SDL  2.0
teststreaming.c
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1 /*
2  Copyright (C) 1997-2018 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 
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 
58 
60 int frame;
63 
64 void quit(int rc)
65 {
66  SDL_Quit();
67  exit(rc);
68 }
69 
71 {
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
96 {
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 {
130  SDL_RWops *handle;
131 
132  /* Enable standard application logging */
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  }
147  SDL_RWclose(handle);
148 
149 
150  /* Create the window and renderer */
151  window = SDL_CreateWindow("Happy Moose",
154  MOOSEPIC_W*4, MOOSEPIC_H*4,
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 
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: */
#define SDL_CreateTexture
#define SDL_PollEvent
#define SDL_GetError
Uint8 g
Definition: SDL_pixels.h:298
GLenum GLenum dst
#define MOOSEFRAMES_COUNT
Definition: teststreaming.c:31
#define SDL_RWread(ctx, ptr, size, n)
Definition: SDL_rwops.h:187
Uint8 b
Definition: SDL_pixels.h:299
#define SDL_CreateWindow
#define SDL_WINDOWPOS_UNDEFINED
Definition: SDL_video.h:130
uint32_t Uint32
Definition: SDL_stdinc.h:181
GLenum src
SDL_Renderer * renderer
Definition: teststreaming.c:59
#define SDL_LogError
#define SDL_UnlockTexture
#define SDL_RenderCopy
#define SDL_RWFromFile
GLenum GLenum GLuint texture
Uint8 r
Definition: SDL_pixels.h:297
EGLImageKHR EGLint EGLint * handle
Definition: eglext.h:937
#define SDL_LockTexture
void quit(int rc)
Definition: teststreaming.c:64
uint8_t Uint8
Definition: SDL_stdinc.h:157
struct _cl_event * event
int frame
Definition: teststreaming.c:60
void loop()
Definition: teststreaming.c:95
#define SDL_Quit
SDL_Texture * MooseTexture
Definition: teststreaming.c:61
SDL_Keysym keysym
Definition: SDL_events.h:199
#define MOOSEPIC_W
Definition: teststreaming.c:27
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1572
#define SDL_LogSetPriority
#define NULL
Definition: begin_code.h:164
SDL_bool
Definition: SDL_stdinc.h:139
#define SDL_RWclose(ctx)
Definition: SDL_rwops.h:189
#define SDL_RenderClear
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
SDL_KeyboardEvent key
Definition: SDL_events.h:530
SDL_Color MooseColors[84]
Definition: teststreaming.c:33
The type used to identify a window.
Definition: SDL_sysvideo.h:73
Uint8 MooseFrames[MOOSEFRAMES_COUNT][MOOSEFRAME_SIZE]
Definition: teststreaming.c:57
GLuint color
SDL_Keycode sym
Definition: SDL_keyboard.h:50
#define SDL_Init
General event structure.
Definition: SDL_events.h:525
int main(int argc, char **argv)
#define SDL_DestroyRenderer
#define MOOSEFRAME_SIZE
Definition: teststreaming.c:30
GLenum GLenum void * row
SDL_bool done
Definition: teststreaming.c:62
void UpdateTexture(SDL_Texture *texture, int frame)
Definition: teststreaming.c:70
#define SDL_INIT_VIDEO
Definition: SDL.h:78
#define SDL_CreateRenderer
#define MOOSEPIC_H
Definition: teststreaming.c:28
#define SDL_RenderPresent
Uint32 type
Definition: SDL_events.h:527