SDL  2.0
testoverlay2.c File Reference
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "SDL.h"
+ Include dependency graph for testoverlay2.c:

Go to the source code of this file.

Macros

#define MOOSEPIC_W   64
 
#define MOOSEPIC_H   88
 
#define MOOSEFRAME_SIZE   (MOOSEPIC_W * MOOSEPIC_H)
 
#define MOOSEFRAMES_COUNT   10
 

Functions

static void quit (int rc)
 
void RGBtoYUV (Uint8 *rgb, int *yuv, int monochrome, int luminance)
 
void ConvertRGBtoYV12 (Uint8 *rgb, Uint8 *out, int w, int h, int monochrome, int luminance)
 
void ConvertRGBtoNV12 (Uint8 *rgb, Uint8 *out, int w, int h, int monochrome, int luminance)
 
static void PrintUsage (char *argv0)
 
void loop ()
 
int main (int argc, char **argv)
 

Variables

SDL_Color MooseColors [84]
 
Uint8 MooseFrame [MOOSEFRAMES_COUNT][MOOSEFRAME_SIZE *2]
 
SDL_TextureMooseTexture
 
SDL_Rect displayrect
 
int window_w
 
int window_h
 
SDL_Windowwindow
 
SDL_Rendererrenderer
 
int paused = 0
 
int i
 
SDL_bool done = SDL_FALSE
 
Uint32 pixel_format = SDL_PIXELFORMAT_YV12
 
int fpsdelay
 

Macro Definition Documentation

§ MOOSEFRAME_SIZE

#define MOOSEFRAME_SIZE   (MOOSEPIC_W * MOOSEPIC_H)

Definition at line 32 of file testoverlay2.c.

Referenced by main().

§ MOOSEFRAMES_COUNT

#define MOOSEFRAMES_COUNT   10

Definition at line 33 of file testoverlay2.c.

Referenced by loop(), and main().

§ MOOSEPIC_H

#define MOOSEPIC_H   88

Definition at line 30 of file testoverlay2.c.

Referenced by main().

§ MOOSEPIC_W

#define MOOSEPIC_W   64

Definition at line 29 of file testoverlay2.c.

Referenced by loop(), and main().

Function Documentation

§ ConvertRGBtoNV12()

void ConvertRGBtoNV12 ( Uint8 rgb,
Uint8 out,
int  w,
int  h,
int  monochrome,
int  luminance 
)

Definition at line 226 of file testoverlay2.c.

References RGBtoYUV().

Referenced by main().

228 {
229  int x, y;
230  int yuv[3];
231  Uint8 *op[2];
232 
233  op[0] = out;
234  op[1] = op[0] + w*h;
235  for (y = 0; y < h; ++y) {
236  for (x = 0; x < w; ++x) {
237  RGBtoYUV(rgb, yuv, monochrome, luminance);
238  *(op[0]++) = yuv[0];
239  if (x % 2 == 0 && y % 2 == 0) {
240  *(op[1]++) = yuv[1];
241  *(op[1]++) = yuv[2];
242  }
243  rgb += 3;
244  }
245  }
246 }
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1567
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:143
GLubyte GLubyte GLubyte GLubyte w
void RGBtoYUV(Uint8 *rgb, int *yuv, int monochrome, int luminance)
Definition: testoverlay2.c:170
GLfloat GLfloat GLfloat GLfloat h

§ ConvertRGBtoYV12()

void ConvertRGBtoYV12 ( Uint8 rgb,
Uint8 out,
int  w,
int  h,
int  monochrome,
int  luminance 
)

Definition at line 202 of file testoverlay2.c.

References RGBtoYUV().

Referenced by main().

204 {
205  int x, y;
206  int yuv[3];
207  Uint8 *op[3];
208 
209  op[0] = out;
210  op[1] = op[0] + w*h;
211  op[2] = op[1] + w*h/4;
212  for (y = 0; y < h; ++y) {
213  for (x = 0; x < w; ++x) {
214  RGBtoYUV(rgb, yuv, monochrome, luminance);
215  *(op[0]++) = yuv[0];
216  if (x % 2 == 0 && y % 2 == 0) {
217  *(op[1]++) = yuv[2];
218  *(op[2]++) = yuv[1];
219  }
220  rgb += 3;
221  }
222  }
223 }
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1567
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:143
GLubyte GLubyte GLubyte GLubyte w
void RGBtoYUV(Uint8 *rgb, int *yuv, int monochrome, int luminance)
Definition: testoverlay2.c:170
GLfloat GLfloat GLfloat GLfloat h

§ loop()

void loop ( )

Definition at line 266 of file testoverlay2.c.

References done, SDL_WindowEvent::event, fpsdelay, SDL_Rect::h, i, SDL_Event::key, SDL_KeyboardEvent::keysym, MooseFrame, MOOSEFRAMES_COUNT, MOOSEPIC_W, SDL_Event::motion, NULL, paused, pixel_format, SDL_BYTESPERPIXEL, SDL_Delay, SDL_KEYDOWN, SDL_MOUSEBUTTONDOWN, SDL_MOUSEMOTION, SDL_PollEvent, SDL_QUIT, SDL_RenderClear, SDL_RenderCopy, SDL_RenderPresent, SDL_RenderSetViewport, SDL_TRUE, SDL_UpdateTexture, SDL_WINDOWEVENT, SDL_WINDOWEVENT_RESIZED, SDLK_ESCAPE, SDLK_SPACE, SDL_MouseMotionEvent::state, SDL_Keysym::sym, SDL_Event::type, SDL_Rect::w, SDL_Event::window, window_h, window_w, SDL_Rect::x, and SDL_Rect::y.

Referenced by main().

267 {
269 
270  while (SDL_PollEvent(&event)) {
271  switch (event.type) {
272  case SDL_WINDOWEVENT:
273  if (event.window.event == SDL_WINDOWEVENT_RESIZED) {
275  displayrect.w = window_w = event.window.data1;
276  displayrect.h = window_h = event.window.data2;
277  }
278  break;
279  case SDL_MOUSEBUTTONDOWN:
280  displayrect.x = event.button.x - window_w / 2;
281  displayrect.y = event.button.y - window_h / 2;
282  break;
283  case SDL_MOUSEMOTION:
284  if (event.motion.state) {
285  displayrect.x = event.motion.x - window_w / 2;
286  displayrect.y = event.motion.y - window_h / 2;
287  }
288  break;
289  case SDL_KEYDOWN:
290  if (event.key.keysym.sym == SDLK_SPACE) {
291  paused = !paused;
292  break;
293  }
294  if (event.key.keysym.sym != SDLK_ESCAPE) {
295  break;
296  }
297  case SDL_QUIT:
298  done = SDL_TRUE;
299  break;
300  }
301  }
302 
303 #ifndef __EMSCRIPTEN__
305 #endif
306 
307  if (!paused) {
308  i = (i + 1) % MOOSEFRAMES_COUNT;
309 
311  }
315 
316 #ifdef __EMSCRIPTEN__
317  if (done) {
318  emscripten_cancel_main_loop();
319  }
320 #endif
321 }
#define SDL_RenderSetViewport
SDL_MouseMotionEvent motion
Definition: SDL_events.h:533
#define MOOSEPIC_W
Definition: testoverlay2.c:29
#define SDL_PollEvent
SDL_Texture * MooseTexture
Definition: testoverlay2.c:143
SDL_bool done
Definition: testoverlay2.c:151
#define SDL_BYTESPERPIXEL(X)
Definition: SDL_pixels.h:128
#define SDL_UpdateTexture
SDL_WindowEvent window
Definition: SDL_events.h:529
#define SDL_RenderCopy
Uint8 MooseFrame[MOOSEFRAMES_COUNT][MOOSEFRAME_SIZE *2]
Definition: testoverlay2.c:142
SDL_Renderer * renderer
Definition: testoverlay2.c:148
#define MOOSEFRAMES_COUNT
Definition: testoverlay2.c:33
struct _cl_event * event
int fpsdelay
Definition: testoverlay2.c:153
int paused
Definition: testoverlay2.c:149
int x
Definition: SDL_rect.h:66
SDL_Keysym keysym
Definition: SDL_events.h:199
int w
Definition: SDL_rect.h:67
#define SDL_Delay
#define NULL
Definition: begin_code.h:143
#define SDL_RenderClear
SDL_KeyboardEvent key
Definition: SDL_events.h:530
int h
Definition: SDL_rect.h:67
SDL_Keycode sym
Definition: SDL_keyboard.h:50
int window_h
Definition: testoverlay2.c:146
int i
Definition: testoverlay2.c:150
Uint32 pixel_format
Definition: testoverlay2.c:152
General event structure.
Definition: SDL_events.h:525
SDL_Rect displayrect
Definition: testoverlay2.c:144
int y
Definition: SDL_rect.h:66
int window_w
Definition: testoverlay2.c:145
#define SDL_RenderPresent
Uint32 type
Definition: SDL_events.h:527

§ main()

int main ( int  argc,
char **  argv 
)

Definition at line 324 of file testoverlay2.c.

References SDL_Color::b, ConvertRGBtoNV12(), ConvertRGBtoYV12(), done, fpsdelay, frame, free, SDL_Color::g, SDL_Rect::h, i, j, loop(), malloc, MooseFrame, MOOSEFRAME_SIZE, MOOSEFRAMES_COUNT, MOOSEPIC_H, MOOSEPIC_W, NULL, pixel_format, PrintUsage(), quit(), SDL_Color::r, SDL_CreateRenderer, SDL_CreateTexture, SDL_CreateWindow, SDL_DestroyRenderer, SDL_EventState, SDL_GetError, SDL_IGNORE, SDL_Init, SDL_INIT_VIDEO, SDL_KEYUP, SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, SDL_LogError, SDL_LogSetPriority, SDL_PIXELFORMAT_NV12, SDL_PIXELFORMAT_YV12, SDL_RWclose, SDL_RWFromFile, SDL_RWread, SDL_TEXTUREACCESS_STREAMING, SDL_WINDOW_RESIZABLE, SDL_WINDOWPOS_UNDEFINED, SDL_Rect::w, window, window_h, window_w, SDL_Rect::x, and SDL_Rect::y.

325 {
326  Uint8 *RawMooseData;
327  SDL_RWops *handle;
329  int j;
330  int fps = 12;
331  int fpsdelay;
332  int nodelay = 0;
333 #ifdef TEST_NV12
335 #else
336  Uint32 pixel_format = SDL_PIXELFORMAT_YV12;
337 #endif
338  int scale = 5;
339 
340  /* Enable standard application logging */
342 
343  if (SDL_Init(SDL_INIT_VIDEO) < 0) {
344  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
345  return 3;
346  }
347 
348  while (argc > 1) {
349  if (strcmp(argv[1], "-fps") == 0) {
350  if (argv[2]) {
351  fps = atoi(argv[2]);
352  if (fps == 0) {
354  "The -fps option requires an argument [from 1 to 1000], default is 12.\n");
355  quit(10);
356  }
357  if ((fps < 0) || (fps > 1000)) {
359  "The -fps option must be in range from 1 to 1000, default is 12.\n");
360  quit(10);
361  }
362  argv += 2;
363  argc -= 2;
364  } else {
366  "The -fps option requires an argument [from 1 to 1000], default is 12.\n");
367  quit(10);
368  }
369  } else if (strcmp(argv[1], "-nodelay") == 0) {
370  nodelay = 1;
371  argv += 1;
372  argc -= 1;
373  } else if (strcmp(argv[1], "-scale") == 0) {
374  if (argv[2]) {
375  scale = atoi(argv[2]);
376  if (scale == 0) {
378  "The -scale option requires an argument [from 1 to 50], default is 5.\n");
379  quit(10);
380  }
381  if ((scale < 0) || (scale > 50)) {
383  "The -scale option must be in range from 1 to 50, default is 5.\n");
384  quit(10);
385  }
386  argv += 2;
387  argc -= 2;
388  } else {
390  "The -fps option requires an argument [from 1 to 1000], default is 12.\n");
391  quit(10);
392  }
393  } else if ((strcmp(argv[1], "-help") == 0)
394  || (strcmp(argv[1], "-h") == 0)) {
395  PrintUsage(argv[0]);
396  quit(0);
397  } else {
398  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unrecognized option: %s.\n", argv[1]);
399  quit(10);
400  }
401  break;
402  }
403 
404  RawMooseData = (Uint8 *) malloc(MOOSEFRAME_SIZE * MOOSEFRAMES_COUNT);
405  if (RawMooseData == NULL) {
406  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Can't allocate memory for movie !\n");
407  free(RawMooseData);
408  quit(1);
409  }
410 
411  /* load the trojan moose images */
412  handle = SDL_RWFromFile("moose.dat", "rb");
413  if (handle == NULL) {
414  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Can't find the file moose.dat !\n");
415  free(RawMooseData);
416  quit(2);
417  }
418 
419  SDL_RWread(handle, RawMooseData, MOOSEFRAME_SIZE, MOOSEFRAMES_COUNT);
420 
421  SDL_RWclose(handle);
422 
423  /* Create the window and renderer */
426  window = SDL_CreateWindow("Happy Moose",
431  if (!window) {
432  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create window: %s\n", SDL_GetError());
433  free(RawMooseData);
434  quit(4);
435  }
436 
437  renderer = SDL_CreateRenderer(window, -1, 0);
438  if (!renderer) {
439  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create renderer: %s\n", SDL_GetError());
440  free(RawMooseData);
441  quit(4);
442  }
443 
445  if (!MooseTexture) {
446  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create texture: %s\n", SDL_GetError());
447  free(RawMooseData);
448  quit(5);
449  }
450  /* Uncomment this to check vertex color with a YUV texture */
451  /* SDL_SetTextureColorMod(MooseTexture, 0xff, 0x80, 0x80); */
452 
453  for (i = 0; i < MOOSEFRAMES_COUNT; i++) {
454  Uint8 MooseFrameRGB[MOOSEFRAME_SIZE*3];
455  Uint8 *rgb;
456  Uint8 *frame;
457 
458  rgb = MooseFrameRGB;
459  frame = RawMooseData + i * MOOSEFRAME_SIZE;
460  for (j = 0; j < MOOSEFRAME_SIZE; ++j) {
461  rgb[0] = MooseColors[frame[j]].r;
462  rgb[1] = MooseColors[frame[j]].g;
463  rgb[2] = MooseColors[frame[j]].b;
464  rgb += 3;
465  }
466  switch (pixel_format) {
468  ConvertRGBtoYV12(MooseFrameRGB, MooseFrame[i], MOOSEPIC_W, MOOSEPIC_H, 0, 100);
469  break;
471  ConvertRGBtoNV12(MooseFrameRGB, MooseFrame[i], MOOSEPIC_W, MOOSEPIC_H, 0, 100);
472  break;
473  default:
474  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unsupported pixel format\n");
475  break;
476  }
477  }
478 
479  free(RawMooseData);
480 
481  /* set the start frame */
482  i = 0;
483  if (nodelay) {
484  fpsdelay = 0;
485  } else {
486  fpsdelay = 1000 / fps;
487  }
488 
489  displayrect.x = 0;
490  displayrect.y = 0;
493 
494  /* Ignore key up events, they don't even get filtered */
496 
497  /* Loop, waiting for QUIT or RESIZE */
498 #ifdef __EMSCRIPTEN__
499  emscripten_set_main_loop(loop, nodelay ? 0 : fps, 1);
500 #else
501  while (!done) {
502  loop();
503  }
504 #endif
505 
507  quit(0);
508  return 0;
509 }
#define SDL_CreateTexture
GLenum GLenum GLenum GLenum GLenum scale
#define MOOSEPIC_W
Definition: testoverlay2.c:29
void loop()
Definition: testoverlay2.c:266
#define SDL_GetError
Uint8 g
Definition: SDL_pixels.h:296
void ConvertRGBtoNV12(Uint8 *rgb, Uint8 *out, int w, int h, int monochrome, int luminance)
Definition: testoverlay2.c:226
static void quit(int rc)
Definition: testoverlay2.c:157
#define MOOSEFRAME_SIZE
Definition: testoverlay2.c:32
SDL_EventEntry * free
Definition: SDL_events.c:81
SDL_Texture * MooseTexture
Definition: testoverlay2.c:143
SDL_bool done
Definition: testoverlay2.c:151
#define SDL_RWread(ctx, ptr, size, n)
Definition: SDL_rwops.h:187
Uint8 b
Definition: SDL_pixels.h:297
#define SDL_CreateWindow
#define SDL_WINDOWPOS_UNDEFINED
Definition: SDL_video.h:127
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:159
#define SDL_LogError
#define MOOSEPIC_H
Definition: testoverlay2.c:30
Uint8 MooseFrame[MOOSEFRAMES_COUNT][MOOSEFRAME_SIZE *2]
Definition: testoverlay2.c:142
#define SDL_RWFromFile
SDL_Renderer * renderer
Definition: testoverlay2.c:148
#define MOOSEFRAMES_COUNT
Definition: testoverlay2.c:33
Uint8 r
Definition: SDL_pixels.h:295
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:143
int frame
Definition: teststreaming.c:60
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int int in j)
Definition: SDL_x11sym.h:50
int fpsdelay
Definition: testoverlay2.c:153
int x
Definition: SDL_rect.h:66
int w
Definition: SDL_rect.h:67
#define SDL_LogSetPriority
#define NULL
Definition: begin_code.h:143
#define malloc
Definition: SDL_malloc.c:641
#define SDL_RWclose(ctx)
Definition: SDL_rwops.h:189
int h
Definition: SDL_rect.h:67
The type used to identify a window.
Definition: SDL_sysvideo.h:71
#define SDL_EventState
SDL_Window * window
Definition: testoverlay2.c:147
int window_h
Definition: testoverlay2.c:146
int i
Definition: testoverlay2.c:150
SDL_Color MooseColors[84]
Definition: testoverlay2.c:35
Uint32 pixel_format
Definition: testoverlay2.c:152
#define SDL_Init
SDL_Rect displayrect
Definition: testoverlay2.c:144
#define SDL_DestroyRenderer
static void PrintUsage(char *argv0)
Definition: testoverlay2.c:249
int y
Definition: SDL_rect.h:66
int window_w
Definition: testoverlay2.c:145
#define SDL_INIT_VIDEO
Definition: SDL.h:77
#define SDL_CreateRenderer
#define SDL_IGNORE
Definition: SDL_events.h:720
void ConvertRGBtoYV12(Uint8 *rgb, Uint8 *out, int w, int h, int monochrome, int luminance)
Definition: testoverlay2.c:202

§ PrintUsage()

static void PrintUsage ( char *  argv0)
static

Definition at line 249 of file testoverlay2.c.

References SDL_Log.

Referenced by main().

250 {
251  SDL_Log("Usage: %s [arg] [arg] [arg] ...\n", argv0);
252  SDL_Log("\n");
253  SDL_Log("Where 'arg' is any of the following options:\n");
254  SDL_Log("\n");
255  SDL_Log(" -fps <frames per second>\n");
256  SDL_Log(" -nodelay\n");
257  SDL_Log(" -format <fmt> (one of the: YV12, IYUV, YUY2, UYVY, YVYU)\n");
258  SDL_Log(" -scale <scale factor> (initial scale of the overlay)\n");
259  SDL_Log(" -help (shows this help)\n");
260  SDL_Log("\n");
261  SDL_Log("Press ESC to exit, or SPACE to freeze the movie while application running.\n");
262  SDL_Log("\n");
263 }
#define SDL_Log

§ quit()

static void quit ( int  rc)
static

Definition at line 157 of file testoverlay2.c.

References SDL_Quit.

Referenced by main().

158 {
159  SDL_Quit();
160  exit(rc);
161 }
#define SDL_Quit

§ RGBtoYUV()

void RGBtoYUV ( Uint8 rgb,
int *  yuv,
int  monochrome,
int  luminance 
)

Definition at line 170 of file testoverlay2.c.

Referenced by ConvertRGBtoNV12(), and ConvertRGBtoYV12().

171 {
172  if (monochrome) {
173 #if 1 /* these are the two formulas that I found on the FourCC site... */
174  yuv[0] = (int)(0.299 * rgb[0] + 0.587 * rgb[1] + 0.114 * rgb[2]);
175  yuv[1] = 128;
176  yuv[2] = 128;
177 #else
178  yuv[0] = (int)(0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16;
179  yuv[1] = 128;
180  yuv[2] = 128;
181 #endif
182  } else {
183 #if 1 /* these are the two formulas that I found on the FourCC site... */
184  yuv[0] = (int)(0.299 * rgb[0] + 0.587 * rgb[1] + 0.114 * rgb[2]);
185  yuv[1] = (int)((rgb[2] - yuv[0]) * 0.565 + 128);
186  yuv[2] = (int)((rgb[0] - yuv[0]) * 0.713 + 128);
187 #else
188  yuv[0] = (0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16;
189  yuv[1] = 128 - (0.148 * rgb[0]) - (0.291 * rgb[1]) + (0.439 * rgb[2]);
190  yuv[2] = 128 + (0.439 * rgb[0]) - (0.368 * rgb[1]) - (0.071 * rgb[2]);
191 #endif
192  }
193 
194  if (luminance != 100) {
195  yuv[0] = yuv[0] * luminance / 100;
196  if (yuv[0] > 255)
197  yuv[0] = 255;
198  }
199 }

Variable Documentation

§ displayrect

SDL_Rect displayrect

Definition at line 144 of file testoverlay2.c.

§ done

Definition at line 151 of file testoverlay2.c.

Referenced by loop(), and main().

§ fpsdelay

int fpsdelay

Definition at line 153 of file testoverlay2.c.

Referenced by loop(), and main().

§ i

int i

Definition at line 150 of file testoverlay2.c.

Referenced by loop(), and main().

§ MooseColors

SDL_Color MooseColors[84]

Definition at line 35 of file testoverlay2.c.

§ MooseFrame

Definition at line 142 of file testoverlay2.c.

Referenced by loop(), and main().

§ MooseTexture

SDL_Texture* MooseTexture

Definition at line 143 of file testoverlay2.c.

§ paused

int paused = 0

Definition at line 149 of file testoverlay2.c.

Referenced by loop().

§ pixel_format

Uint32 pixel_format = SDL_PIXELFORMAT_YV12

Definition at line 152 of file testoverlay2.c.

Referenced by loop(), main(), and SDL_InitFormat().

§ renderer

SDL_Renderer* renderer

Definition at line 148 of file testoverlay2.c.

§ window

SDL_Window* window

Definition at line 147 of file testoverlay2.c.

Referenced by main().

§ window_h

int window_h

Definition at line 146 of file testoverlay2.c.

Referenced by loop(), main(), and MoveSprites().

§ window_w

int window_w

Definition at line 145 of file testoverlay2.c.

Referenced by loop(), main(), and MoveSprites().