2; const float speed = 1; const int maxVelocity = 500; const int topBound = WINDOW_HEIGHT / 5 * 3; const int slowRate = 500; const int accRate = 1000; const int maxBullets = 5; const float spriteWidth = 99; const float spriteHeight = 75; const Vector2f startPosition = { (WINDOW_WIDTH / 2) - (spriteWidth / 2), (WINDOW_HEIGHT / 4 * 3) - (spriteHeight / 2) }; Bullet bullets[maxBullets]; Bullet * bulletPointers[maxBullets]; SDL_Texture * playerHealthy; SDL_Texture * playerDamaged; SDL_Texture * currentSprite; SDL_Rect * rect; Vector2f position; Vector2f velocity; int Health; int Lives; Player::Player() { rect = new SDL_Rect(); } Player::~Player() { SDL_DestroyTexture(playerHealthy); SDL_DestroyTexture(playerDamaged); SDL_DestroyTexture(currentSprite); rect = NULL; } void Player::Initialize(SDL_Renderer * renderer) { SDL_Surface * temp; temp = IMG_Load(".\\Sprites\\player.png"); if (temp == NULL) { printf("Initialization Error: %s\n", IMG_GetError()); exit(PLAYER_INITIALIZATION_ERROR); } playerHealthy = SDL_CreateTextureFromSurface(renderer, temp); temp = IMG_Load(".\\Sprites\\playerDamaged.png"); if (temp == NULL) { printf("Initialization Error: %s\n", IMG_GetError()); exit(PLAYER_INITIALIZATION_ERROR); } playerDamaged = SDL_CreateTextureFromSurface(renderer, temp); temp = IMG_Load(".\\Sprites\\laserGreen.png"); if (temp == NULL) { printf("Initialization Error: %s\n", IMG_GetError()); exit(PLAYER_INITIALIZATION_ERROR); } SDL_Texture * bullet = SDL_CreateTextureFromSurface(renderer, temp); temp = IMG_Load(".\\Sprites\\laserGreenShot.png"); if (temp == NULL) { printf("Initialization Error: %s\n", IMG_GetError()); exit(PLAYER_INITIALIZATION_ERROR); } SDL_Texture * explosion = SDL_CreateTextureFromSurface(renderer, temp); for (int i = 0; i < maxBullets; i++) { bullets[i].Initialize(renderer, bullet, explosion); bulletPointers[i] = NULL; } temp = NULL; rect->h = spriteHeight; rect->w = spriteWidth; Reset(); } void Player::Update(Input input, float deltaTime) { if (abs(velocity.x) < slowRate * deltaTime) { velocity.x = 0; } else if (velocity.x > 0) { velocity.x -= slowRate * deltaTime; } else if (velocity.x < 0) { velocity.x += slowRate * deltaTime; } if (abs(velocity.y) < slowRate * deltaTime) { velocity.y = 0; } if (velocity.y > 0) { velocity.y -= slowRate * deltaTime; } else if (velocity.y < 0) { velocity.y += slowRate * deltaTime; } if (Health <= 0) { --Lives; Spawn(); } velocity.x += UnitVector(input.InputNew.movement).x * accRate * deltaTime; velocity.y += UnitVector(input.InputNew.movement).y * accRate * deltaTime; if (Magnitude(velocity) > maxVelocity) { velocity.x = UnitVector(velocity).x * maxVelocity; velocity.y = UnitVector(velocity).y * maxVelocity; } position.x += velocity.x * deltaTime * speed; position.y += velocity.y * deltaTime * speed; if (input.InputNew.JumpLeft && !input.InputOld.JumpLeft) { position.x -= spriteWidth; } if (input.InputNew.JumpRight && !input.InputOld.JumpRight) { position.x += spriteWidth; } Boundaries(); rect->x = position.x; rect->y = position.y; if (input.InputNew.Fire && !input.InputOld.Fire) { Fire(); } for (int i = 0; i < maxBullets; ++i) { if (bulletPointers[i] != NULL) { bullets[i].Update(deltaTime); if (bullets[i].getPosition().y < -33) { bulletPointers[i] = NULL; } } } } void Player::Draw(SDL_Renderer * renderer) { for (int i = 0; i < maxBullets; ++i) { if (bulletPointers[i] != NULL) { bullets[i].Draw(renderer); } } SDL_RenderCopy(renderer, currentSprite, NULL, rect); } void Player::Spawn() { position = startPosition; Health = maxHealth; currentSprite = playerHealthy; rect->x = position.x; rect->y = position.y; } void Player::Boundaries() { if (position.x < 0) { position.x = 0; velocity.x *= -1; } else if (position.x > WINDOW_WIDTH - spriteWidth) { position.x = WINDOW_WIDTH - spriteWidth; velocity.x *= -1; } if (position.y < topBound) { position.y = topBound; velocity.y *= -1; } else if (position.y > WINDOW_HEIGHT - spriteHeight) { position.y = WINDOW_HEIGHT - spriteHeight; velocity.y *= -1; } } int Player::getLives() { return Lives; } void Player::Reset() { Lives = startLives; Spawn(); } void Player::Fire() { for (int i = 0; i < maxBullets; ++i) { if (bulletPointers[i] == NULL) { bulletPointers[i] = &bullets[i]; bullets[i].Fire(position,velocity.x/2); break; } } } Bullet.cpp #include "Bullet.h" const int speed = 500; Vector2f bulletVelocity; float ExplosionMax = 0.5f; float ExplosionTimer; const Vector2f fireOffset = { 45.5f, 10.0f }; const Vector2f explosionOffset = { 23.5f, -27.0f }; const Vector2i bulletSize = { 9, 33 }; const Vector2i explosionSize = { 56, 54 }; Vector2f bulletPosition; SDL_Texture * bulletSprite; SDL_Texture * explosionSprite; SDL_Texture * bulletCurrentSprite; SDL_Rect * bulletRect; Bullet::Bullet() { } Bullet::~Bullet() { } void Bullet::Initialize(SDL_Renderer * renderer, SDL_Texture * bullet, SDL_Texture * explosion) { bulletSprite = bullet; explosionSprite = explosion; bulletRect = new SDL_Rect(); } void Bullet::Update(float deltaTime) { bulletPosition.y -= bulletVelocity.y * deltaTime; bulletPosition.x += bulletVelocity.x * deltaTime; bulletRect->x = static_cast<int>(bulletPosition.x); bulletRect->y = static_cast<int>(bulletPosition.y); } void Bullet::Draw(SDL_Renderer * renderer) { SDL_RenderCopy(renderer, bulletCurrentSprite, NULL, bulletRect); } void Bullet::Fire(Vector2f pos, float xSpeed) { bulletPosition.x = pos.x + fireOffset.x; bulletPosition.y = pos.y + fireOffset.y; bulletVelocity.x = xSpeed; bulletVelocity.y = speed; bulletCurrentSprite = bulletSprite; bulletRect->h = bulletSize.y; bulletRect->w = bulletSize.x; bulletRect->x = static_cast<int>(bulletPosition.x); bulletRect->y = static_cast<int>(bulletPosition.y); } Vector2f Bullet::getPosition() { return bulletPosition; } void Bullet::Hit() { bulletCurrentSprite = explosionSprite; bulletVelocity = { 0.0f, 0.0f }; ExplosionTimer = ExplosionMax; bulletPosition.x += explosionOffset.x; bulletPosition.y += explosionOffset.y; bulletRect->w = explosionSize.x; bulletRect->h = explosionSize.y; }

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• Espeak SAPI/dll usage on Windows ?

  - by Quandary

  Question: I am trying to use the espeak text-to-speech engine. So for I got it working wounderfully on linux (code below). Now I wanted to port this basic program to windows, too, but it's nearly impossible... Part of the problem is that the windows dll only allows for AUDIO_OUTPUT_SYNCHRONOUS, which means it requires a callback, but I can't figure out how to play the audio from the callback... First it crashed, then I realized, I need a callback function, now I get the data in the callback function, but I don't know how to play it... as it is neither a wav file nor plays automatically as on Linux. The sourceforge site is rather useless, because it basically says use the SAPI version, but then there is no example on how to use the sapi espeak dll... Anyway, here's my code, can anybody help? #ifdef __cplusplus #include <cstdio> #include <cstdlib> #include <cstring> else #include <stdio.h> #include <stdlib.h> #include <string.h> endif include include //#include "speak_lib.h" include "espeak/speak_lib.h" // libespeak-dev: /usr/include/espeak/speak_lib.h // apt-get install libespeak-dev // apt-get install libportaudio-dev // g++ -o mine mine.cpp -lespeak // g++ -o mine mine.cpp -I/usr/include/espeak/ -lespeak // gcc -o mine mine.cpp -I/usr/include/espeak/ -lespeak char voicename[40]; int samplerate; int quiet = 0; static char genders[4] = {' ','M','F',' '}; //const char *data_path = "/usr/share/"; // /usr/share/espeak-data/ const char *data_path = NULL; // use default path for espeak-data int strrcmp(const char *s, const char *sub) { int slen = strlen(s); int sublen = strlen(sub); return memcmp(s + slen - sublen, sub, sublen); } char * strrcpy(char *dest, const char *source) { // Pre assertions assert(dest != NULL); assert(source != NULL); assert(dest != source); // tk: parentheses while((*dest++ = *source++)) ; return(--dest); } const char* GetLanguageVoiceName(const char* pszShortSign) { #define LANGUAGE_LENGTH 30 static char szReturnValue[LANGUAGE_LENGTH] ; memset(szReturnValue, 0, LANGUAGE_LENGTH); for (int i = 0; pszShortSign[i] != '\0'; ++i) szReturnValue[i] = (char) tolower(pszShortSign[i]); const espeak_VOICE **voices; espeak_VOICE voice_select; voices = espeak_ListVoices(NULL); const espeak_VOICE *v; for(int ix=0; (v = voices[ix]) != NULL; ix++) { if( !strrcmp( v->languages, szReturnValue) ) { strcpy(szReturnValue, v->name); return szReturnValue; } } // End for strcpy(szReturnValue, "default"); return szReturnValue; } // End function getvoicename void ListVoices() { const espeak_VOICE **voices; espeak_VOICE voice_select; voices = espeak_ListVoices(NULL); const espeak_VOICE *v; for(int ix=0; (v = voices[ix]) != NULL; ix++) { printf("Shortsign: %s\n", v->languages); printf("age: %d\n", v->age); printf("gender: %c\n", genders[v->gender]); printf("name: %s\n", v->name); printf("\n\n"); } // End for } // End function getvoicename int main() { printf("Hello World!\n"); const char* szVersionInfo = espeak_Info(NULL); printf("Espeak version: %s\n", szVersionInfo); samplerate = espeak_Initialize(AUDIO_OUTPUT_PLAYBACK,0,data_path,0); strcpy(voicename, "default"); // espeak --voices strcpy(voicename, "german"); strcpy(voicename, GetLanguageVoiceName("DE")); if(espeak_SetVoiceByName(voicename) != EE_OK) { printf("Espeak setvoice error...\n"); } static char word[200] = "Hello World" ; strcpy(word, "TV-fäns aufgepasst, es ist 20 Uhr 15. Zeit für Rambo 3"); strcpy(word, "Unnamed Player wurde zum Opfer von GSG9"); int speed = 220; int volume = 500; // volume in range 0-100 0=silence int pitch = 50; // base pitch, range 0-100. 50=normal // espeak.cpp 625 espeak_SetParameter(espeakRATE, speed, 0); espeak_SetParameter(espeakVOLUME,volume,0); espeak_SetParameter(espeakPITCH,pitch,0); // espeakRANGE: pitch range, range 0-100. 0-monotone, 50=normal // espeakPUNCTUATION: which punctuation characters to announce: // value in espeak_PUNCT_TYPE (none, all, some), espeak_VOICE *voice_spec = espeak_GetCurrentVoice(); voice_spec->gender=2; // 0=none 1=male, 2=female, //voice_spec->age = age; espeak_SetVoiceByProperties(voice_spec); espeak_Synth( (char*) word, strlen(word)+1, 0, POS_CHARACTER, 0, espeakCHARS_AUTO, NULL, NULL); espeak_Synchronize(); strcpy(voicename, GetLanguageVoiceName("EN")); espeak_SetVoiceByName(voicename); strcpy(word, "Geany was fragged by GSG9 Googlebot"); strcpy(word, "Googlebot"); espeak_Synth( (char*) word, strlen(word)+1, 0, POS_CHARACTER, 0, espeakCHARS_AUTO, NULL, NULL); espeak_Synchronize(); espeak_Terminate(); printf("Espeak terminated\n"); return EXIT_SUCCESS; } /* if(espeak_SetVoiceByName(voicename) != EE_OK) { memset(&voice_select,0,sizeof(voice_select)); voice_select.languages = voicename; if(espeak_SetVoiceByProperties(&voice_select) != EE_OK) { fprintf(stderr,"%svoice '%s'\n",err_load,voicename); exit(2); } } */ The above code is for Linux. The below code is about as far as I got on Vista x64 (32 bit emu): #ifdef __cplusplus #include <cstdio> #include <cstdlib> #include <cstring> else #include <stdio.h> #include <stdlib.h> #include <string.h> endif include include include "speak_lib.h" //#include "espeak/speak_lib.h" // libespeak-dev: /usr/include/espeak/speak_lib.h // apt-get install libespeak-dev // apt-get install libportaudio-dev // g++ -o mine mine.cpp -lespeak // g++ -o mine mine.cpp -I/usr/include/espeak/ -lespeak // gcc -o mine mine.cpp -I/usr/include/espeak/ -lespeak char voicename[40]; int iSampleRate; int quiet = 0; static char genders[4] = {' ','M','F',' '}; //const char *data_path = "/usr/share/"; // /usr/share/espeak-data/ //const char *data_path = NULL; // use default path for espeak-data const char *data_path = "C:\Users\Username\Desktop\espeak-1.43-source\espeak-1.43-source\"; int strrcmp(const char *s, const char *sub) { int slen = strlen(s); int sublen = strlen(sub); return memcmp(s + slen - sublen, sub, sublen); } char * strrcpy(char *dest, const char *source) { // Pre assertions assert(dest != NULL); assert(source != NULL); assert(dest != source); // tk: parentheses while((*dest++ = *source++)) ; return(--dest); } const char* GetLanguageVoiceName(const char* pszShortSign) { #define LANGUAGE_LENGTH 30 static char szReturnValue[LANGUAGE_LENGTH] ; memset(szReturnValue, 0, LANGUAGE_LENGTH); for (int i = 0; pszShortSign[i] != '\0'; ++i) szReturnValue[i] = (char) tolower(pszShortSign[i]); const espeak_VOICE **voices; espeak_VOICE voice_select; voices = espeak_ListVoices(NULL); const espeak_VOICE *v; for(int ix=0; (v = voices[ix]) != NULL; ix++) { if( !strrcmp( v->languages, szReturnValue) ) { strcpy(szReturnValue, v->name); return szReturnValue; } } // End for strcpy(szReturnValue, "default"); return szReturnValue; } // End function getvoicename void ListVoices() { const espeak_VOICE **voices; espeak_VOICE voice_select; voices = espeak_ListVoices(NULL); const espeak_VOICE *v; for(int ix=0; (v = voices[ix]) != NULL; ix++) { printf("Shortsign: %s\n", v->languages); printf("age: %d\n", v->age); printf("gender: %c\n", genders[v->gender]); printf("name: %s\n", v->name); printf("\n\n"); } // End for } // End function getvoicename /* Callback from espeak. Directly speaks using AudioTrack. */ define LOGI(x) printf("%s\n", x) static int AndroidEspeakDirectSpeechCallback(short *wav, int numsamples, espeak_EVENT *events) { char buf[100]; sprintf(buf, "AndroidEspeakDirectSpeechCallback: %d samples", numsamples); LOGI(buf); if (wav == NULL) { LOGI("Null: speech has completed"); } if (numsamples > 0) { //audout->write(wav, sizeof(short) * numsamples); sprintf(buf, "AudioTrack wrote: %d bytes", sizeof(short) * numsamples); LOGI(buf); } return 0; // continue synthesis (1 is to abort) } static int AndroidEspeakSynthToFileCallback(short *wav, int numsamples,espeak_EVENT *events) { char buf[100]; sprintf(buf, "AndroidEspeakSynthToFileCallback: %d samples", numsamples); LOGI(buf); if (wav == NULL) { LOGI("Null: speech has completed"); } // The user data should contain the file pointer of the file to write to //void* user_data = events->user_data; FILE* user_data = fopen ( "myfile1.wav" , "ab" ); FILE* fp = static_cast<FILE *>(user_data); // Write all of the samples fwrite(wav, sizeof(short), numsamples, fp); return 0; // continue synthesis (1 is to abort) } int main() { printf("Hello World!\n"); const char* szVersionInfo = espeak_Info(NULL); printf("Espeak version: %s\n", szVersionInfo); iSampleRate = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, 4096, data_path, 0); if (iSampleRate <= 0) { printf("Unable to initialize espeak"); return EXIT_FAILURE; } //samplerate = espeak_Initialize(AUDIO_OUTPUT_PLAYBACK,0,data_path,0); //ListVoices(); strcpy(voicename, "default"); // espeak --voices //strcpy(voicename, "german"); //strcpy(voicename, GetLanguageVoiceName("DE")); if(espeak_SetVoiceByName(voicename) != EE_OK) { printf("Espeak setvoice error...\n"); } static char word[200] = "Hello World" ; strcpy(word, "TV-fäns aufgepasst, es ist 20 Uhr 15. Zeit für Rambo 3"); strcpy(word, "Unnamed Player wurde zum Opfer von GSG9"); int speed = 220; int volume = 500; // volume in range 0-100 0=silence int pitch = 50; // base pitch, range 0-100. 50=normal // espeak.cpp 625 espeak_SetParameter(espeakRATE, speed, 0); espeak_SetParameter(espeakVOLUME,volume,0); espeak_SetParameter(espeakPITCH,pitch,0); // espeakRANGE: pitch range, range 0-100. 0-monotone, 50=normal // espeakPUNCTUATION: which punctuation characters to announce: // value in espeak_PUNCT_TYPE (none, all, some), //espeak_VOICE *voice_spec = espeak_GetCurrentVoice(); //voice_spec->gender=2; // 0=none 1=male, 2=female, //voice_spec->age = age; //espeak_SetVoiceByProperties(voice_spec); //espeak_SetSynthCallback(AndroidEspeakDirectSpeechCallback); espeak_SetSynthCallback(AndroidEspeakSynthToFileCallback); unsigned int unique_identifier; espeak_ERROR err = espeak_Synth( (char*) word, strlen(word)+1, 0, POS_CHARACTER, 0, espeakCHARS_AUTO, &unique_identifier, NULL); err = espeak_Synchronize(); /* strcpy(voicename, GetLanguageVoiceName("EN")); espeak_SetVoiceByName(voicename); strcpy(word, "Geany was fragged by GSG9 Googlebot"); strcpy(word, "Googlebot"); espeak_Synth( (char*) word, strlen(word)+1, 0, POS_CHARACTER, 0, espeakCHARS_AUTO, NULL, NULL); espeak_Synchronize(); */ // espeak_Cancel(); espeak_Terminate(); printf("Espeak terminated\n"); system("pause"); return EXIT_SUCCESS; }

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• Magento - Add CMS Block to One Page

  - by a1anm

  I have this code in a xml layout file: <reference name="left"> <block type="blog/blog" name="left.blog.menu" before="-"> <action method="setTemplate" ifconfig="blog/menu/left"> <template>aw_blog/menu.phtml</template> </action> <block type="blog/tags" name="blog_tags" /> </block> </reference> I want to add a cms static block to the blog pages using this code: <block type="cms/block" name="brand_list"> <action method="setBlockId"><block_id>brand_list</block_id></action> </block> If I add it in directly after this line: <reference name="left"> It works but it is then displayed on every page. How can I get it to show only on the blog pages? Thanks. Edit: Here is the entire xml file: <layout version="0.1.0"> <default> <reference name="footer_links"> <block type="blog/blog" name="add.blog.footer"> <block type="blog/tags" name="blog_tags" /> <action method="addFooterLink" ifconfig="blog/menu/footer"></action> </block> </reference> <reference name="right"> <block type="blog/blog" name="right.blog.menu" before="-"> <action method="setTemplate" ifconfig="blog/menu/right" ifvalue="1"> <template>aw_blog/menu.phtml</template> </action> <block type="blog/tags" name="blog_tags" /> </block> </reference> <reference name="left"> <block type="blog/blog" name="left.blog.menu" before="-"> <action method="setTemplate" ifconfig="blog/menu/left"> <template>aw_blog/menu.phtml</template> </action> <block type="blog/tags" name="blog_tags" /> </block> </reference> <reference name="top.links"> <block type="blog/blog" name="add.blog.link"> <action method="addTopLink" ifconfig="blog/menu/top"></action> <block type="blog/tags" name="blog_tags" /> </block> </reference> <reference name="head"> <action method="addItem"><type>skin_css</type><name>aw_blog/css/style.css</name></action> </reference> </default> <blog_index_index> <reference name="content"> <block type="blog/blog" name="blog" template="aw_blog/blog.phtml"/> </reference> </blog_index_index> <blog_index_list> <reference name="content"> <block type="blog/blog" name="blog" template="aw_blog/blog.phtml"/> </reference> </blog_index_list> <blog_post_view> <reference name="content"> <block type="blog/post" name="post" template="aw_blog/post.phtml"> <block type="socialbookmarking/bookmarks" name="bookmarks" template="bookmarks/bookmarks.phtml"/> </block> </reference> </blog_post_view> <blog_cat_view> <reference name="content"> <block type="blog/cat" name="cat" template="aw_blog/cat.phtml" /> </reference> </blog_cat_view> <blog_rss_index> <block type="blog/rss" output="toHtml" name="rss.blog.new"/> </blog_rss_index> </layout>

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• How to keep g++ from taking header file from /usr/include?

  - by WilliamKF

  I am building using zlib.h which I have a local copy to v1.2.5, but in /usr/include/zlib.h there is v1.2.1.2. If I omit adding -I/my/path/to/zlib to my make I get error from using old version which doesn't have Z_FIXED: g++ -g -Werror -Wredundant-decls -D_FILE_OFFSET_BITS=64 -c -o ARCH.linux_26_i86/debug/sysParam.o sysParam.cpp sysParam.cpp: In member function `std::string CSysParamAccess::getCompressionStrategyName() const': sysParam.cpp:1816: error: `Z_FIXED' was not declared in this scope sysParam.cpp: In member function `bool CSysParamAccess::setCompressionStrategy(const std::string&, paramSource)': sysParam.cpp:1849: error: `Z_FIXED' was not declared in this scope Alternatively, if I add the include path to the zlib z1.2.5 I am using, I get double defines, it seems as if the zlib.h is included twice with two different sets of -D values, but I don't see how that is happening: g++ -g -Werror -Wredundant-decls -I../../src/zlib-1.2.5 -D_FILE_OFFSET_BITS=64 -c -o ARCH.linux_26_i86/debug/sysParam.o sysParam.cpp In file included from sysParam.cpp:24: ../../src/zlib-1.2.5/zlib.h:1582: warning: redundant redeclaration of `void* gzopen64(const char*, const char*)' in same scope ../../src/zlib-1.2.5/zlib.h:1566: warning: previous declaration of `void* gzopen64(const char*, const char*)' ../../src/zlib-1.2.5/zlib.h:1583: warning: redundant redeclaration of `long long int gzseek64(void*, long long int, int)' in same scope ../../src/zlib-1.2.5/zlib.h:1567: warning: previous declaration of `off64_t gzseek64(void*, off64_t, int)' ../../src/zlib-1.2.5/zlib.h:1584: warning: redundant redeclaration of `long long int gztell64(void*)' in same scope ../../src/zlib-1.2.5/zlib.h:1568: warning: previous declaration of `off64_t gztell64(void*)' ../../src/zlib-1.2.5/zlib.h:1585: warning: redundant redeclaration of `long long int gzoffset64(void*)' in same scope ../../src/zlib-1.2.5/zlib.h:1569: warning: previous declaration of `off64_t gzoffset64(void*)' ../../src/zlib-1.2.5/zlib.h:1586: warning: redundant redeclaration of `uLong adler32_combine64(uLong, uLong, long long int)' in same scope ../../src/zlib-1.2.5/zlib.h:1570: warning: previous declaration of `uLong adler32_combine64(uLong, uLong, off64_t)' ../../src/zlib-1.2.5/zlib.h:1587: warning: redundant redeclaration of `uLong crc32_combine64(uLong, uLong, long long int)' in same scope ../../src/zlib-1.2.5/zlib.h:1571: warning: previous declaration of `uLong crc32_combine64(uLong, uLong, off64_t)' Here some of the relavent lines from zlib.h referred to above: // This would be line 1558 of zlib.h /* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if * both are true, the application gets the *64 functions, and the regular * functions are changed to 64 bits) -- in case these are set on systems * without large file support, _LFS64_LARGEFILE must also be true */ #if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0 ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t)); ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t)); #endif #if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS-0 == 64 && _LFS64_LARGEFILE-0 # define gzopen gzopen64 # define gzseek gzseek64 # define gztell gztell64 # define gzoffset gzoffset64 # define adler32_combine adler32_combine64 # define crc32_combine crc32_combine64 # ifdef _LARGEFILE64_SOURCE ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int)); ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile)); ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile)); ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); # endif #else ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *)); ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int)); ZEXTERN z_off_t ZEXPORT gztell OF((gzFile)); ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile)); ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t)); ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t)); #endif // This would be line 1597 of zlib.h I'm not sure how to track this down further. I tried moving the include of zlib.h to the top and bottom of the includes list of the cpp file, but it made no difference. An excerpt of passing -E to g++ shows in part: extern int inflateInit2_ (z_streamp strm, int windowBits, const char *version, int stream_size); extern int inflateBackInit_ (z_streamp strm, int windowBits, unsigned char *window, const char *version, int stream_size); # 1566 "../../src/zlib-1.2.5/zlib.h" extern gzFile gzopen64 (const char *, const char *); extern off64_t gzseek64 (gzFile, off64_t, int); extern off64_t gztell64 (gzFile); extern off64_t gzoffset64 (gzFile); extern uLong adler32_combine64 (uLong, uLong, off64_t); extern uLong crc32_combine64 (uLong, uLong, off64_t); # 1582 "../../src/zlib-1.2.5/zlib.h" extern gzFile gzopen64 (const char *, const char *); extern long long gzseek64 (gzFile, long long, int); extern long long gztell64 (gzFile); extern long long gzoffset64 (gzFile); extern uLong adler32_combine64 (uLong, uLong, long long); extern uLong crc32_combine64 (uLong, uLong, long long); # 1600 "../../src/zlib-1.2.5/zlib.h" struct internal_state {int dummy;}; Not sure why lines 1566 and 1582 are coming out together in the CPP output, but hence the warning about duplicate declarations.

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• Where to put constant strings in C++: static class members or anonymous namespaces

  - by stone

  I need to define some constant strings that will be used only by one class. It looks like I have three options: Embed the strings directly into locations where they are used. Define them as private static constant members of the class: //A.h class A { private: static const std::string f1; static const std::string f2; static const std::string f3; }; //A.cpp const std::string f1 = "filename1"; const std::string f2 = "filename2"; const std::string f3 = "filename3"; //strings are used in this file Define them in an anonymous namespace in the cpp file: //A.cpp namespace { const std::string f1 = "filename1"; const std::string f2 = "filename2"; const std::string f3 = "filename3"; } //strings are used in this file Given these options, which one would you recommend and why? Thanks.

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• Trying to reduce the speed overhead of an almost-but-not-quite-int number class

  - by Fumiyo Eda

  I have implemented a C++ class which behaves very similarly to the standard int type. The difference is that it has an additional concept of "epsilon" which represents some tiny value that is much less than 1, but greater than 0. One way to think of it is as a very wide fixed point number with 32 MSBs (the integer parts), 32 LSBs (the epsilon parts) and a huge sea of zeros in between. The following class works, but introduces a ~2x speed penalty in the overall program. (The program includes code that has nothing to do with this class, so the actual speed penalty of this class is probably much greater than 2x.) I can't paste the code that is using this class, but I can say the following: +, -, +=, <, > and >= are the only heavily used operators. Use of setEpsilon() and getInt() is extremely rare. * is also rare, and does not even need to consider the epsilon values at all. Here is the class: #include <limits> struct int32Uepsilon { typedef int32Uepsilon Self; int32Uepsilon () { _value = 0; _eps = 0; } int32Uepsilon (const int &i) { _value = i; _eps = 0; } void setEpsilon() { _eps = 1; } Self operator+(const Self &rhs) const { Self result = *this; result._value += rhs._value; result._eps += rhs._eps; return result; } Self operator-(const Self &rhs) const { Self result = *this; result._value -= rhs._value; result._eps -= rhs._eps; return result; } Self operator-( ) const { Self result = *this; result._value = -result._value; result._eps = -result._eps; return result; } Self operator*(const Self &rhs) const { return this->getInt() * rhs.getInt(); } // XXX: discards epsilon bool operator<(const Self &rhs) const { return (_value < rhs._value) || (_value == rhs._value && _eps < rhs._eps); } bool operator>(const Self &rhs) const { return (_value > rhs._value) || (_value == rhs._value && _eps > rhs._eps); } bool operator>=(const Self &rhs) const { return (_value >= rhs._value) || (_value == rhs._value && _eps >= rhs._eps); } Self &operator+=(const Self &rhs) { this->_value += rhs._value; this->_eps += rhs._eps; return *this; } Self &operator-=(const Self &rhs) { this->_value -= rhs._value; this->_eps -= rhs._eps; return *this; } int getInt() const { return(_value); } private: int _value; int _eps; }; namespace std { template<> struct numeric_limits<int32Uepsilon> { static const bool is_signed = true; static int max() { return 2147483647; } } }; The code above works, but it is quite slow. Does anyone have any ideas on how to improve performance? There are a few hints/details I can give that might be helpful: 32 bits are definitely insufficient to hold both _value and _eps. In practice, up to 24 ~ 28 bits of _value are used and up to 20 bits of _eps are used. I could not measure a significant performance difference between using int32_t and int64_t, so memory overhead itself is probably not the problem here. Saturating addition/subtraction on _eps would be cool, but isn't really necessary. Note that the signs of _value and _eps are not necessarily the same! This broke my first attempt at speeding this class up. Inline assembly is no problem, so long as it works with GCC on a Core i7 system running Linux!

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• Memory leak in C++ program.

  - by lampshade

  What I have is a very crude linked list..THe problem for me is that I am getting a memory leak in the constructor or main. I think it is the constructor. I have not yet deleted the eventName varaible that I have allocated memory for. Could someone help please? :/ (This is not a homework question) class Event { private: char * eventName ; string userEvent; struct node { node(); node * nextByName; const char * eventName; }; node * headByName; public: Event(const char * eventName, const Date &myDate); Event(); virtual ~Event(); void insert(const char * eventName, const Date &myDate, const Time &myTime); void setEvent(); const char * const getEvent() const { return userEvent.c_str(); }; void displayByName(ostream& out) const; }; Event::Event(const char * eventName, const Date &myDate) : eventName(new char[strlen(eventName)+1]), headByName(NULL), userEvent("") { if (eventName) { size_t length = strlen(eventName) +1; strcpy_s(this->eventName, length, eventName); } else eventName = NULL; } Event::Event() : eventName(NULL), userEvent(NULL), headByName(NULL) { } Event::~Event() { node * temp_node = NULL; node * current_node = headByName; while ( current_node ) { temp_node = current_node->nextByName; delete current_node; current_node = temp_node; } } void Event::insert(const char * eventName, const Date &myDate, const Time &myTime) // when we insert we dont care about the time, just the name and the date { node * current_node = new node(); if ( headByName == NULL ) { headByName = current_node; headByName->eventName = eventName; } else { node * search_node = headByName; node * prev_node = NULL; while ( search_node != NULL ) { prev_node = search_node; search_node = search_node->nextByName; } if ( NULL == prev_node ) { headByName = current_node; } else { prev_node->nextByName = current_node; } current_node->nextByName = search_node; current_node->eventName = eventName ; } } void Event::displayByName(ostream& out) const { cout << "Scheduled Events are: " << endl << endl; node * current_node = headByName; while ( current_node ) { (char*)eventName = (char*)current_node->eventName; out << eventName << endl; current_node = current_node->nextByName; } } Event::node::node() : nextByName(NULL), eventName(NULL) { } void Event::setEvent() { cout << "\n\nEnter a new event! "; cin.getline((char*)userEvent.c_str(), 256); size_t length = strlen(userEvent.c_str()) +1; strcpy_s((char*)this->userEvent.c_str(), length, userEvent.c_str()); } /********************************************************************************* **********************************************************************************/ int main() { Date * dPtr = new Date("March", 21, 2010); // instaintiate our Date class object by allocating default date paramateres. Event * ePtr = new Event("First Day of Spring", *dPtr); Time * tPtr = new Time(10,12,"PM"); cout << "default Time is: " << tPtr << endl; cout << "default Date is: " << dPtr << endl; ePtr->insert("First Day of Spring",*dPtr, *tPtr); ePtr->insert("Valentines Day", Date("February",14,2010), *tPtr); ePtr->insert("New Years Day", Date("Janurary",1,2011), *tPtr); ePtr->insert("St. Patricks Day", Date("March",17,2010), *tPtr); ePtr->displayByName(cout); ePtr->setEvent(); const char * const theEvent = ePtr->getEvent(); dPtr->setDate(); ePtr->insert(theEvent, *dPtr, *tPtr); tPtr->setTime(); cout << "Your event: " << theEvent << " is scheduled for: " << endl << dPtr << "at" << tPtr; ePtr->displayByName(cout); delete tPtr; delete dPtr; delete ePtr; cin.ignore(); return 0; }

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• possible implementations of casting in c++

  - by lego69

  I have this snippet of the code in my header: class A { private: int player; public: A(int initPlayer = 0); A(const A&); A& operator=(const A&); ~A(); void foo() const; friend int operator==(const A& i, const A& member) const; }; implementation of the operator== int operator==(const A& i, const A& member) const{ if(i.player == member.player){ return 1; } return 0; } and I need casting for this part of my code: A *pa1 = new A(a2); assert(i == *pa1); i - is some int, which my function receives I receive an error non-member function, How can I fix it? thanks in advance

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• Wow ! “Add reference” dialog in VS 2010 is showing up quickly

  - by anas

  I just wanted to mention that one of the cool enhancements in VS 2010 is that the “Add reference “ dialog will show up quickly and will load the assemblies on demand. Thanks For VS team for this enhancement !...(read more)

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• 6 important .NET concepts: - Stack, heap, Value types, reference types, boxing and Unboxing.

  6 important .NET concepts: - Stack, heap, Value types, reference types, boxing and Unboxing....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• libgtk2.0-common fails to build with Gdk-2.0.gir error, Type reference 'GdkPixbuf' not found

  - by Stefano Palazzo

  I'm trying to build gtk, but it fails. Here's what I'm doing: sudo apt-get build-dep libgtk2.0-common sudo apt-get source libgtk2.0-common cd gtk+2.0-2.22.0/ sudo gedit gtk/gtktreeview.c & #...editing a few files (or not, it's the same error) sudo ./configure --prefix=/usr sudo make The compilation runs for a while and then quits: Gdk-2.0.gir: error: Type reference 'GdkPixbuf' not found ... make: *** [all] Error 2 What am I doing wrong?

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• How to get a Read-Write Reference to Parent GameObject from a script component attached to it?

  - by onguarde

  I have a game object(object) with a script component(myscript) attached. I have a reference to myscript component through getComponent, and I want to change the transform of the gameObject the script is attached to. myscript.gameObject.transform = (new value); The above code gives me error, Property 'UnityEngine.GameObject.transform' is read only. Is there a way to get a read-write version?

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• How to convert AS3 ByteArray into wchar_t const* filename? (Adobe Alchemy)

  - by Ole Jak

  How to convert AS3 ByteArray into wchar_t const* filename? So in my C code I have a function waiting for a file with void fun (wchar_t const* filename) how to send to that function my ByteArray? (Or, how should I re-write my function?)

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• What does "void (* parse_arg_function)(const char*)" function argument mean in C?

  - by user118657

  What does the last function argument mean in C language? Please, point to documentation where I can read about it. void parse_options( int argc, char **argv, const OptionDef *options, void (* parse_arg_function)(const char*) ) Thanks.

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• What is the difference between these two uses of const in C++?

  - by lego69

  What is the difference between A const * pa2 = pa1; and A * const pa2 = pa1; (I have some class A for example).

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