int main(int argc, char *argv[]){ Camera *camera; GPContext *context = gp_context_new(); int retval; CameraEventType evttype; void *evtdata; CameraFile *file; gp_camera_new(&camera); retval = gp_camera_init(camera, context); if(retval != GP_OK) { printf("Error: %s\n", gp_result_as_string(retval)); return 1; } do { retval = gp_camera_wait_for_event (camera, 10, &evttype, &evtdata, context); } while ((retval == GP_OK) && (evttype != GP_EVENT_TIMEOUT)); retval = gp_file_new(&file); if (retval != GP_OK) { printf("gp_file_new: %d\n", retval); return 1; } /*retval = gp_camera_capture_preview(camera, file, context); */ if (retval != GP_OK) { printf("gp_camera_capture_preview: %d\n", retval); return 1; } gp_file_free (file); if(argc == 1) { retval = camera_auto_focus(camera, context); if(retval != GP_OK) { printf("Error: %s\n", gp_result_as_string(retval)); return 1; } } else if(argc == 2) { int value = atoi(argv[1]); retval = camera_manual_focus(camera, value, context); if(retval != GP_OK) { printf("Error: %s\n", gp_result_as_string(retval)); return 1; } } do { retval = gp_camera_wait_for_event (camera, 10, &evttype, &evtdata, context); } while ((retval == GP_OK) && (evttype != GP_EVENT_TIMEOUT)); gp_camera_exit(camera, context); return 0; }
int main(int argc, char **argv) { Camera *canon; int i, retval; GPContext *canoncontext = sample_create_context(); gp_log_add_func(GP_LOG_ERROR, errordumper, 0); gp_camera_new(&canon); /* When I set GP_LOG_DEBUG instead of GP_LOG_ERROR above, I noticed that the * init function seems to traverse the entire filesystem on the camera. This * is partly why it takes so long. * (Marcus: the ptp2 driver does this by default currently.) */ printf("Camera init. Takes about 10 seconds.\n"); retval = gp_camera_init(canon, canoncontext); if (retval != GP_OK) { printf(" Retval: %d\n", retval); exit (1); } canon_enable_capture(canon, TRUE, canoncontext); retval = camera_eosviewfinder(canon,canoncontext,1); if (retval != GP_OK) { fprintf(stderr,"camera_eosviewfinder(1): %d\n", retval); exit(1); } /*set_capturetarget(canon, canoncontext);*/ printf("Taking 100 previews and saving them to snapshot-XXX.jpg ...\n"); for (i=0;i<100;i++) { CameraFile *file; char output_file[32]; fprintf(stderr,"preview %d\n", i); retval = gp_file_new(&file); if (retval != GP_OK) { fprintf(stderr,"gp_file_new: %d\n", retval); exit(1); } /* autofocus every 10 shots */ if (i%10 == 9) { camera_auto_focus (canon, canoncontext, 1); /* FIXME: wait a bit and/or poll events ? */ camera_auto_focus (canon, canoncontext, 0); } else { camera_manual_focus (canon, (i/10-5)/2, canoncontext); } #if 0 /* testcase for EOS zooming */ { char buf[20]; if (i<10) set_config_value_string (canon, "eoszoom", "5", canoncontext); sprintf(buf,"%d,%d",(i&0x1f)*64,(i>>5)*64); fprintf(stderr, "%d - %s\n", i, buf); set_config_value_string (canon, "eoszoomposition", buf, canoncontext); } #endif retval = gp_camera_capture_preview(canon, file, canoncontext); if (retval != GP_OK) { fprintf(stderr,"gp_camera_capture_preview(%d): %d\n", i, retval); exit(1); } sprintf(output_file, "snapshot-%03d.jpg", i); retval = gp_file_save(file, output_file); if (retval != GP_OK) { fprintf(stderr,"gp_camera_capture_preview(%d): %d\n", i, retval); exit(1); } gp_file_unref(file); /* sprintf(output_file, "image-%03d.jpg", i); capture_to_file(canon, canoncontext, output_file); */ } retval = camera_eosviewfinder(canon,canoncontext,0); if (retval != GP_OK) { fprintf(stderr,"camera_eosviewfinder(0): %d\n", retval); exit(1); } sleep(10); gp_camera_exit(canon, canoncontext); return 0; }