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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <string.h>
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4 #include <assert.h>
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5 #include "gfx.h"
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6 #include "image.h"
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7 #include "logger.h"
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8
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9 #include "hwregs.h"
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10 #include "copper.h"
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11
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12
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13 static int proc_event(union gfx_event *ev);
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14 static void show_ham_image(struct ham_image *img);
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15
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16 static int win_width, win_height;
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17
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18 int main(int argc, char **argv)
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19 {
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20 struct ham_image *img;
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21
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22 if(argv[1]) {
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23 if(!(img = load_ham_image(argv[1]))) {
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24 fprintf(stderr, "failed to load image: %s\n", argv[1]);
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25 return 1;
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26 }
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27 } else {
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28 printf("generating test image ...\n");
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29 if(!(img = gen_ham_image(320, 256, 6))) {
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30 fprintf(stderr, "failed to generate image\n");
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31 return 1;
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32 }
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33 }
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34
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35 if(gfx_init(6, GFX_HAM) == -1) {
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36 return 1;
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37 }
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38 gfx_wait_vblank();
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39 show_ham_image(img);
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40
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41 for(;;) {
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42 union gfx_event ev;
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43 if(gfx_next_event(&ev, GFX_EVLOOP_BLOCK)) {
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44 if(proc_event(&ev) == -1) {
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45 break;
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46 }
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47 }
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48 }
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49
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50 gfx_shutdown();
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51 return 0;
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52 }
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53
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54 static int proc_event(union gfx_event *ev)
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55 {
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56 switch(ev->type) {
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57 case GFX_EV_QUIT:
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58 return -1;
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59
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60 case GFX_EV_KEY:
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61 switch(ev->key.key) {
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62 case 27:
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63 return -1;
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64 default:
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65 break;
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66 }
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67 break;
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68
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69 default:
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70 break;
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71 }
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72 return 0;
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73 }
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74
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75 #define NUM_BPL 6
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76 static void show_ham_image(struct ham_image *img)
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77 {
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78 int i, j, k, fbwidth, fbheight, ncolors, prev_line;
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79 unsigned char *fbptr = gfx_get_framebuffer();
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80 struct palchange *chg = img->chglist;
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81
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82 fbwidth = gfx_framebuffer_width();
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83 fbheight = gfx_framebuffer_height();
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84
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85 memcpy(fbptr, img->pixels, fbwidth * fbheight / 8 * NUM_BPL);
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86
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87 /* create copper list that handles the palette */
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88 clear_copper();
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89 gfx_begin_copperlist();
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90 /* initial palette at the start of frame */
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91 for(i=0; i<16; i++) {
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92 add_copper(COPPER_MOVE(REGN_COLOR(i), img->palette[i]));
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93 logmsg("copper palette[%d]: %x\n", i, (unsigned int)img->palette[i]);
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94 }
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95 /* add copper instructions for palette changes according to the image changelist */
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96 prev_line = -1;
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97 while(chg) {
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98 assert(chg->line >= prev_line);
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99 if(chg->line != prev_line) {
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100 prev_line = chg->line;
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101 add_copper(COPPER_VWAIT(chg->line));
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102 }
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103 add_copper(COPPER_MOVE(REGN_COLOR(chg->entry >> 12), chg->entry & 0xfff));
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104 }
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105 add_copper(COPPER_END);
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106 }
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