1.1 --- a/src/dosemu/dosemu.c	Mon Sep 23 07:42:56 2013 +0300
     1.2 +++ b/src/dosemu/dosemu.c	Mon Mar 10 17:24:42 2014 +0200
     1.3 @@ -5,6 +5,7 @@
     1.4  #include <stdlib.h>
     1.5  #include <assert.h>
     1.6  #include <SDL.h>
     1.7 +#include <imago2.h>
     1.8  #include "wvga.h"
     1.9  #include "conio.h"
    1.10  #include "mouse.h"
    1.11 @@ -12,6 +13,7 @@
    1.12  #include "timer.h"
    1.13  
    1.14  static void proc_events(void);
    1.15 +static void capture_frame(unsigned char *frame);
    1.16  
    1.17  static void init_sdl()
    1.18  {
    1.19 @@ -29,6 +31,12 @@
    1.20  /* ----- graphics (wvga.c implementation) ----- */
    1.21  static SDL_Surface *fbsurf;
    1.22  static int scale = 3;
    1.23 +static int frames_to_capture;
    1.24 +
    1.25 +static struct {
    1.26 +	unsigned char r, g, b;
    1.27 +} palette[256];
    1.28 +
    1.29  
    1.30  int set_video_mode(int mode)
    1.31  {
    1.32 @@ -99,6 +107,10 @@
    1.33  	if(SDL_SetPalette(fbsurf, SDL_LOGPAL | SDL_PHYSPAL, &col, idx, 1) != 1) {
    1.34  		fprintf(stderr, "set_palette failed to set the required color\n");
    1.35  	}
    1.36 +
    1.37 +	palette[idx].r = r;
    1.38 +	palette[idx].g = g;
    1.39 +	palette[idx].b = b;
    1.40  }
    1.41  
    1.42  void copy_frame(void *pixels)
    1.43 @@ -130,6 +142,10 @@
    1.44  	}
    1.45  	SDL_Flip(fbsurf);
    1.46  
    1.47 +	if(frames_to_capture > 0) {
    1.48 +		capture_frame(pixels);
    1.49 +		--frames_to_capture;
    1.50 +	}
    1.51  
    1.52  	/* also print fps every second ... */
    1.53  	{
    1.54 @@ -150,10 +166,77 @@
    1.55  	}
    1.56  }
    1.57  
    1.58 +#define spin_delay(ms) \
    1.59 +	do { \
    1.60 +		unsigned int end = SDL_GetTicks() + ms; \
    1.61 +		while((prev_msec = SDL_GetTicks()) < end); \
    1.62 +	} while(0)
    1.63 +
    1.64 +#define FRAME_INTERVAL	(1000/70)
    1.65  void wait_vsync(void)
    1.66  {
    1.67 +	static int prev_msec;
    1.68 +	int msec, dt, tleft;
    1.69 +
    1.70 +	msec = SDL_GetTicks();
    1.71 +
    1.72 +	dt = msec - prev_msec;
    1.73 +
    1.74 +	tleft = FRAME_INTERVAL - dt;
    1.75 +	if(tleft > 0) {
    1.76 +		int coarse = tleft & 0xfffffff8;
    1.77 +		tleft = tleft & 7;
    1.78 +
    1.79 +		if(coarse) {
    1.80 +			SDL_Delay(coarse);
    1.81 +		}
    1.82 +		if(tleft) {
    1.83 +			spin_delay(tleft);
    1.84 +		} else {
    1.85 +			prev_msec = SDL_GetTicks();
    1.86 +		}
    1.87 +	} else {
    1.88 +		prev_msec = msec;
    1.89 +	}
    1.90  }
    1.91  
    1.92 +static int cap_count = 0;
    1.93 +void begin_capture(int frames)
    1.94 +{
    1.95 +	frames_to_capture = frames;
    1.96 +}
    1.97 +
    1.98 +void end_capture(void)
    1.99 +{
   1.100 +	cap_count = 0;
   1.101 +	frames_to_capture = 0;
   1.102 +}
   1.103 +
   1.104 +#define NUMPIX	(320 * 200)
   1.105 +static void capture_frame(unsigned char *frame)
   1.106 +{
   1.107 +	static unsigned char rgbpix[NUMPIX * 4];
   1.108 +	char fname[32];
   1.109 +	int i;
   1.110 +	unsigned char *src, *dest;
   1.111 +
   1.112 +	sprintf(fname, "frame%04d.png", cap_count++);
   1.113 +
   1.114 +	src = frame;
   1.115 +	dest = rgbpix;
   1.116 +
   1.117 +	for(i=0; i<NUMPIX; i++) {
   1.118 +		unsigned char c = *src++;
   1.119 +		*dest++ = palette[c].r;
   1.120 +		*dest++ = palette[c].g;
   1.121 +		*dest++ = palette[c].b;
   1.122 +		*dest++ = 255;
   1.123 +	}
   1.124 +
   1.125 +	img_save_pixels(fname, rgbpix, 320, 200, IMG_FMT_RGBA32);
   1.126 +}
   1.127 +
   1.128 +
   1.129  /* ----- event handling (conio.h) ----- */
   1.130  static SDL_Event *keybev;
   1.131  static int mousex, mousey, bnmask;