int process_instance( livido_port_t *my_instance, double timecode )
{
int len =0;
uint8_t *O[4]= {NULL,NULL,NULL,NULL};
int palette;
int w;
int h;
//@ get output channel details
int error = lvd_extract_channel_values( my_instance, "out_channels", 0, &w,&h, O,&palette );
if( error != LIVIDO_NO_ERROR )
return LIVIDO_ERROR_NO_OUTPUT_CHANNELS; //@ error codes in livido flanky
int uv_len = lvd_uv_plane_len( palette,w,h );
len = w * h;
starfield_t *starfield = NULL;
if ( livido_property_get( my_instance, "PLUGIN_private", 0, &starfield ) != LIVIDO_NO_ERROR )
return LIVIDO_ERROR_INTERNAL;
//@ get parameter values
int number_of_stars = lvd_extract_param_index( my_instance,"in_parameters", 0 );
int speed = 2 + lvd_extract_param_index( my_instance, "in_parameters", 1 );
livido_memset( O[0], 0, len );
livido_memset( O[1], 128, uv_len );
livido_memset( O[2], 128, uv_len );
int center_x = w >> 1;
int center_y = h >> 1;
int i;
int temp_x, temp_y;
STAR **stars = starfield->stars;
for( i = 0; i < number_of_stars; i ++ ) {
stars[i]->zpos -= stars[i]->speed;
if( stars[i]->zpos <= 0 ) {
init_star( stars[i], i + 1, speed );
}
temp_x = (stars[i]->xpos / stars[i]->zpos ) + center_x;
temp_y = (stars[i]->ypos / stars[i]->zpos ) + center_y;
if( temp_x < 0 || temp_x > (w-1) || temp_y < 0 || temp_y > (h-1) ) {
init_star( stars[i], i + 1, speed );
continue;
}
O[0][ temp_y * w + temp_x ] = stars[i]->color;
}
return LIVIDO_NO_ERROR;
}
livido_process_f process_instance( livido_port_t *my_instance, double timecode )
{
int len =0;
int i = 0;
uint8_t *A[4] = {NULL,NULL,NULL,NULL};
uint8_t *O[4]= {NULL,NULL,NULL,NULL};
int palette;
int w;
int h;
int error = lvd_extract_channel_values( my_instance, "out_channels", 0, &w,&h, O,&palette );
if( error != LIVIDO_NO_ERROR )
return LIVIDO_ERROR_HARDWARE;
lvd_extract_channel_values( my_instance, "in_channels" , 0, &w, &h, A, &palette );
int uv_len = lvd_uv_plane_len( palette,w,h );
len = w * h;
int red = lvd_extract_param_index( my_instance,"in_parameters", 0 );
int green = lvd_extract_param_index( my_instance,"in_parameters", 1 );
int blue = lvd_extract_param_index( my_instance,"in_parameters", 2 );
int shift = 1;
if( palette == LIVIDO_PALETTE_YUV444P )
shift = 0;
if( O[0] != A[0] ) {
livido_memcpy( A[0], O[0], len );
}
int y,u,v;
GIMP_rgb2yuv( red, green, blue, y, u, v );
livido_memset( O[1], u, uv_len );
livido_memset( O[2], v, uv_len );
return LIVIDO_NO_ERROR;
}
