test/teststreaming.c
author Philipp Wiesemann <philipp.wiesemann@arcor.de>
Sat, 24 Jun 2017 23:45:44 +0200
changeset 11113 d4fa79a1b32c
parent 10737 3406a0f8b041
permissions -rw-r--r--
winrt: Fixed SDL include.
     1 /*
     2   Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
     3 
     4   This software is provided 'as-is', without any express or implied
     5   warranty.  In no event will the authors be held liable for any damages
     6   arising from the use of this software.
     7 
     8   Permission is granted to anyone to use this software for any purpose,
     9   including commercial applications, and to alter it and redistribute it
    10   freely.
    11 */
    12 /********************************************************************************
    13  *                                                                              *
    14  * Running moose :) Coded by Mike Gorchak.                                      *
    15  *                                                                              *
    16  ********************************************************************************/
    17 
    18 #include <stdlib.h>
    19 #include <stdio.h>
    20 
    21 #ifdef __EMSCRIPTEN__
    22 #include <emscripten/emscripten.h>
    23 #endif
    24 
    25 #include "SDL.h"
    26 
    27 #define MOOSEPIC_W 64
    28 #define MOOSEPIC_H 88
    29 
    30 #define MOOSEFRAME_SIZE (MOOSEPIC_W * MOOSEPIC_H)
    31 #define MOOSEFRAMES_COUNT 10
    32 
    33 SDL_Color MooseColors[84] = {
    34     {49, 49, 49, 255}, {66, 24, 0, 255}, {66, 33, 0, 255}, {66, 66, 66, 255},
    35     {66, 115, 49, 255}, {74, 33, 0, 255}, {74, 41, 16, 255}, {82, 33, 8, 255},
    36     {82, 41, 8, 255}, {82, 49, 16, 255}, {82, 82, 82, 255}, {90, 41, 8, 255},
    37     {90, 41, 16, 255}, {90, 57, 24, 255}, {99, 49, 16, 255}, {99, 66, 24, 255},
    38     {99, 66, 33, 255}, {99, 74, 33, 255}, {107, 57, 24, 255}, {107, 82, 41, 255},
    39     {115, 57, 33, 255}, {115, 66, 33, 255}, {115, 66, 41, 255}, {115, 74, 0, 255},
    40     {115, 90, 49, 255}, {115, 115, 115, 255}, {123, 82, 0, 255}, {123, 99, 57, 255},
    41     {132, 66, 41, 255}, {132, 74, 41, 255}, {132, 90, 8, 255}, {132, 99, 33, 255},
    42     {132, 99, 66, 255}, {132, 107, 66, 255}, {140, 74, 49, 255}, {140, 99, 16, 255},
    43     {140, 107, 74, 255}, {140, 115, 74, 255}, {148, 107, 24, 255}, {148, 115, 82, 255},
    44     {148, 123, 74, 255}, {148, 123, 90, 255}, {156, 115, 33, 255}, {156, 115, 90, 255},
    45     {156, 123, 82, 255}, {156, 132, 82, 255}, {156, 132, 99, 255}, {156, 156, 156, 255},
    46     {165, 123, 49, 255}, {165, 123, 90, 255}, {165, 132, 82, 255}, {165, 132, 90, 255},
    47     {165, 132, 99, 255}, {165, 140, 90, 255}, {173, 132, 57, 255}, {173, 132, 99, 255},
    48     {173, 140, 107, 255}, {173, 140, 115, 255}, {173, 148, 99, 255}, {173, 173, 173, 255},
    49     {181, 140, 74, 255}, {181, 148, 115, 255}, {181, 148, 123, 255}, {181, 156, 107, 255},
    50     {189, 148, 123, 255}, {189, 156, 82, 255}, {189, 156, 123, 255}, {189, 156, 132, 255},
    51     {189, 189, 189, 255}, {198, 156, 123, 255}, {198, 165, 132, 255}, {206, 165, 99, 255},
    52     {206, 165, 132, 255}, {206, 173, 140, 255}, {206, 206, 206, 255}, {214, 173, 115, 255},
    53     {214, 173, 140, 255}, {222, 181, 148, 255}, {222, 189, 132, 255}, {222, 189, 156, 255},
    54     {222, 222, 222, 255}, {231, 198, 165, 255}, {231, 231, 231, 255}, {239, 206, 173, 255}
    55 };
    56 
    57 Uint8 MooseFrames[MOOSEFRAMES_COUNT][MOOSEFRAME_SIZE];
    58 
    59 SDL_Renderer *renderer;
    60 int frame;
    61 SDL_Texture *MooseTexture;
    62 SDL_bool done = SDL_FALSE;
    63 
    64 void quit(int rc)
    65 {
    66     SDL_Quit();
    67     exit(rc);
    68 }
    69 
    70 void UpdateTexture(SDL_Texture *texture, int frame)
    71 {
    72     SDL_Color *color;
    73     Uint8 *src;
    74     Uint32 *dst;
    75     int row, col;
    76     void *pixels;
    77     int pitch;
    78 
    79     if (SDL_LockTexture(texture, NULL, &pixels, &pitch) < 0) {
    80         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't lock texture: %s\n", SDL_GetError());
    81         quit(5);
    82     }
    83     src = MooseFrames[frame];
    84     for (row = 0; row < MOOSEPIC_H; ++row) {
    85         dst = (Uint32*)((Uint8*)pixels + row * pitch);
    86         for (col = 0; col < MOOSEPIC_W; ++col) {
    87             color = &MooseColors[*src++];
    88             *dst++ = (0xFF000000|(color->r<<16)|(color->g<<8)|color->b);
    89         }
    90     }
    91     SDL_UnlockTexture(texture);
    92 }
    93 
    94 void
    95 loop()
    96 {
    97     SDL_Event event;
    98 
    99     while (SDL_PollEvent(&event)) {
   100         switch (event.type) {
   101         case SDL_KEYDOWN:
   102             if (event.key.keysym.sym == SDLK_ESCAPE) {
   103                 done = SDL_TRUE;
   104             }
   105             break;
   106         case SDL_QUIT:
   107             done = SDL_TRUE;
   108             break;
   109         }
   110     }
   111 
   112     frame = (frame + 1) % MOOSEFRAMES_COUNT;
   113     UpdateTexture(MooseTexture, frame);
   114 
   115     SDL_RenderClear(renderer);
   116     SDL_RenderCopy(renderer, MooseTexture, NULL, NULL);
   117     SDL_RenderPresent(renderer);
   118 
   119 #ifdef __EMSCRIPTEN__
   120     if (done) {
   121         emscripten_cancel_main_loop();
   122     }
   123 #endif
   124 }
   125 
   126 int
   127 main(int argc, char **argv)
   128 {
   129     SDL_Window *window;
   130     SDL_RWops *handle;
   131 
   132     /* Enable standard application logging */
   133     SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
   134 
   135     if (SDL_Init(SDL_INIT_VIDEO) < 0) {
   136         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
   137         return 1;
   138     }
   139 
   140     /* load the moose images */
   141     handle = SDL_RWFromFile("moose.dat", "rb");
   142     if (handle == NULL) {
   143         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Can't find the file moose.dat !\n");
   144         quit(2);
   145     }
   146     SDL_RWread(handle, MooseFrames, MOOSEFRAME_SIZE, MOOSEFRAMES_COUNT);
   147     SDL_RWclose(handle);
   148 
   149 
   150     /* Create the window and renderer */
   151     window = SDL_CreateWindow("Happy Moose",
   152                               SDL_WINDOWPOS_UNDEFINED,
   153                               SDL_WINDOWPOS_UNDEFINED,
   154                               MOOSEPIC_W*4, MOOSEPIC_H*4,
   155                               SDL_WINDOW_RESIZABLE);
   156     if (!window) {
   157         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create window: %s\n", SDL_GetError());
   158         quit(3);
   159     }
   160 
   161     renderer = SDL_CreateRenderer(window, -1, 0);
   162     if (!renderer) {
   163         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create renderer: %s\n", SDL_GetError());
   164         quit(4);
   165     }
   166 
   167     MooseTexture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, MOOSEPIC_W, MOOSEPIC_H);
   168     if (!MooseTexture) {
   169         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create texture: %s\n", SDL_GetError());
   170         quit(5);
   171     }
   172 
   173     /* Loop, waiting for QUIT or the escape key */
   174     frame = 0;
   175 
   176 #ifdef __EMSCRIPTEN__
   177     emscripten_set_main_loop(loop, 0, 1);
   178 #else
   179     while (!done) {
   180         loop();
   181         }
   182 #endif
   183 
   184     SDL_DestroyRenderer(renderer);
   185 
   186     quit(0);
   187     return 0;
   188 }
   189 
   190 /* vi: set ts=4 sw=4 expandtab: */