int main( int argc, char** argv ) {
FILE *fp;
FILE *p_return_file;
read_error_code_t error_reading;
image_t image_info;
image_t image_info_copy;
image_t image_info_copy2;
image_info.data = 0;
fp = fopen("test.bmp", "rb" );
p_return_file= fopen("test1.bmp", "wb" );
error_reading = from_bmp(fp, &image_info);
handle_error(error_reading);
if(error_reading !=0) {
abort();
}
copy_image_t(fp, &image_info_copy);
copy_image_t(fp, &image_info_copy2);
rotate(&image_info, &image_info_copy);
rotate(&image_info_copy, &image_info_copy2);
to_bmp(p_return_file, &image_info_copy2);
if (image_info.data != 0) {
free(image_info.data);
image_info.data = 0;
}
fclose(p_return_file);
return 0;
}
int main(int argc, char *argv[])
{
SDL_Surface *screen=NULL;
SDL_Surface *backbuffer=NULL;
/* color palette for grayscale images */
SDL_Color grayscale_palette[256];
SDL_Event event;
const SDL_VideoInfo *vidinfo=NULL;
int colordepth;
char winname[1024];
int quit_flag=0;
int bpp;
image_t *img=NULL;
image_t oldimg={"",0,0,0,0,NULL};
unsigned long ts=0;
char *varname=NULL;
char filename[1024];
char iconname[1024];
int swaprgb=0;
unsigned int rmask,gmask,bmask,amask;
int i;
/* initialize the grayscale palette */
for (i=0;i<256;i++)
{
grayscale_palette[i].r=i;
grayscale_palette[i].g=i;
grayscale_palette[i].b=i;
grayscale_palette[i].unused=0;
}
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
#else
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
#endif
if (argc<2)
{
fprintf(stdout,"%s <mvth variable name>\n",argv[0]);
return EXIT_FAILURE;
}
else if (argc==2 && strcmp(argv[1],"-h")==0)
{
fprintf(stdout,"%s [-hs] <mvth variable name>\n",argv[0]);
fprintf(stdout," -h print this help");
fprintf(stdout," -s swap rgb");
return EXIT_SUCCESS;
}
else if (argc==2) varname=strdup(argv[1]);
else if (argc==3) varname=strdup(argv[2]);
if (argc==3 && strcmp(argv[1],"-s")==0) swaprgb=1;
if (swaprgb)
{
int tmp;
tmp=bmask;
bmask=rmask;
rmask=tmp;
}
if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER)<0)
{
fprintf(stderr,"Unable to initialize SDL: %s\n",SDL_GetError());
return EXIT_FAILURE;
}
atexit(SDL_Quit);
vidinfo=SDL_GetVideoInfo();
colordepth=vidinfo->vfmt->BitsPerPixel;
fprintf(stderr,"Got colordepth=%d\n",colordepth);
screen=SDL_SetVideoMode(256,256,colordepth,SDL_SWSURFACE);
if (screen==NULL)
{
fprintf(stderr,"Unable to 256x256 video: %s\n",SDL_GetError());
exit(1);
}
backbuffer=SDL_CreateRGBSurface(SDL_SWSURFACE,
256,256,4*8,rmask,gmask,bmask,0);
bpp=screen->format->BytesPerPixel;
fprintf(stderr,"Got Bpp=%d\n",bpp);
char *env;
char *user;
/* a number was specified, and we should construct the path
* to the file */
sprintf(winname,"Image \"%s\"",varname);
sprintf(iconname,"\"%s\"",varname);
env=getenv("USER");
if (env==NULL)
{
fprintf(stderr,"Problem determining username.\n");
return EXIT_FAILURE;
}
user=strdup(env);
snprintf(filename,1024,"/tmp/mvth.mmap_%s/mmap_%s",user,varname);
fprintf(stderr,"Using file \"%s\".\n",filename);
free(user);
free(varname);
SDL_WM_SetCaption(winname,iconname);
while (quit_flag==0)
{
while (SDL_PollEvent(&event))
{
switch(event.type)
{
case SDL_QUIT:
quit_flag=1;
break;
}
}
/* see if we have a new image */
int ret=readmmap(filename,&ts,&img);
if (ret==0)
{
if (oldimg.data!=NULL)
{
free(oldimg.data);
oldimg.data=NULL;
}
copy_image_t(img,&oldimg);
/********************
* Do we need to reconfigure the window and back buffer?
*********************/
if (oldimg.w!=screen->w || oldimg.h!=screen->h)
{
SDL_FreeSurface(backbuffer);
backbuffer=SDL_CreateRGBSurface(SDL_SWSURFACE,
oldimg.w,oldimg.h,4*8,rmask,gmask,bmask,0);
if (backbuffer==NULL)
{
fprintf(stderr,"Error allocating back buffer.\n");
exit(1);
}
/* we need to reconfigure the window */
screen=SDL_SetVideoMode(oldimg.w,oldimg.h,colordepth,SDL_SWSURFACE);
if (screen==NULL)
{
fprintf(stderr,"Unable to %dx%d: %s\n",oldimg.w,oldimg.h,SDL_GetError());
exit(1);
}
SDL_WM_SetCaption(winname,iconname);
}
if (oldimg.bands==3 || oldimg.bands==4) {
int i;
unsigned char *data=oldimg.data;
unsigned char *pixels=backbuffer->pixels;
for (i=0;i<oldimg.w*oldimg.h;i++) {
*pixels++=*data++;
*pixels++=*data++;
*pixels++=*data++;
*pixels++=0;
}
SDL_SetAlpha(backbuffer,0,255);
} else {
int i;
unsigned char *data=oldimg.data;
unsigned char *pixels=backbuffer->pixels;
for (i=0;i<oldimg.w*oldimg.h;i++)
{
*pixels++=*data;
*pixels++=*data;
*pixels++=*data;
*pixels++=0;
data++;
}
SDL_SetColors(backbuffer,grayscale_palette,0,256);
SDL_SetColors(screen,grayscale_palette,0,256);
}
/* draw the image */
SDL_BlitSurface(backbuffer,NULL,screen,NULL);
SDL_UpdateRect(screen,0,0,screen->w,screen->h);
}
SDL_Delay(20); /* max of 50fps */
}
SDL_Quit();
fprintf(stderr,"\n");
return EXIT_SUCCESS;
}
