int main( int argc, char* argv[] ) {
uint8_t buffer[VIDEO_BUFFER_SIZE];
surface_blob blob[256];
int result,frame = 0;
usb_dev_handle* s40 = usb_get_device_handle( ID_MICROSOFT, ID_SURFACE );
surface_init( s40 );
while (1) {
result = surface_get_blobs( s40, blob );
if (result <= 0) continue;
printf("%d blobs\n",result);
for (int i = 0; i < result; i++)
printf(" x: %d y: %d size: %d\n",blob[i].pos_x,blob[i].pos_y,blob[i].area);
if ((frame++ % 60) == 0) printf("status 0x%08x\n",surface_get_status(s40));
}
surface_get_image( s40, buffer );
FILE* foo = fopen("surface.raw","w+");
fwrite(buffer,VIDEO_BUFFER_SIZE,1,foo);
fclose(foo);
}
void display() {
int curtime = glutGet( GLUT_ELAPSED_TIME );
curframe++;
if ((curtime - lasttime) >= 1000) {
fps = (1000.0*(curframe-lastframe))/((double)(curtime-lasttime));
lasttime = curtime;
lastframe = curframe;
snprintf(buffer,sizeof(buffer),"FPS: %f",fps);
printf("%s\n",buffer);
}
// clear buffers
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// move to origin
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0,VIDEO_RES_Y,0);
glScalef(1.0f, -1.0f, 1.0f);
surface_get_image( s40, image );
int bc = surface_get_blobs( s40, blobs );
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture);
glTexImage2D(GL_TEXTURE_2D, 0, 1, VIDEO_RES_X, VIDEO_RES_Y, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, image);
glBegin(GL_TRIANGLE_FAN);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glTexCoord2f(0, 0); glVertex3f(0,0,0);
glTexCoord2f(1, 0); glVertex3f(VIDEO_RES_X,0,0);
glTexCoord2f(1, 1); glVertex3f(VIDEO_RES_X,VIDEO_RES_Y,0);
glTexCoord2f(0, 1); glVertex3f(0,VIDEO_RES_Y,0);
glEnd();
glDisable(GL_TEXTURE_2D);
// green: tip
glColor4f(0.0f, 1.0f, 0.0f, 1.0f);
for (int i = 0; i < bc; i++) cross( blobs[i].pos_x/2, blobs[i].pos_y/2 );
// red: centroid(?)
glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
for (int i = 0; i < bc; i++) cross( blobs[i].ctr_x/2, blobs[i].ctr_y/2 );
// yellow: axis(?)
/*glColor4f(1.0f, 1.0f, 0.0f, 1.0f);
for (int i = 0; i < bc; i++) cross( (blobs[i].pos_x+blobs[i].axis_x)/2, (blobs[i].pos_y+blobs[i].axis_y)/2 );*/
// blue: bbox
glColor4f(0.0f, 0.0f, 1.0f, 1.0f);
for (int i = 0; i < bc; i++) box( blobs[i].bb_pos_x/2, blobs[i].bb_pos_y/2, (blobs[i].bb_pos_x+blobs[i].bb_size_x)/2, (blobs[i].bb_pos_y+blobs[i].bb_size_y)/2 );
// white: id
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
char id_buf[64];
for (int i = 0; i < bc; i++) {
snprintf(id_buf,64,"%d",blobs[i].blob_id);
output(blobs[i].ctr_x/2, blobs[i].ctr_y/2,id_buf);
}
output(20,20,buffer);
// redraw
glutSwapBuffers();
}