Cstdlib Dev C++

13.04.2020
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Mar 15, 2013 Prima lezione per quanto riguarda la programmazione in c. Per qualsiasi cosiglio o richiesta scrivete qui sotto. Dec 27, 2010  Does dev c have cstdlib and time.h? I have a c code with cstdlib and time.h, but it wont compile, so do i have to download those and if so where? Favorite Answer. Change time.h to #include.

This header was originally in the C standard library as. This header provides miscellaneous utilities. Symbols defined here are used by several library components. If you get it 'for free' with, that's a sign that your header requires it, but then you're relying on an implementation detail of your C library. Btw., #include cstdlib is not guaranteed to bring C functions into the global namespace (although it commonly does so in C implementations); it is guaranteed to put them in. Paklib provides easy-to-use pak-file access for the well-known Quake 2 PAK files. It consists of two files and is easy to use in your source code. It is written in pure C and makes only use of stdio.h, stdlib.h and string.h If you are a game developer.

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Cstdlib Dev C 4

  1. #include <cmath>
  2. #include <iostream>
  3. #include <string>
  4. #include <SDL2/SDL.h>
  5. //maybe add timer and cross?
  6. //chunks to read in and write to the file
  7. constexpr int FRAME_Y =600;
  8. constexpr double SUB_FRAME_RATIO =0.8;
  9. //the void* to be passed for rendering
  10. {
  11. volatileint start_index;
  12. SDL_Renderer *rend;
  13. bool up;
  14. int render_callback( Uint32 interval, void*param )
  15. struct current_audio_buffer* ab =( current_audio_buffer*)( param );
  16. SDL_SetRenderDrawColor(ab->rend, 0x00, 0x00, 0x00, 0xFF);
  17. constint divide_scale =(INT32_MAX/(SQ_SIZE * SUB_FRAME_RATIO/2));
  18. constint Y_CENTER = FRAME_Y/2;
  19. // have color shift over time
  20. {
  21. }
  22. {
  23. }
  24. ab->green +=(ab->up 1?1:-1);
  25. // draw simple grid
  26. SDL_SetRenderDrawColor( ab->rend, 0x10,0x10,0x10,0xFF);
  27. SDL_RenderDrawLine( ab->rend,
  28. X_CENTER, FRAME_Y
  29. 0 , Y_CENTER,
  30. );
  31. SDL_RenderDrawLine( ab->rend,
  32. FRAME_X, FRAME_Y
  33. 0 , FRAME_Y,
  34. );
  35. for(int i = ab->start_index; i < ab->start_index + ab->samples_per_frame -2; i+=2)
  36. //if ( radius <= 0x20000000 )
  37. // SDL_SetRenderDrawColor( ab->rend, 0x00 + radius_m + ab->green / 2, ab->green, 0xFF - radius_m - ab->green / 2, 0xFF );
  38. //else
  39. //}
  40. SDL_SetRenderDrawColor(ab->rend, 0xFF- ab->green, ab->green, 0xFF, 0xFF);
  41. SDL_RenderDrawPoint (ab->rend,
  42. (-1*(ab->data)[i +1])/(divide_scale)+ Y_CENTER
  43. ab->start_index =(ab->start_index + ab->samples_per_frame)&(~1);
  44. SDL_RenderPresent(ab->rend);
  45. //set the next frame to be rendered in 1000/framerate minus the time we spent here
  46. return1000/frame_rate -(SDL_GetTicks()- TICK_START);
  47. {
  48. bool quit =false;
  49. if( argc !=2)
  50. std::cerr<<'Usage n'
  51. <<'XY Visualize <wav or flac file to visualize>'<< std::endl;
  52. }
  53. std::string in_name = argv[1];
  54. if(in_name.substr( in_name.size()-4, 4)!='.wav'&& in_name.substr( in_name.size()-5, 5)!='.flac')
  55. std::cerr<<'Must input wav or flac file!!!'<< std::endl;
  56. }
  57. SF_INFO info_in [1];
  58. SNDFILE* file_in = sf_open(in_name.c_str(),SFM_READ, info_in);
  59. buff_size = buff_size +(buff_size % info_in->channels);
  60. // in buffer to read in from the file
  61. // maybe have a second buffer to read from disc the next bytes asynchoronously?
  62. std::unique_ptr<int[]> in_buffer = std::unique_ptr<int[]>(newint[buff_size]);
  63. SDL_Init(SDL_INIT_AUDIO SDL_INIT_VIDEO SDL_INIT_TIMER);
  64. SDL_AudioDeviceID dev;
  65. SDL_Window *window;
  66. SDL_Event e;
  67. SDL_CreateWindowAndRenderer( FRAME_X,
  68. SDL_WINDOW_OPENGL, // SDL_WINDOW_RESIZABLE,
  69. &renderer );
  70. std::string file_name;
  71. int found = in_name.find_last_of('/');
  72. {
  73. }
  74. {
  75. }
  76. std::string window_name =(std::string)'XY Visualize: '+ file_name;
  77. SDL_SetWindowPosition(window, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
  78. SDL_memset(&have, 0, sizeof(have));
  79. //make the SDL match with the data we have
  80. want.format= AUDIO_S32;
  81. want.samples= buff_size *sizeof(*(in_buffer.get()));
  82. //open device
  83. dev = SDL_OpenAudioDevice(NULL, 0, &want, &have, SDL_AUDIO_ALLOW_FORMAT_CHANGE);
  84. constint frames_per_buffer_read =(buff_size * frame_rate /(info_in->channels * info_in->samplerate));
  85. constint samples_per_frame =((info_in->channels * info_in->samplerate)/ frame_rate);
  86. //make struct to pass to callbacks
  87. {
  88. .start_index=0,
  89. .rend= renderer,
  90. .up=1
  91. SDL_PauseAudioDevice(dev, 0);
  92. Uint32 TICK_START = SDL_GetTicks();
  93. //read data from queue, and start timers for frame rendering
  94. while(int read_in = sf_read_int(file_in, in_buffer.get(), buff_size))
  95. if(quit)
  96. break;
  97. AUDIO_BUFFER.start_index=0;
  98. SDL_QueueAudio(dev, in_buffer.get(), sizeof(*(in_buffer.get()))* read_in );
  99. SDL_TimerID TID = SDL_AddTimer(static_cast<Uint32>(1000/ frame_rate),
  100. (void*)(&AUDIO_BUFFER));
  101. SDL_Delay(500* read_in/(info_in->channels * info_in->samplerate)-(SDL_GetTicks()- TICK_START));
  102. SDL_PumpEvents();
  103. while(SDL_PollEvent(&e))
  104. //If user closes the window
  105. {
  106. }
  107. SDL_Delay(1000* read_in /(info_in->channels * info_in->samplerate)-(SDL_GetTicks()- TICK_START));
  108. SDL_RemoveTimer(TID);
  109. sf_close(file_in);
  110. SDL_CloseAudioDevice(dev);
  111. SDL_DestroyWindow(window);
  112. SDL_Quit();
  113. return0;