176 void frag_dec_init(struct frag_decoder *decoder, size_t nb_frag, size_t frag_size)  in frag_dec_init()  argument
178 	decoder->nb_frag = nb_frag;  in frag_dec_init()
179 	decoder->frag_size = frag_size;  in frag_dec_init()
181 	decoder->lost_frame_count = decoder->nb_frag;  in frag_dec_init()
182 	sys_bitarray_set_region(&lost_frames, decoder->nb_frag, 0);  in frag_dec_init()
187 	decoder->filled_lost_frame_count = 0;  in frag_dec_init()
188 	decoder->status = FRAG_DEC_STA_UNCODED;  in frag_dec_init()
191 void frag_dec_frame_received(struct frag_decoder *decoder, uint16_t index)  in frag_dec_frame_received()  argument
199 		decoder->lost_frame_count--;  in frag_dec_frame_received()
227 int frag_dec(struct frag_decoder *decoder, uint16_t frag_counter, const uint8_t *buf, size_t len)  in frag_dec()  argument
236 	if (decoder->status == FRAG_DEC_STA_DONE) {  in frag_dec()
237 		return decoder->lost_frame_count;  in frag_dec()
240 	if (len != decoder->frag_size) {  in frag_dec()
246 	if (frag_counter <= decoder->nb_frag && decoder->status == FRAG_DEC_STA_UNCODED) {  in frag_dec()
248 		frag_dec_frame_received(decoder, frag_counter - 1);  in frag_dec()
250 		frag_flash_write((frag_counter - 1) * decoder->frag_size, (uint8_t *)buf,  in frag_dec()
251 				 decoder->frag_size);  in frag_dec()
253 		if (decoder->lost_frame_count == 0) {  in frag_dec()
254 			decoder->status = FRAG_DEC_STA_DONE;  in frag_dec()
255 			return decoder->lost_frame_count;  in frag_dec()
260 	decoder->status = FRAG_DEC_STA_CODED;  in frag_dec()
263 	bit_clear_all(&matched_lost_frm_bm0, decoder->lost_frame_count);  in frag_dec()
264 	bit_clear_all(&matched_lost_frm_bm1, decoder->lost_frame_count);  in frag_dec()
267 	memcpy(xor_row_data_buf, buf, decoder->frag_size);  in frag_dec()
269 	if (decoder->lost_frame_count > FRAG_TOLERANCE) {  in frag_dec()
275 	frag_dec_parity_matrix_vector(decoder->nb_frag, frag_counter - decoder->nb_frag,  in frag_dec()
277 	for (i = 0; i < decoder->nb_frag; i++) {  in frag_dec()
292 			frag_flash_read(i * decoder->frag_size, row_data_buf, decoder->frag_size);  in frag_dec()
295 				  decoder->frag_size);  in frag_dec()
306 		ret = sys_bitarray_find_nth_set(&matched_lost_frm_bm0, 1, decoder->lost_frame_count,  in frag_dec()
318 						decoder->nb_frag, 0, &frame_index);  in frag_dec()
328 						 lost_frame_index, decoder->lost_frame_count)) {  in frag_dec()
330 					      &matched_lost_frm_bm0, decoder->lost_frame_count);  in frag_dec()
331 			frag_flash_write(frame_index * decoder->frag_size, xor_row_data_buf,  in frag_dec()
332 					 decoder->frag_size);  in frag_dec()
333 			decoder->filled_lost_frame_count++;  in frag_dec()
338 				     decoder->lost_frame_count);  in frag_dec()
339 		bit_xor(&matched_lost_frm_bm0, &matched_lost_frm_bm1, decoder->lost_frame_count);  in frag_dec()
340 		frag_flash_read(frame_index * decoder->frag_size, row_data_buf, decoder->frag_size);  in frag_dec()
341 		mem_xor_n(xor_row_data_buf, xor_row_data_buf, row_data_buf, decoder->frag_size);  in frag_dec()
342 	} while (!sys_bitarray_is_region_cleared(&matched_lost_frm_bm0, decoder->lost_frame_count,  in frag_dec()
345 	if (decoder->filled_lost_frame_count != decoder->lost_frame_count) {  in frag_dec()
349 	if (decoder->lost_frame_count < 2) {  in frag_dec()
350 		decoder->status = FRAG_DEC_STA_DONE;  in frag_dec()
351 		return decoder->lost_frame_count;  in frag_dec()
355 	for (i = (decoder->lost_frame_count - 2); i >= 0; i--) {  in frag_dec()
356 		ret = sys_bitarray_find_nth_set(&lost_frames, i + 1, decoder->nb_frag, 0,  in frag_dec()
361 		frag_flash_read(frame_index * decoder->frag_size, xor_row_data_buf,  in frag_dec()
362 				decoder->frag_size);  in frag_dec()
364 				     decoder->lost_frame_count);  in frag_dec()
365 		for (j = (decoder->lost_frame_count - 1); j > i; j--) {  in frag_dec()
369 			ret = sys_bitarray_find_nth_set(&lost_frames, j + 1, decoder->nb_frag, 0,  in frag_dec()
375 					     decoder->lost_frame_count);  in frag_dec()
377 				decoder->lost_frame_count);  in frag_dec()
378 			frag_flash_read(lost_frame_index * decoder->frag_size, row_data_buf,  in frag_dec()
379 					decoder->frag_size);  in frag_dec()
381 				  decoder->frag_size);  in frag_dec()
383 					      decoder->lost_frame_count);  in frag_dec()
385 		frag_flash_write(frame_index * decoder->frag_size, xor_row_data_buf,  in frag_dec()
386 				 decoder->frag_size);  in frag_dec()
388 	decoder->status = FRAG_DEC_STA_DONE;  in frag_dec()
389 	return decoder->lost_frame_count;  in frag_dec()