14  * This file contains Huffman entropy encoding routines.
68 /* Expanded entropy encoder object for Huffman encoding.
166   huff_entropy_ptr entropy = (huff_entropy_ptr)cinfo->entropy;  in start_pass_huff()  local
172     entropy->pub.encode_mcu = encode_mcu_gather;  in start_pass_huff()
173     entropy->pub.finish_pass = finish_pass_gather;  in start_pass_huff()
178     entropy->pub.encode_mcu = encode_mcu_huff;  in start_pass_huff()
179     entropy->pub.finish_pass = finish_pass_huff;  in start_pass_huff()
182   entropy->simd = jsimd_can_huff_encode_one_block();  in start_pass_huff()
198       if (entropy->dc_count_ptrs[dctbl] == NULL)  in start_pass_huff()
199         entropy->dc_count_ptrs[dctbl] = (long *)  in start_pass_huff()
202       memset(entropy->dc_count_ptrs[dctbl], 0, 257 * sizeof(long));  in start_pass_huff()
203       if (entropy->ac_count_ptrs[actbl] == NULL)  in start_pass_huff()
204         entropy->ac_count_ptrs[actbl] = (long *)  in start_pass_huff()
207       memset(entropy->ac_count_ptrs[actbl], 0, 257 * sizeof(long));  in start_pass_huff()
213                               &entropy->dc_derived_tbls[dctbl]);  in start_pass_huff()
215                               &entropy->ac_derived_tbls[actbl]);  in start_pass_huff()
218     entropy->saved.last_dc_val[ci] = 0;  in start_pass_huff()
222   if (entropy->simd) {  in start_pass_huff()
223     entropy->saved.put_buffer.simd = 0;  in start_pass_huff()
225     entropy->saved.free_bits = 0;  in start_pass_huff()
227     entropy->saved.free_bits = SIMD_BIT_BUF_SIZE;  in start_pass_huff()
230     entropy->saved.put_buffer.c = 0;  in start_pass_huff()
231     entropy->saved.free_bits = BIT_BUF_SIZE;  in start_pass_huff()
235   entropy->restarts_to_go = cinfo->restart_interval;  in start_pass_huff()
236   entropy->next_restart_num = 0;  in start_pass_huff()
687   huff_entropy_ptr entropy = (huff_entropy_ptr)cinfo->entropy;  in encode_mcu_huff()  local
695   state.cur = entropy->saved;  in encode_mcu_huff()
697   state.simd = entropy->simd;  in encode_mcu_huff()
701     if (entropy->restarts_to_go == 0)  in encode_mcu_huff()
702       if (!emit_restart(&state, entropy->next_restart_num))  in encode_mcu_huff()
707   if (entropy->simd) {  in encode_mcu_huff()
713                                  entropy->dc_derived_tbls[compptr->dc_tbl_no],  in encode_mcu_huff()
714                                  entropy->ac_derived_tbls[compptr->ac_tbl_no]))  in encode_mcu_huff()
725                             entropy->dc_derived_tbls[compptr->dc_tbl_no],  in encode_mcu_huff()
726                             entropy->ac_derived_tbls[compptr->ac_tbl_no]))  in encode_mcu_huff()
736   entropy->saved = state.cur;  in encode_mcu_huff()
740     if (entropy->restarts_to_go == 0) {  in encode_mcu_huff()
741       entropy->restarts_to_go = cinfo->restart_interval;  in encode_mcu_huff()
742       entropy->next_restart_num++;  in encode_mcu_huff()
743       entropy->next_restart_num &= 7;  in encode_mcu_huff()
745     entropy->restarts_to_go--;  in encode_mcu_huff()
759   huff_entropy_ptr entropy = (huff_entropy_ptr)cinfo->entropy;  in finish_pass_huff()  local
765   state.cur = entropy->saved;  in finish_pass_huff()
767   state.simd = entropy->simd;  in finish_pass_huff()
776   entropy->saved = state.cur;  in finish_pass_huff()
872   huff_entropy_ptr entropy = (huff_entropy_ptr)cinfo->entropy;  in encode_mcu_gather()  local
878     if (entropy->restarts_to_go == 0) {  in encode_mcu_gather()
881         entropy->saved.last_dc_val[ci] = 0;  in encode_mcu_gather()
883       entropy->restarts_to_go = cinfo->restart_interval;  in encode_mcu_gather()
885     entropy->restarts_to_go--;  in encode_mcu_gather()
891     htest_one_block(cinfo, MCU_data[blkn][0], entropy->saved.last_dc_val[ci],  in encode_mcu_gather()
892                     entropy->dc_count_ptrs[compptr->dc_tbl_no],  in encode_mcu_gather()
893                     entropy->ac_count_ptrs[compptr->ac_tbl_no]);  in encode_mcu_gather()
894     entropy->saved.last_dc_val[ci] = MCU_data[blkn][0][0];  in encode_mcu_gather()
1075   huff_entropy_ptr entropy = (huff_entropy_ptr)cinfo->entropy;  in finish_pass_gather()  local
1096       jpeg_gen_optimal_table(cinfo, *htblptr, entropy->dc_count_ptrs[dctbl]);  in finish_pass_gather()
1103       jpeg_gen_optimal_table(cinfo, *htblptr, entropy->ac_count_ptrs[actbl]);  in finish_pass_gather()
1114  * Module initialization routine for Huffman entropy encoding.
1120   huff_entropy_ptr entropy;  in jinit_huff_encoder()  local
1123   entropy = (huff_entropy_ptr)  in jinit_huff_encoder()
1126   cinfo->entropy = (struct jpeg_entropy_encoder *)entropy;  in jinit_huff_encoder()
1127   entropy->pub.start_pass = start_pass_huff;  in jinit_huff_encoder()
1131     entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL;  in jinit_huff_encoder()
1133     entropy->dc_count_ptrs[i] = entropy->ac_count_ptrs[i] = NULL;  in jinit_huff_encoder()