control_cm_hist_params
block_sequence[*num_steps].params.control_cm_hist_params.dpp
block_sequence[*num_steps].params.control_cm_hist_params.cm_hist_control
block_sequence[*num_steps].params.control_cm_hist_params.color_space
struct dpp *dpp = params->control_cm_hist_params.dpp;
params->control_cm_hist_params.cm_hist_control,
params->control_cm_hist_params.color_space);
seq_state->steps[*seq_state->num_steps].params.control_cm_hist_params.dpp = dpp;
seq_state->steps[*seq_state->num_steps].params.control_cm_hist_params.cm_hist_control = cm_hist_control;
seq_state->steps[*seq_state->num_steps].params.control_cm_hist_params.color_space = color_space;
struct control_cm_hist_params control_cm_hist_params;