kc3-lang/SDL/test/teststreaming.c

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• Hash : 0479df53
  Author :
  Date : 2023-01-09T09:48:21
  

  Updated copyright for 2023

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• test/teststreaming.c

• /*
    Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely.
  */
  /********************************************************************************
   *                                                                              *
   * Running moose :) Coded by Mike Gorchak.                                      *
   *                                                                              *
   ********************************************************************************/
  
  #include <stdlib.h>
  #include <stdio.h>
  
  #ifdef __EMSCRIPTEN__
  #include <emscripten/emscripten.h>
  #endif
  
  #include "SDL.h"
  #include "testutils.h"
  
  #define MOOSEPIC_W 64
  #define MOOSEPIC_H 88
  
  #define MOOSEFRAME_SIZE   (MOOSEPIC_W * MOOSEPIC_H)
  #define MOOSEFRAMES_COUNT 10
  
  /* *INDENT-OFF* */ /* clang-format off */
  SDL_Color MooseColors[84] = {
      {49, 49, 49, 255}, {66, 24, 0, 255}, {66, 33, 0, 255}, {66, 66, 66, 255},
      {66, 115, 49, 255}, {74, 33, 0, 255}, {74, 41, 16, 255}, {82, 33, 8, 255},
      {82, 41, 8, 255}, {82, 49, 16, 255}, {82, 82, 82, 255}, {90, 41, 8, 255},
      {90, 41, 16, 255}, {90, 57, 24, 255}, {99, 49, 16, 255}, {99, 66, 24, 255},
      {99, 66, 33, 255}, {99, 74, 33, 255}, {107, 57, 24, 255}, {107, 82, 41, 255},
      {115, 57, 33, 255}, {115, 66, 33, 255}, {115, 66, 41, 255}, {115, 74, 0, 255},
      {115, 90, 49, 255}, {115, 115, 115, 255}, {123, 82, 0, 255}, {123, 99, 57, 255},
      {132, 66, 41, 255}, {132, 74, 41, 255}, {132, 90, 8, 255}, {132, 99, 33, 255},
      {132, 99, 66, 255}, {132, 107, 66, 255}, {140, 74, 49, 255}, {140, 99, 16, 255},
      {140, 107, 74, 255}, {140, 115, 74, 255}, {148, 107, 24, 255}, {148, 115, 82, 255},
      {148, 123, 74, 255}, {148, 123, 90, 255}, {156, 115, 33, 255}, {156, 115, 90, 255},
      {156, 123, 82, 255}, {156, 132, 82, 255}, {156, 132, 99, 255}, {156, 156, 156, 255},
      {165, 123, 49, 255}, {165, 123, 90, 255}, {165, 132, 82, 255}, {165, 132, 90, 255},
      {165, 132, 99, 255}, {165, 140, 90, 255}, {173, 132, 57, 255}, {173, 132, 99, 255},
      {173, 140, 107, 255}, {173, 140, 115, 255}, {173, 148, 99, 255}, {173, 173, 173, 255},
      {181, 140, 74, 255}, {181, 148, 115, 255}, {181, 148, 123, 255}, {181, 156, 107, 255},
      {189, 148, 123, 255}, {189, 156, 82, 255}, {189, 156, 123, 255}, {189, 156, 132, 255},
      {189, 189, 189, 255}, {198, 156, 123, 255}, {198, 165, 132, 255}, {206, 165, 99, 255},
      {206, 165, 132, 255}, {206, 173, 140, 255}, {206, 206, 206, 255}, {214, 173, 115, 255},
      {214, 173, 140, 255}, {222, 181, 148, 255}, {222, 189, 132, 255}, {222, 189, 156, 255},
      {222, 222, 222, 255}, {231, 198, 165, 255}, {231, 231, 231, 255}, {239, 206, 173, 255}
  };
  /* *INDENT-ON* */ /* clang-format on */
  
  Uint8 MooseFrames[MOOSEFRAMES_COUNT][MOOSEFRAME_SIZE];
  
  SDL_Renderer *renderer;
  int frame;
  SDL_Texture *MooseTexture;
  SDL_bool done = SDL_FALSE;
  
  void quit(int rc)
  {
      SDL_Quit();
      exit(rc);
  }
  
  void UpdateTexture(SDL_Texture *texture)
  {
      SDL_Color *color;
      Uint8 *src;
      Uint32 *dst;
      int row, col;
      void *pixels;
      int pitch;
  
      if (SDL_LockTexture(texture, NULL, &pixels, &pitch) < 0) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't lock texture: %s\n", SDL_GetError());
          quit(5);
      }
      src = MooseFrames[frame];
      for (row = 0; row < MOOSEPIC_H; ++row) {
          dst = (Uint32 *)((Uint8 *)pixels + row * pitch);
          for (col = 0; col < MOOSEPIC_W; ++col) {
              color = &MooseColors[*src++];
              *dst++ = (0xFF000000 | (color->r << 16) | (color->g << 8) | color->b);
          }
      }
      SDL_UnlockTexture(texture);
  }
  
  void loop()
  {
      SDL_Event event;
  
      while (SDL_PollEvent(&event)) {
          switch (event.type) {
          case SDL_KEYDOWN:
              if (event.key.keysym.sym == SDLK_ESCAPE) {
                  done = SDL_TRUE;
              }
              break;
          case SDL_QUIT:
              done = SDL_TRUE;
              break;
          }
      }
  
      frame = (frame + 1) % MOOSEFRAMES_COUNT;
      UpdateTexture(MooseTexture);
  
      SDL_RenderClear(renderer);
      SDL_RenderCopy(renderer, MooseTexture, NULL, NULL);
      SDL_RenderPresent(renderer);
  
  #ifdef __EMSCRIPTEN__
      if (done) {
          emscripten_cancel_main_loop();
      }
  #endif
  }
  
  int main(int argc, char **argv)
  {
      SDL_Window *window;
      SDL_RWops *handle;
      char *filename = NULL;
  
      /* Enable standard application logging */
      SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
  
      if (SDL_Init(SDL_INIT_VIDEO) < 0) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
          return 1;
      }
  
      /* load the moose images */
      filename = GetResourceFilename(NULL, "moose.dat");
      if (filename == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory\n");
          return -1;
      }
      handle = SDL_RWFromFile(filename, "rb");
      SDL_free(filename);
      if (handle == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Can't find the file moose.dat !\n");
          quit(2);
      }
      SDL_RWread(handle, MooseFrames, MOOSEFRAME_SIZE, MOOSEFRAMES_COUNT);
      SDL_RWclose(handle);
  
      /* Create the window and renderer */
      window = SDL_CreateWindow("Happy Moose",
                                SDL_WINDOWPOS_UNDEFINED,
                                SDL_WINDOWPOS_UNDEFINED,
                                MOOSEPIC_W * 4, MOOSEPIC_H * 4,
                                SDL_WINDOW_RESIZABLE);
      if (window == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create window: %s\n", SDL_GetError());
          quit(3);
      }
  
      renderer = SDL_CreateRenderer(window, -1, 0);
      if (renderer == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create renderer: %s\n", SDL_GetError());
          quit(4);
      }
  
      MooseTexture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, MOOSEPIC_W, MOOSEPIC_H);
      if (MooseTexture == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create texture: %s\n", SDL_GetError());
          quit(5);
      }
  
      /* Loop, waiting for QUIT or the escape key */
      frame = 0;
  
  #ifdef __EMSCRIPTEN__
      emscripten_set_main_loop(loop, 0, 1);
  #else
      while (!done) {
          loop();
      }
  #endif
  
      SDL_DestroyRenderer(renderer);
  
      quit(0);
      return 0;
  }
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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