770                          uint8_t *prev2, int stride, int tbl, int size)  in process_block()  argument
792                 if (process_block(ctx, dst, prev1, prev2, stride, tbl, size))  in process_block()
794                 if (process_block(ctx, dst + size, prev1 + size, prev2 + size,  in process_block()
799                 prev2 += size * stride;  in process_block()
800                 if (process_block(ctx, dst, prev1, prev2, stride, tbl, size))  in process_block()
802                 if (process_block(ctx, dst + size, prev1 + size, prev2 + size,  in process_block()
842         int index = prev2 - (const uint8_t *)ctx->frm2;  in process_block()
853             memcpy(dst + k * stride, prev2 + mx + (my + k) * stride, size);  in process_block()
867     uint8_t *prev2 = (uint8_t *)ctx->frm2;  in old_codec47()  local
888         memset(prev2, 0, ctx->height * stride);  in old_codec47()
917                     if (process_block(ctx, dst + i, prev1 + i, prev2 + i, stride,  in old_codec47()
922                 prev2 += stride * 8;  in old_codec47()