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testoverlay2.c
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/********************************************************************************
* *
* Test of the overlay used for moved pictures, test more closed to real life. *
* Running trojan moose :) Coded by Mike Gorchak. *
* *
********************************************************************************/
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
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#include "SDL.h"
#define MOOSEPIC_W 64
#define MOOSEPIC_H 88
#define MOOSEFRAME_SIZE (MOOSEPIC_W * MOOSEPIC_H)
#define MOOSEFRAMES_COUNT 10
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SDL_Color MooseColors[84] = {
{49, 49, 49}
, {66, 24, 0}
, {66, 33, 0}
, {66, 66, 66}
,
{66, 115, 49}
, {74, 33, 0}
, {74, 41, 16}
, {82, 33, 8}
,
{82, 41, 8}
, {82, 49, 16}
, {82, 82, 82}
, {90, 41, 8}
,
{90, 41, 16}
, {90, 57, 24}
, {99, 49, 16}
, {99, 66, 24}
,
{99, 66, 33}
, {99, 74, 33}
, {107, 57, 24}
, {107, 82, 41}
,
{115, 57, 33}
, {115, 66, 33}
, {115, 66, 41}
, {115, 74, 0}
,
{115, 90, 49}
, {115, 115, 115}
, {123, 82, 0}
, {123, 99, 57}
,
{132, 66, 41}
, {132, 74, 41}
, {132, 90, 8}
, {132, 99, 33}
,
{132, 99, 66}
, {132, 107, 66}
, {140, 74, 49}
, {140, 99, 16}
,
{140, 107, 74}
, {140, 115, 74}
, {148, 107, 24}
, {148, 115, 82}
,
{148, 123, 74}
, {148, 123, 90}
, {156, 115, 33}
, {156, 115, 90}
,
{156, 123, 82}
, {156, 132, 82}
, {156, 132, 99}
, {156, 156, 156}
,
{165, 123, 49}
, {165, 123, 90}
, {165, 132, 82}
, {165, 132, 90}
,
{165, 132, 99}
, {165, 140, 90}
, {173, 132, 57}
, {173, 132, 99}
,
{173, 140, 107}
, {173, 140, 115}
, {173, 148, 99}
, {173, 173, 173}
,
{181, 140, 74}
, {181, 148, 115}
, {181, 148, 123}
, {181, 156, 107}
,
{189, 148, 123}
, {189, 156, 82}
, {189, 156, 123}
, {189, 156, 132}
,
{189, 189, 189}
, {198, 156, 123}
, {198, 165, 132}
, {206, 165, 99}
,
{206, 165, 132}
, {206, 173, 140}
, {206, 206, 206}
, {214, 173, 115}
,
{214, 173, 140}
, {222, 181, 148}
, {222, 189, 132}
, {222, 189, 156}
,
{222, 222, 222}
, {231, 198, 165}
, {231, 231, 231}
, {239, 206, 173}
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};
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/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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static void
quit (int rc)
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{
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SDL_Quit ();
exit (rc);
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}
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/* All RGB2YUV conversion code and some other parts of code has been taken from testoverlay.c */
/* NOTE: These RGB conversion functions are not intended for speed,
only as examples.
*/
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void
RGBtoYUV (Uint8 * rgb, int *yuv, int monochrome, int luminance)
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{
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if (monochrome) {
#if 1 /* these are the two formulas that I found on the FourCC site... */
yuv[0] = 0.299 * rgb[0] + 0.587 * rgb[1] + 0.114 * rgb[2];
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yuv[1] = 128;
yuv[2] = 128;
#else
yuv[0] = (0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16;
yuv[1] = 128;
yuv[2] = 128;
#endif
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} else {
#if 1 /* these are the two formulas that I found on the FourCC site... */
yuv[0] = 0.299 * rgb[0] + 0.587 * rgb[1] + 0.114 * rgb[2];
yuv[1] = (rgb[2] - yuv[0]) * 0.565 + 128;
yuv[2] = (rgb[0] - yuv[0]) * 0.713 + 128;
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#else
yuv[0] = (0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16;
yuv[1] = 128 - (0.148 * rgb[0]) - (0.291 * rgb[1]) + (0.439 * rgb[2]);
yuv[2] = 128 + (0.439 * rgb[0]) - (0.368 * rgb[1]) - (0.071 * rgb[2]);
#endif
}
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if (luminance != 100) {
yuv[0] = yuv[0] * luminance / 100;
if (yuv[0] > 255)
yuv[0] = 255;
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}
}
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void
ConvertRGBtoYV12 (SDL_Surface * s, SDL_Overlay * o, int monochrome,
int luminance)
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{
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int x, y;
int yuv[3];
Uint8 *p, *op[3];
SDL_LockSurface (s);
SDL_LockYUVOverlay (o);
/* Convert */
for (y = 0; y < s->h && y < o->h; y++) {
p = ((Uint8 *) s->pixels) + s->pitch * y;
op[0] = o->pixels[0] + o->pitches[0] * y;
op[1] = o->pixels[1] + o->pitches[1] * (y / 2);
op[2] = o->pixels[2] + o->pitches[2] * (y / 2);
for (x = 0; x < s->w && x < o->w; x++) {
RGBtoYUV (p, yuv, monochrome, luminance);
*(op[0]++) = yuv[0];
if (x % 2 == 0 && y % 2 == 0) {
*(op[1]++) = yuv[2];
*(op[2]++) = yuv[1];
}
p += s->format->BytesPerPixel;
}
}
SDL_UnlockYUVOverlay (o);
SDL_UnlockSurface (s);
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}
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void
ConvertRGBtoIYUV (SDL_Surface * s, SDL_Overlay * o, int monochrome,
int luminance)
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{
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int x, y;
int yuv[3];
Uint8 *p, *op[3];
SDL_LockSurface (s);
SDL_LockYUVOverlay (o);
/* Convert */
for (y = 0; y < s->h && y < o->h; y++) {
p = ((Uint8 *) s->pixels) + s->pitch * y;
op[0] = o->pixels[0] + o->pitches[0] * y;
op[1] = o->pixels[1] + o->pitches[1] * (y / 2);
op[2] = o->pixels[2] + o->pitches[2] * (y / 2);
for (x = 0; x < s->w && x < o->w; x++) {
RGBtoYUV (p, yuv, monochrome, luminance);
*(op[0]++) = yuv[0];
if (x % 2 == 0 && y % 2 == 0) {
*(op[1]++) = yuv[1];
*(op[2]++) = yuv[2];
}
p += s->format->BytesPerPixel;
}
}
SDL_UnlockYUVOverlay (o);
SDL_UnlockSurface (s);
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}
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void
ConvertRGBtoUYVY (SDL_Surface * s, SDL_Overlay * o, int monochrome,
int luminance)
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{
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int x, y;
int yuv[3];
Uint8 *p, *op;
SDL_LockSurface (s);
SDL_LockYUVOverlay (o);
for (y = 0; y < s->h && y < o->h; y++) {
p = ((Uint8 *) s->pixels) + s->pitch * y;
op = o->pixels[0] + o->pitches[0] * y;
for (x = 0; x < s->w && x < o->w; x++) {
RGBtoYUV (p, yuv, monochrome, luminance);
if (x % 2 == 0) {
*(op++) = yuv[1];
*(op++) = yuv[0];
*(op++) = yuv[2];
} else
*(op++) = yuv[0];
p += s->format->BytesPerPixel;
}
}
SDL_UnlockYUVOverlay (o);
SDL_UnlockSurface (s);
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}
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void
ConvertRGBtoYVYU (SDL_Surface * s, SDL_Overlay * o, int monochrome,
int luminance)
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{
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int x, y;
int yuv[3];
Uint8 *p, *op;
SDL_LockSurface (s);
SDL_LockYUVOverlay (o);
for (y = 0; y < s->h && y < o->h; y++) {
p = ((Uint8 *) s->pixels) + s->pitch * y;
op = o->pixels[0] + o->pitches[0] * y;
for (x = 0; x < s->w && x < o->w; x++) {
RGBtoYUV (p, yuv, monochrome, luminance);
if (x % 2 == 0) {
*(op++) = yuv[0];
*(op++) = yuv[2];
op[1] = yuv[1];
} else {
*op = yuv[0];
op += 2;
}
p += s->format->BytesPerPixel;
}
}
SDL_UnlockYUVOverlay (o);
SDL_UnlockSurface (s);
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}
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void
ConvertRGBtoYUY2 (SDL_Surface * s, SDL_Overlay * o, int monochrome,
int luminance)
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{
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int x, y;
int yuv[3];
Uint8 *p, *op;
SDL_LockSurface (s);
SDL_LockYUVOverlay (o);
for (y = 0; y < s->h && y < o->h; y++) {
p = ((Uint8 *) s->pixels) + s->pitch * y;
op = o->pixels[0] + o->pitches[0] * y;
for (x = 0; x < s->w && x < o->w; x++) {
RGBtoYUV (p, yuv, monochrome, luminance);
if (x % 2 == 0) {
*(op++) = yuv[0];
*(op++) = yuv[1];
op[1] = yuv[2];
} else {
*op = yuv[0];
op += 2;
}
p += s->format->BytesPerPixel;
}
}
SDL_UnlockYUVOverlay (o);
SDL_UnlockSurface (s);
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}
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static void
PrintUsage (char *argv0)
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{
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fprintf (stderr, "Usage: %s [arg] [arg] [arg] ...\n", argv0);
fprintf (stderr, "\n");
fprintf (stderr, "Where 'arg' is any of the following options:\n");
fprintf (stderr, "\n");
fprintf (stderr, " -fps <frames per second>\n");
fprintf (stderr,
" -format <fmt> (one of the: YV12, IYUV, YUY2, UYVY, YVYU)\n");
fprintf (stderr,
" -scale <scale factor> (initial scale of the overlay)\n");
fprintf (stderr, " -help (shows this help)\n");
fprintf (stderr, "\n");
fprintf (stderr,
"Press ESC to exit, or SPACE to freeze the movie while application running.\n");
fprintf (stderr, "\n");
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}
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int
main (int argc, char **argv)
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{
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Uint8 *RawMooseData;
SDL_RWops *handle;
SDL_Surface *screen;
SDL_Surface *MooseFrame[MOOSEFRAMES_COUNT];
SDL_Overlay *overlay;
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SDL_Rect overlayrect;
SDL_Event event;
Uint32 lastftick;
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int paused = 0;
int resized = 0;
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int i;
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int fps = 12;
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int fpsdelay;
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int overlay_format = SDL_YUY2_OVERLAY;
int scale = 5;
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if (SDL_Init (SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
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return 3;
}
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while (argc > 1) {
if (strcmp (argv[1], "-fps") == 0) {
if (argv[2]) {
fps = atoi (argv[2]);
if (fps == 0) {
fprintf (stderr,
"The -fps option requires an argument [from 1 to 1000], default is 12.\n");
quit (10);
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}
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if ((fps < 0) || (fps > 1000)) {
fprintf (stderr,
"The -fps option must be in range from 1 to 1000, default is 12.\n");
quit (10);
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}
argv += 2;
argc -= 2;
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} else {
fprintf (stderr,
"The -fps option requires an argument [from 1 to 1000], default is 12.\n");
quit (10);
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}
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} else if (strcmp (argv[1], "-format") == 0) {
if (argv[2]) {
if (!strcmp (argv[2], "YV12"))
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overlay_format = SDL_YV12_OVERLAY;
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else if (!strcmp (argv[2], "IYUV"))
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overlay_format = SDL_IYUV_OVERLAY;
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else if (!strcmp (argv[2], "YUY2"))
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overlay_format = SDL_YUY2_OVERLAY;
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else if (!strcmp (argv[2], "UYVY"))
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overlay_format = SDL_UYVY_OVERLAY;
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else if (!strcmp (argv[2], "YVYU"))
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overlay_format = SDL_YVYU_OVERLAY;
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else {
fprintf (stderr,
"The -format option %s is not recognized, see help for info.\n",
argv[2]);
quit (10);
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}
argv += 2;
argc -= 2;
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} else {
fprintf (stderr,
"The -format option requires an argument, default is YUY2.\n");
quit (10);
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}
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} else if (strcmp (argv[1], "-scale") == 0) {
if (argv[2]) {
scale = atoi (argv[2]);
if (scale == 0) {
fprintf (stderr,
"The -scale option requires an argument [from 1 to 50], default is 5.\n");
quit (10);
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}
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if ((scale < 0) || (scale > 50)) {
fprintf (stderr,
"The -scale option must be in range from 1 to 50, default is 5.\n");
quit (10);
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}
argv += 2;
argc -= 2;
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} else {
fprintf (stderr,
"The -fps option requires an argument [from 1 to 1000], default is 12.\n");
quit (10);
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}
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} else if ((strcmp (argv[1], "-help") == 0)
|| (strcmp (argv[1], "-h") == 0)) {
PrintUsage (argv[0]);
quit (0);
} else {
fprintf (stderr, "Unrecognized option: %s.\n", argv[1]);
quit (10);
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}
break;
}
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RawMooseData = (Uint8 *) malloc (MOOSEFRAME_SIZE * MOOSEFRAMES_COUNT);
if (RawMooseData == NULL) {
fprintf (stderr, "Can't allocate memory for movie !\n");
free (RawMooseData);
quit (1);
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}
/* load the trojan moose images */
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handle = SDL_RWFromFile ("moose.dat", "rb");
if (handle == NULL) {
fprintf (stderr, "Can't find the file moose.dat !\n");
free (RawMooseData);
quit (2);
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}
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SDL_RWread (handle, RawMooseData, MOOSEFRAME_SIZE, MOOSEFRAMES_COUNT);
SDL_RWclose (handle);
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/* Set video mode */
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if ((screen =
SDL_SetVideoMode (MOOSEPIC_W * scale, MOOSEPIC_H * scale, 0,
SDL_RESIZABLE | SDL_SWSURFACE)) == NULL) {
fprintf (stderr, "Couldn't set video mode: %s\n", SDL_GetError ());
free (RawMooseData);
quit (4);
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}
/* Set the window manager title bar */
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SDL_WM_SetCaption ("SDL test overlay: running moose", "testoverlay2");
for (i = 0; i < MOOSEFRAMES_COUNT; i++) {
MooseFrame[i] =
SDL_CreateRGBSurfaceFrom (RawMooseData + i * MOOSEFRAME_SIZE,
MOOSEPIC_W, MOOSEPIC_H, 8, MOOSEPIC_W,
0, 0, 0, 0);
if (MooseFrame[i] == NULL) {
fprintf (stderr, "Couldn't create SDL_Surfaces:%s\n",
SDL_GetError ());
free (RawMooseData);
quit (5);
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}
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SDL_SetColors (MooseFrame[i], MooseColors, 0, 84);
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{
SDL_Surface *newsurf;
SDL_PixelFormat format;
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format.palette = NULL;
format.BitsPerPixel = 32;
format.BytesPerPixel = 4;
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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format.Rshift = 0;
format.Gshift = 8;
format.Bshift = 16;
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#else
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format.Rshift = 24;
format.Gshift = 16;
format.Bshift = 8;
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#endif
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format.Ashift = 0;
format.Rmask = 0xff << format.Rshift;
format.Gmask = 0xff << format.Gshift;
format.Bmask = 0xff << format.Bshift;
format.Amask = 0;
format.Rloss = 0;
format.Gloss = 0;
format.Bloss = 0;
format.Aloss = 8;
format.colorkey = 0;
format.alpha = 0;
newsurf =
SDL_ConvertSurface (MooseFrame[i], &format, SDL_SWSURFACE);
if (!newsurf) {
fprintf (stderr,
"Couldn't convert picture to 32bits RGB: %s\n",
SDL_GetError ());
quit (6);
}
SDL_FreeSurface (MooseFrame[i]);
MooseFrame[i] = newsurf;
}
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}
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free (RawMooseData);
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overlay =
SDL_CreateYUVOverlay (MOOSEPIC_W, MOOSEPIC_H, overlay_format, screen);
if (!overlay) {
fprintf (stderr, "Couldn't create overlay: %s\n", SDL_GetError ());
quit (7);
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}
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printf ("Created %dx%dx%d %s %s overlay\n", overlay->w, overlay->h,
overlay->planes, overlay->hw_overlay ? "hardware" : "software",
overlay->format == SDL_YV12_OVERLAY ? "YV12" : overlay->format ==
SDL_IYUV_OVERLAY ? "IYUV" : overlay->format ==
SDL_YUY2_OVERLAY ? "YUY2" : overlay->format ==
SDL_UYVY_OVERLAY ? "UYVY" : overlay->format ==
SDL_YVYU_OVERLAY ? "YVYU" : "Unknown");
for (i = 0; i < overlay->planes; i++) {
printf (" plane %d: pitch=%d\n", i, overlay->pitches[i]);
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}
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overlayrect.x = 0;
overlayrect.y = 0;
overlayrect.w = MOOSEPIC_W * scale;
overlayrect.h = MOOSEPIC_H * scale;
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/* set the start frame */
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i = 0;
fpsdelay = 1000 / fps;
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/* Ignore key up events, they don't even get filtered */
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SDL_EventState (SDL_KEYUP, SDL_IGNORE);
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lastftick = SDL_GetTicks ();
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/* Loop, waiting for QUIT or RESIZE */
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while (1) {
if (SDL_PollEvent (&event)) {
switch (event.type) {
case SDL_VIDEORESIZE:
screen =
SDL_SetVideoMode (event.resize.w, event.resize.h, 0,
SDL_RESIZABLE | SDL_SWSURFACE);
overlayrect.w = event.resize.w;
overlayrect.h = event.resize.h;
if (paused) {
resized = 1;
}
break;
case SDL_MOUSEBUTTONDOWN:
overlayrect.x = event.button.x - overlayrect.w / 2;
overlayrect.y = event.button.y - overlayrect.h / 2;
break;
case SDL_KEYDOWN:
if (event.key.keysym.sym == SDLK_SPACE) {
paused = !paused;
break;
}
if (event.key.keysym.sym != SDLK_ESCAPE) {
break;
}
case SDL_QUIT:
SDL_FreeYUVOverlay (overlay);
for (i = 0; i < MOOSEFRAMES_COUNT; i++) {
SDL_FreeSurface (MooseFrame[i]);
}
quit (0);
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}
}
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if ((!paused) || (resized)) {
if (((SDL_GetTicks () - lastftick) > fpsdelay) || (resized)) {
lastftick = SDL_GetTicks ();
switch (overlay_format) {
case SDL_YUY2_OVERLAY:
ConvertRGBtoYUY2 (MooseFrame[i], overlay, 0, 100);
break;
case SDL_YV12_OVERLAY:
ConvertRGBtoYV12 (MooseFrame[i], overlay, 0, 100);
break;
case SDL_UYVY_OVERLAY:
ConvertRGBtoUYVY (MooseFrame[i], overlay, 0, 100);
break;
case SDL_YVYU_OVERLAY:
ConvertRGBtoYVYU (MooseFrame[i], overlay, 0, 100);
break;
case SDL_IYUV_OVERLAY:
ConvertRGBtoIYUV (MooseFrame[i], overlay, 0, 100);
break;
630
631
}
632
633
SDL_DisplayYUVOverlay (overlay, &overlayrect);
if (!resized) {
634
i++;
635
636
if (i == 10) {
i = 0;
637
}
638
639
} else {
resized = 0;
640
641
642
643
}
}
}
/* kind of timeslice to OS */
644
SDL_Delay (1);
645
646
}
647
SDL_Quit ();
648
649
return 0;
}