add pixel PoC

src/poc/pixel.c

@@ -0,0 +1,50 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <notcurses/notcurses.h>
+
+static int
+handle(struct notcurses* nc, const char *fn){
+  struct ncvisual* ncv = ncvisual_from_file(fn);
+  if(ncv == NULL){
+    return -1;
+  }
+  int dimy, dimx;
+  struct ncplane* stdn = notcurses_stddim_yx(nc, &dimy, &dimx);
+  uint64_t channels = CHANNELS_RGB_INITIALIZER(100, 140, 100, 140, 100, 140);
+  ncplane_set_base(stdn, "a", 0, channels);
+  for(int x = 0 ; x < dimx ; ++x){
+    struct ncvisual_options vopts = {
+      .x = x,
+      .scaling = NCSCALE_NONE_HIRES,
+      .blitter = NCBLIT_PIXEL,
+    };
+    struct ncplane* nv = ncvisual_render(nc, ncv, &vopts);
+    if(nv == NULL){
+      ncvisual_destroy(ncv);
+      return -1;
+    }
+    notcurses_render(nc);
+    sleep(1);
+  }
+  ncvisual_destroy(ncv);
+  return 0;
+}
+
+int main(int argc, char** argv){
+  if(argc < 2){
+    fprintf(stderr, "need image arguments\n");
+    return EXIT_FAILURE;
+  }
+  char** a = argv + 1;
+  struct notcurses* nc = notcurses_init(NULL, NULL);
+  if(!notcurses_check_pixel_support(nc)){
+    notcurses_stop(nc);
+    fprintf(stderr, "this program requires pixel graphics support\n");
+    return EXIT_FAILURE;
+  }
+  do{
+    handle(nc, *a);
+  }while(*++a);
+  notcurses_stop(nc);
+  return EXIT_SUCCESS;
+}